A punching machine capable of linked feeding and returning of materials

Abstract

The present invention relates to the technical field of punching machines, and in particular to a punching machine capable of linked feeding and withdrawing materials, comprising a punching machine bed, a punching die, a feeding mechanism and a withdrawing mechanism, wherein a sliding groove is vertically arranged along the punching machine bed, a punching machine ram is slidably installed in the sliding groove, a working table is arranged on the punching machine bed below the sliding groove, the punching machine die comprises an upper die and a lower die, the upper die is arranged at the bottom of the punching machine ram, the lower die is arranged on the working table, the feeding mechanism comprises a feeding drive assembly, a feeding guide plate and a feeding clamp seat, and the withdrawing mechanism comprises a flip plate and a withdrawing drive assembly, and the punching machine proposed by the present invention, when the punching machine ram drives the upper die to move back and forth from the first position to the second position, the feeding mechanism and the withdrawing mechanism are driven to work at the same time, thereby improving the synchronization rate among the three, and has low manufacturing cost, compact and reasonable structure, and small footprint.

Description

Technical Field

[0001] The invention relates to the technical field of punching machines, in particular to a punching machine capable of linked material feeding and returning. Background Art

[0002] Punching machines are generally stamping presses. In the process of economic development, punching machines have made great contributions. Punching machines are widely used in the field of stamping machinery for metal stamping parts. Punching machines can replace different molds, and thus have more processing capabilities than traditional processing machinery, and can save materials and energy compared with traditional mechanical processing. At present, punching machines mainly include manual punching machines, automatic punching machines and foot-operated punching machines. Most of these punching machines use manual and pneumatic or hydraulic feeding and withdrawing devices. Their power systems are air compression and hydraulic presses. They have a relatively complex structure, high cost, and occupy a certain working area. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0004] A punch press capable of linked feeding and withdrawing materials comprises a punch press bed, a punching die, a feeding mechanism and a withdrawing mechanism, wherein a sliding groove is vertically arranged on the punch press bed, a punch press ram is slidably installed in the sliding groove, a work table is arranged on the punch press bed below the sliding groove, the punching die comprises an upper die and a lower die, the upper die is arranged at the bottom of the punch press ram, the lower die is arranged on the work table, the punch press ram drives the upper die to move between a first position and a second position relative to the lower die in a vertical direction, the feeding mechanism comprises a feeding drive assembly, a feeding guide plate and a feeding clamp seat, the feeding guide plate is transversely arranged on one side of the lower die, the feeding clamp seat is slidably installed on the feeding guide plate, the feeding clamp seat is provided with two clamping blocks which can approach or move away from each other vertically, the feeding drive assembly is arranged On one side of the feed guide plate, and is transmission-connected with the feed clamp seat; when the upper mold moves from the first position to the second position, the feed drive assembly drives the feed clamp seat away from the lower mold, and the two clamps move away from each other; when the upper mold moves from the second position to the first position, the feed drive assembly drives the feed clamp seat close to the lower mold, and the two clamps move close to each other; the material return mechanism includes a flip plate and a material return drive assembly; a cavity is provided on the lower mold, and the flip plate is rotatably installed in the cavity; the material return drive assembly is arranged on one side of the lower mold, and is transmission-connected with the flip plate; when the upper mold moves from the second position to the first position, the material return drive assembly drives the flip plate to flip upward to a tilted state and then quickly reset.

[0005] As a further solution of the present invention: the feeding drive assembly includes a mounting frame, a driving wheel, a driven wheel and a transmission belt, the number of the mounting frames is two, and the two mounting frames are respectively mounted on the starting end and the end of the feeding guide plate, the driving wheel and the driven wheel are respectively rotatably mounted on the two mounting frames, the driving wheel and the driven wheel are connected by the transmission belt, the number of the feeding clamp seats is several, and the several feeding clamp seats are arranged in a horizontal interval, and a connecting rod is connected between two adjacent feeding clamp seats, the transmission belt is a disconnected structure, the starting end of the transmission belt is connected to the feeding clamp seat near the starting end of the feeding guide plate, and the end of the transmission belt is connected to the feeding clamp seat near the end of the feeding guide plate.

[0006] As a further solution of the present invention: the feeding drive assembly also includes a gear seat, a first gear, a first rack, a first return spring and a transmission shaft, the gear seat is arranged on one side of the driving wheel, a gear cavity is formed in the gear seat, the first gear is rotatably arranged in the gear cavity, the starting end of the transmission shaft is coaxially connected with the driving wheel, the end of the transmission shaft extends into the gear cavity and is coaxially connected with the first gear, a slot communicating with the gear cavity is opened on the top of the gear seat, the first rack is inserted in the slot, the first rack and the first gear are meshed, and the first return spring is pre-stressed between the first rack and the inner wall of the gear cavity.

[0007] As a further solution of the present invention: the upper and lower sides of the feed guide plate are bent to form guide grooves, the upper and lower ends of the feed clamp seat are respectively slidably arranged in the two guide grooves, the feed clamp seat is provided with a slide groove, two sliders are slidably installed in the slide groove, a second return spring is connected between the two sliders, the two clamping blocks are respectively installed on the two sliders, a stroke rod is provided on the side of the slider away from the clamping block, and a stroke groove for the stroke rod to extend into is provided on the feed guide plate, the stroke groove includes a first groove segment, a second groove segment, a third groove segment, a fourth groove segment and a fifth groove segment, the first groove segment and the third groove segment extend in the transverse direction, the central axis of the first groove segment and the central axis of the third groove segment do not coincide, the central axis of the second groove segment and The central axes of the first groove segment and the third groove segment intersect, the end of the first groove segment is connected to the beginning of the second groove segment, the end of the second groove segment is connected to the beginning of the third groove segment, the fourth groove segment extends vertically, the end of the third groove segment is connected to the beginning of the fourth groove segment, the central axis of the fifth groove segment intersects with the central axes of the fourth groove segment and the second groove segment, the end of the fourth groove segment is connected to the beginning of the fifth groove segment, the end of the fifth groove segment is connected to the second groove segment, the distance between the central axis of the feed guide plate and the beginning of the first groove segment is greater than the distance between the central axis of the feed guide plate and the end of the fourth groove segment, and the distance between the central axis of the feed guide plate and the end of the fourth groove segment is equal to half the length of the second return spring under normal conditions.

[0008] As a further scheme of the present invention: the material return drive assembly includes a rotating shaft, a second gear, a second rack, a sleeve, a sliding shaft, a third return spring and a lifting plate, a through hole communicating with the cavity is opened on the side of the lower mold, the rotating shaft is rotatably penetrated in the through hole, the starting end of the rotating shaft is connected to one side of the flip plate, the end of the rotating shaft passes through the through hole and is coaxially connected to the second gear, the sleeve is fixedly installed on one side of the second gear, the sliding shaft is penetrated and arranged in the sleeve, an annular boss is arranged on the outer surface of the sliding shaft, the third return spring is sleeved on the sliding shaft, and the starting end of the third return spring abuts against the annular boss, the end of the third return spring abuts against the inner wall of the sleeve, the second rack is installed at the starting end of the sliding shaft, the second rack is meshed with the second gear, the lifting plate is fixedly installed on the punch press slide, the end of the sliding shaft is in contact with the lifting plate, and a sliding protrusion is provided on the side of the lifting plate in contact with the sliding shaft.

[0009] As a further solution of the present invention: the material return drive assembly also includes a first pressure touch switch, a second pressure touch switch and an electric push rod, the first pressure touch switch is arranged on the punch press bed and is located above the lifting plate, when the lower mold is in the first position, the lifting plate and the first pressure touch switch are in contact, the second pressure touch switch is arranged on the punch press bed and is located below the lifting plate, when the lower mold is in the second position, the lifting plate and the second pressure touch switch are in contact, a mounting groove is provided on the side of the lifting plate that contacts the sliding shaft, the sliding protrusion is slidably arranged in the mounting groove, the electric push rod is arranged on the side of the lifting plate away from the sliding shaft, the telescopic end of the electric push rod extends into the mounting groove and is connected with the sliding protrusion, and the first pressure touch switch, the second pressure touch switch and the electric push rod are electrically connected.

[0010] As a further solution of the present invention: a first roller is rotatably mounted on the four corners of the feed clamp, the first roller and the inner wall of the guide groove are in rolling cooperation, and a second roller is rotatably mounted on the end of the sliding shaft, the second roller and the lifting plate are in rolling cooperation.

[0011] As a further solution of the present invention: a pressure contact block is provided on the punch slide, and a pressure contact block is provided on the punch slide, and the pressure contact block corresponds to the first rack.

[0012] As a further solution of the present invention: the material stripping mechanism further includes a material stripping plate, and the material stripping plate is obliquely arranged on one side of the lower die.

[0013] As a further solution of the present invention: the feeding mechanism also includes a supporting plate, which is arranged on one side of the feeding guide plate, and has a plurality of avoidance openings for avoiding the feeding clamp seat. A roller frame is provided on the supporting plate, and two rollers are arranged in the roller frame at an upper and lower interval.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the punch press proposed in the present invention, when the punch press slide drives the upper mold to move back and forth from the first position to the second position, simultaneously drives the feeding mechanism and the material return mechanism to work, thereby improving the synchronization rate among the three, with low manufacturing cost, compact and reasonable structure, and small footprint.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the punch bed structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the driving wheel part of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the first gear part of the present invention.

[0020] Figure 4 It is a partial structural schematic diagram of the feeding clamp seat of the present invention.

[0021] Figure 5 It is a partial structural schematic diagram of a slider of the present invention.

[0022] Figure 6 It is a partial structural schematic diagram of the first slot section of the present invention.

[0023] Figure 7 It is a partial structural schematic diagram of the lifting plate of the present invention.

[0024] Figure 8 It is a schematic diagram of the structure of the rotating shaft part of the present invention.

[0025] Fig. 9 It is a schematic diagram of the structure of the shaft sleeve part of the present invention.

[0026] In the figure:

[0027] 1. Punch bed, 11. Sliding groove, 12. Punch ram, 13. Work table, 121. Press block;

[0028] 2. stamping die, 21. upper die, 22. lower die, 221. cavity, 222. through hole;

[0029] 3. Feeding mechanism, 31. Feeding drive assembly, 32. Feeding guide plate, 33. Feeding clamp seat, 34. Loading plate, 311. Mounting frame, 312. Driving wheel, 313. Driven wheel, 314. Transmission belt, 315. Gear seat, 316. First gear, 317. First rack, 318. First return spring, 319. Transmission shaft, 3110. Gear cavity, 3111. Slot, 321. Guide slot, 322. Travel slot, 331. Clamp, 332. Slide slot, 333. Sliding block, 334. Travel rod, 335. First roller, 336. Second return spring, 341. Drum frame, 342. Drum, 3221. First slot section, 3222. Second slot section, 3223. Third slot section, 3224. Fourth slot section, 3225. Fifth slot section;

[0030] 4. material-removing mechanism, 41. flip plate, 42. material-removing driving assembly, 43. material-removing plate, 421. rotating shaft, 422. second gear, 423. second rack, 424. bushing, 425. sliding shaft, 426. third return spring, 427. lifting plate, 428. annular boss, 429. sliding protrusion, 4210. first pressure-touch switch, 4211. second pressure-touch switch, 4212. electric push rod, 4213. mounting groove, 4214. second roller;

[0031] 51. Rotating part, 52. First extension arm, 53. Second extension arm, 54. Connecting block, 55. Tension spring, 56. Limiting block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0033] See also Figures 1 to 9In an embodiment of the present invention, a punching machine capable of linked feeding and withdrawing materials comprises a punching machine bed 1, a punching die 2, a feeding mechanism 3 and a withdrawing mechanism 4, wherein a sliding groove 11 is vertically arranged on the punching machine bed 1, a punching machine slide 12 is slidably installed in the sliding groove 11, a working table 13 is arranged on the punching machine bed 1 below the sliding groove 11, the punching die 2 comprises an upper die 21 and a lower die 22, the upper die 21 is arranged at the bottom of the punching machine slide 12, and the lower die 22 is arranged at the working table 13. On the work table 13, the punch slide 12 drives the upper die 21 to move between the first position and the second position relative to the lower die 22 in the vertical direction. The feeding mechanism 3 includes a feeding drive assembly 31, a feeding guide plate 32 and a feeding clamp seat 33. The feeding guide plate 32 is arranged on one side of the lower die 22 in the transverse direction. The feeding clamp seat 33 is slidably mounted on the feeding guide plate 32. The feeding clamp seat 33 is provided with two clamping blocks 331 that can move closer to or away from each other in the vertical direction. The feeding drive assembly 31 includes a feeding guide plate 32 and a feeding clamp seat 33. The assembly 31 is arranged at one side of the feeding guide plate 32 and is transmission-connected with the feeding clamp seat 33. When the upper mold 21 moves from the first position to the second position, the feeding drive assembly 31 drives the feeding clamp seat 33 away from the lower mold 22, and the two clamping blocks 331 move away from each other. When the upper mold 21 moves from the second position to the first position, the feeding drive assembly 31 drives the feeding clamp seat 33 to approach the lower mold 22, and the two clamping blocks 331 approach each other. The material return mechanism 4 includes a flip plate 41 and a material return drive assembly 42. A cavity 221 is provided on the lower mold 22. The flip plate 41 is rotatably mounted in the cavity 221. The material return drive assembly 42 is arranged at one side of the lower mold 22 and is transmission-connected with the flip plate 41. When the upper mold 21 moves from the second position to the first position, the material return drive assembly 42 drives the flip plate 41 to flip upward to a tilted state and then quickly reset.

[0034] The stamping die 2 is used to stamp the material strip to be processed, the feeding mechanism 3 is used to transfer the material strip to be processed to the lower die 22, and the material removal mechanism 4 is used to push the finished product after stamping from the lower die 22. When the upper die 21 moves from the first position to the second position, a stamping work is completed. When the upper die 21 moves from the first position to the second position, the feeding drive assembly 31 drives the feeding clamp seat 33 away from the lower die 22, and the two clamping blocks 331 move away from each other and no longer clamp. The material strip to be processed is fixed to prevent the clamping block 331 from affecting the stamping. After completing a stamping work, when the upper mold 21 moves from the second position to the first position, the material return drive assembly 42 drives the flip plate 41 to flip up to an inclined state and then quickly resets, thereby pushing out the finished product on the lower mold 22. At the same time, the feeding drive assembly 31 drives the feeding clamp seat 33 to approach the lower mold 22, and the two clamping blocks 331 approach each other, thereby transferring the rear section of the material strip to be processed to the lower mold 22 for the next stamping work.

[0035] The feeding drive assembly 31 includes a mounting frame 311, a driving wheel 312, a driven wheel 313 and a transmission belt 314. The number of the mounting frames 311 is two, and the two mounting frames 311 are respectively mounted at the beginning and the end of the feeding guide plate 32. The driving wheel 312 and the driven wheel 313 are rotatably mounted on the two mounting frames 311 respectively. The driving wheel 312 and the driven wheel 313 are connected by the transmission belt 314. The number of the feeding clamp seats 33 is several, and the several feeding clamp seats 33 are arranged along the horizontal The feeding clamp seats 33 are arranged in an interval arrangement, and a connecting rod is connected between two adjacent feeding clamp seats 33. The transmission belt 314 is a disconnected structure. The starting end of the transmission belt 314 is connected to the feeding clamp seat 33 near the starting end of the feeding guide plate 32, and the end of the transmission belt 314 is connected to the feeding clamp seat 33 near the end of the feeding guide plate 32. During operation, the driving wheel 312 is driven to rotate clockwise or clockwise, thereby driving the feeding clamp seat 33 to reciprocate in the feeding guide plate 32 to approach or move away from the lower mold 22.

[0036] The feeding drive assembly 31 also includes a gear seat 315, a first gear 316, a first rack 317, a first return spring 318 and a transmission shaft 319. The gear seat 315 is arranged on one side of the driving wheel 312. A gear cavity 3110 is formed in the gear seat 315. The first gear 316 is rotatably arranged in the gear cavity 3110. The starting end of the transmission shaft 319 is coaxially connected to the driving wheel 312. The end of the transmission shaft 319 extends into the gear cavity 3110 and is coaxially connected to the first gear 316. A slot 3111 communicating with the gear cavity 3110 is opened on the top of the gear seat 315. The first rack 317 is inserted in the slot 3111. The first rack 317 is meshed with the first gear 316. The first return spring 318 is pre-pressed between the first rack 317 and Between the inner walls of the gear cavity 3110, when the punch slide 12 drives the upper mold 21 to move from the first position to the second position, the punch slide 12 pushes the first rack 317 to move downward, thereby driving the first gear 316 to rotate clockwise, thereby driving the driving wheel 312 to rotate clockwise through the transmission shaft 319, so as to drive the feeding clamp seat 33 away from the lower mold 22. When the punch slide 12 drives the upper mold 21 to move from the second position to the first position, the punch slide 12 moves away from the first rack 317. Under the action of the first return spring 318, the first rack 317 moves upward, thereby driving the first gear 316 to rotate counterclockwise, thereby driving the driving wheel 312 to rotate counterclockwise through the transmission shaft 319, so as to drive the feeding clamp seat 33 to approach the lower mold 22.

[0037] The upper and lower sides of the feed guide plate 32 are bent to form guide grooves 321. The upper and lower ends of the feed clamp seat 33 are respectively slidably arranged in the two guide grooves 321. The feed clamp seat 33 is provided with a slide groove 332. Two sliders 333 are slidably installed in the slide groove 332. A second return spring 336 is connected between the two sliders 333. The two clamp blocks 331 are respectively installed on the two sliders 333. A side of the slider 333 away from the clamp block 331 is provided with a return spring 336. The feeding guide plate 32 is provided with a travel groove 322 for the travel rod 334 to extend into, and the travel groove 322 includes a first groove section 3221, a second groove section 3222, a third groove section 3223, a fourth groove section 3224 and a fifth groove section 3225. The first groove section 3221 and the third groove section 3223 extend in the transverse direction, and the central axis of the first groove section 3221 does not coincide with the central axis of the third groove section 3223. The central axis of the second groove section 3222 and the fifth groove section 3225 are not coincident. The central axes of the first slot segment 3221 and the third slot segment 3223 intersect, the end of the first slot segment 3221 is connected to the beginning of the second slot segment 3222, the end of the second slot segment 3222 is connected to the beginning of the third slot segment 3223, the fourth slot segment 3224 extends vertically, the end of the third slot segment 3223 is connected to the beginning of the fourth slot segment 3224, the central axis of the fifth slot segment 3225 is connected to the central axis of the fourth slot segment 3224 and the second slot segment 3222. The axes intersect, the end of the fourth slot segment 3224 is connected to the beginning of the fifth slot segment 3225, the end of the fifth slot segment 3225 is connected to the second slot segment 3222, the distance between the central axis of the feed guide 32 and the beginning of the first slot segment 3221 is greater than the distance between the central axis of the feed guide 32 and the end of the fourth slot segment 3224, the distance between the central axis of the feed guide 32 and the end of the fourth slot segment 3224 is equal to half the length of the second return spring 336 under normal conditions.

[0038] It should be noted that the number of the travel grooves 322 is twice the number of the feed clamp seats 33. One feed clamp seat 33 is matched with two travel grooves 322. During the movement of the feed clamp seat 33, the travel rods 334 on the two sliders 333 move along the two travel grooves 322 respectively, so that the two sliders 333 are close to or away from each other, thereby driving the two clamping blocks 331 to move close to or away from each other to clamp or release the material strip to be processed. When the feed clamp seat 33 is close to the lower mold 22, the travel rod 334 moves along the first slot section 3221, the second slot section 3222 and the third slot section 3223, thereby driving the two clamping blocks 331 to move close to each other, clamping the material strip to be processed and transporting it to the lower mold 22. When the travel rod 334 moves to the end of the third slot section 3223, the two clamping blocks 331 move close to each other. The second return spring 336 will separate the two clamping blocks 331 from each other and release the material strip to be processed under the action of the second return spring 336, so that the travel rod 334 moves to the end of the fourth slot section 3224. At this time, the second return spring 336 is in a normal state. When the feeding clamp seat 33 is away from the lower mold 22, the travel rod 334 enters the second slot section 3222 along the fifth slot section 3225 and moves to the beginning of the first slot section 3221. During this process, the second return spring 336 is in a stretched state. In this way, when the feeding clamp seat 33 is close to the lower mold 22, the second return spring 336 will pull the two clamping blocks 331 closer to each other, guide the travel rod 334 to move along the second slot section 3222 into the third slot section 3223, and prevent the travel rod 334 from entering the fifth slot section 3225, resulting in the inability to clamp the material strip to be processed and transport it to the lower mold 22.

[0039] It should also be noted that a one-way baffle can be provided at the connection between the fifth slot section 3225 and the second slot section 3222 to prevent the stroke rod 334 from entering the fifth slot section 3225 when the feed clamp seat 33 is close to the lower mold 22. The one-way baffle includes a rotating portion 51, a first extension arm 52 and a second extension arm 53. The rotating portion 51 is rotatably arranged on the feed guide plate 32. A connecting block 54 is provided on the feed guide plate 32. A tension spring 55 is connected between the connecting block 54 and the first extension arm 52. A limiting block 56 is also provided on the feed guide plate 32. Under the action of the tension spring 55, the second extension arm 53 and the The second extension arm 53 abuts against the limit block 56. When the second extension arm 53 abuts against the limit block 56, the surface of the second extension arm 53 is flush with the groove wall of the second groove section 3222. In this way, when the travel rod 334 enters the second groove section 3222 along the fifth groove section 3225, the second extension arm 53 can rotate without affecting the travel path of the travel rod 334. When the travel rod 334 moves in the second groove section 3222, the second extension arm 53 does not rotate under the restriction of the limit block 56, thereby restricting the travel path of the travel rod 334 and preventing the travel rod 334 from entering the fifth groove section 3225.

[0040] The material return drive assembly 42 includes a rotating shaft 421, a second gear 422, a second rack 423, a sleeve 424, a sliding shaft 425, a third reset spring 426 and a lifting plate 427. A through hole 222 communicating with the cavity 221 is opened on the side of the lower mold 22. The rotating shaft 421 is rotatably inserted into the through hole 222. The starting end of the rotating shaft 421 is connected to one side of the flip plate 41, and the end of the rotating shaft 421 passes through the through hole 222 and is coaxially connected to the second gear 422. The sleeve 424 is fixedly mounted on one side of the second gear 422, the sliding shaft 425 is penetrated in the sleeve 424, the outer surface of the sliding shaft 425 is provided with an annular boss 428, the third return spring 426 is sleeved on the sliding shaft 425, and the starting end of the third return spring 426 abuts against the annular boss 428, and the end of the third return spring 426 abuts against the inner wall of the sleeve 424, the second rack 423 is mounted on the starting end of the sliding shaft 425, and the second rack 423 is installed on the starting end of the sliding shaft 425. The strip 423 is meshed with the second gear 422, the lifting plate 427 is fixedly mounted on the punch ram 12, the end of the sliding shaft 425 is in contact with the lifting plate 427, and a sliding protrusion 429 is provided on the lifting plate 427 on the side in contact with the sliding shaft 425. When the punch ram 12 drives the upper die 21 to move from the second position to the first position, the punch ram 12 drives the lifting plate 427 to move upward, so that the sliding protrusion 429 is in contact with the sliding shaft 425. The second rack 423 drives the second gear 422 to rotate counterclockwise, thereby driving the flip plate 41 to flip up to an inclined state, and pushing the finished product on the lower mold 22 out; when the lifting plate 427 rises to a certain position, the sliding protrusion 429 will disengage from the sliding shaft 425, and the sliding shaft 425 will be reset under the action of the third reset spring 426, driving the second gear 422 to rotate clockwise, thereby driving the flip plate 41 to flip down and reset.

[0041] The material return drive assembly 42 further includes a first pressure touch switch 4210, a second pressure touch switch 4211 and an electric push rod 4212, wherein the first pressure touch switch 4210 is arranged on the punch bed 1 and is located above the lifting plate 427, and when the lower die 22 is in the first position, the lifting plate 427 is in contact with the first pressure touch switch 4210, and the second pressure touch switch 4211 is arranged on the punch bed 1 and is located below the lifting plate 427, and when the lower die 22 is in the second position, the lifting plate 427 is in contact with the first pressure touch switch 4210. 27 and the second pressure touch switch 4211 are in contact, a mounting groove 4213 is provided on the side of the lifting plate 427 that contacts the sliding shaft 425, the sliding protrusion 429 is slidably arranged in the mounting groove 4213, the electric push rod 4212 is arranged on the lifting plate 427 at a side away from the sliding shaft 425, the telescopic end of the electric push rod 4212 extends into the mounting groove 4213 and is connected to the sliding protrusion 429, the first pressure touch switch 4210, the second pressure touch switch 4211 and the electric push rod 4212 are in contact with the second pressure touch switch 4211, the lifting plate 427 and the sliding shaft 425 ... The electric push rod 4212 is electrically connected to the punch press slide 12. When the punch press slide 12 drives the upper die 21 to move from the second position to the first position, the lifting plate 427 contacts the first pressure touch switch 4210, and the first pressure touch switch 4210 is triggered to control the telescopic end of the electric push rod 4212 to retract, thereby driving the sliding protrusion 429 to retract into the installation groove 4213, so as to avoid the sliding protrusion 429 and the sliding shaft 425 from contacting during stamping, causing the flip plate 41 to flip up and affect the progress of the stamping work. When the punch press slide 12 drives the upper mold 21 to move from the first position to the second position, the lifting plate 427 contacts the second pressure touch switch 4211, and the telescopic end of the electric push rod 4212 is controlled to extend by triggering the second pressure touch switch 4211, thereby driving the sliding protrusion 429 to protrude from the mounting groove 4213. In this way, after the stamping work is completed, when the lifting plate 47 rises, the sliding protrusion 429 can contact the sliding shaft 425 to push the second rack 423 to move.

[0042] In order to avoid hard contact, the four corners of the feeding clamp 33 are rotatably mounted with a first roller 335, the first roller 335 and the inner wall of the guide groove 321 are rollingly fitted, and the end of the sliding shaft 425 is rotatably mounted with a second roller 4214, the second roller 4214 and the lifting plate 427 are rollingly fitted.

[0043] The punch ram is provided with a pressure contact block 121 , and the pressure contact block 121 corresponds to the first rack. Thus, the punch ram 12 pushes the first rack 317 to move through the pressure contact block 121 during the movement process.

[0044] The material stripping mechanism 4 further includes a material stripping plate 43 , which is obliquely arranged on one side of the lower die 22 . The finished product pushed out from the lower die 22 can fall through the material stripping plate 43 , which is convenient for centralized collection.

[0045] The feeding mechanism 3 also includes a supporting plate 34, which is arranged on one side of the feeding guide plate 32. The supporting plate 34 is provided with an avoidance opening for avoiding the feeding clamp seat 33. A roller frame 341 is provided on the supporting plate, and two rollers 342 are arranged in the upper and lower intervals in the roller frame 341. The supporting plate 34 is used to carry the material strip to be processed. The setting of the avoidance opening does not affect the movement of the feeding clamp seat 33 and the clamp block 331. In addition, through the setting of the roller frame 341 and the roller 342, the material strip to be processed can pass between the two rollers 342, and the material strip to be processed is limited to prevent the material strip to be processed from being displaced during the punching process, thereby affecting the progress of the stamping work.

[0046] The working principle of the present invention is: during the stamping process, when the punch press slide 12 drives the upper die 21 to move from the first position to the second position, the punch press slide 12 pushes the first rack 317 to move downward, drives the first gear 316 to rotate clockwise, thereby drives the driving wheel 312 to rotate clockwise through the transmission shaft 319, so as to drive the feeding clamp seat 33 away from the lower die 22. During this process, the travel rod 334 and the travel groove 322 cooperate to make the two clamping blocks 331 move away from each other and no longer clamp and fix the material strip to be processed, so as to avoid the clamping blocks 331 affecting the stamping; after the stamping is completed, the punch press slide 12 drives the upper die 21 to move from the second position to the first position, and the punch press slide 12 drives the lifting plate 427 to move upward, so that the sliding protrusion 429 contacts the sliding shaft 425 to push the second rack 423 to move, and the second rack 423 drives the The second gear 422 rotates counterclockwise, thereby driving the flip plate 41 to flip up to an inclined state, and pushing the finished product on the lower mold 22 to the stripping plate 43. When the lifting plate 427 rises to a certain position, the sliding protrusion 429 will disengage from the sliding shaft 425. The sliding shaft 425 is reset under the action of the third return spring 426, driving the second gear 422 to rotate clockwise, thereby driving the flip plate 41 to flip down and reset. At this time, the punch slide 12 is away from the first rack 317. Under the action of the first return spring 318, the first rack 317 moves up, thereby driving the first gear 316 to rotate counterclockwise, thereby driving the driving wheel 312 to rotate counterclockwise through the transmission shaft 319, so as to drive the feeding clamp seat 33 to approach the lower mold 22. In this process, the two clamps 331 approach each other, clamp the material strip to be processed and push it to the lower mold 22 to enter the next stamping work.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A punching machine capable of linked feeding and returning of materials, characterized in that: include: A punch press bed, wherein a sliding groove is vertically arranged on the punch press bed, a punch press ram is slidably installed in the sliding groove, and a work surface is arranged on the punch press bed below the sliding groove; A stamping die, the stamping die comprising an upper die and a lower die, the upper die being arranged at the bottom of the punching ram, the lower die being arranged on the work surface, and the punching ram driving the upper die to move between a first position and a second position relative to the lower die in a vertical direction; A feeding mechanism, the feeding mechanism comprising a feeding drive assembly, a feeding guide plate and a feeding clamp seat, the feeding guide plate being arranged on one side of the lower die in the transverse direction, the feeding clamp seat being slidably mounted on the feeding guide plate, the feeding clamp seat being provided with two clamping blocks which can be close to or away from each other in the vertical direction, the feeding drive assembly being arranged on one side of the feeding guide plate and being transmission-connected with the feeding clamp seat, when the upper die moves from the first position to the second position, the feeding drive assembly drives the feeding clamp seat away from the lower die, and the two clamping blocks are away from each other, and when the upper die moves from the second position to the first position, the feeding drive assembly drives the feeding clamp seat close to the lower die, and the two clamping blocks are close to each other; The material-returning mechanism comprises a flip plate and a material-returning driving assembly. A cavity is provided on the lower die, the flip plate is rotatably mounted in the cavity, the material-returning driving assembly is arranged on one side of the lower die, and is transmission-connected with the flip plate. When the upper die moves from the second position to the first position, the material-returning driving assembly drives the flip plate to flip upward to a tilted state and then quickly resets the flip plate. The feeding drive assembly includes a mounting frame, a driving wheel, a driven wheel and a transmission belt. The number of the mounting frames is two, and the two mounting frames are respectively mounted on the starting end and the end of the feeding guide plate. The driving wheel and the driven wheel are respectively rotatably mounted on the two mounting frames. The driving wheel and the driven wheel are connected by the transmission belt. The number of the feeding clamp seats is several, and the several feeding clamp seats are arranged in a lateral interval. A connecting rod is connected between two adjacent feeding clamp seats. The transmission belt is a disconnected structure. The starting end of the transmission belt is connected to the feeding clamp seat near the starting end of the feeding guide plate, and the end of the transmission belt is connected to the feeding clamp seat near the end of the feeding guide plate. The feeding drive assembly also includes a gear seat, a first gear, a first rack, a first return spring and a transmission shaft, wherein the gear seat is arranged on one side of the driving wheel, a gear cavity is formed in the gear seat, the first gear is rotatably arranged in the gear cavity, the starting end of the transmission shaft is coaxially connected with the driving wheel, the end of the transmission shaft extends into the gear cavity and is coaxially connected with the first gear, a slot communicating with the gear cavity is opened on the top of the gear seat, the first rack is inserted in the slot, the first rack is meshed with the first gear, and the first return spring is pre-pressed between the first rack and the inner wall of the gear cavity; The material return driving assembly comprises a rotating shaft, a second gear, a second rack, a shaft sleeve, a sliding shaft, a third return spring and a lifting plate, a side surface of the lower mold is provided with a through hole communicating with the cavity, the rotating shaft is rotatably arranged in the through hole, the starting end of the rotating shaft is connected with one side of the flip plate, the end of the rotating shaft passes through the through hole and is coaxially connected with the second gear, the shaft sleeve is fixedly installed on one side of the second gear, the sliding shaft is penetrated and arranged in the shaft sleeve, the outer surface of the sliding shaft is provided with an annular boss, the third return spring is sleeved on the sliding shaft, and the starting end of the third return spring abuts against the annular boss, the end of the third return spring abuts against the inner wall of the shaft sleeve, the second rack is installed at the starting end of the sliding shaft, the second rack is meshed with the second gear, the lifting plate is fixedly installed on the punch press slide, the end of the sliding shaft is in contact with the lifting plate, and a sliding protrusion is provided on the lifting plate on the side in contact with the sliding shaft; The material return drive assembly also includes a first pressure touch switch, a second pressure touch switch and an electric push rod, the first pressure touch switch is arranged on the punch press bed and is located above the lifting plate, when the lower mold is in the first position, the lifting plate and the first pressure touch switch are in contact, the second pressure touch switch is arranged on the punch press bed and is located below the lifting plate, when the lower mold is in the second position, the lifting plate and the second pressure touch switch are in contact, a mounting groove is provided on the side of the lifting plate in contact with the sliding shaft, the sliding protrusion is slidably arranged in the mounting groove, the electric push rod is arranged on the side of the lifting plate away from the sliding shaft, the telescopic end of the electric push rod extends into the mounting groove and is connected with the sliding protrusion, and the first pressure touch switch, the second pressure touch switch and the electric push rod are electrically connected.

2. The punching machine capable of linked material feeding and withdrawing according to claim 1, characterized in that: The upper and lower sides of the feed guide plate are bent to form guide grooves, and the upper and lower ends of the feed clamp seat are respectively slidably arranged in the two guide grooves. The feed clamp seat is provided with a slide groove, and two sliders are slidably installed in the slide groove. A second return spring is connected between the two sliders. The two clamping blocks are respectively installed on the two sliders. A stroke rod is provided on the side of the slider away from the clamping block. The feed guide plate is provided with a stroke groove for the stroke rod to extend into, and the stroke groove includes a first groove segment, a second groove segment, a third groove segment, a fourth groove segment and a fifth groove segment. The first groove segment and the third groove segment extend in the transverse direction, and the central axis of the first groove segment and the central axis of the third groove segment do not coincide, and the central axis of the second groove segment and the first groove segment do not coincide. , the central axis of the third slot segment intersects, the end of the first slot segment is connected to the beginning of the second slot segment, the end of the second slot segment is connected to the beginning of the third slot segment, the fourth slot segment extends vertically, the end of the third slot segment is connected to the beginning of the fourth slot segment, the central axis of the fifth slot segment intersects with the central axes of the fourth slot segment and the second slot segment, the end of the fourth slot segment is connected to the beginning of the fifth slot segment, the end of the fifth slot segment is connected to the second slot segment, the distance between the central axis of the feed guide plate and the beginning of the first slot segment is greater than the distance between the central axis of the feed guide plate and the end of the fourth slot segment, and the distance between the central axis of the feed guide plate and the end of the fourth slot segment is equal to half the length of the second return spring under normal conditions.

3. The punching machine capable of linked material feeding and withdrawing according to claim 2, characterized in that: The four corners of the feeding clamp seat are rotatably mounted with first rollers, the first rollers and the inner wall of the guide groove are rollingly matched, and the end of the sliding shaft is rotatably mounted with second rollers, the second rollers and the lifting plate are rollingly matched.

4. The punching machine capable of linked material feeding and withdrawing according to claim 1, characterized in that: A pressure contact block is provided on the punch ram, and the pressure contact block corresponds to the first rack.

5. The punching machine capable of linked material feeding and withdrawing according to claim 1, characterized in that: The material stripping mechanism also includes a material stripping plate, which is obliquely arranged on one side of the lower die.

6. The punching machine capable of linked material feeding and withdrawing according to claim 1, characterized in that: The feeding mechanism also includes a bearing plate, which is arranged on one side of the feeding guide plate. The bearing plate is provided with an escape opening for avoiding the feeding clamp seat. A roller frame is provided on the bearing plate, and two rollers are arranged in the roller frame at an upper and lower interval.

Images