A mold for a side-riveted bulge-preventing rivet

Abstract

The utility model provides a kind of for edge rivet prevents material mold, the upper die module is located above the lower die module, the rivet needle is set in the upper end of the lower die module;The upper die module includes upper die seat, upper clamping plate, stripping component, elastic element and stop block;The lower end of the upper die seat is connected with the lower end of the upper clamping plate, and the stripping component is located below the upper clamping plate;The upper end of the elastic element is embedded and installed in the upper die seat, and the lower end of the elastic element is connected with the upper end of the stop block, and the stop block is embedded and installed between the upper clamping plate and the stripping component;When closing mould, the upper end of the stripping component is tightly attached to the lower end of the upper clamping plate, and the elastic element is in a contracted state;When opening mould, there is a gap between the upper end of the stripping component and the lower end of the upper clamping plate, and the elastic element is in an extended state;The stop block provided by the utility model can play the role of blocking material and stripping, and solve the problem of rivet product edge material expansion.

Description

Technical Field

[0001] This utility model belongs to the field of riveting mold technology, specifically relating to a mold for preventing material expansion of edge rivets. Background Technology

[0002] In some near-edge stamping applications, such as when the center of the rivet is only 1.0-1.5mm away from the edge of the product, the radial extrusion force of the rivet on the material during stamping does not have enough buffer space, which can easily cause the edge material to bulge outward, i.e., material expansion. Material expansion directly affects the dimensional accuracy of the product. If used for precision parts, it may cause problems such as assembly jamming or functional failure.

[0003] To prevent material overflow, the conventional approach is to use blocks to constrain the radial displacement of the material. However, considering the requirements for material removal, current solutions all have shortcomings. For example, if the block is fixed to the lower mold and protrudes beyond the material thickness, it is difficult to remove the product. If the block is fixed to the upper mold stripper plate and protrudes beyond the material thickness, the product will jam and still not be able to be removed. If the block is fixed to the clamping plate, the block and the rivet cannot be synchronized, and the block will lose its effect.

[0004] Therefore, how to prevent material from expanding when using edge rivets is an urgent problem to be solved. Summary of the Invention

[0005] To address the shortcomings of the prior art, this utility model provides a mold for preventing edge rivet expansion. The block is connected to the elastic element and embedded in the upper clamping plate and the stripping assembly, which can play the role of blocking and stripping material, thus solving the problem of edge rivet expansion.

[0006] The technical effects to be achieved by this utility model are realized through the following technical aspects: This utility model provides a mold for preventing material bulging of edge rivets, including an upper mold module, a lower mold module and rivet pins. The upper mold module is located above the lower mold module, and the rivet pins are disposed at the upper end of the lower mold module. The upper mold module includes an upper mold base, an upper clamping plate, a stripping assembly, an elastic element, and a stop block; The lower end of the upper mold base is connected to the lower end of the upper clamping plate, and the stripping assembly is located below the upper clamping plate; The upper end of the elastic element is embedded in the upper mold base, the lower end of the elastic element is connected to the upper end of the stop block, and the stop block is embedded between the upper clamping plate and the stripping assembly; When the mold is closed, the upper end of the stripping assembly is close to the lower end of the upper clamping plate, and the elastic element is in a contracted state; when the mold is opened, there is a gap between the upper end of the stripping assembly and the lower end of the upper clamping plate, and the elastic element is in an extended state.

[0007] In some implementations, the upper end of the stop block is formed with a first mounting groove, and the lower end of the elastic element is embedded in the first mounting groove, thereby improving the installation stability of the elastic element and ensuring the connection stability between the elastic element and the stop block.

[0008] In some implementations, the upper mold base and the upper clamping plate are connected by screws to ensure the stability of the connection between the upper mold base and the upper clamping plate.

[0009] In some implementations, the head of the screw faces the stripping assembly, and a washer is provided between the head of the screw and the upper clamping plate. A first groove is formed on the stop block relative to the washer. During the mold closing and opening processes, the first groove moves relative to the washer to limit the stroke of the stop block and ensure the stop block's material blocking and unloading functions.

[0010] In some implementations, in the mold-open state, the lower end face of the stop block is flush with the lower end face of the stripping assembly, ensuring that the lower end face of the stop block and the lower end face of the stripping assembly press the material synchronously.

[0011] In some implementations, the stripping assembly includes a stop plate and a stripping plate, with the lower end of the stop plate connected to the upper end of the stripping plate; In the mold-open state, the lower end face of the stop block is flush with the lower end face of the stripper plate.

[0012] In some implementations, the lower mold module includes a lower template, a lower pad, and a lower mold base connected sequentially from top to bottom; The rivet pin is embedded in the lower template, and the upper end of the rivet pin protrudes from the upper surface of the lower template.

[0013] In some implementations, the lower mold module further includes a lower pad block and a lower support plate; The upper end of the lower pad is connected to the lower end of the lower mold base, and the lower end of the lower pad is connected to the upper end of the lower support plate. The lower pad and the lower support plate play a role in installing, fixing and supporting the lower template, the lower pad, and the lower mold base, which facilitates the use of the mold.

[0014] In some implementations, a guide module for mold closure alignment is also provided between the upper mold module and the lower mold module to ensure the alignment accuracy of the upper mold module and the lower mold module during the closure process.

[0015] In some implementations, the guiding module includes a guide post and a guide sleeve; The guide post is embedded in the upper mold module, and the lower end of the guide post protrudes from the lower end face of the upper mold module. The guide sleeve is embedded in the upper end of the lower mold module, and the opening of the guide sleeve faces the guide post, so as to achieve accurate alignment of the upper mold module and the lower mold module during the closing process.

[0016] In summary, this utility model has at least the following advantages: 1. This utility model provides a mold for preventing material expansion of edge rivets. The stop block is connected to the elastic element. When the mold is closed, the upper end of the stripping component is close to the lower end of the upper clamping plate, the elastic element is in a contracted state, and the stop block acts as a material stop for the product. When the mold is opened, there is a gap between the upper end of the stripping component and the lower end of the upper clamping plate, the elastic element is in an extended state, and the stop block acts as a material release for the product.

[0017] 2. The present invention provides a mold for preventing rivet expansion near the edge, wherein the stop block is connected to the elastic element and embedded in the upper clamping plate and the stripping assembly, which can play the role of stopping and stripping the material, and solve the problem of rivet product expansion near the edge. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the mold opening state provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the mold in the closed state provided in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the upper mold module provided in Embodiment 2 of this utility model; Figure 4 This is a schematic diagram of the structure of the first slide groove provided in Embodiment 2 of this utility model; Figure 5 This is a schematic diagram of the mold opening state provided in Embodiment 3 of this utility model; Marked in the image: 100. Upper mold module; 110. Upper mold base; 120. Upper clamping plate; 130. Stripping assembly; 131. Stop plate; 132. Stripping plate; 140. Elastic element; 150. Stop block; 151. First slide groove; 200. Lower mold module; 210. Lower template; 220. Lower backing plate; 230. Lower mold base; 240. Lower pad block; 250. Lower support plate; 300. Rivet pins; 400. Screws; 500, Washers; 600. Guiding Module. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more comprehensive description will be given below in conjunction with the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] 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 invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] Example 1: Please see Figure 1 and Figure 2 A mold for preventing material bulging of edge rivets includes an upper mold module 100, a lower mold module 200, and rivet pins 300. The upper mold module 100 is located above the lower mold module 200, and the rivet pins 300 are disposed at the upper end of the lower mold module 200.

[0024] The lower mold module 200 is used to support and limit the product, while the upper mold module 100 moves downward under the action of external driving force. When the upper mold module 100 and the lower mold module 200 are in the closed mold state, the rivet pin 300 completes the riveting action on the product. When the upper mold module 100 and the lower mold module 200 are in the open mold state, the upper mold module 100 retracts to the initial height, and the operator unloads the product.

[0025] The upper mold module 100 includes an upper mold base 110, an upper clamping plate 120, a stripping assembly 130, an elastic element 140, and a stop block 150. The lower end of the upper mold base 110 is connected to the lower end of the upper clamping plate 120. The stripping assembly 130 is located below the upper clamping plate 120. The upper end of the elastic element 140 is embedded in the upper mold base 110. The lower end of the elastic element 140 is connected to the upper end of the stop block 150. The stop block 150 is embedded between the upper clamping plate 120 and the stripping assembly 130.

[0026] The upper mold base 110 is fixed together with the upper clamping plate 120, and pressure is transmitted through the upper mold base 110. The upper mold base 110 is also used to embed and guide the elastic element 140. The upper clamping plate 120 is used to clamp the stop block 150. The stripping assembly 130 is used to strip and press the material.

[0027] When the mold is closed, the upper end of the stripping assembly 130 is close to the lower end of the upper clamping plate 120, and the elastic element 140 is in a contracted state; when the mold is opened, there is a gap between the upper end of the stripping assembly 130 and the lower end of the upper clamping plate 120, and the elastic element 140 is in an extended state.

[0028] In practical applications, the product is placed on the lower mold module 200, which supports and limits the product. Under the action of external driving force, the upper mold module 100 moves the stop block 150 and the stripping component 130 downward. When the lower end of the stop block 150 and the lower end of the stripping component 130 contact the product surface or the lower mold module 200, as the upper mold module 100 continues to move downward, the gap between the upper end of the stripping component 130 and the lower end of the upper clamping plate 120 gradually decreases, until the upper end of the stripping component 130 is pressed against the lower end of the upper clamping plate 120, and the elastic element 140 is in a contracted state. At this point, the upper mold module 100 has moved downward into place. The upper mold module 100 and the lower mold module 200 are in a closed mold state. The stop block 150 performs the function of stopping the product, and the rivet pin 300 completes the riveting operation of the product. After the riveting operation is completed, the upper mold module 100 moves the stop block 150 and the stripping component 130 upward under the action of external driving force. In the early stage of the upward movement of the upper mold module 100, the gap between the lower end of the upper clamping plate 120 and the upper end of the stripping component 130 is opened. Then, as the upper mold module 100 continues to move upward, the stop block 150 returns to its initial state under its own gravity and the elastic force of the elastic element 140. In this process, the stop block 150 also completes the stripping operation of the product.

[0029] This embodiment provides a mold for preventing expansion of edge rivets. An elastic element 140 is embedded in the upper mold base 110, and the lower end of the elastic element 140 is connected to the stop block 150. That is, the position of the stop block 150 is not fixed. When the mold is in the closed state, the stop block 150 can stop the material of the product. When the mold is in the open state, the stop block 150 can also return to the initial position due to the elastic force of the elastic element 140, without getting stuck, thus realizing the stripping function of the product. Compared with the traditional method of fixing the stop block 150 in the lower mold plate 210, fixing the stop block 150 to the upper mold stripper plate 132, or fixing the stop block 150 to the clamping plate, this embodiment can realize the functions of stopping and stripping the product, and is suitable for preventing expansion of edge rivet products.

[0030] In some embodiments, the upper end of the stop 150 is formed with a first mounting groove, and the lower end of the elastic element 140 is embedded in the first mounting groove, thereby improving the installation stability of the elastic element 140 and ensuring the connection stability between the elastic element 140 and the stop 150.

[0031] Understandably, a through hole for mounting the elastic element 140 is provided on the upper mold base 110. A screw 400 is provided at the upper end of the through hole to abut against the upper end of the elastic element 140. The lower end of the elastic element 140 is embedded in the first mounting groove at the upper end of the stop block 150 and abuts against the upper end of the stop block 150. Here, the elastic element 140 can be a coil spring.

[0032] Example 2: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figure 1 and Figure 2 Based on the above Figure 3 and Figure 4 .

[0033] In this embodiment, the upper mold base 110 and the upper clamping plate 120 are locked together by screws 400 to ensure the stability of the connection between the upper mold base 110 and the upper clamping plate 120.

[0034] Specifically, after the lower end face of the upper mold base 110 is tightly attached to the upper end face of the upper clamping plate 120, a screw 400 is screwed in from one side of the lower end face of the upper clamping plate 120 to establish a stable connection between the upper mold base 110 and the upper clamping plate 120. Understandably, threaded holes for screwing in the screw 400 are provided in both the upper mold base 110 and the upper clamping plate 120.

[0035] In some embodiments, the head of the screw 400 faces the stripper assembly 130, and a washer 500 is provided between the head of the screw 400 and the upper clamping plate 120; a first groove 151 is formed on the stop block 150 at a position relative to the washer 500. During the mold closing and opening process, the first groove 151 moves relative to the washer 500 to limit the stroke of the stop block 150 and ensure the material blocking and stripping functions of the stop block 150.

[0036] For example, the outer diameter of the washer 500 is larger than the head diameter of the screw 400, so that the washer 500 protrudes outside the head of the screw 400. The edge of the washer 500 is embedded in the first groove 151. In actual operation, when the stop block 150 moves downward, the first groove 151 moves downward relative to the washer 500. When the upper end face of the first groove 151 abuts against the washer 500, it means that the stop block 150 has moved downward into place. Conversely, when the stop block 150 moves upward, the first groove 151 moves upward relative to the washer 500. When the lower end face of the first groove 151 abuts against the washer 500, it means that the stop block 150 has moved upward into place.

[0037] In this embodiment, by setting a washer 500 to limit the upward and downward movement of the stop block 150, the position of the stop block 150 is prevented from moving excessively, thus ensuring the material blocking and unloading functions of the stop block 150.

[0038] In some embodiments, in the mold-open state, the lower end face of the stop 150 is flush with the lower end face of the stripper assembly 130 to ensure that the lower end face of the stop 150 and the lower end face of the stripper assembly 130 press the material synchronously.

[0039] Furthermore, the stripping assembly 130 includes a stop plate 131 and a stripping plate 132, with the lower end of the stop plate 131 connected to the upper end of the stripping plate 132; in the mold-open state, the lower end face of the stop block 150 is flush with the lower end face of the stripping plate 132.

[0040] During the mold closing process, when the upper mold base 110 moves downward under the external driving force, the upper mold base 110 drives the upper clamping plate 120, the stop block 150, the stop plate 131 and the stripper plate 132 to move downward. The lower end face of the stop block 150 and the lower end face of the stripper plate 132 simultaneously contact the product. During the continuous downward movement, the stop block 150 squeezes the elastic element 140, and the gap between the upper end face of the stop plate 131 and the lower end face of the upper clamping plate 120 gradually narrows. When the upper end face of the stop plate 131 is in close contact with the lower end face of the upper clamping plate 120, it indicates that the upper mold module 100 has moved downward into place and cooperates with the lower mold module 200 to complete the riveting operation of the product. During this process, the stop block 150 plays the role of stopping the material.

[0041] In some embodiments, the lower mold module 200 includes a lower template 210, a lower pad 220, and a lower mold base 230 connected sequentially from top to bottom; rivet pins 300 are embedded in the lower template 210, and the upper end of the rivet pins 300 protrudes from the upper end surface of the lower template 210; the lower pad 220 and the lower mold base 230 are used to fix and support the lower template 210.

[0042] The lower mold module 200 also includes a lower pad 240 and a lower support plate 250. The upper end of the lower pad 240 is connected to the lower end of the lower mold base 230, and the lower end of the lower pad 240 is connected to the upper end of the lower support plate 250. The lower pad 240 and the lower support plate 250 play a role in installing, fixing and supporting the lower template 210, the lower pad 220 and the lower mold base 230, which facilitates the use of the mold.

[0043] Example 3: This embodiment has undergone further structural optimization based on embodiment 1 or 2. Please refer to... Figures 1-4 Based on the above Figure 5 .

[0044] In this embodiment, a guide module 600 for mold closure alignment is also provided between the upper mold module 100 and the lower mold module 200. The guide module 600 can ensure the alignment accuracy of the upper mold module 100 and the lower mold module 200 during the closure process.

[0045] Furthermore, the guide module 600 includes a guide post and a guide sleeve; the guide post is embedded in the upper mold module 100, and the lower end of the guide post protrudes from the lower end face of the upper mold module 100; the guide sleeve is embedded in the upper end of the lower mold module 200, and the opening of the guide sleeve faces the guide post. When the upper mold module 100 moves downward under external driving force, it drives the guide post to move downward, so that the guide post passes through the guide groove, thereby achieving the alignment accuracy of the upper mold module 100 and the lower mold module 200 during the closing process.

[0046] The above description is merely an example and illustration of the structure of this invention, and while the description is specific and detailed, it should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these obvious substitutions all fall within the protection scope of this invention.

Claims

1. A mold for preventing material bulging in edge-mounted rivets, characterized in that, It includes an upper mold module (100), a lower mold module (200), and a rivet pin (300). The upper mold module (100) is located above the lower mold module (200), and the rivet pin (300) is disposed at the upper end of the lower mold module (200). The upper mold module (100) includes an upper mold base (110), an upper clamping plate (120), a stripping assembly (130), an elastic element (140), and a stop (150). The lower end of the upper mold base (110) is connected to the lower end of the upper clamping plate (120), and the stripping assembly (130) is located below the upper clamping plate (120); The upper end of the elastic element (140) is embedded in the upper mold base (110), the lower end of the elastic element (140) is connected to the upper end of the stop block (150), and the stop block (150) is embedded between the upper clamping plate (120) and the stripping assembly (130). When the mold is closed, the upper end of the stripping assembly (130) is close to the lower end of the upper clamping plate (120), and the elastic element (140) is in a contracted state; when the mold is opened, there is a gap between the upper end of the stripping assembly (130) and the lower end of the upper clamping plate (120), and the elastic element (140) is in an extended state.

2. The mold for preventing material bulging of edge rivets according to claim 1, characterized in that, The upper end of the stop (150) is formed with a first mounting groove, and the lower end of the elastic element (140) is embedded in the first mounting groove.

3. The mold for preventing material bulging of edge rivets according to claim 1, characterized in that, The upper mold base (110) and the upper clamping plate (120) are locked together by screws (400).

4. The mold for preventing material bulging of edge rivets according to claim 3, characterized in that, The head of the screw (400) faces the stripping assembly (130), and a washer (500) is provided between the head of the screw (400) and the upper clamping plate (120). A first groove (151) is formed on the stop block (150) at a position relative to the washer (500). During the mold closing and opening processes, the first groove (151) moves relative to the washer (500) to limit the stroke of the stop block (150).

5. The mold for preventing material bulging of edge rivets according to claim 4, characterized in that, In the mold-open state, the lower end face of the stop (150) is flush with the lower end face of the stripping assembly (130).

6. The mold for preventing material bulging of edge rivets according to claim 5, characterized in that, The unloading assembly (130) includes a stop plate (131) and an unloading plate (132), with the lower end of the stop plate (131) connected to the upper end of the unloading plate (132); In the mold-open state, the lower end face of the stop (150) is flush with the lower end face of the stripper plate (132).

7. The mold for preventing material bulging of edge rivets according to claim 1, characterized in that, The lower mold module (200) includes a lower template (210), a lower pad (220), and a lower mold base (230) connected sequentially from top to bottom. The rivet pin (300) is embedded in the lower template (210), and the upper end of the rivet pin (300) protrudes from the upper surface of the lower template (210).

8. The mold for preventing material bulging of edge rivets according to claim 7, characterized in that, The lower mold module (200) also includes a lower pad (240) and a lower support plate (250); The upper end of the lower pad (240) is connected to the lower end of the lower mold base (230), and the lower end of the lower pad (240) is connected to the upper end of the lower support plate (250).

9. The mold for preventing material bulging of edge rivets according to any one of claims 1-8, characterized in that, A guide module (600) for mold closure alignment is also provided between the upper mold module (100) and the lower mold module (200).

10. The anti-bulging mold for edge rivets according to claim 9, characterized in that, The guide module (600) includes a guide post and a guide sleeve; The guide post is embedded in the upper mold module (100), and the lower end of the guide post is exposed on the lower end face of the upper mold module (100). The guide sleeve is embedded in the upper end of the lower mold module (200), and the opening of the guide sleeve faces the guide post.

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