Multi-workpiece rotating platform for spraying

Abstract

The utility model discloses a multi-workpiece rotating platform for spraying, which comprises a rack and a working table plate fixed on the rack, the working table plate is symmetrically provided with at least two rotating stations, each rotating station is provided with a rotating mechanism, each rotating mechanism comprises a shaft seat and a rotating shaft, the shaft seat is fixedly connected with the working table plate, and the rotating shaft is fixedly connected with the working table plate. The shaft seat is provided with a shaft hole used for being rotationally connected with a rotating shaft, the rotating shaft is connected with the shaft hole through a bearing, a chuck assembly used for clamping a workpiece is arranged on the upper portion of the rotating shaft, a driving mechanism is arranged below the working table and connected with the lower portion of the rotating shaft at each rotating station, and the rotating shafts rotate at the same speed in the same direction. The spraying device is provided with a plurality of rotating stations, a plurality of workpieces can be clamped at the same time at a time to be sprayed in a constant-speed rotating mode, so that the spraying quality has high uniformity, the uniformity of the spraying quality of each workpiece is ensured, and the spraying device has high spraying efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying clamping equipment, in particular to a multi-workpiece rotating platform for spraying. Background Art

[0002] The spraying operation of workpieces is usually carried out in a closed space. After the operator loads the workpieces in the spraying room and leaves the spraying room, the spraying work starts. At present, the double-station single-spray gun alternating spraying method is mostly adopted. The operator clamps two workpieces each time, and the single-spray gun alternately sprays the workpieces. After completion, the operator enters the spraying room to take out the workpieces. In this conventional method, the spraying efficiency is not high, and since the workpieces are sprayed sequentially, there will be a situation where the spraying is uneven due to different rotation speeds of the front and rear rotating workpieces. Content of the Utility Model

[0003] The purpose of the utility model is to provide a multi-workpiece rotating platform for spraying, which can spray multiple workpieces simultaneously at one time, and each workpiece rotates at a constant speed, with high spraying quality, and well solves the problems mentioned in the above background art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A multi-workpiece rotating platform for spraying, comprising a frame and a workbench board fixed on the frame. The workbench board is symmetrically provided with at least two rotating stations, and each rotating station is provided with a rotating mechanism. The rotating mechanism includes a shaft seat and a rotating shaft. The shaft seat is fixedly connected with the workbench board. The shaft seat has a shaft hole for rotatably connecting the rotating shaft. The rotating shaft is connected with the shaft hole through a bearing. The upper part of the rotating shaft is provided with a chuck assembly for clamping the workpiece. A driving mechanism is arranged below the workbench board. The driving mechanism is respectively connected with the lower parts of the rotating shafts at each rotating station, and each rotating shaft rotates at a constant speed in the same direction.

[0006] Further, the driving mechanism includes a driving motor, several synchronous wheels and several conveyor belts. A synchronous wheel is arranged at the lower part of the rotating shafts at the two outermost rotating stations, and two synchronous wheels are arranged at the lower parts of the rotating shafts at the remaining rotating stations. The synchronous wheels on the rotating shafts at two adjacent rotating stations on the same side are connected by a conveyor belt. The output shaft of the driving motor is connected with two driving wheels, and the two driving wheels are respectively connected with the synchronous wheels on the rotating shafts at the two middle rotating stations through conveyor belts. In this way, one driving motor can drive multiple rotating shafts to rotate simultaneously, and a cascading mode is adopted between each station, so as to realize the constant-speed rotation of multiple workpieces and ensure the consistency of spraying quality.

[0007] Furthermore, there are six rotating stations, which are arranged at equal intervals along a straight line.

[0008] Furthermore, a roller device for adjusting the tightness of the conveyor belt is correspondingly provided below the workbench plate.

[0009] Furthermore, the roller device includes a fixing plate, a mounting shaft and a roller. The fixing plate is connected to the workbench plate. One end of the mounting shaft is connected to the fixing plate, and the other end of the mounting shaft is rotatably connected to the roller.

[0010] Furthermore, a sealing structure for sealing between the shaft seat and the rotating shaft is provided on the top surface of the shaft seat. The sealing structure includes a sealing ring provided between the shaft seat and the rotating shaft and an annular pressing plate located above the sealing ring. The annular pressing plate is connected to the top surface of the shaft seat. By providing the sealing structure, the rotating shaft can be protected and spraying dust can be prevented from entering the rotating mechanism to damage the bearing.

[0011] Furthermore, a gantry is provided above the frame. The gantry is provided with a guide rod directly above the corresponding chuck assembly and a locking device for locking the guide rod. The guide rod is coaxially distributed with the workpiece. A revolving center for abutting against the workpiece is rotatably connected to the bottom of the guide rod. By using the revolving center to abut and fix the workpiece, the workpiece swing can be effectively prevented, so that the large swing amplitude of the upper part of the workpiece during rotation can be avoided. By adjusting the position of the guide rod up and down, workpieces of different heights can be fixed and the position of the guide rod can be maintained by using the locking device.

[0012] Furthermore, the locking device includes a fixing seat, a spring chuck and a cap sleeved on the guide rod in sequence. Through holes for the guide rod to pass through are provided in the middle of the fixing seat, the spring chuck and the cap. The bottom of the fixing seat is fixedly connected to the gantry. The inner wall of the lower part of the cap is threadedly connected to the outer wall of the upper part of the fixing seat. An annular baffle for locking and pressing the upper part of the spring chuck is provided on the upper part of the cap. A conical surface is provided between the outer wall of the lower part of the spring chuck and the inner wall of the upper part of the fixing seat. Under the pressing force of the cap, the guide rod can be well clamped and locked through the cooperation of the spring chuck and the fixing seat, and the perpendicularity of the guide rod is ensured.

[0013] Furthermore, a buffer protection mechanism is provided on the upper part of the guide rod. The buffer protection mechanism includes a spring sleeved on the guide rod and a limit ring fixed to the top of the guide rod. The spring is located between the cap and the limit ring. By using the spring as a buffer, it is prevented that the guide rod slips due to human misoperation, resulting in injury to people or damage to the workpiece.

[0014] Further, a sleeve structure for installing the revolving center is provided at the bottom of the guide rod. The sleeve structure includes an inner cylinder and an outer sleeve connected by insertion. The upper part of the outer sleeve is fixedly connected to the bottom of the guide rod, and the lower part of the outer sleeve is fixedly connected to the outer wall of the inner cylinder. The lower part of the inner cylinder has a receiving cavity for inserting the revolving center, and a bearing is provided between the upper part of the revolving center and the inner cylinder.

[0015] Compared with the prior art, the present utility model provides a multi-workpiece rotating platform for spraying, which has the following beneficial effects:

[0016] The present utility model has multiple rotating stations, and can hold multiple workpieces at the same time and spray them in a way of rotating at a constant speed. In this way, the quality of the sprayed coating has high uniformity, ensuring the consistency of the spraying quality of each workpiece, and having high spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a front view of the present utility model;

[0020] Figure 3 is Figure 2 a sectional view along the A-A direction in

[0021] Figure 4 is Figure 3 an enlarged schematic diagram at B in

[0022] Figure 5 is Figure 3 an enlarged schematic diagram at C in

[0023] Figure 6 is Figure 3 an enlarged schematic diagram at D in

[0024] Figure 7 is an assembly schematic diagram of the revolving center and the guide rod installed on the gantry;

[0025] Figure 8 is an adjustment schematic diagram of the guide rod;

[0026] Figure 9This is a three-dimensional structural schematic diagram of the present utility model after removing part of the frame door panel;

[0027] Figure 10 This is a connection schematic diagram of the driving mechanism with each rotating mechanism and the chuck assembly.

[0028] Reference numerals: 1, frame; 11, workbench plate; 12, gantry; 13, guide rod; 14, revolving center; 15, sleeve structure; 151, inner cylinder; 152, outer sleeve; 2, rotating mechanism; 21, shaft seat; 22, rotating shaft; 3, chuck assembly; 4, driving mechanism; 41, driving motor; 42, synchronous pulley; 43, conveyor belt; 44, driving wheel; 5, roller device; 51, fixing plate; 52, mounting shaft; 53, roller; 6, sealing structure; 61, sealing ring; 62, annular pressing plate; 7, locking device; 71, fixed seat; 72, spring collet; 73, nut; 731, annular baffle; 8, buffer protection mechanism; 81, spring; 82, limit ring; 9, bearing; 10, workpiece. Specific embodiments

[0029] Next, the technical solutions of the present utility model will be clearly and completely described through detailed embodiments in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figures 1 to 10 , this embodiment provides a multi-workpiece rotating platform for spraying, including a frame 1 and a workbench plate 11 fixed on the frame 1. The workbench plate 11 is symmetrically provided with at least two rotating stations, and each rotating station is provided with a rotating mechanism 2. The rotating mechanism 2 includes a shaft seat 21 and a rotating shaft 22. The shaft seat 21 is fixedly connected to the workbench plate 11 by bolts. The shaft seat 21 has a shaft hole for rotatably connecting the rotating shaft 22. The rotating shaft 22 is connected to the shaft hole through a bearing 9. The upper part of the rotating shaft 22 is provided with a chuck assembly 3 for clamping the workpiece 10. A driving mechanism 4 is provided below the workbench plate 11. The driving mechanism 4 is respectively connected to the lower part of the rotating shaft 22 at each rotating station, and each rotating shaft 22 rotates at the same speed and in the same direction. By providing multiple rotating stations, multiple workpieces can be clamped at the same time and sprayed in a manner of rotating at a constant speed. In this way, the quality of the spraying is highly uniform, ensuring the consistency of the spraying quality of each workpiece and having a high spraying efficiency.

[0031] In some specific embodiments, refer to Figure 6 , Figure 9 andFigure 10 The driving mechanism 4 includes a driving motor 41, a plurality of synchronous pulleys 42 and a plurality of conveyor belts 43. A synchronous pulley is provided at the lower part of the rotating shafts at the two outermost rotating stations, and two synchronous pulleys are provided at the lower part of the rotating shafts at the remaining rotating stations. The synchronous pulleys on the rotating shafts at two adjacent rotating stations on the same side are connected by a conveyor belt. The output shaft of the driving motor 41 is connected with two driving pulleys 44, and the two driving pulleys are respectively connected with the synchronous pulleys on the rotating shafts at the two middle rotating stations through conveyor belts. In this way, one driving motor can drive multiple rotating shafts to rotate simultaneously, and a cascading mode is adopted between each station, so as to realize the isochronous rotation of multiple workpieces and ensure the consistency of spraying quality.

[0032] Specifically, in this embodiment, there are six rotating stations, and the six rotating stations are arranged at equal intervals along a straight line.

[0033] The driving motor 41 is preferably a variable-frequency speed-regulating motor, which can adapt to the spraying requirements of different workpieces.

[0034] The chuck assembly 3 is a conventional three-jaw chuck clamping structure. The small bevel gear can be rotated by using an external hexagonal tool, so as to drive the disc to rotate, and then drive the three jaws to tighten and loosen simultaneously.

[0035] As an improved implementation manner, referring to Figure 9 and Figure 10 , a roller device 5 for adjusting the tightness of the conveyor belt 43 is correspondingly provided below the workbench plate 11. Specifically, the roller device 5 includes a fixing plate 51, a mounting shaft 52 and a roller 53. The fixing plate 51 is connected to the workbench plate 11 by bolts. One end of the mounting shaft 52 is slidably connected to the fixing plate 51, and the other end of the mounting shaft 52 is rotatably connected to the roller 53 through a bearing. By changing the position of the roller to change the extrusion force of the roller on the conveyor belt, the tightness of the conveyor belt can be adjusted.

[0036] In some specific implementation manners, as shown in Figure 6 , a sealing structure for sealing between the shaft seat and the rotating shaft is provided on the top surface of the shaft seat. The sealing structure includes a sealing ring provided between the shaft seat and the rotating shaft and an annular pressing plate located above the sealing ring. The annular pressing plate is connected to the top surface of the shaft seat. By providing the sealing structure, the rotating shaft can be protected and spraying dust can be prevented from entering the rotating mechanism to damage the bearing.

[0037] In this embodiment, referring to Figures 1 to 10, a gantry 12 is provided above the frame 1. The gantry 12 is provided with a guide rod 13 directly above the corresponding chuck assembly 3 and a locking device 7 for locking the guide rod 13. The guide rod 13 is coaxially distributed with the workpiece 10. A revolving center 14 for abutting against the workpiece 10 is rotatably connected to the bottom of the guide rod 13. By using the revolving center to abut and fix the workpiece, the workpiece swing is effectively prevented, so that the large swing amplitude of the upper part of the workpiece during rotation can be avoided. By adjusting the position of the guide rod up and down, workpieces of different heights can be fixed, and the position of the guide rod can be maintained by using the locking device.

[0038] In some specific embodiments, refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 , the locking device 7 includes a fixed seat 71, a collet 72 and a cap 73 that are sequentially sleeved on the guide rod 13. The fixed seat 71, the collet 72 and the cap 73 all have through holes for the guide rod 13 to pass through in the middle. The bottom of the fixed seat 71 is fixedly connected to the gantry 12 by bolts. The lower inner wall of the cap 73 is threadedly connected to the upper outer wall of the fixed seat 71. The upper part of the cap 73 is provided with an annular baffle 731 for locking and pressing the upper part of the collet 72. The lower outer wall of the collet 72 and the upper inner wall of the fixed seat 71 are provided with tapered surfaces. Under the downward pressing force of the cap, through the tapered surface cooperation between the collet and the fixed seat, the collet can contract to well clamp and lock the guide rod, and ensure the verticality of the guide rod.

[0039] As an improved embodiment, refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 , a buffer protection mechanism 8 is provided on the upper part of the guide rod 13. The buffer protection mechanism 8 includes a spring 81 sleeved on the guide rod 13 and a limit ring 82 fixed to the top of the guide rod 13. The spring 81 is located between the cap 73 and the limit ring 82. The spring is a compression spring, which is used to overcome the impact force generated when the guide rod and the revolving center slide due to their own weights, and acts as a human and machine protection device. By using the spring as a buffer, it is prevented that the guide rod slides down due to human misoperation or insufficient locking force, resulting in injury to people or damage to the workpiece.

[0040] In some specific embodiments, refer to Figure 3 , Figure 5 , Figure 7 and Figure 8, a sleeve structure 15 for mounting the revolving center 14 is provided at the bottom of the guide rod 13. The sleeve structure 15 includes an inner cylinder 151 and an outer sleeve 152 which are connected by insertion. The upper part of the outer sleeve 152 is fixedly connected to the bottom of the guide rod 13 by screws, and the lower part of the outer sleeve 152 is fixedly connected to the outer wall of the inner cylinder 151 by screws. The lower part of the inner cylinder 151 has a receiving cavity for inserting the revolving center 14, and a bearing 9 is provided between the upper part of the revolving center 14 and the inner cylinder 151.

[0041] During use, referring to Figure 2 and Figure 8 , first loosen the screw cap 73, hold the upper part of the guide rod 13 and lift it upward to an appropriate height, and then tighten the screw cap 73 again to lock the guide rod 13; subsequently, use the chuck assembly 3 to clamp and fix the lower part of the workpiece 10; after that, hold the upper part of the guide rod 13 and loosen the screw cap 73, and slightly push the guide rod 13 downward until the revolving center 14 abuts against the upper part of the workpiece 10, and then tighten the screw cap 73 again to lock the guide rod 13, so as to clamp each workpiece. Power on and start the device, and the drive motor 41 drives each workpiece to rotate at a constant speed simultaneously in a cascaded mode, so as to facilitate the spraying of the workpiece by the spray gun arranged beside the corresponding rotating station.

[0042] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

[0043] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-workpiece rotating platform for spraying, comprising a frame and a worktable fixed on the frame, characterized in that: The worktable is symmetrically provided with at least two rotating stations, each rotating station is provided with a rotating mechanism, the rotating mechanism includes an axle seat and a rotating shaft, the axle seat is fixedly connected to the worktable, the axle seat has an axle hole for rotatably connecting the rotating shaft, the rotating shaft is connected to the axle hole through a bearing, a chuck assembly for clamping a workpiece is provided on the upper part of the rotating shaft, a driving mechanism is provided under the worktable, the driving mechanism is respectively connected to the lower part of the rotating shaft at each rotating station, and each rotating shaft rotates at the same speed and in the same direction.

2. The multi-workpiece rotating platform for spraying according to claim 1, characterized in that: The driving mechanism includes a driving motor, a plurality of synchronous wheels and a plurality of conveyor belts. A synchronous wheel is arranged at the lower part of the rotating shaft at the two outermost rotating stations, and two synchronous wheels are arranged at the lower part of the rotating shaft at the remaining rotating stations. The synchronous wheels on the rotating shafts at two adjacent rotating stations on the same side are connected through a conveyor belt. The output shaft of the driving motor is connected to two driving wheels, and the two driving wheels are respectively connected to the synchronous wheels on the rotating shafts at the two middle rotating stations through conveyor belts.

3. The multi-workpiece rotating platform for spraying according to claim 2, characterized in that: There are six rotating workstations, and the six rotating workstations are evenly spaced and distributed along a straight line.

4. The multi-workpiece rotating platform for spraying according to claim 2, characterized in that: A roller device for adjusting the tightness of the conveyor belt is correspondingly provided below the work table.

5. The multi-workpiece rotating platform for spraying according to claim 4, characterized in that: The roller device comprises a fixing plate, a mounting shaft and a roller, wherein the fixing plate is connected to the workbench, one end of the mounting shaft is connected to the fixing plate, and the other end of the mounting shaft is rotatably connected to the roller.

6. The multi-workpiece rotating platform for spraying according to claim 1, characterized in that: The top surface of the shaft seat is provided with a sealing structure for sealing between the shaft seat and the rotating shaft. The sealing structure includes a sealing ring arranged between the shaft seat and the rotating shaft and an annular pressure plate located above the sealing ring. The annular pressure plate is connected to the top surface of the shaft seat.

7. The multi-workpiece rotating platform for spraying according to any one of claims 1 to 6, characterized in that: A gantry is arranged above the frame, and the gantry is provided with a guide rod located directly above the corresponding chuck assembly and a locking device for locking the guide rod. The guide rod is coaxially distributed with the workpiece, and the bottom of the guide rod is rotatably connected to a rotary top for resisting the workpiece.

8. The multi-workpiece rotating platform for spraying according to claim 7, characterized in that: The locking device includes a fixing seat, a spring chuck and a screw cap which are sequentially mounted on the guide rod. The fixing seat, the spring chuck and the screw cap all have through holes in the middle for the guide rod to pass through. The bottom of the fixing seat is fixedly connected to the gantry. The lower inner wall of the screw cap is threadedly connected to the upper outer wall of the fixing seat. The upper part of the screw cap is provided with an annular baffle for locking and pressing the upper part of the spring chuck. The lower outer wall of the spring chuck and the upper inner wall of the fixing seat are provided with conical surfaces.

9. The multi-workpiece rotating platform for spraying according to claim 8, characterized in that: The upper part of the guide rod is provided with a buffer protection mechanism, which includes a spring sleeved on the guide rod and a limiting ring fixed on the top of the guide rod, and the spring is located between the screw cap and the limiting ring.

10. The multi-workpiece rotating platform for spraying according to claim 7, characterized in that: The bottom of the guide rod is provided with a sleeve structure for installing the rotating top, and the sleeve structure includes an inner cylinder and an outer cylinder which are plug-connected. The upper part of the outer cylinder is fixedly connected to the bottom of the guide rod, and the lower part of the outer cylinder is fixedly connected to the outer wall of the inner cylinder. The lower part of the inner cylinder has a accommodating cavity for inserting the rotating top, and a bearing is arranged between the upper part of the rotating top and the inner cylinder.

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