Punching die for nut part

Abstract

The utility model discloses a stamping die for nuts, which comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die holder, the bottom of the upper die holder is fixedly connected with an upper die plate, the bottom of the upper die plate is fixedly connected with a punch fixing plate, and the bottom of the punch fixing plate is fixedly connected with a plurality of first punches. The second punches are positioned on one side of each first punch; the lower die assembly comprises lower die bases located on the two sides, the tops of the two lower die bases are jointly and fixedly connected with a lower die plate, and a channel allowing a nut plate to penetrate through is formed in the top of the lower die plate. The bottom of the channel is provided with a first punching hole allowing the first punch to penetrate through and a second punching hole allowing the second punch to penetrate through. According to the utility model, the combination of the circular first punch and the regular hexagonal second punch is adopted and matched with the punching holes with the corresponding shapes on the lower template, so that the hole pattern required by the nut can be efficiently and accurately punched, the processing efficiency and the forming precision of the nut are improved, and the strict requirements of industrial production on the specification and the quality of the nut are met.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a stamping mold for nut parts. Background Technology

[0002] In modern industrial production, nuts are indispensable standard connecting parts, widely used in machinery manufacturing, automobiles, aerospace, and many other fields. Their quality and machining accuracy directly affect the assembly quality and overall performance of products. Therefore, high-efficiency and high-precision machining of nuts is required. Currently, the stamping of nuts mainly relies on stamping dies, but traditional nut stamping dies have certain limitations in structural design and performance.

[0003] Traditional stamping dies have relatively simple punch structures, making it difficult to stamp the hexagonal outer hole and circular inner hole required for nuts in a single operation. This often requires multiple processes or sets of dies, leading to low processing efficiency and the accumulation of errors over time, affecting the forming accuracy of the nuts and failing to meet the stringent specifications and quality requirements of industrial production. Furthermore, the contact between the punch and the sheet metal during stamping generates significant impact force. Due to the lack of effective cushioning devices, die components are easily damaged by excessive force, and frequent repairs and replacements increase production costs.

[0004] Based on the above, this utility model proposes a stamping die for nut parts, which can effectively solve the above problems. Utility Model Content

[0005] This utility model addresses the shortcomings of the existing technology by providing a stamping die for nut parts.

[0006] This utility model is achieved through the following technical solution:

[0007] A stamping die for nuts includes an upper die assembly and a lower die assembly, wherein:

[0008] The upper mold assembly includes an upper mold base, an upper template fixedly connected to the bottom of the upper mold base, a punch fixing plate fixedly connected to the bottom of the upper template, and a plurality of equally spaced and uniformly distributed circular first punches, and a regular hexagonal second punch located on one side of each first punch.

[0009] The lower die assembly includes lower die bases located on both sides. The top of the two lower die bases is fixedly connected to a lower template. The top of the lower template has a channel for the nut plate to pass through. The bottom of the channel has a first punch hole for the first punch to pass through and a second punch hole for the second punch to pass through.

[0010] According to the above technical solution, as a further preferred technical solution, a buffer plate is provided below the punch fixing plate, and the four corners of the buffer plate are respectively connected to the upper mold base through a buffer mechanism.

[0011] According to the above technical solution, as a further preferred technical solution, the buffer mechanism includes a limiting sleeve, which is installed inside the buffer plate. A connecting post is inserted into the limiting sleeve, and sliders are symmetrically installed at both ends of the bottom of the connecting post. A sliding groove is opened inside the limiting sleeve to slide with the sliders. A fixing block is fixedly connected to the top of the connecting post through the limiting sleeve. The fixing block is fixedly connected to the upper mold base. The bottom of the fixing block is fixedly connected to the top of the return spring. The bottom of the return spring is fixedly connected to the limiting sleeve. The connecting post is disposed inside the return spring.

[0012] According to the above technical solution, as a further preferred technical solution, the buffer plate is provided with a first through hole for the first punch to pass through and a second through hole for the second punch to pass through.

[0013] According to the above technical solution, as a further preferred technical solution, the bottom two sides of the upper mold base are respectively fixedly connected to a first guide seat, the top of the lower mold base is fixedly connected to a second guide seat, the second guide seat is fixedly connected to a guide rod, and the top of the guide rod is engaged with the first guide seat.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] This utility model provides a stamping die for nuts, employing a combination of a circular first punch and a regular hexagonal second punch. Combined with corresponding punched holes on the lower die, it can efficiently and accurately stamp the required hole shape for the nut, significantly improving the processing efficiency and forming accuracy of the nut, and meeting the stringent requirements of industrial production for nut specifications and quality. The buffer plate and buffer mechanism effectively mitigate the impact force generated during stamping, preventing damage to the die due to excessive instantaneous force, greatly extending the die's service life, and reducing maintenance and replacement costs. Simultaneously, the stable stamping process further ensures the processing quality of the nut, reducing processing errors caused by impact vibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the lower mold assembly structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the upper mold assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the buffer plate structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the buffer mechanism structure of this utility model. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0022] A stamping die for nuts includes an upper die assembly and a lower die assembly, wherein:

[0023] The upper mold assembly includes an upper mold base 1, an upper template 2 fixedly connected to the bottom of the upper mold base 1, a punch fixing plate 3 fixedly connected to the bottom of the upper template 2, and a plurality of equally spaced and uniformly distributed circular first punches 4 and a regular hexagonal second punch 5 located on one side of each first punch 4.

[0024] The lower mold assembly includes lower mold bases 6 located on both sides. The top of the two lower mold bases 6 is fixedly connected to a lower template 7. The top of the lower template 7 is provided with a channel 71 for the nut plate 8 to pass through. The bottom of the channel 71 is provided with a first punch 72 for the first punch 4 to pass through and a second punch 73 for the second punch 5 to pass through.

[0025] Furthermore, in another embodiment, a buffer plate 9 is provided below the punch fixing plate 3, and the four corners of the buffer plate 9 are respectively connected to the upper mold base 1 through the buffer mechanism 10.

[0026] By setting up the buffer plate 9 and the buffer mechanism 10, the upper die assembly can tightly press the nut plate 8 when pressing down, preventing the nut plate 8 from shifting during the stamping process, thereby improving the stability of the stamping process and the processing quality of the nut parts.

[0027] Furthermore, in another embodiment, the buffer mechanism 10 includes a limiting sleeve 101, which is installed inside the buffer plate 9. A connecting post 102 is inserted into the limiting sleeve 101. Slider blocks 103 are symmetrically installed at both ends of the bottom of the connecting post 102. A sliding groove 104 is opened inside the limiting sleeve 101 to slide with the slider 103. A fixing block 105 is fixedly connected to the top of the connecting post 102 through the limiting sleeve 101. The fixing block 105 is fixedly connected to the upper mold base 1. The bottom of the fixing block 105 is fixedly connected to the top of the return spring 106. The bottom of the return spring 106 is fixedly connected to the limiting sleeve 101. The connecting post 102 is disposed inside the return spring 106.

[0028] By setting up the buffer mechanism 10, when the upper mold assembly descends, the buffer plate 9 first contacts the nut plate 8; as the upper mold continues to descend, the slider 103 at the bottom of the connecting column 102 slides down along the groove 104 in the limiting sleeve 101, the connecting column 102 retracts into the limiting sleeve 101, and the return spring 106 between the fixing block 105 and the limiting sleeve 101 is compressed, accumulating elastic potential energy. During this process, the compression force of the return spring 106 causes the buffer plate 9 to press the plate tightly, preventing its displacement, while the spring absorbs the impact force, buffering and damping the shock.

[0029] After the stamping is completed, the upper die moves upward, and the return spring 106, which has lost pressure, returns to its original state, generating an upward reset force. This force pushes the limit sleeve 101, causing the buffer plate 9 to move upward. The connecting column 102 returns to its initial position with the cooperation of the slider 103 and the slide groove 104, thus completing the automatic reset of the buffer plate.

[0030] Furthermore, in another embodiment, the buffer plate 9 has a first through hole 91 through which the first punch 4 passes and a second through hole 92 through which the second punch 5 passes.

[0031] By setting the first through hole 91 and the second through hole 92, it is ensured that the first punch 4 and the second punch 5 can pass smoothly through the buffer plate 9 during the stamping process, thus ensuring the normal stamping operation of the first punch 4 and the second punch 5.

[0032] Furthermore, in another embodiment, a first guide seat 11 is fixedly connected to both sides of the bottom of the upper mold base 1, and a second guide seat 12 is fixedly connected to the top of the lower mold base 6. A guide rod 13 is fixedly connected to the second guide seat 12, and the top of the guide rod 13 is engaged with the first guide seat 11.

[0033] By setting the first guide seat 11, the second guide seat 12 and the guide rod 13, a guiding function is provided for the relative movement of the upper die assembly and the lower die assembly during the stamping process, which can ensure that the upper die assembly is accurately aligned with the lower die assembly during stamping.

[0034] The working principle of this utility model is as follows:

[0035] First, place the nut plate 8 on the lower template 7 of the lower mold assembly, and position the nut plate 8 within the channel 71 through which it passes, thus completing the initial positioning of the material to be processed.

[0036] When stamping begins, the upper die assembly moves downward under the drive of an external pressure device such as a press. The upper die base 1 drives the upper template 2 and punch fixing plate 3, which are fixedly connected to it, to move downward together, and the first punch 4 and the second punch 5 also move downward. Since the first punch 4 is circular and the second punch 5 is regular hexagonal, and the bottom of the channel 71 of the lower template 7 has corresponding first punch 72 and second punch 73, when the first punch 4 passes through the first through hole 91 on the buffer plate 9 and the first punch 72 on the lower template 7, and the second punch 5 passes through the second through hole 92 on the buffer plate 9 and the second punch 73 on the lower template 7, it will stamp the nut plate 8, thereby stamping out circular and regular hexagonal holes on the plate, initially forming the basic shape of the nut part.

[0037] During the stamping process, the buffer plate 9 located below the punch fixing plate 3 plays a crucial role in buffering. The buffer plate 9 is connected to the upper die base 1 via the four corner buffer mechanisms 10. When the punch contacts the nut plate 8 and generates an impact force, the buffer plate 9 moves upward due to the impact. The connecting column 102 slides upward within the limiting sleeve 101, and the slider 103 slides within the slide groove 104, limiting and guiding the movement of the buffer plate 9 to prevent it from deviating. At the same time, the return spring 106 is compressed, absorbing the impact force generated by stamping, preventing damage to the die due to excessive impact force, protecting the die components, extending the die's service life, and making the stamping process smoother and improving the stamping quality.

[0038] Furthermore, the first guide seats 11 on both sides of the bottom of the upper die base 1 cooperate with the second guide seat 12 and guide rod 13 on the top of the lower die base 6. During the up-and-down movement of the die, the top of the guide rod 13 engages with the first guide seat 11 to provide precise guidance for the movement of the upper die assembly, ensuring that the upper die assembly and the lower die assembly maintain accurate relative positions during the stamping process. This ensures that the first punch 4 and the second punch 5 can be accurately aligned with the first punch hole 72 and the second punch hole 73 on the lower die plate 7, so that the dimensional accuracy of the stamped nut part meets the requirements and prevents the stamped part from being scrapped or the die from being damaged due to die misalignment.

[0039] After stamping is completed, the external pressure device drives the upper die assembly to reset upwards, the reset spring 106 restores its deformation, pushes the buffer plate 9 to reset downwards, and returns the die to its initial state so that the next stamping operation can be carried out.

[0040] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the stamping die for nut parts according to this utility model, and can produce the positive effects described in this utility model.

[0041] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0042] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0043] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A stamping die for nuts, characterized in that: Includes an upper mold assembly and a lower mold assembly, wherein: The upper mold assembly includes an upper mold base (1), an upper template (2) is fixedly connected to the bottom of the upper mold base (1), a punch fixing plate (3) is fixedly connected to the bottom of the upper template (2), and a plurality of equally spaced and uniformly distributed circular first punches (4) and a regular hexagonal second punch (5) located on one side of each first punch (4) are fixedly connected to the bottom of the punch fixing plate (3). The lower mold assembly includes lower mold bases (6) located on both sides. The top of the two lower mold bases (6) is fixedly connected to a lower template (7). The top of the lower template (7) is provided with a channel (71) for the nut plate (8) to pass through. The bottom of the channel (71) is provided with a first punch (72) for the first punch (4) to pass through and a second punch (73) for the second punch (5) to pass through.

2. The stamping die for nut parts according to claim 1, characterized in that: A buffer plate (9) is provided below the punch fixing plate (3), and the four corners of the buffer plate (9) are connected to the upper mold base (1) through the buffer mechanism (10).

3. A stamping die for nut parts according to claim 2, characterized in that: The buffer mechanism (10) includes a limiting sleeve (101), which is installed inside the buffer plate (9). A connecting post (102) is inserted into the limiting sleeve (101). Slider blocks (103) are symmetrically installed at both ends of the bottom of the connecting post (102). A sliding groove (104) is opened inside the limiting sleeve (101) to slide with the slider (103). A fixing block (105) is fixedly connected to the top of the connecting post (102) through the limiting sleeve (101). The fixing block (105) is fixedly connected to the upper mold base (1). The bottom of the fixing block (105) is fixedly connected to the top of the return spring (106). The bottom of the return spring (106) is fixedly connected to the limiting sleeve (101). The connecting post (102) is located inside the return spring (106).

4. A stamping die for nut parts according to claim 3, characterized in that: The buffer plate (9) has a first through hole (91) through which the first punch (4) passes and a second through hole (92) through which the second punch (5) passes.

5. A stamping die for nut parts according to claim 1, characterized in that: The bottom sides of the upper mold base (1) are respectively fixedly connected to the first guide seat (11), and the top of the lower mold base (6) is fixedly connected to the second guide seat (12). The second guide seat (12) is fixedly connected to the guide rod (13), and the top of the guide rod (13) is engaged with the first guide seat (11).

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