A nail tack mold

Abstract

This utility model relates to a nail-tapping mold, including an upper mold assembly and a lower mold assembly. The lower mold assembly has a waiting position, a nail assembly, and a positioning ejector assembly; the upper mold assembly has a punching head that cooperates with the nail assembly. The positioning ejector assembly includes an ejector pin and a first elastic element, with a magnetic block fixedly provided at the upper end of the ejector pin for magnetic positioning in cooperation with the protrusion of the workpiece. This nail-tapping mold has a simple structure and ingenious design. By setting a magnetic block in the positioning ejector assembly, it can form a magnetic attraction with the protrusion on the workpiece, thereby firmly adhering the workpiece. Magnetic positioning keeps the workpiece stable in the waiting position, avoiding nail placement deviation or jamming due to workpiece shaking or deformation, thus improving the success rate of nail placement. The nail hole alignment accuracy is high, which is beneficial for subsequent stamping of nails and reduces the nail damage rate and mold damage risk.

Description

Technical Field

[0001] This utility model relates to the technical field of metal hardware processing molds, and more specifically, to a nail rivet mold. Background Technology

[0002] In machining, mold making, and stamping, rivet dies are a common and important processing equipment, widely used for assembling, fixing, or structurally reinforcing various metal or metal composite workpieces. In actual production processes, such as... Figure 1 As shown, due to the complex structure and large size of the workpiece, and the presence of multiple protrusions or bumps on its surface, the workpiece is prone to generating significant internal stress during the stamping process. This stress concentration not only affects the forming quality of the workpiece but also causes a severe decrease in the flatness of the workpiece during the stapling process, making it difficult to maintain a flat state, which in turn affects the subsequent assembly accuracy and product quality.

[0003] Especially during the tapping operation, due to the large size of the workpiece and the wide distribution of the nail holes, particularly at the edges or corners of the workpiece where the nail holes are densely packed and the structural space is limited, some straight nails cannot be accurately aligned during placement. During the tapping process, the straight nails are prone to deviating from the center of the nail hole and colliding with the edge of the mandrel hole in the lower die assembly, causing deformation or even breakage of the straight nail. In severe cases, this can damage the die structure, increasing the scrap rate and maintenance costs.

[0004] Furthermore, due to the presence of multiple protruding structures on the workpiece surface, the workpiece itself cannot naturally and smoothly conform to the lower die assembly due to uneven stress distribution before the pin is applied, further increasing the alignment deviation between the pin hole and the stamping head. Especially during the pinning operation, if the workpiece cannot be stably attracted and positioned on the waiting position of the lower die assembly, the straight pin is prone to displacement, causing pinning failure or pin damage. Currently, commonly used solutions in the industry mainly include: improving the alignment accuracy of the straight pin by optimizing the mold structure, adjusting the pin hole position, and adding auxiliary positioning pins. However, these methods often require significant modifications to the mold structure, which not only increases the manufacturing cost and cycle of the mold, but also fails to fundamentally solve the problems of inaccurate straight pin alignment, high pin damage rate, and poor workpiece flatness when dealing with complex workpiece structures.

[0005] Therefore, there is an urgent need for a simple, low-cost nailing mold suitable for complex workpieces, which can effectively improve the flatness of the workpiece and the alignment accuracy of the straight nails without changing the original mold structure, thereby reducing nail damage, improving nailing efficiency and product quality. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model provides a nail-tapping mold. By incorporating a magnetically attached positioning pin assembly in the lower mold component, it achieves adsorption and positioning of the workpiece, thereby improving the alignment accuracy and nail-tapping efficiency of straight nails, reducing nail breakage rate, and improving product quality. This nail-tapping mold is particularly suitable for workpieces with complex structures, large dimensions, and multiple protrusions or bumps on the surface. It can effectively improve the alignment accuracy of straight nails, reduce nail breakage rate, and enhance overall nail-tapping efficiency and product quality.

[0007] To achieve the above objectives, the technical problem to be solved by this utility model is to provide a nailing mold that addresses the aforementioned deficiencies of the prior art.

[0008] The technical solution adopted by this utility model to solve its technical problem is: a rivet mold, including an upper mold assembly and a lower mold assembly; wherein, the lower mold assembly is provided with a waiting position for placing the workpiece; the lower mold assembly is provided with a rivet assembly and a positioning ejector assembly for adsorbing and positioning the workpiece; the upper mold assembly is provided with a punch head that cooperates with the rivet assembly to rivet the rivet holes of the workpiece; the positioning ejector assembly includes an ejector pin with its tip facing the waiting position, and a first elastic element that provides elastic force to the ejector pin; the lower mold assembly is provided with a first movable groove that accommodates the positioning ejector assembly and communicates with the waiting position; the upper end of the ejector pin is fixedly provided with a magnetic block that magnetically attracts the protrusion of the workpiece.

[0009] The tack mold of this utility model includes a plurality of positioning pin assemblies, which are arranged sequentially around the tack assembly.

[0010] The tack mold of this utility model includes a fixing block fixedly installed on one side of the tack assembly in the lower mold assembly, and a slider fixedly connected to the tack assembly and slidingly connected to the fixing block for limiting.

[0011] The rivet mold of this utility model includes a rivet that is vertically arranged and fixedly connected to the slider, and a second elastic element that provides elastic force to the rivet.

[0012] The rivet mold of this utility model includes a slider located at the upper end of the rivet; a mounting block for vertical placement of the straight nail is fixedly provided at the upper end of the rivet; a guide channel for accommodating the rivet and the mounting block is provided on the slider; when the straight nail is inserted into the corresponding nail hole on the workpiece, at least a portion of the straight nail protrudes from the upper surface of the workpiece.

[0013] The tack mold of this utility model has a vertically arranged guide groove on the side surface of the fixing block facing the slider; and a protrusion on the outer surface of the slider that is slidably connected to the guide groove.

[0014] In the tack mold of this utility model, the upper inner surface of the guide groove is provided with a limiting surface; when the convex strip moves upward to abut against the limiting surface, at least a portion of the mounting block protrudes from the upper surface of the lower mold assembly.

[0015] The tack mold of this utility model has a second movable groove for accommodating the tack assembly located below the slider.

[0016] The rivet mold of this utility model includes a punching head comprising a fixing insert fixedly connected to the lower end of the upper mold assembly; a punching block corresponding to the mounting block is fixedly disposed on the fixing insert; the cross-sectional area of ​​the punching block is not less than the cross-sectional area of ​​the mounting block.

[0017] The tack mold of this utility model has an embedding groove on the upper end face of the ejector pin; the magnetic block is interference-fitted into the embedding groove; when the magnetic block is installed in place, the upper surface of the magnetic block is flush with the upper surface of the ejector pin.

[0018] The beneficial effects of this utility model are as follows: The rivet mold has a simple structure and ingenious design. By setting a magnetic block in the positioning ejector assembly of the lower mold assembly, the magnetic force of the magnetic block is used to firmly attract workpieces with complex structures, large sizes and multiple protrusions on the surface to the waiting position, which significantly improves the alignment accuracy and placement success rate of the straight nails. The upper mold assembly is equipped with a punching head that works with the rivet assembly to drive the nails. Under the magnetic positioning of the workpiece by multiple positioning ejector assemblies, the nail damage rate and mold damage risk are reduced, thereby improving the efficiency of the rivet operation and the stability of product quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the product's planar structure.

[0021] Figure 2 This is a schematic diagram of the structure of a nail mold according to a preferred embodiment of the present invention.

[0022] Figure 3 yes Figure 2 Top view of the center pin 231. Detailed Implementation

[0023] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Furthermore, the terms indicating orientation, such as "up, down, front, back, left, right, upper end, lower end, longitudinal," etc., are all based on the posture and position of the device or equipment described in this solution during normal use.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] A preferred embodiment of this utility model provides a nail-tapping mold, such as... Figure 2-3As shown, the assembly includes an upper mold assembly 10 and a lower mold assembly 20. The lower mold assembly 20 has a waiting position 21 for placing the workpiece 01. The lower mold assembly 20 has a pin assembly 22 and a positioning ejector assembly 23 for adsorbing and positioning the workpiece 01. The upper mold assembly 10 has a punch head 11 that cooperates with the pin assembly 22 to pin the pin hole of the workpiece 01. The positioning ejector assembly 23 includes an ejector pin 231 with its tip facing the waiting position 21, and a first elastic element 232 that provides elastic force to the ejector pin 231. The first elastic element 232 is a spring. The lower mold assembly 20 has a first movable groove 24 that accommodates the positioning ejector assembly 23 and communicates with the waiting position 21. The upper end of the ejector pin 231 is fixedly provided with a magnetic block 233 that magnetically attracts the protrusion of the workpiece 01. By setting a magnetic block in the positioning ejector pin assembly, a magnetic attraction can be formed with the protrusion on the workpiece, thereby firmly adhering the workpiece. Magnetic positioning keeps the workpiece stable in the waiting position, avoiding the offset or jamming of the nail placement caused by workpiece shaking or deformation, thereby improving the success rate of nail placement. The high alignment accuracy of the nail hole is beneficial to subsequent stamping and nailing, reducing the nail damage rate and the risk of mold damage.

[0029] This nail-tapping mold has a simple structure and ingenious design. By setting magnetic blocks in the positioning ejector assembly of the lower mold assembly, the magnetic force of the magnetic blocks firmly attracts workpieces with complex structures, large dimensions, and multiple protrusions on the surface to the waiting position, which significantly improves the alignment accuracy and placement success rate of the straight nails. The upper mold assembly is equipped with a punching head that works with the nail assembly to drive the nails. With the magnetic positioning of the workpiece by multiple positioning ejector assemblies, the nail damage rate and the risk of mold damage are reduced, thereby improving the efficiency of the nail-tapping operation and the stability of product quality.

[0030] Furthermore, multiple positioning pin assemblies 23 are provided, arranged sequentially around the nail assembly 22. This allows for the even distribution of magnetic attraction force, applying adsorption force to the workpiece from multiple directions, ensuring the entire workpiece is more stably attached to the designated position. This is particularly important for workpieces with complex structures and large dimensions, effectively preventing displacement, warping, or deformation during the nailing process. Each pin assembly not only positions the workpiece but also allows for fine-tuning to a certain extent, ensuring the nail hole aligns with the punching head of the nail assembly, thereby improving nailing accuracy and success rate.

[0031] Optionally, a fixing block 25 and a slider 26, fixedly connected to the nail assembly 22 and slidably connected to the fixing block 25, are fixedly mounted on one side of the nail assembly 22 within the lower die assembly 20. This limiting sliding structure provides a clear guide path for the movement of the nail assembly 22. This ensures that the nail assembly moves smoothly along a predetermined trajectory during stamping, avoiding misalignment of the nail or angular deviation between the stamping head and the workpiece due to offset or wobbling. The limiting structure restricts the lateral or tilting displacement of the nail assembly, improving the repeatability accuracy of the nailing action.

[0032] Furthermore, the nail assembly 22 includes a vertically arranged nail 221 fixedly connected to the slider 26, and a second elastic element 222 that provides elastic force to the nail 221. The second elastic element 222 (such as a spring) provides elastic force to the nail 221, causing it to automatically return to its initial position after the nailing action is completed. This avoids the need for manual reset of the nail or reliance on external power for return, simplifying the operation process, and is especially suitable for high-frequency nailing operations. The buffering effect of the second elastic element can also absorb the impact force during the nailing process, reducing the hard collision between the nail 221 and the workpiece or mold, and reducing noise and wear.

[0033] Furthermore, the slider 26 is located at the upper end of the tack 221; the upper end of the tack 221 is fixedly provided with a mounting block 223 for vertical placement of the straight nail 02. The mounting block 223 has a positioning function for the straight nail, ensuring that the straight nail can be accurately inserted into the corresponding nail hole of the workpiece 01; the slider 26 is provided with a guide channel 261 for accommodating the tack 221 and the mounting block 223, providing space for the tack and the mounting block to move in a guiding manner, ensuring the smoothness and guidance of the tack action; when the straight nail 02 is inserted into the corresponding nail hole on the workpiece 01, at least a part of the straight nail 02 protrudes from the upper surface of the workpiece 01, which facilitates the subsequent tack operation of the upper end of the straight nail by the punch head 11, so that the end of the straight nail is deformed and fixed in the nail hole.

[0034] Furthermore, the fixed block 25 has a vertically arranged guide groove 251 on the side surface facing the slider 26; the outer surface of the slider 26 has a protrusion 261 that slides and engages with the guide groove 251. The engagement of the guide groove 251 and the protrusion 261 provides a clear guide path for the up-and-down movement of the slider 26, ensuring that it slides smoothly in the vertical direction during the nailing process and avoiding a decrease in nailing accuracy due to offset or shaking. This guide structure also effectively prevents the slider from tilting, jamming, or offsetting during movement, thereby improving the consistency and reliability of the nailing action.

[0035] Furthermore, the upper inner surface of the guide groove 251 is provided with a limiting surface 252; in the natural state, the second elastic member is in a free state (i.e., the second elastic member is not compressed), the protrusion 261 moves upward to abut against the limiting surface 252, and at least a part of the mounting block 223 protrudes from the upper surface of the lower mold assembly 20, which facilitates the identification of the straight nail, the insertion and alignment with the nail hole of the workpiece, or the replacement or repair of the mounting block in subsequent operations, and also has the function of stripping the workpiece.

[0036] Furthermore, the lower mold assembly 20, located below the slider 26, has a second movable groove 27 for accommodating the nail assembly 22. The second movable groove 27 provides a clear path and structural space for the movement of the nail assembly.

[0037] Optionally, the punch head 11 includes a fixing insert 111 fixedly connected to the lower end of the upper die assembly 10; a punch block 112 corresponding to the mounting block 223 is fixedly disposed on the fixing insert 111; the cross-sectional area of ​​the punch block 112 is not less than the cross-sectional area of ​​the mounting block 223, and can cooperate with the mounting block 223 to provide a larger contact area and a more uniform pressure distribution for the straight nail 02 during the nailing process.

[0038] Furthermore, the upper end face of the ejector pin 231 is provided with an embedding groove 234; the magnetic block 233 is interference-fitted into the embedding groove 234, which can be firmly fixed on the ejector pin 231, preventing loosening or displacement due to vibration, impact or punching pressure during mold use; when the magnetic block 233 is installed in place, the upper surface of the magnetic block 233 is flush with the upper surface of the ejector pin 231, which can ensure that the surface of the workpiece 01 is flat when it contacts the ejector pin, and avoid workpiece positioning deviation or surface scratches caused by the protrusion or depression of the magnetic block.

[0039] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A swage die comprising an upper die assembly and a lower die assembly; characterized in that, The lower die assembly has a waiting position for placing the workpiece; the lower die assembly has a nailing assembly and a positioning ejector assembly for adsorbing and positioning the workpiece; the upper die assembly has a punching head that cooperates with the nailing assembly to nail the nail holes of the workpiece; the positioning ejector assembly includes an ejector pin with its tip facing the waiting position, and a first elastic element that provides elastic force to the ejector pin; the lower die assembly has a first movable groove that accommodates the positioning ejector assembly and communicates with the waiting position; a magnetic block that magnetically attracts the workpiece by cooperating with the convex hull of the workpiece is fixed on the ejector pin.

2. The clicker mold of claim 1, wherein, The positioning pin assembly is provided in multiple ways, and the multiple positioning pin assemblies are arranged sequentially around the tapping pin assembly.

3. The mallet nail mold according to claim 1 or 2, characterized in that, A fixing block is fixedly installed inside the lower mold assembly on one side of the nail assembly, and a slider is fixedly connected to the nail assembly and cooperates with the fixing block for limiting sliding connection.

4. The rivet mold according to claim 3, characterized in that, The rivet assembly includes a rivet that is vertically arranged and fixedly connected to the slider, and a second elastic element that provides elastic force to the rivet.

5. The rivet mold according to claim 4, characterized in that, The slider is located at the upper end of the tack; the upper end of the tack is fixedly provided with a mounting block for vertical placement of the straight nail; the slider is provided with a guide channel for accommodating the tack and the mounting block; when the straight nail is inserted into the corresponding nail hole on the workpiece, at least a portion of the straight nail protrudes from the upper surface of the workpiece.

6. The rivet mold according to claim 5, characterized in that, The fixed block has a vertically arranged guide groove on the side surface facing the slider; the outer surface of the slider has a protrusion that slides and engages with the guide groove.

7. The rivet mold according to claim 6, characterized in that, The upper inner surface of the guide groove is provided with a limiting surface; when the convex strip moves upward to abut against the limiting surface, at least a portion of the mounting block protrudes from the upper surface of the lower mold assembly.

8. The rivet mold according to claim 3, characterized in that, The lower mold assembly is located below the slider and has a second movable groove for accommodating the rivet assembly.

9. The rivet mold according to claim 7, characterized in that, The stamping head includes a fixing insert fixedly connected to the lower end of the upper die assembly; a stamping block corresponding to the mounting block is fixedly disposed on the fixing insert; the cross-sectional area of ​​the stamping block is not less than the cross-sectional area of ​​the mounting block.

10. The rivet mold according to claim 1, characterized in that, The upper end face of the ejector pin is provided with an embedding groove; the magnetic block is interference-fitted into the embedding groove; when the magnetic block is installed in place, the upper surface of the magnetic block is flush with the upper surface of the ejector pin.

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