Fixing device for automobile plastic part machining

Abstract

The invention relates to the technical field of automobile plastic part machining, and particularly discloses an automobile plastic part machining fixing device which comprises fixing seats symmetrically arranged on the two sides of a conveyor for automobile plastic part machining. The adjusting shafts are rotationally connected to the fixing base respectively, the two adjusting shafts are coaxially arranged, the ends, away from each other, of the adjusting shafts extend out of the fixing base and are provided with adjusting gears, and the ends, close to each other, of the adjusting shafts are provided with hydraulic clamping arms capable of clamping the ends of the automobile plastic parts; the rack sets are symmetrically arranged on the two sides of the conveyor for machining the automobile plastic parts, each rack set comprises a first rack and a second rack which are located at the top and the bottom of an adjusting gear respectively, and the first racks and the second racks are arranged in a staggered mode and engaged with the adjusting gears respectively. And the plastic parts are overturned by a manipulator, so that the processing cost of the automobile plastic parts is high, and the stability needs to be improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile plastic parts processing, and specifically discloses a fixing device for automobile plastic parts processing. Background Art

[0002] Automotive plastic accessories play a vital role in modern automobile manufacturing. They not only enhance the aesthetics of the vehicle body, but also provide the necessary protection for the vehicle, such as bumper housings, instrument panels, door interior panels, etc.

[0003] For plastic parts, commonly used processing methods include injection molding, extrusion molding, blow molding, etc. For example, injection molding is a method of injecting molten plastic into a mold cavity and obtaining a molded product after cooling and solidification. After injection molding, plastic parts also need to be surface treated to improve their corrosion resistance and aesthetics. There are many ways to treat the surface, such as deburring, spraying, coating, etc.

[0004] In the process of surface treatment of plastic accessories, the clamp is one of the indispensable parts. Usually, after the plastic accessories are transferred from the conveyor to the corresponding processing station, the clamp on the processing station clamps the plastic accessories to perform surface treatment on them. With the improvement of the automation degree of the production line, some clamps are set on the conveyor and move synchronously with the plastic accessories along each processing station. This setting method has obvious advantages: the plastic accessories can be driven to complete multiple surface treatment processes by clamping with a single clamp, but the disadvantage is that it is difficult to flip the plastic accessories with this clamping method. During processing, after the surface treatment of one side of the plastic accessories is completed, the assistance of the manipulator is required to flip the plastic accessories and clamp them again, so as to facilitate the surface treatment of the other side of the plastic accessories. This process not only requires more equipment and monitoring components, but also has complex overall control and weak anti-interference ability, resulting in high cost and stability problems in the processing of automotive plastic accessories. Therefore, in view of this, the inventor provides a fixing device for processing automotive plastic accessories to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that in the traditional surface treatment process of automobile plastic parts, the plastic parts are turned over by a robot, resulting in high cost and stability in the processing of automobile plastic parts.

[0006] In order to achieve the above-mentioned object, the basic scheme of the present invention provides a fixing device for processing automobile plastic parts, comprising:

[0007] Fixed seats symmetrically arranged on both sides of the conveyor for processing automobile plastic parts;

[0008] The adjusting shafts connected to the fixing seats are respectively rotated, the two adjusting shafts are coaxially arranged, the ends of the adjusting shafts away from each other extend out of the fixing seats and are provided with adjusting gears, and the ends of the adjusting shafts close to each other are provided with hydraulic clamping arms that can clamp the ends of automobile plastic accessories;

[0009] The invention discloses a rack set symmetrically arranged on both sides of a conveyor for processing automobile plastic parts, wherein the rack set comprises a first rack and a second rack respectively located at the top and the bottom of an adjusting gear.

[0010] The principles and effects of this basic solution are:

[0011] Compared with the prior art, the present invention sets an adjusting shaft on the fixed seat, uses the adjusting shaft to install the hydraulic clamping arm, and uses the first rack and the second rack to mesh with the adjusting gear respectively, so that when the fixed seat moves under the drive of the conveyor, it will drive the adjusting shaft and the adjusting gear to move. When the adjusting gear meshes with the first rack or the second rack during the movement, it will drive the adjusting gear to rotate, and then drive the adjusting shaft and the hydraulic clamping arm on the adjusting shaft to rotate, thereby driving the automobile plastic parts clamped by the hydraulic clamping arm to rotate, that is, to achieve angle adjustment and even flipping of the automobile plastic parts during the clamping process. The present invention uses the mutual action of the mechanical structure to achieve the angle adjustment and flipping of the automobile plastic parts, which not only has low control cost, but also has strong anti-interference ability. It solves the problem that in the traditional surface treatment process of automobile plastic parts, the plastic parts are flipped by the robot, resulting in high cost and stability in the processing of automobile plastic parts.

[0012] Further, the adjustment shaft comprises:

[0013] A gear shaft is threadedly connected to the fixing seat, one end of the gear shaft is located in the fixing seat, and the other end of the gear shaft extends out of the fixing seat and is connected to the adjusting gear;

[0014] A rotating shaft is rotatably connected to the fixing seat, one end of the rotating shaft is spline-connected to the gear shaft, and the other end of the rotating shaft is connected to the hydraulic clamp.

[0015] Through this setting method, by utilizing the threaded cooperation between the gear shaft and the fixed seat, movement can be avoided when the adjustment gear is not in contact with the first rack or the second rack, thereby avoiding position deviation of the automotive plastic parts clamped by the hydraulic clamping arm during processing or transportation.

[0016] Furthermore, one end of the fixing seat is provided with an internal thread hole, the outer wall of the gear shaft is provided with an external thread matching the internal thread hole, the inner wall of one end of the gear shaft is provided with an internal spline groove, and one end of the rotating shaft extends into the gear shaft and is provided with an external spline matching the internal spline groove. This method facilitates the mutual cooperation between the gear shaft and the rotating shaft, and between the gear shaft and the fixing seat.

[0017] Furthermore, the difference between the tooth width of the first rack and the second rack and the tooth width of the adjusting gear is greater than the axial movement distance of the gear shaft, so as to prevent the first rack, the second rack and the adjusting gear from being separated from each other due to the movement of the gear shaft during rotation, and further avoid deviation in the rotation adjustment of the automobile plastic clamped by the hydraulic clamp arm.

[0018] Furthermore, the gear shaft and the rotating shaft are both hollow shafts, and the hydraulic clamping arm comprises:

[0019] A hydraulic box connected to the end of the rotating shaft;

[0020] A push rod is slidably connected to one side of the hydraulic box, the free end of the push rod extends out of the rotating shaft and the gear shaft, and a guide groove that can drive the push rod to move axially is provided on the side of the conveyor for processing automobile plastic parts;

[0021] A locking rod slidably and sealingly connected to the other side of the hydraulic box;

[0022] A spring is arranged in the hydraulic box and drives the push rod to return.

[0023] With this arrangement, when the fixed seat moves driven by the conveyor, it will drive the adjusting shaft, the adjusting gear and the push rod to move. When the push rod moves along the guide groove, axial movement can be generated. At the same time, with the elastic potential energy of the spring, the locking rod can be driven to move axially, thereby making the locking rod close to or away from the surface of the automobile plastic accessories, thereby achieving the clamping or release of the automobile plastic accessories.

[0024] Furthermore, the hydraulic clamp arm also includes a piston that is slidably sealed in the hydraulic box, and one end of the piston close to the push rod is provided with a connection seat connected to the end of the push rod. With this arrangement, when the push rod pushes the piston, the oil in the hydraulic box is squeezed, thereby better pushing the locking rod to clamp the automobile plastic parts.

[0025] Furthermore, it also includes mounting frames symmetrically arranged on both sides of the conveyor for processing automobile plastic parts, the first rack, the second rack and the guide rail groove are all arranged on the mounting frames, and the mounting frames provide a foundation for the first rack, the second rack and the guide rail groove to be installed and fixed.

[0026] Furthermore, it also includes a bearing platform arranged below the hydraulic clamping arm and capable of accommodating the end of the automobile plastic part. The bearing platform is used to accommodate the automobile plastic part, making it easier for the hydraulic clamping arm to clamp the automobile plastic part.

[0027] Furthermore, the bearing platform is slidably connected to the fixing seat, and a plurality of connecting rods are arranged between the bearing platform and the gear shaft. This arrangement makes it possible for the bearing platform to move together when the gear shaft rotates and moves due to the threaded fit, so that after the automobile plastic part is turned over, the bearing platform is stored, avoiding the blocking of the bearing platform and affecting the integrity of the surface treatment of the other side of the automobile plastic part.

[0028] Furthermore, a rotating disk is provided on each side of the fixing seats that are close to each other, the rotating disk is fixedly connected to the side wall of the rotating shaft, the bearing platform and the hydraulic clamping arm are both connected to the rotating disk, and the connecting rod passes through the rotating disk. By providing the rotating disk, the compactness of the overall structure in the fixing seat can be improved, and the rotating shaft, the hydraulic clamping arm and the bearing platform can be limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 An axonometric view of a fixing device for processing automobile plastic parts proposed in an embodiment of the present application is shown;

[0031] Figure 2 A schematic diagram of a guide rail groove in a fixing device for processing automobile plastic parts proposed in an embodiment of the present application is shown;

[0032] Figure 3 A schematic diagram of one end of a fixing seat in a fixing device for processing automobile plastic parts proposed in an embodiment of the present application is shown;

[0033] Figure 4 An axonometric view of a fixing seat in a fixing device for processing automobile plastic parts proposed in an embodiment of the present application is shown;

[0034] Figure 5 A cross-sectional view of a fixing seat in a fixing device for processing automobile plastic parts proposed in an embodiment of the present application is shown;

[0035] Figure 6 A cross-sectional view of a hydraulic box of a fixing device for processing automobile plastic parts proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0036] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0037] The figure marks in the drawings of the specification include: conveyor 1, base plate 2, fixed seat 3, automotive plastic parts 4, mounting frame 5, guide rail groove 6, inclined surface 7, first rack 8, second rack 9, adjusting gear 10, contact section 11, rotating disk 12, bearing platform 13, hydraulic box 14, gear shaft 15, connecting section 16, rotating shaft 17, connecting rod 18, retaining ring 19, fixing ring 20, piston 21, connecting seat 22, spring 23, sub-chamber 24, slider 25, locking rod 26.

[0038] A fixing device for processing automobile plastic parts, for example Figure 1 As shown, during the process of surface treatment of plastic parts, automobile plastic parts are transported by a belt-driven or chain-driven conveyor 1. In order to ensure the structural strength, the belt drives or chain drives on both sides are supported by double chains or double belts, and limit plates are arranged under the chains or belts and on the side walls to prevent falling and shaking.

[0039] like Figure 1 As shown, the fixing device in this embodiment includes a fixing seat 3 on both sides of the conveyor 1 and a mounting frame 5 respectively arranged at the side ends of both sides of the conveyor 1. The fixing seat 3 is installed on the double chain or double belt located on the same side through the bottom plate 2, and the mounting frame 5 is fixed to the bracket, limit plate, etc. of the conveyor 1. Figure 2 As shown, on the mounting frame 5, a first rack 8, a guide rail groove 6 and a second rack 9 are respectively arranged from top to bottom, and an inclined surface 7 is provided at the end of the guide rail groove 6.

[0040] like Figure 3 As shown, a push rod and an adjusting gear 10 are provided at the back center of the fixing seat 3, and the adjusting gear 10 is provided on the push rod through an adjusting shaft sleeve, and the end of the push rod passes through the gear shaft 15 and is highly adapted to the guide rail groove 6, and the first rack 8 and the second rack 9 are respectively located at the top and the bottom of the adjusting gear 10, and the first rack 8 and the second rack 9 are staggered, so that the adjusting gear 10 is only engaged with one of the first rack 8 or the second rack 9 during the movement. In this embodiment, taking the flipping of automobile plastic accessories as an example, the number of teeth of the first rack 8 and the second rack 9 is set to half of the adjusting gear 10, so that when the adjusting gear 10 is engaged with the first rack 8 or the second rack 9, it rotates 180°, and because the first rack 8 and the second rack 9 are respectively located at the top and the bottom of the adjusting gear 10, the rotation direction of the adjusting gear 10 when engaged with the first rack 8 or the second rack 9 is opposite.

[0041] like Figure 4As shown, a rotating disk 12 is rotatably installed in front of the fixed seat 3, a hydraulic clamping arm is installed at the center of the rotating disk 12, and a bearing platform 13 is installed below the hydraulic clamping arm. The two fixed seats 3 are symmetrical to each other, and the automobile plastic accessories are placed on the two bearing platforms 13. The hydraulic clamping arms clamp the automobile plastic accessories from both sides.

[0042] like Figure 5 As shown, the adjusting shaft in this embodiment is composed of two gear shafts 15 and a rotating shaft 17 that are spline-connected to each other, and both the gear shaft 15 and the rotating shaft 17 are hollow shafts, wherein the gear shaft 15 is threadedly connected to the fixing seat 3 and the left end of the gear shaft 15 extends out of the fixing seat 3 and is connected to the adjusting gear 10, the fixing seat 3 is provided with an internal threaded hole at the rear end, and the outer wall of the gear shaft 15 is provided with an external thread that matches the internal threaded hole; the rotating shaft 17 is rotatably connected to the fixing seat 3, the left end of the rotating shaft 17 is spline-connected to the gear shaft 15, the right end of the rotating shaft 17 is connected to the hydraulic clamp by screw fixing, the inner wall of the right end of the gear shaft 15 is provided with an internal spline groove, the left end of the rotating shaft 17 extends into the gear shaft 15 and is provided with an external spline that matches the internal spline groove.

[0043] Since the gear shaft 15 is threadedly connected to the fixing seat 3, the gear shaft 15 will move during rotation. In this embodiment, the difference between the tooth width of the first rack 8, the second rack 9 and the tooth width of the adjusting gear 10 is set to be greater than half of the external thread pitch.

[0044] like Figure 5 As shown, in this embodiment, the push rod includes a contact section 11 and a connecting section 16. The contact section 11 is connected to the hollow part in the gear shaft 15 and extends out of the gear shaft 15. The connecting section 16 is integrally formed with the contact section 11 and connected to the hollow part of the rotating shaft 17. The connecting section 16 is provided with a retaining ring 19 adapted to the end of the rotating shaft 17. The bearing platform 13 is slidably connected to the rotating disk 12, that is, integrally slidably connected to the fixed seat 3. A plurality of connecting rods 18 are provided between the bearing platform 13 and the gear shaft 15, and the connecting rods 18 pass through the rotating disk 12. A fixing ring 20 is installed at the front end of the fixed seat 3. The fixing ring 20 is fixed to the fixed seat 3 by bolts, and the position of the rotating disk 12 is relatively limited to prevent the rotating disk 12 from being separated from the front end of the fixed seat 3, and the left end of the rotating disk 12 is fixed to the wall surface of the rotating shaft 17.

[0045] like Figure 6As shown, the hydraulic clamp arm includes a hydraulic box, a piston 21 connected in a sliding seal in the hydraulic box, a spring 23 provided between the piston 21 and one side of the hydraulic box, and a plurality of locking rods 26 provided on the other side of the hydraulic box. One end of the push rod extends into the hydraulic box and is connected to the piston 21 through a connecting seat 22, and the two ends of the spring 23 are respectively fixed to the side wall of the hydraulic box and the connecting seat 22 through hooks. A plurality of sub-cavities 24 are arranged on the inner side wall of the hydraulic box, and sliders 25 are respectively connected in a sliding seal in the sub-cavities 24, and one end of the locking rod 26 extends into the sub-cavity 24 and is connected to the slider 25, and hydraulic oil is filled between the piston 21 and the slider 25, and the end of the position where the hydraulic oil is not filled in the liquid box is connected to the air.

[0046] In this embodiment, the automobile plastic parts are placed on the bearing platforms 13 on both sides at the end of the conveyor 1. As the conveyor 1 moves, the fixed seat 3 is driven to move. During the movement of the fixed seat 3, the contact section 11 of the push rod cooperates with the inclined surface 7 at the end of the guide groove 6. The inclined surface 7 squeezes the push rod inward, and the connecting section 16 of the push rod moves into the hydraulic box and pushes the piston 21. Under the action of the hydraulic pressure, each locking rod 26 extends and presses against the side of the automobile plastic parts to achieve the clamping of the automobile plastic parts. At the same time, during this process, the retaining ring 19 on the connecting section 16 of the push rod completely rotates the rotating shaft 17 The fixing seat 3 is fully pressed against the fixing seat 3, and the clamping state is maintained during the movement, so that the automobile plastic parts can be continuously clamped at the processing station; after the upper surface processing of the automobile plastic parts is completed, the fixing seat 3 continues to move, and during its movement, the adjusting gear 10 and the second rack 9 are meshed with each other, causing the adjusting gear 10 to drive the gear shaft 15, the rotating shaft 17, the hydraulic clamping arm and the rotating disk 12 to rotate 180 degrees, so that the clamped automobile plastic parts are turned over, and during the turning process, the threaded cooperation between the gear shaft 15 and the fixing seat 3 will cause the gear shaft 15 to rotate 180 degrees. The wheel shaft 15 moves relative to the fixing seat 3, and drives the bearing platform 13 to move through the connecting rod 18, so that the bearing platform 13 is stored in the rotating disk 12, so as to avoid affecting the integrity of the surface treatment of the other side of the automobile plastic parts due to the obstruction of the bearing platform 13. After the surface treatment of the other side of the automobile plastic parts, the fixing seat 3 continues to move, and in the process of its movement, the adjusting gear 10 and the first rack 8 are meshed with each other, so that the adjusting gear 10 drives the gear shaft 15, the rotating shaft 17, the hydraulic clamping arm and the rotating disk 12 to rotate 180 degrees in the opposite direction, so that the clamped The automobile plastic parts are flipped in the reverse direction, and the bearing platform 13 is extended from the rotating disk 12 at the same time, and then the fixed seat 3 moves to the inclined surface 7 at the tail end of the guide groove 6, the force of the guide groove 6 on the push rod is reduced, and the spring 23 drives the piston 21 and the push rod to move in the reverse direction, so that the locking rod 26 moves in the reverse direction, and then the automobile plastic parts are released and supported by the bearing platform 13, and the automobile plastic parts after surface treatment can be removed. Of course, if multiple surface processing of the automobile plastic parts is involved, the first rack 8 and the second rack 9 can be set on the mounting frame 5 multiple times according to the flipping needs in the actual processing process.

[0047] Compared with the prior art, the present invention sets an adjusting shaft on the fixed seat 3, uses the adjusting shaft to install the hydraulic clamping arm, and uses the first rack 8 and the second rack 9 to mesh with the adjusting gear 10 respectively, so that when the fixed seat 3 moves under the drive of the conveyor 1, it will drive the adjusting shaft and the adjusting gear 10 to move. When the adjusting gear 10 meshes with the first rack 8 or the second rack 9 during the movement, it will drive the adjusting gear 10 to rotate, and then drive the adjusting shaft and the hydraulic clamping arm on the adjusting shaft to rotate, thereby driving the automobile plastic parts clamped by the hydraulic clamping arm to rotate, that is, to achieve angle adjustment and even flipping of the automobile plastic parts during the clamping process. The present invention adopts the mutual action of the mechanical structure to achieve the angle adjustment and flipping of the automobile plastic parts, which not only has low control cost, but also has strong anti-interference ability, and solves the problem that the traditional surface treatment process of automobile plastic parts relies on the manipulator to flip the plastic parts, resulting in high cost and stability in the processing of automobile plastic parts.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fixing device for processing automobile plastic parts, characterized in that: include: Fixed seats symmetrically arranged on both sides of the conveyor for processing automobile plastic parts; The adjusting shafts connected to the fixing seats are respectively rotated, the two adjusting shafts are coaxially arranged, the ends of the adjusting shafts away from each other extend out of the fixing seats and are provided with adjusting gears, and the ends of the adjusting shafts close to each other are provided with hydraulic clamping arms that can clamp the ends of automobile plastic accessories; The rack group is symmetrically arranged on both sides of the conveyor for processing automobile plastic parts. The rack group includes a first rack and a second rack respectively located at the top and bottom of the adjusting gear. The first rack and the second rack are staggered and meshed with the adjusting gear respectively.

2. A fixing device for processing automobile plastic parts according to claim 1, characterized in that: The adjusting shaft comprises: A gear shaft is threadedly connected to the fixing seat, one end of the gear shaft is located in the fixing seat, and the other end of the gear shaft extends out of the fixing seat and is connected to the adjusting gear; A rotating shaft is rotatably connected to the fixing seat, one end of the rotating shaft is spline-connected to the gear shaft, and the other end of the rotating shaft is connected to the hydraulic clamp.

3. The fixing device for processing automobile plastic parts according to claim 2, characterized in that: One end of the fixing seat is provided with an internal threaded hole, the outer wall of the gear shaft is provided with an external thread adapted to the internal threaded hole, the inner wall of one end of the gear shaft is provided with an internal spline groove, and one end of the rotating shaft extends into the gear shaft and is provided with an external spline adapted to the internal spline groove.

4. A fixing device for processing automobile plastic parts according to claim 3, characterized in that: The difference between the tooth widths of the first rack and the second rack and the tooth width of the adjusting gear is greater than the axial movement distance of the gear shaft.

5. A fixing device for processing automobile plastic parts according to any one of claims 2 to 4, characterized in that: The gear shaft and the rotating shaft are both hollow shafts, and the hydraulic clamping arm comprises: A hydraulic box connected to the end of the rotating shaft; A push rod is slidably connected to one side of the hydraulic box, the free end of the push rod extends out of the rotating shaft and the gear shaft, and a guide groove that can drive the push rod to move axially is provided on the side of the conveyor for processing automobile plastic parts; A locking rod slidably and sealingly connected to the other side of the hydraulic box; A spring is arranged in the hydraulic box and drives the push rod to return.

6. A fixing device for processing automobile plastic parts according to claim 5, characterized in that: The hydraulic clamp arm also includes a piston which is slidably sealed in the hydraulic box, and one end of the piston close to the push rod is provided with a connecting seat which is connected to the end of the push rod.

7. A fixing device for processing automobile plastic parts according to claim 5 or 6, characterized in that: It also includes mounting frames symmetrically arranged on both sides of a conveyor for processing automobile plastic parts, and the first rack, the second rack and the guide rail groove are all arranged on the mounting frames.

8. The fixing device for processing automobile plastic parts according to claim 2, characterized in that: It also includes a bearing platform which is arranged below the hydraulic clamping arm and can accommodate the end of the automobile plastic accessory.

9. A fixing device for processing automobile plastic parts according to claim 8, characterized in that: The bearing platform is slidably connected to the fixing seat, and a plurality of connecting rods are arranged between the bearing platform and the gear shaft.

10. A fixing device for processing automobile plastic parts according to claim 9, characterized in that: A rotating disk is provided on one side of the fixing seats close to each other. The rotating disk is fixedly connected to the side wall of the rotating shaft. The bearing platform and the hydraulic clamping arm are both connected to the rotating disk. The connecting rod passes through the rotating disk.

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