Stamping die for stamping metal piece and stamping process of stamping die

Abstract

The invention relates to the technical field of stamping tools, in particular to a stamping die for stamping a metal piece and a stamping process thereof.The other side, located beside a stamping plate, of a workbench is provided with a conveying part and a steering part, and the conveying part is used for conveying a metal square pipe fitting into a gap until the metal square pipe fitting penetrates out of the gap and abuts against the side end of a check block; at the moment, the punching head is triggered to move downwards, the bottom end of the punching head sequentially penetrates through the top penetrating opening, the side penetrating opening and the punching groove, the punching action on one side of the metal square pipe fitting is completed, then the steering part is used for driving the metal square pipe fitting to rotate in the axial direction, the punching action on the remaining side of the metal square pipe fitting is completed, and when the metal square pipe fitting rotates by a circle in the axial direction, punching is completed. And meanwhile, the movable annular plate drives the transverse plate to move, so that the metal square pipe fitting crosses the stop block to continue to transversely move until the metal square pipe fitting transversely moves out of the punching plate and is blanked along the discharging opening, and therefore automatic feeding, positioning clamping and discharging are achieved, the four faces of the square pipe are automatically punched in sequence, and operation is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of stamping tools, and in particular to a stamping die for stamping metal parts and a stamping process thereof. Background Art

[0002] In mechanical processing production, it is often necessary to open holes or grooves in the side walls of metal pipes. The punching process is performed by a stamping die. The product quality is relatively stable and the safety is high. In the existing stamping die or punching equipment, the metal pipe is usually transported to the processing position by a feeding device or manually, and the metal pipe is inserted into the metal pipe by a rod. The rod is provided with a plurality of positioning holes corresponding to the punching needle, and then fixed by a clamping part. After positioning and clamping, the punching needle moves down toward the positioning hole to complete the punching action. For example, Chinese patent document CN103658332A A pipe punching composite die disclosed in CN216857938U, a small square steel pipe multi-hole simultaneous punching die disclosed in CN216857938U, etc., all use similar principle structures for punching operations. However, metal pipes still require manual loading, positioning, clamping and unloading, and especially for metal square pipe fittings, generally four sides of the square pipe need to be punched, so it is necessary to repeatedly operate the metal square pipe fittings axially, and after each side is rotated into place, it is positioned and clamped, resulting in troublesome operation, heavy workload, low work efficiency, and repeated manual fatigue operation is more likely to cause safety hazards. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a stamping die and a stamping process for stamping metal parts, so as to solve the problem that the existing metal square tube parts are difficult to operate and prone to potential safety hazards during the four-side punching operation.

[0004] Based on the above purpose, the present invention provides a stamping die for stamping metal parts, including a stamping plate fixed on a workbench, and a stamping head is provided above the stamping plate for moving downward to punch holes in metal square pipe parts: The punching plate is arranged upright on the workbench, the middle of the punching plate is rotatably connected with a movable ring plate, the middle of the movable ring plate is provided with a rectangular hole, the top of the punching plate is provided with a top through-hole, the side end of the movable ring plate is provided with a side through-hole, the punching plate is connected with a horizontal plate, and one end of the horizontal plate passing through the outside of the punching plate is connected with a stopper; A telescopic part is provided on one side of the workbench next to the stamping plate, and a discharge port is provided at a position between the stamping plate and the telescopic part on the workbench. A positioning block is connected to the output end of the telescopic part, and a punching slot is provided on the side end of the positioning block. The positioning block is driven by the telescopic part to extend into the rectangular hole, and a gap is left between the positioning block and the rectangular hole for the metal square tube to pass horizontally therethrough. A conveying part and a steering part are provided on the other side of the workbench next to the stamping plate. The conveying part is used to convey the metal square tube into the gap until the metal square tube passes through the gap and reaches the side end of the block, triggering the punching head to move downward, and the bottom end of the punching head passes through the top hole, the side hole and the punching slot in sequence to complete the punching action on one side of the metal square tube, and the steering part is used to drive the metal square tube to rotate along its axial direction to complete the punching action on the remaining side of the metal square tube until the metal square tube rotates axially for one circle, triggering the contraction of the telescopic part, and at the same time driving the cross plate to move through the movable ring plate, so that the metal square tube continues to move horizontally over the block and falls along the discharge port.

[0005] Preferably, the steering part includes a fixed ring frame fixed on the workbench, a movable ring frame is rotatably connected inside the fixed ring frame, and a roller is connected inside the movable ring frame. When the metal square tube moves laterally along the movable ring frame, the roller abuts against the opposite sides of the metal square tube, and the metal square tube is driven to rotate synchronously through the axial rotation of the movable ring frame.

[0006] Preferably, the conveying part comprises a transmission belt for conveying the metal square pipe piece in a directional manner toward the inside of the movable ring frame.

[0007] Preferably, the cross plate passes through the top of the stamping plate horizontally, and a plate hole is opened on the cross plate at the top hole correspondingly. An elastic member is connected between the top of the cross plate and the inside of the stamping plate to push the cross plate downward. A push block is connected to the outer end of the movable ring plate. When the metal square tube drives the movable ring plate to rotate axially for one circle, the push block pushes the cross plate up and compresses the elastic member so that the metal square tube passes the block and continues to move horizontally.

[0008] Preferably, one side end face of the push block is designed as an inclined end face. When the push block rotates with the movable ring plate, the inclined end face of the push block pushes the cross plate until the cross plate is pushed upward and the elastic member is compressed.

[0009] Preferably, a first sensor is provided on the side end of the stopper facing the stamping plate. When the metal square tube is rotated so that the side hole and the punching groove face upward and face the top hole, the metal square tube hits the first sensor, triggering the stamping head to complete a punching action.

[0010] Preferably, a second sensor is provided at the bottom end of the stopper. When the metal square tube rotates axially one circle, the movable ring plate drives the cross plate to move, so that the metal square tube continues to move horizontally over the stopper. The bottom end of the stopper abuts against the top end of the metal square tube, triggering the contraction of the telescopic part.

[0011] Preferably, the stop block includes an inner block close to one end of the stamping plate and an outer block away from one end of the stamping plate. The bottom end of the outer block is elastically and telescopically connected to the telescopic block. When the metal square tube rotates axially one circle, the cross plate is driven to move by the movable ring plate, so that the metal square tube continues to move horizontally over the inner block until it abuts against the side end of the telescopic block and triggers the punching action on the tail end of the metal square tube. One side end face of the telescopic block is designed as an inclined end face. When the telescopic part drives the positioning block to move horizontally into the rectangular hole, the positioning block abuts against and pushes the inclined end face of the telescopic block, so that the telescopic block is retracted upward into the outer block.

[0012] Preferably, the stoppers are symmetrically connected to both sides of the bottom end of the horizontal plate to avoid punching holes on the metal square tube.

[0013] The present invention also provides a stamping process for stamping a metal part, comprising the following steps: A conveying part and a turning part are provided on the other side of the workbench beside the stamping plate. The conveying part is used to convey the metal square pipe toward the gap until the metal square pipe passes through the gap and reaches the side end of the stopper. At this time, the punching head is triggered to move down to complete the punching action on one side of the metal square pipe. The steering part is then used to drive the metal square tube to rotate along its axial direction to complete the punching action on the remaining side of the metal square tube, until the metal square tube rotates one circle axially, triggering the telescopic part to contract, and at the same time, the movable ring plate drives the cross plate to move, so that the metal square tube passes the block and continues to move horizontally until it moves out of the stamping plate and falls along the discharge port.

[0014] The beneficial effects of the present invention are as follows: a conveying part and a steering part are provided on the other side of the workbench next to the stamping plate, the conveying part is used to convey the metal square tube toward the gap until the metal square tube passes through the gap and reaches the side end of the block, at which time the punching head is triggered to move down, and the bottom end of the punching head sequentially penetrates the top hole, the side hole and the punching groove to complete the punching action on one side of the metal square tube, and then the steering part is used to drive the metal square tube to rotate along its axial direction to complete the punching action on the remaining side of the metal square tube until the metal square tube rotates axially for one circle, triggering the telescopic part to contract, and at the same time, the movable ring plate is used to drive the cross plate to move, so that the metal square tube passes the block and continues to move horizontally until it moves horizontally out of the stamping plate and falls along the discharge port, thereby realizing automatic loading, positioning clamping and unloading, and automatically punching the four sides of the square tube in sequence, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or 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 in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure when the head end of the metal square pipe of the present invention abuts against the side end of the inner standing block; Figure 2 It is a structural schematic diagram of the steering part of the present invention; Figure 3 It is a schematic side view of the structure of the stamping plate of the present invention; Figure 4 It is a schematic side view of the structure when the metal square tube of the present invention is inserted into the stamping plate; Figure 5 It is a structural schematic diagram of the movable ring plate of the present invention when it rotates; Figure 6 It is a schematic diagram of the side view structure when the head end of the metal square pipe of the present invention abuts against the side end of the inner standing block; Figure 7 It is a structural schematic diagram of the metal square pipe fitting of the present invention when the head end thereof abuts against the side end of the inner standing block and rotates; Figure 8 It is a schematic diagram of the overall structure when the head end of the metal square pipe of the present invention abuts against the side end of the telescopic block; Fig. 9 It is a schematic diagram of the overall structure of the metal square pipe of the present invention when it continues to move forward beyond the telescopic block; Fig.10 It is a schematic diagram of the overall structure of the metal square tube fitting of the present invention when the material is being dropped from the discharge port.

[0017] The markings in the figure are: 1. Workbench; 2. Punching plate; 21. Top hole; 3. Punching head; 4. Metal square pipe; 5. Movable ring plate; 50. Push block; 51. Rectangular hole; 52. Side hole; 6. Horizontal plate; 61. Elastic member; 7. Stop block; 71. Inner block; 72. Outer block; 720. Telescopic block; 8. Telescopic part; 81. Limiting plate; 9. Discharge port; 10. Positioning block; 101. Punching slot; 102. Gap; 11. Conveying part; 12. Steering part; 121. Fixed ring frame; 122. Movable ring frame; 123. Roller; 124. Gear component; 13. First sensor. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figures 1 to 10 As shown, a stamping die for stamping metal parts comprises a stamping plate 2 fixedly arranged on a workbench 1, a stamping head 3 is arranged above the stamping plate 2, which is used to move downward to punch a metal square tube 4, the stamping plate 2 is vertically arranged on the workbench 1, a movable ring plate 5 is rotatably connected in the middle of the stamping plate 2, a rectangular hole 51 is opened in the middle of the movable ring plate 5, a top through-hole 21 is opened at the top of the stamping plate 2, a side through-hole 52 is opened at the side end of the movable ring plate 5, a cross plate 6 is connected to the stamping plate 2, and a stopper 7 is connected to the end of the cross plate 6 passing through the outside of the stamping plate 2, a telescopic part 8 is arranged on one side of the workbench 1 next to the stamping plate 2, a discharge port 9 is opened at a position between the stamping plate 2 and the telescopic part 8 on the workbench 1, a positioning block 10 is connected to the output end of the telescopic part 8, a punching slot 101 is opened on the side end of the positioning block 10, and the positioning block 10 is driven by the telescopic part 8 to extend into the rectangular shaped hole 51, and a gap 102 is left between the rectangular hole 51 for the metal square tube 4 to pass horizontally. A conveying part 11 and a steering part 12 are provided on the other side of the workbench 1 next to the stamping plate 2. The conveying part 11 is used to convey the metal square tube 4 toward the gap 102 until the metal square tube 4 passes through the gap 102 and reaches the side end of the stopper 7, triggering the punching head 3 to move downward. The bottom end of the punching head 3 successively penetrates the top hole 21, the side hole 52, and the punching groove 101 to complete the punching action on one side of the metal square tube 4. The steering part 12 is used to drive the metal square tube 4 to rotate along its axial direction to complete the punching action on the remaining side of the metal square tube 4 until the metal square tube 4 rotates axially for one circle, triggering the telescopic part 8 to contract, and at the same time driving the cross plate 6 to move through the movable ring plate 5, so that the metal square tube 4 passes over the stopper 7 and continues to move horizontally, and falls along the discharge port 9.

[0021] The present invention is provided with a punching plate 2 erected on a workbench 1, a punching head 3 is provided above the punching plate 2, and is used to move downward to punch a metal square pipe 4. In particular, a movable ring plate 5 is rotatably connected in the middle of the punching plate 2, a rectangular hole 51 is provided in the middle of the movable ring plate 5, a top penetration opening 21 is provided at the top of the punching plate 2, and a side penetration opening 52 is provided at the side end of the movable ring plate 5, and the side penetration opening 52 is located around the outer side of the movable ring plate 5. A cross plate 6 is connected to the punching plate 2, and a stopper 7 is connected to one end of the cross plate 6 passing through the outside of the punching plate 2. A telescopic portion 8 is provided on one side of the workbench 1 next to the punching plate 2. Specifically, the telescopic portion 8 can adopt existing conventional telescopic cylinders and other components. A discharge port 9 is provided between the stamping plate 2 and the telescopic portion 8, and a positioning block 10 is connected to the output end of the telescopic portion 8. A punching slot 101 is provided on the side end of the positioning block 10. The positioning block 10 is driven by the telescopic portion 8 to extend into the rectangular hole 51, and a gap 102 is left between the positioning block 10 and the rectangular hole 51 for the metal square tube 4 to pass through horizontally. The rectangular hole 51 and the positioning block 10 are both designed to be in a rectangular shape that matches the metal square tube 4, and the inner diameter of the rectangular hole 51 is slightly larger than the outer diameter of the metal square tube 4, and the inner diameter of the metal square tube 4 is slightly larger than the outer diameter of the positioning block 10. The end of the rectangular hole 51 facing the stamping plate 2 can be chamfered to facilitate insertion into the metal square tube 4 for positioning; A conveying portion 11 and a turning portion 12 are provided on the other side of the workbench 1 next to the stamping plate 2. The conveying portion 11 is used to convey the metal square pipe 4 toward the gap 102 until the metal square pipe 4 passes through the gap 102 and reaches the side end of the stopper 7. Figure 1 , Figure 4 , Figure 6 As shown, at this time, the punching head 3 is triggered to move downward, and the bottom end of the punching head 3 passes through the top hole 21, the side hole 52, and the punching groove 101 in sequence to complete the punching action on one side of the metal square tube 4, and then the steering part 12 is used to drive the metal square tube 4 to rotate along its axial direction to complete the punching action on the remaining side of the metal square tube 4 until the metal square tube 4 rotates axially for one circle, triggering the telescopic part 8 to contract, and at the same time, the movable ring plate 5 drives the cross plate 6 to move, so that the metal square tube 4 passes the block 7 and continues to move horizontally until it moves horizontally out of the punching plate 2 and falls along the discharge port 9, thereby realizing automatic loading, positioning clamping and unloading, and automatically punching the four sides of the square tube in sequence, which is easy to operate.

[0022] In an embodiment of the present invention, Figure 1 , Figure 2As shown, the steering part 12 includes a fixed ring frame 121 fixed on the workbench 1, and a movable ring frame 122 is rotatably connected in the fixed ring frame 121, and a roller 123 is connected in the movable ring frame 122. Specifically, the workbench 1 can also be provided with existing conventional rotating cylinders and other equipment to drive the gear component 124 to rotate. Part of the gear component 124 extends into the fixed ring frame 121 and is meshed with the movable ring frame 122 to drive the movable ring frame 122 to turn. When the metal square tube 4 moves laterally along the movable ring frame 122, the rollers 123 abut against the opposite sides of the metal square tube 4, so that on the one hand, when the metal square tube 4 moves laterally along the movable ring frame 122, the rollers 123 synchronously guide the rolling, and on the other hand, the metal square tube 4 is clamped and positioned by the rollers 123, so that the metal square tube 4 rotates axially synchronously with the movable ring frame 122.

[0023] In an embodiment of the present invention, Figure 1 , Figure 2 As shown, the conveying part 11 includes a transmission belt for directional conveying the metal square pipe 4 toward the movable ring frame 122. Optionally, a fixed roller 123 may be provided on the transmission belt, and the fixed rollers 123 are clamped and positioned on opposite sides of the metal square pipe 4, and the fixed rollers 123 are driven by a driving component such as a motor, thereby driving the metal square pipe 4 to be directional conveyed. Alternatively, the conveying part 11 is composed of a plurality of fixed ring frames 121, but the fixed rollers 123 in the fixed ring frames 121 no longer rotate, and only play the role of directional conveying of the metal square pipe 4. Even if the movable ring frame 122 drives the metal square pipe 4 to turn, it does not affect the directional conveying of the conveying part 11, that is, the metal square pipe 4 in the movable ring frame 122 turns while moving forward.

[0024] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the cross plate 6 passes through the top of the stamping plate 2 horizontally, and a plate through-hole is correspondingly opened on the cross plate 6 at the top through-hole 21. An elastic member 61 is connected between the top of the cross plate 6 and the inside of the stamping plate 2. The elastic member 61 can adopt an existing conventional spring or other elastic member to push the cross plate 6 downward. Since the cross plate 6 only moves up and down, its plate through-hole is always opposite to the top through-hole 21, which does not affect the punching operation. A push block 50 is connected to the outer end of the movable ring plate 5. Specifically, one side end face of the push block 50 is designed as an inclined end face, and the push block 50 is located at the front end or rear end of the side through-hole 52, that is, it does not affect the punching operation. The push block 50 rotates synchronously with the movable ring plate 5. When the metal square tube 4 drives the movable ring plate 5 to rotate axially for one circle, the inclined end face of the push block 50 pushes the cross plate 6 upward until the cross plate 6 is lifted upward and the elastic member 61 is compressed. The cross plate 6 drives the stopper 7 to move upward, so that the metal square tube 4 can pass the stopper 7 and continue to move horizontally.

[0025] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a first sensor 13 is provided on the side end of the stopper 7 facing the stamping plate 2, and a second sensor is provided at the bottom end of the stopper 7, wherein the first sensor 13 and the second sensor can adopt conventional pressure sensors, touch sensors, etc. The first sensor 13 is electrically connected to the stamping head 3, and the second sensor is electrically connected to the telescopic part 8. During operation, the metal square pipe 4 is continuously and directional transported forward by the transport part 11, and the telescopic part 8 drives the positioning block 10 to extend into the rectangular hole 51, and the metal square pipe 4 is penetrated along the gap 102 in the rectangular hole 51 until it abuts against the side end of the stopper 7, as shown in FIG. Figure 1 , Figure 4 , Figure 6 As shown, the forward movement stops, and the first sensor 13 is triggered at this time, which in turn triggers the punch head 3 to move down, and the bottom end of the punch head 3 passes through the top hole 21, the side hole 52, and the punching slot 101 in sequence, and the punch head 3 automatically lifts up and resets after punching, completing the punching action on one side of the metal square tube 4. After one punching action, the metal square tube 4 is driven by the steering part 12 to rotate 90° axially, and the movable ring plate 5 and the positioning block 10 are driven by the metal square tube 4 to rotate synchronously, so as to The side hole 52 and the punching groove 101 are facing upward and facing the top hole 21. At this time, the metal square tube 4 is still abutted by the stopper 7 and cannot move forward. After the metal square tube 4 rotates 90° to the right, the metal square tube 4 can again abut the first sensor 13 on the stopper 7, and then trigger a punching action again. After the four-side punching operation of the metal square tube 4 is repeated, when the metal square tube 4 rotates 90° for the third time, that is, when it returns to the punched position of the first side, as shown in FIG. Figure 5 As shown, the inclined end surface of the push block 50 pushes the cross plate 6 upward until the cross plate 6 is pushed upward. At this time, the metal square tube 4 is able to cross the stop block 7 and continue to move forward. The bottom end of the push block 50 abuts against the top of the metal square tube 4. At this time, the second sensor is triggered, triggering the telescopic part 8 to drive the positioning block 10 to retract until the metal square tube 4 moves forward out of the stamping plate 2 and falls along the discharge port 9. At this time, the metal square tube 4 at the rear end continues to move forward until it abuts against the side end of the stop block 7, triggering a new round of punching operation.

[0026] Among them, a limit plate 81 can also be provided on the telescopic part 8. When the telescopic part 8 drives the positioning block 10 to retract, the limit plate 81 is attached to the outer side of the positioning block 10 to prevent the metal square pipe 4 from being retracted together with the positioning block 10. A rotating joint can be connected to the output end of the telescopic part 8, that is, the positioning block 10 can rotate freely axially relative to the telescopic part 8.

[0027] In an embodiment of the present invention, Figures 1 to 10 As shown, the stopper 7 includes an inner block 71 close to one end of the stamping plate 2 and an outer block 72 away from one end of the stamping plate 2. The bottom end of the outer block 72 is elastically and telescopically connected to a telescopic block 720, that is, similar to the structure of an existing conventional elastic telescopic rod, the inner block 71 and the outer block 72 are at the same height, the first sensor 13 is located at the side ends of the inner block 71 and the telescopic block 720, and the second sensor is located at the elastic connection between the inner bottom end of the outer block 72 and the telescopic block 720. Preferably, the inner block 71 and the outer block 72 can also slide along the cross plate 6 to adjust different positions. If the metal square pipe 4 needs to be punched at its head and tail ends, the positions of the inner block 71 and the outer block 72 are adjusted. When the metal square pipe 4 moves forward to the side end of the inner block 71, as shown in FIG. Figure 1 , Figure 4 , Figure 6 As shown, the four-sided punching operation of the head end is triggered until the metal square tube 4 rotates axially for one circle, and the transmission cross plate 6 moves to allow the metal square tube 4 to pass over the inner stand block 71 and continue to move forward until the metal square tube 4 abuts against the side end of the telescopic block 720, as shown in FIG. Figure 8 As shown, the first sensor 13 is triggered again to perform the four-sided punching operation at the rear end. At this time, the head end of the metal square pipe 4 at the rear end is located in the punching plate 2, and drives the metal square pipe 4 at the front end to rotate and punch until the rear end of the metal square pipe 4 rotates axially for one circle, and the transmission cross plate 6 moves to allow the metal square pipe 4 to pass over the telescopic block 720 and continue to move forward, as shown in FIG. Fig. 9 As shown, at this time, the bottom end of the telescopic block 720 abuts against the top end of the metal square tube 4, thereby driving the cross plate 6 to move downward through the elastic member 61, and the telescopic block 720 elastically retracts upward into the outer block 72, and then the second sensor is triggered by pressure, which triggers the telescopic part 8 to contract. When the metal square tube 4 continues to move forward and out of the stamping plate 2, as shown in FIG. Fig.10 As shown, the material falls along the discharge port 9.

[0028] After sensing the material falling out of the discharge port 9 , the telescopic portion 8 drives the positioning block 10 to extend, so as to prepare for the subsequent punching operation of the metal square tube 4 .

[0029] Among them, one side end face of the telescopic block 720 is designed as an inclined end face. When the telescopic part 8 drives the positioning block 10 to move horizontally into the rectangular hole 51, the positioning block 10 abuts and pushes the inclined end face of the telescopic block 720 to retract the telescopic block 720 upward into the external block 72.

[0030] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 6 , Figure 7As shown, the stopper 7 is symmetrically connected to both sides of the bottom end of the horizontal plate 6 to avoid the punching holes on the metal square tube 4 and prevent the bottom end of the stopper 7 from sliding along the top end of the metal square tube 4 and falling into the punching holes of the metal square tube 4 and getting stuck.

[0031] The present invention also provides a stamping process for stamping a metal part, comprising the following steps: A conveying portion 11 and a turning portion 12 are provided on the other side of the workbench 1 next to the punching plate 2. The conveying portion 11 is used to convey the metal square tube 4 toward the gap 102 until the metal square tube 4 passes through the gap 102 and reaches the side end of the stopper 7. At this time, the punching head 3 is triggered to move downward to complete the punching action on one side of the metal square tube 4. The steering part 12 is then used to drive the metal square tube 4 to rotate along its axial direction to complete the punching action on the remaining side of the metal square tube 4, until the metal square tube 4 rotates axially for one circle, triggering the telescopic part 8 to contract, and at the same time, the movable ring plate 5 drives the cross plate 6 to move, so that the metal square tube 4 passes over the block 7 and continues to move horizontally until it moves horizontally out of the stamping plate 2 and falls along the discharge port 9, thereby realizing automatic loading, positioning clamping and unloading, and automatically punching the four sides of the square tube in sequence, which is easy to operate.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

Claims

1. A stamping die for stamping metal parts, comprising a stamping plate (2) fixedly arranged on a workbench (1), a stamping head (3) being arranged above the stamping plate (2) for moving downward to punch holes in a metal square tube (4), characterized in that: The punching plate (2) is erected on the workbench (1), and a movable ring plate (5) is rotatably connected in the middle of the punching plate (2), a rectangular hole (51) is opened in the middle of the movable ring plate (5), a top through-hole (21) is opened at the top of the punching plate (2), and a side through-hole (52) is opened at the side end of the movable ring plate (5), and a transverse plate (6) is connected to the punching plate (2), and a stopper (7) is connected to one end of the transverse plate (6) that passes through the outside of the punching plate (2); A telescopic portion (8) is provided on one side of the workbench (1) next to the punching plate (2); a discharge port (9) is provided on the workbench (1) at a position between the punching plate (2) and the telescopic portion (8); a positioning block (10) is connected to the output end of the telescopic portion (8); a punching slot (101) is provided on the side end of the positioning block (10); the positioning block (10) is driven by the telescopic portion (8) to extend into the rectangular hole (51); and a gap (102) is left between the positioning block (10) and the rectangular hole (51) for the metal square pipe (4) to pass through horizontally; a conveying portion (11) and a turning portion (12) are provided on the other side of the workbench (1) next to the punching plate (2); the conveying portion (11) is used to convey the metal into the gap (102); The metal square tube (4) is pressed against the side end of the stopper (7) until the metal square tube (4) passes through the gap (102) and abuts against the side end of the stopper (7), triggering the punch head (3) to move downward, and the bottom end of the punch head (3) sequentially passes through the top hole (21), the side hole (52), and the punching groove (101), completing the punching action on one side of the metal square tube (4). The steering portion (12) is used to drive the metal square tube (4) to rotate along its axial direction, completing the punching action on the remaining side of the metal square tube (4), until the metal square tube (4) rotates axially for one circle, triggering the telescopic portion (8) to contract, and at the same time driving the transverse plate (6) to move through the movable ring plate (5), so that the metal square tube (4) passes over the stopper (7) and continues to move transversely, and falls along the discharge port (9).

2. A stamping die for stamping metal parts according to claim 1, characterized in that: The steering part (12) comprises a fixed ring frame (121) fixed on the workbench (1), a movable ring frame (122) being rotatably connected inside the fixed ring frame (121), a roller (123) being connected inside the movable ring frame (122), and when the metal square tube (4) moves laterally inside the movable ring frame (122), the roller (123) abuts against opposite sides of the metal square tube (4), and the metal square tube (4) is driven to rotate synchronously through the axial rotation of the movable ring frame (122).

3. A stamping die for stamping metal parts according to claim 2, characterized in that: The conveying part (11) comprises a transmission belt, which is used to convey the metal square pipe (4) in a directional manner toward the inside of the movable ring frame (122).

4. A stamping die for stamping metal parts according to claim 1, characterized in that: The cross plate (6) passes through the top of the stamping plate (2) transversely, and a plate hole is opened on the cross plate (6) at the top hole (21) correspondingly. An elastic member (61) is connected between the top of the cross plate (6) and the inside of the stamping plate (2) for pushing the cross plate (6) downward. A push block (50) is connected to the outer end of the movable ring plate (5). When the metal square tube (4) drives the movable ring plate (5) to rotate axially for one circle, the push block (50) pushes the cross plate (6) upward and compresses the elastic member (61) so that the metal square tube (4) passes over the stop block (7) and continues to move horizontally.

5. A stamping die for stamping metal parts according to claim 4, characterized in that: One side end face of the push block (50) is designed as an inclined end face. When the push block (50) rotates with the movable ring plate (5), the inclined end face of the push block (50) pushes the transverse plate (6) until the transverse plate (6) is pushed upward and the elastic member (61) is compressed.

6. A stamping die for stamping metal parts according to claim 1, characterized in that: A first sensor (13) is provided on the side end of the stopper (7) facing the punching plate (2). When the metal square tube (4) is turned upright so that the side hole (52) and the punching groove (101) face upward and directly face the top hole (21), the metal square tube (4) abuts against the first sensor (13), triggering the punching head (3) to complete a punching action.

7. A stamping die for stamping metal parts according to claim 6, characterized in that: A second sensor is provided at the bottom end of the stopper (7). When the metal square tube (4) rotates axially one circle, the movable ring plate (5) drives the transverse plate (6) to move, so that the metal square tube (4) passes over the stopper (7) and continues to move transversely. The bottom end of the stopper (7) abuts against the top end of the metal square tube (4), triggering the telescopic part (8) to contract.

8. A stamping die for stamping metal parts according to claim 7, characterized in that: The stopper (7) comprises an inner standing block (71) close to one end of the stamping plate (2) and an outer standing block (72) away from one end of the stamping plate (2); the bottom end of the outer standing block (72) is elastically and telescopically connected to a telescopic block (720); when the metal square tube (4) rotates axially for one circle, the movable ring plate (5) drives the transverse plate (6) to move, so that the metal square tube (4) passes over the inner standing block (71) and continues to move horizontally until it abuts against the side end of the telescopic block (720), thereby triggering a punching action on the tail end of the metal square tube (4); one side end face of the telescopic block (720) is designed as an inclined end face; when the telescopic portion (8) drives the positioning block (10) to move horizontally and penetrate into the rectangular hole (51), the positioning block (10) abuts against and pushes the inclined end face of the telescopic block (720), so that the telescopic block (720) retracts upward into the outer standing block (72).

9. A stamping die for stamping metal parts according to claim 1, characterized in that: The stoppers (7) are symmetrically connected to the two sides of the bottom end of the horizontal plate (6) and are used to avoid punching holes on the metal square tube (4).

10. A stamping process for stamping metal parts, wherein the stamping die for stamping metal parts according to any one of claims 1 to 9 is used for stamping, and the process is characterized in that: The following steps are involved: A conveying portion (11) and a turning portion (12) are provided on the other side of the workbench (1) next to the punching plate (2). The conveying portion (11) is used to convey the metal square tube (4) toward the gap (102) until the metal square tube (4) passes through the gap (102) and abuts against the side end of the stopper (7). At this time, the punching head (3) is triggered to move downward to complete the punching action on one side of the metal square tube (4). The steering part (12) is then used to drive the metal square tube (4) to rotate along its axial direction to complete the punching action on the remaining side of the metal square tube (4), until the metal square tube (4) rotates axially one circle, triggering the telescopic part (8) to contract, and at the same time, the movable ring plate (5) drives the transverse plate (6) to move, so that the metal square tube (4) passes over the stopper (7) and continues to move horizontally until it moves horizontally out of the punching plate (2) and falls out along the discharge port (9).

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