Quick release mechanism for sprue bush of injection mold

Abstract

The utility model discloses a quick release mechanism for a sprue bush of an injection mold, which comprises an upper mold, a sprue bush body is connected inside the upper mold, a switch mechanism is connected to the upper surface of the upper mold, protective mechanisms are connected to two ends of the sprue bush body, and a handle is connected to the upper surface of the sprue bush body. According to the quick release mechanism for the sprue bush of the injection mold, the limiting plate is rotated to be consistent with the strip-shaped groove in direction, the sprue bush body is arranged in the cavity in a sleeving manner, and after the sprue bush body is placed in place, the switch rod can be driven to be inserted into the positioning hole through the matching between the switch spring and the pull rod, so that the sprue bush body is limited and fixed; meanwhile, the limiting plate is rotated to rotate on the limiting groove, the direction of the strip-shaped groove is perpendicular, secondary limiting and fixing are conducted on the sprue bush body, the situation that the sprue bush body is prone to falling off due to the fact that pressure is too large during injection molding is prevented, bolt fixing is not needed, mounting and dismounting are convenient, and the injection molding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a quick-disassembly mechanism of a sprue sleeve of an injection mold. Background Art

[0002] During the molding process of plastic products, the molten plastic material needs to be injected into the mold from the nozzle of the injection molding machine. However, it is inconvenient to inject the molten plastic material directly into the mold. The sprue bushing is a flow channel that allows the molten plastic material to be injected from the nozzle of the injection molding machine into the mold. It is a metal accessory that connects the molding mold and the injection molding machine.

[0003] A Chinese patent application with application number CN202221575687.8 discloses a gate sleeve, including a tube body and a protective assembly, the tube body having a cavity, the protective assembly including a protective tube, a fixed shaft and a fixed ring, one end of the tube body having a mounting portion, the protective tube having a mounting groove matched with the mounting portion, the tube body being arranged inside the protective tube, the fixed shaft being fixedly connected to the protective tube, the fixed ring being attached to the surface of the protective tube and being rotatably connected to the fixed shaft, and the arrangement of the above structure can prevent the tube body from overheating and cracking, thereby affecting the injection molding effect.

[0004] However, the existing sprue bushings still have some defects. The pressure during injection molding is too high, which easily causes the sprue bushing to fall off. The installation of the sprue bushing is very troublesome, which reduces the injection molding efficiency. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a quick-release mechanism for a sprue sleeve of an injection mold, which aims to solve the problems that excessive pressure during injection molding easily causes the sprue sleeve to fall off, the installation of the sprue sleeve is very troublesome, and the injection molding efficiency is reduced.

[0006] In order to achieve the above-mentioned utility model object, the technical solution adopted by the utility model is: a quick-release mechanism of a sprue sleeve of an injection mold, comprising an upper mold, the interior of the upper mold is connected to a sprue sleeve body, the upper surface of the upper mold is connected to a switch mechanism, both ends of the sprue sleeve body are connected to a protective mechanism, and the upper surface of the sprue sleeve body is connected to a handle;

[0007] The protection mechanism includes a support rod installed on the upper surface of the upper mold, the top end of the support rod is rotatably connected to a limit plate, strip grooves at both ends of the gate sleeve body, the limit plate slides on the strip groove, and a limit groove is provided at the top end of the strip groove.

[0008] Furthermore, the switch mechanism includes a switch compartment installed inside the upper mold, a switch rod is provided on the switch compartment, a pull rod is connected to one end of the switch rod, a switch spring is connected between the pull rod and the switch compartment, and a slide rail is provided on the upper surface of the upper mold, and the pull rod slides on the slide rail.

[0009] Furthermore, an arc-shaped groove is provided on the top of the sprue sleeve body, a guide tube is connected to the bottom end of the arc-shaped groove, positioning holes are provided on both sides of the sprue sleeve body, and the switch rod is plugged into the positioning hole.

[0010] Furthermore, a cavity is provided on the upper mold, a sealing gasket is connected to the top of the cavity, and the gate sleeve body slides on the cavity.

[0011] Furthermore, the sealing gasket is made of high temperature resistant rubber material.

[0012] Furthermore, the cavity is conical and gradually becomes larger vertically downward.

[0013] The beneficial effects of the utility model are:

[0014] The utility model discloses a quick-release mechanism for a gate sleeve of an injection mold. The limit plate is rotated to make the limit plate consistent with the direction of the strip groove, and the gate sleeve body is sleeved in the cavity. During the installation process, the gate sleeve body will push the switch rod to shrink toward the inside of the switch compartment. When the gate sleeve body is put in place, the switch rod can be driven to be inserted into the positioning hole through the cooperation between the switch spring and the pull rod, and the gate sleeve body is limited and fixed. At the same time, the limit plate is rotated to make the limit plate rotate on the limit groove, and the direction of the strip groove is vertical, so that the gate sleeve body is limited and fixed for a second time, so as to prevent excessive pressure during injection molding, which may easily cause the gate sleeve body to fall off. At the same time, no bolts are required for fixing, and the installation and disassembly are convenient, thereby improving the injection molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of a quick-release mechanism of a sprue sleeve of an injection mold of the utility model;

[0016] Figure 2 It is a top view of a sprue sleeve body of a quick-release mechanism of a sprue sleeve of an injection mold of the utility model;

[0017] Figure 3 The utility model is a quick-release mechanism for a sprue sleeve of an injection mold Figure 1 Enlarged view of point A in the middle.

[0018] Reference table of reference numerals:

[0019] 1. Upper mold; 101. Cavity; 102. Sealing gasket; 2. Gate sleeve body; 201. Guide tube; 202. Arc groove; 203. Positioning hole; 3. Switch mechanism; 301. Switch compartment; 302. Switch rod; 303. Pull rod; 304. Switch spring; 305. Slide rail; 4. Protection mechanism; 401. Support rod; 402. Limit plate; 403. Strip groove; 404. Limit groove; 5. Handle. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0021] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] like Figures 1 to 3 As shown, a quick-release mechanism of a sprue sleeve of an injection mold comprises an upper mold 1, a sprue sleeve body 2 is connected to the interior of the upper mold 1, a switch mechanism 3 is connected to the upper surface of the upper mold 1, protective mechanisms 4 are connected to both ends of the sprue sleeve body 2, and a handle 5 is connected to the upper surface of the sprue sleeve body 2;

[0024] The protection mechanism 4 includes a support rod 401 installed on the upper surface of the upper mold 1, the top of the support rod 401 is rotatably connected to a limit plate 402, strip grooves 403 at both ends of the gate sleeve body 2, the limit plate 402 slides on the strip groove 403, and a limit groove 404 is provided at the top of the strip groove 403.

[0025] Specifically, rotate the limit plate 402 so that the limit plate 402 is in the same direction as the strip groove 403, and set the gate sleeve body 2 in the cavity 101. After the installation is completed, rotate the limit plate 402 so that the limit plate 402 rotates on the limit groove 404, and the direction of the strip groove 403 is vertical, and the gate sleeve body 2 is limited and fixed for the second time.

[0026] The switch mechanism 3 includes a switch compartment 301 installed inside the upper mold 1, a switch rod 302 is provided on the switch compartment 301, a pull rod 303 is connected to one end of the switch rod 302, a switch spring 304 is connected between the pull rod 303 and the switch compartment 301, and a slide rail 305 is provided on the upper surface of the upper mold 1, and the pull rod 303 slides on the slide rail 305.

[0027] An arc groove 202 is provided on the top of the sprue sleeve body 2, and a guide tube 201 is connected to the bottom of the arc groove 202. Positioning holes 203 are provided on both sides of the sprue sleeve body 2, and the switch rod 302 is plugged into the positioning holes 203.

[0028] Specifically, the gate sleeve body 2 is sleeved in the cavity 101. During the installation process, the gate sleeve body 2 will push the switch rod 302 to retract into the switch chamber 301. When the gate sleeve body 2 is placed in place, the switch rod 302 can be inserted into the positioning hole 203 through the cooperation between the switch spring 304 and the pull rod 303, so as to limit and fix the gate sleeve body 2.

[0029] The upper mold 1 is provided with a cavity 101 , the top of the cavity 101 is connected with a sealing gasket 102 , and the sprue bushing body 2 slides on the cavity 101 .

[0030] The sealing gasket 102 is made of high temperature resistant rubber material.

[0031] The cavity 101 is tapered and gradually becomes larger vertically downward.

[0032] The working principle of the utility model is that in actual use, the limit plate 402 is rotated to make the limit plate 402 and the strip groove 403 in the same direction, and the gate sleeve body 2 is set in the cavity 101. During the installation process, the gate sleeve body 2 will push the switch rod 302 to shrink into the switch compartment 301. When the gate sleeve body 2 is placed in place, the switch rod 302 can be driven to insert into the positioning hole 203 through the cooperation between the switch spring 304 and the pull rod 303, and the gate sleeve body 2 is limited and fixed. At the same time, the limit plate 402 is rotated to make the limit plate 402 rotate on the limit groove 404, and the direction of the strip groove 403 is vertical, and the gate sleeve body 2 is limited and fixed for a secondary time to prevent excessive pressure during injection molding, which may easily cause the gate sleeve body 2 to fall off. At the same time, no bolts are required for fixing, and installation and disassembly are convenient, thereby improving injection molding efficiency.

[0033] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the protection scope of the present utility model patent.

Claims

1. A quick-release mechanism for a sprue bushing of an injection mold, characterized in that: The invention comprises an upper mold (1), wherein the interior of the upper mold (1) is connected to a sprue sleeve body (2), the upper surface of the upper mold (1) is connected to a switch mechanism (3), both ends of the sprue sleeve body (2) are connected to a protection mechanism (4), and the upper surface of the sprue sleeve body (2) is connected to a handle (5); The protection mechanism (4) comprises a support rod (401) mounted on the upper surface of the upper mold (1); the top end of the support rod (401) is rotatably connected to a limit plate (402), and strip grooves (403) at both ends of the gate sleeve body (2); the limit plate (402) slides on the strip grooves (403); and a limit groove (404) is provided at the top end of the strip groove (403).

2. The quick-release mechanism for a sprue bushing of an injection mold according to claim 1, characterized in that: The switch mechanism (3) comprises a switch compartment (301) installed inside the upper mold (1), a switch rod (302) is provided on the switch compartment (301), one end of the switch rod (302) is connected to a pull rod (303), a switch spring (304) is connected between the pull rod (303) and the switch compartment (301), and a slide rail (305) is provided on the upper surface of the upper mold (1), and the pull rod (303) slides on the slide rail (305).

3. The quick-release mechanism of the injection mold sprue bushing according to claim 2, characterized in that: The top of the sprue sleeve body (2) is provided with an arc-shaped groove (202), the bottom end of the arc-shaped groove (202) is connected to a guide tube (201), and positioning holes (203) are provided on both sides of the sprue sleeve body (2), and the switch rod (302) is plugged into the positioning hole (203).

4. The quick-release mechanism for a sprue bushing of an injection mold according to claim 1, characterized in that: The upper mold (1) is provided with a cavity (101), the top of the cavity (101) is connected with a sealing gasket (102), and the sprue sleeve body (2) slides on the cavity (101).

5. The quick-release mechanism for a sprue bushing of an injection mold according to claim 4, characterized in that: The sealing pad (102) is made of high temperature resistant rubber material.

6. The quick-release mechanism of the injection mold sprue bushing according to claim 4, characterized in that: The cavity (101) is conical and gradually becomes larger vertically downward.

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