A mold for two-shot injection molding of long products

Abstract

The utility model discloses a mold for twice injection molding of long products, which is applied in the field of molds, comprising a side support component, an intermediate support component, a guide buffer component, a lower mold component and a positioning component, wherein the side support component, the intermediate support component, the guide buffer component and the lower mold component are installed in sequence from left to right; the positioning component is installed at the top of the lower mold component, and the lower mold component comprises a lower template, and an injection head is installed at the bottom of the lower template; the positioning component comprises a positioning plate; the utility model supports and fixes the long product by arranging the positioning component, and the width dimension of the lower template remains normal, thereby shortening the single injection molding length of the long product, avoiding product injection bending deformation, and the injection imbalance problem between the middle section product and the products at both ends; and the single injection molding length of the long product can be shortened, which can also reduce the length dimension of the mold, thereby saving material cost and processing cost.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a mold for twice-injection molding of long products. Background Art

[0002] At present, when using the mold for long tube-shaped surface sleeve injection molding, the long tube needs to be inserted into the mold. Due to the influence of the length of the long tube, the mold also needs to have a corresponding length. The overall volume of the mold is narrow, long and thin, which easily causes the product to bend and deform during injection molding, which is not conducive to processing; and the injection of the middle section product and the products at both ends are unbalanced. In order to solve the above problems, we propose a mold for two-shot injection molding of long products. Utility Model Content

[0003] The utility model aims to provide a mold for twice-injection molding of long products, which has the advantage of being able to reduce the size of the mold.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a mold for two-time injection molding of long products, comprising a side support assembly, an intermediate support assembly, a guide buffer assembly, a lower mold assembly and a positioning assembly, wherein the side support assembly, the intermediate support assembly, the guide buffer assembly and the lower mold assembly are installed in sequence from left to right; the positioning assembly is installed at the top of the lower mold assembly, the lower mold assembly comprises a lower mold plate, and an injection molding head is installed at the bottom of the lower mold plate; the positioning assembly comprises a positioning plate, the bottom end of the positioning plate is fixedly connected to the lower mold plate, a positioning slider is slidably connected to the inside of the positioning plate, an oil cylinder is installed at the top of the positioning plate, and the output end of the oil cylinder is installed with the positioning slider;

[0005] The interior of the positioning plate and the lower template are both provided with two injection molding grooves;

[0006] It should be noted that the injection molding groove is configured to place the long product and to allow the injection molding product to be formed during injection molding.

[0007] By adopting the above technical solution, the overall size of the mold is reduced by providing a positioning component and a lower mold component and adopting a secondary injection molding method.

[0008] The utility model is further configured as follows: the side support assembly comprises a side support plate, and a side of the side support plate close to the middle support assembly is fixedly connected with a plurality of connecting rods.

[0009] The above technical solution is adopted to support the intermediate support assembly, the guide buffer assembly and the lower mold assembly through the setting of the side support assembly.

[0010] The utility model is further configured as follows: the intermediate support assembly includes an intermediate support plate, a plurality of connecting circular grooves which are engaged with connecting rods are opened inside the intermediate support plate, and a plurality of connecting columns are fixedly connected to one side of the intermediate support plate close to the guide buffer assembly.

[0011] The above technical solution is adopted to connect and fix the guide buffer assembly through the provision of the intermediate support assembly.

[0012] The utility model is further configured as follows: the guide buffer assembly comprises a fixing plate, a plurality of connecting column holes which are clamped with connecting columns are opened inside the fixing plate, and a plurality of guide rods are fixedly connected to one side of the fixing plate close to the lower template.

[0013] The above technical solution is adopted to support the lower template through the setting of the guide buffer assembly and to buffer and guide the lower template through the guide rod and the spring;

[0014] A guide groove which is slidably connected with the guide rod is arranged inside the lower template.

[0015] The utility model is further configured as follows: four guide rods are fixedly connected to one side of the fixed plate close to the lower template, and guide grooves slidably connected to the four guide rods are provided inside the lower template.

[0016] By adopting the above technical solution, through the arrangement of the guide rod and the guide groove, the guide rod slides inside the guide groove, so as to linearly guide the lower template.

[0017] The utility model is further configured as follows: a spring is sleeved on the surface of the guide rod.

[0018] The above technical solution is adopted, through the setting of the spring, to buffer the lower template when the lower template is subjected to force, thereby playing a shock-absorbing and buffering role.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. The utility model supports and fixes the long product by setting a positioning component, and the width dimension of the lower template remains normal, thereby shortening the single injection length of the long product, avoiding the bending deformation of the product during injection, and the problem of unbalanced injection between the middle section product and the products at both ends; and the single injection length of the long product can be shortened, which can also reduce the length dimension of the mold, thereby saving material cost and processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the side support assembly of the utility model;

[0023] Figure 3 It is a schematic diagram of the intermediate support assembly of the utility model;

[0024] Figure 4 This is a schematic diagram of the guide buffer assembly of the utility model;

[0025] Figure 5 It is a schematic diagram of the coordinated use of the lower die assembly and the positioning assembly of the utility model.

[0026] Reference numerals: 1, side support assembly; 11, side support plate; 12, connecting rod;

[0027] 2. Intermediate support assembly; 21. Intermediate support plate; 22. Connecting circular groove; 23. Connecting column;

[0028] 3. Guide buffer assembly; 31. Fixing plate; 32. Connecting column hole; 33. Guide rod;

[0029] 4. Lower mold assembly; 41. Lower mold plate; 42. Injection molding head;

[0030] 5. Positioning assembly; 51. Positioning plate; 52. Positioning slide block; 53. Oil cylinder;

[0031] 6. Injection groove; 7. Guide rod; 8. Guide groove; 9. Spring. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0033] Embodiment 1:

[0034] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A mold for two-time injection molding of a long product, comprising a side support assembly 1, an intermediate support assembly 2, a guide buffer assembly 3, a lower mold assembly 4 and a positioning assembly 5, wherein the side support assembly 1, the intermediate support assembly 2, the guide buffer assembly 3 and the lower mold assembly 4 are sequentially installed from left to right; the positioning assembly 5 is installed at the top of the lower mold assembly 4, the lower mold assembly 4 comprises a lower mold plate 41, and an injection head 42 is installed at the bottom of the lower mold plate 41; the positioning assembly 5 comprises a positioning plate 51, the bottom end of the positioning plate 51 is fixedly connected to the lower mold plate 41, a positioning slider 52 is slidably connected inside the positioning plate 51, and an oil cylinder 53 is installed at the top of the positioning plate 51, and an oil cylinder 53 is installed at the top of the positioning plate 51. The output end of the cylinder 53 is installed with the positioning slider 52; two injection grooves 6 are provided inside the positioning plate 51 and the lower template 41; it should be noted that the injection groove 6 is configured to place long products and to allow the injection molded products to be formed during injection molding; the long products are supported and fixed by setting the positioning component 5, and the length dimension of the lower template 41 remains normal, thereby shortening the single injection length of the long products, avoiding the bending deformation of the products during injection molding, and the unbalanced injection problem between the middle section products and the products at both ends; and the single injection length of the long products can be shortened, which can also reduce the length dimension of the mold, thereby saving material costs and processing costs.

[0035] Furthermore, the side support assembly 1 includes a side support plate 11, and a plurality of connecting rods 12 are fixedly connected to one side of the side support plate 11 close to the middle support assembly 2. Through the setting of the side support assembly 1, it is used to support the middle support assembly 2, the guide buffer assembly 3 and the lower mold assembly 4.

[0036] Furthermore, the intermediate support assembly 2 includes an intermediate support plate 21, the interior of which is provided with a plurality of connecting circular grooves 22 which are clamped with the connecting rod 12, and a plurality of connecting columns 23 are fixedly connected to one side of the intermediate support plate 21 close to the guide buffer assembly 3, and the intermediate support assembly 2 is arranged to connect and fix the guide buffer assembly 3.

[0037] Furthermore, the guide buffer assembly 3 includes a fixed plate 31, a plurality of connecting column holes 32 are provided inside the fixed plate 31 and are clamped with the connecting column 23, a plurality of guide rods 33 are fixedly connected to one side of the fixed plate 31 close to the lower template 41, and the guide buffer assembly 3 is provided to support the lower template 41 and to buffer and guide the lower template 41 through the guide rod 7 and the spring 9; a guide groove is provided inside the lower template 41 and is slidably connected to the guide rod 33.

[0038] Furthermore, four guide rods 7 are fixedly connected to one side of the fixed plate 31 close to the lower template 41, and a guide groove 8 is provided inside the lower template 41 to be slidably connected to the four guide rods 7. Through the setting of the guide rods 7 and the guide grooves 8, the guide rods 7 slide inside the guide grooves 8, and the lower template 41 can be linearly guided.

[0039] Furthermore, a spring 9 is sleeved on the surface of the guide rod 7. The spring 9 is used to buffer the lower template 41 when the lower template 41 is subjected to force, thereby playing a shock-absorbing and buffering role.

[0040] Brief description of the use process: The width of the mold remains unchanged, the length of the mold is greatly reduced, and the cost required for manufacturing the mold is reduced. The length of the mold is designed according to 7 / 12 of the length of the product. By setting the positioning component 5, the long tube is first placed inside the injection groove 6, and then the oil cylinder 53 is started to push the positioning slider 52 to move toward the long tube. The positioning slider 52 contacts one end of the long tube product, and the other end of the long tube product is limited by the injection head 42, which can ensure the stability of the product during the injection molding process.

[0041] The mold is used to mold the product in two times. The first injection molding process is for 6 products. Figure 1 and Figure 5 After the injection molding is completed, take it out and rotate it 180° and place it in the second injection molding groove 6. Figure 1 and Figure 5 The injection molding groove 6 on the left side of the mold is used to mold 7 products in the second injection molding process, thus completing the injection molding process of the entire product;

[0042] Injection molding is carried out in an assembly line manner. The mold can complete the injection molding of a long tube product through a single simultaneous injection molding of the left and right sides, which will not slow down the injection molding speed or reduce the injection molding efficiency.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A mold for double injection molding of a long product, comprising a side support assembly (1), an intermediate support assembly (2), a guide buffer assembly (3), a lower mold assembly (4) and a positioning assembly (5), characterized in that: The side support assembly (1), the middle support assembly (2), the guide buffer assembly (3) and the lower mold assembly (4) are installed in sequence from left to right; the positioning assembly (5) is installed at the top of the lower mold assembly (4), the lower mold assembly (4) comprises a lower mold plate (41), and an injection head (42) is installed at the bottom of the lower mold plate (41); the positioning assembly (5) comprises a positioning plate (51), the bottom end of the positioning plate (51) is fixedly connected to the lower mold plate (41), the interior of the positioning plate (51) is slidably connected to a positioning slider (52), the top end of the positioning plate (51) is installed with an oil cylinder (53), and the output end of the oil cylinder (53) is installed with the positioning slider (52); The positioning plate (51) and the lower mold plate (41) are each provided with two injection molding grooves (6) therein.

2. A mold for two-shot injection molding of a long product according to claim 1, characterized in that: The side support assembly (1) comprises a side support plate (11), and a plurality of connecting rods (12) are fixedly connected to one side of the side support plate (11) close to the middle support assembly (2).

3. A mold for double injection molding of long products according to claim 2, characterized in that: The intermediate support assembly (2) comprises an intermediate support plate (21), the interior of the intermediate support plate (21) is provided with a plurality of connecting circular grooves (22) which are engaged with the connecting rod (12), and a plurality of connecting columns (23) are fixedly connected to one side of the intermediate support plate (21) close to the guide buffer assembly (3).

4. A mold for two-shot injection molding of a long product according to claim 3, characterized in that: The guide buffer assembly (3) comprises a fixed plate (31), a plurality of connection column holes (32) for clamping with the connection columns (23) are provided inside the fixed plate (31), and a plurality of guide rods (33) are fixedly connected to one side of the fixed plate (31) close to the lower template (41).

5. A mold for double injection molding of long products according to claim 4, characterized in that: Four guide rods (7) are fixedly connected to one side of the fixed plate (31) close to the lower template (41), and a guide groove (8) slidably connected to the four guide rods (7) is provided inside the lower template (41).

6. A mold for two-shot injection molding of a long product according to claim 5, characterized in that: A spring (9) is sleeved on the surface of the guide rod (7).

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