An environment-friendly surface roughening treatment device for automotive interior plastic parts

Abstract

The present invention discloses an environment-friendly surface roughening treatment device for automotive interior plastic parts, which includes a base, a roughening outer cylinder, a roughening inner cylinder, a cover plate assembly, a plastic part fixture and a fixture lifting drive mechanism. The roughening outer cylinder is sleeved outside the roughening inner cylinder. An outer cylinder electrode plate group is arranged on the inner wall of the roughening outer cylinder, and an inner cylinder electrode plate group is arranged on the outer wall of the roughening inner cylinder. A lower end electrode plate group is arranged inside the base. The cover plate assembly is arranged at the upper end of the roughening outer cylinder, and an upper end electrode plate group is arranged on the lower side of the cover plate assembly. The plastic part fixture is arranged on the fixture lifting drive mechanism and is driven by the fixture lifting drive mechanism to lift in the vertical direction. A first charged ultra-fine salt powder feed port group is arranged on the upper side of the roughening outer cylinder, and a second charged ultra-fine salt powder feed port group is arranged on the lower side of the roughening outer cylinder. The present invention is non-toxic and harmless, meets the environmental protection requirements, and the overall process operation is simple and the cost is low.

Description

Technical Field

[0001] The present invention relates to a roughening device, in particular to an environment-friendly surface roughening device for automotive interior plastic parts, belonging to the roughening device for automotive interior plastic parts. Background Art

[0002] Automotive interior plastic parts usually need to be chrome-plated on the surface after molding. Before the chrome-plating treatment, the interior plastic parts also need to be pretreated such as cleaning and roughening to ensure the quality of the subsequent chrome-plating treatment. The traditional roughening of plastic parts mainly adopts the method of soaking and roughening with chemical agents, and a large number of micropores are corroded on the surface of the plastic parts by the chemical agents. The traditional roughening chemical agents are usually toxic and cannot be directly discharged, and need to be environmentally treated. Moreover, even after treatment, they will still cause harm to the environment. Therefore, the current mainstream roughening processes are all researching environment-friendly roughening agents to solve the problem of non-environmental protection of traditional roughening agents. Although certain achievements have been made, the cost is still relatively high. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an environment-friendly surface roughening device for automotive interior plastic parts, which is environmentally friendly and has a relatively low cost.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is as follows:

[0005] An environment-friendly surface roughening device for automotive interior plastic parts includes a base, a roughening outer cylinder, a roughening inner cylinder, a cover plate assembly, a plastic part fixture, and a fixture lifting drive mechanism. The roughening outer cylinder is sleeved outside the roughening inner cylinder, and both the lower ends of the roughening outer cylinder and the roughening inner cylinder are fixed on the base. An outer cylinder electrode plate group is arranged on the inner wall of the roughening outer cylinder, and an inner cylinder electrode plate group is arranged on the outer wall of the roughening inner cylinder. The outer cylinder electrode plate group and the inner cylinder electrode plate group are arranged opposite to each other and have opposite polarities. The gap between the roughening outer cylinder and the roughening inner cylinder is a roughening cavity. A lower end electrode plate group is arranged in the base at the lower end of the roughening cavity. The cover plate assembly is arranged at the upper end of the roughening outer cylinder, and an upper end electrode plate group is arranged on the lower side of the cover plate assembly. The lower end electrode plate group and the upper end electrode plate group are arranged opposite to each other and have opposite polarities. The polarities of the outer cylinder electrode plate group and the inner cylinder electrode plate group, and the lower end electrode plate group and the upper end electrode plate group are periodically and alternately changed. The plastic part fixture is arranged on the fixture lifting drive mechanism and is driven by the fixture lifting drive mechanism to lift vertically. A first charged ultra-fine salt powder feed port group is arranged on the upper side of the roughening outer cylinder, and a second charged ultra-fine salt powder feed port group is arranged on the lower side of the roughening outer cylinder.

[0006] Further, the roughening outer cylinder and the roughening inner cylinder are coaxially arranged. The top of the roughening inner cylinder is closed, and the height of the roughening outer cylinder is higher than that of the roughening inner cylinder.

[0007] Further, an outer cylinder insulating baffle is arranged inside the outer cylinder electrode plate group, and an inner cylinder insulating baffle is arranged outside the inner cylinder electrode plate group.

[0008] Further, the first charged ultrafine salt powder feed port group and the second charged ultrafine salt powder feed port group each include a plurality of feed ports, each feed port is arranged along the tangent direction of the roughened outer cylinder, one end of the feed port passes through the inner wall of the roughened outer cylinder and is fixed on the outer cylinder insulating baffle and communicates with the inner cavity of the outer cylinder insulating baffle, the plurality of feed ports are equally spaced along the circumferential direction of the roughened outer cylinder, and the plasma spray gun extracts the ultrafine salt powder in the sealed container through the negative pressure generated by the high-speed plasma gas flow and makes the ultrafine salt powder carry high-voltage charges and then sprays it into the roughened cavity through the first charged ultrafine salt powder feed port group and the second charged ultrafine salt powder feed port group.

[0009] Further, the outer cylinder electrode plate group and the inner cylinder electrode plate group include several circles of electrode plate circles, each circle of electrode plate circles includes several rectangular electrode plates, the several rectangular electrode plates are evenly distributed along the circumferential direction of the roughened outer cylinder or the roughened inner cylinder, the several circles of electrode plate circles are distributed along the vertical direction of the roughened outer cylinder or the roughened inner cylinder, and the rectangular electrode plates between adjacent two circles of electrode plate circles are staggered in the circumferential direction of the roughened outer cylinder or the roughened inner cylinder.

[0010] Further, the plastic part clamp includes a clamp body, a vertical beam, a horizontal beam and a main beam, the clamp body is horizontally fixed at the lower end of the vertical beam, the upper end of the vertical beam is fixed at one end of the horizontal beam, the horizontal beam is arranged along the radial direction of the roughened outer cylinder and the other end of the horizontal beam is fixed on the side surface of the lower end of the main beam, several horizontal beams are equally spaced along the circumferential direction of the main beam, and several pins are arranged on the side surface of the clamp body, and a plastic part clamping mechanism is arranged on one of the pins.

[0011] Further, the clamp lifting drive mechanism includes a lifting bracket, a first sliding rod, a second sliding rod, a lifting drive cylinder, an upper cross beam and two side brackets, the upper end of the main beam is fixed on the lifting bracket, the upper side of the lifting bracket is connected with the lifting drive cylinder and is driven by the lifting drive cylinder to lift in the vertical direction, the lifting drive cylinder is vertically fixed on the upper side of the upper cross beam, the lower ends of the first sliding rod and the second sliding rod are fixed on the lifting bracket, the upper ends of the first sliding rod and the second sliding rod are slidably arranged on the upper cross beam in the vertical direction, and the two ends of the upper cross beam are fixed on the base through the two side brackets.

[0012] Further, the cover plate assembly includes a cover plate, a radial groove cover plate, a radial connecting rod, a gear ring, a driving gear, a gear bracket, a gear motor, a working hole cover plate, a working hole vertical frame, and a working hole horizontal frame. A number of radial grooves matching the horizontal cross beam are formed on the cover plate. A number of working holes for the plastic parts to pass through are also formed on the cover plate, and one end of the radial groove communicates with the working hole. The shape of the radial groove cover plate matches the radial groove and the radial groove cover plate is arranged along the radius of the cover plate. One end of the radial connecting rod is connected to one end of the radial groove cover plate, and the other end of the radial connecting rod is fixed to the gear ring. A number of radial groove cover plates and radial connecting rods are evenly distributed along the circumferential direction of the cover plate. The driving gear is rotatably arranged on the gear bracket and meshes with the gear ring. The driving gear is driven to rotate by the gear motor. The working hole cover plate matches the working hole and corresponds to it one by one. The lower end of the working hole vertical frame is fixedly connected to the working hole cover plate, the upper end of the working hole vertical frame is fixedly connected to one end of the working hole horizontal frame, the other end of the working hole horizontal frame is fixed to the outside of the lifting bracket, and a number of working hole horizontal frames are evenly distributed along the circumferential direction of the lifting bracket.

[0013] Further, the plastic part clamping mechanism includes a first wedge-shaped clamp block, a second wedge-shaped clamp block, an arrow-shaped slider, a first tension spring, a second tension spring, a horizontal screw rod, a nut, and a nut driving mechanism. A radial sliding groove matching the first wedge-shaped clamp block and the second wedge-shaped clamp block is formed on the pin shaft. The first wedge-shaped clamp block and the second wedge-shaped clamp block are respectively slidably arranged at both ends of the radial sliding groove. The first tension spring and the second tension spring are arranged in the radial sliding groove along the radius of the pin shaft. One end of the first tension spring is connected to the first wedge-shaped clamp block, and the other end of the first tension spring is fixed inside the pin shaft. One end of the second tension spring is connected to the second wedge-shaped clamp block, and the other end of the second tension spring is fixed inside the pin shaft. An axial sliding groove matching the arrow-shaped slider is axially formed inside the pin shaft. The arrow-shaped slider is slidably arranged in the axial sliding groove. One end of the arrow-shaped slider is arrow-shaped, and the other end of the arrow-shaped slider is fixedly connected to one end of the horizontal screw rod. An inclined surface matching the arrow-shaped end of the arrow-shaped clamp block is formed on the inner side of the side surface of the first wedge-shaped clamp block and the second wedge-shaped clamp block opposite to the arrow-shaped end of the arrow-shaped clamp block. The other end of the horizontal screw rod is slidably arranged in the screw hole. The nut is sleeved on the outside of the horizontal screw rod and is threadedly connected to the horizontal screw rod. The nut is driven to rotate by the nut driving mechanism.

[0014] Further, the nut driving mechanism includes a first pulley, a synchronous belt, a second pulley, a transmission shaft, a first bevel gear, a second bevel gear, a reducer, and a bevel gear driving motor. The first pulley is sleeved outside the nut and fixedly connected to the nut. The transmission shaft is rotatably arranged in the horizontal beam along the length direction of the horizontal beam. The second pulley is fixed at one end of the transmission shaft. The synchronous belt is arranged on the first pulley and the second pulley. The first bevel gear is fixed at the other end of the transmission shaft. The second bevel gear is fixed on the output shaft of the reducer and meshes with the first bevel gear. The input shaft of the reducer is connected to the bevel gear driving motor and driven to rotate by the bevel gear driving motor.

[0015] Compared with the prior art, the present invention has the following advantages and effects: The present invention provides an environment-friendly surface roughening treatment device for automotive interior plastic parts. Charged ultrafine salt powder is sprayed into the roughening cavity, and then the charged ultrafine salt powder is directionally accelerated by an alternating electric field to bombard the surface of the plastic part at high speed, thereby physically roughening the surface of the plastic part. After completion, only the plastic part needs to be washed with water to dissolve the surface salt powder, which is non-toxic and harmless, meets the environmental protection requirements, and the overall process operation is simple and the cost is low. The present invention designs a plastic part fixture and a cover plate assembly structure with a unique structure, realizes the sealing of the plastic part feed port, and the plastic part clamping operation is convenient and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of an environment-friendly surface roughening treatment device for automotive interior plastic parts of the present invention.

[0017] Figure 2 is a top view of an environment-friendly surface roughening treatment device for automotive interior plastic parts of the present invention.

[0018] Figure 3 is a schematic diagram of the plastic part fixture of the present invention.

[0019] Figure 4 is a schematic diagram of the cover plate assembly of the present invention.

[0020] Figure 5 is a schematic diagram of the plastic part clamping mechanism of the present invention.

[0021] Figure 6 is a partial enlarged view of part A of the plastic part clamping mechanism of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to elaborate in detail the technical solutions adopted by the present invention to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. And, without creative labor, the technical means or technical features in the embodiments of the present invention can be replaced. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0023] As Figure 1 shown, an environment-friendly surface roughening treatment device for an automotive interior plastic part of the present invention includes a base 1, a roughening outer cylinder 2, a roughening inner cylinder 3, a cover plate assembly 4, a plastic part fixture 5 and a fixture lifting drive mechanism 6. The roughening outer cylinder 2 is sleeved outside the roughening inner cylinder 3, and both the lower ends of the roughening outer cylinder 2 and the roughening inner cylinder 3 are fixed on the base 1. An outer cylinder electrode plate group 7 is arranged on the inner wall of the roughening outer cylinder 2, and an inner cylinder electrode plate group 8 is arranged on the outer wall of the roughening inner cylinder 3. The outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8 are arranged opposite to each other and have opposite polarities. The gap between the roughening outer cylinder 2 and the roughening inner cylinder 3 is a roughening cavity. A lower end electrode plate group 9 is arranged in the base 1 at the lower end of the roughening cavity. The cover plate assembly 4 is arranged at the upper end of the roughening outer cylinder 2, and an upper end electrode plate group 10 is arranged on the lower side of the cover plate assembly 4. The lower end electrode plate group 9 and the upper end electrode plate group 10 are arranged opposite to each other and have opposite polarities. The polarities of the outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8 and the lower end electrode plate group 9 and the upper end electrode plate group 10 are periodically and alternately changed. The plastic part fixture 5 is arranged on the fixture lifting drive mechanism 6 and is driven by the fixture lifting drive mechanism 6 to lift and lower in the vertical direction. A first charged ultrafine salt powder feed port group 11 is arranged on the upper side of the roughening outer cylinder 2, and a second charged ultrafine salt powder feed port group 12 is arranged on the lower side of the roughening outer cylinder 2.

[0024] The roughening outer cylinder 2 and the roughening inner cylinder 3 are coaxially arranged. The top of the roughening inner cylinder 3 is closed, and the height of the roughening outer cylinder 2 is higher than that of the roughening inner cylinder 3. The upper end of the roughening outer cylinder 2 is open, and the cover plate assembly 4 is arranged at the upper end of the roughening outer cylinder 2 to completely cover it, thus forming a sealed roughening cavity.

[0025] An outer cylinder insulating baffle 13 is arranged inside the outer cylinder electrode plate group 7, and an inner cylinder insulating baffle 14 is arranged outside the inner cylinder electrode plate group 8. Through the arrangement of the insulating baffle, the outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8 are protected inside to avoid damage to the electrode plates by being bombarded by the charged ultrafine salt powder. The insulating plate is set as a detachable structure such as bolt fixation, which is convenient for replacement.

[0026] As Figure 2As shown, the first charged ultrafine salt powder feed port group 11 and the second charged ultrafine salt powder feed port group 12 respectively include a plurality of feed ports 15. Each feed port 15 is arranged along the tangent direction of the roughening outer cylinder 2. One end of the feed port 15 passes through the inner wall of the roughening outer cylinder 2 and is fixed on the outer cylinder insulating baffle 13 and communicates with the inner cavity of the outer cylinder insulating baffle 13. The plurality of feed ports 15 are equally spaced along the circumferential direction of the roughening outer cylinder 2. The plasma spray gun extracts the ultrafine salt powder in the sealed container through the negative pressure generated by the high-speed plasma gas flow and makes the ultrafine salt powder carry high-voltage charges, and then sprays it into the roughening cavity from the first charged ultrafine salt powder feed port group 11 and the second charged ultrafine salt powder feed port group 12. The charged ultrafine salt powder is sprayed along the inner wall of the outer cylinder insulating baffle 13 and is sprayed and diffused evenly in a spiral shape in the roughening cavity. The spiral spraying can ensure that the charged ultrafine salt powder can be more evenly diffused and distributed. Then, the outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8 are energized to form a strong electric field. The charged ultrafine salt powder is accelerated in the strong electric field and then bombards the surface of the automotive interior plastic part to bombard fine holes on its surface. Then, the energizing directions of the outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8 are opposite. The charged ultrafine salt powder is accelerated along the opposite direction to the previous one and then bombards the surface of the other side of the automotive interior plastic part. After the outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8 complete one electrode reversal, the lower electrode plate group 9 and the upper electrode plate group 10 start to work, and generate two electric fields with opposite directions similar to the outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8, so that the charged ultrafine salt powder bombards the upper side and the lower side of the automotive interior plastic part, completing a complete bombardment cycle. Then, the outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8 continue to be energized to work. Through such cyclic bombardments in different directions, the holes on the surface of the plastic part are continuously increased until the roughening requirement is completed. After the roughening is completed, part of the ultrafine salt powder will be embedded in the microporous structure on the surface of the automotive interior plastic part. Therefore, the ultrafine salt powder usually uses inorganic salts that are easily soluble in water and is ground to the required particle size to obtain ultrafine salt powder that meets the process requirements. After the roughening process, the automotive interior plastic part is placed in a water washing tank and cooperates with an ultrasonic cleaning device to dissolve and clean the ultrafine salt powder embedded in the microporous structure on the surface of the automotive interior plastic part, leaving only the microporous structure on the surface of the automotive interior plastic part, realizing the physical roughening of the surface of the automotive interior plastic part. By using the roughening treatment device of the present invention, there is no need to configure roughening agents, and pollution-free inorganic salts such as sodium chloride can be used, which will not cause environmental pollution problems. Moreover, the dissolved inorganic salts can still be filtered, distilled, recycled, and reground for recycling, greatly reducing the amount of inorganic salts used. Compared with the continuous consumption of the roughening agents in the traditional agent roughening, the process cost of the present invention is greatly reduced.

[0027] The outer cylinder electrode plate group 7 and the inner cylinder electrode plate group 8 include several circles of electrode plate circles. Each circle of electrode plate circles includes several rectangular electrode plates. The several rectangular electrode plates are evenly distributed along the circumference of the roughened outer cylinder 2 or the roughened inner cylinder 3. The several circles of electrode plate circles are distributed along the vertical direction of the roughened outer cylinder 2 or the roughened inner cylinder 3, and the rectangular electrode plates between two adjacent circles of electrode plate circles are staggered in the circumferential direction of the roughened outer cylinder 2 or the roughened inner cylinder 3. By adopting these staggered array distribution methods, the electrode plates are distributed in a scattered and uniform manner, ensuring the uniformity of the bombardment of the charged ultrafine salt powder on the surface of the plastic part. And because the electrode plates of the relatively arranged positive and negative electrodes are staggered, that is, actually two electrode plates with opposite polarities biased on both sides of an electrode plate are arranged opposite to one electrode plate, and these two electrode plates are symmetrically distributed on both sides of this electrode plate. In this way, an electric field biased to both sides will be formed, so that the ultrafine salt powder will form two deflection angles in two directions when bombarding the surface of the automotive interior plastic part. Then the adjacent deflected powders will bombard the surface of the automotive interior plastic part in a staggered manner, forming micro-holes with small-angle staggering, further improving the roughening effect.

[0028] As Figure 3 shown, the plastic part fixture 5 includes a fixture body 16, a vertical beam 17, a horizontal beam 18 and a main beam 19. The fixture body 16 is horizontally fixed at the lower end of the vertical beam 17. The upper end of the vertical beam 17 is fixed at one end of the horizontal beam 18. The horizontal beam 18 is arranged along the radial direction of the roughened outer cylinder 2, and the other end of the horizontal beam 18 is fixed on the side surface of the lower end of the main beam 19. Several horizontal beams 18 are evenly distributed along the circumferential direction of the main beam 19. Several pins 20 are arranged on the side surface of the fixture body 16, and a plastic part clamping mechanism is arranged on one of the pins 20. When in use, the automotive interior plastic part inserts its screw holes onto the pins 20, and then the plastic part clamping mechanism clamps and fixes the automotive interior plastic part. The fixture lifting drive mechanism 6 drives the entire plastic part fixture 5 to move up and down, so as to complete the feeding and discharging of the automotive interior plastic part in the roughening cavity. The plastic part fixture 5 is generally arranged in an L shape towards the outside, mainly forming a fit with the inner and outer cylinder structures. Of course, the larger the diameters of the inner and outer cylinders are, the more automotive interior plastic parts can be accommodated at one time.

[0029] The fixture lifting drive mechanism 6 includes a lifting bracket 21, a first sliding rod 22, a second sliding rod 23, a lifting drive cylinder 24, an upper cross beam 25 and two side brackets 26. The upper end of the main beam 19 is fixed on the lifting bracket 21. The upper side of the lifting bracket 21 is connected to the lifting drive cylinder 24 and is driven by the lifting drive cylinder 24 to lift in the vertical direction. The lifting drive cylinder 24 is vertically fixed on the upper side of the upper cross beam 25. The lower ends of the first sliding rod 22 and the second sliding rod 23 are fixed on the lifting bracket 21 and are symmetrically distributed on both sides of the lifting drive cylinder 24. The upper ends of the first sliding rod 22 and the second sliding rod 23 are slidably arranged on the upper cross beam 25 in the vertical direction. The two ends of the upper cross beam 25 are fixed on the base 1 through the two side brackets 26. The lifting drive cylinder 24 drives the lifting bracket 21 to lift and lower in the vertical direction along the first sliding rod 22 and the second sliding rod 23, thereby driving the plastic part fixture 5 to lift and lower to realize the feeding and discharging of the automotive interior plastic parts in the roughening cavity.

[0030] Such as Figure 1 , 3As shown in Figure 4, the cover plate assembly 4 includes a cover plate 27, a radial groove cover plate 28, a radial connecting rod 29, a ring gear 30, a driving gear 31, a gear bracket 32, a gear motor 33, a working hole cover plate 34, a working hole vertical frame 35 and a working hole horizontal frame 36. The cover plate 27 is provided with a plurality of radial grooves 37 matching the horizontal beam 18, and the cover plate 27 is also provided with a plurality of working holes 38 for plastic parts to pass through, and one end of the radial groove 37 is connected to the working hole 38. The shape of the radial groove cover plate 28 matches the radial groove 37 and the radial groove cover plate 28 is arranged along the radial direction of the cover plate 27. One end of the radial connecting rod 29 is connected to one end of the radial groove cover plate 28, and the other end of the radial connecting rod 29 is fixed to the inner side of the ring gear 30. The driving gear 31 is rotatably arranged on the gear bracket 32 ​​and meshes with the gear ring 30. The driving gear 31 is driven to rotate by the gear motor 33. The working hole cover plate 34 matches the working hole 38 and corresponds one to one. A groove matching the radial connecting rod 29 is opened on the lower side of the working hole cover plate 34. The lower end of the working hole vertical frame 35 is fixedly connected to the working hole cover plate 34. The upper end of the working hole vertical frame 35 is fixedly connected to one end of the working hole horizontal frame 36. The other end of the working hole horizontal frame 36 is fixed to the outside of the lifting bracket 21 and a plurality of working hole horizontal frames 36 are equidistantly distributed along the circumferential direction of the lifting bracket 21. When the automobile interior plastic parts are being fed, in the initial state, the radial groove cover plate 28 is staggered with the radial groove 37, and the automobile interior plastic parts are driven downward into the roughening cavity by the fixture lifting drive mechanism 6. When the height of the horizontal beam 18 is lower than the height of the cover assembly 4 and the working hole cover plate 34 is still higher than the height of the cover assembly 4, the gear motor 33 drives the driving gear 31 to rotate, thereby driving the ring gear 30 to rotate, and the radial groove cover plate 28 is driven by the ring gear 30 to cover the upper side of the radial groove 37, and then the automobile interior plastic parts continue to move downward under the drive of the fixture lifting drive mechanism 6 until the working hole cover plate 34 completely covers the working hole 38 to complete the sealing of the upper end of the roughening cavity. Through this ingenious control and coordination method, the problems of feeding the complex structure of the plastic parts fixture 5 and closing the cavity are solved.

[0031] like Figure 5 and Figure 6As shown in the figure, the plastic part clamping mechanism includes a first wedge-shaped clamping block 39, a second wedge-shaped clamping block 40, an arrow-shaped slider 41, a first tension spring 42, a second tension spring 43, a horizontal screw 44, a nut 45 and a nut driving mechanism. A radial sliding groove matching the first wedge-shaped clamping block 39 and the second wedge-shaped clamping block 40 is formed on the pin shaft 20. The first wedge-shaped clamping block 39 and the second wedge-shaped clamping block 40 are respectively slidably arranged at both ends of the radial sliding groove. The first tension spring 42 and the second tension spring 43 are slidably arranged in the radial sliding groove along the radial direction of the pin shaft 20. One end of the first tension spring 42 is connected to the first wedge-shaped clamping block 39, and the other end of the first tension spring 42 is fixed inside the pin shaft 20. One end of the second tension spring 43 is connected to the second wedge-shaped clamping block 40, and the other end of the second tension spring 43 is fixed inside the pin shaft 20. An axial sliding groove 46 matching the arrow-shaped slider 41 is axially formed inside the pin shaft 20. The arrow-shaped slider 41 is slidably arranged in the axial sliding groove 46. One end of the arrow-shaped slider 41 is arrow-shaped, and the other end of the arrow-shaped slider 41 is fixedly connected to one end of the horizontal screw 44. The inner sides of the sides of the first wedge-shaped clamping block 39 and the second wedge-shaped clamping block 40 opposite to the arrow-shaped end of the arrow clamping block 41 are provided with inclined surfaces matching the arrow-shaped end of the arrow clamping block 41. The other end of the horizontal screw 44 is slidably arranged in the screw hole 47. The nut 45 is sleeved outside the horizontal screw 44 and is threadedly connected to the horizontal screw 44. The nut 45 is driven to rotate by the nut driving mechanism. In the initial state, the arrow-shaped slider 41 is located at the left end of the axial sliding groove 46. At this time, the first wedge-shaped clamping block 39 and the second wedge-shaped clamping block 40 are retracted inside the pin shaft 20 under the action of the first tension spring 42 and the second tension spring 43. The screw hole of the automotive interior plastic part can be directly inserted onto the pin shaft 20. After insertion, the nut driving mechanism drives the nut 45 to rotate, thereby driving the horizontal screw 44 to move to the right. The arrow-shaped slider 41 is driven by the horizontal screw 44 to slide to the right along the axial sliding groove 46. The arrow-shaped end of the arrow-shaped slider 41 pushes the first wedge-shaped clamping block 39 and the second wedge-shaped clamping block 40 along the inclined surfaces of the first wedge-shaped clamping block 39 and the second wedge-shaped clamping block 40 to the two sides of the pin shaft 20 along the radial sliding groove, so as to lock and position the automotive interior plastic part and prevent it from falling off. When disassembling, the nut driving mechanism drives the nut 45 in the reverse direction, the arrow-shaped slider 41 moves to the left, and the first wedge-shaped clamping block 39 and the second wedge-shaped clamping block 40 are retracted inside the pin shaft 20 under the action of the first tension spring 42 and the second tension spring 43, and the automotive interior plastic part can be directly removed. The plastic part clamping mechanism can synchronously control the expansion and contraction and opening and closing of the two wedge-shaped clamping blocks of multiple pin shafts 20, and the control structure is simple and the cost is relatively low.

[0032] The nut driving mechanism includes a first pulley 48, a synchronous belt 49, a second pulley 50, a transmission shaft 51, a first bevel gear 52, a second bevel gear 53, a speed reducer 54 and a bevel gear driving motor 55. The first pulley 48 is sleeved outside the nut 45 and fixedly connected to the nut 45. The transmission shaft 51 is rotatably arranged in the horizontal beam 18 along the length direction of the horizontal beam 18. The second pulley 50 is fixed at one end of the transmission shaft 51. The synchronous belt 49 is arranged on the first pulley 48 and the second pulley 50. The first bevel gear 52 is fixed at the other end of the transmission shaft 51. The second bevel gear 53 is fixed on the output shaft of the speed reducer 54 and the second bevel gear 53 meshes with the first bevel gear 52. The input shaft of the speed reducer 54 is connected to the bevel gear driving motor 55 and is driven to rotate by the bevel gear driving motor 55. After being decelerated by the speed reducer 54, the bevel gear driving motor 55 drives the second bevel gear 53 to rotate. The second bevel gear 53 drives the first bevel gear 52 to rotate, thereby driving the transmission shaft 51 to rotate. The other end of the transmission shaft 51 drives the nut 45 in the first pulley 48 to rotate through the second pulley 50 and the synchronous belt 49, so as to drive the nut 45.

[0033] The present invention provides an environment-friendly surface roughening treatment device for automotive interior plastic parts. Charged ultrafine salt powder is sprayed into the roughening cavity, and then the charged ultrafine salt powder is directionally accelerated by an alternating electric field to bombard the surface of the plastic part at high speed, thereby physically roughening the surface of the plastic part. After completion, only the plastic part needs to be washed with water to dissolve the surface salt powder, which is non-toxic and harmless, meets the environmental protection requirements, and the overall process operation is simple and the cost is low. The present invention designs a plastic part fixture and a cover plate assembly structure with a unique structure, realizes the sealing of the plastic part feeding port, and the plastic part clamping operation is convenient and the work efficiency is high.

[0034] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiments within the spirit and principle of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An environmentally friendly surface roughening treatment device for automobile interior plastic parts, characterized in that: The invention comprises a base, a roughening outer cylinder, a roughening inner cylinder, a cover plate assembly, a plastic fixture and a fixture lifting and driving mechanism. The roughening outer cylinder is sleeved on the outer side of the roughening inner cylinder and the lower ends of the roughening outer cylinder and the roughening inner cylinder are fixed on the base. An outer cylinder electrode plate group is arranged on the inner wall of the roughening outer cylinder, and an inner cylinder electrode plate group is arranged on the outer wall of the roughening inner cylinder. The outer cylinder electrode plate group and the inner cylinder electrode plate group are arranged oppositely and have opposite polarities. The gap between the roughening outer cylinder and the roughening inner cylinder is a roughening cavity. A lower end electrode plate group is arranged in the base at the lower end of the roughening cavity. The cover plate assembly is arranged on the roughening outer cylinder. An upper electrode plate group is arranged at the upper end and the lower side of the cover plate assembly, the lower electrode plate group is arranged opposite to the upper electrode plate group and has opposite polarity, the polarity of the outer tube electrode plate group and the inner tube electrode plate group is periodically alternating, the polarity of the lower electrode plate group and the upper electrode plate group is periodically alternating, the plastic part fixture is arranged on the fixture lifting drive mechanism and is driven by the fixture lifting drive mechanism to lift and lower in the vertical direction, a first charged ultrafine salt powder feed port group is arranged on the upper side of the coarsening outer tube, and a second charged ultrafine salt powder feed port group is arranged on the lower side of the coarsening outer tube.

2. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 1 is characterized in that: The roughening outer cylinder is coaxially arranged with the roughening inner cylinder, the top of the roughening inner cylinder is closed, and the height of the roughening outer cylinder is higher than that of the roughening inner cylinder.

3. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 2 is characterized in that: An outer cylinder insulating baffle is arranged inside the outer cylinder electrode plate group, and an inner cylinder insulating baffle is arranged outside the inner cylinder electrode plate group.

4. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 2 is characterized in that: The first charged ultrafine salt powder feed port group and the second charged ultrafine salt powder feed port group respectively include a plurality of feed ports, each of which is arranged along the tangent direction of the roughening outer cylinder, one end of the feed port passes through the inner wall of the roughening outer cylinder and is fixed on the insulating baffle of the outer cylinder and is connected with the inner cavity of the insulating baffle of the outer cylinder, and the plurality of feed ports are evenly spaced along the circumferential direction of the roughening outer cylinder. The plasma spray gun extracts the ultrafine salt powder in the sealed container through the negative pressure generated by the high-speed plasma airflow, and makes the ultrafine salt powder carry a high-voltage charge, and then sprays it into the roughening cavity from the first charged ultrafine salt powder feed port group and the second charged ultrafine salt powder feed port group.

5. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 2 is characterized in that: The outer cylinder electrode plate group and the inner cylinder electrode plate group include several circles of electrode plates, each circle of electrode plates includes several rectangular electrode plates, the several rectangular electrode plates are evenly distributed along the circumferential direction of the roughened outer cylinder or the roughened inner cylinder, the several circles of electrode plates are distributed along the vertical direction of the roughened outer cylinder or the roughened inner cylinder, and the rectangular electrode plates between two adjacent circles of electrode plates are staggered in the circumferential direction of the roughened outer cylinder or the roughened inner cylinder.

6. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 1 is characterized in that: The plastic parts fixture comprises a fixture body, a vertical beam, a horizontal beam and a main beam. The fixture body is horizontally fixed to the lower end of the vertical beam, the upper end of the vertical beam is fixed to one end of the horizontal beam, the horizontal beam is arranged along the radial direction of the roughened outer cylinder and the other end of the horizontal beam is fixed to the side surface of the lower end of the main beam. Several horizontal beams are distributed at equal intervals along the circumferential direction of the main beam. Several pin shafts are arranged on the side of the fixture body, and a plastic parts clamping mechanism is arranged on one of the pin shafts.

7. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 6 is characterized in that: The clamp lifting drive mechanism includes a lifting bracket, a first sliding rod, a second sliding rod, a lifting drive cylinder, an upper cross beam and two side brackets. The upper end of the main beam is fixed on the lifting bracket, the upper side of the lifting bracket is connected to the lifting drive cylinder and is driven by the lifting drive cylinder to lift and lower in the vertical direction. The lifting drive cylinder is vertically fixed on the upper side of the upper cross beam, the lower ends of the first sliding rod and the second sliding rod are fixed on the lifting bracket, the upper ends of the first sliding rod and the second sliding rod are slidably set on the upper cross beam in the vertical direction, and the two ends of the upper cross beam are fixed to the base through the two side brackets.

8. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 6, characterized in that: The cover plate assembly includes a cover plate, a radial groove cover plate, a radial connecting rod, a gear ring, a driving gear, a gear bracket, a gear motor, a working hole cover plate, a working hole vertical frame and a working hole horizontal frame. The cover plate is provided with a plurality of radial grooves matching the horizontal beam, and the cover plate is also provided with a plurality of working holes for plastic parts to pass through, and one end of the radial groove is connected to the working hole. The shape of the radial groove cover plate matches the radial groove and the radial groove cover plate is arranged along the radial direction of the cover plate, one end of the radial connecting rod is connected to one end of the radial groove cover plate, and the other end of the radial connecting rod is fixed to the gear ring, and a plurality of radial groove cover plates and radial connecting rods are distributed at equal intervals along the circumferential direction of the cover plate, the driving gear is rotatably arranged on the gear bracket and meshes with the gear ring, the driving gear is driven to rotate by the gear motor, the working hole cover plate matches the working hole and corresponds one to one, the lower end of the working hole vertical frame is fixedly connected to the working hole cover plate, the upper end of the working hole vertical frame is fixedly connected to one end of the working hole horizontal frame, the other end of the working hole horizontal frame is fixed to the outside of the lifting bracket and a plurality of working hole horizontal frames are distributed at equal intervals along the circumferential direction of the lifting bracket.

9. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 6, characterized in that: The plastic part clamping mechanism comprises a first wedge-shaped clamping block, a second wedge-shaped clamping block, an arrow slider, a first tension spring, a second tension spring, a horizontal screw, a nut and a nut driving mechanism. A radial sliding groove matching the first wedge-shaped clamping block and the second wedge-shaped clamping block is opened on the pin shaft. The first wedge-shaped clamping block and the second wedge-shaped clamping block are respectively slidably arranged at the two ends of the radial sliding groove. The first tension spring and the second tension spring are arranged in the radial sliding groove along the radial direction of the pin shaft. One end of the first tension spring is connected to the first wedge-shaped clamping block, and the other end of the first tension spring is fixed in the pin shaft. One end of the second tension spring is connected to the second wedge-shaped clamping block. The other end of the second tension spring is fixed in the pin shaft, and an axial sliding groove matching the arrow slider is axially opened in the pin shaft, the arrow slider is slidably set in the axial sliding groove, one end of the arrow slider is arrow-shaped, and the other end of the arrow slider is fixedly connected to one end of the horizontal screw rod, and the first wedge-shaped clamping block and the second wedge-shaped clamping block have an inclined surface matching the arrow-shaped end of the arrow clamping block on the inner side of the side surface opposite to the arrow-shaped end of the arrow clamping block, the other end of the horizontal screw rod is slidably set in the screw rod hole, the nut is sleeved on the outer side of the horizontal screw rod and is threadedly connected to the horizontal screw rod, and the nut is driven to rotate by the nut driving mechanism.

10. The environmentally friendly surface roughening treatment device for automobile interior plastic parts according to claim 9, characterized in that: The nut driving mechanism includes a first pulley, a synchronous belt, a second pulley, a transmission shaft, a first bevel gear, a second bevel gear, a reducer and a bevel gear driving motor. The first pulley is sleeved on the outside of the nut and is fixedly connected to the nut. The transmission shaft is rotatably arranged in the horizontal beam along the length direction of the horizontal beam. The second pulley is fixed at one end of the transmission shaft. The synchronous belt is arranged on the first pulley and the second pulley. The first bevel gear is fixed at the other end of the transmission shaft. The second bevel gear is fixed on the output shaft of the reducer and the second bevel gear is meshed with the first bevel gear. The input shaft of the reducer is connected to the bevel gear driving motor and is driven to rotate by the bevel gear driving motor.

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