Anti-backflow efficient one-mold multi-cavity automobile interior trim part injection mold

Abstract

The utility model provides an anti-backflow efficient one-mold multi-cavity injection mold for automotive upholstery, which relates to the technical field of injection molds and comprises a movable mold, a fixed mold is arranged on the back of the movable mold, an injection port is formed in the front of the movable mold, and an injection channel is formed in the back of the injection port and penetrates through the back of the movable mold. A built-in groove is formed in the position, located on the right side of the material injection channel, in the movable mold, an insertion rod is slidably connected into the built-in groove, the periphery of the insertion rod is sleeved with a reset spring, the position, located on the periphery of the insertion rod, of the bottom of the reset spring is sleeved with a push piece, and threaded rods are rotationally connected to the positions, close to the front face and the back face, of the right side of the push piece; the spring set pushes the movable part to reset, the material injection channel is cut off, primary backflow prevention is completed, meanwhile, under the action of the reset spring, the insertion rod can be pushed to be inserted into the material injection channel, secondary backflow prevention is conducted, the production quality is greatly improved, and practicability is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field especially relates to a kind of anti-backflow high-efficiency one-mold multi-cavity automobile interior part injection mold. BACKGROUND

[0002] Injection mold is a tool for producing plastic products, and is also a tool for giving plastic products complete structure and accurate size. Injection molding is a processing method used in mass production of some complex-shaped parts. Specifically, hot molten plastic is injected into a mold cavity by an injection molding machine at high pressure. After cooling and solidification, the shaped product is obtained. A one-mold multi-cavity automobile interior part injection mold is a special injection mold for producing automobile interior parts. This mold usually has two forming grooves, and two automobile interior parts can be completed at the same time after one injection.

[0003] The structure of the common one-mold multi-cavity automobile interior part injection mold is relatively simple. When the injection head is withdrawn from the injection port after injection is completed, the high-pressure hot melt plastic inside the two forming grooves is prone to backflow, resulting in uneven distribution of hot melt plastic inside the forming grooves and quality problems of the automobile interior parts. Therefore, there is a need for an anti-backflow high-efficiency one-mold multi-cavity automobile interior part injection mold. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art. The common one-mold multi-cavity automobile interior part injection mold has a relatively simple structure. When the injection head is withdrawn from the injection port after injection is completed, the high-pressure hot melt plastic inside the two forming grooves is prone to backflow, resulting in uneven distribution of hot melt plastic inside the forming grooves and quality problems of the automobile interior parts. Therefore, there is a need for an anti-backflow high-efficiency one-mold multi-cavity automobile interior part injection mold.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] An anti-backflow high-efficiency one-mold multi-cavity automobile interior part injection mold includes a movable mold, and the back of the movable mold is provided with a fixed mold.

[0007] A material injection port is formed on the front surface of the movable mold. An injection channel is formed through the back of the movable mold. An internal recess is formed inside the movable mold and located to the right of the injection channel. A plug rod is slidably connected inside the internal recess. A return spring is provided around the plug rod. A push piece is provided at the bottom of the return spring and around the plug rod. A threaded rod is rotatably connected to the right side of the push piece near the front and back surfaces. A cutting assembly is installed inside the movable mold near the back surface.

[0008] As a preferred scheme of the utility model, an injection head is inserted into the material injection port. The injection head extends to the left and right sides of the end of the injection channel, and a circular hole is symmetrically formed on both sides.

[0009] The technical effect of the further scheme is that the injection head can push the inserting rod and the movable piece, and the hot melt plastic is injected into the two forming grooves through the round hole and the injection channel.

[0010] As the preferred scheme of the utility model, the front face of the fixed mold is symmetrically provided with forming grooves near the left and right sides, and the injection channel is Y-shaped, and the end away from the injection port extends to the inside of the forming groove.

[0011] The technical effect of the further scheme is that the use of the Y-shaped injection channel can make the injection head complete the injection work in the two forming grooves at the same time, improve the use convenience and production efficiency.

[0012] As the preferred scheme of the utility model, the back face of the movable mold is welded with a fixing rod near the four corners, the front face of the fixed mold is provided with a fixing groove corresponding to the fixing rod, and the fixing rod is matched with the fixing groove.

[0013] The technical effect of the further scheme is that the matching of the fixing rod and the fixing groove can limit the movable mold and the fixed mold when the mold is closed, prevent the two from deviating, and improve the use stability.

[0014] As the preferred scheme of the utility model, the cutting assembly comprises a movable piece, and the back face of the movable piece is fixedly installed with a spring group.

[0015] The technical effect of the further scheme is that after the injection work is completed, the spring group can continuously push the movable piece to the front face, cut off the injection channel, prevent the backflow phenomenon, and improve the use stability.

[0016] As the preferred scheme of the utility model, the movable piece is Y-shaped, and the middle part is slightly longer than the two sides.

[0017] The technical effect of the further scheme is that the use of the Y-shaped movable piece can make the injection head first contact the middle part of the movable piece during injection, and drive the movable piece to move to the back face, so that the two sides of the movable piece exit the injection channel, and the purpose of opening the injection channel is achieved.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] The utility model discloses, through the design to movable mould and fixed mould, when the injection head is extracted from the inside of injection channel after the injection is completed, the injection head and the movable piece are in contact, and spring group pushes movable piece reset, and the injection channel is cut off, and the preliminary backflow prevention is completed, and under the action of reset spring, the plug rod is pushed, and it is inserted into the inside of injection channel, and the secondary backflow prevention is carried out, thereby preventing the uneven distribution of hot melt plastic inside the forming groove caused by backflow, greatly improve the production quality, effectively improve practicality. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 The utility model provides a whole structure schematic diagram of one -off multiple -hole automobile interior part injection mould of backflow prevention high efficiency of the utility model,

[0021] Fig. 2 The utility model provides a whole top end structure anatomical drawing of one -off multiple -hole automobile interior part injection mould of backflow prevention high efficiency of the utility model,

[0022] Fig. 3 The utility model provides a structure amplification schematic diagram of A of one -off multiple -hole automobile interior part injection mould of backflow prevention high efficiency of the utility model.

[0023] Legend: 1, movable mould, 101, injection port, 1011, injection head, 102, injection channel, 103, built -in recess, 104, plug rod, 105, reset spring, 106, push piece, 107, threaded rod, 108, cut -off subassembly, 1081, movable piece, 1082, spring group, 109, fixed rod, 2, fixed mould, 201, forming groove, 202, fixed groove. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be apparently, apparently, only some embodiments of the utility model are described, and not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0025] In order to facilitate understanding the utility model, the utility model will be described more fully below in connection with relevant, given several embodiments of the utility model, but, the utility model can be realized in many different forms, and is not limited to the embodiments described in this paper, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Example 1

[0029] like Figs. 1-3 As shown, this utility model provides a technical solution: a high-efficiency multi-cavity injection mold for automotive interior parts with anti-backflow, including a moving mold 1, a fixed mold 2 on the back of the moving mold 1, an injection port 101 on the front of the moving mold 1, an injection channel 102 through the back of the injection port 101, an internal groove 103 inside the moving mold 1 and located on the right side of the injection channel 102, a rod 104 slidably connected inside the internal groove 103, a return spring 105 sleeved around the rod 104, a push plate 106 sleeved at the bottom of the return spring 105 and located around the rod 104, a threaded rod 107 rotatably connected to the right side of the push plate 106 near the front and back, the threaded rod 107 being threadedly connected to the moving mold 1, by rotating the threaded rod 107 can drive the push plate 106 to move to the left, thereby compressing the return spring 105, achieving the purpose of adjusting the thrust of the return spring 105, and a cut-off component 108 installed inside the moving mold 1 near the back.

[0030] Example 2

[0031] like Figs. 1-3As shown, the inside of the injection port 101 is inserted with an injection head 1011, the injection head 1011 extends to the left and right sides of the one end of the injection channel 102 and is symmetrically provided with a round hole, the injection head 1011 can push the plug rod 104 and the movable piece 1081, and the hot melt plastic is injected into the two forming grooves 201 through the round hole through the injection channel 102, the front of the fixed mold 2 is symmetrically provided with a forming groove 201 near the left and right sides, the injection channel 102 is Y-shaped, and the one end away from the injection port 101 extends into the forming groove 201, through the use of the Y-shaped injection channel 102, the injection head 1011 can complete the injection work in the two forming grooves 201 at the same time, improve the use convenience and production efficiency, the back of the movable mold 1 is welded with a fixed rod 109 near the four corners, and the front of the fixed mold 2 is provided with a fixed groove 202 corresponding to the fixed rod 109, the fixed rod 109 is matched with the fixed groove 202, through the matching of the fixed rod 109 and the fixed groove 202, the movable mold 1 and the fixed mold 2 can be limited when the mold is closed, so that the two do not deviate, and the use stability is improved, the cutting assembly 108 includes a movable piece 1081, and the back of the movable piece 1081 is fixedly installed with a spring set 1082, after the injection work is completed, the spring set 1082 can continuously push the movable piece 1081 to the front, so that the movable piece 1081 cuts off the injection channel 102, prevents backflow, and improves the use stability, the movable piece 1081 is Y-shaped, the middle part is slightly longer than the two sides, through the use of the Y-shaped movable piece 1081, the injection head 1011 can first contact the middle part of the movable piece 1081 during injection, and drive the movable piece 1081 to move to the back, so that the two sides of the movable piece 1081 exit the injection channel 102, and the purpose of opening the injection channel 102 is achieved.

[0032] The working process of the utility model: when the anti-backflow high-efficiency one-mold multi-cavity automobile interior part injection mold is used in the injection process, first, the external injection equipment pushes the injection head 1011 to insert into the inside of the injection channel 102 through the injection port 101, in the process, the injection head 1011 extrudes the plug rod 104 and the movable piece 1081, so that they exit the injection channel 102, then the injection of hot melt plastic can be started, after the injection work is completed, when the injection head 1011 is pulled out from the inside of the injection channel 102, the injection head 1011 is separated from the movable piece 1081, at the same time, the spring set 1082 pushes the movable piece 1081 to reset, so that it cuts off the injection channel 102, completes the preliminary anti-backflow, at the same time, under the action of the reset spring 105, the plug rod 104 is pushed to insert into the inside of the injection channel 102, and the secondary anti-backflow is carried out, so that the uneven distribution of hot melt plastic in the forming groove 201 caused by backflow is prevented, the production quality is greatly improved, and the practicality is effectively improved.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A backflow prevention high-efficiency one-mold multi-cavity automobile interior part injection mold comprising a movable mold (1), characterized in that: The back of the movable mold (1) is provided with a fixed mold (2); The front of the movable mold (1) is provided with an injection port (101), the back of the injection port (101) is provided with an injection channel (102) penetrating through the back of the movable mold (1), the inside of the movable mold (1) and the right side of the injection channel (102) are provided with an embedded groove (103), the embedded groove (103) is slidably connected with a plug rod (104), the plug rod (104) is provided with a reset spring (105) on the periphery, the bottom of the reset spring (105) and the periphery of the plug rod (104) are provided with a push piece (106), the right side of the push piece (106) is rotatably connected with a threaded rod (107) near the front and back, and the inside of the movable mold (1) is installed with a cutting assembly (108) near the back.

2. The backflow prevention high-efficiency one-mold multi-cavity injection mold for automobile interior parts of claim 1, wherein: The inside of the injection port (101) is inserted with an injection head (1011), and the left and right sides of the inside of the injection head (1011) extending to one end of the injection channel (102) are symmetrically provided with round holes.

3. The backflow prevention high-efficiency one-die multi-cavity automobile interior part injection mold of claim 1, wherein: The front of the fixed mold (2) is symmetrically provided with a forming groove (201) near the left and right sides, and the injection channel (102) is in Y shape, and the ends away from the injection port (101) extend into the forming groove (201) respectively.

4. The anti-backflow high-efficiency one-mold multi-cavity injection mold for automobile interior parts of claim 1, wherein: The back of the movable mold (1) is welded with a fixed rod (109) near the four corners, the front of the fixed mold (2) is provided with a fixed groove (202) corresponding to the fixed rod (109), and the fixed rod (109) is matched with the fixed groove (202).

5. The backflow prevention high-efficiency one-die multi-cavity automobile interior part injection mold of claim 1, wherein: The cutting assembly (108) comprises a movable piece (1081), and the back of the movable piece (1081) is fixedly installed with a spring set (1082).

6. The anti-backflow high-efficiency one-mold multi-cavity injection mold for automobile interior parts of claim 5, wherein: The movable piece (1081) is in the shape of a mountain, and the middle part is slightly longer than the two sides.

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