A multi-cavity die with a runner setting water gate insert

Abstract

This utility model discloses a multi-cavity mold with a sprue insert in the runner system, relating to the field of mold technology. It includes a moving mold cavity, with several P-shaped part injection cavities at the front and several L-shaped part injection cavities at the rear. The runner system includes a main inlet connecting two main runners. One main runner guides the P-shaped part injection cavities through a branch runner and a branch outlet, while the other main runner guides the L-shaped part injection cavities through the branch runner. A sprue insert is installed between the main runners and the branch runners. This utility model incorporates a sprue insert in the runner system of the multi-cavity mold. By directly adjusting the sprue insert, the main runners can be opened or blocked, ensuring that the multi-cavity mold can be produced on demand without changing the mold during production, thereby reducing mold opening costs and achieving flexible production.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a multi-cavity mold with a flow channel and a sprue insert. Background Technology

[0002] In industrial production, multi-cavity mold technology has seen significant development in order to improve production efficiency and reduce manufacturing costs. With increasing personalization, flexible manufacturing processes are becoming increasingly important.

[0003] There is a type of snap-fit ​​injection molded structural part in automotive components, which has the same function and similar size and appearance. This type of injection molded part is used extensively in automotive parts, due to its small size (see reference). Figure 1 This is suitable for multi-cavity mold production; however, due to its mirror-symmetric structure and high similarity, it is not easily distinguishable by appearance. Therefore, to prevent incorrect assembly of parts during product assembly, the same material is usually used for both left and right parts (see reference). Figure 2 Based on the shape of the parts, the mold parting method is divided into P-type and L-type, i.e., left and right parts, which are produced in different colors to distinguish them. However, the general injection molding production process uses the same material and the same color (two-color two-material injection molding is another production mode, with high mold and production costs). Therefore, the left and right parts need to be molded separately, and molds need to be changed during production. This will increase the mold opening cost, extend the production cycle, and fail to achieve the purpose of flexible production.

[0004] To achieve flexible production, the company designed a new type of gate insert for use in multi-cavity molds. Utility Model Content

[0005] This utility model provides a multi-cavity mold with a flow channel setting and a sprue insert, the purpose of which is to enable flexible production of the mold by adjusting the sprue insert.

[0006] This utility model provides the following technical solution to achieve the above objectives:

[0007] A multi-cavity mold with a runner and gate insert includes a runner template with runners arranged therein; a moving mold cavity with several P-type part injection cavities at the front and several L-type part injection cavities at the rear; the runners include a main inlet connecting two main runners, one of which guides the P-type part injection cavities through a branch runner and a branch outlet, and the other main runner guides the L-type part injection cavities through a branch runner; a gate insert is provided between the main runners and the branch runners; slider seats are provided on the left and right sides of the moving mold cavity, with wear-resistant plates on the outside of the slider seats and several slider cores corresponding to the P-type and L-type part injection cavities on the outside of the slider seats.

[0008] In the aforementioned multi-cavity mold with a sprue insert, the sprue insert is disposed in the runner template. The sprue insert is cylindrical and has a main runner opening, a branch runner opening, and a runner sealing platform at the top. A hex wrench position is provided at the top center of the sprue insert. A positioning bead hole is provided in the middle of the sprue insert, and a positioning bead is provided in the positioning bead hole. A hanging platform is provided at the bottom of the sprue insert. The runner template has a positioning bead anti-rotation groove at the height of the positioning bead hole and a machining reference position at the height of the hanging platform.

[0009] In the aforementioned multi-cavity mold with a flow channel and sprue insert, the depth of the internal hex wrench is 3mm.

[0010] Beneficial effects

[0011] Compared with the prior art, this utility model sets a gate insert on the runner of a multi-cavity mold. By directly adjusting the gate insert, the main runner can be opened or blocked, ensuring that the multi-cavity mold does not need to be replaced during the production process, and can be produced on demand, thereby reducing mold opening costs and achieving the purpose of flexible production. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the structure and dimensions of the snap-fit ​​part; (unit: mm; left side is a sectional view).

[0013] Figure 2 Diagram showing the mold parting method for snap-fit ​​parts;

[0014] Figure 3 This is a schematic diagram of the structure of this utility model; (to show the internal structure of the flow channel, the flow channel template forming the flow channel is omitted in this figure)

[0015] Figure 4 This is a schematic diagram of the flow channel structure of this utility model; (partially showing the structure of the flow channel and the nozzle insert on the flow channel template, omitting the conventional edge structure of the flow channel template)

[0016] Figure 5 This is a partial structural diagram showing the working state of the water inlet insert when the main flow channel of this utility model is blocked; (the dashed arrow indicates the direction of glue inlet flow).

[0017] Figure 6 This is a partial structural diagram of the sprue insert in operation when the main flow channel of this utility model is open; (the dashed arrows indicate the direction of glue flow).

[0018] Figure 7 This is a schematic diagram of the internal structure of the sprue insert; (partial view, omitting the edge structure of the flow channel template)

[0019] Reference numerals: 1-Moving mold cavity, 2-Slider seat, 3-Wear-resistant sheet, 4-Flow channel, 41-Main inlet, 42-Main flow channel, 43-Branch flow channel, 44-Outlet, 5-Gate insert, 51-Main flow channel opening, 52-Branch flow channel opening, 53-Flow channel sealing platform, 54-Positioning bead, 55-Hanging platform, 56-Hex wrench position, 6-Positioning bead anti-rotation groove, 7-Machining reference position, 8-Slider core, 9-Molded part, 10-Flow channel template. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Example: A multi-cavity mold with a runner and gate insert, structural reference. Figure 3 , Figure 4 and Figure 6 As shown, the device includes a runner template 10, in which runners 4 are arranged. Its features include: a moving mold cavity 1, with several P-type part injection cavities at the front and several L-type part injection cavities at the rear; the runners 4 include a main inlet 41 connected to two main runners 42, one of which guides the P-type part injection cavities through a branch runner 43 and a branch outlet 44, and the other guides the L-type part injection cavities through the branch runner 43; a sprue insert 5 is provided between the main runners 42 and the branch runners 43; slider seats 2 are provided on the left and right sides of the moving mold cavity 1, with wear-resistant plates 3 on the outer side of the slider seats 2, and several slider cores 8 corresponding to the P-type and L-type part injection cavities on the outer side of the slider seats 2.

[0022] How to use this mold: When the mold is closed, the slider seat 2 drives the slider core 8 to move towards the moving mold cavity 1. After closing, the slider core 8, the moving mold cavity 1, and the fixed mold cavity form a closed space for the part to be produced. After the equipment injects the adhesive, the adhesive reaches the flow channel. Figure 2 After the part enters the mold through the injection port, it enters the closed space of the mold and solidifies to form the required part. After the part is formed, the mold opens and the slider seat 2 drives the slider core 8 to move in the opposite direction to the moving mold cavity 1, detaching from the formed part and ejecting it through the equipment to obtain the required part.

[0023] Among them, the wear-resistant plate 3 is fixed to the slider seat 2 to ensure the overall life of the mold.

[0024] The sprue insert 5 is disposed in the flow channel template. The sprue insert 5 is cylindrical and has a main flow channel opening 51, a branch flow channel opening 52, and a flow channel sealing platform 53 at the top. The top center of the sprue insert 5 has an internal hex wrench position 56. The middle part of the sprue insert 5 has a positioning bead hole with a positioning bead 54. The bottom of the sprue insert 5 has a hanging platform 55. The flow channel template has a positioning bead anti-rotation groove 6 at the height of the positioning bead hole and a processing reference position 7 at the height of the hanging platform 55.

[0025] The internal hex wrench slot is 56mm deep and 3mm deep.

[0026] The rationale and function of the above-mentioned gate insert 5 structure are as follows: the gate insert 5 needs to be rotatable, so it is designed as a cylinder; a hanging platform 55 is set at the lower end to prevent the gate insert from moving during production; the upper flow channel of the gate insert is ensured to be consistent with the flow channel of the part by using the machining reference position 7 as a reference for machining; during production, the gate insert 5 is rotated at the hex wrench position 56 as needed to match the positioning bead 54 of the insert with the anti-rotation groove 6 of the positioning bead, so that flexible production without mold change can be achieved.

[0027] The key to this invention lies in the use of the sprue insert 5. The sprue insert 5 is set on the runner of a multi-cavity mold. By directly adjusting (using the Allen wrench position 56) the sprue insert 5, the main runner 42 can be opened or blocked, thereby ensuring that the multi-cavity mold does not need to be changed during the production process and can be produced on demand, thereby reducing mold opening costs and achieving the purpose of flexible production.

[0028] Reference for the blocking status of the above main flow channel 42 Figure 4 As shown, by adjusting the nozzle insert 5 using the Allen wrench position 56, the sealing platform 53 blocks the main flow channel 42; the main flow channel 42 is open (reference). Figure 5 As shown, by adjusting the water inlet insert 5 using the hex wrench position 56, the main flow channel port 51 is connected to the main flow channel 42, and the branch flow channel port 52 is connected to the branch flow channel 43.

[0029] When the main flow channel 42 is blocked, the main inlet 41 cannot inject glue into the branch flow channel 43; when it is open, the glue injected from the main inlet 41 enters the injection cavity of the corresponding part in sequence through the main flow channel 42, the main flow channel opening 51, the branch flow channel opening 52, the branch flow channel 43 and the branch outlet 44, thus realizing the production of the part.

[0030] After the above-mentioned mold was designed, manufactured and put into production, more than 60,000 molds were produced. The molds were inspected and found to be operating normally and conveniently, achieving good economic benefits. They have now been promoted for use in corresponding new product projects.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-cavity mold with a runner and sprue insert, comprising a runner template (10) having runners (4) arranged therein, characterized in that: The moving mold cavity (1) includes a moving mold cavity (1), which has a number of P-type part injection cavities at the front and a number of L-type part injection cavities at the rear. The flow channel (4) includes a main inlet (41), which connects to two main flow channels (42). One main flow channel (42) guides each P-type part injection cavity through a branch flow channel (43) and a branch outlet (44), while the other main flow channel (42) guides each L-type part injection cavity through a branch flow channel (43). A sprue insert (5) is provided between the main flow channel (42) and the branch flow channel (43). Slide seats (2) are provided on the left and right sides of the moving mold cavity (1), and a number of slide cores (8) corresponding to the P-type part injection cavity and the L-type part injection cavity are provided on the outside of the slide seats (2).

2. The multi-cavity mold with a flow channel and sprue insert as described in claim 1, characterized in that: The sprue insert (5) is set in the flow channel template. The sprue insert (5) is cylindrical and has a main flow channel opening (51), a branch flow channel opening (52), and a flow channel sealing platform (53) at the top. The top center of the sprue insert (5) has an internal hex wrench position (56). The middle part of the sprue insert (5) has a positioning bead hole, and a positioning bead (54) is provided in the positioning bead hole. The bottom of the sprue insert (5) has a hanging platform (55). The flow channel template has a positioning bead anti-rotation groove (6) at the height of the positioning bead hole and a processing reference position (7) at the height of the hanging platform (55).

3. The multi-cavity mold with a flow channel and sprue insert as described in claim 2, characterized in that: The depth of the internal hex wrench position (56) is 3mm.

4. The multi-cavity mold with a flow channel and sprue insert as described in claim 1, characterized in that: A wear-resistant plate (3) is provided on the outer side of the slider seat (2).

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