High-speed round punch

Abstract

The invention discloses a high-speed round punch which comprises a mounting support, a connecting support is in sliding fit with the mounting support, a first driving motor is arranged on the mounting support, the first driving motor is connected with an eccentric device, the eccentric device is connected with a connecting rod, and the connecting rod is rotationally connected with the connecting support so as to drive the connecting support to reciprocate up and down. A connecting shaft is arranged on the connecting support, and the tail end of the connecting shaft is connected with a stamping knife. By means of the mode, high-speed and high-precision punching operation with rotary shearing force can be achieved, waste collection is automatically completed, and the punching efficiency, quality and cleanliness are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of punching technology for CNC cutting equipment, and in particular to a high-speed circular punch. Background Technology

[0002] In the field of flexible material processing, such as clothing, footwear, and bags, CNC cutting equipment typically needs to integrate punching functionality to meet processing requirements. Currently, most punching devices used in this field employ pneumatic drive, which uses the linear impact force generated by a cylinder to complete the punching action. For example, Chinese patent CN 220261254 U uses a drive component to move a connecting plate up and down, which in turn moves the machine body and punch up and down to perform punching. However, this type of pneumatic punching device has significant performance limitations: its punching speed is limited by the air source pressure and the cylinder reversing frequency, making it difficult to achieve high-speed continuous punching and resulting in low production efficiency; simultaneously, the punching pressure provided by the pneumatic method is limited, which can easily lead to problems such as incomplete punching, numerous burrs at the hole opening, and poor roundness when dealing with thicker or more tough materials, affecting processing quality and stability. Summary of the Invention

[0003] The main technical problem solved by this invention is to provide a high-speed circular punch that can achieve high-speed, high-precision punching operations with rotational shearing force, and automatically complete waste collection, significantly improving punching efficiency, quality and cleanliness.

[0004] To solve the above-mentioned technical problems, the present invention provides a high-speed circular punch, comprising: a mounting bracket, a connecting bracket slidably fitted on the mounting bracket, a first drive motor mounted on the mounting bracket, an eccentric device connected to the first drive motor, a connecting rod connected to the eccentric device, the connecting rod being rotatably connected to the connecting bracket, thereby driving the connecting bracket to reciprocate up and down, a connecting shaft mounted on the connecting bracket, and a punch connected to the end of the connecting shaft.

[0005] Preferably, the eccentric device includes a rotating column, an eccentric shaft, and a housing. The rotating column is connected to a first drive motor, thereby driving the rotating column to rotate. The eccentric shaft is located at a non-axial position at one end of the rotating column. The rotating column is rotatably connected inside the housing, which is mounted on a mounting bracket. A connecting rod is connected to the eccentric shaft.

[0006] Preferably, a first bearing is provided inside the housing and is sleeved on the rotating column; a second bearing is provided inside the rotating column and is sleeved on the eccentric shaft.

[0007] Preferably, the first drive motor is connected to a first driving wheel, one end of the rotating column is connected to a first driven wheel, and a first synchronous belt is fitted on the first driving wheel and the first driven wheel, so that the first drive motor drives the rotating column to rotate.

[0008] Preferably, a second drive motor is provided on the connecting bracket, the second drive motor is connected to a second driving wheel, a second driven wheel is connected to the connecting shaft, and a second synchronous belt is fitted on the second driving wheel and the second driven wheel, so that the second drive motor drives the punch to rotate.

[0009] Preferably, the connecting bracket is provided with an intermediate support block, one end of the connecting shaft passes through the intermediate support block, a bushing is fitted on the connecting shaft, the second driven wheel is connected to the bushing through the first pin, so that the second driven wheel drives the bushing to rotate, the connecting shaft is provided with an elongated hole, the bushing is provided with a second pin that passes through the elongated hole, so that the bushing is connected to the connecting shaft through the second pin, and the bushing drives the connecting shaft to rotate. A third bearing is installed on the intermediate support block. The third bearing is connected to the bushing to support the rotation of the connecting shaft.

[0010] Preferably, at least two connecting shafts are arranged, and each connecting shaft is connected to a corresponding second driven wheel and punch. The connecting shaft and the bushing slide together, and the second pin slides together with the long slotted hole. A drive component is provided on the connecting bracket. The drive component is rotatably connected to one end of the corresponding connecting shaft. A limit step seat is provided at the end of the connecting shaft near the drive component. A first spring is provided between the limit step seat and the second driven wheel. The first spring forces the connecting shaft to move toward the drive component. When the drive component moves, it controls the movement of the corresponding connecting shaft and the punch, thereby putting the punch in the working position or resetting it.

[0011] Preferably, a tensioning wheel is provided on the connecting bracket, and the tensioning wheel is located on the side of the second synchronous belt to adjust the tension of the second synchronous belt.

[0012] Preferably, the connecting bracket is connected to a waste collection block, the waste collection block has a waste collection cavity, a knife cap is slidably connected to the waste collection block, the knife cap is sleeved on the punch, the cavity inside the knife cap is connected to the waste collection cavity, the waste collection cavity is connected to a waste collection box through an air pipe, and the waste collection box is connected to an air source.

[0013] Preferably, the waste collection box has an air inlet that is connected to the inside of the waste collection box, an air pipe that is connected to the inside of the waste collection box, and an air outlet that is covered with a sponge.

[0014] The beneficial effects of this invention are as follows: The first drive motor, in conjunction with an eccentric device and a linkage mechanism, drives the connecting bracket and the punch to achieve high-speed, stable reciprocating motion. Compared to traditional pneumatic punching methods, this results in greater force and more precise stroke control, significantly improving punching speed and pressure, and enabling efficient penetration of thicker or more tough materials. Simultaneously, the second drive motor continuously rotates the punch, creating a rotary shearing effect that makes the punched hole walls smoother and burr-free, greatly improving punching quality and adaptability to multi-layered materials. Furthermore, the integrated air-driven waste collection system automatically adsorbs and collects waste generated during punching, preventing interference with the processing and ensuring continuous and clean production. The overall structure is rationally designed, each punch can be independently controlled, and operation is stable and reliable, making it suitable for high-speed automated production scenarios. This comprehensively achieves high-speed, high-quality, and high-efficiency punching processing. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the entire invention from a frontal view; Figure 2 This is a structural schematic diagram of the entire invention from the rear view. Figure 3 This is a schematic diagram of the eccentric device of the present invention; Figure 4 This is a schematic diagram of the connecting shaft of the present invention.

[0016] The components in the attached diagram are labeled as follows: 1. Mounting bracket; 11. First drive motor; 12. First driving pulley; 13. First driven pulley; 14. First timing belt; 2. Connecting bracket; 21. Second drive motor; 23. Drive component; 24. Tensioner wheel; 25. Fourth bearing; 26. Limit cover; 27. Second drive wheel; 31. Rotating column; 32. Eccentric shaft; 33. Housing; 34. First bearing; 35. Counterweight; 4. Connecting rod; 5. Connecting shaft; 51. Second driven wheel; 52. First pin; 53. Bushing; 54. Long slotted hole; 55. Second pin; 56. Limiting step seat; 57. First spring; 58. Second synchronous belt; 6. Intermediate support block; 61. Third bearing; 7. Waste collection block; 71. Waste collection cavity; 72. Knife cap; 8. Waste collection box; 81. Air inlet; 82. Sponge; 9. Punch. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0024] Example: refer to Figures 1-4 A high-speed circular punch includes: a mounting bracket 1, a connecting bracket 2 slidably fitted on the mounting bracket 1, a first drive motor 11 mounted on the mounting bracket 1, an eccentric device connected to the first drive motor 11, and a connecting rod 4 connected to the eccentric device. The connecting rod 4 is rotatably connected to the connecting bracket 2, thereby forcing the connecting bracket 2 to slide up and down relative to the mounting bracket 1. Driven by the first drive motor 11, the eccentric device, and the connecting rod 4, the connecting bracket 2 reciprocates up and down. A connecting shaft 5 is provided on the connecting bracket 2, and a punch 9 is connected to the end of the connecting shaft 5. The punch 9 reciprocates up and down to punch holes in the material to be processed. Compared to pneumatic drive, the reciprocating motion of the punch 9 driven by the eccentric device generates greater force and is more stable, allowing for precise control of the up-and-down reciprocating stroke. Furthermore, the first drive motor 11 is a servo motor with higher torque, enabling better punching of multi-layered materials.

[0025] refer to Figure 2 and Figure 3 The eccentric device includes a rotating column 31, an eccentric shaft 32, and a housing 33. The rotating column 31 is connected to a first drive motor 11, which drives the rotating column 31 to rotate. The eccentric shaft 32 is positioned at a non-axial position at one end of the rotating column 31, achieving eccentric rotation and thus driving the connecting rod 4 to reciprocate up and down. The rotating column 31 is rotatably connected inside the housing 33, which is bolted to the mounting bracket 1. The connecting rod 4 is connected to the eccentric shaft 32. To ensure smoother rotation of the rotating column 31 and eccentric shaft 32, a first bearing 34 is installed inside the housing 33 and sleeved on the rotating column 31. A second bearing is installed inside the rotating column 31 and sleeved on the eccentric shaft 32. To extend service life and ensure smoother operation, a counterweight 35 can be installed at a suitable position on the rotating column 31.

[0026] refer to Figure 3 and Figure 4 The first drive motor 11 is connected to the first drive wheel 12, and one end of the rotating column 31 is connected to the first driven wheel 13. The first drive wheel 12 and the first driven wheel 13 are fitted with the first synchronous belt 14. Thus, the first drive motor 11 drives the rotating column 31 to rotate, which in turn drives the eccentric shaft 32 to rotate, which in turn drives the connecting rod 4 to move up and down, which in turn drives the connecting bracket 2 to move up and down reciprocally, so that the punch 9 moves up and down reciprocally to punch the material.

[0027] refer to Figure 1 and Figure 4 To improve punching efficiency, make the punched holes rounder, reduce burrs, and increase punching thickness, a second drive motor 21 is bolted to the connecting bracket 2. The second drive motor 21 can be a servo motor. The second drive motor 21 is connected to a second drive wheel 27, and a second driven wheel 51 is connected to the connecting shaft 5. A second synchronous belt 58 is fitted onto the second drive wheel 27 and the second driven wheel 51. Thus, the second drive motor 21 drives the second driven wheel 51 to rotate through the second synchronous belt 58, which in turn drives the connecting shaft 5 to rotate, thereby driving the punch 9 to rotate.

[0028] refer to Figures 1-4 A middle support block 6 is bolted to the connecting bracket 2. One end of the connecting shaft 5, connected to the punch 9, passes through the middle support block 6. A bushing 53 is fitted onto the connecting shaft 5. A second driven wheel 51 is connected to the bushing 53 via a first pin 52, thereby causing the bushing 53 to rotate. An elongated hole 54 is provided on the connecting shaft 5. A second pin 55 is provided on the bushing 53, which passes through the elongated hole 54, thereby connecting the bushing 53 to the connecting shaft 5 via the second pin 55, and causing the bushing 53 to rotate. To better support the rotation of the connecting shaft 5 and to make the punch 9 more stable in cutting materials, a third bearing 61 is installed on the middle support block 6. The third bearing 61 is connected to the bushing 53, thereby supporting the rotation of the connecting shaft 5.

[0029] refer to Figure 1 and Figure 4At least two connecting shafts 5 are arranged, each connected to a corresponding second driven wheel 51 and punch 9. The connecting shaft 5 is slidably engaged with the bushing 53, and the second pin 55 is slidably engaged with the connecting shaft 5 through the elongated hole 54. A driving component 23 is bolted to the connecting bracket 2. The driving component 23 can be a cylinder. The driving component 23 is rotatably connected to one end of the corresponding connecting shaft 5. A limiting step seat 56 is installed at the end of the connecting shaft 5 near the driving component 23. A first spring 57 is provided between the limiting step seat 56 and the second driven wheel 51. The first spring 57 is sleeved on the connecting shaft 5, so that the first spring 57 forces the connecting shaft 5 to move toward the driving component 23. Thus, when the driving component 23 is activated, it can control the movement of the corresponding connecting shaft 5 and punch 9, thereby putting the punch 9 into the working position or resetting it. The drive component 23 and the connecting shaft 5 can be connected by a fourth bearing 25. Specifically, a limiting cover 26 can be installed on the piston rod of the drive component 23. The outer ring of the fourth bearing 25 is restricted in its circumferential position by the limiting cover 26, and the inner ring of the fourth bearing 25 is connected to the connecting shaft 5, so as not to interfere with the rotation of the connecting shaft 5.

[0030] refer to Figure 1 A tensioning wheel 24 is installed on the connecting bracket 2. The tensioning wheel 24 is arranged on the side of the second synchronous belt 58 and is used to adjust the tension of the second synchronous belt 58, thereby preventing the second synchronous belt 58 from slipping with the second driving pulley 27 and the second driven pulley 51. In order to support the position of the tensioning wheel 24, a support block can be threaded to the upper end of the intermediate support block 6, and the tensioning wheel 24 is rotatably connected to the support block.

[0031] refer to Figure 1 and Figure 4 In order to collect the waste generated when the punch 9 cuts the material and avoid affecting the punching of the material, the connecting bracket 2 is bolted with a waste collection block 7. The waste collection block 7 is located below the middle support block 6. Of course, the waste collection block 7 can also be flush with the lower end face of the middle support block 6 and bolted together. The waste collection block 7 has a waste collection cavity 71. A knife cap 72 is slidably connected to the waste collection block 7. The knife cap 72 is sleeved on the punch 9. The cavity inside the knife cap 72 is connected to the waste collection cavity 71. The waste collection cavity 71 is connected to a waste collection box 8 through an air pipe. The waste collection box 8 is connected to an air source. Thus, the waste that is instantly cut off by the punch 9 is sucked into the cavity in the knife cap 72 and enters the waste collection cavity 71, and is finally sucked into the waste collection box 8.

[0032] refer to Figure 1The waste collection box 8 has an air inlet 81 that connects to the interior of the waste collection box 8. An air pipe also connects to the interior of the waste collection box 8. The waste collection box 8 has an air outlet covered by a sponge 82. Compressed gas enters the waste collection box 8 through the air inlet 81, creating a siphon effect at the waste collection chamber 71 connected to the air pipe, thereby drawing in the waste material from the waste collection chamber 71. The sponge 82 allows the gas inside the waste collection box 8 to flow out while also reducing the noise generated by the airflow.

[0033] Operation process: The first drive motor 11 operates, driving the eccentric shaft 32 to rotate via the first synchronous belt 14. This, in turn, causes the punch 9 to reciprocate up and down via the connecting rod 4. When only one punch 9 is needed for punching, the corresponding drive component 23 activates, pressing down the connecting shaft 5. This causes only the pressed punch 9 to reach the working position and perform punching. If necessary, both punches 9 can be pressed down simultaneously for punching. Waste generated during punching is collected in the waste collection box 8.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A high-speed circular punch, characterized in that, include: Mounting bracket (1), on which a connecting bracket (2) is slidably fitted, a first drive motor (11) is provided on the mounting bracket (1), the first drive motor (11) is connected to an eccentric device, the eccentric device is connected to a connecting rod (4), the connecting rod (4) is rotatably connected to the connecting bracket (2), thereby driving the connecting bracket (2) to move up and down reciprocally, a connecting shaft (5) is provided on the connecting bracket (2), and a punch (9) is connected to the end of the connecting shaft (5).

2. The high-speed circular punch according to claim 1, characterized in that: The eccentric device includes a rotating column (31), an eccentric shaft (32), and a housing (33). The rotating column (31) is connected to a first drive motor (11), so that the first drive motor (11) drives the rotating column (31) to rotate. The eccentric shaft (32) is located at a non-axial position at one end of the rotating column (31). The rotating column (31) is rotatably connected inside the housing (33). The housing (33) is mounted on the mounting bracket (1). The connecting rod (4) is connected to the eccentric shaft (32).

3. A high-speed circular punch according to claim 2, characterized in that: A first bearing (34) is provided inside the housing (33), and the first bearing (34) is sleeved on the rotating column (31); A second bearing is provided inside the rotating column (31), and the second bearing is sleeved on the eccentric shaft (32).

4. A high-speed circular punch according to claim 2 or 3, characterized in that: The first drive motor (11) is connected to the first drive wheel (12), and one end of the rotating column (31) is connected to the first driven wheel (13). The first drive wheel (12) and the first driven wheel (13) are fitted with a first synchronous belt (14), so that the first drive motor (11) drives the rotating column (31) to rotate.

5. A high-speed circular punch according to claim 1, characterized in that: The connecting bracket (2) is provided with a second drive motor (21), the second drive motor (21) is connected to a second drive wheel (27), the connecting shaft (5) is connected to a second driven wheel (51), and a second synchronous belt (58) is sleeved on the second drive wheel (27) and the second driven wheel (51), so that the second drive motor (21) drives the punch (9) to rotate.

6. A high-speed circular punch according to claim 5, characterized in that: The connecting bracket (2) is provided with an intermediate support block (6), one end of the connecting shaft (5) passes through the intermediate support block (6), and a bushing (53) is sleeved on the connecting shaft (5). The second driven wheel (51) is connected to the bushing (53) through the first pin (52), so that the second driven wheel (51) drives the bushing (53) to rotate. The connecting shaft (5) is provided with an elongated hole (54), and the bushing (53) is provided with a second pin (55) that passes through the elongated hole (54), so that the bushing (53) is connected to the connecting shaft (5) through the second pin (55), and the bushing (53) drives the connecting shaft (5) to rotate. The intermediate support block (6) is provided with a third bearing (61), which is connected to the bushing (53) to support the rotation of the connecting shaft (5).

7. A high-speed circular punch according to claim 6, characterized in that: At least two connecting shafts (5) are arranged, and each connecting shaft (5) is connected to a corresponding second driven wheel (51) and punch (9); The connecting shaft (5) is slidably engaged with the bushing (53), and the second pin (55) is slidably engaged with the elongated hole (54); The connecting bracket (2) is provided with a driving member (23), which is rotatably connected to one end of the corresponding connecting shaft (5). The end of the connecting shaft (5) near the driving member (23) is provided with a limiting step seat (56). A first spring (57) is provided between the limiting step seat (56) and the second driven wheel (51). The first spring (57) forces the connecting shaft (5) to move toward the driving member (23). When the driving member (23) moves, it controls the movement of the corresponding connecting shaft (5) and the punch (9), thereby putting the punch (9) in the working position or resetting it.

8. A high-speed circular punch according to claim 5, characterized in that: The connecting bracket (2) is provided with a tension wheel (24), which is located on the side of the second synchronous belt (58) and is used to adjust the tension of the second synchronous belt (58).

9. A high-speed circular punch according to claim 1, characterized in that: The connecting bracket (2) is connected to a waste collection block (7), and a waste collection cavity (71) is opened in the waste collection block (7). A knife cap (72) is slidably connected on the waste collection block (7). The knife cap (72) is sleeved on the punch (9). The cavity inside the knife cap (72) is connected to the waste collection cavity (71). The waste collection cavity (71) is connected to a waste collection box (8) through an air pipe. The waste collection box (8) is connected to an air source.

10. A high-speed circular punch according to claim 9, characterized in that: The waste collection box (8) is provided with an air inlet (81), which is connected to the inside of the waste collection box (8). The air pipe is connected to the inside of the waste collection box (8). The waste collection box (8) is provided with an air outlet, which is covered with a sponge (82).

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