A quick prototyping fixture for automotive plastic parts

Abstract

This utility model discloses a quick-release milling fixture for automotive plastic prototypes, including a base with a plurality of mounting holes arranged in a matrix, an L-shaped positioning seat, and an L-shaped clamping bar that matches the L-shaped positioning seat. Both ends of the L-shaped clamping bar are connected to both ends of the L-shaped positioning seat via quick-release locking units. The inner corners of the L-shaped clamping bar and the L-shaped positioning seat are respectively attached to two opposite corners of the plastic part. The quick-release locking unit includes a slider slidably mounted on one end of the L-shaped positioning seat, a mounting seat detachably mounted on the L-shaped positioning seat, and a quick-release locking mechanism for pushing the slider closer to the mounting seat. Both ends of the L-shaped clamping bar slide horizontally through the corresponding sliders. When it is necessary to clamp the plastic part, the plastic part is directly placed between the L-shaped positioning seat and the L-shaped clamping bar, and then the quick-release locking mechanism is closed, so that the L-shaped positioning seat and the L-shaped clamping bar tightly clamp the two opposite corners of the plastic part, which can quickly clamp the plastic part.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive plastic interior processing, specifically to a quick-prototype milling fixture for automotive plastic parts. Background Technology

[0002] There are various processing methods for automotive plastic interior trim, each with its unique advantages and applicable scenarios. These mainly include injection molding, vacuum lamination, rotational molding, and milling. Injection molding involves injecting molten plastic into a mold and then cooling and solidifying it; it is highly efficient and suitable for mass production. Vacuum lamination involves adsorbing heated and softened surface material onto a textured mold under vacuum, combining it with a plastic skeleton. Rotational molding involves adding plastic powder into a mold, which rotates and heats simultaneously, causing the plastic to melt and adhere evenly to the mold cavity, forming a hollow product. Milling processes plastic blocks and is mainly used for prototyping and small-batch production; it offers advantages such as high precision, high flexibility, no need for molds, and suitability for complex geometries.

[0003] Chinese patent application CN202020576667.7, entitled "A CNC Milling Fixture for Automotive Plastic Samples," discloses a CNC milling fixture for automotive plastic samples. After positioning the plastic part using main and secondary positioning components, the part is fixed by a clamping assembly. The height needs to be adjusted with support blocks, and the nuts on the T-bolts are tightened to press the pressure plate onto the plastic part. However, this patent has the following shortcomings: not only is the clamping operation cumbersome and heavy, but the pressure plate pressing on the top of the plastic part also affects the processing. Since milling involves machining the top and side walls of the plastic part to create corresponding grooves or notches, the pressure plate hinders the milling process. Therefore, a faster milling fixture for automotive plastic samples is needed. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to overcome the cumbersome operation of existing clamping fixtures.

[0005] To achieve the above objectives, this utility model provides a quick-release milling fixture for automotive plastic prototypes, comprising: a base with a plurality of mounting holes arranged in a matrix, an L-shaped positioning seat fixedly mounted on the base, and an L-shaped clamping bar that matches the L-shaped positioning seat. Both ends of the L-shaped clamping bar are connected to both ends of the L-shaped positioning seat via quick-release locking units. The inner corners of the L-shaped clamping bar and the L-shaped positioning seat are respectively attached to two opposite corners of the plastic part. The quick-release locking unit includes a slider slidably mounted on one end of an L-shaped positioning seat, a mounting seat detachably mounted on the L-shaped positioning seat and located near the corner of the L-shaped positioning seat, and a quick-release locking mechanism for pushing the slider closer to the mounting seat. The two ends of the L-shaped clamping bar slide horizontally through the corresponding sliders.

[0006] Preferably, the quick-release locking mechanism includes a threaded rod that slides through the slider and the mounting seat, a nut threadedly sleeved at the end of the threaded rod near the corner of the L-shaped positioning seat, and a cam rod hinged to the end of the threaded rod away from the nut via a hinge shaft.

[0007] Preferably, the mounting base is slidably mounted on the end of the L-shaped positioning base, and the end of the L-shaped positioning base is provided with a plurality of mounting slots spaced apart along its length direction, and the mounting base is equipped with mounting bolts that pass through the corresponding mounting slots.

[0008] Preferably, the upper surface of the L-shaped positioning seat end and the side away from the plastic part are recessed with grooves of the same length direction, and the slider and the mounting seat are both provided with sliding parts that match the corresponding grooves.

[0009] Preferably, the quick-release locking mechanism further includes a washer sleeved on the threaded rod, the washer being located between the slider and the cam rod, and the contact surface between the washer and the cam rod being an arc-shaped wall.

[0010] Preferably, the mounting groove is a countersunk hole.

[0011] Preferably, the L-shaped clamping bar includes a corner portion that can contact the plastic part and a pair of connecting bars that are fixedly connected to the corner portion and spaced apart from the plastic part.

[0012] According to the above technical solution, the beneficial effects of the quick-drilling fixture for automotive plastic prototypes provided by this utility model are as follows: Firstly, when it is necessary to clamp the plastic part, after opening the quick-release locking mechanism, the plastic part can be placed directly between the L-shaped positioning seat and the L-shaped clamping bar, and then the quick-release locking mechanism can be closed. This allows the L-shaped positioning seat and the L-shaped clamping bar to tightly clamp the two opposite corners of the plastic part, which can quickly clamp the plastic part and facilitate small batch processing. In addition, the position of the L-shaped positioning seat and the L-shaped clamping bar makes it easy to process the top and side walls of the plastic part. Secondly, the position of the mounting base on the L-shaped positioning base can be adjusted, thereby adjusting the clamping range of the L-shaped positioning base and the L-shaped clamping bar, making it highly practical. Thirdly, the base is equipped with several mounting holes arranged in a matrix, which can be adjusted to adjust the position of the L-shaped positioning seat according to the specific usage of different users.

[0013] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of a quick-prototype milling fixture for automotive plastic parts provided in this utility model; Figure 2 This utility model provides a partial three-dimensional structural diagram of a rapid prototyping fixture for automotive plastic parts. Figure 1 ; Figure 3 This utility model provides a quick-prototype milling fixture for automotive plastic parts. Figure 2 Top view; Figure 4 This utility model provides a partial three-dimensional structural diagram of a rapid prototyping fixture for automotive plastic parts. Figure 2 .

[0015] Explanation of reference numerals in the attached figures 1. Base; 2. L-shaped positioning seat; 3. L-shaped clamping bar; 4. Slider; 5. Mounting seat; 6. Plastic parts; 7. Threaded rod; 8. Nut; 9. Cam rod; 10. Mounting slot; 11. Mounting bolt; 12. Slide groove; 13. Washer; 14. Corner part; 15. Connecting strip. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0017] In this utility model, unless otherwise stated, directional words such as "upper," "lower," "inner," and "outer" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0018] like Figure 1-4As shown, a quick-release milling fixture for automotive plastic prototypes includes: a base 1 with a plurality of mounting holes arranged in a matrix, an L-shaped positioning seat 2 fixedly mounted on the base 1, and an L-shaped clamping bar 3 that matches the L-shaped positioning seat 2. Both ends of the L-shaped clamping bar 3 are connected to both ends of the L-shaped positioning seat 2 through quick-release locking units. The inner corners of the L-shaped clamping bar 3 and the L-shaped positioning seat 2 are respectively attached to two opposite corners of the plastic part 6. The quick-release locking unit includes a slider 4 slidably mounted on one end of the L-shaped positioning seat 2, a mounting seat 5 detachably mounted on the L-shaped positioning seat 2 and located near the corner of the L-shaped positioning seat 2, and a quick-release locking mechanism for pushing the slider 4 closer to the mounting seat 5. The two ends of the L-shaped clamping bar 3 slide horizontally through the corresponding slider 4.

[0019] In the above technical solution, when it is necessary to clamp the plastic part 6, after opening the quick-release locking mechanism, the end of the L-shaped positioning seat 2 can be inserted into the slider 4, and the slider 4 can slide away from the mounting seat 5, increasing the area enclosed by the L-shaped positioning seat 2 and the L-shaped clamping strip 3. The plastic part 6 can be directly placed between the L-shaped positioning seat 2 and the L-shaped clamping strip 3, and then the quick-release locking mechanism can be closed, so that the L-shaped positioning seat 2 and the L-shaped clamping strip 3 tightly clamp the two opposite corners of the plastic part, which can quickly clamp the plastic part 6 and facilitate small batch processing; and the position of the L-shaped positioning seat 2 and the L-shaped clamping strip 3 facilitates the processing of the top and side walls of the plastic part 6. A pair of quick-release locking units can move the corner of the L-shaped clamping bar 3 close to the corner of the L-shaped positioning seat 2, thereby clamping the plastic part 6. The position of the mounting seat 5 on the L-shaped positioning seat 2 can be adjusted, thereby adjusting the clamping range of the L-shaped positioning seat 2 and the L-shaped clamping bar 3, which is highly practical. The base 1 has several mounting holes arranged in a matrix, and the position of the L-shaped positioning seat 2 can be adjusted according to the specific usage of different users.

[0020] In a preferred embodiment of the present invention, the quick-release locking mechanism includes a threaded rod 7 that slides through the slider 4 and the mounting base 5, a nut 8 that is threadedly sleeved on the end of the threaded rod 7 near the corner of the L-shaped positioning base 2, and a cam rod 9 that is hinged to the end of the threaded rod 7 away from the nut 8 via a hinge shaft.

[0021] In the above technical solution, the plastic block is placed between the L-shaped positioning seat 2 and the L-shaped clamping bar 3, and then the corresponding cam rod 9 is rotated to drive the slider 4 to move closer to the mounting seat 5, thereby driving the L-shaped clamping bar 3 to clamp the plastic part 6; after processing, the cam rod 9 is rotated in the opposite direction to remove the processed plastic part 6 upwards, which is convenient and quick when clamping and removing the plastic part 6. By rotating the nut 8 to adjust its position on the threaded rod 7, the distance between the slider 4 and the mounting base 5 can be adjusted. That is, the length of the threaded rod 7 is the maximum adjustment range of the slider 4. The clamping range can be quickly adjusted by rotating the nut 8. When the plastic part 6 to be clamped exceeds the range that can be adjusted by the nut 8, the position of the mounting part on the L-shaped positioning base 2 is adjusted to fit the corresponding plastic part 6, which is highly practical.

[0022] In a preferred embodiment of the present invention, the mounting base 5 is slidably mounted on the end of the L-shaped positioning base 2. The end of the L-shaped positioning base 2 is provided with a plurality of mounting slots 10 spaced apart along its length direction. The mounting base 5 is equipped with mounting bolts 11 that pass through the corresponding mounting slots 10.

[0023] In the above technical solution, the mounting bolt 11 is loosened and removed, at which point the mounting seat 5 can slide on the L-shaped positioning seat 2. The mounting bolt 11 is then assembled on other mounting slots 10 to adjust the position of the mounting seat 5.

[0024] In a preferred embodiment of this utility model, the upper surface of the end of the L-shaped positioning seat 2 and the side away from the plastic part 6 are recessed with a groove 12 of the same length direction, and the slider 4 and the mounting seat 5 are both provided with a sliding part that matches the corresponding groove 12.

[0025] In the above technical solution, the slide groove 12 is located on the upper surface of the end of the L-shaped positioning seat 2 and on the side away from the plastic part 6, so as not to affect the L-shaped positioning seat 2 from holding the plastic part 6.

[0026] In a preferred embodiment of the present invention, the quick-release locking mechanism further includes a washer 13 sleeved on the threaded rod 7. The washer 13 is located between the slider 4 and the cam rod 9, and the contact surface between the washer 13 and the cam rod 9 is an arc-shaped wall.

[0027] In a preferred embodiment of this utility model, the mounting groove 10 is a countersunk hole.

[0028] In the above technical solution, the countersunk hole can hide the head of the mounting bolt 11, and prevent the mounting ring bolt from affecting the fit of the plastic part 6 to the L-shaped positioning seat 2.

[0029] In a preferred embodiment of the present invention, the L-shaped clamping bar 3 includes a corner portion 14 that can contact the plastic part 6 and a pair of connecting bars 15 that are fixedly connected to the corner portion 14 and spaced apart from the plastic part 6.

[0030] In the above technical solution, only the corner portion 14 contacts the plastic part 6, which reduces the contact area between the L-shaped clamping strip 3 and the plastic part 6, and is beneficial for milling the plastic part 6.

[0031] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0032] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0033] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A quick sample milling tool for plastic automobile parts, characterized in that, include: A base (1) with a number of mounting holes arranged in a matrix, an L-shaped positioning seat (2) fixedly mounted on the base (1), and an L-shaped clamping strip (3) matching the L-shaped positioning seat (2). Both ends of the L-shaped clamping strip (3) are connected to both ends of the L-shaped positioning seat (2) through quick-release locking units. The inner corners of the L-shaped clamping strip (3) and the L-shaped positioning seat (2) are respectively attached to the two opposite corners of the plastic part (6). The quick-release locking unit includes a slider (4) slidably mounted on one end of an L-shaped positioning seat (2), a mounting seat (5) detachably mounted on an L-shaped positioning seat (2) and located near the corner of the L-shaped positioning seat (2) of the slider (4), and a quick-release locking mechanism for pushing the slider (4) closer to the mounting seat (5). The two ends of the L-shaped clamping bar (3) slide horizontally through the corresponding slider (4).

2. The rapid prototyping tooling apparatus for milling plastic automotive parts of claim 1, wherein, The quick-release locking mechanism includes a threaded rod (7) that slides through the slider (4) and the mounting base (5), a nut (8) that is threaded onto the end of the threaded rod (7) near the corner of the L-shaped positioning base (2), and a cam rod (9) that is hinged to the end of the threaded rod (7) away from the nut (8) via a hinge shaft.

3. The rapid prototyping tooling apparatus for plastic automotive parts of claim 1, wherein, The mounting base (5) is slidably mounted on the end of the L-shaped positioning base (2). The end of the L-shaped positioning base (2) is provided with a plurality of mounting slots (10) spaced along its length. The mounting base (5) is equipped with mounting bolts (11) that pass through the corresponding mounting slots (10).

4. The rapid prototyping tooling apparatus for plastic automotive parts of claim 3, wherein, The upper surface of the L-shaped positioning seat (2) and the side away from the plastic part (6) are recessed with grooves (12) of the same length direction. The slider (4) and the mounting seat (5) are both provided with sliding parts that match the corresponding grooves (12).

5. The rapid prototyping tooling apparatus for plastic automotive parts of claim 2, wherein, The quick-release locking mechanism also includes a washer (13) sleeved on the threaded rod (7). The washer (13) is located between the slider (4) and the cam rod (9). The contact surface between the washer (13) and the cam rod (9) is an arc-shaped wall.

6. The rapid prototyping tooling apparatus for plastic automotive parts of claim 3, wherein, The mounting slot (10) is a countersunk hole.

7. The rapid prototyping tooling apparatus for plastic automotive parts of claim 1, wherein, The L-shaped clamping bar (3) includes a corner portion (14) that can contact the plastic part (6) and a pair of connecting bars (15) that are fixedly connected to the corner portion (14) and spaced apart from the plastic part (6).

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