Double-color watchband forming mold assembly

Abstract

The utility model discloses a double-color watchband forming mold assembly. The double-color watchband forming mold assembly comprises a first mold core, a middle plate matched with the first mold core for use and a second mold core matched with the middle plate for use, the middle plate is buckled with the first mold core for use, and a cavity matched with a first injection product is defined by the middle plate and the first mold core; a cavity which is integrally matched with the watchband is defined between the second mold cavity and the middle plate; when the double-color watchband is formed, a first injection semi-finished product can be formed through the cooperation of the middle plate and the first mold core, then the first injection semi-finished product and the middle plate are taken down together, and a finished product is formed through the cooperation of the middle plate and the second mold core. In the forming process, the semi-finished product does not need to be taken down and placed again, the situation that the semi-finished product shifts is avoided, the position precision is guaranteed, the situation that color crossing occurs in the two-shot forming process is avoided, and the overall machining quality and the qualified rate of products are guaranteed.

Description

Two-color watch strap molding die assembly Technical Field

[0001] This utility model relates to the field of watch strap technology, and in particular to a two-color watch strap molding mold assembly. Background Technology

[0002] A wristwatch, also known as a wristwatch, is a portable timepiece worn on the body. With the development of technology, the emergence of smartwatches has expanded the function of watches beyond simply telling time, providing greater convenience to people's daily lives. In addition to its basic functions, a watch also serves a decorative purpose, with people wearing different types of watches according to their personal preferences. Furthermore, the watch strap is an important component for wearing a watch, and people often choose different styles of straps to further enhance its decorative appeal.

[0003] To further enhance the decorative performance of watch straps, a two-tone strap has emerged. Current two-tone strap manufacturing processes require first injection molding of the first color using a first mold, then removing the molded strap and placing it in a second mold for a second injection molding of the second color. This molding method, due to the need to move the first-injection molded strap, cannot guarantee the accuracy of its position when placing it into the second mold. Therefore, color bleeding is prone to occur during the second injection molding, affecting the product's yield rate. Thus, it is necessary to further improve the existing watch strap mold structure. Summary of the Invention

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a two-color watch strap forming mold assembly, which can effectively solve the problems of existing watch strap forming molds being unable to guarantee the placement accuracy of semi-finished products, being prone to color bleeding, and having a low product qualification rate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A two-tone watch strap molding die assembly includes a first die core, a middle plate that mates with the first die core, and a second die core that mates with the middle plate. The upper surface of the first die core has a first mold cavity with an upper opening. The middle plate is fastened to the first die core and forms a cavity with the first die core to mate with a packaged product. The upper surface of the second die core has a second mold cavity with an upper opening, and the second mold cavity and the middle plate form a cavity to mate with the watch strap as a whole. Adaptor heads are provided on both sides of the second die core, and the adapter heads and the second mold cavity form a cavity to mate with the watch strap's end links.

[0007] As a preferred option, the first mold cavity is a plurality of arrayed cavities, and correspondingly, the second mold cavity is also a plurality of arrayed cavities.

[0008] As a preferred option, the middle plate has a first injection port that connects to the first mold cavity.

[0009] As a preferred option, the second mold core has a second injection port that connects to the second mold cavity.

[0010] As a preferred embodiment, the upper surface of the first mold core is provided with a first positioning groove, the middle plate is integrally provided with a positioning part that mates with the first positioning groove, and the upper surface of the second mold core is provided with a second positioning groove that mates with the positioning part.

[0011] As a preferred embodiment, the side wall of the second mold core is provided with a groove that connects to the second mold cavity, and the adapter head cooperates with the groove and moves obliquely along the groove to the side of the second mold cavity.

[0012] As a preferred embodiment, the adapter head moves back and forth to the side of the second mold cavity via a sliding block. The outer side of the adapter head is provided with a movable part extending obliquely. The sliding block is arranged laterally back and forth on the outer side of the adapter head under the drive of an external driving mechanism. The sliding block is provided with a movable groove that cooperates with the movable part. The adapter head moves outward and obliquely downward away from the second mold cavity as the sliding block moves outward.

[0013] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0014] The middle plate engages with the first mold core, forming a cavity between them to fit the first-shot product. The second mold cavity, also formed with the middle plate, creates a cavity to fit the entire watch strap. This allows for two-color watch strap molding where a semi-finished product is first formed using the middle plate and the first mold core. Then, the semi-finished product and the middle plate are removed together, and the finished product is formed using the middle plate and the second mold core. This eliminates the need to remove and reposition the semi-finished product during molding, preventing displacement, ensuring positional accuracy, preventing color bleeding during the second-shot molding process, and guaranteeing overall processing quality and product yield.

[0015] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the first usage state of a preferred embodiment of the present invention;

[0017] Figure 2 is a three-dimensional structural diagram of the first mold core in a preferred embodiment of the present invention;

[0018] Figure 3 is a three-dimensional structural diagram of the middle plate in a preferred embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of the second usage state of a preferred embodiment of the present invention;

[0020] Figure 5 is a schematic diagram of the exploded state of the second template of the preferred embodiment of this utility model.

[0021] Explanation of reference numerals in the attached diagram:

[0022] 10. First mold core; 101. First mold cavity

[0023] 102. First positioning slot 20, middle plate

[0024] 201, First injection port; 21, Positioning section

[0025] 30. Second mold core; 301. Second mold cavity

[0026] 302, Second injection port; 303, Second positioning groove

[0027] 304, slide rail; 305, movable groove

[0028] 31. Adapter head 311. Activity Department

[0029] 32. Slide. Detailed Implementation

[0030] Please refer to Figures 1 to 5, which show the specific structure of a preferred embodiment of the present invention, including a first mold core 10, a middle plate 20 used in conjunction with the first mold core 10, and a second mold core 30 used in conjunction with the middle plate 20.

[0031] The first mold core 10 has a first mold cavity 101 with an upper opening on its upper surface; in this embodiment, there are multiple first mold cavities 101 arranged in an array. The first mold core 10 has a first positioning groove 102 on its upper surface.

[0032] The middle plate 20 is fastened to the first mold core 10 and forms a cavity between them to mate with the first mold core 10; a semi-finished product is injection molded through the mating of the middle plate 20 and the first mold core 10. The middle plate 20 has a first injection port 201 communicating with the first mold cavity 101, through which the semi-finished product is injection molded. The middle plate 20 also has an integrally protruding positioning part 21 that mates with the first positioning groove 102; the mating of the positioning part 21 with the first positioning groove 102 achieves the mating between the middle plate 20 and the first mold core 10.

[0033] The second mold core 30 has a second mold cavity 301 with an upper opening on its upper surface. The second mold cavity 301 and the middle plate 20 form a chamber that fits integrally with the watch strap. The watch strap is injection molded by the cooperation of the second mold core 30, the middle plate 20, and the semi-finished product in the middle plate 20. Adapter heads 31 are provided on both sides of the second mold core 30. The adapter heads 31 and the second mold cavity 301 form a chamber that fits with the end links of the watch strap. The adapter heads 31 are used to form the end link structure of the watch strap. In this embodiment, multiple second mold cavities 301 are arranged in an array. Multiple first mold cavities 101 and multiple second mold cavities 301 are used to simultaneously perform the molding process of multiple watch straps, ensuring the efficiency of watch strap processing. The second mold core 30 has a second injection port 302 that connects to the second mold cavity 301. The watch strap is molded through the second injection port 302. The upper surface of the second mold core 30 is provided with a second positioning groove 303 that mates with the positioning part 21. The engagement between the middle plate 20 and the second mold core 30 is achieved through the engagement of the second positioning groove 303 and the positioning part 21. The side wall of the second mold core 30 is provided with a sliding groove 304 that communicates with the second mold cavity 301. The adapter head 31 engages with the sliding groove 304 and moves obliquely along the sliding groove 304 to the side of the second mold cavity 301. The oblique downward movement facilitates the material removal process between the adapter head 31 and the watch strap rubber particles. The adapter head 31 moves back and forth beside the second mold cavity 301 through a sliding block 32. The outer side of the adapter head 31 is provided with a movable part 311 extending obliquely. The sliding block 32 is arranged laterally back and forth outside the adapter head 31 under the drive of an external driving mechanism. The sliding block 32 is provided with a movable groove 305 that cooperates with the movable part 311. The adapter head 31 moves outward and obliquely downward away from the second mold cavity 301 as the sliding block 32 moves outward.

[0034] The key design feature of this invention is that the middle plate engages with the first mold core, forming a cavity between them that fits with the first injection molded product; and the second mold cavity, in conjunction with the middle plate, forms a cavity that fits with the entire watch strap. This allows for the following process during two-color watch strap molding: first, a semi-finished product is formed by the engagement of the middle plate and the first mold core; then, the semi-finished product and the middle plate are removed together, and the finished product is formed by the engagement of the middle plate and the second mold core. This eliminates the need to remove and reposition the semi-finished product during the molding process, preventing displacement and ensuring positional accuracy. It also prevents color bleeding during the second injection molding process, guaranteeing overall processing quality and product yield.

[0035] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A two-color watchband forming mold assembly characterized by: The device includes a first mold core, a middle plate that works with the first mold core, and a second mold core that works with the middle plate. The upper surface of the first mold core has a first mold cavity with an upper opening. The middle plate is fastened to the first mold core and forms a cavity with the first mold core to fit with a shot product. The upper surface of the second mold core has a second mold cavity with an upper opening. The second mold cavity and the middle plate form a cavity to fit with the watch strap as a whole. Adaptor heads are provided on both sides of the second mold core. The adapter heads and the second mold cavity form a cavity to fit with the watch strap's end links.

2. The two-color watchband forming mold assembly according to claim 1, characterized by: The first mold cavity consists of multiple cavities arranged in an array, and correspondingly, the second mold cavity also consists of multiple cavities arranged in an array.

3. The two-tone watch strap molding die assembly according to claim 1, characterized in that: The middle plate has a first injection port that connects to the first mold cavity.

4. The two-color watchband forming mold assembly according to claim 1, characterized by: The second mold core has a second injection port that connects to the second mold cavity.

5. The two-tone watch strap molding die assembly according to claim 1, characterized in that: The upper surface of the first mold core is provided with a first positioning groove, and the middle plate is integrally provided with a positioning part that cooperates with the first positioning groove. The upper surface of the second mold core is provided with a second positioning groove that cooperates with the positioning part.

6. The two-tone watch strap molding die assembly according to claim 1, characterized in that: The side wall of the second mold core is provided with a groove that connects to the second mold cavity. The adapter head cooperates with the groove and moves obliquely along the groove to the side of the second mold cavity.

7. The two-tone watch strap molding die assembly according to claim 6, characterized in that: The adapter head moves back and forth to the side of the second mold cavity via a sliding block. The outer side of the adapter head is provided with a movable part extending diagonally. The sliding block is arranged laterally back and forth on the outer side of the adapter head under the drive of an external driving mechanism. The sliding block is provided with a movable groove that cooperates with the movable part. The adapter head moves outward and diagonally downward away from the second mold cavity as the sliding block moves outward.

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