Punching and bending all-in-one machine for strap end forming

Abstract

The utility model relates to the field of material forming, in particular to a punching and bending all-in-one machine for forming a strap end, which comprises a bottom plate, a bending column and a punching device, the bending column is rotatably connected onto the bottom plate and connected with the punching device, the punching device comprises a punch, a feeding hole for inserting a strip material is arranged on the bending column, and the feeding hole is communicated with the punch. The bending column is further provided with a passing groove allowing the punch to pass downwards and a blanking groove allowing waste to be discharged, and the passing groove and the blanking groove are perpendicular to the feeding hole. Rotation of the bending column is linked with vertical movement of the punch, when the bending column rotates upwards to the limit, the punch is exactly perpendicular to the feeding hole, punching and bending of strip materials can be completed on the same device at a time through linkage of rotation of the bending column and movement of the punch, production efficiency is improved, and die development cost and time are saved.

Description

Technical Field

[0001] The utility model relates to the field of material forming, in particular to a punching and bending integrated machine for forming a band end. Background Art

[0002] The gas reservoir band assembly consists of a band and an L-shaped band reinforcement plate. The conventional manufacturing process involves punching and bending the band strip, then welding the L-shaped band reinforcement plate to the corresponding position of the formed band end. This is then rounded to form the gas reservoir band assembly that meets product requirements. This means that the production efficiency of the gas reservoir band assembly is low. During mass production, it is necessary to develop corresponding punching and bending dies for specific gas reservoir band assembly models. Not only is the mold development cost high and the development cycle long, but the developed molds are also difficult to adapt to the production of other gas reservoir band assembly models. Utility Model Content

[0003] The technical problem that the present application aims to solve is to provide a punching and bending machine for forming the end of a hoop. Through the linkage of the rotation of the bending column and the movement of the punch, the punching and bending of the strip material can be completed at one time on the same device, which not only improves the production efficiency but also saves the cost and time of mold development.

[0004] The present application adopts the following technical solution: a punching and bending machine for forming the end of a hoop, comprising a base plate, a bending column and a punching device, the bending column being rotatably connected to the base plate, the bending column being connected to the punching device, the punching device comprising a punch, a feed hole for inserting strip material is provided on the bending column, the bending column is also provided with a passing groove for the punch to pass downward and a blanking groove for discharging waste material, the passing groove and the blanking groove are perpendicular to the feed hole; the rotation of the bending column is linked to the up and down movement of the punch, and when the bending column rotates upward to the limit, the punch is exactly perpendicular to the feed hole.

[0005] Preferably, the feed hole extends toward the rotation axis of the bending column, and the length of the through slot is equal to the diameter of the bending column.

[0006] Preferably, the feed hole passes through the bending column.

[0007] Preferably, the feed opening of the feed hole is further provided with a formed fillet, and the diameter of the formed fillet is the same as the diameter of the fillet at the bending portion of the hoop.

[0008] Preferably, a handle is also included, which is fixed on the bending column to drive the bending column to rotate.

[0009] Further preferably, the angle between the feed hole and the handle is 135°.

[0010] Furthermore, the punching device is a hydraulic punching device, including a motor, a hydraulic pump, a hydraulic cylinder, an oil cylinder, a reversing valve and a punch fixing platform. The motor is connected to the hydraulic pump, and the hydraulic pump is respectively connected to the oil cylinder and the reversing valve through oil circuits. The oil cylinder is connected to the reversing valve through an oil circuit. The hydraulic cylinder is divided into an upper hydraulic chamber and a lower hydraulic chamber by the punch fixing platform, and the punch fixing platform is slidingly connected to the inner wall of the hydraulic cylinder; a first oil circuit and a second oil circuit are respectively provided at the front and rear ends of the reversing valve, the first oil circuit is connected to the upper hydraulic chamber, and the second oil circuit is connected to the lower hydraulic chamber; the reversing valve also includes a guide rod, which is connected to the bending column.

[0011] Further preferably, a third oil circuit is further provided between the reversing valve and the oil cylinder, and a relief valve is provided on the third oil circuit.

[0012] Further preferably, it also includes a handle, which is fixed on the bending column to drive the bending column to rotate, and a start button connected to the motor is provided at the end of the handle.

[0013] Preferably, it also includes a hoop reinforcement plate, one end of the hoop reinforcement plate is opened, the hole diameter is adapted to the punch diameter, and the open end of the hoop reinforcement plate is fixed to the strip material.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention include:

[0015] The present application realizes the linkage between the rotation of the bending column and the movement of the punch. The bending column rotates upward and the punch moves downward into the slot. When the rotation reaches the limit, the punch is perpendicular to the strip in the feed hole and the punching is completed. The bending column rotates in the opposite direction and the punch is reset. After the strip contacts the bottom plate and is limited, the bending column continues to rotate. The stress of the strip at the feed port of the feed hole is concentrated, causing it to bend until the bending angle reaches the product requirements of the hoop. This achieves the one-time completion of the punching and bending of the strip on the same device, which not only improves production efficiency but also saves the cost and time of mold development. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the gas reservoir band assembly produced for this application;

[0017] Figure 2 This is a three-dimensional schematic diagram of the overall structure of this application;

[0018] Figure 3 This is a top view of the local structure of this application;

[0019] Figure 4 This is the main view of the local structure of this application;

[0020] Figure 5 This is a partial front view of the feed hole and the through slot for this application;

[0021] Figure 6 This is a partial top view of the feed hole and the through slot of this application;

[0022] Figure 7 This is a schematic diagram of the internal structure of the hydraulic cylinder of this application;

[0023] Figure 8 This is a schematic diagram of the initial state of the handle and strip material in Example 3 of the present application;

[0024] Figure 9 This is a schematic diagram of the punching state of the handle and strip material in Example 3 of the present application;

[0025] Figure 10 This is a schematic diagram of the bending state of the handle and the strip material in Example 3 of the present application;

[0026] Figure 11 This is a schematic diagram of the initial state of the hoop reinforcement plate and the strip material in Example 3 of the present application;

[0027] Figure 12 This is a schematic diagram of the stamping state of the hoop reinforcement plate and the strip material in Example 3 of the present application;

[0028] Figure 13 This is a schematic diagram of the bending state of the hoop reinforcement plate and the strip material in Example 3 of the present application;

[0029] In the figure: 1. Base plate; 2. Bending column; 201. Feed hole; 202. Passing slot; 203. Blanking chute; 204. Handle; 205. Start button; 206. Forming fillet; 207. Hoop reinforcement plate; 3. Punching device; 301. Punch; 302. Motor; 303. Hydraulic pump; 304. Cylinder; 305. Hydraulic cylinder; 3501. Upper hydraulic chamber; 3502. Lower hydraulic chamber; 306. Reversing valve; 307. First oil circuit; 308. Second oil circuit; 309. Guide rod; 3010. Third oil circuit; 3011. Overflow valve; 3012. Punch fixing platform; 100. Strip material. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0031] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but rather merely represents some embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] Please refer to the accompanying drawings, the embodiment provides a punch bending integrated machine for the end of the cuff forming, including the bottom plate 1, the bending column 2 and the punching device 3, the bending column 2 is rotatably connected on the bottom plate 1, the bending column 2 is connected with the punching device 3, the punching device 3 includes punch 301, the bending column 2 is provided with the feed hole 201 for the strip material 100 insertion, the bending column 2 is further provided with the through groove 202 for the punch 301 downward passing and the blanking groove 203 for the waste discharge, the through groove 202 and the blanking groove 203 are perpendicular to the feed hole 201;The bending column 2 is driven to rotate by the rotary motor or the air pressure or the hydraulic pressure, the rotation of the bending column 2 is linked with the up-down movement of the punch 301, when the bending column 2 rotates upward to the limit, the punch 301 is just perpendicular to the feed hole 201. Through the linkage of the rotation of the bending column 2 and the movement of the punch 301, the bending column 2 rotates upward, the punch 301 goes down into the through groove 202, until the rotation reaches the limit, the punch 301 is just perpendicular to the strip material 100 in the feed hole 201 and completes the punching, the bending column 2 rotates in the opposite direction, the punch 301 resets, after the strip material 100 is in contact with the bottom plate 1 and is limited, the bending column 2 continues to rotate, the strip material 100 is stressed in the feed hole 201 and is bent, until the bending angle reaches the product requirement of the cuff, so that the punching and bending of the strip material 100 are completed on the same device at one time, which not only improves the production efficiency, but also saves the mold development cost and time.

[0034] Preferably, the feed hole 201 extends towards the rotation axis direction of the bending column 2 or penetrates the bending column 2, and the length of the through groove 202 is equal to the diameter of the bending column 2. The rotation axis direction of the bending column 2 is the diameter direction of the bending column 2, the feed hole 201 has the largest hole depth range along the diameter, the strip material 100 can be inserted more length inwardly, so as to adapt to the bending position and punching position requirements of different models of cuff products, and the applicability and practicality of the application are improved. The length of the through groove 202 is equal to the diameter of the bending column 2, which is convenient for the machining of the bending column 2, and also widens the passing space for the downward process of the punch 301, so that the punching process is more stable.

[0035] Preferably, the feed hole 201 is further provided with a shaped fillet 206 at the feed port, and the diameter of the shaped fillet 206 is the same as that of the fillet at the bending position of the cuff. The shaped fillet 206 can be integrally formed with the bending column 2, or can be detachably fixed at the feed port. The material of the shaped fillet 206 is high-strength and high-wear-resistant alloy steel, and the surface of the fillet is smooth. The shaped fillet 206 is provided on one hand for the rapid insertion of the strip material 100, and on the other hand the same diameter as that of the fillet at the bending position of the cuff can ensure that the bent cuff meets the product requirements.

[0036] Furthermore, the punching device 3 is a hydraulic punching device, including a motor 302, a hydraulic pump 303, a hydraulic cylinder 305, an oil cylinder 304, a reversing valve 306 and a punch fixing platform 3012, the motor 302 is connected to the hydraulic pump 303, the hydraulic pump 303 is respectively connected to the oil cylinder 304 and the reversing valve 306 through an oil circuit, the oil cylinder 304 is connected to the reversing valve 306 through an oil circuit, the hydraulic cylinder 305 is divided into an upper hydraulic chamber 3501 and a lower hydraulic chamber 3502 by the punch fixing platform 3012, and the punch fixing platform 3012 is slidably connected to the inner wall of the hydraulic cylinder 305; a first oil circuit 307 and a second oil circuit 308 are respectively provided at the front and rear ends of the reversing valve 306, the first oil circuit 307 is connected to the upper hydraulic chamber 3501, and the second oil circuit 308 is connected to the lower hydraulic chamber 3502; the reversing valve 306 also includes a guide rod 309, which is connected to the bending column 2. The guide rod 309 is a hinge structure, one end of which is connected to the inside of the reversing valve 306 and the other end of which is connected to the surface of the bending column 2. Start the motor 302, and the motor 302 drives the hydraulic pump 303 to operate, and the hydraulic pressure inside the reversing valve 306 increases. When the bending column 2 rotates toward the reversing valve 306, the guide rod 309 is pushed to move into the reversing valve 306, and the first oil circuit 307 is connected, so that the hydraulic pressure of the upper hydraulic chamber 3501 increases. The hydraulic pressure of the upper hydraulic chamber 3501 is higher than that of the lower hydraulic chamber 3502, pushing the punch fixing platform 3012 downward, thereby the punch 301 downward, until the bending column 2 rotates to the limit limit; when the bending column 2 rotates in the opposite direction, the guide rod 309 is pulled outward, and the second oil circuit 308 is connected, so that the hydraulic pressure of the lower hydraulic chamber 3502 increases. The hydraulic pressure of the upper hydraulic chamber 3501 is lower than that of the lower hydraulic chamber 3502, pushing the punch fixing platform 3012 upward, thereby the punch 301 upward, until the punch 301 is limited.

[0037] The punching device 3 of this embodiment may also be driven by a cam or air pressure.

[0038] Further preferably, a third oil circuit 3010 is further provided between the reversing valve 306 and the oil cylinder 304, and a relief valve 3011 is provided on the third oil circuit 3010. The third oil circuit 3010 is a safety oil circuit, and the relief valve 3011 is provided to prevent accidents caused by excessive hydraulic pressure when the punching and bending machine is stationary for a long time.

[0039] The working principle of this embodiment is as follows: the strip 100 is inserted into the feed hole 201 to an appropriate distance, the bending column 2 rotates upward, and the punch 301 descends until the bending column 2 rotates to the limit position, the punch 301 is perpendicular to the strip 100 in the feed hole 201, and the punching is completed; then the bending column 2 rotates in the opposite direction, the punch 301 ascends until it reaches the limit position, the strip 100 contacts the bottom plate 1 and stops, the bending column 2 continues to rotate, and the formed fillet 206 squeezes the strip 100, causing it to bend, until the fillet of the strip 100 is aligned with the formed fillet 206. The formed band is then welded to the band reinforcement plate 207, and the air reservoir band assembly is completed.

[0040] Example 2

[0041] The remaining structure of this embodiment is the same as that of Example 1, except that a handle 204 is used to drive the rotation of the bending column 2. The handle 204 is fixed to the bending column 2, and a start button 205 connected to the motor 302 is provided at the end of the handle 204. The use of the handle 204 facilitates the subjective judgment of the punching and bending process by the technician, eliminates the tedious circuit control process, and reduces the manufacturing cost of the equipment.

[0042] More preferably, the angle between the feed hole 201 and the handle 204 is 135°. Initially, the handle 204 is perpendicular to the base plate 1. After the strip 100 is inserted into the feed hole 201, the handle 204 is rotated 45° toward the reversing valve 306 until it reaches the limit position, and the strip 100 in the feed hole 201 is perpendicular to the punch 301.

[0043] The working principle of this embodiment is as follows: the strip 100 is inserted into the feed hole 201 to the appropriate distance, the button on the handle 204 is pressed, the motor 302 is started, the handle 204 is pushed forward, the bending column 2 rotates upward, and the punch 301 moves downward until the bending column 2 rotates to the limit position, the punch 301 is exactly perpendicular to the strip 100 in the feed hole 201, and the punching is completed; then the handle 204 is pulled back, the bending column 2 rotates in the opposite direction, the punch 301 moves upward until it reaches the limit position, the strip 100 contacts the bottom plate 1 and stops, the bending column 2 continues to rotate, the formed fillet 206 squeezes the strip 100, and the strip 100 bends until the fillet of the bend of the strip 100 is aligned with the formed fillet 206. The formed band is then welded to the band reinforcement plate 207, and the gas reservoir band assembly is completed.

[0044] Example 3

[0045] This embodiment has the same structure as embodiment 2, except that the circular molded hole is eliminated and the width of the feed hole 201 is larger. The hoop reinforcement plate 207 of this embodiment has a hole at one end of the reinforcement plate, the hole diameter of which is adapted to the diameter of the punch 301. The hole end of the hoop reinforcement plate 207 is welded to the strip 100.

[0046] The working principle of this embodiment is as follows: the welded end of the strip 100 welded to the band reinforcement plate 207 is inserted into the feed hole 201, the handle 204 button is pressed, the motor 302 is started, the handle 204 is pushed forward, the bending column 2 rotates upward, and the punch 301 moves downward until the bending column 2 rotates to the limit position, the punch 301 is exactly perpendicular to the strip 100 in the feed hole 201, and the punching is completed; then the handle 204 is pulled back, the bending column 2 rotates in the opposite direction, the punch 301 moves upward until it reaches the limit position, the strip 100 contacts the bottom plate 1 and stops, the bending column 2 continues to rotate, the formed fillet 206 squeezes the strip 100, and the strip 100 is bent until the fillet of the bend of the strip 100 is consistent with the formed fillet 206. The other end of the formed band is welded to the band reinforcement plate 207, and the gas reservoir band assembly is completed.

[0047] 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 protection of the present application is limited to these examples. In line with the present application, 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 different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0048] The one or more embodiments of this application are intended to encompass all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this application should be included in the scope of protection of this application.

Claims

1. A punching and bending machine for forming the end of a band, characterized in that: The invention comprises a base plate (1), a bending column (2) and a punching device (3), wherein the bending column (2) is rotatably connected to the base plate (1), the bending column (2) is connected to the punching device (3), the punching device (3) comprises a punch (301), a feeding hole (201) for inserting a strip material (100) is provided on the bending column (2), and the bending column (2) is further provided with a passing groove (202) for the punch (301) to pass downward and a blanking groove (203) for discharging waste material, wherein the passing groove (202) and the blanking groove (203) are perpendicular to the feeding hole (201); the rotation of the bending column (2) is linked to the up and down movement of the punch (301), and when the bending column (2) rotates upward to the limit, the punch (301) is exactly perpendicular to the feeding hole (201).

2. The punching and bending machine according to claim 1, characterized in that: The feed hole (201) extends in the direction of the rotation axis of the bending column (2), and the length of the through slot (202) is equal to the diameter of the bending column (2).

3. The punching and bending machine according to claim 2, characterized in that: The feed hole (201) passes through the bending column (2).

4. The punching and bending machine according to claim 1, characterized in that: The feed opening of the feed hole (201) is further provided with a formed fillet (206), and the diameter of the formed fillet (206) is the same as the diameter of the fillet at the bending portion of the hoop.

5. The punching and bending machine according to claim 1, characterized in that: It also includes a handle (204), which is fixed on the bending column (2) to drive the bending column (2) to rotate.

6. The punching and bending machine according to claim 5, characterized in that: The angle between the feed hole (201) and the handle (204) is 135°.

7. The punching and bending machine according to claim 1, characterized in that: The punching device (3) is a hydraulic punching device, comprising a motor (302), a hydraulic pump (303), a hydraulic cylinder (305), an oil cylinder (304), a reversing valve (306), and a punch fixing platform (3012); the motor (302) is connected to the hydraulic pump (303); the hydraulic pump (303) is connected to the oil cylinder (304) and the reversing valve (306) via oil circuits; the oil cylinder (304) is connected to the reversing valve (306) via an oil circuit; the interior of the hydraulic cylinder (305) is divided into an upper hydraulic chamber (3501) and a lower hydraulic chamber (3502) by the punch fixing platform (3012); and the punch fixing platform (3012) is slidably connected to the inner wall of the hydraulic cylinder (305); A first oil circuit (307) and a second oil circuit (308) are respectively provided at the front and rear ends of the reversing valve (306). The first oil circuit (307) is connected to the upper hydraulic chamber (3501), and the second oil circuit (308) is connected to the lower hydraulic chamber (3502). The reversing valve (306) further includes a guide rod (309), which is connected to the bending column (2).

8. The punching and bending machine according to claim 7, characterized in that: A third oil circuit (3010) is further provided between the reversing valve (306) and the oil cylinder (304), and a relief valve (3011) is provided on the third oil circuit (3010).

9. The punching and bending machine according to claim 7, characterized in that: It also includes a handle (204), which is fixed on the bending column (2) to drive the bending column (2) to rotate, and a start button (205) connected to the motor (302) is provided at the end of the handle (204).

10. The punching and bending machine according to claim 1, characterized in that: It also includes a hoop reinforcement plate (207), one end of which is opened with a hole, the hole diameter of which is adapted to the diameter of the punch (301), and the open end of the hoop reinforcement plate (207) is fixed to the strip material (100).

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