A high-precision positioning fixture for injection molds of automotive plastic parts

Abstract

The utility model relates to the technical field of positioning jigs, and discloses a high-precision positioning jig for an injection mold of an automobile plastic part, comprising a clamping assembly, wherein the clamping assembly comprises a placement plate, two groups of positioning assemblies are arranged opposite to each other on both sides of the placement plate, the positioning assembly comprises a positioning base, an annular slide groove is provided on the inner wall of the positioning base, a large-angle slide plate is movably installed inside the slide groove of the positioning base, and the positioning assembly is composed of a positioning base, a large-angle slide plate, a small-angle slide plate, a micro-angle slide plate, and a positioning head in sequence. By setting the positioning assembly, this multi-level and multi-angle slide plate and positioning head combination design is achieved, so that the jig can adapt to injection molds of various shapes and sizes, has high positioning accuracy, flexible operation, and convenient adjustment. At the same time, the raised design of the positioning head also increases the stability of the clamping, ensuring the stability of the injection molding process and the product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning jigs, in particular to a high-precision positioning jig for an injection mold of an automobile plastic part. Background Art

[0002] A fixture is a large category of tools for carpentry, ironwork, fitter, machinery, electronic control and some other handicrafts. It is mainly used as a tool to assist in controlling position or movement. Fixtures can be divided into three categories: process assembly fixtures, project test fixtures and circuit board test fixtures. A high-precision automotive plastic injection mold positioning fixture is a tool used to ensure the precise positioning of automotive plastic parts during the injection molding process. The design and use of this fixture is crucial to ensuring the quality and precision of automotive plastic parts.

[0003] For example, the Chinese patent "CN213107867U" discloses a positioning device for automobile injection molding molds, which proposes: a mold body is provided at the middle position of the front side of the base, a fixing plate is symmetrically fixedly provided on the front side of the base, a cylinder is symmetrically fixedly provided on the side of the fixing plate close to the mold body, the output ends of adjacent cylinders are fixedly connected with a shell, a sliding rod is symmetrically fixedly provided on the side of the shell close to the mold body, a clamp matching the mold body is slidably sleeved between adjacent sliding rods, a limit block is fixedly provided on the end of the sliding rod away from the shell, a positioning rod is symmetrically rotatably provided on the side of the shell close to the mold body, and a thread is provided on the end of the positioning rod close to the mold body. The structure is simple and easy to use, which can effectively improve the speed and stability of molding mold positioning, thereby effectively improving production efficiency.

[0004] It can be seen from the above-mentioned device that although a positioning device with a relatively simple structure is proposed above, the current technical solution still has the following shortcomings:

[0005] When the existing positioning fixture is used to position automobile injection molds, it is impossible to accurately position molds of all shapes due to the large variations in the shapes of injection molds. The positioning effect is not obvious when positioning special-shaped molds, resulting in unstable positioning during injection and demolding, causing low work efficiency. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides a high-precision positioning fixture for automobile plastic parts injection molds, which has the advantage of adjusting the angle of the injection mold through semicircular slides arranged from large to small, so that injection molds of various shapes can be positioned with high precision. This solves the problem that when the existing positioning fixture is used to position automobile injection molds, the shapes of injection molds vary greatly, and it is impossible to accurately position molds of all shapes. When positioning special-shaped molds, the positioning effect is not obvious, resulting in unstable positioning during injection molding and demoulding, causing low work efficiency.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision automobile plastic part injection mold positioning fixture, comprising a clamping assembly, the clamping assembly comprising a placement plate, and two sets of positioning assemblies are arranged opposite to each other on both sides of the placement plate;

[0010] The positioning assembly includes a positioning base, an annular slide groove is formed on the outer wall of the positioning base, a large-angle slide is movably installed inside the slide groove of the positioning base, the positioning assembly is composed of a positioning base, a large-angle slide, a small-angle slide, a micro-angle slide, and a positioning head in sequence, and the positioning base, the large-angle slide, the small-angle slide, and the micro-angle slide are all provided with annular slide grooves, and the large-angle slide, the small-angle slide, the micro-angle slide, and the outer walls of the positioning head are all provided with semicircular slides, and are all movably installed in the corresponding annular slide grooves through the semicircular slides.

[0011] Preferably, two annular sliding grooves are provided on both sides of the outer wall of the large-angle sliding plate, and small-angle sliding plates are movably installed inside the two annular sliding grooves provided on the outer wall of the large-angle sliding plate.

[0012] Preferably, the outer walls of the two small-angle slides are each provided with two annular slide grooves, and micro-angle slides are arranged inside the two annular slide grooves provided on the outer walls of the small-angle slides.

[0013] Preferably, the outer wall of the micro-angle skateboard is provided with two annular grooves, and two positioning heads are movably installed inside the two annular grooves provided on the outer wall of the micro-angle skateboard.

[0014] Preferably, the outer wall of the positioning head is provided with two protrusions to facilitate clamping of the injection mold.

[0015] Preferably, a screw groove is opened in the middle of the placement plate, and sliding grooves are opened on both sides of the placement plate. A screw is movably installed inside the screw groove of the placement plate, and a driving motor is fixedly connected to the outer wall of the screw. A slider is installed on the screw through surface thread engagement, and the slider is slidably installed in the sliding groove on both sides.

[0016] Preferably, a positioning base of the positioning assembly on one side is fixedly connected above the sliding block, and a positioning base of the positioning assembly on the other side is fixedly connected above one end of the placement plate.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a high-precision automobile plastic parts injection mold positioning fixture, which has the following beneficial effects:

[0019] 1. This high-precision automobile plastic injection mold positioning fixture achieves this multi-level, multi-angle slide and positioning head combination design by setting the positioning components, so that the fixture can adapt to injection molds of various shapes and sizes, with high positioning accuracy, flexible operation and convenient adjustment. At the same time, the raised design of the positioning head also increases the stability of the clamping, ensuring the stability of the injection molding process and product quality.

[0020] 2. The high-precision automobile plastic injection mold positioning fixture is provided with a clamping component, so that the lead screw is driven by a driving motor to move, and the positioning component above the slide plate is driven to move quickly, so as to adapt to injection molds of different sizes and quickly clamp and fix them, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the positioning component of the utility model;

[0024] Figure 4 This is a schematic diagram of the exploded structure of the positioning component of the utility model.

[0025] The numbers in the figure are:

[0026] 1. Clamping assembly; 11. Placement plate; 12. Screw rod; 13. Drive motor; 14. Slide groove; 15. Slider; 2. Positioning assembly; 21. Positioning base; 22. Large-angle slide plate; 23. Small-angle slide plate; 24. Micro-angle slide plate; 25. Positioning head. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-2 A high-precision automobile plastic injection mold positioning fixture includes a clamping component 1, the clamping component 1 includes a placement plate 11, two groups of positioning components 2 are arranged opposite to each other on both sides of the placement plate 11, a screw groove is opened in the middle of the placement plate 11, and slide grooves 14 are opened on both sides of the placement plate 11. A screw 12 is movably installed inside the screw groove of the placement plate 11, and a driving motor 13 is fixedly connected to the outer wall of the screw 12. A slider 15 is installed on the screw 12 through surface thread engagement. Both sides of the slider 15 are slidably installed in the slide groove 14. The slider 15 is more stable when moving and will not shake or deviate. A positioning base 21 of one side positioning component 2 is fixedly connected above the slider 15, so that the slider 15 can move along the axial direction of the screw 12 in the screw groove. This design can easily adjust the position of the slider 15 to adapt to injection molds of different sizes, and the positioning base 21 of the other side positioning component 2 is fixedly connected to the top of one end of the placement plate 11.

[0029] See also Figure 3-4 The positioning assembly 2 includes a positioning base 21, an annular slide groove is provided on the outer wall of the positioning base 21, a large-angle slide plate 22 is movably installed inside the slide groove of the positioning base 21, and the large-angle slide plate 22 can be adjusted at a large angle along the annular slide groove to adapt to injection molds with different inclination angles. The positioning assembly 2 is composed of a positioning base 21, a large-angle slide plate 22, a small-angle slide plate 23, a micro-angle slide plate 24, and a positioning head 25 in sequence, and the positioning base 21, the large-angle slide plate 22, the small-angle slide plate 23, and the micro-angle slide plate 24 are all provided with an annular slide groove, and the large-angle slide plate 22, the small-angle slide plate 23, the micro-angle slide plate 24, and the positioning head 25 The outer walls are all provided with semicircular sliders, and they are all through semicircular The slider is movably installed in the corresponding annular slide groove. Two annular slide grooves are provided on both sides of the outer wall of the large-angle slide plate 22. Small-angle slide plates 23 are movably installed in the two annular slide grooves provided on the outer wall of the large-angle slide plate 22. Two annular slide grooves are provided on the outer walls of the two small-angle slide plates 23. Micro-angle slide plates 24 are provided in the two annular slide grooves provided on the outer walls of the small-angle slide plates 23. Two annular slide grooves are provided on the outer walls of the micro-angle slide plates 24. Two positioning heads 25 are movably installed in the two annular slide grooves provided on the outer walls of the micro-angle slide plates 24. The outer wall of the positioning head 25 is provided with two protrusions to facilitate clamping of the injection mold, which can effectively increase the clamping force with the injection mold and ensure the stability of positioning.

[0030] Working principle: First, the operator places the injection mold of the automobile plastic part on the placement plate 11. The placement plate 11 provides a smooth and stable platform to ensure that the mold will not shake or deflect when placed. Then, the operator starts the drive motor 13. The drive motor 13 starts working and drives the screw rod 12 to rotate. The rotation of the screw rod 12 is the key to the precise adjustment of the entire fixture. When the screw rod 12 rotates, the slider 15 on its outer wall begins to move within the slide groove 14 on both sides. The movement of the slider 15 is smooth and precise, thanks to the threaded engagement design of the screw rod and the slider. The movement of the slider 15 drives the positioning assembly 2 installed above it to move toward the positioning assembly 2 on the other side until the positioning assemblies on both sides tightly clamp the injection mold.

[0031] Secondly, after the positioning components 2 on both sides preliminarily clamp the injection mold, the large-angle slide 22 begins to play a role. The large-angle slide 22 is adjusted at a large angle along the annular slide groove opened by the positioning base 21. This step is to adapt to injection molds with different inclination angles and ensure the fit between the fixture and the mold. After the large-angle adjustment, the small-angle slide 23 plays a further role. The small-angle slide 23 follows the shape of the outer wall of the injection mold to make small-angle fine adjustments. This step is to further adapt to the inclination angle of the mold and ensure that the fit between the fixture and the mold is closer. Finally, the micro-angle slide 24 makes more precise angle adjustments and adjusts the angle within a small range to further adapt the appearance shape of the injection mold. This step is to ensure that the fit between the fixture and the mold reaches the best state. After the adjustment of the above-mentioned multi-level slide, the positioning head 25 reaches the best position and angle. At this time, the positioning components 2 on both sides use the protrusions on the positioning head 25 to clamp the four corners of the injection mold. These protrusions increase the stability of the clamping, ensuring that the position of the injection mold in the fixture is accurate and stable, and ensuring that the injection mold will not shift or shake during the injection molding process. This helps to improve the quality and production efficiency of injection molded products.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the sentence "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision automobile plastic part injection mold positioning fixture, comprising a clamping assembly (1), characterized in that: The clamping assembly (1) comprises a placement plate (11), and two sets of positioning assemblies (2) are arranged opposite to each other on two sides of the placement plate (11); The positioning assembly (2) comprises a positioning base (21), an annular slide groove is formed on the outer wall of the positioning base (21), a large-angle slide plate (22) is movably installed inside the slide groove of the positioning base (21), the positioning assembly (2) is sequentially composed of a positioning base (21), a large-angle slide plate (22), a small-angle slide plate (23), a micro-angle slide plate (24), and a positioning head (25), and the positioning base (21), the large-angle slide plate (22), the small-angle slide plate (23), and the micro-angle slide plate (24) are all provided with an annular slide groove, and the large-angle slide plate (22), the small-angle slide plate (23), the micro-angle slide plate (24), and the positioning head (25) are all provided with semicircular slide plates on their outer walls, and are all movably installed inside the corresponding annular slide grooves through the semicircular slide plates.

2. A high-precision automobile plastic part injection mold positioning fixture according to claim 1, characterized in that: Two annular sliding grooves are provided on both sides of the outer wall of the large-angle sliding plate (22), and a small-angle sliding plate (23) is movably installed inside the two annular sliding grooves provided on the outer wall of the large-angle sliding plate (22).

3. A high-precision automobile plastic part injection mold positioning fixture according to claim 2, characterized in that: The outer walls of the two small-angle slides (23) are each provided with two annular sliding grooves, and micro-angle slides (24) are each arranged inside the two annular sliding grooves provided on the outer walls of the small-angle slides (23).

4. A high-precision automobile plastic part injection mold positioning fixture according to claim 3, characterized in that: The outer wall of the micro-angle slide plate (24) is provided with two annular slide grooves, and two positioning heads (25) are movably installed inside the two annular slide grooves provided on the outer wall of the micro-angle slide plate (24).

5. A high-precision automobile plastic part injection mold positioning fixture according to claim 4, characterized in that: The outer wall of the positioning head (25) is provided with two protrusions for facilitating the clamping of the injection mold.

6. A high-precision automobile plastic part injection mold positioning fixture according to claim 1, characterized in that: A screw rod groove is provided in the middle of the placement plate (11), and slide grooves (14) are provided on both sides of the placement plate (11). A screw rod (12) is movably installed inside the screw rod groove of the placement plate (11), and a driving motor (13) is fixedly connected to the outer wall of the screw rod (12). A slider (15) is installed on the screw rod (12) through surface thread engagement, and the slider (15) is slidably installed in the slide grooves (14) on both sides.

7. A high-precision automobile plastic part injection mold positioning fixture according to claim 6, characterized in that: A positioning base (21) of the positioning assembly (2) on one side is fixedly connected above the sliding block (15), and a positioning base (21) of the positioning assembly (2) on the other side is fixedly connected above one end of the placement plate (11).

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