Industrial robot for plastic and rubber welding

Abstract

The application relates to the technical field of industrial robots, in particular to an industrial robot for plastic and rubber welding, which comprises a rotating seat and a mounting seat arranged on the top surface of the rotating seat, the top surface of the mounting seat is provided with a mounting column, an ultrasonic welding mechanism is arranged on the mounting column, the ultrasonic welding mechanism comprises a welding head and a control assembly for driving the welding head to lift, and the top surface of the mounting seat is also provided with a butt joint mechanism, the butt joint mechanism comprises a butt joint table; the first negative pressure suction assembly and the second negative pressure suction assembly capable of adsorbing the two ends of a belt joint are arranged in the application, the two can automatically slide along the length direction of the belt, so that the welding position is adjusted, therefore, manual displacement is not needed in the application, the welding efficiency is improved, and the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial robots, in particular to a plastic and rubber welding industrial robot. BACKGROUND

[0002] In today's industrial field, industrial belts are important transmission and conveying components, mainly made of plastic or rubber materials. In the complete production and manufacturing process, one key link is to weld the two ends of the belt. This is because the industrial belt needs to be applied in the form of a ring to various mechanical equipment. The two ends of the belt are precisely connected and firmly welded to ensure that it forms a complete industrial belt, thereby ensuring stable transmission or conveying material functions in complex industrial production environments.

[0003] At present, for welding industrial belts, an ultrasonic welding machine is often used. The specific operation steps are as follows: first, the two ends of the industrial belt are precisely connected by hand, and the joint is smoothed. Then, the ultrasonic welding head is pressed against the welding position. After completing a welding, the belt position is moved, and the ultrasonic welding head continues to weld at another position of the belt joint, until the belt joint is completely attached after multiple weldings.

[0004] The above-mentioned method mainly uses manual operation with an ultrasonic welding machine. Each welding requires manual displacement, which is very troublesome and not conducive to improving the production efficiency of enterprises, and it is easy to cause high labor intensity of the industry. In addition, since the belt joint is often difficult to fully attach, manual pressing of the joint part is required during welding, which has certain safety hazards. In view of this, we propose a plastic and rubber welding industrial robot to effectively solve the above-mentioned problems. SUMMARY

[0005] The present application aims to provide a plastic and rubber welding industrial robot to solve the problems raised in the background.

[0006] The present application is achieved by the following technical solutions:

[0007] A plastic and rubber welding industrial robot, comprising a rotating seat and a mounting seat arranged on the top surface of the rotating seat, wherein the top surface of the mounting seat is provided with a mounting column, and the mounting column is provided with an ultrasonic welding mechanism, the ultrasonic welding mechanism comprises a welding head and a control assembly for driving the welding head to ascend and descend, and the top surface of the mounting seat is further provided with a butt joint mechanism, the butt joint mechanism comprises a butt joint table, the top surface of the butt joint table is provided with a mounting groove, the inside of the mounting groove is movably provided with a first negative pressure suction assembly and a second negative pressure suction assembly on both sides, and the inside of the mounting groove is further provided with a driving assembly for driving the first negative pressure suction assembly and the second negative pressure suction assembly to displace along the horizontal direction.

[0008] The second negative pressure suction assembly comprises a plurality of suction parts, each of which is in vertical sliding fit with the driving assembly; a welding table is arranged at the middle position of the inner part of the mounting groove, and the welding table is located directly below the welding head.

[0009] Optionally, the driving assembly comprises a displacement part, which is an internal hollow structure, the displacement part is in sliding fit with the inner bottom surface of the mounting groove, and the surface of the displacement part is further provided with an air nozzle for being connected with an external negative pressure source.

[0010] Optionally, the first negative pressure suction assembly comprises a suction part, which is an internal hollow structure, the top surface of the suction part is flush with the top surface of the welding table, a plurality of air holes are arranged on the top surface of the suction part, the bottom part of the suction part is connected with the displacement part through a gas guide column, and the two ends of the gas guide column are respectively connected with the suction part and the displacement part.

[0011] Optionally, the top surface of the displacement part is provided with a plurality of communication pipes, the plurality of communication pipes are respectively in one-to-one correspondence with the plurality of suction parts, the suction part is an internal hollow structure, the top surface of the suction part is provided with an air hole, the communication pipe penetrates the bottom wall of the suction part from bottom to top, and the two are in sliding and sealing fit.

[0012] Optionally, the inner front and rear walls of the mounting groove are both provided with a driving groove, the driving groove is a three-section structure sequentially connected by a first horizontal groove, an inclined groove and a second horizontal groove, the outer front and rear ends of the suction part are both provided with a guide block, and the guide block is movably embedded in the corresponding driving groove.

[0013] When the guide block is located in the first horizontal groove, the top surface of the suction part is higher than the top surface of the welding table, and when the guide block is located in the second horizontal groove, the top surface of the suction part is lower than the bottom surface of the welding table.

[0014] Optionally, the inner bottom surface of the suction part is provided with a sealing sleeve, the sealing sleeve is sleeved on the outside of the corresponding communication pipe, a first through hole is arranged on the top part of the side wall of the communication pipe, a second through hole is arranged on the bottom part of the side wall of the sealing sleeve, the first through hole and the second through hole are aligned when the guide block is located in the first horizontal groove, and the first through hole and the second through hole are misaligned when the guide block enters the inclined groove and the second horizontal groove.

[0015] Optionally, the welding table is an internal hollow structure, the top surface of the welding table is provided with an air hole, and the surface of the welding table is further provided with an air nozzle for being connected with an external negative pressure source.

[0016] Optionally, the bottom walls of several suction sections are slidably provided with vertically distributed optical rods, the bottom ends of which are connected to the top surface of the displacement section, and the optical rods and suction sections are sealed and fitted together.

[0017] Optionally, the drive assembly further includes a linear slide, the movable end of which is fixedly connected to the displacement part.

[0018] Optionally, the top surface of the docking platform is provided with a docking groove, the width of which is the same as the width of the belt to be welded, and the mounting groove is located on the inner bottom surface of the docking groove.

[0019] Compared with the prior art, the present invention provides an industrial robot for welding plastics and rubber, which has the following beneficial effects:

[0020] 1. The present invention has a first negative pressure suction component and a second negative pressure suction component that can attract the two ends of the belt joint. The two components can automatically slide along the length of the belt to adjust the welding position. Therefore, the present invention does not require manual repositioning, which helps to improve welding efficiency and reduce the labor intensity of workers.

[0021] 2. The two negative pressure suction components in this invention can make the two ends of the belt joint flat and fit together, so that it is not necessary to manually smooth the belt joint, thus helping to reduce the safety hazards of belt welding operation;

[0022] 3. The second negative pressure suction component in this invention includes several suction parts. As the second negative pressure suction component moves toward the welding table, the suction parts can descend in sequence, thereby gradually releasing the belt while ensuring the belt is flat. This helps the belt to remain attached during the welding process and improves the welding quality.

[0023] 4. In this invention, the negative pressure space inside the suction section can disappear in time when the suction sections move towards each other, thereby releasing the belt. This helps to improve the smoothness of the operation of this invention and avoids belt damage caused by excessive pulling. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the existing belt welding status;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the docking mechanism of the present invention;

[0027] Figure 4 This is a cross-sectional view of the docking mechanism of the present invention in its first state;

[0028] Figure 5 This is a cross-sectional view of the docking mechanism of the present invention in its second state;

[0029] Figure 6 This is a cross-sectional view of the docking mechanism of the present invention in its third state;

[0030] Figure 7 This is a schematic diagram of the docking platform structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the first negative pressure suction component of the present invention;

[0032] Figure 9 This is a cross-sectional view of the first negative pressure suction component of the present invention;

[0033] Figure 10 for Figure 9 Enlarged view of point A in the middle.

[0034] In the diagram: 100, Rotary seat; 200, Mounting seat; 201, Mounting column; 300, Ultrasonic welding mechanism; 301, Welding head; 400, Docking mechanism; 401, Docking platform; 402, Mounting groove; 403, First negative pressure suction assembly; 4031, Suction section; 4032, Air guide column; 404, Second negative pressure suction assembly; 4041, Suction section; 4042, Connecting pipe; 4043, Smooth rod; 4044, Guide block; 4045, Sealing sleeve; 4046, First through hole; 4047, Second through hole; 405, Welding table; 406, Drive assembly; 4061, Displacement section; 4062, Linear slide; 407, Drive groove; 4071, First horizontal groove; 4072, Inclined groove; 4073, Second horizontal groove; 408, Docking groove. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1 This is a schematic diagram of the butt joint state of an industrial belt before welding. It should be noted that in order to make the overall thickness of the belt uniform, both ends of the joint need to be cut. The thickness of both ends after cutting is half of the overall thickness, and the length of the joint is consistent. Therefore, the overall thickness of the belt can be uniform after the two ends of the belt are joined.

[0037] However, because the belt itself is made of flexible material, its two ends may not adhere properly after being joined. While manually pressing and smoothing it out can ensure welding quality, it poses a safety hazard, as fingers could easily be pinched by the welding head. Applying mechanical force to flatten it from top to bottom or from left to right can easily cause wrinkles to appear on the belt, significantly compromising the welding quality.

[0038] To address the above problems, we propose the following technical solutions:

[0039] Please see Figure 2 - Figure 10 An industrial robot for welding plastics and rubber includes a rotating base 100 and a mounting base 200 disposed on the top surface of the rotating base 100. The top surface of the mounting base 200 is provided with a mounting column 201, on which an ultrasonic welding mechanism 300 is mounted. The ultrasonic welding mechanism 300 includes a welding head 301 and a control component for driving the welding head 301 to rise and fall. The ultrasonic welding mechanism 300 also includes an ultrasonic generator, a transducer, and an amplitude transformer. The ultrasonic generator converts industrial frequency alternating current into a high-frequency electrical signal, typically between 20kHz and 40kHz. This electrical signal is transmitted to the transducer, which uses the inverse piezoelectric effect to convert the high-frequency electrical signal into mechanical vibration, i.e., ultrasonic waves. The ultrasonic waves generated by the transducer are amplified and transmitted through the amplitude transformer. The amplitude transformer converts the smaller amplitude generated by the transducer into a larger amplitude to better transfer energy to the welding area. Then, the ultrasonic waves amplified by the amplitude transformer are transmitted to the welding head 301, which contacts the workpiece, coupling the ultrasonic energy onto the workpiece.

[0040] Furthermore, the top surface of the mounting base 200 is also provided with a docking mechanism 400, which includes a docking platform 401. The docking platform 401 is fixed to the top surface of the mounting base 200, and the top surface of the docking platform 401 is provided with a mounting groove 402. The first negative pressure suction component 403 and the second negative pressure suction component 404 are movably arranged on both sides of the interior of the mounting groove 402, respectively. A welding platform 405 is provided in the middle of the interior of the mounting groove 402. The welding platform 405 is located directly below the welding head 301 and between the first negative pressure suction component 403 and the second negative pressure suction component 404. The first negative pressure suction component 403 and the second negative pressure suction component 404 are respectively used to attract the two ends of the belt to be welded.

[0041] The mounting slot 402 also houses a drive assembly 406 for driving the first negative pressure suction assembly 403 and the second negative pressure suction assembly 404 to move horizontally. The drive assembly 406 includes a displacement part 4061, which is a hollow structure. The displacement part 4061 slides within the inner bottom surface of the mounting slot 402, and its surface is provided with an air nozzle for connecting to an external negative pressure source. The drive assembly 406 also includes a linear slide 4062. The inner bottom surface of the mounting slot 402 has an embedded groove for mounting the linear slide 4062. The linear slide 4062 is installed in this embedded groove, and its movable end is fixedly connected to the displacement part 4061 to control the left and right translation of the displacement part 4061.

[0042] In this embodiment, the first negative pressure suction component 403 includes a suction part 4031, which has an internal hollow structure. The top surface of the suction part 4031 is flush with the top surface of the welding table 405. The top surface of the suction part 4031 is also provided with several air holes. The bottom of the suction part 4031 is connected to the displacement part 4061 through the air guide column 4032, and the two ends of the air guide column 4032 are respectively connected to the suction part 4031 and the displacement part 4061. Therefore, the movement of the displacement part 4061 can synchronously drive the suction part 4031 to move.

[0043] The second negative pressure suction component 404 includes several suction parts 4041, each of which is slidably engaged with the drive component 406 in a vertical manner. Specifically, the suction part 4041 has an internal hollow structure, and the top surface of the suction part 4041 has air holes. The top surface of the displacement part 4061 is provided with several connecting pipes 4042, each of which corresponds to one of the suction parts 4041. The connecting pipes 4042 penetrate the bottom wall of the suction part 4041 from bottom to top, and the two are slidably sealed together. That is, the suction part 4041 communicates with the displacement part 4061 through the connecting pipes 4042.

[0044] Furthermore, the bottom walls of several suction sections 4041 are slidably provided with vertically distributed optical rods 4043. The bottom ends of the optical rods 4043 are connected to the top surface of the displacement section 4061, and the optical rods 4043 and the suction sections 4041 are sealed together. The optical rods 4043 and the connecting tube 4042 are parallel to each other, and their function is to improve the stability of the suction section 4041 and ensure that it can slide vertically up and down.

[0045] In this embodiment, driving grooves 407 are provided on both the front and rear side walls of the mounting groove 402. Each driving groove 407 is a three-section structure consisting of a first horizontal groove 4071, an inclined groove 4072, and a second horizontal groove 4073 connected end-to-end. Figure 7As shown, guide blocks 4044 are provided at both the front and rear ends of the suction part 4041, and the guide blocks 4044 are movably embedded in the corresponding drive grooves 407. When the guide blocks 4044 are located inside the first horizontal groove 4071, the top surface of the suction part 4041 is higher than the top surface of the welding table 405. When the guide blocks 4044 are located inside the second horizontal groove 4073, the top surface of the suction part 4041 is lower than the bottom surface of the welding table 405. In the initial downward state, several guide blocks 4044 are located in the first horizontal groove 4071. When the second negative pressure suction assembly 404 moves towards the side closer to the welding table 405, the guide blocks 4044 pass from the first horizontal groove 4071 through the inclined groove 4072 and finally enter the second horizontal groove 4073.

[0046] It should be noted that in the initial state, such as Figure 4 As shown, at this time, several suction units 4041 are located on the left side of the welding table 405. As the welding process proceeds, the second negative pressure suction assembly 404 gradually moves intermittently towards the welding table 405, and the distance of each movement is the width of one suction unit 4041; as Figure 5 The diagram shows the state of the second negative pressure suction component 404 after it moves to the right once. At this time, the suction part 4041 located on the far right moves to the bottom of the welding table 405, and the guide blocks 4044 at both ends of the suction part 4041 move into the second horizontal groove 4073.

[0047] The inner bottom surface of the suction part 4041 is provided with a sealing sleeve 4045, which is sleeved on the outside of the corresponding connecting pipe 4042. A first through hole 4046 is opened on the top side wall of the connecting pipe 4042, and a second through hole 4047 is opened on the bottom side wall of the sealing sleeve 4045. When the guide block 4044 is located inside the first horizontal groove 4071, the first through hole 4046 and the second through hole 4047 are aligned. When the guide block 4044 enters the inclined groove 4072 and the second horizontal groove 4073, the first through hole 4046 and the second through hole 4047 are misaligned. That is, when the guide block 4044 is inside the first horizontal groove 4071, the inside of the suction part 4041 is a negative pressure environment, and the suction part 4041 can suck up the belt through the top air hole; conversely, when the guide block 4044 leaves the inside of the first horizontal groove 4071, the belt will separate from the corresponding suction part 4041.

[0048] In summary, during the initial operation of this embodiment, the two ends of the belt are precisely placed on the first negative pressure suction component 403 and the second negative pressure suction component 404, respectively. During this process, it is necessary to ensure that the free end of the belt on the first negative pressure suction component 403 extends between the welding table 405 and the second negative pressure suction component 404, forming a... Figure 4As shown in the diagram, although the front end of the belt on the second negative pressure suction component 404 is not completely adsorbed, the short length of the unadsorbed portion results in a negligible gap between this section and the belt on the first negative pressure suction component 403. When the welding head 301 applies pressure vertically from top to bottom, it effectively promotes a tight fit between the two ends of the belt, greatly reducing the possibility of wrinkles in the welded section and significantly improving the welding quality.

[0049] When the staff manually adjusted both ends of the belt to Figure 4 Once the indicated state is reached, the operation can be released, and the machine can then be started to enter automatic operation mode. After the welding head 301 completes one welding cycle with its initial downward pressure, the drive assembly 406 will automatically drive the first negative pressure suction assembly 403 and the second negative pressure suction assembly 404 to move to the right by a distance equal to the width of the suction section 4041, reaching... Figure 5 As shown in the diagram, the welding head 301 presses down again to perform a secondary welding operation. After this welding is completed, the drive assembly 406 will, following the same operational logic, push the first negative pressure suction assembly 403 and the second negative pressure suction assembly 404 to automatically shift to the right by the width of the suction section 4041, and repeat the above welding action. This cycle continues until the entire welding process is completed. After the welding operation is finished, the two negative pressure suction assemblies will automatically release the negative pressure, and the worker can then remove the welded belt.

[0050] In this embodiment, the drive component 406 propels the belt in an intermittent motion to complete the intermittent welding of the belt. Each time the belt moves, the suction unit 4041 near the welding table 405 automatically performs a descent action, effectively releasing the belt and ensuring the smoothness of the welding process. Simultaneously, the belt on the second negative pressure suction component 404 remains in a suction state, ensuring that the unsuspecting portion of the belt is always kept within a minimal length range. This collaborative working mechanism greatly reduces the probability of belt wrinkling during the welding process, effectively guaranteeing the stability and reliability of the welding quality.

[0051] In other embodiments of this application, the top surface of the docking platform 401 is provided with a docking groove 408, the width of which is the same as the width of the belt to be welded. The mounting groove 402 is located on the inner bottom surface of the docking groove 408. The welding platform 405 has an internal hollow structure, and the top surface of the welding platform 405 has air holes. The surface of the welding platform 405 is also provided with an air nozzle for connecting to an external negative pressure source. The length direction of the docking groove 408 is consistent with the length direction of the linear slide 4062. Therefore, the drive assembly 406 can control the belt to slide along its own length direction, so that different parts of the belt pass through the welding platform 405 in sequence, so that the welding head 301 can perform multiple welding processes on the belt.

[0052] It should be added that the external negative pressure source can be a vacuum pump, and a solenoid valve is installed on the pipeline connecting the welding station 405 to the external negative pressure source. When the solenoid valve is closed, the pressure inside the welding station 405 can be restored to normal.

[0053] Under initial operating conditions, both the displacement unit 4061 and the welding table 405 are under negative pressure. The pores on the top surface of the welding table 405 can apply additional adsorption force to the belt joint, causing the belt joint to adhere tightly to the surface of the welding table 405, ensuring accurate positioning of the belt before welding.

[0054] Furthermore, during the welding process, after each downward welding action of the welding head 301, the solenoid valve on the pipeline connecting the welding table 405 to the external negative pressure source will automatically close, causing the internal pressure of the welding table 405 to return to normal. In this way, when the first negative pressure suction component 403 pulls the belt, the welding table 405 will not experience additional resistance due to belt adsorption, effectively ensuring the smooth operation of the device. After the belt completes one movement, the welding table 405 will return to a negative pressure state and re-adsorb the belt, thus completing a complete work cycle, which will be repeated continuously thereafter.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial robot for welding plastics and rubber, comprising a rotating base and a mounting base disposed on the top surface of the rotating base, wherein the top surface of the mounting base is provided with a mounting column, and an ultrasonic welding mechanism is provided on the mounting column, the ultrasonic welding mechanism comprising a welding head and a control component for driving the welding head to rise and fall, characterized in that: The top surface of the mounting base is also provided with a docking mechanism, which includes a docking platform. The top surface of the docking platform is provided with a mounting groove. The first negative pressure suction component and the second negative pressure suction component are movably arranged on both sides of the inside of the mounting groove. The inside of the mounting groove is also provided with a driving component for driving the first negative pressure suction component and the second negative pressure suction component to move in the horizontal direction. The second negative pressure suction component includes several suction parts, each of which is vertically slidably engaged with the drive component; a welding platform is provided in the middle of the mounting groove, and the welding platform is located directly below the welding head; The drive assembly includes a displacement part, which has an internal hollow structure, and the surface of the displacement part is also provided with an air nozzle for connecting to an external negative pressure source. The top surface of the displacement part is provided with several connecting pipes, and each of the several connecting pipes corresponds to a certain number of suction parts. The suction part has an internal hollow structure and the top surface of the suction part has air holes. The connecting pipes penetrate the bottom wall of the suction part from bottom to top, and the two slide and seal together. The front and rear side walls of the mounting groove are provided with driving grooves. The driving groove is a three-section structure consisting of a first horizontal groove, an inclined groove and a second horizontal groove connected end to end. The front and rear ends of the suction part are provided with guide blocks, and the guide blocks are movably embedded in the corresponding driving grooves. When the guide block is located inside the first horizontal groove, the top surface of the suction part is higher than the top surface of the welding table; when the guide block is located inside the second horizontal groove, the top surface of the suction part is lower than the bottom surface of the welding table. The inner bottom surface of the suction part is provided with a sealing sleeve, which is sleeved on the outside of the corresponding connecting pipe. A first through hole is opened on the top side wall of the connecting pipe, and a second through hole is opened on the bottom side wall of the sealing sleeve. When the guide block is located inside the first horizontal groove, the first through hole and the second through hole are aligned. When the guide block enters the inclined groove and the second horizontal groove, the first through hole and the second through hole are misaligned.

2. The industrial robot for welding plastics and rubber according to claim 1, characterized in that: The displacement part slides into the inner bottom surface of the mounting groove.

3. The industrial robot for welding plastics and rubber according to claim 2, characterized in that: The first negative pressure suction component includes a suction part, which has an internal hollow structure. The top surface of the suction part is flush with the top surface of the welding table. The top surface of the suction part is also provided with several air holes. The bottom of the suction part is connected to the displacement part through an air guide column, and the two ends of the air guide column are respectively connected to the suction part and the displacement part.

4. The industrial robot for welding plastics and rubber according to claim 1, characterized in that: The welding station has an internal hollow structure, and the top surface of the welding station has air holes. The surface of the welding station is also provided with an air nozzle for connecting to an external negative pressure source.

5. The industrial robot for welding plastics and rubber according to claim 1, characterized in that: Several suction sections are slidably provided with vertically distributed light rods on their bottom walls. The bottom end of each light rod is connected to the top surface of the displacement section, and the light rod and the suction section are sealed together.

6. The industrial robot for welding plastics and rubber according to claim 2, characterized in that: The drive assembly also includes a linear slide, the movable end of which is fixedly connected to the displacement part.

7. The industrial robot for welding plastics and rubber according to claim 1, characterized in that: The top surface of the docking platform is provided with a docking groove, the width of which is the same as the width of the belt to be welded, and the mounting groove is located on the inner bottom surface of the docking groove.

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