Multi-layer runner structure of splitter plate

Abstract

The utility model discloses a multi-layer runner structure of a splitter plate, which comprises a plate body, n runner layers are arranged in the plate body, n is greater than or equal to 3, 2 (n-1) runners are arranged in each runner layer, a plurality of runners in the same runner layer are not communicated, and two ends of each runner are communicated with the middle of the runner in the lower runner layer through vertical holes; the upper end of the plate body is provided with a feeding port, the feeding port is communicated with the middle of the runner in the uppermost runner layer, the lower end of the plate body is provided with 2n discharging ports which are linearly arranged, and the two ends of the runner in the lowermost runner layer are connected with the multiple discharging ports in a one-to-one mode. On the premise that the length and the thickness of the plate body are not changed, the multiple discharging ports are linearly arranged, the requirement for arrangement of the mold can be met, injection molding of multiple small products can be achieved, the stroke of molten materials in different discharging ports is equal through graded arrangement of the three layers of runners, and the product quality is improved. And the consistency and uniformity of injection molding of the product are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution plates for injection molding, and particularly relates to a multi-layer runner structure of a distribution plate. Background Art

[0002] The hot runner distribution plate is the central component of the hot runner system. It distributes the molten plastic material transmitted by the main runner nozzle to each injection point nozzle through the runner. In this process, the most important thing is the runner direction of the distribution plate and the temperature uniformity of the distribution plate, which determine the filling balance in the mold cavity.

[0003] At present, in the injection molding industry, in order to reduce the mold cost and improve the production efficiency, multiple small products are placed in the same set of molds, and direct injection is carried out on the product surface, forming multiple products and multiple hot nozzles in a line. This requires higher balance of the runner of the distribution plate. In the existing multi-layer runner plate designs, such as a multi-layer distribution plate with the application number 202122973534.0, which discloses an upper distribution plate and a lower distribution plate that are attached to each other up and down, thus forming a first runner and a second runner that do not interfere with each other and having multiple layers of runners. However, in the case of a specific plate body, each discharge port is not on the same straight line and cannot solve the above problems. Another example is the multi-layer runner distribution plate with inserts, hot runner system and insert manufacturing method with the application number 201110160340.7, which discloses that the discharge ports can be arranged in a straight line, but its realization necessarily requires the premise of lengthening the distribution plate and cannot be realized on the premise of a certain length of the distribution plate body, nor can it solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-layer runner structure of a distribution plate. Without changing the length and thickness of the plate body, multiple discharge ports are arranged in a straight line, which can meet the layout settings of the mold cavity, realize the injection molding of multiple small products, and through the hierarchical setting of three layers of runners, the travel of the molten material in different discharge ports is made equal, improve the balance of the runners in the distribution plate, and ensure the consistency and uniformity of product injection molding.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is: a multi-layer runner structure of a distribution plate, including a plate body, wherein n layers of runner layers are arranged in the plate body, n≥3, and 2 runners of its corresponding layer number are arranged in each runner layer. Multiple runners in the same runner layer are not connected to each other, and both ends of the runner are connected to the middle of the runner in the runner layer below through vertical holes; an inlet is arranged at the upper end of the plate body, the inlet is connected to the middle of the runner in the uppermost runner layer, and 2 discharge ports arranged in a straight line are arranged at the lower end of the plate body, and both ends of the runner in the lowermost runner layer are connected to the multiple discharge ports one by one. (n-1) runners, multiple runners in the same runner layer are not connected to each other, and both ends of the runner are connected to the middle of the runner in the runner layer below through vertical holes; an inlet is arranged at the upper end of the plate body, the inlet is connected to the middle of the runner in the uppermost runner layer, and 2 n discharge ports arranged in a straight line are arranged at the lower end of the plate body, and both ends of the runner in the lowermost runner layer are connected to the multiple discharge ports one by one.

[0006] As a further optimization, the distance between the discharge ports at the middle position and the discharge ports on both sides thereof is equal, ensuring that the discharge ports are evenly distributed on the plate body.

[0007] As a further optimization, the flow channels in different flow channel layers are not parallel to each other.

[0008] As a further optimization, it is preferable that the number of layers n of the flow channel layer is 3. The three-layer flow channel layer can prevent the flow distribution plate from being too thick.

[0009] As a further optimization, the flow channels in the third flow channel layer are V-shaped; the flow channels in the first flow channel layer and the second flow channel layer are linear.

[0010] As a further optimization, the angle of the flow channels in the third flow channel layer is α, and 60° ≤ α ≤ 80°.

[0011] As a further optimization, multiple flow channels in the third flow channel layer are arranged alternately in positive and negative directions. When the length of the plate body is fixed, it is ensured that eight discharge ports are arranged in a straight line.

[0012] As a further optimization, when the flow channels in the third flow channel layer are V-shaped, the corners thereof are communicated with the ends of the flow channels in the second flow channel layer.

[0013] As a further optimization, the vertical projection of the central axis of the feed port is located on the connection line of the centers of multiple discharge ports, realizing feeding in the middle and discharging in the middle of the plate body.

[0014] As a further optimization, a wire groove for accommodating a heating wire is provided on the plate body, which can improve the heating performance of the plate body for the molten material.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. Without changing the length and thickness of the plate body, multiple discharge ports are arranged in a straight line, which can meet the layout settings of the mold cavity and / or the product, and realize the injection molding of multiple small products;

[0017] 2. Through the hierarchical setting of the three-layer flow channels, the travel of the molten material in different discharge ports is made equal, the balance of the flow channels in the flow distribution plate is improved, and the consistency and uniformity of the product injection molding are ensured. Description of the Drawings

[0018] Figure 1 is a structural diagram of the utility model.

[0019] Figure 2 is a structural diagram of the utility model from another perspective.

[0020] Figure 3 This is a structural diagram of the bottom view of the present utility model.

[0021] Figure 4 This is a schematic diagram of the shape of the first flow channel layer in an embodiment of the present utility model.

[0022] Figure 5 This is a cross-sectional schematic diagram of the first flow channel layer in an embodiment of the present utility model.

[0023] Figure 6 This is a schematic diagram of the shape of the second flow channel layer in an embodiment of the present utility model.

[0024] Figure 7 This is a cross-sectional schematic diagram of the second flow channel layer in an embodiment of the present utility model.

[0025] Figure 8 This is a schematic diagram of the shape of the third flow channel layer in an embodiment of the present utility model.

[0026] Figure 9 This is a cross-sectional schematic diagram of the third flow channel layer in an embodiment of the present utility model. Detailed implementation manners

[0027] The following are specific embodiments of the present utility model in combination with the accompanying drawings, and the technical solutions of the present utility model are further described, but the present utility model is not limited to these embodiments.

[0028] As Figures 1 to 3 shown, a multi-layer flow channel structure of a flow splitter plate includes a plate body 1. There are n flow channel layers provided in the plate body 1, where n≥3. In the present utility model, n = 3 is preferably selected, that is, there are three flow channel layers provided in the plate body. By setting three flow channel layers, the number of discharge ports can be increased, but at the same time, it will not cause an increase in the thickness of the flow splitter plate. Combining Figures 4 to 9As shown in the figure, there is a flow channel, namely the first flow channel 10, in the first flow channel layer. The first flow channel 10 is formed through the first horizontal hole 11 on the side wall of the plate body 1. There are two flow channels, namely the second flow channels 20, in the second flow channel layer. The two second flow channels 20 are not connected to each other. The second flow channels 20 are formed through the second horizontal holes 12 on the side wall of the plate body 1. The middle part of the second flow channels 20 is connected to the end of the first flow channel 10 through the first vertical hole 1b. The first vertical hole 1b opens from the upper end face of the plate body, and its lower part realizes the connection between the first flow channel 10 and the second flow channels 20. Its upper part is blocked by a plug during subsequent use. There are four flow channels, namely the third flow channels 30, in the third flow channel layer. The four third flow channels are not connected to each other. The third flow channels 30 are formed through the third horizontal holes 13 on the side wall of the plate body 1. The middle part of the third flow channels 30 is connected to the end of the second flow channels 20 through the second vertical hole 1c. The second vertical hole 1c opens from the upper end face of the plate body, and its lower part realizes the connection between the second flow channels 20 and the third flow channels 30, but does not connect to the first flow channel 10. The upper part of the second vertical hole 1c is blocked by a plug during subsequent use; there is a feed port 1a at the upper end of the plate body 1. The feed port 1a is connected to the middle part of the first flow channel 10. There are eight (i.e., 2 3 ) linearly arranged discharge ports 1d at the lower end of the plate body 1. The two ends of the four third flow channels 30 are connected to the eight discharge ports one by one.

[0029] In the present utility model, without changing the length and thickness of the plate body, the multiple discharge ports are linearly arranged, which can meet the layout settings of the mold cavity and / or the product, and realize the injection molding of multiple small products; and through the hierarchical setting of the three-layer flow channels, the travel of the molten material in different discharge ports is made equal, improving the balance of the flow channels in the manifold plate and ensuring the consistency and uniformity of the product injection molding.

[0030] The distance between the discharge port 1d at the middle position and the discharge ports on its two sides is equal, realizing the uniform distribution of the discharge port positions on the plate body.

[0031] In the present utility model, the first flow channel, the second flow channel, and the third flow channel are not parallel. Through the staggered or oblique setting, when the length of the plate body is certain, the length of the flow channel can be appropriately extended, ensuring the flow channel performance and mixing performance of the molten material in the flow channel, which helps to improve the quality of the injection molded product; and the appropriately increased length of the flow channel can further ensure the time consistency of the discharge from multiple discharge ports.

[0032] Based on the above, therefore, the third flow channels 30 in the third flow channel layer can be set in a V shape, the first flow channels 10 in the first flow channel layer and the second flow channels 20 in the second flow channel layer are still in a straight line shape, and the intersection angle between the two is 20° - 40°. This angle setting can also ensure that on the basis of the third flow channels being in a V shape, the eight discharge ports are on a straight line.

[0033] The angle of the third flow channel 30 is α, where 60° ≤ α ≤ 80°, and the eight third flow channels are arranged in an alternating positive and negative pattern. The appropriate V-shaped angle and the alternating positive and negative arrangement ensure that, when the length of the plate body is fixed, the eight discharge ports are arranged in a straight line and the spacing between the discharge ports is equal.

[0034] When the third flow channel 30 is V-shaped, its corner is connected to the end of the second flow channel 20 to ensure that the flow paths of the material in the third flow channel are equal.

[0035] The vertical projection of the central axis of the feed port 1a is located on the line connecting the centers of the multiple discharge ports 1d, realizing feeding in the middle and discharging in the middle.

[0036] In this embodiment, the feed port 1a is located in the middle of the plate body. The first flow channel 10 realizes flow splitting, the second flow channel 20 realizes oblique guiding of the flow, and the third flow channel 30 is arranged in a V-shaped staggered pattern to communicate with the multiple discharge ports 1d. This can ensure that the discharge ports are arranged in a straight line on a plate body with a relatively small length while ensuring the travel of the molten material, meeting the arrangement requirements of the cavity for the injection nozzle, and improving the balance of the flow channels in the manifold.

[0037] The plate body is provided with a wire groove 101 for accommodating the heating wire, and it can be provided on both the upper and lower end faces of the plate body. After installing the heating wire, it can improve the heating and heat preservation performance of the plate body, thereby improving the flow performance of the material.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A multi-layer flow channel structure of a manifold, characterized in that: The plate body includes n flow channel layers, n ≥ 3, and each flow channel layer has 2 (n-1) The multiple flow channels in the same flow channel layer are not connected, and the two ends of the flow channel are connected to the middle of the flow channel in the flow channel layer below through vertical holes; the upper end of the plate body is provided with a feed port, the feed port is connected to the middle of the flow channel in the uppermost flow channel layer, and the lower end of the plate body is provided with 2 n The two ends of the flow channel in the lowermost flow channel layer are connected to the multiple discharge ports one by one.

2. The multi-layer flow channel structure of the manifold according to claim 1, characterized in that: The distance between the discharge port in the middle and the discharge ports on both sides thereof is equal.

3. The multi-layer flow channel structure of the manifold according to claim 1, characterized in that: The flow channels in different flow channel layers are not parallel.

4. The multi-layer flow channel structure of the manifold according to claim 1, characterized in that: The number of the flow channel layers n=3.

5. The multi-layer flow channel structure of the manifold according to claim 4, characterized in that: The flow channels in the third flow channel layer are V-shaped; the flow channels in the first flow channel layer and the second flow channel layer are straight.

6. The multi-layer flow channel structure of the manifold according to claim 5, characterized in that: The angle of the flow channel in the third flow channel layer is α, 60°≤α≤80°.

7. The multi-layer flow channel structure of the manifold according to claim 5 or 6, characterized in that: The multiple flow channels in the third flow channel layer are arranged alternately in positive and negative directions.

8. The multi-layer flow channel structure of the manifold according to claim 1, characterized in that: The corners of the flow channels in the third flow channel layer are communicated with the ends of the flow channels in the second flow channel layer.

9. The multi-layer flow channel structure of the manifold according to claim 1, characterized in that: The vertical projection of the central axis of the feed port is located on the line connecting the centers of the multiple discharge ports.

10. The multi-layer flow channel structure of the manifold according to claim 1, characterized in that: The plate body is provided with a wire groove for accommodating the heating wire.

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