Punch for punching bracket main body of clothes hanger and punching device

Abstract

The utility model provides a punch for punching a bracket main body of a clothes hanger and a punching device, which are used for punching assembling parts of the bracket main body of the clothes hanger fixed on a lower die of the punching device, and the bracket main body of the clothes hanger is of a long-strip-shaped U-shaped structure and comprises the assembling parts which are oppositely arranged, the punch comprises two assembling parts and a connecting part vertically connected with the two assembling parts, ribs extending in the length direction of the assembling parts are arranged on the inner sides of the assembling parts, the punching direction of the punch is perpendicular to the assembling parts, and the punch comprises an assembling structure arranged on the top of the punch and used for being installed with an upper die of a punching device in a matched mode; and the stamping surface is arranged at the bottom of the base and is obliquely arranged. According to the punch used for punching the bracket body of the clothes hanger, the punching face at the bottom of the punch is arranged to be the inclined face, the shearing principle is applied to reduce rib punching pressure, the risk of punching and crushing powder is relieved, the yield of the bracket body is increased, cost is reduced, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of stamping dies, and in particular to a punch and stamping device for stamping the bracket body of a clothes rack. Background Technology

[0002] After the clothes drying rack bracket body is sprayed with electrostatic powder, its two ends need to be stamped to form a notch for assembly with the clothes drying rack rod assembly. Because there are protruding ribs on the inner side of the bracket body, conventional punches are prone to causing powder bursting at the ribs during stamping, leading to an increased product defect rate and increased production costs. Utility Model Content

[0003] The purpose of this application is to solve the above-mentioned problems by providing a punch for stamping the bracket body of a clothes rack, thereby solving the technical problem that the punch of the existing stamping device is prone to causing the powder layer of the bracket body to burst during stamping.

[0004] To achieve the above objectives, this application provides a punch for stamping the bracket body of a clothes rack, characterized in that it is used to stamp the assembly part of the clothes rack bracket body fixed on the lower die of a stamping device. The clothes rack bracket body is a long strip-shaped U-shaped structure, including opposing assembly parts and a connecting part perpendicularly connecting the two assembly parts. Ribs extending along the length direction of the assembly parts are provided on the inner side of each assembly part. The stamping direction of the punch is perpendicular to the assembly parts. The punch includes:

[0005] An assembly structure located at its top for mounting in conjunction with the upper die of the stamping device;

[0006] A stamping surface is provided at its bottom, and the stamping surface is inclined.

[0007] Compared with the prior art, the punch of the bracket body of the present invention for stamping clothes racks reduces the pressure of rib stamping by setting the stamping surface at the bottom of the punch as an inclined surface and applying the shearing principle, thereby mitigating the risk of stamping cracking powder, improving the yield of the bracket body, and reducing costs and increasing efficiency.

[0008] In one embodiment, one side of the projected surface of the stamping surface includes a first cutting segment for cutting to form a straight edge segment, a second cutting segment for cutting to form an arc edge segment, and a clearance segment for avoiding cutting with the connecting portion, arranged sequentially along the width direction of the punch. The first cutting segment is a straight segment extending along the width direction of the punch, and the thickness of the punch is uniform in the region of the first cutting segment. The second cutting segment is an arc segment tangent to the first cutting segment, and the thickness of the punch gradually decreases in the region of the second cutting segment and in the region of the clearance segment, with its maximum thickness being less than the minimum thickness of the punch in the region of the second cutting segment. The decreasing thickness of the punch in the first cutting segment, the second cutting segment, and the clearance segment reduces the overall contact area between the punch and the bracket body, thus reducing the probability of powder explosion.

[0009] In one embodiment, the avoidance segment is a straight segment, set at an obtuse angle to the first cutting segment, to facilitate avoidance of the connecting portion.

[0010] In one embodiment, the angle between the stamping surface and the stamping direction of the punch ranges from 85.0 degrees to 88.1 degrees.

[0011] In one embodiment, the angle between the stamping surface and the stamping direction of the punch is 87.0 degrees.

[0012] In one embodiment, the assembly structure includes a mounting hole located on the top of the punch, which facilitates disassembly and assembly with the upper die of the stamping device, thereby improving assembly efficiency.

[0013] In one embodiment, this application also provides a stamping device, including a working platform, a drive mechanism, an upper die, a lower die, and the aforementioned punch. The lower die is fixed on the working platform, the upper die is disposed opposite to the lower die above it, the punch assembly structure is fitted with the bottom of the upper die, and the drive mechanism drives the upper die to move closer to or away from the lower die.

[0014] In one embodiment, the number of punches is two, symmetrically arranged at both ends of the bottom of the upper die. This allows for simultaneous stamping of both ends of the bracket body, improving stamping efficiency.

[0015] In one embodiment, the stamping device further includes a stripper plate, which is elastically disposed at the bottom of the upper die. The stripper plate has a through hole through which the punch passes. The stripper plate can further press the bracket body, improving the stability and accuracy during stamping.

[0016] In one embodiment, the stripper plate is spring-loaded to the bottom of the upper mold. This simplifies the mold structure and facilitates maintenance and operation.

[0017] To better understand and implement this application, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a punch in one embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the bracket body in one embodiment of this application;

[0020] Figure 3 This is a structural schematic diagram of the bracket body from another perspective in one embodiment of this application;

[0021] Figure 4 This is a structural schematic diagram of the punch in one embodiment of this application from another perspective;

[0022] Figure 5 This is a schematic diagram of the projection surface in one embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the main body of the punching bracket in one embodiment of this application;

[0024] Figure 7 This is a structural schematic diagram of the punch in one embodiment of this application from another perspective;

[0025] Figure 8 This is a schematic diagram of the stamping device in one embodiment of this application.

[0026] Numbering on the map:

[0027] 1-Punch, 2-Bracket body, 3-Punching device, 11-Mounting hole, 12-Punching surface, 13-Projection surface, 21-Assembly part, 22-Connecting part, 23-Rib, 31-Working platform, 32-Upper die, 33-Lower die, 34-Locking part, 35-Stripping plate, 36-Spring, 131-First cutting section, 132-Second cutting section, 133-Avoidance section. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0029] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application.

[0030] It should also be noted that in the description of this application, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Please refer to 1 to Figure 3 This embodiment provides a punch 1 for stamping the bracket body of a clothes rack. It is used to stamp the assembly part 21 of the clothes rack bracket body 2 fixed on the lower die 33 of the stamping device 3. The clothes rack bracket body 2 is a long strip-shaped U-shaped structure, including the assembly parts 21 arranged opposite each other, and the connecting part 22 vertically connecting the two assembly parts 21. The inner side of the assembly part 21 is provided with a rib 23 extending along the length direction of the assembly part 21. The stamping direction of the punch 1 is perpendicular to the assembly part 21. The punch 1 includes: an assembly structure provided at its top for cooperating with the upper die 32 of the stamping device 3; and a stamping surface 12 provided at its bottom, the stamping surface 12 being inclined. Before stamping, the inner and outer surfaces of the bracket body 2 are powder-coated. The inclined stamping surface 12 can ensure that the force can be evenly and accurately transmitted to the assembly part 21 and ribs 23 of the bracket body 2 during the stamping process, reducing stress concentration during the stamping process, alleviating the risk of stamping cracking, improving the yield of the bracket body 2, and reducing costs and increasing efficiency.

[0032] Please refer to the following: Figure 4The assembly structure includes a mounting hole 11 located on the top of the punch 1, facilitating installation and disassembly with the upper die 32 of the stamping device 3, thus improving assembly efficiency. In another embodiment, the assembly structure may also be a snap-fit ​​or other fastening structure. The number of mounting holes 11 is one, located in the middle of the top of the punch 1, ensuring force balance during stamping and improving stamping accuracy. In another embodiment, the number of mounting holes 11 may be two, three, or other numbers, located in the middle or at both ends of the top of the punch 1, or at other positions. Preferably, the mounting hole 11 is an M8 threaded hole, which has a stronger load-bearing capacity and can maintain better stability and reliability. In another embodiment, the mounting hole 11 may also be an M6, M10, or other threaded hole.

[0033] Please refer to the following: Figure 5 and Figure 6 One side of the projection surface 13 of the stamping surface 12 includes a first cutting segment 131 for cutting to form a straight edge segment, a second cutting segment 132 for cutting to form an arc edge segment, and a clearance segment 133 for avoiding cutting with the connecting part 22, arranged sequentially along the width direction of the punch 1. The first cutting segment 131 is a straight segment extending along the width direction of the punch 1, and the thickness of the punch 1 in the area of ​​the first cutting segment 131 is uniform. The second cutting segment 132 is an arc segment tangent to the first cutting segment 131, and the thickness of the punch 1 in the area of ​​the second cutting segment 132 gradually decreases. The thickness of the punch 1 in the area of ​​the clearance segment 133 gradually decreases, and its maximum thickness is less than the minimum thickness of the punch 1 in the area of ​​the second cutting segment 132. The decreasing thickness of the punch 1 in the first cutting segment 131, the second cutting segment 132, and the clearance segment 133 can reduce the overall contact area between the punch 1 and the bracket body 2, reducing the probability of powder explosion.

[0034] The avoidance segment 133 is a straight segment, set at an obtuse angle to the first cutting segment 131, to facilitate avoidance of the connecting portion 22. The angle between the avoidance segment 133 and the first cutting segment 131 ranges from 142.0 degrees to 144.0 degrees. Preferably, the angle between the avoidance segment 133 and the first cutting segment 131 is 143.0 degrees. In another embodiment, the angle between the avoidance segment 133 and the first cutting segment 131 can also be 142.0 degrees or 144.0 degrees. The avoidance segment 133 and the first cutting segment 131 are connected by a rounded corner, which smooths the cut of the assembly portion 21, making it smoother and reducing the generation of burrs. In another embodiment, the avoidance segment 133 can also be an arc segment.

[0035] Please refer to the following: Figure 7The angle between the stamping surface 12 and the stamping direction of the punch 1 ranges from 85.0 degrees to 88.1 degrees. During stamping, the punch 1 stamps the two assembly parts 21 at the same end of the bracket body 2 sequentially. Since the distance between the two assembly parts 21 is fixed, under the same stamping area, the smaller the angle between the stamping surface 12 and the stamping direction of the punch 1, the longer the stroke required for the punch 1 to descend when stamping the first assembly part 21. This could potentially lead to interference between the punch 1 and the second assembly part 21 before the first assembly part 21 is stamped, affecting the normal operation of the punch 1. Therefore, under the premise of achieving the shearing principle, the angle between the stamping surface 12 and the stamping direction of the punch 1 should not be too small. Furthermore, within this included angle range, it helps ensure the dimensional stability of the bracket body 2 during the stamping process, reducing dimensional errors caused by angular deviations. It also helps to form a flat, vertical punched surface, reducing the generation of burrs and cracks, thereby improving the surface quality of the bracket body 2. Moreover, it helps to disperse stress during the stamping process, reducing the risk of the punch 1 chipping.

[0036] The angle between the stamping surface 12 and the stamping direction of the punch 1 is 87.0 degrees. At this angle, the shearing force exerted by the punch 1 is moderate, which helps the material of the bracket body 2 to flow more evenly during the stamping process, reducing deformation or cracks caused by uneven material flow, and ensuring that the bracket body 2 maintains high precision during the forming process, meeting design requirements. In another embodiment, the angle between the stamping surface 12 and the stamping direction of the punch 1 can also be 85.0 degrees or 88.1 degrees.

[0037] Please refer to the following: Figure 8 This application also provides a stamping device 3, including a working platform 31, a drive mechanism, an upper die 32, a lower die 33, and the aforementioned punch 1. The lower die 33 is fixed on the working platform 31, and the upper die 32 is disposed above the lower die 33. The assembly structure of the punch 1 is fitted with the bottom of the upper die 32. The drive mechanism drives the upper die 32 to move closer to or away from the lower die 33. The working platform 31 is horizontally positioned, and the upper die 32 moves vertically closer to or away from the lower die 33, so that the direction of gravity of the upper die 32 is in the same direction as the direction of movement, avoiding the deviation of its own movement trajectory due to gravity when tilted, which would lead to a decrease in stamping accuracy. The driving method of the drive device includes, but is not limited to, hydraulic drive, electric drive, and pneumatic drive, which can be selected according to the actual application scenario. The upper die 32 is provided with an assembly hole penetrating its thickness and also includes a locking member 34, which passes through the assembly hole and locks with the mounting hole 11 of the punch 1. Preferably, the locking element 34 is a locking screw, and the mounting hole 11 is a threaded hole.

[0038] The number of punches 1 is two, symmetrically arranged at both ends of the bottom of the upper die 32. This allows for simultaneous stamping of both ends of the bracket body 2, improving stamping efficiency. Furthermore, because the two punches 1 are symmetrically arranged, their force on the bracket body 2 is more uniform, helping to reduce deformation and dimensional errors in the bracket body 2, and improving the accuracy and consistency of the bracket body 2. In another embodiment, the number of punches 1 can also be four, six, or other numbers, allowing for the simultaneous stamping of multiple bracket bodies 2.

[0039] The stamping device 3 also includes a stripper plate 35, which is elastically disposed at the bottom of the upper die 32. The stripper plate 35 has a through hole through which the punch 1 passes. The stripper plate 35 can further press the bracket body 2, improving the stability and accuracy during stamping. The through hole of the stripper plate 35 guides the movement trajectory of the punch 1, improving the accuracy and stability of the punch 1 during stamping.

[0040] The stripper plate 35 is elastically mounted to the bottom of the upper mold 32 via springs 36. Connecting the stripper plate 35 and the upper mold 32 with the springs 36 absorbs the impacts and vibrations generated during operation, effectively protecting the components of the upper mold 32 from damage. Simultaneously, the springs 36 provide cushioning for the stripper plate 35, preventing excessive impact on the bracket body 2 during operation and protecting the surface quality of the bracket body 2. Preferably, two springs 36 are symmetrically arranged at both ends of the bottom of the upper mold 32. In other embodiments, the number of springs 36 can be three, four, or other quantities. In other embodiments, the springs 36 can be arranged in a linear array, a circular array, or other arrangements on the bottom of the upper mold 32.

[0041] The stamping process of the stamping device 3 is as follows: the bracket body 2 is pre-fixed on the lower die 33, the driving mechanism drives the upper die 32 to move vertically toward the lower die 33, the stripper plate 35 contacts the assembly part 21 of the bracket body 2, the stripper plate 35 continues to press down and elastically presses the bracket body 2, as the upper die 32 continues to work downward, the spring 36 is compressed into place, the punch 1 extends out from the through hole of the stripper plate 35, and the stamping surface 12 of the punch 1 begins to contact the bracket body 2 until the stamping is completed.

[0042] In summary, this application provides a punch and a punching device for stamping the bracket body of a clothes rack. By setting the stamping surface 12 at the bottom of the punch 1 as an inclined surface, the pressure of the ribs 23 is reduced by applying the shearing principle, thereby mitigating the risk of stamping cracking and improving the yield of the bracket body 2, thus reducing costs and increasing efficiency.

[0043] The specific examples described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A punch for stamping the bracket body of a clothes drying rack, characterized in that, It is used to stamp the assembly part of the clothes rack bracket body fixed on the lower die of the stamping device. The clothes rack bracket body is a long strip-shaped U-shaped structure, including oppositely arranged assembly parts and a connecting part that vertically connects the two assembly parts. The inner side of the assembly part is provided with a rib extending along the length direction of the assembly part. The stamping direction of the punch is perpendicular to the assembly part. The punch includes: An assembly structure located at its top for mounting in conjunction with the upper die of the stamping device; A stamping surface is provided at its bottom, and the stamping surface is inclined.

2. The punch for stamping the bracket body of a clothes drying rack according to claim 1, characterized in that: One side of the projected surface of the stamping surface includes a first cutting segment for cutting to form a straight edge segment, a second cutting segment for cutting to form an arc edge segment, and a clearance segment for avoiding cutting with the connecting part, arranged sequentially along the width direction of the punch. The first cutting segment is a straight segment extending along the width direction of the punch, and the thickness of the punch in the area of ​​the first cutting segment is uniform. The second cutting segment is an arc segment tangent to the first cutting segment, and the thickness of the punch in the area of ​​the second cutting segment gradually decreases. The thickness of the punch in the area of ​​the clearance segment gradually decreases, and its maximum thickness is less than the minimum thickness of the punch in the area of ​​the second cutting segment.

3. The punch for stamping the bracket body of a clothes drying rack according to claim 2, characterized in that: The avoidance section is a straight line segment, which is set at an obtuse angle to the first cutting section.

4. The punch for stamping the bracket body of a clothes drying rack according to claim 1, characterized in that: The angle between the stamping surface and the stamping direction of the punch ranges from 85.0 degrees to 88.1 degrees.

5. The punch for stamping the bracket body of a clothes drying rack according to claim 4, characterized in that: The angle between the stamping surface and the stamping direction of the punch is 87.0 degrees.

6. The punch for stamping the bracket body of a clothes drying rack according to claim 1, characterized in that: The assembly structure includes a mounting hole located at the top of the punch.

7. A stamping device, characterized in that: The device includes a working platform, a drive mechanism, an upper die, a lower die, and the aforementioned punch. The lower die is fixed on the working platform, and the upper die is positioned above the lower die. The punch's assembly structure is fitted to the bottom of the upper die. The drive mechanism drives the upper die to move closer to or away from the lower die.

8. The stamping device according to claim 7, characterized in that, Its features are: The number of punches is two, symmetrically arranged at both ends of the bottom of the upper die.

9. The stamping device according to claim 8, characterized in that: It also includes a stripper plate, which is elastically disposed at the bottom of the upper mold. The stripper plate has a through hole, and the punch is disposed through the through hole.

10. The stamping device according to claim 9, characterized in that: The stripper plate is elastically mounted to the bottom of the upper mold by a spring.

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