Production process of a clothing cord adjusting buckle

Abstract

The present application relates to the field of clothing accessory products, in particular to a production process of a clothing rope belt adjusting buckle, adopting the following mold structure, comprising an upper mold and a lower mold, the upper mold and the lower mold are buckled to form a cavity, a core is arranged at the joint surface of the upper mold and the lower mold, and an extension channel for the core to pass through is arranged between the upper mold and the lower mold; the production process comprises the following steps: a, before the upper mold and the lower mold are closed, each core passes through the extension channel and enters a specified position in the cavity; b, the upper mold and the lower mold are closed, and the core is extruded to fix the position and keep the cavity structure closed; c, mold casting and cooling are performed to fix the shape of the adjusting buckle; d, the core is pulled out of the mold along the extension channel to perform demolding; e, the upper mold and the lower mold are separated to unload, and the adjusting buckle is obtained. The present application solves the problem of high cost of the existing clothing rope belt adjusting buckle.

Description

Technical Field

[0001] This invention relates to the field of clothing accessories, specifically to a manufacturing process for a clothing drawstring adjustment buckle. Background Technology

[0002] Drawstrings are widely used in clothing, backpacks and other related products. They are mainly used to adjust the tightness of the area covered by the drawstring, and are used with corresponding adjustment buckles to maintain the tightness. As shown in Chinese Patent CN 210432952U, an existing cord adjustment buckle includes a base and a movable component. The base has a hollow interior forming an accommodating space, and a channel for a preset cord to pass through is provided on one side of the accommodating space. An opening for the preset cord to pass through is formed on the outward side of the channel. Through holes are respectively provided on the two outer sides of the accommodating space of the base. The movable component has a sliding seat housed in the accommodating space, and two clamping plates are arranged at intervals on one side of the sliding seat in the same direction. A clamping space is formed between the two clamping plates. A positioning body for front or back insertion is pivotally provided in the clamping space. Pushing parts exposed in the through holes are provided on opposite sides of the sliding seat to move the positioning body away from the opening to release the preset cord. An elastic element is provided between the sliding seat and the base to abut against the sliding seat, thereby reducing the distance between the positioning body and the channel and pressing it tightly onto the preset cord. This structure is complex, the installation process is rather cumbersome, it contains metal parts, and its comfort during use is insufficient. Summary of the Invention

[0003] Therefore, the present invention provides a manufacturing process for a clothing drawstring adjustment buckle, which solves the problem of high cost of existing clothing drawstring adjustment buckles.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] A manufacturing process for a clothing drawstring adjustment buckle employs the following mold structure, including an upper mold and a lower mold. The upper mold and the lower mold are fastened together to form multiple cavities corresponding to the adjustment buckle. Multiple matching cores are provided at the joint surface of the upper mold and the lower mold, extending inward from the outside of the upper mold and into each cavity. An extension channel for the cores to pass through is provided between the upper mold and the lower mold.

[0006] Its production process includes the following steps:

[0007] a. Before the upper mold and lower mold are closed, each of the cores is inserted into the designated position of the cavity through the extension channel;

[0008] b. The upper and lower molds are closed to compress the core, fixing its position and keeping the cavity structure sealed.

[0009] c. The mold is poured and cooled to fix the shape of the adjusting buckle;

[0010] d. Pull the core along the extension channel outwards from the mold to demold;

[0011] e. The upper and lower molds are separated for unloading to obtain the adjusting buckle.

[0012] Preferably, between step c and step d above, there is also step c1: the upper mold and the lower mold are separated in advance so that the adjusting buckle can deform.

[0013] Preferably, each of the cores is mounted on a drive mechanism that drives it to reciprocate along the extension channel. The drive mechanism includes a connecting plate connecting each of the cores and a cylinder assembly that drives the connecting plate toward or away from the mold.

[0014] Preferably, the mold has 5-10 cavities evenly distributed.

[0015] Preferably, the mold has 10-20 cavities, which are divided into two groups, and the corresponding cores are inserted from both sides of the mold to match the corresponding cavities.

[0016] Preferably, the surface of the upper or lower mold is provided with guide grooves for guiding and positioning each of the cores.

[0017] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0018] This technical solution incorporates the product structure and designs a corresponding mold structure. The adjusting buckle is a flat ring structure integrally injection molded from soft plastic. Its center has a rope hole for threading the two ends of the cord. Inside the rope hole are two protruding structures for securing the clothing cord. Therefore, the mold design adopts a mold-closing casting and cooling process. After the shape of the adjusting buckle is fixed, it undergoes slight deformation to demold it for production. Combined with the actual situation of the product, this greatly simplifies the production process and helps to improve production efficiency.

[0019] Before casting, the core moves to a position before the upper and lower molds close. When the upper and lower molds close, a certain amount of pressure is applied to the core, fixing its position. This ensures a tight connection between the cavity and the core, guaranteeing a sealed cavity structure and improving the uniformity of the shape of the produced adjustment buckle. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the adjusting buckle in Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the rope buckle in the extension direction of the rope hole in Embodiment 1 of the present invention;

[0022] Figure 3 This is a top view structural diagram of the rope buckle according to Embodiment 1 of the present invention;

[0023] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0024] Figure 5 This is a top view structural diagram of the lower mold in Embodiment 1 of the present invention (only one core is shown);

[0025] Figure 6 This is a cross-sectional view of the mold in Embodiment 1 of the present invention. Figure 5 (in the middle of BB direction);

[0026] Figure 7 This is a top view structural diagram of another structural mold in Embodiment 1 of the present invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of the rope buckle in Embodiment 2 of the present invention.

[0028] Reference numerals: 100, rope; 200, rope loop; 300, rope buckle; 301, rope hole; 302, protrusion; 3021, extension surface; 3022, contact point; 303, arc-shaped end; 1, upper mold; 2, lower mold; 3, cavity; 4, core; 41, guide groove; 5, extension channel; 6, connecting plate; 61, guide block. Detailed Implementation

[0029] The following will describe in detail the implementation of the present invention with reference to specific embodiments, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0030] Example 1

[0031] refer to Figures 1 to 4The specific structure of the adjustment buckle is as follows: A clothing drawstring adjustment buckle includes a drawstring 100, a drawstring loop 200, and a drawstring buckle 300. The drawstring buckle 300 is a ring-shaped structure integrally molded from soft plastic, and has a drawstring hole 301 in the center for threading through both ends of the drawstring 100. The drawstring loop 200 is sleeved on the drawstring 100 and located at the fold of the drawstring 100. The drawstring hole 301 has two protrusions 302 inside for locking the two ends of the drawstring 100. The two protrusions 302 have an extension surface 3021 that extends inward and upward from the end of the drawstring hole 301 to facilitate the threading of the drawstring 100, and an abutment point 3022 located at the end of the extension surface 3021. The abutment point 3022 on the two protrusions 302 abuts against the surface of the drawstring 100 to clamp and fix the two ends of the drawstring 100. The entire adjustment buckle is made of flexible plastic through one-piece injection molding. When used on clothing, it has no sharp edges or corners, so it will not scratch the user's skin and provides good comfort. It is also simple in structure, easy to manufacture, and low in cost. In use, both ends of the cord 100 are connected to the other side through the cord hole 301 on one side. The fold of the cord 100 is fixed with a cord loop 200. The surfaces of the cord 100 at both ends are locked together by the combined action of the protrusions 302 on both sides inside the cord hole 301 to prevent the cord 100 from coming loose. Adjustment is also simple, just by moving the cord buckle 300 to the position of the cord 100. It is easy to use. When the cord 100 is threaded, it can be gradually inserted through the inwardly extending extension surface 3021. The cord buckles 300 at both ends of the cord hole 301 are provided with inwardly curved arc-shaped openings 303, which reduces the width of the cord buckle 300, making it easier to thread the cord 100 and to grip it when threading it in.

[0032] Structurally, such as Figure 4 As shown, the two protrusions 302 are centrally symmetrically distributed along the center of the rope hole 301; the cross-section of the protrusion 302 is an isosceles triangle, and its waist extends obliquely inward and upward along the end of the rope hole 301.

[0033] A manufacturing process for a clothing drawstring adjustment buckle 100, specifically referring to the manufacturing process of the drawstring buckle 300, is described below. Figure 5 , Figure 6 As shown, the following mold structure is adopted, including an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 are fastened together to form a plurality of cavities 3 corresponding to the adjustment buckle. At the joint surface of the upper mold 1 and the lower mold 2, there are a plurality of matching cores 4 extending from the outside of the upper mold 1 and the lower mold 2 inward and extending into each cavity 3. An extension channel 5 is provided between the upper mold 1 and the lower mold 2 for the cores 4 to pass through.

[0034] Its production process includes the following steps:

[0035] a. Before the upper mold 1 and the lower mold 2 are closed, each of the cores 4 is inserted into the designated position of the cavity 3 through the extension channel 5;

[0036] b. The upper mold 1 and the lower mold 2 are closed to press the core 4 to fix its position and keep the cavity 3 structure sealed.

[0037] c. The mold is poured and cooled to fix the shape of the adjusting buckle;

[0038] d. Pull the core 4 along the extension channel 5 outwards from the mold to demold;

[0039] e. The upper mold 1 and the lower mold 2 are separated for unloading to obtain the adjusting buckle.

[0040] This technical solution incorporates the product structure and designs a corresponding mold structure. The adjusting buckle is a flat ring structure integrally injection molded from soft plastic. Its center has a rope hole 301 for threading through both ends of the cord 100. Inside the rope hole 301, there are two protrusions 302 for securing the clothing cord 100. Therefore, when designing the mold, the process involves mold casting and cooling. After the shape of the adjusting buckle is fixed, it undergoes slight deformation to demold it for production. This greatly simplifies the production process and improves production efficiency, taking into account the actual situation of the product.

[0041] Before casting, the core 4 moves to a position before the upper mold 1 and lower mold 2 are closed. When the upper mold 1 and lower mold 2 are closed, a certain amount of pressure is applied to the core 4, and the position of the core 4 is fixed. This makes the connection between the cavity 3 and the core 4 tight, ensuring the structural sealing of the cavity 3 and improving the uniformity of the shape of the produced adjustment buckle.

[0042] Structurally, the mold has 5 evenly distributed cavities 3. This number can be designed according to the requirements. 5-10 cavities 3 can be injected at a time to fully ensure production efficiency.

[0043] Each of the cores 4 is mounted on a drive mechanism that drives it to reciprocate along the extension channel 5. The drive mechanism includes a connecting plate 6 connecting each of the cores 4 and a cylinder assembly (not shown in the figure) that drives the connecting plate 6 to move closer to or away from the mold. In production, the cylinder assembly drives the connecting plate 6 to move, thereby causing the multiple elongated core structures 4 on the connecting plate 6 to reciprocate along the extension channel 5 to meet production needs. The surface of the upper mold 1 or the lower mold 2 is provided with guide grooves 41 for guiding and positioning each of the cores 4. Correspondingly, the connecting plate 6 has guide blocks 61 that are adapted to the guide grooves 41 to ensure that the core 4 is sufficiently positioned each time it extends into the cavity 3, and to ensure that the core 4 does not detach from the extension channel 5 when it resets.

[0044] For example Figure 7As shown, the mold has a double-row structure based on the above, with 10 cavities 3, which are divided into two groups of 5 each. The corresponding cores 4 are inserted from both sides of the mold to match the corresponding cavities 3. Similarly, the number of cavities 3 can be 10-20 per injection to further improve production efficiency.

[0045] The mold of this technical solution also has the gate, runner, cooling water channel and other devices of traditional injection molds, which are well known to those skilled in the art and will not be described in detail here.

[0046] Example 2

[0047] Also refer to Figure 8 Another type of cord buckle 300 structure is described, where the cross-section of the protrusion 302 is a right-angled triangle, and its hypotenuse is the extension surface 3021, which extends inward and upward along the end of the cord hole 301. In this structure, the two ends of the protrusion 302 fit together more tightly, and their contact points 3022 are adjacent, ensuring a secure clamping of the flexible cord 100. Furthermore, the extension range of the extension surface 3021 is larger, facilitating the insertion of the cord 100. However, this type of cord buckle 300 requires a larger deformation during demolding. Therefore, in production, step c1 is included between steps c and d: the upper mold 1 and the lower mold 2 are pre-separated to allow the adjusting buckle to deform. This increases the deformation of the adjusting buckle during demolding, ensuring smooth demolding. This is another specific implementation process that can be used to implement the inventive concept of this technical solution.

[0048] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A manufacturing process for a clothing drawstring adjustment buckle, characterized in that: The garment drawstring adjustment buckle includes a drawstring (100), a drawstring loop (200), and a drawstring buckle (300). The drawstring buckle (300) is a flat ring structure integrally molded from soft plastic. It has a drawstring hole (301) in the center for threading through both ends of the drawstring (100). The drawstring loop (200) is sleeved on the drawstring (100) and located at the fold of the drawstring (100). The drawstring hole (301) has two protrusions (302) inside for locking the two ends of the drawstring (100). The two protrusions (302) have an extension surface (3021) that extends inward and upward from the end of the drawstring hole (301) to facilitate the insertion of the drawstring (100) and an abutment point (3022) located at the end of the extension surface (3021). The abutment point (3022) on the two protrusions (302) abuts against the surface of the drawstring (100) to clamp and fix the two ends of the drawstring (100). The following mold structure is adopted, including an upper mold (1) and a lower mold (2). The upper mold (1) and the lower mold (2) are fastened to form a plurality of cavities (3) corresponding to the adjustment buckle. A plurality of matching cores (4) are provided at the joint surface of the upper mold (1) and the lower mold (2) extending inward from the outside of the upper mold (1) and the lower mold (2) and extending into each cavity (3). An extension channel (5) for the cores (4) to pass through is provided between the upper mold (1) and the lower mold (2). Its production process includes the following steps: a. Before the upper mold (1) and the lower mold (2) are closed, each of the cores (4) is inserted into the designated position of the cavity (3) through the extension channel (5); b. The upper mold (1) and the lower mold (2) are closed to press the core (4) so ​​that its position is fixed and the cavity (3) structure is sealed. c. The mold is poured and cooled to fix the shape of the adjusting buckle; d. Pull the core (4) along the extension channel (5) to move it out of the mold. After the shape of the adjusting buckle is fixed, deform it to demold it. e. The upper mold (1) and the lower mold (2) are separated for unloading to obtain the adjusting buckle.

2. The manufacturing process of a clothing drawstring adjustment buckle according to claim 1, characterized in that: Between steps c and d above, there is also step c1: the upper mold (1) and the lower mold (2) are separated in advance so that the adjusting buckle can deform.

3. The manufacturing process of a clothing drawstring adjustment buckle according to claim 1, characterized in that: Each of the cores (4) is mounted on a drive mechanism that drives it to reciprocate along the extension channel (5), the drive mechanism including a connecting plate (6) connecting each of the cores (4) and a cylinder assembly that drives the connecting plate (6) to move closer to or away from the mold.

4. The manufacturing process of a clothing drawstring adjustment buckle according to claim 1, characterized in that: The mold has 5-10 cavities evenly distributed (3).

5. The manufacturing process of a clothing drawstring adjustment buckle according to claim 1, characterized in that: The mold has 10-20 cavities (3) divided into two groups, and the corresponding cores (4) are inserted from both sides of the mold to match the corresponding cavities (3).

6. The manufacturing process of a clothing drawstring adjustment buckle according to any one of claims 1-5, characterized in that: The surface of the upper mold (1) or the lower mold (2) is provided with guide grooves (41) for guiding and positioning each of the cores (4).

Images