CN112658695B - Automatic punching device for workpiece - Google Patents

Abstract

In order to overcome the technical problem that the punching device in the prior art cannot polish the burrs, burrs, etc. at the penetration of the hole, which is inconvenient for the later use of the workpiece, the present invention provides an automatic punching device for the workpiece, which includes a frame, and the frame includes The bottom plate and the top plate are arranged at intervals. The top plate is provided with a punching head, and the bottom plate is provided with a clamping mechanism for limiting the workpiece. The punching head includes a punching punch and a hydraulic cylinder. There is a connecting rod, and several auxiliary mechanisms are arranged on the circumference of the connecting rod. The auxiliary mechanism includes a reset piece, an adjusting piece and a friction piece. One end of the reset piece is connected to the friction plate, and the other end of the reset piece is connected to the adjustment piece. When the reset piece is compressed, the outer side of the friction plate is flush with the peripheral surface of the punching punch. When the reset piece is extended, the friction plate is partially The peripheral surface of the punching punch protrudes.

Description

An automatic punching device for workpieces

technical field

The invention relates to the technical field of workpiece punching, in particular to an automatic workpiece punching device.

Background technique

Punching refers to punching various patterns on steel, leather, cloth, wood and other materials to meet different needs. When punching a workpiece, a punching device needs to be used. The existing automatic punching device for workpieces cannot be used for punching through. The burrs and burrs at the place are processed, and workers need to be reworked later.

The punching device with photographing detection and positioning with the announcement number of CN104923614A includes a punching driving device, an upper template and a punching head, and also includes a clamping device and a support seat located below the punching head. The clamping device It includes symmetrically arranged clamping blocks, and the workpiece is clamped between the clamping blocks; a photographing and positioning device is arranged between the upper template and the workpiece, and an indicator light and a display screen are installed on the front side of the upper template. The indicator light, the display screen and the photographing and positioning device are respectively connected with the control unit.

The above-mentioned patent adjusts the processing position of the workpiece through the photographing positioning device and the clamping block, which has a simple structure and low cost; adopts the image comparison processing to display the adjustment information in real time, and its operation is simple; the setting of the support block can prevent the whole of the workpiece to be processed. Deformation, and the set punching groove is convenient for punching and blanking. The problem is that the above-mentioned punching device simply punches the workpiece during the punching process. After the punching is completed, some burrs and burrs will appear at the penetration of the punched holes, but the belt is photographed. The device for detecting and positioning the punching device cannot automatically handle these burrs and burrs, so the punched holes are very inconvenient for the later use of workpieces.

SUMMARY OF THE INVENTION

In order to overcome the technical problem that the punching device in the prior art cannot polish the burrs, burrs, etc. at the penetration of the hole, which is inconvenient for the later use of the workpiece, the present invention provides an automatic punching device for the workpiece, which is capable of completing the punching process. It can automatically grind the burrs, burrs, etc. at the penetration of the hole. Compared with the step-by-step processing method of punching and then grinding in the traditional operation, the present application integrates the punching operation and the grinding operation, which greatly shortens the punching process. The machining cycle of the hole operation, thereby effectively improving the machining efficiency.

In order to achieve the above objects, the present invention adopts the following technical solutions.

An automatic punching device for workpieces includes a frame, the frame includes a bottom plate and a top plate arranged at intervals, a punching head is arranged on the top plate, a clamping mechanism for limiting the workpiece is arranged on the bottom plate, and the punching head includes a punching punch Head and hydraulic cylinder. The hydraulic cylinder can drive the punching punch to move close to or away from the bottom plate. A connecting rod is arranged between the punching punch and the hydraulic cylinder. Several auxiliary mechanisms are arranged on the circumference of the connecting rod. The adjusting piece includes a solid block whose one end is connected with the connecting rod, the friction piece includes a friction plate whose one end is rotatably connected with the other end of the solid block, one end of the reset piece is connected with the friction plate, and the other end of the reset piece is connected with the adjusting piece When the reset piece is compressed, the outer side surface of the friction plate is flush with the peripheral surface of the punching punch, and when the reset piece is extended, the friction plate part protrudes from the peripheral surface of the punching punch.

The present application provides an automatic punching device for workpieces. A hydraulic cylinder on a top plate drives a punching punch to punch a workpiece on a bottom plate, and a clamping mechanism on the bottom plate limits the workpiece to prevent the workpiece from being punched during the punching process. Positional deviation occurs during the punching process, and the punching process includes the downward process and reset process of the punching punch. During the descending process, the friction plate in the auxiliary mechanism is kept parallel to the connecting rod. When the punching punch penetrates the workpiece, the workpiece contacts the adjustment piece in the auxiliary mechanism, and the adjustment piece triggers the action of the reset piece to realize the positional deviation of the friction plate. At this time, the friction plate is inclined to the connecting rod. During the reset process of the punching punch, the auxiliary mechanism moves up synchronously with the punching punch. During this process, the inclined friction plate grinds the lower edge of the punched hole on the workpiece. In this process, the workpiece is separated from the adjustment part, and the reset part returns to the initial state under the limit of the hole on the workpiece and the deployment of the adjustment part, and the friction plate Reset to the state parallel to the connecting rod to prepare for the burr grinding in the next punching process. The present application uses an auxiliary mechanism to integrate the burr grinding process at the edge of the hole into the punching cycle of the punching punch, and the burr grinding process can be completed while the punching punch is reset, and no additional grinding cycle is required outside the punching cycle. , the efficiency of punching processing on the workpiece is greatly improved, and the construction period is effectively shortened; in addition, the auxiliary mechanism and the punching punch in this application use the same driving component, and no additional driving components need to be added to achieve energy saving during processing; finally, The opening and resetting of the friction plate on the auxiliary mechanism are automatically realized by the punching process. This realization process does not need to be adjusted by the processing control system. The mutual interference between the action of the auxiliary mechanism and the punching punch caused by the disturbance of the control system.

Preferably, the adjusting member includes a fixed block and a moving block which are connected with the connecting rod, the moving block is located between the fixed block and the stable block, a telescopic rod is arranged between the fixed block and the moving block, and the peripheral surface of the telescopic rod is sleeved with a fixed block. Spring, the two ends of the stabilizing spring are respectively in contact with the fixed block and the moving block. The side of the moving block away from the fixed block is provided with a movable rod. The movable rod is slidably connected with a touch plate, and the touch plate is located between the movable block and the friction plate. At the same time, one end of the horizontally arranged touch plate away from the movable rod can be in contact with the friction plate.

Preferably, a U-shaped block is arranged on the inner side of the friction plate, and the U-shaped block is close to the end of the friction plate away from the punching punch. The U-shaped block is fixedly connected with a connecting shaft, and the connecting shaft is rotatably connected with the stable block. Inside the U-shaped groove on the U-shaped block.

Preferably, the reset piece includes a limit piece and a reset spring, a reset plate is provided at one end of the stabilizing block close to the punching punch, the reset plate is located inside the friction plate, and both ends of the horizontally arranged reset spring are connected to the friction plate and the reset plate respectively , the end of the movable rod away from the moving block is provided with a clamping block, the limiter includes an elastic hook and a rigid hook, the elastic hook is connected with the friction plate, the rigid hook is connected with the clamping block, and the elastic hook and the rigid hook are clamped when the return spring is in a compressed state , the elastic hook and the rigid hook are separated when the return spring is extended.

The present invention adopts connecting rods, punching punches, fixed blocks, stable blocks, connecting shafts, U-shaped blocks, friction plates, elastic hooks, reset plates, reset springs, telescopic rods, moving blocks, stable springs, movable rods, clips Blocks, rigid hooks, touch plates, bearings and threaded rods allow the workpiece punching device to simultaneously process the punched holes during the punching process. After the holes are punched, the upper edge of the workpiece touches the The plate, the touch plate will drive the moving block to move upward through the threaded rod and the bearing, the moving block will drive the rigid hook to move upward through the movable rod and the clamping block, and the elastic hook will be disengaged from the rigid hook. , the friction plate will become inclined, so that when the entire auxiliary mechanism moves upward, the friction plate will grind the lower edge of the hole where the hole penetrates. Compared with the conventional straight-up and straight-down grinding method, the inclined grinding method can be more Good removal of burrs and burrs from hole penetrations.

Preferably, one end of the moving block close to the punching punch is connected with one end of the threaded rod, the other end of the threaded rod penetrates the touch plate and extends to the side of the touch plate close to the punching punch, and the touch plate and the threaded rod are threaded Rotationally connected, the threaded rod is provided with a rotating block, and the rotating block is close to the end of the threaded rod away from the punching punch.

Preferably, the cross section of the punching punch is rectangular, the number of auxiliary mechanisms is four and corresponds to the four lateral positions of the punching punch, and the distance between the touch plate and the upper end surface of the punching punch is greater than that on the workpiece. punching depth.

Preferably, the top plate and the bottom plate are fixed by a vertical plate, the clamping mechanism includes an electric push rod fixedly installed on the vertical plate, the electric push rod is located on the side of the vertical plate away from the workpiece, and the output end of the electric push rod penetrates the vertical plate and is connected with a Clamping plate.

Preferably, the elastic hook is made of spring steel.

Preferably, the end of the moving block away from the stable block is provided with a bearing, the surface of the bearing outer ring is fixedly connected to the moving block, and the inner wall of the bearing inner ring is fixedly connected to the surface of the threaded rod.

In the present application, when the punching punch penetrates the workpiece, the workpiece touches the touch plate with respect to the upper surface of the opening of the hole, and the friction plate pops up at this time, so that the punching head moves upward, and the friction plate can grind the workpiece. Processing, the setting of bearings, threaded rods and rotating blocks is to facilitate the adjustment of the up and down position of the touch plate, and to adjust the position of the touch plate, so that the punching head can be suitable for punching workpieces of different thicknesses.

In summary, the present invention has the following beneficial effects: (1) The present application uses an auxiliary mechanism to integrate the burr grinding operation at the edge of the hole into the punching cycle of the punching punch, and the punching punch can be reset while the punching punch is reset. After finishing the burr grinding process, there is no need to add a grinding cycle to the punching cycle, the efficiency of the punching process on the workpiece is greatly improved, and the construction period is effectively shortened; (2) In this application, the auxiliary mechanism and the punching punch use the same driving component, and no additional Additional drive components are provided to realize energy saving during processing; (3) The opening and resetting of the friction plate on the auxiliary mechanism are automatically realized by the punching process. This realization process does not require adjustment by the processing control system, and the auxiliary mechanism The action of the punch and the action of the punching punch realize a good cycle maintenance, which effectively avoids the mutual interference between the action of the auxiliary mechanism and the punching punch caused by the disturbance of the control system.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a front view of the punching head in the present invention.

Figure 3 is a top view of the punching head in the present invention.

Fig. 4 is a front view of the auxiliary mechanism in the present invention.

FIG. 5 is a partial enlarged view at A-A in FIG. 4 .

Figure 6 is an axonometric view of the assist mechanism in the present invention.

FIG. 7 is a schematic diagram of the auxiliary mechanism when the friction plate is ejected in the present invention.

In the picture:

1 rack, 101 bottom plate, 102 vertical plate, 103 top plate, 2 hydraulic cylinder, 3 moving plate, 4 punching head, 401 connecting rod, 402 punching punch, 403 auxiliary mechanism, 4031 fixed block, 4032 stable block, 4033 Connecting shaft, 4034 U-shaped block, 4035 friction plate, 4036 elastic hook, 4037 reset plate, 4038 reset spring, 4039 telescopic rod, 40310 moving block, 40311 stable spring, 40312 movable rod, 40313 block, 40314 rigid hook, 40315 contact Touch plate, 40316 bearing, 40317 threaded rod, 5 clamping mechanism, 501 electric push rod, 502 clamping plate, 6 rotating block.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example:

As shown in Figures 1-7, the present invention provides an automatic punching device for workpieces, including a frame 1, a hydraulic cylinder 2, a moving plate 3 and a punching head 4, the hydraulic cylinder 2 is fixedly installed on the frame 1, and the hydraulic cylinder 2 is fixed on the frame 1. The setting of the cylinder 2 is to drive the moving plate 3 to move up and down. The moving plate 3 is fixedly connected to the output end of the bottom of the hydraulic cylinder 2. The punching head 4 is fixedly installed at the bottom of the moving plate 3. The frame 1 includes a bottom plate 101. The left and right sides of the top of 101 are fixedly connected with vertical plates 102, the tops of the two vertical plates 102 are fixedly connected through the top plate 103, the hydraulic cylinder 2 is fixedly installed on the top of the top plate 103, and the vertical plate 102 is fixed on the side away from the punching head 4 A clamping mechanism 5 is installed. The clamping mechanism 5 includes an electric push rod 501 fixedly installed on the vertical plate 102. The output end of the electric push rod 501 near the punching head 4 penetrates the vertical plate 102 and extends to its external fixed connection There is a clamping plate 502, the bottom of the clamping plate 502 is in contact with the top of the bottom plate 101, and the clamping plate 502 can move left and right. By setting the clamping mechanism 5, the workpiece can be clamped, which is convenient for punching the workpiece. .

The punching head 4 includes a connecting rod 401 fixedly connected to the bottom of the moving plate 3, the bottom end of the connecting rod 401 is fixedly installed with a punching punch 402, and four sides of the connecting rod 401 are fixedly installed with an auxiliary mechanism 403, and the auxiliary mechanism 403 Including a fixed block 4031 and a stable block 4032, the side of the fixed block 4031 close to the connecting rod 401 is fixedly connected to it, the fixed block 4031 is fixedly connected to the connecting rod 401, and the side of the stable block 4032 close to the connecting rod 401 is fixedly connected to it, and it is stable The block 4032 is fixedly connected with the connecting rod 401 , the front side of the stable block 4032 is rotatably connected with a connecting shaft 4033 , the rear end of the connecting shaft 4033 penetrates the stable block 4032 and extends to the outside thereof, and the connecting shaft 4033 can rotate on the stable block 4032 , the left side of the connecting shaft 4033 is provided with a U-shaped block 4034, the front and rear ends of the connecting shaft 4033 are respectively fixedly connected to the front and rear sides of the inner wall of the U-shaped block 4034, and the left side of the U-shaped block 4034 is fixedly connected with a friction plate 4035, from It can be seen from Fig. 3 that the size of the left and right friction plates 4035 is the same, and the size of the front and rear friction plates 4035 is the same. This setting is to make the four friction plates 4035 fit together to form a complete square frame, so that the square frame It is just suitable for the hole punched by the punching punch 402. The friction plate 4035 on the left and the friction plate 4035 on the rear side have the same height and thickness. The difference is only the distance shown in the top view. The right side of the friction plate 4035 There is an elastic hook 4036 fixedly connected to the bottom of the elastic hook. The elastic hook 4036 is made of spring steel. The shape of the elastic hook 4036 can be clearly seen from the drawings in the specification. The front and rear of the elastic hook 4036 are wider, but the thickness of the elastic hook 4036 is slightly thinner. Therefore, the deformation of the elastic hook 4036 can only be bent downward and then reset from the perspective of FIG. 4 . The bottom of the stabilization block 4032 is fixedly connected with a reset plate 4037, and the bottom of the left side of the reset plate 4037 is fixedly connected with a reset spring 4038. The left end of the spring 4038 is fixedly connected to the right side of the friction plate 4035. The state of the return spring 4038 shown in FIG. 4 is a compressed state. When there is no foreign object to restrict the return spring 4038, the return spring 4038 will become longer, and the bottom of the fixed block 4031 is stretched and retracted. The rod 4039 is connected with the moving block 40310. The telescopic rod 4039 is set so that the moving block 40310 can only move up and down. The surface of the telescopic rod 4039 is sleeved with a stable spring 40311, and the fixed block 4031 and the moving block 40310 are fixed by the stable spring 40311. Connecting, the bottom of the moving block 40310 is fixedly connected with a movable rod 40312, the bottom end of the movable rod 40312 penetrates through the stable block 4032 and extends to the bottom and is fixedly connected with a clamping block 40313, and the left side of the clamping block 40313 is fixedly connected with an elastic hook 4036. The rigid hook 40314 used, the rigid hook 40314 has no elasticity, and will not deform and reset the process, the movable rod 403 The surface of 12 and the position between the stable block 4032 and the moving block 40310 is slidably connected with a touch plate 40315. It can be seen from FIG. 6 that the movable rod 40312 is a rectangular bar, then the touch plate 40315 is slidably connected to the movable rod 40312. It means that the touch plate 40315 will only move up and down, and will not rotate on the surface of the movable rod 40312. The left side of the bottom of the moving block 40310 is connected with a threaded rod 40317 through a bearing 40316, and the top of the left side of the threaded rod 40317 A rotating block 6 is fixedly connected. By setting the rotating block 6, it is convenient for the staff to directly manually rotate the threaded rod 40317. The surface of the outer ring of the bearing 40316 is fixedly connected to the moving block 40310, and the inner wall of the inner ring of the bearing 40316 is fixedly connected to the surface of the threaded rod 40317. , the relative rotation of the inner and outer rings of the bearing 40316 is used here. The rotation of the threaded rod 40317 will not affect the moving block 40310. The bottom end of the threaded rod 40317 penetrates the touch plate 40315 and extends below it. The touch plates 40315 are threadedly connected. The short lengths of the movable rod 40312 and the threaded rod 40317 in Figure 6 are drawn based on the principle of breaking, otherwise it is inconvenient to view. The arrow in Figure 7 shows that the touch plate 40315 can move upward.

When in use, the workpiece is placed on the top of the bottom plate 101, the electric push rod 501 drives the clamping plate 502 to move, the two clamping plates 502 will clamp the workpiece, and the hydraulic cylinder 2 drives the punching head 4 downward through the moving plate 3. Movement, the downward movement of the punching head 4 will eventually cause the punching punch 402 to move downward. The punching punch 402 punches the workpiece. When the punching punch 402 punches the workpiece, the punching punch 402 It will continue to move downward until it penetrates the workpiece. When the punching head 4 continues to move downward, the touch plate 40315 also moves downward. When the punching punch 402 penetrates the workpiece, the upper edge of the friction plate 4035 also penetrates the workpiece. , at this time, the top of the workpiece will touch the touch plate 40315, the touch plate 40315 will drive the moving block 40310 to move upward through the threaded rod 40317 and the bearing 40316, and the upward movement of the moving block 40310 will compress the telescopic rod 4039 and the stable spring 40311, the moving block 40310 will drive the blocking block 40313 to move upward through the movable rod 40312, and the blocking block 40313 will drive the rigid hook 40314 to disengage the elastic hook 4036. At this time, the return spring 4038 will reset, that is, stretch, and the return spring 4038 will drive the friction plate 4035 to move, and the whole The punching head 4 will move from the state shown in FIG. 2 to the state shown in FIG. 7 , that is, the friction plate 4035 will become inclined state, then when the punching is completed, the hydraulic cylinder 2 drives the punching head 4 to move upward through the moving plate 3 When the friction plate 4035 grinds the lower edge of the punched hole, the burrs and burrs appearing on the lower edge of the hole are well removed. At the same time, when the workpiece does not withstand the touch plate 40315, the stabilizing spring 40311 will drive the moving block When the 40310 moves downward, the rigid hook 40314 will move downward and return to its original state. When the friction plate 4035 is gradually squeezed by the workpiece, the friction plate 4035 will grind the hole in the workpiece, and the elastic hook 4036 will be re-attached to the rigid hook 40314. Finally, The entire punching head 4 will move to the outside of the workpiece, so that the next punching can be performed, then the workpiece is thin or thick, how to ensure that when the upper edge of the friction plate 4035 moves to the bottom of the workpiece, the top of the workpiece just touches When the touch plate 40315 is touched, the threaded rod 40317 can be rotated by the rotating block 6, and the different rotation directions of the threaded rod 40317 will cause the touch plate 40315 to move downward or upward.

Claims (6)

1. an automatic punching device for a workpiece, comprising a frame, the frame includes a bottom plate and a top plate arranged at intervals, and the top plate is provided with a punching head, it is characterized in that, the bottom plate is provided with a clamping mechanism to limit the workpiece, punching The hole head includes a punching punch and a hydraulic cylinder. The hydraulic cylinder can drive the punching punch to move close to or away from the bottom plate. A connecting rod is arranged between the punching punch and the hydraulic cylinder. The mechanism includes a reset piece, an adjustment piece and a friction piece. The adjustment piece includes a stable block connected to the connecting rod at one end, and the friction piece includes a friction plate rotatably connected to the other end of the stable block. One end of the reset piece is connected to the friction plate. The other end of the friction plate is connected to the adjustment piece, the outer side of the friction plate is flush with the peripheral surface of the punching punch when the reset piece is compressed, and the friction plate part protrudes from the peripheral surface of the punching punch when the reset piece is extended; The fixed block and the moving block are connected by the rod. The moving block is located between the fixed block and the stable block. A telescopic rod is arranged between the fixed block and the moving block. The peripheral surface of the telescopic rod is sleeved with a stable spring. Abutting with the fixed block and the moving block, a movable rod is arranged on the side of the moving block away from the fixed block, and a touch plate is slidably connected to the movable rod, and the touch plate is located between the moving block and the friction plate, and the horizontally arranged touch plate The end away from the movable rod can be in contact with the friction plate; the inner side of the friction plate is provided with a U-shaped block, the U-shaped block is close to the end of the friction plate away from the punching punch, and the U-shaped block is fixedly connected with a connecting shaft, which is connected to the The stabilizing block is connected in rotation, and the stabilizing block is located in the U-shaped groove on the U-shaped block; the reset piece includes a limit piece and a reset spring, the end of the stabilizing block close to the punching punch is provided with a reset plate, and the reset plate is located inside the friction plate. The two ends of the arranged reset spring are respectively connected with the friction plate and the reset plate, the end of the movable rod away from the moving block is provided with a clamping block, the limiter includes an elastic hook and a rigid hook, the elastic hook is connected with the friction plate, and the rigid hook is connected with the clamping block When the return spring is in a compressed state, the elastic hook and the rigid hook are clamped, and when the return spring is extended, the elastic hook and the rigid hook are separated. 2. The automatic workpiece punching device according to claim 1, wherein one end of the moving block close to the punching punch is connected with one end of a threaded rod, and the other end of the threaded rod penetrates the touch plate and extends to the touch The plate is close to the side of the punching punch, and the touch plate is threadedly connected to the threaded rod. The threaded rod is provided with a rotating block, and the rotating block is close to the end of the threaded rod away from the punching punch. 3. The automatic punching device for a workpiece according to claim 1, wherein the cross section of the punching punch is rectangular, and the number of auxiliary mechanisms is four and corresponds to the four lateral positions of the punching punch respectively, The distance between the touch plate and the upper end face of the punching punch is greater than the punching depth on the workpiece. 4. The automatic punching device for a workpiece according to claim 1, wherein the top plate and the bottom plate are fixed by a vertical plate, the clamping mechanism comprises an electric push rod fixedly installed on the vertical plate, and the electric push rod is located away from the vertical plate. On one side of the workpiece, the output end of the electric push rod penetrates the vertical plate and is connected with a clamping plate. 5 . The automatic punching device for workpieces according to claim 1 , wherein the elastic hook is made of spring steel. 6 . 6. A workpiece automatic punching device according to claim 1 or 2, characterized in that, the end of the moving block away from the stable block is provided with a bearing, the surface of the bearing outer ring is fixedly connected with the moving block, and the inner wall of the bearing inner ring is connected to the moving block. Surface-fixed connection of threaded rods.

Images