Plastic forming mold special for network cable crystal head

Abstract

The utility model provides a special plastic forming mould for a network cable crystal head, which comprises a mould body, the mould body is formed by combining an upper mould strip and a lower mould strip, the left end and the right end of the upper mould strip are respectively provided with an upper threaded hole, the left end and the right end of the lower mould strip are respectively provided with a lower threaded hole, and bolts are arranged in the lower threaded holes. A movable gap is formed between the upper die strip and the lower die strip, the left side and the right side of the upper die strip and the left side and the right side of the lower die strip are respectively provided with a spring groove, each spring groove is provided with a spring, the die body is provided with a plurality of die strip insertion holes, and the die strip insertion holes comprise upper half insertion holes formed in the upper die strip and lower half insertion holes formed in the lower die strip. And a raised metal tooth sheet is arranged in the upper half jack. According to the utility model, the two die strips with teeth are designed, the two die strips are elastically fixed, and the die strips are completely closed to limit the height when the die is closed, so that a molding inner die sizing material is prevented from being injected into a crystal head to cause the punching height of a gold sheet.

Description

Technical Field

[0001] The utility model relates to the technical field of network crystal head production, and particularly relates to a special plastic forming mold for network cable crystal heads. Background Technique

[0002] An injection mold is a tool for producing plastic products. It injects the heat-melted plastic into the mold cavity under high pressure by an injection molding machine. After cooling and solidifying, a formed product is obtained. The common injection mold mainly consists of a moving mold and a fixed mold. The moving mold is installed on the moving template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. When injection molding, the moving mold and the fixed mold are closed to form a gating system and a cavity. When the mold is opened, the moving mold and the fixed mold are separated to take out the plastic product.

[0003] As a connecting component for telephones and networks, with the continuous progress of technology, crystal heads are increasingly widely used. The existing crystal heads generally adopt injection molding. When the traditional network cable forming inner mold is used, an integral mold bar is used for operation. The integral mold bar has no teeth in the middle. When the crystal head is inserted into the mold bar, there is no height control. When forming, the rubber material is easily flushed into the plug, which is likely to cause the gold sheet to be flushed high or the plastic to be flushed up to form a bulge, resulting in unstable quality. At present, in the industry, for the defect of the gold sheet being flushed high, an additional riveting process is added to control the defect, which will increase an operation procedure and the production efficiency is relatively low. Summary of the Invention

[0004] The purpose of the utility model is to provide a special plastic forming mold for network cable crystal heads aiming at the deficiencies of the prior art, to solve the problem that the rubber material of the forming inner mold is injected into the crystal head and causes the gold sheet to be flushed high in the prior art, so as to improve the quality of the product.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A special plastic forming mold for network cable crystal heads includes a mold body, which is composed of an upper mold bar and a lower mold bar. A plurality of mold bar insertion holes are arranged on the mold body, and a crystal head-shaped accommodating cavity is provided in the mold bar insertion holes. Threaded holes are respectively opened at the left and right ends of the lower surface of the upper mold bar, and threaded holes are respectively opened at the left and right ends of the lower mold bar. Bolts for fixing the upper mold bar and the lower mold bar are arranged in the lower threaded holes. The upper mold bar and the lower mold bar are installed together by bolts. After installation, there is a certain activity gap between the upper mold bar and the lower mold bar. Spring grooves are respectively opened on the left and right sides of the upper mold bar and the lower mold bar, and a spring is arranged in each spring groove. The mold bar insertion hole includes an upper half insertion hole opened at the lower end of the upper mold bar and a lower half insertion hole opened at the upper end of the lower mold bar. The positions of the upper half insertion hole and the lower half insertion hole correspond to each other, and the upper half insertion hole and the lower half insertion hole are combined to form a mold bar insertion hole. A protruding metal tooth piece is arranged in the upper half insertion hole.

[0007] Further, the upper die bar and the lower die bar are made of SKD11 die steel, and both the upper die bar and the lower die bar are long strips.

[0008] Further, the upper threaded hole does not penetrate the entire upper die bar, the lower threaded hole penetrates the entire lower die bar, and the position of the lower threaded hole corresponds to the position of the upper threaded hole.

[0009] Further, the clearance between the upper die bar and the lower die bar is 0.5 - 0.6 mm.

[0010] Further, the upper surface of the metal tooth piece has a smooth plane, the lower surface of the metal tooth piece is provided with a protruding rack, and the length of the metal tooth piece is 5.5 mm.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The utility model has a simple structure and a reasonable design. By designing two-piece toothed die bars, the two die bars adopt an elastic fixing method. When the mold is closed, the height of the teeth of the die bars is completely limited, preventing the formed inner mold rubber from injecting into the crystal head and causing the gold sheet to be pushed up, thereby effectively guaranteeing the product quality, reducing the product defect rate, and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 is a schematic structural view of the special plastic forming mold for the network cable crystal head of the utility model;

[0014] Attached Figure 2 is Figure 1 a schematic structural view of the upper die bar shown in the attachment;

[0015] Attached Figure 3 is Figure 3 a schematic structural view of the lower die bar shown in the attachment;

[0016] Attached Figure 4 is Figure 3 a schematic structural view of the metal tooth piece shown in the attachment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0018] As Figures 1 - 3As shown in the figure, a special plastic molding die for network cable crystal heads includes a die body 10, which is composed of an upper die bar 1 and a lower die bar 2. A plurality of die bar jacks 3 are provided on the die body 10. The die bar jacks 3 have a receiving cavity in the shape of a crystal head for injection molding of crystal head products. In this embodiment, four die bar jacks 3 are provided on the die body 10.

[0019] The upper die bar 1 and the lower die bar 2 are made of SKD11 die steel. Both the upper die bar 1 and the lower die bar 2 are long strips. Among them, a threaded hole 11 is provided at each of the left and right ends of the lower surface of the upper die bar 1. The threaded hole 11 does not penetrate the entire upper die bar 1. Threaded holes 21 are provided at the left and right ends of the lower die bar 2. The threaded holes 21 penetrate the entire lower die bar 2. The positions of the threaded holes 21 correspond to the positions of the threaded holes 11. Bolts are provided in the threaded holes 21. During installation, the bolts pass through the threaded holes 21 and the threaded holes 11 to fix the upper die bar 1 and the lower die bar 2 together to form a die structure. When the bolts are tightened in place, there is a movable gap of 0.5 - 0.6 mm between the upper die bar 1 and the lower die bar 2. Preferably, a spring groove 4 is provided on both the left and right sides of the upper die bar 1 and the lower die bar 2. A spring is provided in the spring groove 4, and under the action of the spring, the upper die bar 1 and the lower die bar 2 can be automatically separated to facilitate mold removal. During use, after the upper die bar 1 and the lower die bar 2 are pressed tightly by a hydraulic device, the heated and melted material is injected into the die bar jacks 3. After cooling, the hydraulic device is loosened, and under the action of the spring, the upper die bar 1 and the lower die bar 2 are separated, facilitating the removal of the molded model in the die bar jacks.

[0020] The die bar jack 3 includes an upper half jack 12 provided at the lower end of the upper die bar 1 and a lower half jack 22 provided at the upper end of the lower die bar 2. The positions of the upper half jack 12 and the lower half jack 22 correspond to each other. The upper half jack 12 and the lower half jack 22 are combined to form a die bar jack 3. A raised metal tooth piece 13 is provided in the upper half jack 12. As Figure 4 shown, the upper surface of the metal tooth piece 13 has a smooth plane, and a raised rack 131 is provided on the lower surface of the metal tooth piece 13. The length of the metal tooth piece 13 is 5.5 mm. The metal tooth piece 13 is used to play a role in height limitation when the upper die bar 1 and the lower die bar 2 are closed, preventing the inner mold rubber material from being injected into the crystal head and causing the gold piece to be pushed up.

[0021] The working principle of the present utility model is as follows:

[0022] When the forming mold is in production use, first, the upper die bar 1 and the lower die bar 2 are closed. Bolts are passed through the lower threaded holes 21 and the upper threaded holes 11 to fix the upper die bar 1 and the lower die bar 2 together, forming a mold structure. Under the action of the spring, there is an active gap of 0.5 - 0.6 mm between the upper die bar 1 and the lower die bar 2 after closing the mold. The closed mold is placed on the working station of the injection molding equipment, and the forming mold is pressed tightly by the hydraulic device. The heated and melted material is injected into the die bar insertion hole 3. After cooling, the hydraulic device is released. Under the action of the spring, the upper die bar 1 and the lower die bar 2 are separated, which is convenient for taking out the model injected into the die bar insertion hole.

[0023] By designing the forming mold into a two-piece die bar structure, the two die bars adopt an elastic fixing method, and raised metal teeth 13 are arranged in the upper die bar 1. The height is limited by using the metal teeth 13 when the mold is closed, effectively solving the problem that the gold sheet is lifted high due to the injection of the inner mold compound into the crystal head in the existing forming inner mold.

[0024] The structure of the utility model is simple and reasonable. By designing the inner mold with two-piece toothed die bars, the two die bars adopt an elastic fixing method, and the die bar teeth are completely closed to limit the height when the mold is closed, preventing the inner mold compound from being injected into the crystal head and causing the gold sheet to be lifted high, thus effectively ensuring the product quality, reducing the product defect rate, and improving the production efficiency.

[0025] The above are only the embodiments of the utility model, and do not limit the patent scope of the utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the utility model, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the utility model by the same token.

Claims

1. A special plastic molding die for network cable crystal heads, comprising a die body, characterized in that: The mold body is composed of an upper die bar and a lower die bar. A plurality of die bar insertion holes are provided on the mold body. The die bar insertion holes have a crystal head-shaped accommodation cavity. At the left and right ends of the lower surface of the upper die bar, an upper threaded hole is respectively opened. At the left and right ends of the lower die bar, a lower threaded hole is respectively opened. A bolt for fixing the upper die bar and the lower die bar is arranged in the lower threaded hole. The upper die bar and the lower die bar are installed together by bolts. After installation, there is a certain movement gap between the upper die bar and the lower die bar. On the left and right sides of the upper die bar and the lower die bar, a spring groove is respectively opened. A spring is arranged in the spring groove. The die bar insertion hole includes an upper half insertion hole opened at the lower end of the upper die bar and a lower half insertion hole opened at the upper end of the lower die bar. The positions of the upper half insertion hole and the lower half insertion hole correspond to each other. The upper half insertion hole and the lower half insertion hole are combined to form a die bar insertion hole. A raised metal tooth piece is arranged in the upper half insertion hole.

2. The special plastic molding die for the network cable crystal head according to claim 1, wherein: The upper die bar and the lower die bar are made of SKD11 mold steel. Both the upper die bar and the lower die bar are strip-shaped.

3. The special plastic molding die for network cable crystal head according to claim 1, characterized in that: The upper threaded hole does not penetrate the entire upper die bar. The lower threaded hole penetrates the entire lower die bar. The position of the lower threaded hole corresponds to the position of the upper threaded hole.

4. The special plastic forming mold for the network cable crystal head according to claim 2, characterized in that: The movement gap between the upper die bar and the lower die bar is 0.5 - 0.6 mm.

5. The special plastic forming mold for network cable crystal head according to claim 1, characterized in that: The upper surface of the metal tooth piece has a smooth plane. The lower surface of the metal tooth piece is provided with raised racks. The length of the metal tooth piece is 5.5 mm.

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