Material frame conveying device of automatic production line for laser cleaning of outer wall of complex curved surface valve

Abstract

The utility model discloses a kind of material frame conveying devices of complex curved surface valve class outer wall laser cleaning automation production line, upper layer chain conveyer is equipped in the just above of lower layer chain conveyer, and one lifting conveyer is respectively arranged in the left and right ends of two chain conveyers, and one transfer device is also adjacently arranged in the right side end of right side lifting conveyer.The utility model is reasonably distributed by being provided with lower layer chain conveyer, upper layer chain conveyer, left and right side end lifting conveyer and transfer device in limited space, can automatically realize the cyclic reciprocating conveying of material frame, not only improve the conveying efficiency of workpiece, but also cannot occupy too much space, with good popularization and application value.

Description

Technical Field

[0001] This utility model relates to a conveying device, and more particularly to a material frame conveying device for an automated production line for laser cleaning of the outer wall of complex curved valves. Background Technology

[0002] There are two main existing technologies for rust removal from the outer walls of complex curved valves: high-pressure water cleaning and shot blasting. However, both methods have reached their technological limits. High-pressure water cleaning cannot effectively remove paint from valve components. After secondary ultrasonic cleaning, the previously well-adhered paint may soften and peel off, causing secondary contamination of the valve's internal channels. Shot blasting can effectively clean surface paint and rust, but for valve components with high internal precision, there is a risk of steel shot entering the interior, causing malfunction.

[0003] Laser cleaning technology has been widely applied in various fields, but for valve components with complex curved surfaces, manual laser cleaning is still the primary method, and there is currently no automated production line capable of achieving batch, high-efficiency cleaning. Therefore, we plan to develop and design a corresponding automated laser cleaning production line. This automated production line will generally include a pallet conveyor, a laser cleaning unit, a unloading unit, and a material frame conveyor. The pallet conveyor will automatically transport the workpieces and pallets; the laser cleaning unit will automatically perform laser cleaning on the workpieces; the unloading unit will transfer the cleaned workpieces to the material frame of the conveyor transfer device; and the material frame conveyor will then transfer the cleaned workpieces to the next process step.

[0004] Currently, valve components with complex curved surfaces are mainly cleaned manually using lasers. Therefore, there are no mature automated production line technologies available for reference. During the design and development of the entire production line, we wanted the material frame conveyor to not only transport the cleaned workpieces to the next process, but also return the material frame carrying the workpieces from the next process to the head of the material frame conveyor. However, there are currently no mature technologies available for reference, so how to design its structure has become a key technical problem that needs to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a material frame conveying device for an automated production line for laser cleaning of complex curved valve outer walls. This material frame conveying device not only transports the cleaned workpieces to the next process, but also returns the material frame carrying the workpieces from the next process to the head of the conveying transfer device.

[0006] The technical solution of this utility model: a material frame conveying device for an automated production line for laser cleaning of complex curved surface valve outer walls, including a lower chain conveyor, an upper chain conveyor of the same length above the lower chain conveyor, and a lifting conveyor adjacent to each of the left and right ends of the two chain conveyors. A transfer device is also adjacent to the right end of the right lifting conveyor. The lifting conveyor includes a mounting base, on which a lifting cylinder is vertically mounted. The push rod end of the lifting cylinder is connected to a mounting body, through which a horizontal rotating rod is inserted. A sprocket is mounted on the horizontal rotating rod, and the sprocket is connected to a chain. One end of the chain is fixed to the mounting base, and the other end is fixedly connected to a vertical mounting plate. A slider is mounted on the vertical mounting plate, slidingly sleeved on a guide rod, which is vertically fixed to the mounting base. A horizontally extending support frame is also mounted on the vertical mounting plate, and a short-distance chain conveyor is mounted on the support frame.

[0007] In the aforementioned automated production line for laser cleaning of complex curved valve outer walls, the material frame conveying device has sprockets at both ends of the horizontal rotating rod.

[0008] In the aforementioned automated production line for laser cleaning of complex curved valve outer walls, a connecting block is provided on the back of the vertical mounting plate, and the other end of the chain is fixedly connected to the connecting block.

[0009] In the aforementioned automated production line for laser cleaning of complex curved valve outer walls, two sliders are provided on the upper and lower sides of the left and right sides of the back of the vertical mounting plate.

[0010] In the aforementioned automated production line for laser cleaning of complex curved valve outer walls, the material frame conveying device has two guide rods, and the tops of the two guide rods are fixedly connected together by a connecting plate.

[0011] In the aforementioned automated production line for laser cleaning of complex curved valve outer walls, the lower chain conveyor and the upper chain conveyor are equipped with stop devices spaced a distance apart along their length.

[0012] In the aforementioned automated production line for laser cleaning of complex curved valve outer walls, the upper chain conveyor is provided with one or a group of stop devices at intervals along its length. When the stop devices are set as a group, they are set at the loading station of the upper chain conveyor. A group of stop devices consists of multiple stop devices arranged sequentially at intervals.

[0013] In the aforementioned automated production line for laser cleaning of complex curved valve outer walls, the upper chain conveyor is equipped with at least one feeding station. A protective plate is installed at the feeding station, and the bottom of the protective plate is fixed to the push rod of the support cylinder. The support cylinder is fixed to the frame of the upper chain conveyor.

[0014] In the aforementioned automated production line for laser cleaning of complex curved valve outer walls, the transfer device is a lifting car, and a short-distance chain conveyor is installed inside the lifting car.

[0015] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model can automatically realize the cyclic conveying of the material frame by reasonably distributing and setting up a lower chain conveyor, an upper chain conveyor, left and right end lifting conveyors and a transfer device in a limited space. This not only improves the conveying efficiency of the workpiece, but also does not occupy too much space, and has good promotion and application value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A top-view structural diagram;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure without a transfer device;

[0019] Figure 4 for Figure 3 A schematic diagram of the side structure;

[0020] Figure 5 A schematic diagram of the conveyor structure is provided.

[0021] Figure 6 A structural diagram for raising the conveyor to another angle.

[0022] Reference numerals: 1-Lower chain conveyor, 2-Upper chain conveyor, 3-Lifting conveyor, 4-Transfer device, 5-Mounting base, 6-Lifting cylinder, 7-Mounting body, 8-Horizontal rotating rod, 9-Sprocket, 10-Chain, 11-Vertical mounting plate, 12-Slider, 13-Guide rod, 14-Support frame, 15-Short-distance chain conveyor, 16-Connecting block, 17-Connecting plate, 18-Stop device, 19-Protective plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0024] An embodiment of this utility model: a material frame conveying device for an automated production line for laser cleaning of complex curved surface valve outer walls, comprising a lower chain conveyor 1, an upper chain conveyor 2 of equal length directly above the lower chain conveyor 1, a feeding device directly above the upper chain conveyor 2, and a lifting conveyor 3 adjacent to each of the left and right ends of the two chain conveyors, with a transfer device 4 adjacent to the right end of the right lifting conveyor 3; the lifting conveyor 3 includes a mounting base 5, on which a lifting cylinder is vertically mounted. 6. The push rod head of the lifting cylinder 6 is connected to a mounting body 7. A horizontal rotating rod 8 is inserted into the mounting body 7. A sprocket 9 is provided on the horizontal rotating rod 8. The sprocket 9 is connected to a chain 10. One end of the chain 10 is fixed to the mounting base 5, and the other end is fixedly connected to the vertical mounting plate 11. A slider 12 is provided on the vertical mounting plate 11. The slider 12 is slidably sleeved on the guide rod 13. The guide rod 13 is vertically fixed to the mounting base 5. A horizontally forward-extending support frame 14 is also provided on the vertical mounting plate 11. A short-distance chain conveyor 15 is provided on the support frame 14.

[0025] In use, the empty material frame is placed on the upper chain conveyor 2 and conveyed from the left end to the right end. When the empty material frame is conveyed to the unloading device, it stops moving forward. The unloading device will put the laser-cleaned workpiece into the empty material frame, and then the material frame loaded with workpiece continues to move forward. At the same time, the right end lifting conveyor 3 moves to lift its short-distance chain conveyor 15 to the same height as the upper chain conveyor 2. Specifically, the lifting cylinder 6 pushes the rod upward, causing the horizontal rotating rod 8 to move upward. Since the length of the chain 10 is fixed, when the distance from the end of the chain 10 connected to the mounting base 5 to the sprocket 9 becomes longer, and conversely, the distance from the end connected to the vertical mounting plate 11 becomes shorter, the lifting action of the chain 10 will drive the vertical mounting plate 10 to move upward along the guide rod 13. The vertical mounting plate 10 will then drive the support frame 14 and the short-distance chain conveyor 15 to move upward together. Conversely, when the push rod of the lifting cylinder 6 retracts downward, the vertical mounting plate 10 will drive the support frame 14 and the short-distance chain conveyor 15 to descend together. When the short-distance chain conveyor 15 rises to the high position, its top is flush with the top of the upper chain conveyor 2, and when it descends to the low position, it is flush with the top of the lower chain conveyor 1.

[0026] When the workpiece-loaded frame moves to the rightmost end of the upper chain conveyor 2, the short-distance chain conveyor 15 of the right-side lifting conveyor 3 starts, and its conveying direction is consistent with that of the upper chain conveyor 2, so that the workpiece-loaded frame is transferred from the upper chain conveyor 2 to the short-distance chain conveyor 15 of the right-side lifting conveyor 3. The short-distance chain conveyor 15 continues to run, and then transfers the workpiece-loaded frame to the transfer device 4. The transfer device 4 then conveys the frame to the next process.

[0027] After the worker or equipment in the next process removes the workpiece, the transfer device 4 moves in the opposite direction with the empty material frame. At this time, the short-distance chain conveyor 15 of the right-side lifting conveyor 3 is still in a high position and has stopped running. When the transfer device 4 transports the empty material frame to the right-side lifting conveyor 3, the short-distance chain conveyor 15 of the right-side lifting conveyor 3 rotates in the opposite direction, so that the conveying direction of its short-distance chain conveyor 15 is opposite to the conveying direction of the upper chain conveyor 2. The empty material frame is transferred to the short-distance chain conveyor 15 of the right-side lifting conveyor 3 by the transfer device 4.

[0028] Then, the short-distance chain conveyor 15 of the right-side lifting conveyor 3 descends to a low position under the action of the lifting cylinder 6, and then rotates again in the opposite direction to the upper chain conveyor 2, so that the empty material frame is transferred from the short-distance chain conveyor 15 of the right-side lifting conveyor 3 to the right side of the lower chain conveyor 1. The conveying direction of the lower chain conveyor 1 is exactly opposite to the conveying direction of the upper chain conveyor 2. The empty material frame is conveyed from its right side to its left side through the lower chain conveyor 1. During the conveying process, the short-distance chain conveyor 15 of the right-side lifting conveyor 3 moves up to be level with the upper chain conveyor 2, and conveys the next material frame loaded with workpieces.

[0029] When the empty material frame is conveyed from the right end of the lower chain conveyor 1 to the left end, the short-distance chain conveyor 15 of the left-side lifting conveyor 3 should be in the lower position and maintain the same conveying direction as the lower chain conveyor 1, so that the empty material frame is transferred from the lower chain conveyor 1 to the short-distance chain conveyor 15 of the left-side lifting conveyor 3. Then, the short-distance chain conveyor 15 of the left-side lifting conveyor 3 stops operating and rises to be level with the upper chain conveyor 2 under the action of the lifting cylinder 6.

[0030] Then, the short-distance chain conveyor 15 of the left-side lifting conveyor 3 starts again, and its conveying direction is consistent with that of the upper chain conveyor 2, thereby transferring the empty material frame to the upper chain conveyor 2. In this way, a closed-loop conveying system is formed to realize the cyclic conveying of the material frame.

[0031] During the material frame conveying process, when there is a material frame in the transfer device 4, or when the short-distance chain conveyor 15 at the right end is in an ascending or descending state, even if the material frame loaded with workpieces on the upper chain conveyor 2 has moved to the right end, the material frame loaded with workpieces should not continue to be conveyed forward until the empty material frame is transferred by the transfer device 4 to the lower chain conveyor 1 via the short-distance chain conveyor 15 of the right-side lifting conveyor 3, and when the short-distance chain conveyor 15 of the right-side lifting conveyor 3 rises to a high position, the material frame loaded with workpieces at the rightmost end of the upper chain conveyor 2 will be transferred to the short-distance chain conveyor 15 of the right-side lifting conveyor 3.

[0032] Similarly, when the short-distance chain conveyor 15 on the left end moves up or down, even if the empty material frame on the lower chain conveyor 1 has moved to its leftmost end, the empty material frame should not continue to be conveyed forward until the short-distance chain conveyor 15 on the left end moves down to a low position. Only then will the empty material frame located at the leftmost end of the lower chain conveyor 1 be transferred to the short-distance chain conveyor 15 of the left-side lifting conveyor 3.

[0033] Both ends of the horizontal rotating rod 8 are equipped with sprockets 9, and each sprocket 9 is connected to a chain 10. Under the synchronous action of the two chains 10, the short-distance chain conveyor 15 can move stably up and down in a straight line.

[0034] The vertical mounting plate 11 has a connecting block 16 on its back, and the other end of the chain 10 is fixedly connected to the connecting block 16.

[0035] The vertical mounting plate 11 has two sliders 12 on the upper and lower left side of the back, and two sliders 12 on the upper and lower right side. All sliders 12 are slidably connected to the guide rod 13. This structure ensures the stability of the short-distance chain conveyor 15 in vertical linear movement.

[0036] Two guide rods 13 are provided, and the tops of the two guide rods 13 are fixedly connected together by a connecting plate 17 to form a relatively stable overall structure, thereby ensuring the stability of the short-distance chain conveyor 15 of the lifting conveyor 3 in vertical linear movement.

[0037] Both the lower chain conveyor 1 and the upper chain conveyor 2 are equipped with stop devices 18 at intervals along their length. The stop devices 18 on the upper chain conveyor 2 stop the material frame when it reaches the receiving station, facilitating material receiving. Simultaneously, material frames at other stations on the upper chain conveyor 2 also stop moving forward under the action of the stop devices 18 to prevent collisions. Furthermore, when there are material frames on the transfer device 4 or when the short-distance chain conveyor 15 on the right side is rising or falling, the stop devices 18 prevent the material frames loaded with workpieces from being transferred to the lifting conveyor 3 on the right side or falling outside the upper chain conveyor 2. The stop devices 18 on the lower chain conveyor 1 are primarily to prevent the empty material frame located at the leftmost end of the lower chain conveyor 1 from continuing to move forward and falling outside the lower chain conveyor 1 during the rising or falling of the short-distance chain conveyor 15 on the left side. When the empty material frame at the leftmost end of the lower chain conveyor 1 stops conveying, other stopping devices 18 can be used to keep the empty material frames behind it in a stopped state, so as to prevent them from continuing to be conveyed forward and accumulating together.

[0038] The stopping device 18 is a commonly used component on conveying devices, and any mature product of any form can be used. Therefore, its specific structure will not be described in detail here.

[0039] The upper chain conveyor 2 is equipped with one or more stop devices 18 at intervals along its length. When the stop devices 18 are set as a group, they are located at the loading station of the upper chain conveyor 2. A group of stop devices 18 consists of multiple stop devices 18 arranged sequentially at intervals. As shown in the attached drawings, the upper chain conveyor 2 has a total of four stations, two of which are loading stations. Each non-loading station has a corresponding stop device 18, while the loading station has a group of stop devices 18. This allows the upper chain conveyor 2 to simultaneously transport four material frames. During the material frame receiving process, the stop devices 18 at all four stations activate simultaneously, blocking all four material frames to prevent them from colliding while moving forward. The reason for setting a group of stop devices 18 at the loading station is that the workpieces to be cleaned vary in size. During the process of transporting the workpieces to the laser cleaning device, the size can be detected by the detection device, and the corresponding cleaning and unloading programs can be called. For larger workpieces, after being placed into the empty material frame by the unloading device, the frame moves forward directly. For smaller workpieces, after being placed into the empty material frame by the unloading device, to improve the conveying efficiency of the material frame, the foremost stop device 18 at the loading station moves downward, causing the material frame loaded with workpieces to move forward a certain distance to the second stop device 18 at the loading station, where it is blocked and stops moving forward. Then, the unloading device will place another workpiece into the material frame, thereby improving the conveying efficiency of the material frame. When loading multiple workpieces, the reason for moving the material frame forward a certain distance is to prevent subsequently placed workpieces from falling directly onto the previously placed workpieces, which could cause damage or cause the workpieces to fall out of the material frame. When the material frame at the receiving station is loaded with multiple workpieces, the material frames at other stations remain stationary.

[0040] When the material frame is full of workpieces at the first loading station, it will not stop moving to the second loading station.

[0041] At least one loading station is provided on the upper chain conveyor 2. A protective plate 19 is provided at the loading station. The protective plate 19 is located between the conveyor chains on both sides of the upper chain conveyor 2 and in front of the stop device 18 at the loading station. The bottom of the protective plate 19 is fixed on the push rod of the support cylinder, and the support cylinder is fixed on the frame of the upper chain conveyor 2. Since the laser-cleaned workpieces are gripped by the unloading device and then placed in the empty material frame of the upper chain conveyor 2, there is a certain height difference between the unloading device and the empty material frame during placement. This allows the grippers of the unloading device to open and allow the laser-cleaned workpieces to fall into the empty material frame. The falling workpieces exert a certain impact force on the empty material frame, which is supported by the conveyor chain of the upper chain conveyor 2. The impact force of the workpieces can easily damage the conveyor chain. Therefore, a protective plate 19 is installed. When the empty material frame is conveyed to the loading station, it stops moving forward under the action of the stop device 18. At this time, the empty material frame is directly above the protective plate 19. The support cylinder at the bottom of the protective plate 19 lifts the protective plate 19 and the empty material frame upwards to a certain height, separating the empty material frame from the conveyor chain and preventing damage to the conveyor chain under the impact force of the workpieces. After the workpieces fall into the empty material frame, the support cylinder then drives the protective plate 19 and the material frame downwards, allowing the material frame to be supported on the conveyor chain.

[0042] The transfer device 4 is a lifting car, commonly known as an elevator car. A short-distance chain conveyor 15 is fixedly installed inside the lifting car. When the short-distance chain conveyor 15 of the transfer device 4 is at its lowest position, it is exactly at the same height as the upper chain conveyor 2. During the simultaneous transport of workpieces and material frames, the short-distance chain conveyor 15 on the lifting conveyor 3 at the right end of the upper chain conveyor 2 is at its highest position, at the same height as the upper chain conveyor 2 and the short-distance chain conveyor 15 of the transfer device 4. The upper chain conveyor 2, the short-distance chain conveyor 15 of the lifting conveyor 3, and the short-distance chain conveyor 15 of the transfer device 4 sequentially form a complete conveyor belt, so that the material frame loaded with workpieces can be transported from the upper chain conveyor 2 to the short-distance chain conveyor 15 of the lifting conveyor 3 and then to the short-distance chain conveyor 15 of the transfer device 4. During the conveying process of the workpiece-loaded frame, the conveying directions of the upper chain conveyor 2, the short-distance chain conveyor 15 of the lifting conveyor 3, and the short-distance chain conveyor 15 of the transfer device 4 remain in the same direction. After the workpiece-loaded frame is transferred to the short-distance chain conveyor 15 of the transfer device 4, the lifting car moves upward, lifting the workpiece-loaded frame to the next process level. After the workers in the next process remove the workpiece, the lifting car moves downward with the empty frame. At this time, the short-distance chain conveyor 15 of the right-side lifting conveyor 3 is still at a high position and its operation stops. When the lifting car moves to a low position, the right-side lifting conveyor 3 and the short-distance chain conveyor 15 of the transfer device 4... All 5 rotate in opposite directions, transferring the empty material frame from the short-distance chain conveyor 15 of the transfer device 4 to the short-distance chain conveyor 15 of the right-side lifting conveyor 3. After the empty material frame is completely inside the short-distance chain conveyor 15 of the right-side lifting conveyor 3, the right-side lifting conveyor 3 and the short-distance chain conveyor 15 of the transfer device 4 stop rotating. Then, the right-side lifting conveyor 3 drives its short-distance chain conveyor 15 down to a lower position, so that its short-distance chain conveyor 15 is flush with the lower chain conveyor 1.

Claims

1. A material frame conveying device for an automated production line for laser cleaning of complex curved surface valve outer walls, characterized in that: The system includes a lower chain conveyor (1), an upper chain conveyor (2) of the same length above the lower chain conveyor (1), and a lifting conveyor (3) adjacent to each of the left and right ends of the two chain conveyors. A transfer device (4) is also adjacent to the right end of the right lifting conveyor (3). The lifting conveyor (3) includes a mounting base (5), a lifting cylinder (6) is vertically mounted on the mounting base (5), and the push rod head of the lifting cylinder (6) is connected to a mounting body (7). A horizontally rotating rod is inserted into the mounting body (7). The rod (8) is equipped with a sprocket (9) on the horizontal rotating rod (8). The sprocket (9) is connected to the chain (10). One end of the chain (10) is fixed on the mounting base (5), and the other end is fixedly connected to the vertical mounting plate (11). The vertical mounting plate (11) is equipped with a slider (12). The slider (12) is slidably sleeved on the guide rod (13). The guide rod (13) is vertically fixed on the mounting base (5). The vertical mounting plate (11) is also equipped with a horizontally forward-extending support frame (14). The support frame (14) is equipped with a short-distance chain conveyor (15).

2. The material frame conveying device for the automated production line of laser cleaning of complex curved surface valve outer walls according to claim 1, characterized in that: Both ends of the horizontal rotating rod (8) are provided with sprockets (9).

3. The material frame conveying device for the automated production line of laser cleaning of complex curved surface valve outer walls according to claim 1, characterized in that: The vertical mounting plate (11) has a connecting block (16) on its back, and the other end of the chain (10) is fixedly connected to the connecting block (16).

4. The material frame conveying device for the automated production line of laser cleaning of complex curved surface valve outer walls according to claim 1, characterized in that: The vertical mounting plate (11) has two sliders (12) on the upper and lower left and right sides of its back.

5. The material frame conveying device for the automated production line of laser cleaning of complex curved surface valve outer walls according to claim 1, characterized in that: The guide rod (13) is provided in two parts, and the tops of the two guide rods (13) are fixedly connected together by a connecting plate (17).

6. The material frame conveying device for the automated production line of laser cleaning of complex curved surface valve outer walls according to claim 1, characterized in that: Stopping devices (18) are provided at intervals along the length of the lower chain conveyor (1) and the upper chain conveyor (2).

7. The material frame conveying device for the automated production line of laser cleaning of complex curved surface valve outer walls according to claim 6, characterized in that: The upper chain conveyor (2) is provided with one or a group of stop devices (18) at intervals along its length. When the stop devices (18) are set as a group, they are set at the loading station of the upper chain conveyor (2). A group of stop devices (18) consists of multiple stop devices (18) arranged in sequence at intervals.

8. The material frame conveying device for the automated production line of laser cleaning of complex curved surface valve outer walls according to claim 1, characterized in that: At least one feeding station is provided on the upper chain conveyor (2), and a protective plate (19) is provided at the feeding station. The bottom of the protective plate (19) is fixed on the push rod of the support cylinder, and the support cylinder is fixed on the frame of the upper chain conveyor (2).

9. The material frame conveying device for the automated production line of laser cleaning of complex curved surface valve outer walls according to claim 1, characterized in that: The transfer device (4) is a lifting car, and a short-distance chain conveyor (15) is installed inside the lifting car.

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