Injection mold sprue hot runner water cooling protective sleeve structure

Abstract

The utility model provides an injection mold sprue hot runner water cooling protective sleeve structure which is characterized by comprising a pipe body penetrating into a sprue, a limiting slope is arranged on the inner wall of the pipe body, a circulation hole is formed in the center of the limiting slope, the circulation hole is communicated with the end face of the pipe body, and a water inlet is formed in the end face of the pipe body. A cooling gap is formed between the inner wall of the pipe body and the injection pipe, a supporting plate is fixedly connected to the outer wall of the end, away from the circulation hole, of the pipe body, a plurality of positioning holes are formed in the supporting plate and are close to the edge of the supporting plate, and water is injected into the cooling gap, so that the purposes of accelerating resin curing and improving the resin curing speed are achieved. And the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a water-cooling protection sleeve structure for the hot runner of an injection mold gate. Background Technique

[0002] At present, a Chinese patent with the authorization announcement number of CN208584758U discloses an injection mold, which includes a cavity, a gate and a gate cutting device, and the gate is located on one side of the cavity. The gate is arranged at the through-hole position of the product, and the gate and the cavity are sealed and separated by the gate cutting device before the cooling process starts. The part of the gate cutting device protruding into the cavity forms the inner surface of the through-hole of the injection product, so as to achieve the purpose of no gate on the surface of the injection product.

[0003] However, since the gate is directly opened on the injection mold, after the injection pipe of the injection molding machine finishes injection, it is impossible to accelerate the cooling and solidification time of the resin, which affects the production efficiency. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a water-cooling protection sleeve structure for the hot runner of an injection mold gate, and the production efficiency is improved by setting a cooling gap.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a water-cooling protection sleeve structure for the hot runner of an injection mold gate, including a pipe body penetrating through the gate, a limiting inclined surface is opened on the inner wall of the pipe body, a circulation hole is opened at the center of the limiting inclined surface, the circulation hole is communicated with the end surface of the pipe body, there is a cooling gap between the inner wall of the pipe body and the injection pipe, a support plate is fixedly connected to the outer wall of the end of the pipe body away from the circulation hole, and a plurality of positioning holes are opened on the support plate, and the positioning holes are close to the edge of the support plate.

[0006] By implementing the above technical solution, through the arrangement of a plurality of positioning holes, the pipe body can be stably fixed on the mold. The injection pipe is inserted into the pipe body and the end of the injection pipe is abutted against the limiting inclined surface of the pipe body, so that the injection pipe is not easy to move, thereby forming a cooling gap between the injection pipe and the side wall of the pipe body. Cooling water is injected into the cooling gap to accelerate the cooling and solidification time of the resin and improve the production efficiency.

[0007] As a preferred solution of the utility model, a partition board is arranged on the inner wall of the pipe body, the length direction of the partition board is parallel to the axial direction of the pipe body, the partition board is slidably connected with a connecting plate for abutting against the outer wall of the injection pipe through an elastic structure, the two partition boards are evenly distributed along the axis of the pipe body, and the two partition boards divide the cooling gap into a water inlet area and a water outlet area.

[0008] To implement the above technical solution, after the cooling water enters the pipe body from the water inlet area, the cooling water is blocked by the partition so that it flows in the direction close to the flow hole and enters the water outlet area, and is then discharged from the water outlet area to facilitate the circulation of the cooling water. The setting of the connecting plate enhances the blocking effect of the partition so that the cooling water can bypass the injection tube.

[0009] As a preferred solution of the utility model, the elastic structure includes a placement groove, an elastic member, a fixed plate and an anti-drop plate. The placement groove is opened on the side wall of the partition, and the two anti-drop plates are fixed on both sides of the connecting plate. The connecting plate and the anti-drop plate are both slidably connected to the placement groove. One end of the elastic member is fixedly connected to the inner wall of the placement groove, and the other end is fixedly connected to the connecting plate. The fixed plate is fixedly connected to the opening of the placement groove and is used to interfere with the anti-drop plate.

[0010] To implement the above technical solution, the anti-slip plate is fixed to the side wall of the connecting plate, the two ends of the elastic member are fixedly connected to the connecting plate and the inner wall of the placement groove respectively, the anti-slip plate and the connecting plate are slidably connected to the placement groove, and then the fixing plate is fixed to the opening of the placement groove to contact the anti-slip plate, so that the connecting plate cannot fall out of the placement groove.

[0011] As a preferred solution of the utility model, a guiding slope for contacting with the injection tube is provided at one end of the connecting plate away from the flow hole.

[0012] To implement the above technical solution, during the process of inserting the injection tube into the tube body, the end of the injection tube collides with the guiding slope. Through the guiding effect of the guiding slope, the connecting plate can move toward the placement groove by itself, which makes installation convenient.

[0013] As a preferred solution of the utility model, a limiting groove is provided on the inner wall of the tube body, a limiting plate is provided on the side of the partition away from the connecting plate, and the limiting plate is located in the limiting groove and fixed in the limiting groove by a magnetic component.

[0014] To implement the above technical solution, the partition is placed in the tube body, the limit plate is placed in the limit groove, and the limit plate is fixed in the limit groove by the magnetic component to achieve the purpose of easy installation.

[0015] As a preferred solution of the utility model, the magnetic assembly includes a first magnet and a second magnet, the first magnet is fixed in a limiting groove, the second magnet is fixed on a limiting plate, and the first magnet is used to interfere with and attract the second magnet.

[0016] To implement the above technical solution, the limit plate is placed in the limit groove, the first magnet and the second magnet are in contact with each other, and the limit plate is positioned by the action of magnetic attraction.

[0017] As a preferred embodiment of the present utility model, one end of the pipe body away from the support plate extends outward to form a limiting portion, and an inclined demolding slope is provided on the side wall of the limiting portion.

[0018] Implementing the above technical solution reduces the demolding resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the external structure of the present utility model;

[0020] Figure 2 is a schematic diagram showing the structure of the support plate;

[0021] Figure 3 is a schematic cross-sectional view showing the present utility model;

[0022] Figure 4 is a schematic diagram showing the structure of the partition plate.

[0023] Reference numerals: 1, pipe body; 11, limiting slope; 12, circulation hole; 2, injection pipe; 21, cooling gap; 3, limiting portion; 31, demolding slope; 4, partition plate; 41, limiting groove; 42, limiting plate; 5, magnetic assembly; 51, first magnet; 52, second magnet; 6, elastic structure; 61, placement groove; 62, elastic member; 63, fixing plate; 64, anti-detachment plate; 7, connecting plate; 71, guiding slope; 8, support plate; 81, positioning hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further details the specific embodiments of the present utility model in conjunction with the drawings, so that the technical solutions of the present utility model are easier to understand and master.

[0025] An injection mold gate hot runner water cooling protection sleeve structure includes a pipe body 1 penetrating into the gate. A limiting slope 11 is provided on the inner wall of the pipe body 1, and a circulation hole 12 is provided at the center of the limiting slope 11. The circulation hole 12 communicates with the end face of the pipe body 1.

[0026] When the injection pipe 2 penetrates into the pipe body 1 and abuts against the limiting slope 11, a cooling gap 21 is formed between the inner wall of the pipe body 1 and the injection pipe 2. A limiting portion 3 extends outward at one end of the pipe body 1 close to the circulation hole 12, and an inclined demolding slope 31 is provided on the side wall of the limiting portion 3.

[0027] A partition plate 4 is provided on the inner wall of the pipe body 1. The length direction of the partition plate 4 is parallel to the axial direction of the pipe body 1, and the two partition plates 4 are evenly distributed along the axis of the pipe body 1. The two partition plates 4 and the injection pipe 2 divide the cooling gap 21 into a water inlet area and a water outlet area. A limiting groove 41 is opened on the inner wall of the pipe body 1, and a limiting plate 42 is integrally provided on the side wall of the partition plate 4. The limiting plate 42 is located in the limiting groove 41 and is fixed in the limiting groove 41 by a magnetic force assembly 5.

[0028] The magnetic force assembly 5 includes a first magnet 51 and a second magnet 52. The first magnet 51 is fixed in the limiting groove 41, and the second magnet 52 is fixed on the limiting plate 42. The first magnet 51 is used to contact and attract the second magnet 52. Both the first magnet 51 and the second magnet 52 are magnets.

[0029] The partition plate 4 is slidably connected with a connecting plate 7 for contacting the outer wall of the injection pipe 2 through an elastic structure 6. The elastic structure 6 includes a placement groove 61, an elastic member 62, a fixing plate 63 and an anti-disengagement plate 64. The placement groove 61 is opened on the side wall of the partition plate 4 on the side opposite to the limiting plate 42, and the two anti-disengagement plates 64 are respectively fixed on both sides of the connecting plate 7.

[0030] The connecting plate 7 and the anti-disengagement plate 64 are both slidably connected in the placement groove 61. The elastic member 62 is a spring. One end of the elastic member 62 is fixedly connected to the inner wall of the placement groove 61, and the other end is fixedly connected to the connecting plate 7. The fixing plate 63 is fixedly connected to the opening of the placement groove 61 and is used to contact the anti-disengagement plate 64 to prevent the connecting plate 7 from disengaging from the placement groove 61.

[0031] A guiding inclined surface 71 for contacting the injection pipe 2 is opened at one end of the connecting plate 7 far from the flow-through hole 12.

[0032] A support plate 8 is fixedly connected to the outer wall of the end of the pipe body 1 far from the flow-through hole 12. A plurality of positioning holes 81 are opened on the support plate 8, and the positioning holes 81 are close to the edge of the support plate 8.

[0033] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A water cooling protective cover structure for a hot runner of an injection mold gate, characterized by: The invention comprises a tube body (1) which penetrates into a gate, wherein a limiting inclined surface (11) is provided on the inner wall of the tube body (1), a flow hole (12) is provided at the center of the limiting inclined surface (11), the flow hole (12) is communicated with the end face of the tube body (1), a cooling gap (21) is provided between the inner wall of the tube body (1) and the injection tube (2), a support plate (8) is fixedly connected to the outer wall of the end of the tube body (1) away from the flow hole (12), a plurality of positioning holes (81) are provided on the support plate (8), and the positioning holes (81) are close to the edge of the support plate (8).

2. The water cooling protective cover structure for the hot runner of an injection mold gate according to claim 1 is characterized in that: A partition (4) is provided on the inner wall of the tube body (1), the length direction of the partition (4) is parallel to the axial direction of the tube body (1), the partition (4) is slidably connected to a connecting plate (7) for contacting the outer wall of the injection tube (2) through an elastic structure (6), the two partitions (4) are evenly distributed along the axis of the tube body (1), and the two partitions (4) divide the cooling gap (21) into a water inlet area and a water outlet area.

3. The water cooling protective sleeve structure for the hot runner of an injection mold gate according to claim 2 is characterized in that: The elastic structure (6) comprises a placement groove (61), an elastic member (62), a fixing plate (63) and an anti-slip plate (64); the placement groove (61) is provided on the side wall of the partition (4); the two anti-slip plates (64) are fixed on both sides of the connecting plate (7); the connecting plate (7) and the anti-slip plate (64) are both slidably connected in the placement groove (61); one end of the elastic member (62) is fixedly connected to the inner wall of the placement groove (61), and the other end is fixedly connected to the connecting plate (7); the fixing plate (63) is fixedly connected to the opening of the placement groove (61) and is used to contact the anti-slip plate (64).

4. The water cooling protective sleeve structure for the hot runner of an injection mold gate according to claim 3 is characterized in that: The end of the connecting plate (7) away from the circulation hole (12) is provided with a guiding inclined surface (71) for contacting with the injection tube (2).

5. The water cooling protective sleeve structure for the hot runner of an injection mold gate according to claim 2 is characterized in that: A limiting groove (41) is provided on the inner wall of the tube body (1), and a limiting plate (42) is provided on the side of the partition plate (4) away from the connecting plate (7). The limiting plate (42) is located in the limiting groove (41) and is fixed in the limiting groove (41) through a magnetic component (5).

6. The water cooling protective sleeve structure for the hot runner of an injection mold gate according to claim 5 is characterized in that: The magnetic assembly (5) comprises a first magnet (51) and a second magnet (52), wherein the first magnet (51) is fixed in a limiting groove (41), and the second magnet (52) is fixed on a limiting plate (42), and the first magnet (51) is used to contact and attract the second magnet (52).

7. The water cooling protective cover structure for the hot runner of an injection mold gate according to claim 1 is characterized in that: One end of the tube body (1) away from the support plate (8) extends outward to form a limiting portion (3), and an inclined demoulding slope (31) is provided on the side wall of the limiting portion (3).

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