Thermal forming die

Abstract

The invention relates to the technical field of thermal forming mold manufacturing, in particular to a thermal forming mold which comprises a lower mold insert arranged on a base plate and a positioning pin arranged on the lower mold insert and the base plate in the vertical direction. Part of the positioning pins protrude out of the upper end of the lower die insert so as to form a columnar structure used for positioning a product to be formed. And the locking assembly is connected with the base plate, the locking assembly has a locking state in which the positioning pin is locked on the lower die insert and the base plate in the horizontal direction, and the locking assembly has an unlocking state in which the locking assembly moves in the horizontal direction to release the positioning pin.

Description

Technical Field

[0001] This invention relates to the technical field of thermoforming mold manufacturing, and more specifically, to a thermoforming mold that provides a specific method. Background Technology

[0002] In existing thermoforming molds, the placement of parts on the mold is subject to fixed requirements during production. Positioning is achieved using locating pins on the thermoforming mold to meet production requirements. Currently, the traditional quick-change structure of thermoforming molds uses screws to fix the inserts on the upper side. When the locating pins need to be replaced, the replacement is cumbersome, cannot achieve quick replacement, cannot guarantee the stability of the locating pins after replacement, increases the workload, and cannot guarantee the stability of the production status after replacement, which has a significant impact on the supply of parts.

[0003] No effective solution has yet been proposed to address the above issues. Summary of the Invention

[0004] The main objective of this invention is to provide a thermoforming mold that solves the problem that the positioning pin fixing structure in the prior art cannot achieve quick replacement.

[0005] To achieve the above objectives, according to one aspect of the present invention, a thermoforming mold is provided, comprising: a lower mold insert disposed on a base plate; a locating pin disposed vertically on the lower mold insert and the base plate, wherein a portion of the locating pin protrudes from the upper end of the lower mold insert to form a columnar structure for positioning the product to be formed; and a locking assembly connected to the base plate, the locking assembly having a locked state in which the locating pin is locked on the lower mold insert and the base plate in a horizontal direction, and an unlocked state in which the locking assembly moves in a horizontal direction to release the locating pin.

[0006] Furthermore, there are multiple positioning pins, which are spaced apart along the circumference of the lower mold insert, and each positioning pin is provided with a locking component.

[0007] Furthermore, the locking assembly is disposed on the outer wall of the pad, and at least a portion of the locking assembly is located within the pad.

[0008] Further, the locking assembly includes: an insert plate connected to the pad; and a pull member, one end of which is connected to the insert plate and the other end of which is located outside the pad. Operating the pull member can move the insert plate horizontally to the locked state and the unlocked state. When the insert plate is in the locked state, its end abuts against the side wall of the positioning pin.

[0009] Furthermore, the side wall of the positioning pin is provided with an abutment groove that mates with the end of the insert plate.

[0010] Furthermore, the pad is provided with a limiting hole for accommodating part of the positioning pin, and the side wall of the limiting hole is provided with a mounting groove for installing the insert plate. The mounting groove extends horizontally, and the insert plate is movably disposed in the mounting groove.

[0011] Furthermore, a positioning hole is provided at the bottom of the end of the mounting groove away from the limiting hole, and a locking hole is provided on the insert plate for the locking member to pass through. When the pad is in the locked state, the locking member extends through the locking hole into the positioning hole to lock the insert plate onto the pad.

[0012] Furthermore, the locking element is a locking screw.

[0013] Furthermore, the pulling component is a pulling screw.

[0014] Furthermore, the locating pin is manufactured using a quenching process.

[0015] By applying the technical solution of this invention and controlling the working position of the locking component, damaged locating pins can be quickly replaced from the lower mold insert. Simultaneously, this locking component allows for rapid locking of the locating pins. The thermoforming mold employing this structure effectively improves the efficiency of locating pin replacement. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the assembled structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention after assembly;

[0019] Figure 3 This is a front view of the assembled structure of the present invention;

[0020] Figure 4 This is a cross-sectional view of the assembled structure of the present invention.

[0021] The above figures include the following reference numerals:

[0022] 1. Positioning pin; 2. Insert plate; 3. Lower mold insert; 4. Pad plate; 5. Locking component; 6. Pull-out component; 41. Limiting hole; 42. Mounting groove; 421. Positioning hole. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0027] Combination Figures 1 to 4 As shown, according to a specific embodiment of this application, a thermoforming mold is provided.

[0028] Specifically, it includes a lower mold insert 3, which is disposed on a pad 4. A positioning pin 1 is disposed vertically on the lower mold insert 3 and the pad 4, and part of the positioning pin 1 protrudes from the upper end of the lower mold insert 3 to form a columnar structure for positioning the product to be molded. A locking assembly is connected to the pad 4. The locking assembly has a locking state in which the positioning pin 1 is locked on the lower mold insert 3 and the pad 4 in the horizontal direction, and an unlocking state in which the locking assembly moves in the horizontal direction to release the positioning pin 1.

[0029] In this embodiment, the positioning pin 1 is vertically positioned on the lower mold insert 3 and the pad 4, partially protruding from the upper end of the lower mold insert 3 to form a columnar structure. This ensures precise positioning of the product to be molded within the mold, preventing movement during the molding process and guaranteeing consistent product quality and dimensions. The locking assembly is connected to the pad 4 and functions to lock the positioning pin 1 onto the lower mold insert 3 and the pad 4. In the locked state, the positioning pin 1 is horizontally locked, effectively enhancing the overall stability of the mold and preventing loosening or displacement of mold components during high-temperature and high-pressure molding, which could affect the molding effect. In the unlocked state, the locking assembly can move horizontally to release the positioning pin 1. This simplifies mold maintenance and component replacement, improving production efficiency. By controlling the working position of the locking assembly, damaged positioning pins 1 can be quickly removed from the lower mold insert 3, and the locking assembly can also quickly lock the positioning pin 1. The thermoforming mold with this structure effectively improves the efficiency of replacing positioning pins 1.

[0030] Specifically, there are multiple positioning pins 1, which are spaced apart along the circumference of the lower mold insert 3, and each positioning pin 1 is provided with a locking component.

[0031] In this embodiment, multiple locating pins 1 can accurately position the upper mold or the parts to be processed or assembled from different directions, ensuring that the relative position between the upper and lower molds or parts remains unchanged under pressure or during movement, thereby improving processing accuracy and assembly precision. The circumferential distribution of the locating pins 1 increases the stability of the overall structure, allowing for a more even distribution of force on the lower mold insert 3 during mold closure or part assembly, reducing stress concentration, extending mold life, and improving finished product quality. Especially in mold applications subjected to high pressure or impact, it can effectively prevent the lower mold insert 3 from shifting or rotating, maintaining stability during operation. Each locating pin 1 is equipped with a locking component, which allows for quick locking or releasing of the locating pin 1 when changing molds or adjusting parts, greatly improving production efficiency. This design can adjust the number and position of the locating pins 1 according to actual needs to adapt to parts or molds of different sizes and shapes, increasing the flexibility and versatility of the system.

[0032] Specifically, the locking assembly is disposed on the outer wall of the pad 4, and at least part of the locking assembly is located inside the pad 4.

[0033] In this embodiment, placing the locking component inside the pad 4 reduces the exposed parts of the overall device, making the structure more compact, saving space, and potentially reducing weight, thus improving portability. The relatively enclosed environment inside the pad 4 provides protection for the locking component, preventing direct impact or damage, extending its lifespan, and increasing security by preventing accidental unlocking or unauthorized operation. Furthermore, concealing the locking component within the pad 4 enhances the device's appearance, making it cleaner, more aesthetically pleasing, and conforming to the minimalist style of modern industrial design. The tight connection between the locking component and the pad 4, along with the design of some components being located inside the pad 4, not only ensures the stable locking of the positioning pin 1 but also reduces interference from external components, resulting in a more compact mold structure and easier operation.

[0034] Specifically, the locking assembly includes a plate 2, which is connected to a pad 4. One end of a puller 6 is connected to the plate 2, and the other end of the puller 6 is located outside the pad 4. The operation of the puller 6 can move the plate 2 horizontally to a locked state and an unlocked state. When the plate 2 is in the locked state, the end of the plate 2 abuts against the side wall of the positioning pin 1.

[0035] In this embodiment, when the insert plate 2 is in the locked state, its end is in close contact with the side wall of the positioning pin 1, effectively restricting the movement of the positioning pin 1. This ensures that the fixed component will not shake or shift due to external forces, improving the overall structural stability. By operating the pull-out piece 6, the insert plate 2 can be moved horizontally to the unlocked position for quick release. This allows users to quickly adjust or disassemble the fixed component when needed, improving convenience and efficiency. The other end of the pull-out piece 6 is designed on the outside of the pad 4, allowing users to directly access it and operate it without additional tools, making the locking and unlocking process more intuitive and easier to operate. The linkage mechanism between the insert plate 2 and the pull-out piece 6 can prevent accidental unlocking to a certain extent, because unless the pull-out piece 6 is intentionally operated, the insert plate 2 is not easily moved out of the locked position, ensuring the safe operation of the equipment. By moving the insert plate 2 horizontally through the pull-out piece 6, the locking and releasing process of the positioning pin 1 is automated, simplifying operation and improving the efficiency and safety of the mold.

[0036] Specifically, the side wall of the positioning pin 1 is provided with an abutment groove that matches the end of the insert plate 2.

[0037] In this embodiment, the abutment groove provides a clear alignment reference for the insert plate 2, enabling it to be accurately inserted into the predetermined position in the positioning pin 1. When the insert plate 2 is fully inserted and abuts against the abutment groove of the positioning pin 1, a stable connection is formed between the two, helping to prevent loosening or misalignment during use and improving the overall structural stability. The abutment groove design allows the insert plate 2 to be easily installed on the positioning pin 1, while also simplifying the disassembly process and facilitating maintenance and component replacement. By setting specific abutment points, unnecessary friction or wear on the positioning pin 1 or other components during insertion or removal of the insert plate 2 can be avoided, extending the service life of the equipment.

[0038] Specifically, the pad 4 has a limiting hole 41 for accommodating the positioning pin 1, and the side wall of the limiting hole 41 has a mounting groove 42 for mounting the insert plate 2. The mounting groove 42 extends horizontally, and the insert plate 2 is movably disposed in the mounting groove 42.

[0039] In this embodiment, the limiting hole 41 on the pad 4 is used to accommodate a portion of the positioning pin 1. Through the engagement of the positioning pin 1, the pad 4 can be precisely aligned with other parts, ensuring accurate relative positions of all components during assembly. The engagement of the positioning pin 1 with the limiting hole 41, combined with the movable arrangement of the insert plate 2 within the mounting groove 42, forms a robust locking mechanism. When the insert plate 2 is inserted into the mounting groove 42 and the positioning pin 1 is fixed, the overall structural stability is enhanced, preventing component displacement due to vibration or external force. The movable arrangement of the insert plate 2 means it can be easily inserted into or removed from the mounting groove 42 when needed, making component assembly and disassembly more convenient and reducing maintenance and repair difficulties. The horizontally extending mounting groove 42 allows the insert plate 2 to move within a certain range, meaning that in certain application scenarios, the connection between the pad 4 and the positioning pin 1 can be fine-tuned to adapt to different installation requirements or environmental changes. The design of the limiting hole 41 and the mounting groove 42 reduces wear on the positioning pin 1 and the insert plate 2 during use, extending their service life. At the same time, this design also helps protect other parts from damage caused by inaccurate positioning.

[0040] Specifically, a positioning hole 421 is provided at the bottom of the end of the mounting groove 42 away from the limiting hole 41. The insert plate 2 has a locking hole for the locking member 5 to pass through. When the pad 4 is in the locked state, the locking member 5 extends through the locking hole into the positioning hole 421 to lock the insert plate 2 onto the pad 4. In this embodiment, after the locking member 5 is inserted into the positioning hole 421, the connection between the insert plate 2 and the pad 4 is more stable, preventing loosening or detachment due to external forces or vibration. The design of the positioning hole 421 and the locking hole ensures the positional accuracy of the insert plate 2 relative to the pad 4, enabling the equipment or structure to meet the expected design requirements during assembly. This locking structure allows the insert plate 2 to be quickly unlocked and disassembled when needed, facilitating maintenance and replacement, and also simplifying equipment debugging and adjustment. The locking member 5 not only fixes the insert plate 2 but also prevents unauthorized personnel from disassembling or adjusting it arbitrarily, increasing equipment security. By adjusting the positional relationship between the positioning hole 421 and the locking hole, it can be applied to insert plates 2 of different sizes and shapes, thus improving the versatility and flexibility of the overall structure.

[0041] Specifically, locking component 5 is a locking screw.

[0042] In this embodiment, locking screws can tightly connect two or more components together, preventing relative movement during operation and ensuring the stability and safety of equipment operation. The use of locking screws provides a reliable fixing method, is convenient to operate and easy to adjust, and is suitable for precise adjustment and maintenance of molds.

[0043] Specifically, the puller 6 is a puller screw.

[0044] In this embodiment, the pull screw design allows for precise force control during assembly, ensuring ideal fit and strength between components and preventing damage from over-tightening or loosening from under-tightening. The pull screw can be reused multiple times without damage, which is very helpful in reducing costs and improving material utilization, especially when assembling multi-piece structures. As the pull component 6, the pull screw, utilizing its thread characteristics, provides uniform pulling force, ensuring smooth movement of the insert plate 2 and improving the control accuracy and ease of operation of the locking assembly.

[0045] Specifically, the locating pin 1 is made by a quenching process.

[0046] In this embodiment, the locating pin 1, which is treated by quenching, has higher hardness and wear resistance. Even under long-term and high-intensity use, it can maintain its geometric shape and positional accuracy, reduce mold wear, and extend the service life of the mold.

[0047] In the embodiments of the present invention, the positional relationship of each component is detailed below. Figure 1 , Figure 3For details on the hole positions and specific locations on pad 4, please refer to [link / reference]. Figure 2 , Figure 4 .

[0048] Specifically, in view of the deficiencies in the prior art, the purpose of this invention is to provide a quick-change fixing structure for locating pins in thermoforming molds. According to this invention, the quick-change fixing structure for locating pins in thermoforming molds includes a first locating pin, a second insert plate, a third lower mold insert, and a fourth pad plate. The third lower mold insert has a locating pin mounting hole that matches the first locating pin. The fourth pad plate has a second insert plate mounting groove and a first locating pin mounting clearance hole. The first locating pin and the second insert plate are inserted and fitted together for limiting, and the second insert plate and the fourth pad plate are fitted together for locking. The first locating pin is fixed in position according to the locating pin mounting hole that matches the third lower mold insert. The positioning pin is inserted into and limited by the fourth pad; the third lower die insert is installed on the fourth pad; the second insert plate is installed on the fourth pad; the first positioning pin has a pull hole for moving along the insertion / removal direction; the second insert plate has a pull thread hole for moving along the insertion / removal slot direction; preferably, the second insert plate includes a locking screw M8X25; the second insert plate locking screw and the fourth pad are locked and fixed by a threaded connection; preferably, the first positioning pin is a positioning pin made of SKD11 material; preferably, the first positioning pin is a positioning pin that has undergone quenching treatment; preferably, the first positioning pin has a matching positioning pin mounting hole opened according to the third lower die insert for a transition fit.

[0049] Compared with the prior art, the present invention has the following advantages: The present invention uses a first positioning pin and a second insert plate for insertion and positioning, a fourth pad slot for insertion and positioning, and a second insert plate fixing member for locking with the fourth pad. If the first positioning pin needs to be replaced, the second insert plate fixing member can be removed from the fourth pad, and the second insert plate can be pulled out from the fourth pad. The first positioning pin can then be removed from the positioning pin mounting slot 42 for replacement. This makes the positioning pin easy to remove and replacement simple, reducing workload, minimizing the impact on mold use, and reducing the impact on the supply of parts. The third aspect of the present invention... The mounting hole for the mold insert locating pin and the insertion portion of the first locating pin are designed with a smooth transition fit, eliminating gaps between the mounting hole and the product. This helps protect the product's surface and does not affect the forming and quality of the part. Furthermore, this structure allows for easy insertion of the first locating pin into the mounting hole for the third lower mold insert locating pin, effectively improving the installation efficiency of the fixing structure. The insertion and limiting of the first locating pin with the second insert plate ensures stable production after pin replacement. The first locating pin is a hardened locating pin to increase its hardness and heat resistance, thus extending its service life. Other features, objects, and advantages of the invention will become more apparent from the detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0050] This invention is achieved using the following technical solution: a quick-change fixing structure for a thermoforming mold positioning pin, comprising a first positioning pin, a second insert plate, a third lower mold insert, a fourth pad plate, a second insert plate fixing component, and a second insert plate pull-out screw. This invention is not limited to the specific structural method described above; those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0051] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0052] Precise positioning and enhanced stability: The vertical placement of the positioning pin 1 on the lower mold insert and the pad 4, along with its protruding columnar structure, ensures the precise position of the product to be molded within the mold, preventing movement during the molding process and thus guaranteeing product quality and dimensional consistency. The locking and unlocking states of the locking components in the horizontal direction enhance the overall stability of the mold, preventing loosening or displacement of mold components during high-temperature and high-pressure molding, and ensuring stable molding results.

[0053] Ease of maintenance and improved production efficiency: The unlocking design of the locking component makes mold maintenance and component replacement simple. No complicated disassembly process is required. The positioning pin 1 can be easily adjusted or replaced by simply operating the pull-out part 6, which significantly improves production efficiency and reduces downtime caused by mold maintenance.

[0054] Enhanced safety: The locking and unlocking mechanism ensures the secure fixation of the positioning pin 1 during mold operation and maintenance, preventing potential injury to operators due to component loosening and reducing the risk of safety accidents.

[0055] Extended mold life and reduced costs: Precise positioning and a stable locking mechanism reduce unnecessary wear on the mold during the molding process, extend the mold's service life, and reduce production costs during long-term operation.

[0056] Increased flexibility and versatility: The adjustable and replaceable design of the locating pin 1, as well as the flexible use of the locking components, enable the mold to quickly adapt to the molding of products of different sizes and shapes, improving the flexibility and production efficiency of the production line.

[0057] Compact structure and protection mechanism: The locking component is placed inside the pad 4, which not only makes the equipment structure more compact and saves space, but also protects the locking component from direct external impact or damage, extends its service life, and enhances the safety of the equipment.

[0058] Automated operation and safety assurance: The pulling component 6 drives the insert plate 2 to move horizontally, which automates the locking and releasing process of the positioning pin 1. The operation is simple and improves the efficiency of mold use and the safety of operation.

[0059] Quick component replacement and fine-tuning capability: The design of the positioning hole 421 and the locking hole allows the insert plate 2 to be quickly unlocked and disassembled when needed, which is convenient for maintenance and replacement. It also facilitates the fine-tuning of the equipment and improves the versatility and flexibility of the overall structure, especially when it is necessary to adapt to insert plates 2 of different sizes and shapes.

[0060] Material optimization and performance enhancement: The locating pin 1, made of quenched SKD11 material, has higher hardness and wear resistance, can withstand long-term and high-intensity use, maintain its geometric shape and positional accuracy, reduce mold wear, and extend service life.

[0061] Efficient installation and stable production status: The insertion and limiting design of the positioning pin 1 and the insert plate 2, as well as the locking and fixing of the insert plate 2 and the pad plate 4, make the replacement of the positioning pin 1 simple and quick, while ensuring the stability of the production status after replacement, without affecting the forming and quality of the parts.

[0062] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0063] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0064] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A thermoforming mold, characterized in that, include: The lower mold insert (3) is disposed on the pad (4); Positioning pin (1), the positioning pin (1) is arranged vertically on the lower mold insert (3) and the pad (4), and part of the positioning pin (1) protrudes from the upper end of the lower mold insert (3) to form a columnar structure for positioning the product to be molded; The locking assembly is connected to the pad (4) and has a locking state in which the positioning pin (1) is locked on the lower mold insert (3) and the pad (4) in a horizontal direction, and an unlocking state in which the locking assembly moves in a horizontal direction to release the positioning pin (1).

2. The thermoforming mold according to claim 1, characterized in that, There are multiple positioning pins (1), and the multiple positioning pins (1) are arranged at intervals along the circumference of the lower mold insert (3), and each positioning pin (1) is provided with a locking component.

3. The thermoforming mold according to claim 1 or 2, characterized in that, The locking assembly is disposed on the outer wall of the pad (4), and at least a portion of the locking assembly is located inside the pad (4).

4. The thermoforming mold according to claim 3, characterized in that, The locking component includes: Insert plate (2), the insert plate (2) is connected to the pad plate (4); Pulling member (6), one end of which is connected to the insert plate (2), and the other end of which is located outside the pad plate (4); When the puller (6) is operated, the insert plate (2) can be moved horizontally to the locked state and the unlocked state. When the insert plate (2) is in the locked state, the end of the insert plate (2) abuts against the side wall of the positioning pin (1).

5. The thermoforming mold according to claim 4, characterized in that, The side wall of the positioning pin (1) is provided with an abutment groove that matches the end of the insert plate (2).

6. The thermoforming mold according to claim 4, characterized in that, The pad (4) has a limiting hole (41) for accommodating part of the positioning pin (1), and the side wall of the limiting hole (41) has a mounting groove (42) for installing the insert plate (2). The mounting groove (42) extends horizontally, and the insert plate (2) is movably disposed in the mounting groove (42).

7. The thermoforming mold according to claim 6, characterized in that, The mounting groove (42) has a positioning hole (421) at the bottom of the end away from the limiting hole (41). The insert plate (2) has a locking hole for the locking member (5) to pass through. When the pad plate (4) is in the locked state, the locking member (5) extends through the locking hole into the positioning hole (421) to lock the insert plate (2) onto the pad plate (4).

8. The thermoforming mold according to claim 7, characterized in that, The locking component (5) is a locking screw.

9. The thermoforming mold according to claim 4, characterized in that, The puller (6) is a puller screw.

10. The thermoforming mold according to claim 1, characterized in that, The positioning pin (1) is made by quenching process.

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