Adjustable key structure and mold assembly structure

Abstract

The utility model relates to mould assembly technical field, concretely discloses adjustable key structure and mould assembly structure, include: adjustable key upper part and adjustable key lower part, the top of adjustable key upper part is provided with the screw hole downward, the top of adjustable key lower part is provided with oval hole downward, the screw hole and oval hole center axis correspond, and make the screw hole and oval hole keep fixed when fastener fastening through fastener, the utility model discloses through screwing fastener, can make adjustable key upper part along the smooth sliding of predetermine's guide structure to drive mould insert to carry out accurate fine adjustment, realize stepless, continuous adjustment of assembly gap, this adjustment process is direct, efficient, replaced the backward method of traditional dependence on manual trial assembly gasket or carries out the repair welding, makes mould assembly precision and stability significant improvement.

Description

Technical Field

[0001] This utility model relates to the field of mold assembly technology, specifically to an adjustable key structure and a mold assembly structure. Background Technology

[0002] In the manufacturing and assembly of stamping dies, die inserts need to be precisely positioned and fixed to the die body to ensure the overall accuracy of the die and the quality of the stamped products. Currently, the industry commonly uses a non-adjustable integral key structure to achieve the connection and positioning between the die insert and the die body. This traditional key is an integral part with fixed dimensions, and during assembly, its machining accuracy is relied upon to ensure the relative position between the die insert and the die body.

[0003] However, in actual mold processing, heat treatment, and assembly, dimensional accumulation errors are unavoidable. This often results in the actual assembly distance between the mold insert and the mold body not matching the design dimensions after a series of manufacturing processes. When using traditional non-adjustable keys for positioning, unexpected assembly gaps will occur between the insert and the non-adjustable keys. These gaps will affect the stability and precision of the mold, potentially leading to quality problems such as dimensional deviations and burrs in the stamped products.

[0004] To compensate for the aforementioned gaps, existing technologies typically employ remedial measures such as manual shims or welding. Manual shims require repeated trial fittings and measurements, making the operation cumbersome, and the addition of shims may introduce new instabilities. Welding, on the other hand, can cause thermal effects on mold parts, potentially leading to deformation and increasing the workload of subsequent grinding. These methods all rely on the operator's experience, significantly increasing mold assembly time and manufacturing costs, and making it difficult to guarantee adjustment accuracy, thus affecting the assembly efficiency and reliability of the mold. Therefore, this application provides an adjustable key structure and a mold assembly structure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an adjustable key structure and a mold assembly structure. This solves the problem that existing technologies rely on operator experience, which significantly increases mold assembly time and manufacturing costs, and makes it difficult to guarantee adjustment accuracy, thus affecting mold assembly efficiency and reliability.

[0006] The adjustable key structure of this utility model includes: an adjustable key upper part and an adjustable key lower part; The top of the adjustable key is provided with a downward-facing screw hole. An elliptical hole is provided at the top of the lower part of the adjustable rest key; The screw hole corresponds to the central axis of the elliptical hole, and the screw hole and the elliptical hole remain fixed when the fastener is tightened by the fastener. The upper and lower parts of the adjustable key are integrated by fasteners and screw holes and elliptical holes to form a whole.

[0007] The upper and lower contact surfaces of the adjustable key are provided with mutually cooperating guide structures.

[0008] As a further improvement of this utility model, the guide structure includes a slider and a limiting groove. The slider is adapted to the limiting groove to assist the upper part of the adjustable key and the lower part of the adjustable key in sliding contact.

[0009] As a further improvement of this utility model, the upper part of the adjustable key includes an upper body for cooperating with the mold insert.

[0010] As a further improvement of this utility model, the limiting groove is provided on the upper body in a mirror distribution with screw holes.

[0011] As a further improvement of this utility model, the adjustable rest key includes a lower body, and the slider is disposed above the lower body. There are two sliders, and the two sliders are distributed in a mirror image with elliptical holes.

[0012] This utility model also provides a mold assembly structure with an adjustable key structure, including a mold body and a mold insert disposed thereon, wherein at least one adjustable key structure is provided between the mold body and the mold insert.

[0013] As a further improvement of this utility model, the lower part of the adjustable key is fixed to the mold body, and the upper part of the adjustable key abuts against the mold insert.

[0014] As a further improvement of this utility model, by loosening the fastener, the position of the upper part of the adjustable key relative to the lower part of the adjustable key is adjusted, thereby adjusting the assembly gap between the mold insert and the mold body.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention allows the adjustable key to slide smoothly along a pre-set guide structure by loosening the fasteners, thereby driving the mold insert to make precise micro-adjustments. This enables stepless and continuous adjustment of the assembly gap. This adjustment process is direct and efficient, replacing the outdated methods that rely on manual trial fitting of shims or welding repairs. This significantly improves the assembly accuracy and stability of the mold. Because the gap is precisely controlled, minor movement of the mold during the stamping process caused by improper gaps is avoided, thus ensuring the dimensional consistency of the stamped products and improving product quality. At the same time, the assembly process no longer relies on the operator's superb skills and repeated trial and error, becoming simple and standardized, greatly shortening the assembly time and reducing labor intensity and manufacturing costs. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the upper and lower parts of the adjustable rest key of this utility model. Figure 2 This is a schematic diagram of the mold insert and mold body structure in Embodiment 2 of this utility model; Figure 3 This is a schematic diagram of the mold insert and mold body from another angle in Embodiment 2 of this utility model; Figure 4 This is a three-dimensional structural diagram of the upper part of the adjustable rest key of this utility model; Figure 5 This is a top view of the adjustable rest key structure of this utility model; Figure 6 This utility model Figure 5 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 7 This is a schematic diagram of the combination of the upper and lower guide structures of the adjustable rest key of this utility model; Figure 8 This is a top view of the combined upper and lower adjustable rest parts of the present invention. Figure 9 This is a three-dimensional structural diagram of the combination of the upper and lower adjustable rest keys of this utility model.

[0017] In the diagram: 1. Upper part of the adjustable key; 2. Lower part of the adjustable key; 3. Fastener; 4. Mold insert; 5. Mold body; 11. Upper body; 12. Screw hole; 13. Limiting groove; 21. Slider; 22. Lower body; 23. Oval hole. Detailed Implementation

[0018] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0019] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0020] Please see Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 as well as Figure 9 In actual mold processing, heat treatment, and assembly, dimensional accumulation errors are unavoidable. This results in the actual assembly distance between the mold insert 4 and the mold body 5 often not matching the design dimensions after a series of manufacturing processes. When using traditional non-adjustable keys for positioning, unexpected assembly gaps will occur between the insert and the non-adjustable key. This gap will affect the stability and accuracy of the mold, potentially leading to quality problems such as dimensional deviations and burrs in stamped products. Based on this, this application provides an adjustable key structure, including: an adjustable key upper part 1 and an adjustable key lower part 2; A screw hole 12 is provided at the top of the adjustable key 1 facing downwards; An oval hole 23 is provided at the top of the adjustable key lower part 2, facing downwards; The screw hole 12 corresponds to the central axis of the elliptical hole 23, and the screw hole 12 and the elliptical hole 23 are fixed when the fastener 3 is tightened by the fastener 3. The upper part 1 and the lower part 2 of the adjustable key are combined with the screw hole 12 and the elliptical hole 23 by the fastener 3 to form a whole.

[0021] The upper part 1 and the lower part 2 of the adjustable key are provided with mutually cooperating guide structures on their contact surfaces.

[0022] In actual mold assembly, the mold insert 4 needs to be precisely installed on the mold body 5. Due to cumulative errors caused by machining and heat treatment, the actual distance between the insert and the body may deviate from the design value. To solve this problem, this embodiment provides an adjustable key structure.

[0023] The adjustable key structure includes an adjustable upper key 1 and an adjustable lower key 2; The upper part 1 of the adjustable key is a block-shaped part, the upper surface of which is used to contact the side of the mold insert 4. A screw hole 12 is machined downward from an appropriate position on this upper surface. The lower part 2 of the adjustable key is also a block-shaped part, the lower surface of which is used to fix it to the mold body 5. At the corresponding position of the lower part 2 of the adjustable key, an elongated oval hole, i.e., an elliptical hole 23, extending in the adjustment direction is machined.

[0024] During assembly, the lower adjustable key 2 is first fixed to the mold body 5. Then, the upper adjustable key 1 is stacked on top of the lower one, ensuring that the screw hole 12 of the upper key is approximately aligned with the axis of the elliptical hole 23 of the lower key. At this point, a fastener 3, such as a hex socket head cap screw, is passed through the elliptical hole 23 of the lower key and screwed into the screw hole 12 of the upper key. With the screw not fully tightened, the upper adjustable key 1 can slide relative to the lower key along the length of the elliptical hole 23.

[0025] To ensure a smooth and directional adjustment process, a guide structure is provided on the contact surfaces of the two components. One feasible method is to machine two parallel raised sliders 21 on the upper surface of the lower part 2 of the adjustable rest. Correspondingly, two grooves, namely limiting grooves 13, are machined on the lower surface of the upper part 1 of the adjustable rest, precisely matching the shape of the sliders 21. When the upper and lower parts are closed, the sliders 21 are embedded in the limiting grooves 13, forming a sliding pair. This ensures that the upper part 1 of the adjustable rest can only move linearly along the direction of the sliders 21, i.e., the length direction of the elliptical hole 23, effectively preventing it from deflecting or warping during the adjustment process.

[0026] When adjusting the gap, the operator first uses a tool to slightly loosen the fastening screw. Then, based on the measured gap value between the mold insert 4 and the mold body 5, the operator gently taps the mold insert 4 with a copper rod or plastic hammer, causing the upper part 1 of the adjustable key in contact with it to slide along the guide direction until the gap value meets the design requirements. Finally, the operator uses a torque wrench to retighten the fastening screw to the specified torque. At this point, the screw head presses the lower part 2 of the adjustable key and locks it with the upper part 1 of the adjustable key through the thread, so that the upper and lower parts are firmly combined into a whole, thereby reliably positioning the mold insert 4 in the target position.

[0027] Please see Figure 1 , Figure 6 , Figure 7 , Figure 8 as well as Figure 9 The guide structure includes a slider 21 and a limiting groove 13. The slider 21 is adapted to the limiting groove 13 to assist the upper part 1 of the adjustable key and the lower part 2 of the adjustable key in sliding contact.

[0028] The adjustable key upper part 1 includes an upper body 11 for engaging with the mold insert 4.

[0029] The limiting groove 13 is provided on the upper body 11 and is distributed in a mirror image with the screw holes 12.

[0030] The adjustable lower part 2 includes a lower body 22, and a slider 21 is disposed above the lower body 22. There are two sliders 21, and the two sliders 21 are mirror-distributed with respect to the elliptical hole 23.

[0031] The guide structure is specifically implemented by machining a sliding bar 21 and a limiting groove 13 on the contact surfaces of the upper part 1 and the lower part 2 of the adjustable key, respectively. The sliding bar 21 serves as a guide protrusion, and the limiting groove 13 serves as a guide groove. The two are matched in shape to form a sliding pair. When the gap needs to be adjusted, the fastener 3 is loosened, and the upper part 1 of the adjustable key can move precisely in a straight line relative to the lower part under the guidance of the sliding bar 21 and the limiting groove 13. This avoids possible skewing or jamming during the adjustment process and ensures smooth movement and directional uniqueness.

[0032] Specifically, the main body of the adjustable key upper part 1, namely the upper body 11, has its bottom surface serving as a reference surface for mating with the lower part. On this bottom surface, with the center of the screw hole 12 as a reference, two limiting grooves 13 are symmetrically machined. These two limiting grooves 13 are mirror images distributed on both sides of the screw hole 12. They can be rectangular grooves or dovetail-shaped grooves, and their length direction is consistent with the length direction of the elliptical hole 23.

[0033] Correspondingly, on the upper surface of the upper body 11 of the adjustable key lower part 2, two slide bars 21 are machined to precisely match the aforementioned limiting groove 13. These two slide bars 21 are also arranged in a mirror image with the center line of the elliptical hole 23 as the axis of symmetry. The shape and size of the slide bars 21 must ensure that they can be smoothly inserted into the limiting groove 13, with an appropriate fitting clearance to ensure smooth sliding, while the clearance should not be too large to avoid loss of guiding accuracy.

[0034] In the assembled state, the lower slider 21 fits precisely into the limiting groove 13 on the upper bottom surface. This mirror-symmetric layout ensures a balanced distribution of guiding force, avoiding torque caused by unilateral force, thus guaranteeing that the upper part 1 of the adjustable key will not warp or twist during sliding, and can only move along a preset straight line. This structure not only achieves a reliable guiding function, but also enhances the rigidity and stability of the entire adjustable key structure in the locked state.

[0035] Example 2: Please refer to Figure 2 and Figure 3 This embodiment is mainly used to solve the problem of precise positioning of the mold insert 4 on the mold body 5, as follows: A mold assembly structure with an adjustable key structure includes a mold body 5 and a mold insert 4 disposed thereon, wherein at least one is disposed between the mold body 5 and the mold insert 4.

[0036] The lower part 2 of the adjustable key is fixed to the mold body 5, and the upper part 1 of the adjustable key abuts against the mold insert 4.

[0037] By loosening the fastener 3, the position of the upper part 1 of the adjustable key relative to the lower part 2 of the adjustable key is adjusted, thereby adjusting the assembly gap between the mold insert 4 and the mold body 5.

[0038] During assembly, the lower part of the adjustable key structure is first securely installed in the preset position of the mold body 5 using hexagonal screws or other methods; Subsequently, the mold insert 4 is hoisted or moved into the mounting cavity within the mold body 5, so that its side faces the upper part of the adjustable key structure already fixed to the mold body 5. At this point, due to accumulated machining errors, irregular gaps may appear between the mold insert 4 and the mold body 5 in multiple directions. The operator uses a feeler gauge to measure the actual gap value between the side of the insert and the contact surface of the upper part 1 of the adjustable key.

[0039] Based on the measurement results, the gap needs to be adjusted. The operator uses a wrench to loosen the fastening screws connecting the upper and lower adjustable key 1. After the screws are loosened, the locking force between the upper and lower parts is released, but due to the presence of the guide structure, the upper part will not fall off or experience significant misalignment. The operator can use a copper rod or nylon hammer to gently tap the mold insert 4. The movement of the insert will cause the upper adjustable key 1, which is in close contact with its side, to slide slightly along the slide bar 21 on the lower part. This sliding process is continuous and precisely controllable. The upper part will move smoothly along the guide structure of the lower part until the mold insert 4 is adjusted to the ideal design position. At this point, the gap should be measured again with a feeler gauge and should meet the range required by the drawing.

[0040] Once the gap is adjusted to the required level, the operator uses a torque wrench to retighten the previously loosened screws to the specified torque value. As the screws are tightened, their heads press against the lower part 2 of the adjustable key, while the threaded portion pulls the upper part 1 of the adjustable key downwards, firmly uniting the two parts and securing the mold insert 4 tightly in its final position. In this way, the previously existing assembly gap is precisely eliminated, and the mold insert 4 is reliably and stably fixed within the mold body 5. The entire adjustment process requires no shims or irreversible operations such as welding repairs, significantly improving assembly efficiency and precision, and facilitating future mold maintenance and readjustment.

[0041] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An adjustable key structure, characterized in that, include: Adjustable upper part of the backrest (1) and adjustable lower part of the backrest (2); The top of the adjustable key (1) is provided with a screw hole (12) facing downward. The top of the adjustable key lower part (2) is provided with an elliptical hole (23). The screw hole (12) corresponds to the central axis of the elliptical hole (23), and the screw hole (12) and the elliptical hole (23) remain fixed when the fastener (3) is tightened by the fastener (3); The upper part (1) and the lower part (2) of the adjustable key are combined with the screw hole (12) and the elliptical hole (23) by fastener (3) to form a whole; The upper part (1) and the lower part (2) of the adjustable key are provided with mutually cooperating guide structures on their contact surfaces.

2. The adjustable key structure according to claim 1, characterized in that: The guide structure includes a slider (21) and a limiting groove (13). The slider (21) is adapted to the limiting groove (13) to assist the upper part (1) of the adjustable key and the lower part (2) of the adjustable key in sliding contact.

3. The adjustable key structure according to claim 1, characterized in that: The adjustable key upper part (1) includes an upper body (11) for engaging with the mold insert (4).

4. The adjustable key structure according to claim 2, characterized in that: The limiting groove (13) is provided on the upper body (11) and is distributed in a mirror image with screw holes (12).

5. The adjustable key structure according to claim 2, characterized in that: The adjustable lower part (2) includes a lower body (22), and the slider (21) is disposed above the lower body (22). There are two sliders (21), and the two sliders (21) are mirrored with elliptical holes (23).

6. A mold assembly structure configured with an adjustable key structure as described in any one of claims 1-5, comprising a mold body (5) and a mold insert (4) disposed on one side, characterized in that, At least one adjustable key structure is provided between the mold body (5) and the mold insert (4).

7. A mold assembly structure according to claim 6, characterized in that: The lower part (2) of the adjustable key is fixed to the mold body (5), and the upper part (1) of the adjustable key abuts against the mold insert (4); By loosening the fastener (3), the position of the upper part (1) of the adjustable key relative to the lower part (2) of the adjustable key is adjusted, thereby adjusting the assembly gap between the mold insert (4) and the mold body (5).

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