Plastic product welding and trimming equipment
By using high-temperature and high-pressure welding methods with components such as transformer gas boxes, transformer electrical boxes, and trimmers, the problems of chemical corrosion, appearance damage, and deformation in the connection of plastic products have been solved, achieving high-quality plastic welding and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-15
- Publication Date
- 2026-04-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing plastic joining methods suffer from problems such as chemical corrosion, damage to appearance, poor sealing, and deformation. In particular, the deformation caused by hot air welding is difficult to solve.
It adopts a structure including a variable pressure gas box, a variable pressure electrical box, an edge trimmer, and a pressurization component. It uses high-temperature and high-pressure gas welding and utilizes automatic positioning, pressurization, and edge trimming components to ensure welding stability and precise temperature control, remove burrs, and avoid deformation.
It achieves high-quality welding of plastic products, ensuring sealing and appearance integrity, avoiding chemical corrosion and deformation, adapting to various workpiece models, and improving processing stability and efficiency.
Smart Images
Figure CN121798908A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of plastic molding technology, specifically to a plastic product welding and trimming device. Background Technology
[0002] In modern industrial production, plastic materials are widely used in numerous fields such as automobile manufacturing, electronics, medical devices, packaging, and construction due to their advantages such as light weight, low cost, strong corrosion resistance, and good plasticity. With the continuous expansion of application scenarios and the increasing diversification of functional requirements for plastic products, achieving high-quality and reliable plastic welding has become a key issue in the industry.
[0003] Our known plastic manufacturing processes and traditional plastic joining methods have many limitations. For example, joining methods using adhesives and mechanical joining both have certain technical problems. For instance, adhesive joining can lead to chemical corrosion of plastic products, and the volatilization of the adhesive may harm the environment and human health. Mechanical joining usually damages the appearance of plastic products, and its sealing performance is greatly reduced. Currently, the most commonly used methods are hot air welding and electric heating plate joining. This process can fully ensure the stability and sealing of plastics, but it often leads to deformation of plastic products. These problems need to be solved. Summary of the Invention
[0004] The purpose of this invention is to provide a welding and trimming device for plastic products to solve the problems mentioned in the prior art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: The trimming equipment includes a transformer gas box and a transformer electrical box. A pressure regulating electric valve is installed on the transformer gas box, and an anti-scalding pipe is installed on the output end of the pressure regulating electric valve. A trimmer is installed at the end of the anti-scalding pipe furthest from the pressure regulating electric valve. The transformer gas box and the transformer electrical box are mounted on a trimming frame. A docking mold is rotatably connected to the trimming frame, and a pressurizing component is installed on the docking mold. The pressurizing component is inductively connected to the transformer gas box. A traveling frame is installed on the trimmer, and a following wheel is rotatably connected to the traveling frame. A frequency conversion heating plate is installed inside the trimmer, and the frequency conversion heating plate is electrically connected to the transformer electrical box via a wire. The traveling frame is also electrically connected to the transformer electrical box via a wire. A trimming component is slidably connected to the docking mold. A waste gas recovery hood is installed on the trimming frame. During processing, the plastic product needs to be welded first. Before welding, the mold needs to be used to align it. After alignment and calibration, start the transformer box and transformer air box, and simultaneously send the workpiece to be processed into the docking mold. Adjust the docking mold to fully clamp the workpiece, and then adjust the trimmer. The variable frequency heating plate inside the trimmer will work. After adjustment, the docking mold will provide thickness feedback, and the temperature on the variable frequency heating plate will be adjusted for temperature compensation. The trimmer will spray high-temperature and high-pressure gas towards the seam of the plastic product. There are two welding methods: one is top and bottom docking, and the other is left and right docking. By adjusting the working mode of the trimmer and the docking mold, we can adapt to the welding operation of different processes. During the welding process, the trimming component will work to process the edge seam of the welded plastic product and remove the burrs generated in the process. At the same time, the pressurizing component will also work during the processing to control the hot air passage.
[0006] The trimmer is equipped with a connecting flange, which is connected to a pressure regulating electric valve. The pressure regulating electric valve is equipped with a controller, which is electrically connected to the mating mold via a wire. A movable mesh cover is installed on the frequency conversion heating plate, and the movable mesh cover is slidably connected to the trimmer. Multiple heat transfer racks are installed inside the trimmer, and the density of the heat transfer racks gradually increases from the trimmer to the connecting flange. The movable mesh cover slides in contact with the corresponding heat transfer rack. During welding, the anti-scalding tube is connected to the regulating electric valve through the connecting flange. The controller adjusts the pressure regulating electric valve to control the air volume and air flow rate. When conveying high-temperature gas, high-pressure gas is provided by a variable pressure gas box, which heats the high-pressure gas and sends it into the trimmer through the anti-scalding tube. The heat transfer racks are used to disperse the heat on the frequency conversion heating plate. This density of heat transfer racks can fully compensate for the lost heat and prevent the heat of the transmitted gas from being too high, which could cause the plastic products to melt.
[0007] The docking mold includes a support platform with a connector at its bottom. A docking motor is mounted on the trimming frame, and the motor's output is connected to the connector. A positioning frame is mounted on the support platform, and multiple support frames are slidably connected to it. A positioning airbag is installed inside the positioning frame, pressing against the support frame. A return spring is fitted on the support frame, with its two ends pressing against the positioning frame and the support frames respectively. The plastic product to be processed is mounted on the support platform. Then, the positioning frame is activated, and the positioning airbag inside is inflated. The airbag pushes out of the support frame, causing the support frame to move the plastic product closer to the edge of the support platform until it is completely pressed against it. When docking is required, the docking motor will rotate the support frame to achieve the welding operation. After welding is completed, the positioning airbag is released, and the positioning frame retracts back into the support frame under the action of the return spring.
[0008] The docking mold also includes a thickness feedback frame, which is slidably connected to the trimmer. The trimmer has a thickness feedback scale, and the thickness feedback frame has a calibrator that slides in contact with the thickness feedback scale. The trimmer also has an electrical control box, which is electrically connected to the transformer gas box and transformer electrical box via wires. Different thicknesses of plastic products require different temperatures of heat for processing, so the thickness needs to be measured, calibrated, and fed back. Moving the calibrator will cause it to move on the thickness feedback scale. Through the scale feedback, the thickness of the current plastic product is known. The thickness data is then input into the electrical control box, which controls the heat output of the transformer gas box and adjusts the controller and the frequency converter heating plate to achieve precise heat regulation.
[0009] The pressurization assembly includes an absorption box containing an absorption turbine and a turbine pair, as well as a pressurization motor connected to the turbine. The turbine and turbine pair mesh. A guide frame is mounted on the trimming frame, and the absorption box is connected to the guide frame. During the welding process, high-pressure airflow passes through the seam. The absorption box, located on the other side of the workpiece, then operates, and the pressurization motor drives the turbine to rotate. Through threaded engagement, the turbine pair also rotates, capturing the passing airflow. This operation effectively guides the high-temperature, high-pressure gas, preventing gas accumulation that could lead to excessive melting of the seam, and fully utilizing the high-temperature, high-pressure gas.
[0010] The absorption box is equipped with a first polymerization pipe and a second polymerization pipe, which are symmetrically arranged along the center line of the absorption box. The outlets of the first and second polymerization pipes have an angle of 20°≤α≤30° at the absorption port of the absorption box. A feedback resistor is also installed inside the absorption box, which is electrically connected to the transformer box through a wire. When high-temperature and high-pressure gas enters the absorption box, it is sent into the first and second polymerization pipes through the channels inside the absorption box. Under the detection of the feedback resistor, the degree of loss of the high-temperature and high-pressure gas to the workpiece can be determined, and the gas entering the absorption box is sent back to the area around the joint to compensate for the heat required for dissolution. At the same time, the gas impact can be used to stabilize the gas absorption direction of the absorption box, and this angle can maximize the stability of the airflow direction.
[0011] The trimming assembly includes a trimming plate and a trimming sub-plate. A sliding rail is provided on the trimming frame, and the trimming plate is fixedly connected to the sliding rail. A sliding seat is provided at the bottom of the trimming sub-plate, and the sliding seat is slidably connected to the sliding rail. A baking plate is installed inside both the trimming plate and the trimming sub-plate. The baking plate is electrically connected to a transformer box via wires. Trimming wheels are rotatably connected inside both the trimming plate and the trimming sub-plate. During trimming, the welded workpiece passes through the trimming plate and the trimming sub-plate. Under the action of the internal baking plate, the fine burrs are fully melted. At the same time, the distance between the trimming plates gradually decreases, stabilizing the movement direction of the plastic product and also stabilizing its shape to prevent deformation.
[0012] The trimming wheel is a spiral roller, and a trimming motor is installed inside the trimming plate. The output end of the trimming motor is connected to the trimming wheel. A tensioning bracket is installed on the trimming sub-plate, and a tensioning wheel is rotatably connected to the tensioning bracket. The output end of the trimming motor is connected to the trimming wheel on the trimming sub-plate via a pulley. The tensioning bracket and the trimming sub-plate are connected by a spring shaft. When performing edge trimming, the trimming motor is started, which will drive the trimming wheel to rotate. The spiral roller hitting the trimming wheel greatly improves the effect of capturing or breaking long burrs. At the same time, when adjusting the distance between the trimming plate and the trimming sub-plate, the tensioning bracket and the tensioning wheel can also fully adjust the tension of the pulley to ensure the best transmission effect.
[0013] The traveling frame includes a pressure rod and a positioning rod, which are rotatably connected by a spring shaft. A pressure lever is mounted on the pressure rod, and a positioning sensor is mounted on the positioning rod. A sliding servo is mounted on the trimming frame, electrically connected to the positioning sensor. The sliding servo engages with the teeth on the trimmer, which is slidably connected to the trimming frame. During welding, the traveling frame needs to contact the plastic product, while the following wheel ensures smooth sliding of the pressure rod. When a movement occurs, the pressure lever on the pressure rod slides on the positioning sensor to determine the current deflection angle and shape change. The sliding servo adjusts the position of the trimmer, ensuring sufficient distance between the high-temperature, high-pressure gas and the plastic product, thus guaranteeing the optimal welding temperature.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This application uses a structural component with automatic positioning function to ensure the stability of plastic products during processing. It also adds manual input parameter information to better adapt to various types of workpieces. In addition, it uses a structural component with automatic edge finding function to fully ensure the distance between high temperature and high pressure gas and workpiece, ensuring the stability of workpiece processing and avoiding problems such as deformation of the weld joint and incomplete welding.
[0015] 2. This invention employs a structural component with a pressurization function. The pressurization component guides the high-temperature and high-pressure gas and improves the stability of the high-temperature and high-pressure gas during flow, ensuring that the high-temperature and high-pressure gas does not accumulate heat. At the same time, the structural component with timely feedback can fully detect heat loss and accurately compensate for it.
[0016] 3. This application also employs a trimming assembly to promptly remove burrs from the finished weld area. The use of a trimming wheel assembly with a specific shape ensures that larger burrs on the workpiece are effectively removed and that the workpiece does not deform. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 This is a schematic diagram of the longitudinal cross-sectional structure of the present invention; Figure 5 for Figure 4 A magnified structural diagram of part A in the middle; Figure 6 This is a schematic diagram of the pressurization component structure of the present invention; Figure 7 This is a schematic diagram of the trimming component structure of the present invention; Figure 8 This is a partial cross-sectional view of the trimmer of the present invention; In the diagram: 1. Transformer air box; 2. Transformer electrical box; 3. Pressure regulating electric valve; 4. Anti-scalding pipe; 5. Trimming tool; 501. Connecting flange; 502. Controller; 503. Moving mesh cover; 504. Heat transfer rack; 6. Trimming rack; 601. Sliding rail; 602. Sliding servo motor; 7. Docking mold; 701. Support platform; 702. Connector; 703. Docking motor; 704. Positioning frame; 705. Support frame; 706. Return spring; 707. Thickness feedback frame; 708. Calibrator; 709. Electrical control box; 710. Positioning airbag; 8. Pressurization assembly; 801. Absorption box; 802. Absorption vortex 803. Gear; 804. Absorption turbine pair; 805. Pressurizing motor; 806. Guide frame; 807. First polymerization pipe; 808. Second polymerization pipe; 809. Feedback resistor; 900. Traveling frame; 901. Pressurizing rod; 902. Positioning rod; 903. Pressurizing lever; 904. Positioning sensor; 10. Follower wheel; 11. Variable frequency heating plate; 12. Trimming assembly; 1201. Trimming plate; 1202. Trimming sub-plate; 1203. Sliding seat; 1204. Baking plate; 1205. Trimming wheel; 1206. Trimming motor; 1207. Tensioning bracket; 1208. Tensioning wheel; 13. Exhaust gas recovery hood. Detailed Implementation
[0018] 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 skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] Example: Figures 1-8As shown, the present invention provides a technical solution. The trimming device includes a pressure-regulating air box 1 and a pressure-regulating electrical box 2. A pressure-regulating electric valve 3 is installed on the pressure-regulating electric valve 3. An anti-scalding pipe 4 is installed on the output end of the pressure-regulating electric valve 3. A trimmer 5 is installed at the end of the anti-scalding pipe 4 away from the pressure-regulating electric valve 3. The pressure-regulating air box 1 and the pressure-regulating electrical box 2 are installed on a trimming frame 6. A docking mold 7 is rotatably connected to the trimming frame 6. A pressurizing component 8 is installed on the docking mold 7. The pressurizing component 8 and the pressure-regulating air box 1 are connected to the pressure-regulating electrical box 2. The trimmer 5 is inductively connected to a traveling frame 9, on which a following wheel 10 is rotatably connected. A variable frequency heating plate 11 is installed inside the trimmer 5, and the variable frequency heating plate 11 is electrically connected to the transformer box 2 via wires. The traveling frame 9 is also electrically connected to the transformer box 2 via wires. A trimming assembly 12 is slidably connected to the mating mold 7. A waste gas recovery hood 13 is installed on the trimming frame 6. During processing, the plastic product needs to be welded first. Before welding, it is necessary to utilize… Align the workpiece with the mold. After alignment, start the transformer box 2 and transformer air box 1. Simultaneously, send the workpiece to be processed into the docking mold 7. Adjust the docking mold 7 to fully clamp the workpiece. Then adjust the trimmer 5. The variable frequency heating plate 11 inside the trimmer 5 will work. After adjustment, the docking mold 7 will provide thickness feedback and adjust the temperature on the variable frequency heating plate 11 for temperature compensation. The trimmer 5 will spray high temperature and high pressure gas towards the seam of the plastic product. There are two welding methods: one is top and bottom docking, and the other is left and right docking. By adjusting the working mode of the trimmer 5 and the docking mold 7, we can adapt to the welding operation of different processes. During the welding process, the trimming component 12 will work to treat the edge seam of the welded plastic product and remove the burrs generated in the process. At the same time, the pressure component 8 will also work during the processing to control the hot air passage.
[0020] The trimmer 5 is equipped with a connecting flange 501, which is connected to a pressure regulating electric valve 3. The pressure regulating electric valve 3 is equipped with a controller 502, which is electrically connected to the docking mold 7 via a wire. A movable mesh cover 503 is installed on the frequency conversion heating plate 11, and the movable mesh cover 503 is slidably connected to the trimmer 5. Multiple heat transfer frames 504 are installed inside the trimmer 5, with the density of the heat transfer frames 504 gradually increasing from the trimmer 5 towards the connecting flange 501. The movable mesh cover 503 slides in contact with the corresponding heat transfer frame 504. During welding, the connection flange... 501 connects the anti-scalding tube 4 to the regulating electric valve. The controller 502 adjusts the pressure regulating electric valve 3 to control the air volume and air flow rate. When conveying high-temperature gas, the high-pressure gas is provided by the variable pressure gas box 1 and heated by the variable pressure gas box 1. The gas is then sent into the trimmer 5 through the anti-scalding tube 4. The heat transfer rack 504 is used to disperse the heat on the frequency conversion heating plate 11. The heat transfer rack 504 with this density setting can fully compensate for the lost heat and at the same time avoid the problem of the transmitted gas being too hot, which could cause the plastic products to melt.
[0021] The docking mold 7 includes a support platform 701, with a connector 702 at its bottom. A docking motor 703 is mounted on the trimming frame 6, with its output connected to the connector 702. A positioning frame 704 is mounted on the support platform 701, and multiple support frames 705 are slidably connected to the positioning frame 704. A positioning airbag 710 is housed within the positioning frame 704 and rests against the support frames 705. A return spring 706 is fitted onto each support frame 705, with both ends of the return spring 706 resting against the positioning frame 704 and the support frames 705, respectively. The plastic product is installed on the support platform 701. Then, the positioning frame 704 is activated and the positioning airbag 710 inside the positioning frame 704 is inflated. The positioning airbag 710 pushes out of the support frame 705. The support frame 705 will drive the plastic product to move closer to the edge of the support platform 701 until it is completely in contact. When the upper and lower docking operation is required, the docking motor 703 will drive the support frame 705 to rotate, thereby realizing the welding operation. After the welding is completed, the positioning airbag 710 is released. Under the action of the return spring 706, the positioning frame 704 will retract back into the support frame 705.
[0022] The docking mold 7 also includes a thickness feedback frame 707, which is slidably connected to the trimmer 5. The trimmer 5 is equipped with a thickness feedback scale, and the thickness feedback frame 707 is equipped with a calibrator 708, which is in slidable contact with the thickness feedback scale. The trimmer 6 is also equipped with an electrical control box 709, which is electrically connected to the transformer gas box 1 and the transformer electrical box 2 via wires. Plastic products of different thicknesses require different temperatures of heat for processing, so the thickness needs to be measured, calibrated, and fed back. Moving the calibrator 708 will move it on the thickness feedback scale. Through the scale feedback, the thickness of the current plastic product is known. Then, the thickness data is input into the electrical control box 709, which controls the heat output of the transformer gas box 1 and adjusts the controller 502 and the frequency conversion heating plate 11 to achieve precise heat adjustment.
[0023] The pressurizing assembly 8 includes an absorption box 801, which contains an absorption turbine 802 and an absorption turbine pair 803. A pressurizing motor 804 is also located within the absorption box 801, with its output connected to the absorption turbine 802. The absorption turbine 802 and the absorption turbine pair 803 mesh. A guide frame 805 is mounted on the trimming frame 6, and the absorption box 801 is connected to the guide frame 805. During the welding process, high-pressure airflow passes through the seam. Subsequently, the absorption box 801, located on the other side of the workpiece, operates, and the pressurizing motor 804 operates, driving the absorption turbine 802 to rotate. Through threaded engagement, the absorption turbine pair 803 also rotates, thereby capturing the passing airflow. This operation effectively guides the high-temperature, high-pressure gas, preventing gas accumulation that could lead to excessive melting of the seam, and fully utilizing the high-temperature, high-pressure gas.
[0024] The absorption box 801 is equipped with a first polymerization pipe 806 and a second polymerization pipe 807, which are symmetrically arranged along the center line of the absorption box 801. The outlets of the first polymerization pipe 806 and the second polymerization pipe 807 have an angle of 20°≤α≤30° at the absorption port of the absorption box 801. A feedback resistor 808 is also installed inside the absorption box 801. The feedback resistor 808 is electrically connected to the transformer box 2 through a wire. When high-temperature and high-pressure gas enters the absorption box 801, the captured high-temperature and high-pressure gas is sent into the first polymerization pipe 806 and the second polymerization pipe 807 through the channels inside the absorption box 801. Under the detection of the feedback resistor 808, the degree of loss of the high-temperature and high-pressure gas to the current workpiece can be known, and the gas entering the absorption box 801 is sent back to the area around the joint to compensate for the heat required for dissolution. At the same time, the gas impact can be used to stabilize the gas absorption direction of the absorption box 801, and this angle can maximize the stability of the airflow direction.
[0025] The trimming assembly 12 includes a trimming plate 1201 and a trimming sub-plate 1202. A sliding rail 601 is provided on the trimming frame 6. The trimming plate 1201 is fixedly connected to the sliding rail 601. A sliding seat 1203 is provided at the bottom of the trimming sub-plate 1202. The sliding seat 1203 is slidably connected to the sliding rail 601. A baking plate 1204 is provided in the trimming plate 1201 and the trimming sub-plate 1202 respectively. The baking plate 1204 is electrically connected to the transformer box 2 through a wire. Trimming wheels 1205 are rotatably connected in the trimming plate 1201 and the trimming sub-plate 1202 respectively. During trimming, the workpiece that has been welded passes through the trimming plate 1201 and the trimming sub-plate 1202. Under the action of the internal baking plate 1204, the fine burrs can be fully melted. At the same time, the distance between the trimming plates 1201 gradually decreases, which stabilizes the movement direction of the plastic product and also stabilizes the shape of the plastic product to avoid deformation.
[0026] The trimming wheel 1205 is a spiral roller. A trimming motor 1206 is installed inside the trimming plate 1201, and the output of the trimming motor 1206 is connected to the trimming wheel 1205. A tensioning bracket 1207 is installed on the trimming sub-plate 1202, and a tensioning wheel 1208 is rotatably connected to the tensioning bracket 1207. The output of the trimming motor 1206 is connected to the trimming wheel 1205 on the trimming sub-plate 1202 via a pulley. The tensioning bracket 1207 is connected to the trimming sub-plate 1202. Connected by a spring shaft, when performing edge trimming, the trimming motor 1206 is started, which drives the trimming wheel 1205 to rotate. The spiral roller hitting the trimming wheel 1205 significantly improves the effect of capturing or breaking long burrs. At the same time, when adjusting the distance between the trimming plate 1201 and the trimming sub-plate 1202, the tension bracket 1207 and the tension wheel 1208 work together to fully adjust the tension of the pulley and ensure the best transmission effect.
[0027] The traveling frame 9 includes a pressure rod 901 and a positioning rod 902, which are rotatably connected by a spring shaft. A pressure lever 903 is provided on the pressure rod 901, and a positioning sensor 904 is provided on the positioning rod 902. A sliding servo 602 is provided on the trimming frame 6, which is electrically connected to the positioning sensor 904. The sliding servo 602 engages with the teeth on the trimmer 5, and the trimmer 5 is slidably connected to the trimming frame 6. During welding, the traveling frame 9 needs to contact the plastic product, while the follower wheel 10 ensures the smooth sliding of the pressure rod 901. When a movement occurs, the pressure lever 903 on the pressure rod 901 will slide on the positioning sensor 904 to determine the current deflection angle and the current shape change. The sliding servo 602 is used to adjust the position of the trimmer 5 to ensure the distance between the high-temperature and high-pressure gas and the plastic product, thus ensuring the optimal welding temperature.
[0028] Working principle: The workpiece is placed on the mating mold, and the plastic product is installed on the support platform 701. Then, the positioning frame 704 is activated, and the positioning airbag 710 inside the positioning frame 704 is inflated. The positioning airbag 710 pushes out of the support frame 705 and against the plastic workpiece. The calibrator 708 is moved, and the calibrator 708 will move on the thickness feedback scale. Through scale feedback, the thickness data is input into the electrical control box 709. After calibration and alignment, the transformer box 2 and the transformer air box 1 are activated. Then, the trimmer 5 is adjusted. High-pressure gas is provided by the transformer air box 1 and heated by the transformer air box 1. The high-pressure gas is sent into the trimmer 5 through the anti-scalding pipe 4. The heat transfer frame 504 is used to disperse the heat on the frequency conversion heating plate 11, adjust the temperature on the frequency conversion heating plate 11, and compensate for the temperature loss. The trimmer 5 sprays high-temperature and high-pressure gas to... Spraying is applied to the seams of plastic products. By adjusting the working mode of the trimmer 5 and the docking mold 7, different welding processes can be adapted. During the welding process, the pressure component 8 also works to control the hot air passage. The high-temperature and high-pressure air will pass through the seam, and then the absorption box 801 located on the other side of the workpiece will work. The pressure motor 804 will work to drive the absorption turbine 802 to rotate. Through threaded engagement, it will also drive the absorption turbine pair 803 to rotate. During trimming, the welded workpiece passes through the trimming plate 1201 and the trimming sub-plate 1202. Under the action of the internal baking plate 1204, the fine burrs can be fully melted. The trimming motor 1206 will drive the trimming wheel 1205 to rotate. The spiral roller hitting the trimming wheel 1205 will greatly improve the effect of capturing or breaking long burrs.
[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A welding and trimming device for plastic products, characterized in that: The trimming equipment includes a pressure-regulating air box (1) and a pressure-regulating electrical box (2). A pressure-regulating electric valve (3) is installed on the pressure-regulating electric valve (3). An anti-scalding tube (4) is installed on the output end of the pressure-regulating electric valve (3). A trimmer (5) is installed at the end of the anti-scalding tube (4) away from the pressure-regulating electric valve (3). The pressure-regulating air box (1) and the pressure-regulating electrical box (2) are installed on a trimming frame (6). A docking mold (7) is rotatably connected to the trimming frame (6). A pressurizing assembly (8) is installed on the docking mold (7). The component (8) is inductively connected to the transformer gas box (1). The trimmer (5) is provided with a traveling frame (9). The traveling frame (9) is rotatably connected with a following wheel (10). The trimmer (5) is provided with a frequency conversion heating plate (11). The frequency conversion heating plate (11) is electrically connected to the transformer box (2) through a wire. The traveling frame (9) is electrically connected to the transformer box (2) through a wire. The mating mold (7) is slidably connected with a trimming assembly (12). The trimming frame (6) is provided with a waste gas recovery hood (13).
2. The plastic product welding and trimming equipment according to claim 1, characterized in that: The trimmer (5) is provided with a connecting flange (501), which is connected to the pressure regulating electric valve (3). The pressure regulating electric valve (3) is provided with a controller (502), which is electrically connected to the docking mold (7) through a wire. The variable frequency heating plate (11) is provided with a movable mesh cover (503), which is slidably connected to the trimmer (5). The trimmer (5) is provided with multiple heat transfer racks (504), and the density of the heat transfer racks (504) gradually increases from the trimmer (5) to the connecting flange (501). The movable mesh cover (503) is in sliding contact with the corresponding heat transfer rack (504).
3. The plastic product welding and trimming equipment according to claim 1, characterized in that: The docking mold (7) includes a support platform (701), a connector (702) is provided at the bottom of the support platform (701), a docking motor (703) is provided on the trimming frame (6), the output end of the docking motor (703) is connected to the connector (702), a positioning frame (704) is provided on the support platform (701), a plurality of support frames (705) are slidably connected on the positioning frame (704), a positioning airbag (710) is provided inside the positioning frame (704), the positioning airbag (710) abuts against the support frame (705), a return spring (706) is sleeved on the support frame (705), and the two ends of the return spring (706) abut against the positioning frame (704) and the support frame (705) respectively.
4. The plastic product welding and trimming equipment according to claim 3, characterized in that: The docking mold (7) also includes a thickness feedback frame (707), which is slidably connected to the trimmer (5). The trimmer (5) is provided with a thickness feedback scale, and the thickness feedback frame (707) is provided with a calibrator (708). The calibrator (708) is in slid contact with the thickness feedback scale. The trimmer frame (6) is also provided with an electrical control box (709), which is electrically connected to the transformer gas box (1) and the transformer electrical box (2) through wires.
5. The plastic product welding and trimming equipment according to claim 1, characterized in that: The pressurizing assembly (8) includes an absorption box (801), an absorption turbine (802) and an absorption turbine pair (803) are provided inside the absorption box (801), a pressurizing motor (804) is provided inside the absorption box (801), the output end of the pressurizing motor (804) is connected to the absorption turbine (802), the absorption turbine (802) and the absorption turbine pair (803) are engaged, a guide frame (805) is provided on the trimming frame (6), and the absorption box (801) is connected to the guide frame (805).
6. The plastic product welding and trimming equipment according to claim 5, characterized in that: The absorption box (801) is provided with a first polymerization pipe (806) and a second polymerization pipe (807). The first polymerization pipe (806) and the second polymerization pipe (807) are symmetrically arranged along the center line of the absorption box (801). The outlet of the first polymerization pipe (806) and the second polymerization pipe (807) of the absorption box (801) have an angle of 20°≤α≤30°. The absorption box (801) is also provided with a feedback resistor (808). The feedback resistor (808) is electrically connected to the transformer box (2) through a wire.
7. The plastic product welding and trimming equipment according to claim 1, characterized in that: The trimming assembly (12) includes a trimming plate (1201) and a trimming sub-plate (1202). A sliding rail (601) is provided on the trimming frame (6). The trimming plate (1201) is fixedly connected to the sliding rail (601). A sliding seat (1203) is provided at the bottom of the trimming sub-plate (1202). The sliding seat (1203) is slidably connected to the sliding rail (601). A baking plate (1204) is provided in the trimming plate (1201) and the trimming sub-plate (1202). The baking plate (1204) is electrically connected to the transformer box (2) through a wire. Trimming wheels (1205) are rotatably connected in the trimming plate (1201) and the trimming sub-plate (1202).
8. A plastic product welding and trimming equipment according to claim 7, characterized in that: The trimming wheel (1205) is a spiral roller. A trimming motor (1206) is installed inside the trimming plate (1201). The output end of the trimming motor (1206) is connected to the trimming wheel (1205). A tensioning bracket (1207) is installed on the trimming sub-plate (1202). A tensioning wheel (1208) is rotatably connected to the tensioning bracket (1207). The output end of the trimming motor (1206) is connected to the trimming wheel (1205) on the trimming sub-plate (1202) through a pulley. The tensioning bracket (1207) and the trimming sub-plate (1202) are connected through a spring shaft.
9. A plastic product welding and trimming equipment according to claim 1, characterized in that: The traveling frame (9) includes a pressure rod (901) and a positioning rod (902). The pressure rod (901) and the positioning rod (902) are rotatably connected by a spring shaft. A pressure lever (903) is provided on the pressure rod (901), and a positioning sensor (904) is provided on the positioning rod (902). A sliding servo is provided on the trimming frame (6). The sliding servo is electrically connected to the positioning sensor (904). The sliding servo meshes with the teeth on the trimmer (5). The trimmer (5) and the trimming frame (6) are slidably connected.