An automatic rubberizing apparatus

Abstract

This invention belongs to the technical field of adhesive application equipment and discloses an automatic adhesive application device, including a rotating platform and a first adhesive application mechanism and a second adhesive application mechanism with identical structures. Both the first and second adhesive application mechanisms are arranged on the platform, and the platform drives either the first or second adhesive application mechanism to the adhesive application position through its own rotation. This invention innovatively designs a dual-machine, non-stop material changing structure, eliminating unplanned downtime caused by tape depletion, enabling the equipment to operate continuously for hours, thereby greatly improving the overall efficiency and production capacity of the equipment. Furthermore, it features a high degree of automation and excellent adhesive application effect. The adhesive application action is performed by an adhesive roller, which presses the workpiece during application to ensure that the workpiece does not shift. After adhesive application, a covering mechanism covers and presses the workpiece, ensuring complete adhesion between the tape and the workpiece surface, effectively eliminating common appearance defects such as "bubbles" and "wrinkles."

Description

Technical Field

[0001] This invention belongs to the technical field of adhesive application equipment, specifically relating to an automatic adhesive application device. Background Technology

[0002] In the field of adhesive application (such as tape application for PTC heaters), manual or semi-automatic adhesive application is a common processing method.

[0003] The following problems exist with relying on semi-automatic adhesive application equipment. Unable to change tape without stopping the machine: Existing semi-automatic tape application equipment typically only has a single tape applicator and a reel. When a roll of tape is about to run out, the equipment or operator needs to rely on sensors or visual inspection for warnings. Once the tape is used up, the entire machine must be completely stopped so that the operator can perform a series of operations: 1. Remove the empty material tray from the equipment; 2. Install the new material tray onto the equipment; 3. Manually pull out the head of the new material tray, pass it through a series of guide rollers, peeling plates and other structures, until it reaches the mounting head or material preparation platform; 4. Initialization settings such as alignment and parameter adjustment may also be required.

[0004] This process will trigger a series of chain reactions: 1. Severe loss of production efficiency: Each material change results in equipment downtime of 5 to 15 minutes or even longer. For large-scale, continuous production lines, frequent material change downtimes accumulate into huge waste of capacity, severely reducing the overall efficiency (OEE) of the equipment and becoming a bottleneck for improving overall capacity.

[0005] 2. Production cycle is forced to stop: On a high-speed automated production line, the shutdown of one piece of equipment means that the rhythm of the entire production line is disrupted, which may cause problems such as material blockage in upstream equipment or material shortage in downstream equipment, thus destroying the smoothness and continuity of production.

[0006] 3. Increased labor costs and high dependence: Operators must be ready to respond to material change requests at all times and cannot supervise multiple machines simultaneously, resulting in insufficient labor capacity. This problem is particularly pronounced during night shifts. 4. Poor process adaptability: Different models of PTC heaters have different sizes and adhesive application lengths, making it difficult to change and debug traditional equipment, which cannot meet the needs of flexible production.

[0007] The following problems exist with relying on manual tape application. 1. High precision and safety requirements: The insulating tape must completely cover the electrode area. Manual operation is prone to deviation, which can lead to insulation failure and safety hazards. 2. Production efficiency bottleneck: The large output of PTC heaters and the slow speed of manual operation have become key bottlenecks restricting the cycle time of automated production lines. 3. Difficulty in ensuring consistent quality: Manual application makes it difficult to ensure that the tape is free of bubbles and wrinkles, and uneven pressure affects the product's thermal conductivity and service life. Summary of the Invention

[0008] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an automatic adhesive application device, which focuses on solving the problem that semi-automatic adhesive application devices cannot change materials without stopping the machine, so as to improve the adhesive application efficiency, while avoiding disrupting the processing rhythm of the production line and damaging the smoothness and continuity of the production line.

[0009] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: An automatic adhesive applicator includes a rotating platform and a first adhesive applicator and a second adhesive applicator with identical structures. The first adhesive application mechanism and the second adhesive application mechanism are both arranged on the platform. The platform drives the first adhesive application mechanism or the second adhesive application mechanism to the adhesive application position by its own rotation.

[0010] The present invention provides a first adhesive application mechanism and a second adhesive application mechanism with identical structures on the platform, which serve as backups for each other. When the tape on the first tape applicator runs out, the platform can be rotated so that the second tape applicator can move to the tape applicator station and replace the first tape applicator to complete the tape applicator work. The first tape applicator can then reload the tape without affecting the normal operation of the production line. Similarly, when the tape on the second tape applicator runs out, the first tape applicator will take over the tape applicator work. The aforementioned dual-machine backup structure can effectively improve production efficiency and achieve efficient, uninterrupted, and automated production. Through the innovative design of the dual-machine backup non-stop material changing structure, unplanned downtime caused by tape depletion is eliminated, enabling the equipment to operate continuously for hours, thereby greatly improving the overall efficiency and capacity of the equipment.

[0011] As a preferred embodiment of the present invention, the second adhesive applicator includes, The tray provides a location for the tape to be wound. Release rollers are used to separate the release paper from the tape. Auxiliary rollers are used to regulate the movement trajectory of the conveyor belt; Adhesive rollers are used to apply adhesive tape to workpieces. The pressing mechanism is movable and equipped with casters; The cutting mechanism is movable and is equipped with a cutter for cutting the tape and a chuck for holding the tape. The adhesive roller is integrated into the cutting mechanism, and the cutter is connected to a linear power source. The coating mechanism is movable and equipped with coating pressure rollers; Waste tray, which is powered by a recycling motor.

[0012] In this invention, a tray is used to wind the tape. Under the limiting of the auxiliary roller, the tape regulates its own movement trajectory. At the peeling roller, the tape body and the release paper separate. The release paper goes to the waste tray. The recycling motor drives the waste tray to rotate, so that the release paper is wound and collected on the waste tray. After the release paper is peeled off, the tape contacts the workpiece surface under the pressure of the adhesive roller. As the workpiece moves away from the adhesive roller, the tape is pasted on the workpiece surface. After pasting, the cutter is driven by a linear power source to cut the tape. The cut part of the tape is clamped by the chuck to prevent the tape from becoming loose. When pasting is done, the chuck releases the tape. The function of the pressing mechanism is to press the workpiece down through the rollers. At the same time, the workpiece can also move relative to the pressing mechanism in terms of the adhesive application direction through the rotation of the rollers. The pressing mechanism helps to stabilize the posture of the workpiece and prevent the workpiece from shifting during adhesive application, which would lead to quality problems. The coating mechanism is used to coat and press the workpiece after the tape has been applied, thereby ensuring that the tape is completely adhered to the surface of the workpiece and effectively eliminating common appearance defects such as "bubbles" and "wrinkles".

[0013] As a preferred technical solution of the present invention, it also includes a dual-machine backup platform, which includes a servo motor and a platform, and the platform is connected to the output end of the servo motor.

[0014] In this invention, a servo motor is used as the power source for the rotation of the platform, and the servo motor controls the specific rotation angle of the platform, thereby enabling the first or second adhesive applicator to rotate precisely to the adhesive applicator station.

[0015] In a preferred embodiment of the present invention, the adhesive application station is equipped with a conveyor line, a tray, and a transfer mechanism. The conveyor line includes two parallel, spaced-apart belt conveyors; The transplanting mechanism is located below the conveyor line and includes a horizontal transducer, a vertical transducer, and a connector for cooperating with a pallet. The horizontal transducer outputs its movement in a direction parallel to the direction of the conveyor line, and the vertical transducer outputs its movement in a direction perpendicular to the direction of the conveyor line. The vertical transducer is fixed to the output end of the horizontal transducer, and the connector is detachably connected to the output end of the vertical transducer. The connector is located between the two conveyor belts.

[0016] In this invention, the workpiece is placed on a pallet with a cavity that matches the shape of the workpiece for precise positioning and support. Different pallets can be used to accommodate different workpiece shapes. The pallet is transported by a conveyor line. When the pallet moves to the position of the longitudinal mover, the output end of the longitudinal mover extends upwards, inserting a connector into the bottom of the pallet to establish a connection between the connector and the pallet, and restricting the relative displacement of the pallet with respect to the connector in the horizontal direction. The transverse mover then moves the longitudinal mover, connector, pallet, and workpiece together towards the adhesive application point. After the tape is applied to the workpiece, the movement of the workpiece pulls the tape to unwind continuously, thus achieving tape adhesion to the workpiece. After adhesion is complete, the tape is cut, the longitudinal mover moves down from the gap between the conveyor belts, the connector separates from the pallet, and the pallet falls back onto the conveyor line to the subsequent processing station. The transverse mover then resets, moving the longitudinal mover back to the standby position to await the arrival of the next pallet.

[0017] The beneficial effects of this invention are: 1. By innovatively designing a dual-machine backup material changing structure, unplanned downtime caused by belt depletion is eliminated, enabling the equipment to operate continuously for hours, thereby greatly improving the overall efficiency and production capacity of the equipment; 2. Excellent adhesive application effect: The adhesive application action is performed by the adhesive roller, which presses the workpiece during the application process to ensure that the workpiece does not shift. After the adhesive application is completed, the wrapping mechanism wraps and presses the workpiece to ensure that the tape is completely adhered to the workpiece surface, effectively eliminating common appearance defects such as "bubbles" and "wrinkles". 3. It has a high degree of automation and can automatically load and unload workpieces. Attached Figure Description

[0018] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is an isometric view of an embodiment of the present invention; Figure 2 This is a front view diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the dual-machine backup platform in an embodiment of the present invention; Figure 4 This is an isometric view of the second adhesive applicator in an embodiment of the present invention; Figure 5 This is a front view of the second adhesive applicator in an embodiment of the present invention; Figure 6 This is a schematic diagram of the conveyor line in an embodiment of the present invention; Figure 7 This is a schematic diagram of the tray structure in an embodiment of the present invention; Figure 8 This is a schematic diagram of the transplanting mechanism in an embodiment of the present invention; The symbols for the main components are explained below: 100. Dual-machine backup platform; 110. Servo motor; 120. Platform; 200. First adhesive application mechanism; 300. Second adhesive applicator; 310. Material tray; 330. Waste tray; 320. Peeling roller; 340. Pressing mechanism; 350. Cutting mechanism; 360. Coating mechanism; 400. Conveyor line; 410. Belt conveyor; 500, pallet; 600. Transplanting mechanism; 610. Lateral mover; 620. Longitudinal mover; 630. Connector. Detailed Implementation

[0019] The technical solutions of the present invention will be described in detail below with reference to specific embodiments and accompanying drawings. The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the present invention; these descriptions are explanatory and exemplary, and should not be construed as limiting the implementation methods or the scope of protection of the present invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein. Example

[0020] like Figure 2 , 3 As shown, this embodiment provides an automatic adhesive applicator, which uses a PTC heater as the workpiece to be coated with adhesive tape. It includes a platform 120 with rotation capability, and a first adhesive applicator 200 and a second adhesive applicator 300 with the same structure. The first adhesive application mechanism 200 and the second adhesive application mechanism 300 are arranged at 180° intervals on the platform 120. The platform 120 drives the first adhesive application mechanism 200 or the second adhesive application mechanism 300 to the adhesive application position by its own rotation.

[0021] In this embodiment, a first adhesive applicator 200 and a second adhesive applicator 300 with identical structures are provided on the platform 120. The two serve as backups for each other. When the first adhesive applicator 200 is in the adhesive applicator station, the second adhesive applicator 300 is in the material changing station. When the second adhesive applicator 300 is in the adhesive applicator station, the first adhesive applicator 200 is in the material changing station. When the first adhesive applicator 200 is in the adhesive applicator station and the tape is used up, the platform 120 can rotate 180°, so that the second adhesive applicator 300, which was originally in the material changing station, can rotate to the adhesive applicator station to take over the adhesive applicator work. The first adhesive applicator 200 can then reload the tape without affecting the normal operation of the production line. Similarly, when the tape on the second adhesive applicator 300 is used up, the first adhesive applicator 200 will take over the adhesive applicator work. The entire switching process can be completed within 10 seconds, and the production line does not need to stop and wait. The aforementioned dual-machine backup structure can effectively improve production efficiency and achieve efficient, uninterrupted, and automated production. Through the innovative design of the dual-machine backup non-stop material changing structure, unplanned downtime caused by tape depletion is eliminated, enabling the equipment to operate 24 hours a day without interruption, thereby greatly improving the overall efficiency and capacity of the equipment.

[0022] In some optional instances, logic and motion control are implemented by a programmable logic controller (PLC). The PLC communicates with each servo driver, sensor, and human-machine interface (HMI) via a PN bus. The HMI has a formula management function. When different models of PTC heaters need to be produced, the operator only needs to select the corresponding product model from the HMI drop-down menu. The system will automatically call the preset parameters such as adhesive path, cutting length, and adhesive pressure to achieve rapid production changeover. In this way, when changing products, there is no need for tedious manual debugging. The changeover time is reduced from several hours in traditional equipment to less than 10 minutes, which greatly enhances the production line's flexible production capability to cope with multi-variety and batch orders.

[0023] In some optional instances, the stage 120 is included in the dual-machine backup platform 100, which includes a servo motor 110 and the stage 120. The stage 120 is connected to the output of the servo motor 110. The servo motor 110 serves as the power source for the rotation of the stage 120 and controls the specific rotation angle of the stage 120, thereby enabling the first adhesive applicator 200 or the second adhesive applicator 300 to rotate precisely to the adhesive applicator station. Example

[0024] like Figure 1 , 2 As shown in Figures 4, 5, 6, 7, and 8, this embodiment provides an automatic adhesive applicator. The difference from Embodiment 1 is that the second adhesive applicator 300 includes... Tray 310 provides a position for tape winding; Release roller 320 is used to separate the release paper from the tape; Auxiliary rollers are used to regulate the movement trajectory of the conveyor belt; Adhesive rollers are used to apply adhesive tape to PTC heaters. The pressing mechanism 340 is movable and equipped with rollers; The cutting mechanism 350 is movable and is equipped with a cutter for cutting the tape and a chuck for holding the tape. The adhesive roller is integrated into the cutting mechanism 350, and the cutter is connected to a linear power source. The coating mechanism has a 360° range of motion and is equipped with coating pressure rollers; Waste tray 330, which is connected to the recycling motor. The adhesive application station is equipped with a conveyor line of 400, a pallet of 500, and a transfer mechanism of 600. The conveyor line 400 includes two parallel and spaced belt lines 410; The transplanting mechanism 600 is located below the conveyor line 400 and includes a transverse transducer 610, a longitudinal transducer 620, and a connector 630 for cooperating with the pallet 500. The transverse transducer 610 operates in a direction parallel to the direction of the conveyor line 400, and the longitudinal transducer 620 operates in a direction perpendicular to the direction of the conveyor line 400. The longitudinal transducer 620 is fixed to the output end of the transverse transducer 610, and the connector 630 is detachably connected to the output end of the longitudinal transducer 620. The connector 630 is located between the two conveyor lines 410.

[0025] In this embodiment, the tray 310 is used to wind the tape. Under the limitation of the auxiliary roller, the tape regulates its own movement trajectory. At the peeling roller 320, the tape body and the release paper are separated. The release paper goes to the waste tray 330. The recycling motor drives the waste tray 330 to rotate, so that the release paper is wound and collected on the waste tray 330. After the release paper is peeled off, the tape contacts the surface of the PTC heater under the pressure of the adhesive roller. As the PTC heater moves away from the adhesive roller, the tape is pasted on the surface of the PTC heater. After pasting, the cutter is driven by the linear power source to cut the tape. The cut part of the tape is clamped by the clamp to prevent the tape from becoming loose. When pasting again, the clamp can release the tape. The entire bonding process is as follows: The PTC heater is placed on the tray 500. The tray 500 has a cavity that matches the shape of the PTC heater for precise positioning and support. When the PTC heater has a different shape, different trays 500 can be used to adapt to different PTC heaters. The tray 500 is transported by the conveyor line 400. When the tray 500 moves to the position of the longitudinal mover 620, the output end of the longitudinal mover 620 extends upward and inserts the connector 630 into the bottom of the tray 500, so that the connector 630 and the tray 500 are connected and the relative displacement of the tray 500 with respect to the connector 630 in the horizontal direction is restricted. For example, the quick separation and connection between the connector 630 and the tray 500 can be achieved by the cooperation of the pin and the pin hole, or the cooperation of the positioning block and the positioning hole. The pressing mechanism 340 moves downward, pressing down the PTC heater through the rollers. At the same time, the PTC heater can also move relative to the pressing mechanism 340 about the adhesive application direction through the rotation of the rollers. The pressing mechanism 340 helps to stabilize the posture of the PTC heater and prevent the PTC heater from shifting during adhesive application, which would lead to quality problems. The transverse mover 610 drives the longitudinal mover 620, connector 630, tray 500, and the entire workpiece to the adhesive application point. The adhesive application roller moves down with the cutting mechanism 350 and presses the adhesive tape onto the surface of the PTC heater. The continuous movement of the transverse mover 610 will pull the adhesive tape to unwind continuously, thereby achieving the adhesion of the adhesive tape to the workpiece. After the adhesion is completed, the cutter cuts the adhesive tape, and the clamp holds the end of the adhesive tape to prevent the entire tape from becoming loose. After the PTC heater is covered with tape, it moves to the position of the wrapping mechanism 360. The wrapping mechanism 360 is used to wrap and press the PTC heater after the tape is applied, thereby ensuring that the tape is completely adhered to the surface of the PTC heater and effectively eliminating common appearance defects such as "bubbles" and "wrinkles". Specifically, as the wrapping mechanism 360 moves downward, the PTC heater moves relative to the wrapping roller. The wrapping roller rolls the tape on the surface of the PTC heater by rotating, ensuring that the tape is completely adhered to the surface of the PTC heater. This can effectively eliminate common appearance defects such as "bubbles" and "wrinkles". The bubble occurrence rate is less than 2%. This not only improves the appearance of the product, but also ensures the insulation and thermal conductivity of the tape and extends the service life of the PTC heater. After the rolling process is completed, the longitudinal mover 620 moves down from the gap between the belt lines 410, the joint 630 separates from the pallet 500, the pallet 500 falls back onto the conveyor line 400 and goes to the subsequent processing station, and the transverse mover 610 resets, driving the longitudinal mover 620 back to the standby position, waiting for the arrival of the next pallet 500.

[0026] The control of the above-mentioned mechanisms is implemented by a programmable logic controller, ensuring that the entire production process is smooth, efficient, and error-free.

[0027] In some alternative examples, the transverse translator 610 is a servo electric cylinder, the longitudinal translator 620 is a pneumatic cylinder, and the movement of the pressing mechanism 340, the cutting mechanism 350, and the covering mechanism 360 is achieved by the pneumatic cylinder.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An automatic adhesive applicator, characterized in that: It includes a rotating platform (120), and a first adhesive applicator (200) and a second adhesive applicator (300) with the same structure. The first adhesive applicator (200) and the second adhesive applicator (300) are both arranged on the platform (120). The platform (120) drives the first adhesive applicator (200) or the second adhesive applicator (300) to the adhesive applicator position by its own rotation.

2. The automatic adhesive applicator according to claim 1, characterized in that: The adhesive application station is equipped with a conveyor line (400), a tray (500), and a transplanting mechanism (600). The conveyor line (400) includes two parallel and spaced belt lines (410). The transplanting mechanism (600) is located below the conveyor line (400) and includes a transverse transverse (610), a longitudinal transverse (620), and a connector (630) for cooperating with the tray (500). The transverse transverse (610) outputs in a direction parallel to the direction of the conveyor line (400), and the longitudinal transverse (620) outputs in a direction perpendicular to the direction of the conveyor line (400). The longitudinal transverse (620) is fixed to the output end of the transverse transverse (610), and the connector (630) is detachably connected to the output end of the longitudinal transverse (620). The connector (630) is located between the two belt lines (410).

3. The automatic adhesive applicator according to claim 2, characterized in that: The transverse mover (610) is a servo electric cylinder.

4. An automatic adhesive applicator according to claim 2, characterized in that: The longitudinal mover (620) is a cylinder.

5. An automatic adhesive applicator according to claim 2, characterized in that: When the connector (630) mates with the tray (500), it restricts the relative displacement of the tray (500) with respect to the connector (630) in the horizontal direction.

6. An automatic adhesive applicator according to claim 1, characterized in that: The second adhesive applicator (300) includes, Tray (310) provides a position for tape winding; Release roller (320) is used to separate the release paper from the tape; Auxiliary rollers are used to regulate the movement trajectory of the conveyor belt; Adhesive rollers are used to apply adhesive tape to workpieces. The pressing mechanism (340) is movable and equipped with rollers; The cutting mechanism (350) is movable and is provided with a cutter for cutting the tape and a clamp for holding the tape, wherein the adhesive roller is integrated into the cutting mechanism (350); The coating mechanism (360) is movable and is equipped with coating pressure rollers.

7. An automatic adhesive applicator according to claim 6, characterized in that: It also includes a waste tray (330), which is powered by a recycling motor.

8. An automatic adhesive applicator according to claim 6, characterized in that: The cutter is connected to a linear power source.

9. An automatic adhesive applicator according to claim 1, characterized in that: It also includes a dual-machine backup platform (100), which includes a servo motor (110) and a platform (120), and the platform (120) is connected to the output end of the servo motor (110).

10. An automatic adhesive applicator according to any one of claims 1 to 9, characterized in that: It also includes programmable logic controllers (PLCs) for logic and motion control.

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