Automatic feeding punching device and its production process

Abstract

The present invention relates to the technical field of stamping devices, and in particular to an automatic feeding stamping device and a production process thereof, including a stamping machine, a fixed die and a movable die, wherein a feeding mechanism is arranged on one side of the stamping machine; the feeding mechanism comprises two side plates arranged on one side of the stamping machine, and the upper sides of the two side plates are provided with slide grooves, and the inner sides of the two slide grooves are slidably connected with a feeding frame, and a clamping mechanism is arranged on the feeding frame. The present invention clamps and fixes the material belt by the clamping mechanism in the feeding mechanism, and at the same time drives the feeding frame in the feeding mechanism to move back and forth by the adjustable reciprocating mechanism therein, so that the material belt can be intermittently fed between the fixed die and the movable die of the stamping machine, which not only greatly improves the feeding efficiency, but also prevents the material belt from sliding during the material belt feeding process, so that the distance of each intermittent movement of the material belt is equal, thereby improving the accuracy of the material belt feeding position and improving the stamping quality of the product.

Description

Technical Field

[0001] The invention relates to the technical field of punching devices, in particular to an automatic feeding punching device and a production process thereof. Background Art

[0002] Stamping technology is a comprehensive cold processing technology for metal sheets, including shearing, punching, cutting, compounding, folding, welding, riveting, splicing and forming.

[0003] After searching, a Chinese patent with announcement number: CN114653845B discloses a continuous automatic stamping equipment with a feeding device, including a feeding device, a stamping assembly and a linkage drive assembly; the linkage drive assembly is used to drive the feeding device to transport the material to the stamping assembly when the stamping assembly stamps the material.

[0004] Based on the above search and combined with actual problems, it was found that: the stamping device achieves the effect of automatic feeding by rotating the feed roller to pull the material belt toward the stamping machine, and its feeding efficiency is relatively high. However, with the increase of the stamping rhythm, the feed roller rotates and stops quickly, driving the material belt to move and stop. In this process, it is easy to produce a slight slip between the material belt and the feed roller, resulting in unequal lengths of the material belt being sent out each time, which can easily cause the same position of the material belt to be stamped multiple times, resulting in an incomplete shape of the stamped finished product. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic feeding punching device and a production process thereof to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: an automatic feeding stamping device, comprising a stamping machine, a fixed mold and a movable mold, a feeding mechanism is arranged on one side of the stamping machine; the feeding mechanism comprises two side plates arranged on one side of the stamping machine, the upper sides of the two side plates are provided with slide grooves, the inner sides of the two slide grooves are slidably connected with a feeding frame, a clamping mechanism is arranged on the feeding frame, a hollow rotating shaft is penetrated and rotatably connected with the upper sides of the two side plates, and an adjustable reciprocating mechanism is arranged between the feeding frame and the hollow rotating shaft; the clamping mechanism comprises four guide rods slidably inserted on the upper and lower sides of the feeding frame and two central shafts rotatably connected at the two ends of the inner side of the feeding frame, one end of the two guide rods located at the same height are fixed with a clamping plate, two sides of the two central shafts are symmetrically fixed with two linkage rods, one end of the four linkage rods are rotatably connected with the two ends of the two clamping plates through a connecting rod, and a linkage air supply mechanism is arranged between the feeding frame, the hollow rotating shaft and the side plates.

[0007] Preferably, the linked air supply mechanism includes a piston cylinder fixed on the upper side of the feeding frame, a cylindrical shell fixed on one side of one of the side plates, an air tank and an air pump arranged between the two side plates, the inner side of the piston cylinder is slidably connected with a piston plate, the lower end of the piston plate is fixed with a pressure rod, the lower end of the pressure rod is fixed to the upper side of an upper clamping plate, the lower end of the piston plate is elastically connected to the inner bottom end of the piston cylinder through a return spring, the upper end of the piston cylinder is connected to the inner side of the cylindrical shell through a first air pipe, the air outlet end of the air pump is connected to the inner side of the air tank, the air outlet end of the air tank is connected to the inner side of the cylindrical shell through a second air pipe, and a reversing structure is arranged between the cylindrical shell and the hollow rotating shaft.

[0008] Preferably, the reversing structure includes a rotating block fixed at one end of the outer side of the hollow rotating shaft and rotatably connected to the inner side of the cylindrical shell, and an air leakage hole opened on the outer side of the cylindrical shell, an air leakage groove that can connect the air leakage hole and the first air pipe is opened on one side of the rotating block, and an inflation groove that can connect the first air pipe and the second air pipe is opened on the side of the rotating block relative to the air leakage groove.

[0009] Preferably, rubber pads are fixed at the middle positions of the two clamping plates on the opposite sides.

[0010] Preferably, the adjustable reciprocating mechanism includes two rotating rods fixed at both ends of the hollow rotating shaft, an adjusting rod is slidably inserted into the inner side of the two rotating rods, one end of the two adjusting rods is rotatably connected to a connecting rod, one end of the two connecting rods is rotatably connected to the two ends of the feeding frame respectively, a screw is rotatably connected at the middle position of the hollow rotating shaft, and an adjusting plate is rotatably connected to the outer side of the screw through a thread, and the two ends of the adjusting plate are respectively fixed to one end of the two adjusting rods.

[0011] Preferably, a driven gear is fixed to the outer side of the hollow rotating shaft, a motor is installed on one side of one of the side plates, and a driving gear meshing with the driven gear is fixed to the driving end of the motor.

[0012] Preferably, a trigger switch is installed on the upper side of the movable mold, and the trigger switch is electrically connected to the control circuit of the motor.

[0013] Preferably, a guide roller, a threaded rod and a fixed positioning rod are rotatably connected between the two side plates, and two adjustment disks are symmetrically threaded at the outer ends of the threaded rod through two threads in opposite directions. The two adjustment disks are slidably mounted on the outer side of the positioning rod, and the outer sides of the two adjustment disks are rotatably connected with centering rollers, and the two centering rollers are rollingly connected to the guide rollers.

[0014] Preferably, a material belt roller is rotatably connected between the two side plates at a lower position.

[0015] The present invention also provides an automatic feeding stamping production process, which specifically includes the following steps:

[0016] Step 1: By rotating the screw in the adjustable reciprocating mechanism, the screw rotates to drive the adjusting plate to move up and down through the thread, and the adjusting plate drives the two adjusting rods to extend and retract, thereby adjusting the distance between one end of the two connecting rods and the axis center line of the hollow shaft, thereby adjusting the moving stroke of the feeding frame during each reciprocating movement, and then adjusting the length of each feeding of the material belt. According to the different sizes of the stamping products, the different feeding lengths of the material belt are adjusted;

[0017] Step 2: The motor in the feeding mechanism and the adjustable reciprocating mechanism drives the hollow shaft to rotate 360° through the meshing between the driving gear and the driven gear. The two rotating rods at both ends of the hollow shaft rotate one circle each time the hollow shaft rotates one circle. The two rotating rods drive the feeding frame to reciprocate once inside the two chutes through two adjusting rods and two connecting rods.

[0018] Step 3. When the hollow rotating shaft in the feeding mechanism drives the rotating rod to rotate to the horizontal right, the feeding frame is farthest from the punching machine. At the same time, the hollow rotating shaft drives the rotating block of the reversing structure to rotate, so that the inflation groove faces upward, and the inflation groove connects the second air pipe with the first air pipe. At this time, the compressed air inside the gas tank flows to the inner side of the piston cylinder of the linkage air feeding mechanism through the second air pipe, the inflation groove and the first air pipe. The compressed air pushes the piston plate therein to move downward, and the piston plate drives the pressure rod to move downward, and the pressure rod drives a clamping plate located above in the clamping mechanism to move downward. This clamping plate drives the two center shafts to rotate synchronously through the two connecting rods and two linkage rods at both ends. The two center shafts then drive a clamping plate below to move upward synchronously through the other two linkage rods and two connecting rods, so that the two clamping plates are synchronously merged to clamp and fix the upper and lower sides of the material belt. At the same time, as the hollow rotating shaft and the rotating rod continue to rotate, the hollow rotating shaft The shaft drives the two rotating rods to rotate counterclockwise from right to left, driving the feeding frame to move in the direction of the punching machine. Since the clamping mechanism on the feeding frame fixes the material belt, the feeding frame will drive the material belt to move in the direction of the punching machine at the same time, and pull the material belt between the fixed mold and the movable mold, so that it can be punched by the punching machine. When the two rotating rods rotate to the horizontal left, the material belt is pulled to the farthest end. At the same time, the air relief groove in the reversing mechanism rotates to the top with the rotating block, and the air relief groove connects the first air pipe and the air relief hole. At this time, the air inside the piston cylinder in the linkage air supply mechanism is squeezed by the reset spring and the piston plate, and is discharged outward through the first air pipe, the air relief groove, and the air relief hole, so that the two clamps are separated and reset, and the clamping and fixation of the material belt are released. Then, as the hollow shaft and the rotating rod continue to rotate counterclockwise, the hollow shaft drives the rotating rod to rotate to the horizontal right angle again, completing a feeding cycle.

[0019] The present invention provides an automatic feeding punching device and a production process thereof by improvement, which has the following improvements and advantages compared with the prior art:

[0020] First, the present invention clamps and fixes the material strip by the clamping mechanism in the feeding mechanism, and at the same time drives the feeding frame in the feeding mechanism to move back and forth by the adjustable reciprocating mechanism therein, so that the material strip can be intermittently fed between the fixed mold and the movable mold of the stamping machine, which not only greatly improves the feeding efficiency, but also prevents the material strip from sliding during the feeding process, so that the distance of each intermittent movement of the material strip is equal, thereby improving the accuracy of the feeding position of the material strip and improving the stamping quality of the product.

[0021] Secondly: the present invention rotates the screw in the adjustable reciprocating mechanism, and the rotation of the screw drives the adjusting plate to move up and down through the thread, and the adjusting plate drives the two adjusting rods to extend and retract, so as to adjust the distance between one end of the two connecting rods and the axial center line of the hollow shaft, so as to adjust the moving stroke of the feeding frame during each reciprocating movement, and then adjust the length of each feeding of the material belt. According to the different sizes of the stamping products, the different feeding lengths of the material belt are adjusted, which improves the application range of the device and helps to improve the feeding accuracy.

[0022] Thirdly, the present invention can drive two adjusting disks to move in opposite directions by rotating the threaded rod, and the two adjusting disks can drive two centering rollers to move in opposite directions. Meanwhile, the two centering rollers can roll with the outer sides of the guide rollers, and the two centering rollers limit the two side edges of the material belt, thereby preventing the material belt from lateral deviation when the material belt moves on the outer side of the guide roller, so that the material belt is always located between the fixed mold and the movable mold when loading, thereby further improving the loading position accuracy of the material belt and improving the stamping quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the disassembled structure of the feeding mechanism in the present invention;

[0026] Figure 3 It is a first cross-sectional structural schematic diagram of the feeding mechanism in the present invention;

[0027] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 5 It is a schematic diagram of the internal structure of the hollow shaft in the present invention;

[0029] Figure 6 It is a second cross-sectional structural schematic diagram of the feeding mechanism in the present invention;

[0030] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at B in the middle;

[0031] Figure 8 It is a structural schematic diagram of the rotating rod in the present invention in a horizontal rightward state;

[0032] Fig. 9 It is a structural schematic diagram of the rotating rod in the present invention in a horizontal leftward state;

[0033] Fig.10 This is a schematic diagram of the first viewing angle structure of the rotating block in the present invention;

[0034] Fig.11 It is a schematic diagram of the second viewing angle structure of the rotating block in the present invention.

[0035] Reference numerals:

[0036] 1. Punch press; 2. Fixed die; 3. Moving die; 4. Side plate; 5. Slide; 6. Feed frame; 7. Connecting rod; 8. Hollow shaft; 9. Rotating rod; 10. Motor; 11. Driving gear; 12. Driven gear; 13. Material belt roller; 14. Trigger switch; 101. Adjusting rod; 102. Adjusting plate; 103. Screw; 201. Guide rod; 202. Clamping plate; 203. Center shaft; 204. Linking rod; 205. Connecting rod; 206. 6. Rubber pad; 301. Piston cylinder; 302. Pressure rod; 303. Piston plate; 304. Return spring; 305. First air pipe; 306. Cylindrical shell; 307. Rotating block; 308. Air relief groove; 309. Inflating groove; 310. Second air pipe; 311. Air relief hole; 312. Air tank; 313. Air pump; 401. Guide roller; 402. Threaded rod; 403. Adjusting disk; 404. Centering roller; 405. Positioning rod. DETAILED DESCRIPTION

[0037] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The present invention provides an automatic feeding punching device and a production process thereof by improvement. The technical solution of the present invention is:

[0039] Embodiment 1:

[0040] like Figures 1 to 11 As shown, an embodiment of the present invention provides an automatic feeding stamping device, including a stamping machine 1, a fixed die 2 and a movable die 3, a feeding mechanism is arranged on one side of the stamping machine 1; the feeding mechanism includes two side plates 4 arranged on one side of the stamping machine 1, a material belt roller 13 is rotatably connected between the two side plates 4 at the lower position, a slide groove 5 is provided on the upper side of the two side plates 4, a feeding frame 6 is slidably connected to the inner side of the two slide grooves 5, a clamping mechanism is arranged on the feeding frame 6, a hollow shaft 8 is rotatably connected to the upper side of the two side plates 4, and a hollow shaft 8 is rotatably connected between the feeding frame 6 and the hollow shaft 8. An adjustable reciprocating mechanism is provided; the clamping mechanism includes four guide rods 201 slidably inserted on the upper and lower sides of the feeding frame 6 and two center shafts 203 rotatably connected to the two ends of the inner side of the feeding frame 6, one end of the two guide rods 201 located at the same height is fixed with a clamping plate 202, two sides of the two center shafts 203 are symmetrically fixed with two linkage rods 204, one end of the four linkage rods 204 are rotatably connected to the two ends of the two clamping plates 202 through connecting rods 205, and a linkage air supply mechanism is provided between the feeding frame 6, the hollow rotating shaft 8, and the side plate 4.

[0041] Furthermore, the linkage air supply mechanism includes a piston cylinder 301 fixed on the upper side of the feeding frame 6, a cylindrical shell 306 fixed on one side of one of the side plates 4, an air tank 312 and an air pump 313 arranged between the two side plates 4, the inner side of the piston cylinder 301 is slidably connected with a piston plate 303, the lower end of the piston plate 303 is fixed with a pressure rod 302, the lower end of the pressure rod 302 is fixed to the upper side of an upper clamping plate 202, the lower end of the piston plate 303 is elastically connected to the inner bottom end of the piston cylinder 301 through a return spring 304, the upper end of the piston cylinder 301 is connected to the inner side of the cylindrical shell 306 through a first air pipe 305, the air outlet end of the air pump 313 is connected to the inner side of the air tank 312, the air outlet end of the air tank 312 is connected to the inner side of the cylindrical shell 306 through a second air pipe 310, and a reversing structure is provided between the cylindrical shell 306 and the hollow rotating shaft 8;

[0042] Through the linked air supply mechanism, the material belt can be fixed on the inner side of the feeding frame 6 when it is away from one end of the punching machine 1. When the feeding frame 6 drives the material belt to move to the nearest point of the punching machine 1, the fixation of the material belt can be released, thereby ensuring that the material belt does not slide when the feeding frame 6 pulls the material belt to feed the material, thereby improving the feeding accuracy.

[0043] Furthermore, the reversing structure includes a rotating block 307 fixed to one end of the outer side of the hollow rotating shaft 8 and rotatably connected to the inner side of the cylindrical shell 306, an air leakage hole 311 provided on the outer side of the cylindrical shell 306, an air leakage groove 308 for connecting the air leakage hole 311 with the first air pipe 305 is provided on one side of the rotating block 307, and an air charging groove 309 for connecting the first air pipe 305 with the second air pipe 310 is provided on one side of the rotating block 307 relative to the air leakage groove 308;

[0044] The reversing mechanism is used to adjust the flow direction of the airflow. When the rotating block 307 rotates to make the inflation groove 309 face upward, the inflation groove 309 connects the second air pipe 310 with the first air pipe 305. At this time, the compressed air inside the air tank 312 flows to the inner side of the piston cylinder 301 of the linkage air supply mechanism through the second air pipe 310, the inflation groove 309 and the first air pipe 305. The compressed air pushes the piston plate 303 to move downward, and the piston plate 303 drives the pressure rod 302 to move downward. The pressure rod 302 drives a clamping plate 202 located at the top of the clamping mechanism to move downward. This clamping plate 202 drives the two central shafts 203 to rotate synchronously through the two connecting rods 205 and the two linkage rods 204 at both ends. The two central axes 203 then drive a clamping plate 202 below to move upward synchronously through the other two linkage rods 204 and the two connecting rods 205, so that the two clamping plates 202 can be merged synchronously, so that the upper and lower sides of the material belt can be clamped and fixed. When the air relief groove 308 rotates to the top with the rotating block 307, the air relief groove 308 connects the first air pipe 305 and the air relief hole 311. At this time, the air inside the piston cylinder 301 in the linkage air supply mechanism is squeezed by the reset spring 304 and the piston plate 303, and is discharged outward through the first air pipe 305, the air relief groove 308, and the air relief hole 311, so that the two clamping plates 202 are separated and reset, and the clamping of the material belt is released.

[0045] Furthermore, rubber pads 206 are fixed at the middle positions of the two clamping plates 202 on the opposite sides thereof;

[0046] When the two clamping plates 202 are combined, the two rubber pads 206 are in contact with the upper and lower sides of the material belt respectively, thereby increasing the friction between the material belt and the two clamping plates 202, preventing the material belt and the clamping plates 202 from sliding, and improving the accuracy of the material belt feeding position.

[0047] Furthermore, the adjustable reciprocating mechanism includes two rotating rods 9 fixed at both ends of the hollow rotating shaft 8, and the inner sides of the two rotating rods 9 are slidably inserted with adjusting rods 101, one end of the two adjusting rods 101 is rotatably connected to the connecting rod 7, one end of the two connecting rods 7 is rotatably connected to the two ends of the feeding frame 6, and a screw rod 103 is rotatably connected at the middle section of the hollow rotating shaft 8, and an adjusting plate 102 is rotatably connected to the outer side of the screw rod 103 through a thread, and the two ends of the adjusting plate 102 are respectively fixed to one end of the two adjusting rods 101;

[0048] By rotating the screw 103 in the adjustable reciprocating mechanism, the screw 103 rotates and drives the adjustment plate 102 to move up and down through the thread, and the adjustment plate 102 drives the two adjustment rods 101 to extend and retract, so that the distance between one end of the two connecting rods 7 and the axial center line of the hollow shaft 8 can be adjusted, so that the moving stroke of the feeding frame 6 during each reciprocating movement can be adjusted, and then the length of each feeding of the material belt can be adjusted. According to the different sizes of the stamping products, the different feeding lengths of the material belt are adjusted, which improves the application range of the device and helps to improve the feeding accuracy.

[0049] Furthermore, a driven gear 12 is fixed to the outside of the hollow rotating shaft 8, a motor 10 is installed on one side of one side plate 4, and a driving gear 11 meshing with the driven gear 12 is fixed to the driving end of the motor 10;

[0050] The motor 10 can drive the hollow shaft 8 to rotate through the meshing between the driving gear 11 and the driven gear 12 to achieve automatic loading.

[0051] Furthermore, a trigger switch 14 is installed on the upper side of the movable mold 3, and the trigger switch 14 is electrically connected to the control circuit of the motor 10;

[0052] When the movable mold 3 moves upward, the trigger switch 14 located on its upper side will contact the top of the punching machine 1 to trigger a signal. The signal will be transmitted to the motor 10 of the adjustable reciprocating mechanism. The motor 10 is a servo motor. After receiving the signal, it can rotate a preset number of circles. The motor 10 can drive the hollow shaft 8 to rotate 360° through the engagement between the driving gear 11 and the driven gear 12. Every time the hollow shaft 8 rotates one circle, it can drive the two rotating rods 9 at both ends of it to rotate one circle. The two rotating rods 9 drive the feeding frame 6 to reciprocate once on the inner side of the two slide grooves 5 through two adjusting rods 101 and two connecting rods 7.

[0053] Furthermore, a guide roller 401, a threaded rod 402 and a fixed positioning rod 405 are rotatably connected between the two side plates 4, and two adjusting disks 403 are symmetrically threadedly connected to the outer ends of the threaded rod 402 through two threads in opposite directions. The two adjusting disks 403 are slidably sleeved on the outer sides of the positioning rod 405, and the outer sides of the two adjusting disks 403 are rotatably connected to centering rollers 404, and the two centering rollers 404 are rollingly connected to the guide rollers 401.

[0054] Rotate the threaded rod 402. Since the two outer ends of the threaded rod 402 are symmetrically connected to two adjustment disks 403 by two threads rotating in opposite directions, the threaded rod 402 can drive the two adjustment disks 403 to move in opposite directions when it rotates. The two adjustment disks 403 can drive the two centering rollers 404 to move in opposite directions. At the same time, the two centering rollers 404 can roll with the outer sides of the guide roller 401. The two centering rollers 404 limit the two side edges of the material belt, which can prevent the material belt from lateral deviation when it moves on the outer side of the guide roller 401, so that the material belt is always located between the fixed mold 2 and the movable mold 3 when loading, thereby further improving the loading position accuracy of the material belt.

[0055] Embodiment 2:

[0056] This embodiment also provides an automatic feeding stamping production process, which specifically includes the following steps:

[0057] Step 1: By rotating the screw 103 in the adjustable reciprocating mechanism, the screw 103 rotates and drives the adjusting plate 102 to move up and down through the thread, and the adjusting plate 102 drives the two adjusting rods 101 to extend and retract, thereby adjusting the distance between one end of the two connecting rods 7 and the axis of the hollow shaft 8, thereby adjusting the moving stroke of the feeding frame 6 during each reciprocating movement, and then adjusting the length of each feeding of the material belt. According to the different sizes of the stamping products, the different feeding lengths of the material belt are adjusted;

[0058] Step 2: The motor 10 in the feeding mechanism and the adjustable reciprocating mechanism drives the hollow shaft 8 to rotate 360° through the meshing between the driving gear 11 and the driven gear 12. The hollow shaft 8 drives the two rotating rods 9 at both ends to rotate one circle each time the hollow shaft 8 rotates one circle. The two rotating rods 9 drive the feeding frame 6 to reciprocate once inside the two chutes 5 through the two adjusting rods 101 and the two connecting rods 7.

[0059] Step 3, when the hollow shaft 8 in the feeding mechanism drives the rotating rod 9 to rotate to the horizontal right, the feeding frame 6 is farthest from the punching machine 1, and at the same time, the hollow shaft 8 drives the rotating block 307 of the reversing structure to rotate, so that the inflation groove 309 faces upward, and the inflation groove 309 connects the second air pipe 310 and the first air pipe 305. At this time, the compressed air inside the gas tank 312 flows through the second air pipe 310, the inflation groove 309, and the first air pipe 305 to the inner side of the piston cylinder 301 of the linkage air feeding mechanism, and the compressed air pushes the piston plate 303 therein to The piston plate 303 drives the pressure rod 302 to move downward, and the pressure rod 302 drives a clamping plate 202 located at the top of the clamping mechanism to move downward. The clamping plate 202 drives the two central shafts 203 to rotate synchronously through the two connecting rods 205 and two linkage rods 204 at both ends. The two central shafts 203 then drive a clamping plate 202 below to move upward synchronously through the other two linkage rods 204 and two connecting rods 205, so that the two clamping plates 202 are synchronously merged to clamp and fix the upper and lower sides of the material strip. At the same time, along with the hollow rotating shaft 8 With the continued rotation of the rotating rod 9, the hollow rotating shaft 8 drives the two rotating rods 9 to rotate counterclockwise from right to left, driving the feeding frame 6 to move in the direction of the punching machine 1. Since the clamping mechanism on the feeding frame 6 fixes the material belt, the feeding frame 6 will drive the material belt to move in the direction of the punching machine 1 at the same time, and pull the material belt between the fixed mold 2 and the movable mold 3, so that it can be punched by the punching machine 1. When the two rotating rods 9 rotate to the horizontal left, the material belt is pulled to the farthest end at this time, and the air release groove 308 in the reversing mechanism rotates to the farthest end along with the rotating block 307. At the top, the air relief groove 308 connects the first air pipe 305 and the air relief hole 311. At this time, the air inside the piston cylinder 301 in the linked air supply mechanism is squeezed by the reset spring 304 and the piston plate 303, and is discharged outward through the first air pipe 305, the air relief groove 308, and the air relief hole 311, so that the two clamping plates 202 are separated and reset, and the clamping of the material belt is released. Then, as the hollow rotating shaft 8 and the rotating rod 9 continue to rotate counterclockwise, the hollow rotating shaft 8 drives the rotating rod 9 to rotate again to a horizontal right angle, completing a feeding cycle.

[0060] Working principle: When the device is punching the material in the form of a strip, the strip is wound around the outside of the strip roller 13, and then one end of the strip is passed through the inner side of the feeding frame 6 and extended between the fixed mold 2 and the movable mold 3. The punching machine 1 can control the movable mold 3 to move downward intermittently, so as to punch the strip. When the movable mold 3 moves up, the trigger switch 14 located on its upper side will contact the top of the punching machine 1 to trigger the signal. The signal will be transmitted to the motor 10 of the adjustable reciprocating mechanism. The motor 10 is a servo motor. After receiving the signal, it can rotate a preset number of circles. The motor 10 can drive the hollow shaft 8 to rotate 360° through the meshing between the driving gear 11 and the driven gear 12. The hollow shaft 8 can drive the two rotating rods 9 at both ends to rotate one circle every time it rotates one circle. The two rotating rods 9 drive the feeding frame 6 to reciprocate once on the inner side of the two slide grooves 5 through the two adjusting rods 101 and the two connecting rods 7.

[0061] When the hollow shaft 8 drives the rotating rod 9 to rotate horizontally to the right, Figure 8 As shown, at this time, the feeding frame 6 is farthest from the punching machine 1, and at the same time, the hollow rotating shaft 8 drives the rotating block 307 of the reversing structure to rotate, so that the inflation groove 309 faces upward, and the inflation groove 309 connects the second air pipe 310 and the first air pipe 305. At this time, the compressed air inside the gas tank 312 flows to the inner side of the piston cylinder 301 of the linkage air supply mechanism through the second air pipe 310, the inflation groove 309, and the first air pipe 305. The compressed air pushes the piston plate 303 therein to move downward, and the piston plate 303 drives the pressure rod 302 to move downward, and the pressure rod 302 drives a clamping plate 202 located at the top of the clamping mechanism to move downward, and this clamping plate 202 drives the two central shafts 203 to move synchronously through the two connecting rods 205 and the two linkage rods 204 at both ends. The two central shafts 203 are rotated step by step, and the two central shafts 203 drive the lower clamping plate 202 to move upward synchronously through the other two linkage rods 204 and the two connecting rods 205, so that the two clamping plates 202 can be synchronously merged, so that the upper and lower sides of the material belt can be clamped and fixed. At the same time, as the hollow shaft 8 and the rotating rod 9 continue to rotate, the hollow shaft 8 drives the two rotating rods 9 to rotate counterclockwise from right to left, thereby driving the feeding frame 6 to move in the direction of the punching machine 1. Since the clamping mechanism on the feeding frame 6 fixes the material belt, the feeding frame 6 will drive the material belt to move in the direction of the punching machine 1 at the same time, and pull the material belt between the fixed mold 2 and the movable mold 3, so that it can be punched by the punching machine 1. When the two rotating rods 9 rotate to the horizontal left, as shown in FIG. Fig. 9As shown, at this time, the material belt is pulled to the farthest end, and at the same time, the air relief groove 308 in the reversing mechanism rotates to the top along with the rotating block 307, and the air relief groove 308 connects the first air pipe 305 and the air relief hole 311. At this time, the air inside the piston cylinder 301 in the linkage air supply mechanism is squeezed by the reset spring 304 and the piston plate 303, and is discharged outward through the first air pipe 305, the air relief groove 308, and the air relief hole 311, so that the two clamping plates 202 are separated and reset, and the clamping fixation of the material belt is released. Then, as the hollow rotating shaft 8 and the rotating rod 9 continue to rotate counterclockwise, the hollow rotating shaft 8 drives the rotating rod 9 to rotate to a horizontal right angle again, that is, a feeding cycle is completed;

[0062] The material strip is clamped and fixed by the clamping mechanism in the feeding mechanism, and the feeding frame 6 in the feeding mechanism is driven to reciprocate by the adjustable reciprocating mechanism, so that the material strip can be intermittently fed between the fixed mold 2 and the movable mold 3 of the punching machine 1, which not only greatly improves the feeding efficiency, but also prevents the material strip from slipping during the feeding process, thereby improving the accuracy of the feeding position of the material strip and improving the stamping quality of the product;

[0063] By rotating the screw 103 in the adjustable reciprocating mechanism, the screw 103 rotates and drives the adjusting plate 102 to move up and down through the thread, and the adjusting plate 102 drives the two adjusting rods 101 to extend and retract, so that the distance between one end of the two connecting rods 7 and the axial center line of the hollow shaft 8 can be adjusted, so that the moving stroke of the feeding frame 6 during each reciprocating movement can be adjusted, and then the length of each feeding of the material belt can be adjusted. According to the different sizes of the stamping products, the different feeding lengths of the material belt are adjusted, which improves the application range of the device and helps to improve the feeding accuracy;

[0064] According to the width of different material strips, the threaded rod 402 is rotated. Since the two outer ends of the threaded rod 402 are symmetrically connected to two adjustment disks 403 by two threads rotating in opposite directions, the threaded rod 402 can drive the two adjustment disks 403 to move in opposite directions when it rotates. The two adjustment disks 403 can drive the two centering rollers 404 to move in opposite directions. At the same time, the two centering rollers 404 can roll with the outer sides of the guide roller 401. The two centering rollers 404 limit the two side edges of the material strip, which can prevent the material strip from lateral deviation when it moves on the outer side of the guide roller 401, so that the material strip is always located between the fixed mold 2 and the movable mold 3 when loading. This further improves the loading position accuracy of the material strip and improves the product stamping quality.

[0065] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic feeding punching device, comprising a punching machine (1), a fixed die (2) and a movable die (3), characterized in that: A feeding mechanism is provided on one side of the punching machine (1); The feeding mechanism comprises two side plates (4) arranged on one side of the punching machine (1), the upper sides of the two side plates (4) are provided with slide grooves (5), the inner sides of the two slide grooves (5) are slidably connected with a feeding frame (6), the feeding frame (6) is provided with a clamping mechanism, the upper sides of the two side plates (4) are penetrated by a hollow rotating shaft (8) for rotational connection, and an adjustable reciprocating mechanism is provided between the feeding frame (6) and the hollow rotating shaft (8); The clamping mechanism comprises four guide rods (201) slidably inserted on the upper and lower sides of the feeding frame (6) and two central shafts (203) rotatably connected to the two ends of the inner side of the feeding frame (6); one end of the two guide rods (201) located at the same height is fixed with a clamping plate (202); two linkage rods (204) are symmetrically fixed on both sides of the two central shafts (203); one end of the four linkage rods (204) is rotatably connected to the two ends of the two clamping plates (202) through connecting rods (205); and a linkage air supply mechanism is provided between the feeding frame (6), the hollow rotating shaft (8) and the side plate (4); The linked air supply mechanism comprises a piston cylinder (301) fixed to the upper side of the feeding frame (6), a cylindrical shell (306) fixed to one side of one of the side plates (4), an air tank (312) and an air pump (313) arranged between the two side plates (4), the inner side of the piston cylinder (301) being slidably connected to a piston plate (303), the lower end of the piston plate (303) being fixed to a pressure rod (302), the lower end of the pressure rod (302) being fixed to the upper side of an upper clamping plate (202), and the piston plate The lower end of the piston cylinder (303) is elastically connected to the inner bottom end of the piston cylinder (301) through a return spring (304); the upper end of the piston cylinder (301) is connected to the inner side of the cylindrical shell (306) through a first air pipe (305); the air outlet end of the air pump (313) is connected to the inner side of the air tank (312); the air outlet end of the air tank (312) is connected to the inner side of the cylindrical shell (306) through a second air pipe (310); and a reversing structure is provided between the cylindrical shell (306) and the hollow rotating shaft (8); The reversing structure comprises a rotating block (307) fixed to one end of the outer side of the hollow rotating shaft (8) and rotatably connected to the inner side of the cylindrical shell (306), and an air leakage hole (311) provided on the outer side of the cylindrical shell (306); an air leakage groove (308) for connecting the air leakage hole (311) and the first air pipe (305) is provided on one side of the rotating block (307); and an air charging groove (309) for connecting the first air pipe (305) and the second air pipe (310) is provided on the side of the rotating block (307) opposite to the air leakage groove (308); A rubber pad (206) is fixed at the middle position of the opposite side of the two clamping plates (202); The adjustable reciprocating mechanism comprises two rotating rods (9) fixed at both ends of a hollow rotating shaft (8), an adjusting rod (101) is slidably inserted into the inner sides of the two rotating rods (9), one end of the two adjusting rods (101) is rotatably connected to a connecting rod (7), one end of the two connecting rods (7) is respectively rotatably connected to two ends of a feeding frame (6), a screw rod (103) is rotatably connected at the middle section of the hollow rotating shaft (8), the outer side of the screw rod (103) is rotatably connected to an adjusting plate (102) via a thread, and the two ends of the adjusting plate (102) are respectively fixed to one end of the two adjusting rods (101).

2. The automatic feeding punching device according to claim 1, characterized in that: A driven gear (12) is fixed to the outside of the hollow rotating shaft (8), a motor (10) is mounted on one side of one of the side plates (4), and a driving gear (11) meshing with the driven gear (12) is fixed to the driving end of the motor (10).

3. The automatic feeding punching device according to claim 2, characterized in that: A trigger switch (14) is installed on the upper side of the movable mold (3), and the trigger switch (14) is electrically connected to the control circuit of the motor (10).

4. The automatic feeding punching device according to claim 1, characterized in that: A guide roller (401), a threaded rod (402) and a fixed positioning rod (405) are rotatably connected between the two side plates (4); two adjusting disks (403) are symmetrically threadedly connected to the outer ends of the threaded rod (402) via two threads in opposite directions; the two adjusting disks (403) are slidably sleeved on the outer sides of the positioning rod (405); and the outer sides of the two adjusting disks (403) are rotatably connected to centering rollers (404); and the two centering rollers (404) are rollingly connected to the guide rollers (401).

5. The automatic feeding punching device according to claim 1, characterized in that: A material belt roller (13) is rotatably connected between the two side plates (4) at a lower position.

6. An automatic feeding stamping production process, comprising the automatic feeding stamping device according to any one of claims 1 to 5, characterized in that: The specific steps include: Step 1: By rotating the screw rod (103) in the adjustable reciprocating mechanism, the screw rod (103) rotates through the thread to drive the adjustment plate (102) to move up and down, and the adjustment plate (102) drives the two adjustment rods (101) to extend and retract, thereby adjusting the distance between one end of the two connecting rods (7) and the axis center line of the hollow shaft (8), thereby adjusting the movement stroke of the feeding frame (6) during each reciprocating movement, and further adjusting the length of each feeding of the material strip. According to the different sizes of the stamped products, the different feeding lengths of the material strip are adjusted; Step 2: The motor (10) in the feeding mechanism and the adjustable reciprocating mechanism drives the hollow rotating shaft (8) to rotate 360 ​​degrees through the meshing between the driving gear (11) and the driven gear (12). Each time the hollow rotating shaft (8) rotates one circle, the two rotating rods (9) at both ends thereof rotate one circle. The two rotating rods (9) drive the feeding frame (6) to reciprocate once inside the two chute (5) through the two adjusting rods (101) and the two connecting rods (7); Step 3: When the hollow rotating shaft (8) in the feeding mechanism drives the rotating rod (9) to rotate to the right horizontally, the feeding frame (6) is farthest from the punching machine (1). At the same time, the hollow rotating shaft (8) drives the rotating block (307) of the reversing structure to rotate, so that the inflation groove (309) faces upward, and the inflation groove (309) connects the second air pipe (310) and the first air pipe (305). At this time, the compressed air inside the gas tank (312) flows through the second air pipe (310), the inflation groove (309), and the first air pipe (305) to the inner side of the piston cylinder (301) of the linkage air feeding mechanism, and the compressed air pushes the piston plate (301) therein. 3) Move downward, the piston plate (303) drives the pressure rod (302) to move downward, the pressure rod (302) drives a clamping plate (202) located at the top of the clamping mechanism to move downward, the clamping plate (202) drives two central shafts (203) to rotate synchronously through two connecting rods (205) and two linkage rods (204) at both ends, and the two central shafts (203) drive a clamping plate (202) below to move upward synchronously through another two linkage rods (204) and two connecting rods (205), so that the two clamping plates (202) are synchronously merged to clamp and fix the upper and lower sides of the material strip, and at the same time, along with the hollow rotating shaft ( As the two rotating rods (8) and the rotating rod (9) continue to rotate, the hollow rotating shaft (8) drives the two rotating rods (9) to rotate counterclockwise from right to left, driving the feeding frame (6) to move in the direction of the punching machine (1). Since the clamping mechanism on the feeding frame (6) fixes the material belt, the feeding frame (6) will drive the material belt to move in the direction of the punching machine (1) at the same time, and pull the material belt between the fixed mold (2) and the movable mold (3), so that it can be punched by the punching machine (1). When the two rotating rods (9) rotate to the horizontal left, the material belt is pulled to the farthest end, and at the same time, the air release groove (308) in the reversing mechanism rotates to At the top, the air relief groove (308) connects the first air pipe (305) and the air relief hole (311). At this time, the air inside the piston cylinder (301) in the linkage air supply mechanism is squeezed by the return spring (304) and the piston plate (303), and is discharged outward through the first air pipe (305), the air relief groove (308), and the air relief hole (311), so that the two clamping plates (202) are separated and reset, and the clamping and fixing of the material belt are released. Then, as the hollow rotating shaft (8) and the rotating rod (9) continue to rotate counterclockwise, the hollow rotating shaft (8) drives the rotating rod (9) to rotate again to a horizontal right angle, and a feeding cycle is completed.

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