A watchband mold and a watchband forming method

Abstract

This application discloses a watch strap mold and a watch strap forming method, comprising: an upper mold with an upper cavity; a lower mold with a lower cavity; and an auxiliary forming component including a fixing block, a positioning block, and a rubber granule. The positioning block is fixed to the fixing block and is fixed between the upper and lower molds via the fixing block. The rubber granule is detachably connected to the positioning block and has a positioning hole for the watch strap buckle to be inserted. The upper and lower mold cavities together form a cavity for forming the watch strap, with the rubber granule located at one end of the cavity. The rubber granule, together with the upper and lower molds, surrounds the forming cavity. By using the rubber granule in the auxiliary forming component in the watch strap mold to position and install the watch strap buckle, and by having the rubber granule, together with the upper and lower molds surround the forming cavity, the watch strap buckle can withstand the impact of the raw material during the watch strap forming process, preventing displacement and thus improving the yield rate of watch straps with buckles.

Description

Technical Field

[0001] This application relates to the field of watch strap processing technology, specifically to a watch strap mold and a watch strap forming method. Background Technology

[0002] In the field of smart wearable devices, rubber watch straps are widely used in various smartwatches, bracelets, and other products due to their softness, comfort, and wear resistance. To achieve a detachable connection between the strap and the watch body, a metal buckle is usually embedded within the rubber strap. Currently, the industry generally uses a one-piece molding process to manufacture such products. This involves pre-inserting the metal buckle into a mold cavity, and then applying pressure and temperature to bond and solidify the rubber material with the metal buckle, thus forming an integral structure. In watch straps manufactured using traditional molding methods, due to limitations in mold structure design or positioning tooling, the metal buckle often cannot maintain an absolutely stable position during the molding process. This results in significant deviations between the height or angle of the buckle protruding from the strap surface and the designed dimensions. Furthermore, improper control of the gap between the buckle and the cavity can cause rubber material to overflow, forming a large amount of burrs and other excess rubber on the buckle surface. This increases the labor costs of subsequent finishing processes and may even lead to the buckle sinking or excessive rubber filling, causing the metal buckle to be completely embedded in the rubber material, resulting in the buckle losing its connecting function and rendering the product unusable. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a watch strap mold that can improve the manufacturing precision of watch strap forming, thereby increasing the product yield.

[0004] This application also proposes a method for forming watch straps.

[0005] According to one embodiment of this application, a watch strap mold includes: an upper mold with an upper mold cavity; a lower mold with a lower mold cavity; and an auxiliary molding assembly including a fixing block, a positioning block, and a rubber granule. The positioning block is fixed to the fixing block and is fixed between the upper mold and the lower mold via the fixing block. The rubber granule is detachably connected to the positioning block and has a positioning hole for a watch strap buckle to be inserted into. The upper mold cavity and the lower mold cavity together form a cavity for molding the watch strap, and the rubber granule is located at one end of the cavity. The rubber granule, the upper mold, and the lower mold together surround the cavity.

[0006] According to one embodiment of this application, the fixing block further includes a fastening bolt. The fixing block has a fixing hole and a threaded hole adapted to the fastening bolt. The threaded hole communicates with the fixing hole. The positioning block extends into the fixing hole, and the fastening bolt extends into the fixing hole through the threaded hole and abuts against the positioning block.

[0007] According to one embodiment of this application, the lower mold is provided with a fixing groove, which includes a first fixing groove and a second fixing groove that are interconnected. The first fixing groove is connected to the cavity through the second fixing groove. A fixing block is disposed in the first fixing groove, and a positioning block is disposed in the second fixing groove.

[0008] According to one embodiment of this application, the fixing block is pre-embedded in the first fixing groove, the rubber granules are installed to the positioning block manually or automatically by machine, and the positioning block is installed to the fixing block manually or automatically by machine.

[0009] According to one embodiment of this application, a limiting part is provided on the positioning block, and the fixing groove further includes a limiting groove, and the positioning block is embedded into the limiting groove through the limiting part.

[0010] According to one embodiment of this application, the granule is provided with a connecting hole, and the positioning block is provided with a connecting part, and the granule is placed in the connecting part through the connecting hole.

[0011] According to one embodiment of this application, the rubber granules are inclined relative to the horizontal plane and the positioning holes face the cavity, so that the watch strap buckle that is snapped into the positioning holes extends into the cavity.

[0012] According to one embodiment of this application, the cavity wall of the lower mold cavity near the positioning block is inclined relative to the horizontal plane toward the positioning block.

[0013] According to one embodiment of this application, multiple upper mold cavities and multiple lower mold cavities are provided, and the number of upper mold cavities and lower mold cavities is the same. Multiple positioning blocks and multiple plastic granules are provided accordingly. The fixing block is placed horizontally in the middle between the upper mold and the lower mold. Multiple upper mold cavities are symmetrical about the fixing block and are provided on opposite sides of the fixing block. Multiple lower mold cavities are symmetrical about the fixing block and are provided on opposite sides of the fixing block.

[0014] According to another embodiment of this application, the watch strap molding method using the above-mentioned watch strap mold includes the following steps: fixing a positioning block to a fixing block; inserting a watch strap buckle into a rubber granule; installing the rubber granule onto the positioning block; placing the fixing block on the lower mold; placing high-temperature raw material into the lower mold cavity; starting a drive device to close the upper and lower molds; maintaining high temperature and high pressure to mold the watch strap; starting a drive device to open the upper and lower molds; removing the molded watch strap and removing excess scrap.

[0015] The watch strap molding die according to the embodiments of this application has at least the following beneficial effects: An auxiliary molding component is provided in the watch strap mold. The auxiliary molding component includes a fixing block, a positioning block, and a rubber granule. The fixing block fixes the positioning block between the upper mold and the lower mold. The rubber granule is detachably installed on the positioning block. The rubber granule serves as the cavity wall of the cavity and together with the upper mold and the lower mold, forms the cavity. The positioning hole on the rubber granule is used to snap on the watch strap buckle, so that the watch strap buckle can resist the impact of the raw material during the watch strap molding process and avoid displacement, thereby improving the yield of watch straps with watch strap buckles.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a top view of the lower mold of the watch strap mold in this application; Figure 2 for Figure 1 A schematic diagram of the structure of a single lower mold cavity and auxiliary molding components; Figure 3 for Figure 2 Explosion diagram of the middle structure; Figure 4 for Figure 2 A schematic diagram of the middle structure omitting the lower mold; Figure 5 for Figure 4 A schematic diagram of the structure from another perspective; Figure 6 This is a structural diagram of the rubber granules and the watch strap fastener.

[0018] Figure label: 10. Watch strap buckle; 100. Lower mold; 110. Lower mold cavity; 120. Fixing groove; 121. First fixing groove; 122. Second fixing groove; 123. Limiting groove; 200. Auxiliary molding component; 210. Fixing block; 211. Fixing hole; 212. Threaded hole; 220. Positioning block; 221. Connecting part; 222. Limiting part; 230. Plastic pellet; 231. Positioning hole; 232. Connecting hole. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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, they should not be construed as limitations on this application.

[0021] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] One embodiment of this application discloses a watch strap mold; please refer to [link / reference needed]. Figure 1 It includes an upper mold (not shown in the figure), a lower mold 100, and an auxiliary molding component 200. The upper mold has 14 upper mold cavities, and the lower mold 100 has 14 lower mold cavities 110. When the upper mold and the lower mold 100 are closed, the upper mold cavities and the lower mold cavities 110 together form 14 cavities for forming watch straps. The cavities shape the raw materials, thereby producing 14 watch straps at once.

[0025] Of course, the number of the upper and lower mold cavities 110 mentioned above is not limited to... Figure 1 The limit is 14 items. Those skilled in the art can make corresponding adjustments according to the actual situation, which will not be elaborated here.

[0026] In some embodiments, see Figure 1 and Figure 2The watch strap mold also includes an auxiliary molding component 200, which includes a fixing block 210 disposed on the lower mold 100. When the upper and lower molds 100 are closed, the fixing block 210 is confined between the upper and lower molds 100. It can be understood that a structure for precisely accommodating the fixing block 210 can be obtained by machining the upper and lower molds 100. The auxiliary molding component 200 also includes several positioning blocks 220, to... Figure 2 Taking a single lower mold cavity 110 and a single positioning block 220 as an example, the positioning block 220 is fixedly connected to the fixing block 210. A rubber granule 230 is detachably installed at one end of the positioning block 220 extending toward the lower mold cavity 110. The rubber granule 230 extends into the lower mold cavity 110 and serves as the cavity wall in the watch strap molding process to limit the flow space of the raw material for molding the watch strap.

[0027] Furthermore, such as Figure 6 As shown, the rubber granule 230 is provided with a positioning hole 231, which is used to engage the watch strap buckle in the watch strap to be formed. In this way, the watch strap buckle is stably fixed in the cavity by the rubber granule 230 and the positioning and fixing parts of the positioning rubber granule 230. Therefore, during the forming process of the watch strap, the impact force exerted on the watch strap buckle by the raw material under high temperature and high pressure in the cavity cannot cause the position of the watch strap buckle to deviate, thereby improving the yield of the formed watch strap.

[0028] Additionally, it is worth noting that the part of the watch strap buckle that is attached to the connection hole 232 of the rubber granule 230 in this application is used to connect the watch strap to the watch body after molding. During the watch strap molding process, this part of the area is tightly attached and wrapped by the connection of the rubber granule 230. Therefore, in the final product, the surface of this part of the area is smooth and no further manual trimming is required, which reduces labor costs and improves productivity.

[0029] It should be noted that during the strap molding process, the raw material applies an impact force towards the rubber granule 230 to the strap buckle under high temperature and high pressure. This impact force is just enough to press the strap buckle tightly against the rubber granule 230, thereby ensuring that the part of the strap buckle used to connect to the watch body can remain sealed.

[0030] It is understood that the watch strap mold of this application can be an injection mold or a rubber mold. This application aims to solve the technical problem that the watch strap buckle is prone to displacement or falling off during the molding process. There is no limitation on the mold form, as long as the rubber part 230 can accurately limit the watch strap buckle and lock the watch strap buckle under the action of high temperature and high pressure raw materials.

[0031] In some embodiments, see Figure 2 and Figure 4The fixing block 210 has a fixing hole 211 perpendicular to its extension direction. The cross section of the positioning block 220 perpendicular to its extension direction is adapted to the cross section of the fixing hole 211. That is, the positioning block 220 extends into the fixing hole 211 along its extension direction, thereby realizing the cooperation between the positioning block 220 and the fixing block 210.

[0032] Furthermore, the fixing block 210 is provided with a threaded hole 212 and a corresponding fastening bolt. The threaded hole 212 is connected to the fixing hole 211. When the positioning block 220 extends into the fixing hole 211 of the fixing block 210, the fastening bolt is tightened in the direction of the fixing hole 211 and abuts against the positioning block 220, thereby fixing the positioning block 220 to the fixing block 210.

[0033] In some embodiments, such as Figure 3 As shown, the lower mold 100 has a fixing groove 120, which includes a first fixing groove 121 and a second fixing groove 122 that are interconnected. The second fixing groove 122 is connected to the lower mold cavity 110, or in other words, to the mold cavity. The first fixing groove 121 is parallel to the extension direction of the fixing block 210, and the shape and size of the cross-section of the first fixing groove 121 are adapted to the shape and size of the cross-section of the fixing block 210. The second fixing groove 122 is parallel to the extension direction of the positioning block 220, and the shape and size of the cross-section of the second fixing groove 122 are adapted to the shape and size of the cross-section of the positioning block 220. Thus, the fixing block 210 and the positioning block 220 are respectively embedded in the lower mold 100 through the first fixing groove 121 and the second fixing groove 122.

[0034] Furthermore, such as Figure 2 and 3 As shown, the positioning block 220 also has a limiting part 222 protruding on its lower side. Correspondingly, the fixing hole 211 of the fixing block 210 is adjusted to accommodate the limiting part 222. The fixing groove 120 also includes a limiting groove 123, which is opened below the second fixing groove 122. When the positioning block 220 extends into the second fixing groove 122, the limiting part 222 of the positioning block 220 extends into the limiting groove 123.

[0035] Understandably, if the positioning block 220 is installed incorrectly, causing the granule 230 to extend into the cavity, the watch strap buckle fixed to the granule 230 may extend too far into the cavity, ultimately resulting in the watch strap buckle being buried by the material or its position being misaligned. If the positioning block 220 fails to be properly positioned so that the granule 230 does not close the cavity, a gap will appear between the watch strap buckle and the granule 230, causing material to overflow and affecting the structural integrity of the watch strap buckle and the watch strap being molded together. In other words, the positioning block 220 is positioned in the second fixing groove 122 by the limiting groove 123, ensuring the accuracy of the positioning block 220's position and thus guaranteeing the yield rate of the molded watch strap.

[0036] Of course, the aforementioned limiting part 222 is disposed on the lower side of the positioning block 220, and the limiting groove 123 is also disposed below the second fixing groove 122. Those skilled in the art can, according to actual needs, dispose of the limiting part 222 on other side walls of the positioning block 220 and adjust the position of the limiting groove 123 accordingly. This can also achieve the effect of ensuring the position accuracy of the positioning block 220 as required by this application. Therefore, it will not be elaborated here.

[0037] In some embodiments, such as Figure 3 and Figure 6 As shown, the granule 230 has a connecting hole 232, and the positioning block 220 has a connecting part 221. The granule 230 is placed in the connecting part 221 through the connecting hole 232, thereby realizing the detachable connection between the granule 230 and the positioning block 220.

[0038] Furthermore, such as Figure 2 and Figure 5 As shown, the rubber granule 230 is inclined relative to the horizontal plane and the positioning hole 231 faces the cavity, so that the watch strap buckle 10, which is inserted into the positioning hole 231, extends into the cavity. Correspondingly, the cavity wall of the lower mold cavity 110 near the positioning block 220 is inclined relative to the horizontal plane towards the positioning block 220. In other words, the watch strap formed in this way forms a naturally inclined arc transition at the opening of the watch strap, which conforms to the curve of the human wrist to improve wearing comfort.

[0039] The auxiliary molding component 200 in the watch strap mold of this application will be described below from a top view of the entire lower mold 100, such as... Figure 1 As shown, the fixing block 210 is placed horizontally in the middle of the lower mold 100. Each of the fourteen lower mold cavities 110 is axially symmetrical about the extension direction of the fixing block 210 and positioned on opposite sides of the fixing block 210. Therefore, please combine... Figure 1 , Figure 2 and Figure 3 As shown, only one fixing block 210 is required, and seven fixing holes 211 formed as through holes are provided on the fixing block 210. A positioning block 220 is provided in each fixing hole 211. Both ends of the positioning block 220 along the extension direction are provided with connecting parts 221 for connecting the rubber granules 230, thereby achieving precise positioning of a total of fourteen sets of rubber granules 230 and fourteen sets of watch strap buckles, corresponding to fourteen cavities. Thus, the mold can simultaneously form fourteen watch straps with high quality, avoiding defects such as watch strap buckle position misalignment and overflow at the part of the watch strap buckle connecting to the watch body. This improves the yield rate of watch strap forming while also ensuring the production efficiency of watch strap forming.

[0040] This application also discloses a method for forming a watch strap, using the aforementioned watch strap mold. Please refer to [link to relevant documentation]. Figures 1 to 6The method specifically includes the following steps: Insert the positioning block 220 into the fixing hole 211 of the fixing block 210, and use the fastening bolt to screw into the threaded hole 212 to hold the positioning block 220 in place, so as to fix the positioning block 220 to the fixing block 210. Insert the part of the watch strap buckle 10 used to connect to the watch body into the positioning hole 231 of the rubber pellet 230; Align the connecting hole 232 of the granule 230 and place it on the connecting part 221 of the positioning block 220 to install the granule 230 onto the positioning block 220. When the fixing block 210 is placed on the first fixing groove 121 of the lower mold 100, the positioning block 220 is simultaneously placed on the second fixing groove 122 of the lower mold 100, and the limiting part 222 at the bottom of the positioning block 220 is simultaneously prevented from being placed in the limiting groove 123 of the lower mold 100. The high-temperature raw materials are placed in fourteen lower mold cavities 110 respectively; Start the drive unit to close the upper and lower molds at 100°. Maintain high temperature and pressure to shape the watch strap; Start the drive unit to open the upper and lower molds by 100 degrees; Remove the finished watch strap and trim off any excess material.

[0041] It should be noted that before fixing the positioning block 220 to the fixing block 210 with the fastening bolts, the positioning block 220 should be inserted into the fixing hole 211 of the fixing block 210, and then the fixing block 210 should be placed on the first fixing groove 121 of the lower mold 100. Correspondingly, the positioning block 220 should enter the second fixing groove 122 at the same time. At this time, the limiting part 222 at the bottom of the positioning block 220 may not be accurately aligned with the limiting groove 123 of the lower mold 100. At this time, the relative position relationship between the positioning block 220 and the fixing block 210 needs to be finely adjusted until the limiting part 222 is completely embedded in the limiting groove 123. Then tighten the fastening bolts so that the fastening bolts abut against the positioning block 220, thereby ensuring the positional accuracy of the positioning block 220.

[0042] It is understood that the aforementioned fixing block 210 is pre-embedded in the first fixing groove 121, and the granule part 230 is installed to the positioning block 220 by manual or automatic machine, and the positioning block 220 is installed to the fixing block 210 by manual or automatic machine.

[0043] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A watchband mold characterized by, include: The upper mold has an upper mold cavity; The lower mold has a lower mold cavity; An auxiliary molding component includes a fixing block, a positioning block, and a rubber pellet. The positioning block is fixed to the fixing block and is fixed between the upper mold and the lower mold via the fixing block. The rubber pellet is detachably connected to the positioning block and has a positioning hole for a watch strap buckle to be inserted. The upper mold cavity and the lower mold cavity together form a cavity for molding the watch strap. The rubber granule is located at one end of the cavity, and the rubber granule, together with the upper mold and the lower mold, forms the cavity.

2. The watch strap mold according to claim 1, characterized in that, The fixing block also includes a fastening bolt. The fixing block has a fixing hole and a threaded hole adapted to the fastening bolt. The threaded hole communicates with the fixing hole. The positioning block extends into the fixing hole. The fastening bolt extends into the fixing hole through the threaded hole and abuts against the positioning block.

3. The watch strap mold according to claim 1, characterized in that, The lower mold has a fixing groove, which includes a first fixing groove and a second fixing groove that are interconnected. The first fixing groove is connected to the cavity through the second fixing groove. The fixing block is disposed in the first fixing groove, and the positioning block is disposed in the second fixing groove.

4. The watch strap mold according to claim 3, characterized in that, The fixing block is pre-embedded in the first fixing groove, and the granules are installed to the positioning block manually or automatically by machine. The positioning block is installed to the fixing block manually or automatically by machine.

5. The watch strap mold according to claim 3, characterized in that, The positioning block is provided with a limiting part, and the fixing groove also includes a limiting groove, and the positioning block is embedded into the limiting groove through the limiting part.

6. The watch strap mold according to claim 1, characterized in that, The granule has a connecting hole, and the positioning block has a connecting part. The granule is placed in the connecting part through the connecting hole.

7. The watch strap mold according to claim 1, characterized in that, The rubber granules are inclined relative to the horizontal plane and the positioning holes face the cavity, so that the watch strap buckle that is inserted into the positioning holes extends into the cavity.

8. The watch strap mold according to claim 7, characterized in that, The cavity wall of the lower mold cavity near the positioning block is inclined relative to the horizontal plane toward the positioning block.

9. The watch strap mold according to claim 1, characterized in that, The upper mold cavity and the lower mold cavity are each provided in multiple quantities, and the number of upper mold cavities and lower mold cavities are the same. The positioning block and the plastic granule are provided in multiple quantities accordingly. The fixing block is placed horizontally in the middle between the upper mold and the lower mold. The multiple upper mold cavities are symmetrical about the fixing block and are arranged on opposite sides of the fixing block. The multiple lower mold cavities are symmetrical about the fixing block and are arranged on opposite sides of the fixing block.

10. A method for forming a watch strap, characterized in that, Using the watch strap mold as described in any one of claims 1 to 9, the steps include: The positioning block is fixedly installed onto the fixing block; The watch strap buckle is snapped into the rubber pellet; Install the granules onto the positioning block; Place the fixing block on the lower mold; Place the raw material into the lower mold cavity; Start the drive device to close the upper mold and the lower mold; Keep the mold closed to allow the watch strap to take shape; The drive device is activated to open the upper and lower molds; Remove the finished watch strap and trim off any excess material.

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