Punch is an extremely versatile processing machine tool. In production and manufacturing, the stamping process has the advantages of saving materials and energy and being more efficient than traditional machining. Moreover, machining can be done through the application of molds. For products that cannot be achieved, punching machines are mainly used for plates in actual production. In the current production process, safety issues such as flying debris often occur when stamping sheets, so protective covers are added during stamping. However, in order to improve efficiency during production, workers usually stamp continuously without using protective covers, which causes safety hazards. In addition, workers often mistakenly touch the foot switch during frequent movements in order to speed up the process, causing the slider to fall and cause a safety accident.
Technical implementation elements:
Aiming at the deficiencies in the prior art, the present invention provides a punch switch locking device and a method of using the same.
In order to solve the above technical problems, the present invention is solved through the following technical solution: a punch switch locking device, including a machine tool base and a lower mold located above the machine tool base. There is a pressure rod, and the pressure rod is a right-angle rod. After the vertical section of the pressure rod is passed through the machine tool base, its upper end surface is higher than the lower die plane. The pressure rod is provided with a first fulcrum, and the first fulcrum rotates Located on the machine tool base, the right end of the pressure rod is connected to the locking device through a first pull rope. A first pulley is provided between the pressure rod and the locking device. The first pull rope is wound around the first pulley. On the lower semicircle;
In the above scheme, preferably, the locking device includes a pedal, a pedal cover, a first spring, a second spring, a gear and a lock pin, and the pedal is rotated on the pedal cover The second fulcrum at the bottom (top) is connected with a first spring between the bottom surface of the pedal and the bottom plate of the pedal cover. A gear is provided for side rotation of the pedal cover, and an arc-shaped rack is provided on the pedal to match the gear. There is a lock pin on the left side of the gear. The lock pin passes through the hole on the left side of the pedal cover and is connected to the first drawstring. The second spring is set on the lock pin and abuts against the boss on the right side of the lock pin and the pedal respectively. The left side panel of the cover is provided with a door closing device on the right side of the pedal cover. The beneficial effect is that it provides a switch pedal locking device, which can link the plate to be stamped and the foot switch, and sense the plate through the plate. Unlock the foot pedal.
In the above solution, preferably, the door closing device includes a door panel, a second pull cord, a protective cover and a second pulley, and the lower end of the door panel is rotatably located at the right end of the bottom plate of the pedal cover. , one end of the second pull cord is connected to the upper end of the door panel, and the other end of the second pull cord is wound around the lower arc of the second pulley and then connected to the protective cover. The protective cover is slidably located above the machine tool base, and its beneficial effect is that : Provides a door-closing device that prevents accidental touching of the pedal switch. Through the linkage between the protective cover and the door panel, the punch press can close the door panel of the pedal switch after completing one operation to prevent workers from accidentally touching it.
The above. In the solution, preferably, the pressure rod is a plastic rod, the upper end surface of the vertical section of the pressure rod is a spherical surface, and the upper part of the machine tool base is provided with a cavity that facilitates the rotation and swing of the pressure rod. The beneficial effect is that: A lightweight pressure rod allows the pressure rod to react more quickly and effectively after being pressed by the plate, and the pressure rod can rotate around the first fulcrum in the machine tool base cavity.
Among the above solutions, the preferred one is the pressure rod. , the end of the lock pin is a tapered head, and the size of the tapered head matches the gear tooth root. The material of the lock pin is wear-resistant hard metal, and its beneficial effect is to provide a wear-resistant lock pin. Its service life is improved, and the tapered head lock pin can effectively cooperate with the gear tooth root part, and the locking effect is better.
In the above scheme, it is preferred that the surface of the pedal is provided with tooth-shaped protrusions. The beneficial effect is to provide an anti-slip pedal, so that the user will not accidentally step on it due to slippage between the sole of the foot and the pedal.
In the above scheme, it is preferred that the outside of the door panel is used. A counterweight block is provided. The counterweight block is semicircular and made of metal. It is arranged at an upper position in the center of the door panel. Its beneficial effect is to provide a door panel that can rotate around the second fulcrum in a free state. The configuration block is biased to one side, and the door panel can be opened automatically without the second pull rope through this counterweight block, making it convenient for manual pedaling.
The method of using a punch switch locking device as claimed in claim 1 has the following steps: ①. In the initial position, the protective cover is in an open state and the outer door panel of the pedal cover is in a closed state. When the plate needs to be stamped, place the plate on the lower die surface. At this time, the edge of the plate is pressed on the pressure rod. After the pressure rod is pressed, it rotates counterclockwise around the first fulcrum; ②. At this time, the other end of the pressure rod pulls the first pull. rope, the first pull rope is pulled upward, and because the first tension is wound around the first pulley, the first tension pulls the lock pin to move to the left, and the second spring compresses, causing the lock pin head to disengage from the gear; ③ . After the plate is placed, slide the protective cover downwards so that the protective cover is in a closed state. At this time, there is no longer any force between the second pull rope and the door panel. The door panel rotates clockwise around the fulcrum under the influence of the gravity of one side of the counterweight block, causing the door panel to rotate clockwise around the fulcrum. The door panel opens; ④. After the door panel is opened, manually step on the pedal. The arc-shaped rack and gear on the pedal slide together. After stepping on the pedal, the pedal is rebounded by the first spring force, and the punch completes the stamping work; ⑤ Open the protective cover and The protective cover slides upward, and the protective cover pulls the second pull cord to rotate the door panel counterclockwise around the fulcrum, close the door panel, and take out the stamped panel. The pressure rod is no longer under pressure from the panel, and the second spring stretches to cause the lock pin to engage with the gear. Re-engage the lock, and at the same time, the lock pin slides to the right to pull the first pull rope, and the pressure rod is reset by the tension of the first pull rope.
The beneficial effects of the present invention are: the present invention provides a device to prevent workers from accidentally stepping on the foot switch. The device allows workers to complete the preparatory work before pedaling, and the pedal cover is The door panel is linked with the protective cover, allowing workers to confirm that the protective cover is closed before stepping on it, which improves the safety during stamping and greatly reduces the incidence of safety accidents.
Brief Description of the Drawings
Figure 1 is a schematic structural diagram of the front view of the present invention.
Detailed Embodiments
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments: Referring to Figure 1, a punch switch locking device includes a machine tool base 1, a device The lower mold 2 is above the machine tool base 1. The lower mold 2 is a replaceable mold. The lower mold 2 and the machine tool base 1 are connected by bolts.
Preferably, a pressure rod 3 is provided on the side of the lower mold 2. The pressure rod 3 is a right-angle rod. The pressure rod 3 is preferably made of plastic. The vertical section of the pressure rod 3 is The end surface is a spherical surface and the vertical section of the pressure rod 3 is inserted through the machine tool base 1 and its upper end surface is higher than the plane of the lower mold 2, so that when the plate is placed on the lower mold 2, the pressure rod 3 can be pressed by the plate, and the machine tool The upper part of the seat 1 is preferably provided with a cavity that facilitates the rotation and swing of the pressure rod 3; the pressure rod 3 is provided with a first fulcrum 4, and the first fulcrum 4 is preferably located in the middle of the transverse section of the pressure rod 3. The fulcrum 4 is rotated on the machine tool base 1, and the first fulcrum 4 is preferably connected to the machine tool base 1 by a pin; the right end of the pressure rod 3 is connected to the locking device through the first pull rope 5, and the right end of the pressure rod 3 is preferably connected to the locking device through a first pull rope 5. A small hole is provided to facilitate the penetration of the first pull rope 5. The first pull rope 5 is preferably a thin steel wire rope. A first pulley 6 is provided between the pressure rod 3 and the locking device. The first pulley 6 rolls Located on the machine tool base 1 , the first pull rope 5 is wound around the lower semicircle of the first pulley 6 .
Preferably, the locking device includes a pedal 7, a pedal cover 8, a first spring 9, a second spring 10, a gear 11 and a lock pin 12. The surface of the pedal 7 is preferably provided with a tooth shape. Protrusion to prevent sliding during use, the pedal 7 is rotated on the second fulcrum 13 at the bottom of the pedal cover 8, the pedal 7 and the second fulcrum 13 at the bottom of the pedal cover 8 are preferably connected by a pin, and the pin is inserted through Add grease; a first spring 9 is connected between the bottom surface of the pedal 7 and the bottom plate of the pedal cover 8, the pedal cover 8 is provided with a gear 11 for side rotation, and the pedal 7 is provided with an arc shape that matches the gear 11 Rack 19, the arc-shaped rack 19 and the pedal 7 are welded together as a whole. A lock pin 12 is provided on the left side of the gear 11. Preferably, the end of the lock pin 12 is a cone head, and the cone head size is Matched with the tooth root of the gear 11, the lock pin 12 is made of wear-resistant hard metal; the lock pin 12 passes through the left hole of the pedal cover 8 and is connected to the first pull rope 5. The drawstrings 5 ??are preferably riveted together. The second spring 10 is sleeved on the lock pin 12 and respectively abuts against the right boss of the lock pin 12 and the left side plate of the pedal cover 8. The right boss of the lock pin 12 and The lock pins 12 are integrally formed, and a door closing device is provided on the right side of the pedal cover 8 .
Preferably, the door closing device includes a door panel 14, a second pull cord 15, a protective cover 16 and a second pulley 17. A counterweight 18 is provided on the outside of the door panel 14, and the counterweight 18 is provided on the outside of the door panel 14. 18 is a semicircle, made of metal, and is arranged at the upper center of the door panel 14. The counterweight block 18 and the door panel 14 are preferably welded and formed. The lower end of the door panel 14 is rotatably located at the right end of the bottom plate of the pedal cover 8. The door panel One end of the second pull rope 15 is connected to the upper end of 14. The other end of the second pull rope 15 is wound around the lower arc of the second pulley 17 and connected to the protective cover 16. The second pulley 17 and the machine tool base 1 are preferably pinned. The protective cover 16 is slidably connected to the machine tool base 1 via a sliding rail.
The working principle or usage method is as follows:
In the initial position, the protective cover 16 is in an open state, and the outer door panel 14 of the pedal cover 8 is in a closed state. When stamping plates are required, Place the plate on the surface of the lower mold 2. At this time, the edge of the plate is pressed on the pressure rod 3. After receiving pressure, the pressure rod 3 rotates counterclockwise around the first fulcrum 4. At this time, the other end of the pressure rod 3 pulls the first pull rope 5. The first pull rope 5 is pulled upward. Since the first pull rope 5 is wound around the first pulley 6, the first pull rope 5 pulls the lock pin 12 to move to the left. The second spring 10 is compressed, causing the lock pin 12 to move forward. Disengage from the gear 11; after the placement of the plate is completed, slide the protective cover 16 downward so that the protective cover 16 is in a closed state. At this time, there is no longer any force between the second pull rope 15 and the door panel 14, and the door panel 14 is supported by the counterweight block 18. The side force affects the clockwise rotation around the fulcrum, causing the door panel 14 to open; after the door panel 14 is opened, the pedal 7 is manually stepped on, and the arc-shaped rack 19 on the pedal 7 slides in cooperation with the gear 11. After the pedal 7 is stepped on, the pedal 7 is affected by the first spring force 9 Make the pedal 7 rebound, and the punch completes the stamping work; open the protective cover 16, slide the protective cover 16 upward, and the protective cover 16 pulls the second pull rope 15 to make the door panel 14 rotate counterclockwise around the fulcrum, close the door panel 14, and take out the stamped punch. plate, the pressure rod 3 is no longer under the pressure of the plate, the second spring 10 stretches so that the lock pin 12 and the gear 11 are re-locked, and at the same time the lock pin 12 slides to the right and pulls the first pull rope 5, and the pressure rod 3 is in the The pressure rod 3 is reset under the action of the pulling force of the pull rope 5.
This device can cultivate good safety awareness among workers, and they will consciously and actively close the protective cover every time they press, avoiding unnecessary safety hazards and greatly improving the safety of the punch press.
The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it still The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention. .
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