Color changing splitter plate

Abstract

The utility model discloses a color changing splitter plate which comprises a plate body, an insert, a plug and a heating wire installed on the plate body, the plate body is provided with a main runner and a lower runner, the plate body is further provided with an upper installation groove and a side installation groove, the upper installation groove is coaxial and communicated with the lower runner, the side installation groove is coaxial and communicated with the main runner, the insert is arranged in the upper installation groove, and the plug is arranged in the side installation groove. The insert is provided with an L-shaped runner used for communicating the main runner and the lower runner, at least the bent position of the L-shaped runner is in a cambered surface shape, the plug is made of heat conduction materials and arranged in the side installation groove, and at least the end of the plug abuts against the insert. The arc-surface-shaped L-shaped runner on the insert can prevent molten materials from being hidden or accumulated in the insert, and the insert is heated by means of the plug with an excellent heat conduction effect, so that the molten materials flowing through the L-shaped runner have better flowability, and the color changing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding devices, and particularly relates to a color-changing manifold plate. Background Art

[0002] In the field of injection molding, the hot runner manifold plate is the central component of the hot runner system. It distributes the molten material transmitted by the main runner nozzle to each injection point nozzle through the sub-runners. In this process, the most important thing is that the flow path direction of the manifold plate and the temperature uniformity of the manifold plate determine the fluidity of the material in the mold cavity. At present, cost reduction is being carried out in various industries. Especially in the 3C industry, in order to reduce the mold cost and improve production efficiency, the same set of molds is used to inject products of different colors. This requires higher fluidity of the molten material in the hot runner, especially in the manifold plate.

[0003] In the prior art, in order to make the molten material flow smoothly when changing direction in the manifold plate and avoid material accumulation or hiding, an insert with an arc-shaped connecting flow path can be used for diversion. For example, a diversion insert and a color-changing sandwich hot runner structure with the application number 202122624516.1 disclose that the diversion insert can connect the hot nozzle and the manifold plate, and the bent flow path is provided with an arc section. The arc section can avoid the residue of the injection plastic and ensure that the injection plastic in the bent flow path is washed clean. It solves the problem of smooth flow direction change of the molten material, but the fluidity of the material is also related to the molten state of the material. For the molten material in the insert, a better heating and heat preservation effect is also required. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a color-changing manifold plate. The arc-shaped L-shaped flow path on the insert can avoid the hiding or accumulation of the molten material in the insert, and the insert is heated by a plug made of a material with excellent heat conduction, so that the molten material flowing through the L-shaped flow path has better fluidity and improves the color-changing effect.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is: a color-changing manifold plate, including a plate body, an insert, a plug, and a heating wire installed on the plate body. The plate body is provided with a main runner and a downstream runner. The plate body is also provided with an upper installation groove coaxially connected and communicated with the downstream runner, and a side installation groove coaxially connected and communicated with the main runner. The insert is arranged in the upper installation groove. The insert is provided with an L-shaped flow path for connecting the main runner and the downstream runner. At least the bending part of the L-shaped flow path has an arc shape. The plug is made of a heat-conducting material and is arranged in the side installation groove, and at least the end is in contact with the insert.

[0006] As a further optimization, the L-shaped flow channel includes a horizontal flow channel, a vertical flow channel, and an arc-shaped flow channel connecting the two. The horizontal flow channel and the vertical flow channel are respectively connected to the main flow channel and the downstream flow channel, and at least the end of the plug abuts against the part of the insert with the arc-shaped flow channel.

[0007] As a further optimization, a positioning plate is provided at the upper end of the insert, which can position the insert in the upper mounting groove.

[0008] As a further optimization, a positioning section is provided on the positioning plate. Through the setting of the positioning section, the correct installation position of the insert can be ensured, and it is guaranteed that both the main flow channel and the downstream flow channel can be accurately connected to the L-shaped flow channel.

[0009] As a further optimization, a positioning groove is provided on the insert. The positioning groove is arranged on the positioning plate, and the insert can be fixed by inserting a pin into the positioning groove and the plate body.

[0010] As a further optimization, the plug abuts against one end of the insert far from the main flow channel and is coaxially arranged with the main flow channel, so that heat can be transferred to the L-shaped flow channel at a closer distance.

[0011] As a further optimization, an extension part is provided on the plug, a positioning hole is provided on the insert, and the extension part is embedded in the positioning hole, so that the plug can be closer to the L-shaped flow channel and transfer heat more efficiently.

[0012] As a further optimization, an inclined section is provided on the extension part, a positioning surface matching the inclined section is provided in the positioning hole, and the inclined section abuts against the positioning surface. The inclined section can wrap the bending part of the L-shaped flow channel as large as possible, which is beneficial to heat transfer.

[0013] More specifically, the inclined section wraps one side of the arc-shaped flow channel far from the main flow channel.

[0014] As a further optimization, the material of the plug is aluminum, copper or silver, preferably copper, which has excellent heat conduction effect.

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

[0016] 1. The arc-shaped L-shaped flow channel on the insert can prevent the molten material from hiding or accumulating in the insert, which is beneficial to material color change.

[0017] 2. The insert is heated by the plug with better heat conduction effect, so that the molten material flowing through the L-shaped flow channel has better fluidity, and the material color change effect is further improved. Description of the Drawings

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

[0019] Figure 2 This is a schematic structural diagram of the insert and the plug of the present utility model installed on the plate body.

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

[0021] Figure 4 This is a structural diagram of the insert of the present utility model.

[0022] Figure 5 This is an installation schematic diagram of the insert and the plug of the present utility model.

[0023] Figure 6 This is an installation schematic diagram of the insert and the plug in another embodiment of the present utility model. Detailed implementation manners

[0024] The following are specific embodiments of the present utility model and in combination with the accompanying drawings, the technical solutions of the present utility model are further described, but the present utility model is not limited to these embodiments.

[0025] As Figures 1 to 3 shown, a color-changing manifold plate includes a plate body 1, an insert 2, a plug 3, and a heating wire 13 installed on the plate body 1. The plate body 1 is provided with a main runner 101 and a downstream runner 102, which are respectively used for diverting the molten material entering the plate body 1 and flowing into the nozzle through the downstream runner 102. The plate body 1 is further provided with an upper mounting groove 12 coaxial and communicating with the downstream runner 102, and a side mounting groove 11 coaxial and communicating with the main runner 101. The insert 2 is disposed in the upper mounting groove 12. The insert 2 is provided with an L-shaped runner 20 for communicating the main runner 101 and the downstream runner 102. At least the bending portion of the L-shaped runner 20 has an arc shape. The plug 3 is made of a heat-conducting material, preferably copper material with good heat-conducting effect. It is disposed in the side mounting groove 11, and at least the end abuts against the insert 2.

[0026] In the present utility model, the molten material enters the main flow channel 101 through the feed hole 100 on the plate body 1, and flows into the downstream flow channel 102 through the L-shaped flow channel 20 in the insert 2. Since the L-shaped flow channel 20 has an arc-shaped surface at its bending portion, the molten material can smoothly convert the flow direction in the vertical direction. The existence of the arc-shaped surface can reduce the existence of right-angle structures or angular structures in the L-shaped flow channel 20, avoiding the hiding or accumulation of the molten material therein, and preventing the influence of the remaining material on the injection molding effect after material replacement, which is beneficial to achieving material color change; moreover, on the basis of the original heating wire 13 for heating, by providing a plug 3 made of a heat-conducting material that abuts against the insert 2, especially against the arc-shaped bending portion of the L-shaped flow channel 20, the heating and heat preservation effect of the bending portion of the L-shaped flow channel 20 can be improved, enabling the molten material flowing through this part to have a better molten state and fluidity, and also avoiding the accumulation of the molten material here, which is beneficial to achieving material color change.

[0027] The present utility model can avoid the hiding or accumulation of the molten material in the insert 2 by converting the flow direction of the molten material through the L-shaped flow channel with an arc-shaped surface on the insert 2, which is beneficial to material color change. And by heating the insert 2 with the plug 3 having better heat conduction effect, the molten material flowing through the L-shaped flow channel 20 has better fluidity, which can further improve the material color change effect.

[0028] Combined Figure 4 As shown, the specific structure of the L-shaped flow channel 20 includes a horizontal flow channel 201, a vertical flow channel 202, and an arc-shaped flow channel 203 connecting the two. The horizontal flow channel 201 and the vertical flow channel 202 are respectively connected to the main flow channel 101 and the downstream flow channel 102. The end of the plug 3 abuts against the part of the insert 2 having the arc-shaped flow channel 203, which can conduct heat better for this part and improve the molten state and fluidity of the molten material at the flow direction conversion point.

[0029] A positioning plate 21 is provided at the upper end of the insert 2, and a positioning section 211 is provided on the positioning plate 21, which can accurately position the insert 2 in the upper mounting groove 12, so that the horizontal flow channel 201 and the vertical flow channel 202 are respectively accurately connected to the main flow channel 101 and the downstream flow channel 102.

[0030] A positioning groove 200 is provided on the insert 2. The positioning groove 200 can be matched with the notch on the plate body 1 to form a column cavity, and the insert 2 is fixed to the plate body 1 through a pin column assembled into the column cavity.

[0031] As Figure 5 shown, in an embodiment of the present utility model, the plug 3 abuts against one end of the insert 2 far from the main flow channel 101 and is coaxially arranged with the main flow channel 101.

[0032] As Figure 6As shown, in another embodiment of the present utility model, the plug 3 is provided with an extension portion 31, and the insert 2 is provided with a positioning hole 204. The extension portion 31 is embedded in the positioning hole 204. Through the arrangement of the extension portion 31, heat can be transferred to the L-shaped runner at a closer distance, ensuring the molten state and fluidity of the molten material at the bend of the L-shaped runner.

[0033] Furthermore, the extension portion 31 is provided with an inclined plane 311, and the positioning hole 204 is provided with a positioning surface matching the inclined plane 311. The inclined plane 311 abuts against the positioning surface. The inclined plane 311 can wrap the bend of the L-shaped runner 20 over a large area through the positioning surface, improving the fluidity of the molten material flowing through this place.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model 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 utility model or exceed the scope defined by the appended claims.

Claims

1. A color-changing manifold, characterized in that: It includes a plate body, an insert, a plug, and a heating wire installed on the plate body, wherein the plate body is provided with a main flow channel and a lower flow channel, and the plate body is also provided with an upper mounting groove coaxial with and connected to the lower flow channel, and a side mounting groove coaxial with and connected to the main flow channel, the insert is arranged in the upper mounting groove, and the insert is provided with an L-shaped flow channel for connecting the main flow channel and the lower flow channel, at least the bending part of the L-shaped flow channel has an arc surface, the plug is made of heat-conducting material, which is arranged in the side mounting groove, and at least its end portion abuts against the insert.

2. The color-changing manifold according to claim 1, characterized in that: The L-shaped flow channel includes a horizontal flow channel, a vertical flow channel, and an arc flow channel connecting the two. The horizontal flow channel and the vertical flow channel are respectively connected to the main flow channel and the lower flow channel. At least the end of the plug abuts against the part of the insert with the arc flow channel.

3. The color-changing manifold according to claim 1, characterized in that: A positioning plate is provided at the upper end of the insert.

4. The color-changing manifold according to claim 3, characterized in that: The positioning plate is provided with a positioning cut surface.

5. The color-changing manifold according to claim 1 or 3, characterized in that: The insert is provided with a positioning groove.

6. The color-changing manifold according to claim 2, characterized in that: The plug is in contact with an end of the insert away from the main flow channel and is coaxially arranged with the main flow channel.

7. The color-changing manifold according to claim 6, characterized in that: The plug is provided with an extension portion, the insert is provided with a positioning hole, and the extension portion is embedded in the positioning hole.

8. The color-changing manifold according to claim 7, characterized in that: The extending portion is provided with a chamfered surface, the positioning hole is provided with a positioning surface matching the chamfered surface, and the chamfered surface abuts against the positioning surface.

9. The color-changing manifold according to claim 8, characterized in that: The chamfered surface wraps around a side of the arc-shaped flow channel away from the main flow channel.

10. The color-changing manifold according to claim 1, characterized in that: The plug is made of aluminum, copper or silver.

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