Water gap self-breaking type glue injection structure

Abstract

The utility model aims to provide a gate self-breaking type glue injection structure, which comprises a mold enclosing assembly and a glue injection assembly, the mold enclosing assembly comprises a fixed mold plate and a side mold plate, the fixed mold plate is provided with a shaping groove and an embedding hole which are communicated with each other, the shaping groove is positioned on one side wall of the fixed mold plate, one side wall of the side mold plate is provided with a side groove, and the embedding hole is positioned in the side groove. The side mold plate is arranged on one side of the fixed mold plate in a sliding mode so that a mold groove can be jointly defined by the side mold groove and the shaping groove, the glue injection assembly comprises two glue injection plates, the two glue injection plates are each provided with a glue injection half groove, the two glue injection plates are buckled to be jointly inserted into the embedding hole so that the two glue injection half grooves can form a glue hidden hole, and the glue hidden hole is communicated with the glue hidden hole. One end of the hidden glue hole is communicated with the mold groove, and the other end of the hidden glue hole extends to the top of the fixed mold plate. Therefore, the hidden glue hole structure is arranged on the mold structure, so that the plastic product and the drainage opening material can be automatically separated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a self-breaking sprue injection structure. Background Art

[0002] An injection mold is a tool for producing plastic products. By machining a cavity with the shape of the product inside the mold, the plastic product with the corresponding shape can be formed by injecting glue into the cavity.

[0003] Current molds all have plastic flow channels connected to the mold cavity. The plastic flow channels form sprue material. Therefore, after the mold is opened, the sprue material will be connected to the plastic product so that they can be removed from the mold at the same time. In this way, workers are required to cut the sprue material from the plastic product. However, the connection between the sprue material and the plastic product often lacks a clear dividing line, which will cause workers to overcut or undercut the sprue material when cutting. Overcutting means that too much sprue material will be cut off, which will cause the connection between the plastic product and the sprue material to be concave. Undercutting means that the amount of sprue material cut off is insufficient, resulting in a convex connection between the plastic product and the sprue material. Therefore, in order to solve the above problems, the present application proposes a sprue self-breaking injection structure. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a nozzle self-breaking glue injection structure which can automatically disconnect nozzle material from plastic products, thereby eliminating the need for workers to manually cut the nozzle.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A gate self-breaking glue injection structure, comprising:

[0007] A surrounding mold assembly, the surrounding mold assembly includes a fixed mold plate and a side mold plate, the fixed mold plate is provided with mutually communicating shaping grooves and embedded holes, and the shaping groove is located on a side wall of the fixed mold plate, and a side molding groove is provided on one side wall of the side mold plate, and the side mold plate is slidably provided on one side of the fixed mold plate so that the side molding groove and the shaping groove together form a mold groove; and

[0008] The glue injection component includes two glue injection plates, each of which has a glue injection half groove. The two glue injection plates are buckled together to be inserted into the embedded hole together, so that the two glue injection half grooves are combined into a latent glue hole, and one end of the latent glue hole is connected to the mold groove, and the other end of the latent glue hole extends to the top of the fixed template.

[0009] Optionally, the glue injection half groove includes a first material segment, a second material segment and an injection segment, the two ends of the second material segment are respectively connected to the first material segment and the injection segment, the end of the injection segment away from the second material segment is connected to the mold groove, and the first material segment is located on the top surface of the glue injection plate.

[0010] Optionally, the glue injection half groove further includes a cold material segment, the cold material segment is connected to the first material segment and the second material segment respectively, and the cold material segment is aligned with the first material segment.

[0011] Optionally, the inner diameter of the second material segment gradually decreases from the first material segment to the injection segment.

[0012] Optionally, the inner diameter of one end of the second material segment communicating with the first material segment is consistent with the inner diameter of the first material segment.

[0013] Optionally, the second material segment is an arc-shaped structure.

[0014] Optionally, the maximum inner diameter of the injection section is smaller than the minimum inner diameter of the second section.

[0015] Optionally, a feed trough is provided on the top surface of the fixed template, and the feed trough is connected to the first material section.

[0016] Optionally, a clamping block is provided at one end of the glue injection plate away from the first material section, and a clamping slot communicating with the embedding hole is provided on the fixed template, and the clamping block is adaptively accommodated in the clamping slot.

[0017] Optionally, water injection holes are provided on the fixed template and the side template.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] The plastic is injected into the mold cavity through the latent glue hole, forming a corresponding plastic product in the mold cavity, and a sprue material is formed in the latent glue hole. Since the latent glue hole is located in the fixed template, the plastic product will be directly separated from the sprue material in the latent glue hole during demolding. In this way, compared with the existing mold that requires a cutter to cut the sprue material, the present application can solve the problem of manual sprue cutting by setting a latent glue hole structure on the mold structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural diagram of a gate self-breaking glue injection structure according to one embodiment of the present invention;

[0022] Figure 2 for Figure 1 The exploded structure diagram of the gate self-breaking glue injection structure shown in FIG.

[0023] Figure 3 for Figure 1 The cross-sectional structure diagram of the gate self-breaking glue injection structure shown;

[0024] Figure 4 This is a structural diagram of a glue injection plate according to one embodiment of the present invention;

[0025] Figure 5 This is a structural schematic diagram of a fixed template in one embodiment of the present utility model.

[0026] Description of reference numerals:

[0027] 10. Self-closing sprue injection structure; 100. Surrounding mold assembly; 200. Glue injection assembly; 110. Fixed mold plate; 120. Side mold plate; 111. Molding groove; 112. Embedded hole; 121. Side molding groove; 130. Mold groove; 210. Glue injection plate; 211. Glue injection half groove; 220. Submerged glue hole; 2111. First material section; 2112. Second material section; 2113. Injection section; 2114. Cold material section; 113. Feed trough; 230. Block; 114. Clamping groove; 115. Water injection hole; 212. Air relief groove; 240. Air relief ejector pin; 241. Air relief top trough. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

[0029] like Figures 1 to 3As shown, a nozzle self-breaking glue injection structure 10 includes a surrounding mold assembly 100 and a glue injection assembly 200. The surrounding mold assembly 100 includes a fixed mold plate 110 and a side mold plate 120. The fixed mold plate 110 is provided with a fixed groove 111 and an embedded hole 112 that are interconnected. The fixed groove 111 is located on a side wall of the fixed mold plate 110. A side groove 121 is provided on one side wall of the side mold plate 120. The side mold plate 120 is slidably arranged on one side of the fixed mold plate 110 so that The side groove 121 and the molding groove 111 together form a mold groove 130. The glue injection assembly 200 includes two glue injection plates 210. A glue injection half groove 211 is respectively provided on the two glue injection plates 210. The two glue injection plates 210 are buckled together to be inserted into the embedded hole 112 so that the two glue injection half grooves 211 are combined into a latent glue hole 220, and one end of the latent glue hole 220 is connected to the mold groove 130, and the other end of the latent glue hole 220 extends to the top of the fixed template 110.

[0030] It should be noted that the side template 120 is designed to slide laterally toward or away from the fixed template 110. When the side template 120 is abutted against one side of the fixed template 110, the molding groove 111 on a side wall of the fixed template 110 and the side molding groove 121 on a side wall of the side template 120 together enclose a mold cavity 130. The mold cavity 130 is used to mold plastic products. Furthermore, a vertically defined recess 112 is provided on the fixed template 110. The two glue injection plates 210, formed by interlocking with each other, can be snugly inserted into the recess 112. Each side wall of the two glue injection plates 210 has a glue injection half-groove 211. When the two glue injection plates 210 are interlocked and fixed, the two glue injection half-grooves 211 together enclose a latent glue hole 220. One end of each glue injection half-groove 211 is connected to the mold cavity 130, thereby ensuring that the formed latent glue hole 220 is connected to the mold cavity 130. In this way, the plastic is injected into the mold cavity 130 through the latent glue hole 220, and a corresponding plastic product is formed in the mold cavity 130, and a sprue material is formed in the latent glue hole 220. Since the latent glue hole 220 is located in the fixed template 110, the plastic product will be directly pulled apart from the sprue material in the latent glue hole 220 during demolding. Thus, compared with the existing mold that requires a cutter to cut the sprue material, the present application solves the problem of manual sprue cutting by providing a latent glue hole 220 structure on the mold structure. Thus, by setting the connection port between the latent glue hole 220 and the mold cavity 130 to an appropriate size, it can be ensured that the plastic product can be smoothly formed and can also be smoothly separated from the sprue material during demolding.

[0031] like Figure 3 and Figure 4As shown, in one embodiment, the glue injection half groove 211 includes a first material segment 2111, a second material segment 2112 and an injection segment 2113, and the two ends of the second material segment 2112 are respectively connected to the first material segment 2111 and the injection segment 2113, and the end of the injection segment 2113 away from the second material segment 2112 is connected to the mold groove 130, and the first material segment 2111 is located on the top surface of the glue injection plate 210.

[0032] It should be noted that the first material segment 2111 is located on the top surface of the injection plate 210, while the second material segment 2112 and the injection segment 2113 are both located within the injection plate 210. Thus, the plastic flows sequentially through the first material segment 2111, the second material segment 2112, and the injection segment 2113 before being injected into the mold cavity 130. The latent plastic hole 220 formed by the two injection half-grooves 211 is embedded in the fixed mold plate 110. Therefore, when the plastic product is demolded, it can be smoothly separated from the sprue material formed in the latent plastic hole 220.

[0033] like Figure 3 and Figure 4 As shown, in one embodiment, the glue injection half groove 211 further includes a cold material segment 2114 , which is communicated with the first material segment 2111 and the second material segment 2112 respectively, and the cold material segment 2114 is aligned with the first material segment 2111 .

[0034] It should be noted that the plastic enters the mold cavity 130 sequentially through the first material segment 2111, the second material segment 2112, and the injection segment 2113. The plastic at the front may cool slightly due to insufficient temperature. To prevent the slightly cooled plastic from clogging the injection segment 2113 or entering the mold cavity 130 and affecting the quality of the plastic product, a cold segment 2114 is provided on the injection plate 210, communicating with the first and second material segments 2111, 2112. The cold segment 2114 is aligned with the first material segment 2111. As a result, when the plastic flows from the first material segment 2111 to the second material segment 2112, the slightly cooled plastic at the front will be directly retained in the cold segment 2114 due to the corner structure between the first and second material segments 2111, 2112.

[0035] In one embodiment, the inner diameter of the second material segment 2112 gradually decreases from the first material segment 2111 to the injection segment 2113 .

[0036] In this way, as the inner diameter of the latent plastic hole 220 decreases, the flow rate of the plastic will increase, thereby ensuring that the plastic can be smoothly injected into the mold cavity 130 through the latent plastic hole 220 .

[0037] In one embodiment, the inner diameter of the end of the second segment 2112 that connects to the first segment 2111 is consistent with the inner diameter of the first segment 2111. This prevents the plastic from experiencing a sudden change in injection pressure due to a large change in inner diameter at the junction of the first segment 2111 and the second segment 2112. The plastic only gradually increases its flow rate once it enters the second segment 2112.

[0038] In one embodiment, the second segment 2112 has an arc-shaped structure. It should be noted that because the injected plastic has a certain pressure, the plastic flow rate is also relatively high. When the plastic flows from the first segment 2111 to the second segment 2112, the plastic flow direction can be roughly considered to be vertically downward. To ensure that the plastic can be injected into the mold cavity 130 at a constant speed, the second segment 2112 is configured as an arc-shaped structure. This effectively prevents sudden changes in the plastic flow rate. Furthermore, the sprue formed in the second segment 2112 also has an arc-shaped structure, which facilitates the removal of the sprue from the second segment 2112.

[0039] In one embodiment, the maximum inner diameter of the injection section 2113 is smaller than the minimum inner diameter of the second section 2112. It should be noted that the injection section 2113 serves as the connection between the second section 2112 and the mold cavity 130. To ensure that the plastic is injected into the mold cavity 130 at a certain speed, in this embodiment, the maximum inner diameter of the injection section 2113 is smaller than the minimum inner diameter of the second section 2112. This effectively increases the injection speed of the plastic into the mold cavity 130, thereby allowing the plastic to better fill the entire mold cavity 130.

[0040] like Figure 3 As shown, in one embodiment, a feed groove 113 is opened on the top surface of the fixed template 110 , and the feed groove 113 is connected to the first material section 2111 .

[0041] It should be noted that the feed trough 113 is aligned with the first material segment 2111 , so that the plastic flows through the feed trough 113 , the first material segment 2111 , the second material segment 2112 and the injection segment 2113 in sequence and is then injected into the mold cavity 130 .

[0042] like Figure 2 and Figure 5 As shown, in one embodiment, a clamping block 230 is provided at one end of the glue injection plate 210 away from the first material section 2111 , and a clamping groove 114 communicating with the embedding hole 112 is opened on the fixed template 110 , and the clamping block 230 is adaptively accommodated in the clamping groove 114 .

[0043] It should be noted that in order to ensure that the glue injection plate 210 is stably installed in the embedding hole 112, a card slot 114 is opened at the bottom of the embedding hole 112, and a card block 230 is set on the outer wall of the glue injection plate 210, and the card block 230 is adaptively accommodated in the card slot 114.

[0044] like Figure 2 As shown, in one embodiment, water injection holes 115 are provided on both the fixed template 110 and the side template 120 .

[0045] It should be noted that in order to facilitate the temperature adjustment of the fixed mold plate 110 and the side mold plate 120, water injection holes 115 are opened in the fixed mold plate 110 and the side mold plate 120. The water injection holes 115 are used to connect to external pipes and adjust the temperature of the fixed mold plate 110 and the side mold plate 120 by injecting water of a certain temperature.

[0046] Furthermore, it should be noted that the sprue self-breaking type glue injection structure 10 of the present application is intended to solve the technical problem of automatic separation of sprue material and plastic products. The sprue self-breaking type glue injection structure 10 of the present application needs to be applied to a specific injection mold. For example, the injection mold usually also includes an upper mold for engaging with the fixed mold plate 110 and the side mold plate 120, so that the upper mold and the mold groove 130 are enclosed together to form a closed injection mold cavity. Furthermore, a demoulding mechanism is installed at the bottom of the fixed mold plate 110. The demoulding mechanism includes a number of ejectors, which all pass through the fixed mold plate 110 to extend into the mold groove 130. In this way, after the mold groove 130 forms a plastic product, the side mold plate 120 moves away from the fixed mold plate 110, and then the ejector pins of the demoulding mechanism eject the plastic product from the mold groove 130.

[0047] like Figure 3 and Figure 4 As shown, in one embodiment, an air relief groove 212 is further provided on the glue injection plate 210, and the air relief groove 212 is connected to the glue injection half groove 211. An air relief push rod 240 is slidingly provided in the air relief groove 212, and the air relief push rod 240 is located at one end of the glue injection half groove 211 and is provided with an air relief top groove 241, and the air relief top groove 241 is aligned with the glue injection half groove 211.

[0048] It should be noted that during demolding of the plastic product, the aforementioned air release pin 240 is provided to facilitate extraction of the sprue material formed within the latent adhesive hole 220. Specifically, a linear drive source, such as a pneumatic cylinder, first drives the air release pin 240 downward relative to the adhesive injection plate 210, allowing the air release pin 240 to be extracted from the adhesive injection half-groove 211. This creates a non-enclosed space within the latent adhesive hole 220, allowing the sprue material to be smoothly extracted from the latent adhesive hole 220.

[0049] The above-mentioned embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in the present invention can be understood to include but not be limited to locking and fixing with screws / screws and welding. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A nozzle self-breaking glue injection structure, characterized in that: include: A surrounding mold assembly, the surrounding mold assembly includes a fixed mold plate and a side mold plate, the fixed mold plate is provided with mutually communicating shaping grooves and embedded holes, and the shaping groove is located on a side wall of the fixed mold plate, and a side molding groove is provided on one side wall of the side mold plate, and the side mold plate is slidably provided on one side of the fixed mold plate so that the side molding groove and the shaping groove together form a mold groove; and The glue injection component includes two glue injection plates, each of which has a glue injection half groove. The two glue injection plates are buckled together to be inserted into the embedded hole together, so that the two glue injection half grooves are combined into a latent glue hole, and one end of the latent glue hole is connected to the mold groove, and the other end of the latent glue hole extends to the top of the fixed template.

2. The nozzle self-breaking glue injection structure according to claim 1 is characterized in that: The glue injection half groove includes a first material segment, a second material segment and an injection segment. The two ends of the second material segment are respectively connected to the first material segment and the injection segment. The end of the injection segment away from the second material segment is connected to the mold groove. The first material segment is located on the top surface of the glue injection plate.

3. The automatic shutoff type glue injection structure of the nozzle according to claim 2 is characterized in that: The glue injection half trough further includes a cold material segment, which is communicated with the first material segment and the second material segment respectively, and the cold material segment is aligned with the first material segment.

4. The nozzle self-breaking glue injection structure according to claim 3, characterized in that: The inner diameter of the second material segment gradually decreases from the first material segment to the injection segment.

5. The automatic shutoff type glue injection structure of the nozzle according to claim 4 is characterized in that: The inner diameter of one end of the second material segment connected to the first material segment is consistent with the inner diameter of the first material segment.

6. The nozzle self-breaking glue injection structure according to claim 5, characterized in that: The second material segment is an arc-shaped structure.

7. The automatic shutoff type glue injection structure of the nozzle according to claim 6, characterized in that: The maximum inner diameter of the injection section is smaller than the minimum inner diameter of the second section.

8. The automatic shutoff type glue injection structure of the nozzle according to claim 2, characterized in that: A feed trough is provided on the top surface of the fixed template, and the feed trough is communicated with the first material section.

9. The automatic shutoff type glue injection structure of the nozzle according to claim 2, characterized in that: A clamping block is provided at one end of the glue injection plate away from the first material section, and a clamping slot communicating with the embedding hole is provided on the fixed template, and the clamping block is adaptively accommodated in the clamping slot.

10. The automatic shutoff type glue injection structure of the nozzle according to claim 1, characterized in that: Water injection holes are provided on the fixed template and the side template.

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