Injection mold for automobile plastic part

Abstract

The utility model discloses an injection mold for an automobile plastic part, which comprises a movable injection mold and a fixed injection female mold matched with the movable injection mold, a box-shaped mold seat with an opening at the bottom is fixedly sleeved at the bottom of the outer side of the fixed injection female mold, and a U-shaped support is fixedly connected to the top of the box-shaped mold seat. An electric telescopic rod is fixedly embedded in the inner wall of the top of the U-shaped support. By arranging a series of structures, mold closing and opening work can be automatically carried out, injection molding work of automobile plastic parts is carried out through injection molding of the injection molding holes after mold closing, demolding work can be conveniently carried out on the movable injection molding mold and the fixed injection molding female mold at the same time during mold opening, workers do not need to independently carry out stripping operation, the use convenience is improved, and the production efficiency is improved. And by means of the up-down synchronous demolding mode, the influence of the factor that the injection molding product is attached to which mold cannot be determined is avoided, stable demolding work can be guaranteed, and the phenomenon that the injection molding product is attached to another mold and cannot be automatically demolded is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile plastic parts, in particular to an injection mold for automobile plastic parts. Background Art

[0002] Automotive plastic parts can be roughly divided into two types according to their main uses: functional parts and structural parts. Functional parts are independent parts that work by utilizing certain special physical and chemical properties of the material, such as plastic oil-containing bearings. Structural parts are covers, mounting parts, housings, beams, engine parts, water tank parts, air conditioning parts and instrument panel parts that work by applying the mechanical properties of the material. Currently, during the production and processing of automotive plastic parts, injection molds are required to be used for their injection molding. However, after the injection molding of current automotive plastic parts is completed, they are prone to adhesion and adsorption on the surface of the injection mold, making it difficult to quickly cut the automotive plastic parts, thereby reducing the production efficiency of the injection mold for automotive plastic parts.

[0003] In this regard, according to the search report of the novelty search agency, announcement number CN221456668U discloses an injection mold for automobile plastic parts, including a fixed injection mold, a movable injection mold is provided on the right side of the fixed injection mold, the right side of the movable injection mold is fixedly connected to a support cover, the right side of the support cover is fixedly connected to a support plate, the right side of the support plate is provided with a through hole, two cylinders are provided inside the through hole, the telescopic ends of the two cylinders are fixedly connected to a connecting plate, the left side of the connecting plate is fixedly connected to a connecting column, a slide groove is provided on the right side of the movable injection mold, a blanking hole is provided on the inner wall of the slide groove, a push rod is slidably connected to the inner wall of the blanking hole, and the right end of the push rod is fixedly connected to the left side of the connecting column; the injection mold for automobile plastic parts can quickly blank automobile plastic parts, avoid the problem of adhesion and adsorption of automobile plastic parts and inconvenience in blanking, and improve the production efficiency of the injection mold for automobile plastic parts.

[0004] The above technology discloses an injection mold for automobile plastic parts. Through the provided cylinder, ejector and other structures, the ejector can be driven to extrude and eject the injection molded product adhered to one of the molds after injection molding. However, there are still the following deficiencies in use: 1. The method of separately providing a cylinder and other structures to eject the injection molded product requires personnel to perform the demolding operation separately, and the demolding operation cannot be performed automatically when the mold is opened after injection molding, and the convenience of use is not ideal; 2. Since the injection mold consists of a movable mold and a fixed mold, the method of performing demolding on a single mold makes it difficult to ensure which mold the injection molded product will adhere to, thereby making the demolding stability unsatisfactory, and there is a phenomenon that the injection molded product sticks to another mold and cannot be automatically demolded; improvement is needed. In view of this, the present application proposes an injection mold for automobile plastic parts to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide an injection mold for automobile plastic parts to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: an injection mold for automobile plastic parts, comprising a movable injection mold and a fixed injection mold matched therewith, wherein the outer bottom of the fixed injection mold is fixedly sleeved with a box-shaped mold base with an opening at the bottom, the top of the box-shaped mold base is fixedly connected to a U-shaped support, an electric telescopic rod is embedded and fixed on the top inner wall of the U-shaped support, the extended end of the electric telescopic rod is fixedly connected to a lifting seat slidably sleeved on the outer side of the U-shaped support, and the movable injection mold is fixedly mounted on the bottom of the lifting seat; the provided electric telescopic rod is used to drive the lifting seat to move up and down, and the movable injection mold is used to respectively perform mold closing and mold opening operations with the fixed injection mold when the lifting seat moves up and down;

[0007] Two first grooves are formed on the bottom inner wall of the fixed injection mold, and two T-shaped ejector rods are respectively adapted to the corresponding first grooves in the fixed injection mold. The bottom ends of the two T-shaped ejector rods extend into the box-shaped mold base and are fixedly connected to the same self-compression energy storage spring lifting assembly. The self-compression energy storage spring lifting assembly is slidably sleeved on the U-shaped support and movably contacted with the bottom of the lifting seat. The self-compression energy storage spring lifting assembly is used to drive the T-shaped ejector rods to move downward and perform elastic compression energy storage when the lifting seat moves downward, and is used to use elastic force to drive the T-shaped ejector rods to automatically eject the injection molded product upward when the lifting seat moves upward;

[0008] A second groove is provided at the bottom of the movable injection mold, and a movable sleeve is provided in the second groove with a lifting, extruding and self-resetting stripping component. The lifting seat sleeve is provided on the lifting, extruding and self-resetting stripping component. The lifting, extruding and self-resetting stripping component is used to automatically elastically tighten and store energy when the lifting seat is raised, and to push down the injection molded product attached to the bottom of the movable injection mold, and automatically perform elastic reset when the lifting seat moves down again.

[0009] Preferably, the self-compression energy storage spring lifting assembly includes a U-shaped rod fixedly connected to the bottom ends of two T-shaped ejecting rods, both ends of the top of the U-shaped rod extend to the top of the box-shaped mold base and are fixedly connected with a sliding sleeve, the box-shaped mold base is slidingly sleeved on the U-shaped rod, the sliding sleeve is slidingly sleeved on the U-shaped support and is in movably contact with the bottom of the lifting seat, a first spring is fixedly connected between the bottom of the sliding sleeve and the top of the box-shaped mold base, and the first spring is movably sleeved on the U-shaped rod.

[0010] Preferably, the lifting, extruding and self-resetting stripping assembly includes a pressure block movably mounted in the second groove, the top of the pressure block is fixedly connected to an L-shaped guide rod, the lifting seat and the movable injection mold are both slidably mounted on the L-shaped guide rod, and a second spring is fixedly connected between the top inner wall of the L-shaped guide rod and the top of the lifting seat.

[0011] Preferably, the distance between the top of the T-shaped ejector pin and the inner wall of the bottom of the fixed injection mold is the same as the distance between the top of the fixed injection mold and the bottom of the movable injection mold.

[0012] Preferably, a vertical guide hole is provided on the inner wall of the bottom of the first groove, which is slidably fitted onto the outer side of the corresponding T-shaped ejecting rod.

[0013] Preferably, two rectangular guide holes are provided on the top inner wall of the box-shaped mold base, both of which are slidably fitted with the outer sides of the U-shaped rods.

[0014] Preferably, injection holes are provided on the top of the movable injection mold and the top of the lifting seat, and the two injection holes are connected. An avoidance hole located above the injection hole is provided on the top inner wall of the U-shaped support. The provided injection holes are used for personnel to use external injection molding equipment to perform injection molding of automobile plastic parts into the fixed injection mold after the mold is closed.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The electric telescopic rod, U-shaped support, box-shaped mold base, lifting seat, movable injection mold, fixed injection mold and injection hole are coordinated to automatically close and open the mold, and then the automobile plastic parts are injected through the injection hole after the mold is closed;

[0017] 2. Through the cooperation of the lifting seat, fixed injection mold, self-compression energy storage spring lifting assembly and T-shaped ejector rod, the injection molded product can be automatically removed from the bottom when the mold is opened, eliminating the need for personnel to perform the removal operation at the bottom separately, thereby improving ease of use;

[0018] 3. By cooperating with the lifting seat, the movable injection mold and the lifting and extruding self-resetting stripping assembly, the injection molded product adhered to the bottom of the movable injection mold can be automatically stripped when the mold is opened. Combined with the automatic ejection and demoulding work of the bottom, the movable injection mold and the fixed injection mold can be demoulded at the same time when the mold is opened. By using the upper and lower synchronous demoulding method, it is not affected by the factor that the injection molded product cannot be determined to which mold it adheres, and thus can ensure stable demoulding work, avoiding the phenomenon that the injection molded product sticks to another mold and cannot be automatically demoulded.

[0019] The utility model is provided with a series of structures, which can automatically perform mold closing and mold opening operations, and perform automobile plastic parts injection molding through the injection hole after the mold is closed, so that the movable injection mold and the fixed injection mold can be demoulded at the same time when the mold is opened, without the need for personnel to perform the demoulding operation separately, thereby improving the convenience of use. In addition, the utility model utilizes the upper and lower synchronous demoulding method, which is not affected by the factor that it is uncertain to which mold the injection molded product is attached, thereby ensuring stable demoulding operation, and avoiding the phenomenon that the injection molded product is attached to another mold and cannot be automatically demoulded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of an injection mold for automobile plastic parts proposed in the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of an injection mold for automotive plastic parts proposed in the present invention;

[0022] Figure 3 The utility model provides a schematic cross-sectional structural diagram of an injection mold for automobile plastic parts in a mold-closing state.

[0023] In the figure: 1. movable injection mold; 2. fixed injection die; 3. injection hole; 4. box-shaped mold base; 5. U-shaped support; 6. electric telescopic rod; 7. lifting seat; 8. second groove; 9. L-shaped guide rod; 10. pressure block; 11. second spring; 12. first groove; 13. T-shaped ejector rod; 14. U-shaped rod; 15. sliding sleeve; 16. first spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 3As shown, the present embodiment proposes an injection mold for automobile plastic parts, comprising a movable injection mold 1 and a fixed injection mold 2 matched therewith, wherein the outer bottom of the fixed injection mold 2 is fixedly sleeved with a box-shaped mold base 4 with an opening at the bottom, wherein the top of the box-shaped mold base 4 is provided with a sleeve hole fixedly connected to the outer side of the fixed injection mold 2, and the top of the box-shaped mold base 4 is fixedly connected to a U-shaped support 5, and an electric telescopic rod 6 is embedded and fixed on the top inner wall of the U-shaped support 5, and the protruding end of the electric telescopic rod 6 is fixedly connected to a lifting seat 7 that is slidably sleeved on the outer side of the U-shaped support 5, wherein the top of the lifting seat 7 is provided with two sliding contacts that are both in contact with the outer side of the U-shaped support 5 The rectangular sliding hole plays the effect of guiding the vertical sliding of the lifting seat 7. The movable injection mold 1 is fixedly mounted on the bottom of the lifting seat 7. The top of the movable injection mold 1 and the top of the lifting seat 7 are both provided with injection holes 3. The two injection holes 3 are connected. The top inner wall of the U-shaped support 5 is provided with an avoidance hole located above the injection hole 3; the electric telescopic rod 6 is provided for driving the lifting seat 7 to move up and down. The movable injection mold 1 is used to close and open the mold with the fixed injection mold 2 when the lifting seat 7 moves up and down. The injection hole 3 is provided for personnel to use external injection molding equipment to perform automobile plastic parts injection into the fixed injection mold 2 after closing the mold;

[0026] Two first grooves 12 are provided on the bottom inner wall of the fixed injection mold 2. Two T-shaped ejector rods 13 are respectively adapted to the corresponding first grooves 12. The bottom ends of the two T-shaped ejector rods 13 extend into the box-shaped mold base 4 and are fixedly connected to the same self-compression energy storage elastic lifting assembly. A vertical guide hole is provided on the bottom inner wall of the first groove 12, which is slidably fitted with the outer side of the corresponding T-shaped ejector rod 13, so as to allow the T-shaped ejector rod 13 to pass through and guide its vertical sliding. The self-compression energy storage spring lifting assembly is slidably sleeved on the U-shaped support 5 and is in active contact with the bottom of the lifting seat 7. The distance between the top of the T-shaped ejector rod 13 and the inner wall of the bottom of the fixed injection mold 2 is the same as the distance between the top of the fixed injection mold 2 and the bottom of the movable injection mold 1. The self-compression energy storage spring lifting assembly is used to drive the T-shaped ejector rod 13 downward and perform elastic compression energy storage when the lifting seat 7 moves downward, and is used to use elastic force to drive the T-shaped ejector rod 13 upward to automatically eject the injection molded product when the lifting seat 7 moves upward;

[0027] A second groove 8 is provided at the bottom of the movable injection mold 1, and a lifting, extruding and self-resetting stripping component is movably sleeved in the second groove 8. The lifting seat 7 is sleeved on the lifting, extruding and self-resetting stripping component. The lifting, extruding and self-resetting stripping component is used to automatically elastically tighten and store energy when the lifting seat 7 is raised, and to push down the injection molded product attached to the bottom of the movable injection mold 1, and to automatically perform elastic reset when the lifting seat 7 moves down again.

[0028] Specifically, the self-compression energy storage elastic lifting assembly includes a U-shaped rod 14 fixedly connected to the bottom ends of two T-shaped ejecting rods 13, both ends of the top of the U-shaped rod 14 extend to the top of the box-shaped mold base 4 and are fixedly connected with a sliding sleeve 15, the box-shaped mold base 4 is slidingly sleeved on the U-shaped rod 14, and two rectangular guide holes are provided on the top inner wall of the box-shaped mold base 4, which are both slidably sleeved with the outer sides of the U-shaped rod 14, so as to allow the U-shaped rod 14 to pass through and guide its vertical sliding. The sliding sleeve 15 is slidingly sleeved on the U-shaped support 5 and is in movably contact with the bottom of the lifting seat 7. A first spring 16 is fixedly connected between the bottom of the sliding sleeve 15 and the top of the box-shaped mold base 4, and the first spring 16 is movably sleeved on the U-shaped rod 14; the U The U-shaped rod 14, the sliding sleeve 15 and the first spring 16 cooperate to squeeze and drive the two sliding sleeves 15 to move downward when the lifting seat 7 moves downward, and compress the first spring 16 to store energy. The two sliding sleeves 15 drive the U-shaped rod 14 to move downward, and the U-shaped rod 14 drives the upper parts of the two T-shaped ejector rods 13 to retract downward into the corresponding first grooves 12, thereby removing the obstruction to the interior of the fixed injection mold 2. When the lifting seat 7 moves upward, the first spring 16 in a compressed state drives the corresponding sliding sleeve 15 to move back upward, and the sliding sleeve 15 drives the U-shaped rod 14 to move upward, and the U-shaped rod 14 drives the two T-shaped ejector rods 13 to lift and eject the product injected in the fixed injection mold 2, thereby achieving the effect of automatically removing the injection molded product from the bottom when the mold is opened.

[0029] Furthermore, the lifting and extruding self-resetting stripping component includes a pressing block 10 movably sleeved in the second groove 8, and the top of the pressing block 10 is fixedly connected to an L-shaped guide rod 9, and the lifting seat 7 and the movable injection mold 1 are both slidably sleeved on the L-shaped guide rod 9, wherein the tops of the lifting seat 7 and the movable injection mold 1 are both provided with rectangular through-holes that slide with the outer side of the L-shaped guide rod 9, which serve to allow the L-shaped guide rod 9 to pass through and guide its vertical sliding, and a second spring 11 is fixedly connected between the top inner wall of the L-shaped guide rod 9 and the top of the lifting seat 7; the set pressing block 10, L-shaped guide rod 9 and second spring 11 cooperate, and after injection molding, when the injection molded product is bonded to the bottom of the movable injection mold 1, When the electric telescopic rod 6 is used to drive the lifting seat 7 to rise, when the lifting seat 7 drives the L-shaped guide rod 9 to move up and contact the top inner wall of the U-shaped support 5 through the second spring 11, the L-shaped guide rod 9 is blocked and restricted from moving up, and the lifting seat 7 and the movable injection mold 1 that continue to move upward slide upward on the L-shaped guide rod 9 and compress the second spring 11. At this time, the pressing block 10 moves out of the second groove 8 and squeezes the bonded injection molded product downward to fall off. When the lifting seat 7 is subsequently driven to move downward, the second spring 11 in a compressed state drives the pressing block 10 to move into the second groove 8 through the L-shaped guide rod 9, thereby achieving the effect of automatically removing the injection molded product bonded to the bottom of the movable injection mold 1 when the mold is opened.

[0030] The method of using this embodiment is as follows: when in use, the electric telescopic rod 6 is used to drive the lifting seat 7 to slide downward on the U-shaped support 5, and the lifting seat 7 drives the movable injection mold 1 downward to close the mold with the fixed injection mold 2. After the mold is closed, the personnel use the external injection molding equipment to inject the automobile plastic parts into the fixed injection mold 2 through the injection hole 3;

[0031] When the lifting seat 7 moves down, the lifting seat 7 squeezes and drives the two sliding sleeves 15 to move down, and compresses the first spring 16 to store energy, and the two sliding sleeves 15 drive the U-shaped rod 14 to move down, and the U-shaped rod 14 drives the upper parts of the two T-shaped ejector rods 13 to retract downward into the corresponding first grooves 12, thereby releasing the obstruction to the interior of the fixed injection mold 2 and avoiding affecting the injection molding work; when the mold is opened after injection and molding, the electric telescopic rod 6 is started in the reverse direction to drive the lifting seat 7 to rise upward, releasing the squeezing force on the sliding sleeve 15, at this time, the first spring 16 in the compressed state drives the corresponding sliding sleeve 15 to move back upward, and the sliding sleeve 15 drives the U-shaped rod 14 to move up, and the U-shaped rod 14 drives the two T-shaped ejector rods 13 to lift and eject the product injected in the fixed injection mold 2 upward, so as to achieve the effect of automatically removing the injection molded product from the bottom when the mold is opened, and there is no need for personnel to perform the lower stripping operation separately, thereby improving the convenience of use;

[0032] When the lifting seat 7 is raised, the lifting seat 7 drives the L-shaped guide rod 9 to move upward through the second spring 11. When the L-shaped guide rod 9 moves up to contact the top inner wall of the U-shaped support 5, the L-shaped guide rod 9 is blocked and restricted from moving up. At this time, the lifting seat 7 and the movable injection mold 1 that continue to move upward slide upward on the L-shaped guide rod 9 and compress the second spring 11. At this time, the pressing block 10 moves out of the second groove 8 and squeezes the bonded injection molded product downward to fall off. When the lifting seat 7 is subsequently driven to move downward, the second spring 11 in the compressed state is released through the L-shaped guide rod 9. The guide rod 9 drives the pressure block 10 to move into the second groove 8, so as to realize the effect of automatically demoulding the injection molded product adhered to the bottom of the movable injection mold 1 when the mold is opened. Combined with the automatic ejection and demoulding work of the bottom, the movable injection mold 1 and the fixed injection mold 2 can be demoulded at the same time when the mold is opened. By using the upper and lower synchronous demoulding method, it is not affected by the factor that it is not certain which mold the injection molded product is attached to, and thus can ensure stable demoulding work, and avoid the phenomenon that the injection molded product is attached to another mold and cannot be automatically demoulded.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An injection mold for automobile plastic parts, comprising a movable injection mold (1) and a fixed injection mold (2) matched therewith, characterized in that: The outer bottom of the fixed injection mold (2) is fixedly sleeved with a box-shaped mold base (4) with an opening at the bottom, the top of the box-shaped mold base (4) is fixedly connected to a U-shaped support (5), an electric telescopic rod (6) is embedded and fixed on the top inner wall of the U-shaped support (5), the extended end of the electric telescopic rod (6) is fixedly connected to a lifting seat (7) slidably sleeved on the outer side of the U-shaped support (5), and the movable injection mold (1) is fixedly mounted on the bottom of the lifting seat (7); Two first grooves (12) are provided on the inner wall of the bottom of the fixed injection mold (2), and two T-shaped ejector rods (13) are provided in the fixed injection mold (2) and are respectively adapted to the corresponding first grooves (12). The bottom ends of the two T-shaped ejector rods (13) extend into the box-shaped mold base (4) and are fixedly connected to the same self-compressed energy storage spring lifting assembly. The self-compressed energy storage spring lifting assembly is slidably sleeved on the U-shaped support (5) and is in active contact with the bottom of the lifting seat (7); A second groove (8) is provided at the bottom of the movable injection mold (1), a lifting, extruding, self-resetting stripping assembly is movably sleeved in the second groove (8), and a lifting seat (7) is sleeved on the lifting, extruding, self-resetting stripping assembly.

2. The injection mold for automobile plastic parts according to claim 1, characterized in that: The self-compression energy storage spring lifting assembly includes a U-shaped rod (14) fixedly connected to the bottom ends of two T-shaped ejector rods (13), both ends of the top of the U-shaped rod (14) extend to the top of the box-shaped mold base (4) and are fixedly connected to a sliding sleeve (15), the box-shaped mold base (4) is slidingly sleeved on the U-shaped rod (14), the sliding sleeve (15) is slidingly sleeved on the U-shaped support (5) and is in movably contact with the bottom of the lifting seat (7), a first spring (16) is fixedly connected between the bottom of the sliding sleeve (15) and the top of the box-shaped mold base (4), and the first spring (16) is movably sleeved on the U-shaped rod (14).

3. The injection mold for automobile plastic parts according to claim 1, characterized in that: The lifting, extruding and self-resetting stripping assembly comprises a pressing block (10) movably sleeved in a second groove (8); the top of the pressing block (10) is fixedly connected to an L-shaped guide rod (9); the lifting seat (7) and the movable injection mold (1) are both slidably sleeved on the L-shaped guide rod (9); and a second spring (11) is fixedly connected between the top inner wall of the L-shaped guide rod (9) and the top of the lifting seat (7).

4. The injection mold for automobile plastic parts according to claim 1, characterized in that: The distance between the top of the T-shaped ejector rod (13) and the inner wall of the bottom of the fixed injection mold (2) is the same as the distance between the top of the fixed injection mold (2) and the bottom of the movable injection mold (1).

5. The injection mold for automobile plastic parts according to claim 1, characterized in that: A vertical guide hole is provided on the inner wall of the bottom of the first groove (12) and is slidably fitted onto the outer side of the corresponding T-shaped ejector rod (13).

6. The injection mold for automobile plastic parts according to claim 2, characterized in that: Two rectangular guide holes are provided on the top inner wall of the box-shaped mold base (4) and are slidably fitted on the outer sides of the U-shaped rod (14).

7. The injection mold for automobile plastic parts according to claim 1, characterized in that: The top of the movable injection mold (1) and the top of the lifting seat (7) are both provided with injection holes (3), the two injection holes (3) are connected, and the top inner wall of the U-shaped support (5) is provided with an avoidance hole located above the injection holes (3).

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