Automatic switching device for single-sided adhesive tape

Abstract

This utility model relates to an automatic switching device for single-sided adhesive tape. The device includes a support device, two film roll assemblies, a rotary drive device, and a pressure roller assembly. The two film roll assemblies are placed on the support device. The film roll assembly in the standby position is the standby film roll assembly, and the film roll assembly in the in-use position is the in-use film roll assembly. The in-use film roll assembly can be clamped and driven to rotate by the rotary drive device. This device is superior to the prior art in that it can realize automatic switching of single-sided adhesive tape without manual replacement, which helps to ensure product quality, improve work efficiency, and reduce the risk of accidents.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer manufacturing and processing, in particular to an automatic switching device for a single-sided adhesive tape. Background Art

[0002] All kinds of transformers, whether high-frequency transformers or low-frequency transformers, generally use skeletons. The enameled wires of each winding group are wound in the wire slots specified by the skeleton, and the starting and winding wires are hung at different pins. Generally, especially for transformers with multiple windings, there are strict regulations on the winding sequence. One or more layers of tape need to be wrapped between the windings for insulation. The tape is generally single-sided adhesive, which is convenient for roll packaging and production and use. Modern transformer automatic winding machines, each winding is completed by an automatic winding machine, each automatic winding machine has multiple axes of synchronous winding, typical 4-axis, 6-axis, 8-axis, 10-axis, 12-axis, 16-axis automatic winding machines, multi-axis automatic winding machines improve production efficiency than single-axis winding machines, multiple fully automatic winding machines are arranged in a row, first winding the first winding, wrapping N1 tape, then winding the second winding, wrapping N2 tape, then winding the third winding, wrapping N3 tape... until the last winding is wound and the outermost tape is wrapped. However, the defects of the prior art are: when the tape corresponding to a certain axis of a certain winding machine is almost used up, the tail of the whole roll of tape has left the rubber ring, the lower tape chuck has lost tension on the tape, the rotating sensor is far away from the tape chuck, the tail of the tape that has lost tension cannot be close to the rotating sensor, and the rotating sensor will not rotate like normal operation without the adhesion of the tape, so the touch screen sends an alarm message that the tape is used up, and at the same time, an alarm sound that the tape is used up is issued to remind the worker to change the tape. At this time, the tape has lost tension, and the appearance of the wire package being wrapped with tape is very ugly. Because the wrapped tape is loose, the tape has to be removed and repaired by manual wrapping. This is one of the disadvantages; sometimes, because the rotating sensor is far away from the tape chuck, there are many pulleys between the rotating sensor and the tape chuck. When the tail of the whole roll of tape leaves the tape chuck and the tape loses tension, these pulleys stick to the tape, making it easy for these pulleys to generate a small amount of traction on the tape. When the tape loses traction on the chuck Under the condition of , sometimes the rotary sensor can still rotate normally and lose the alarm function. Because the worker did not hear the alarm, he could not replace the ugly wire package in time and it automatically flowed to the next process, which was a serious quality accident. This was the second disadvantage. The entire wire wrapping and tape wrapping mechanism was located below the winding machine. The operator squatted to replace the tape, which was labor-intensive and laborious, and the work efficiency was low. This was the third disadvantage. As long as the whole roll of tape was finished, the rubber wrapping would be loose. At the end of each roll of tape, there was always a long section of tape that had to be removed and scrapped, resulting in a waste of tape materials. This was the fourth disadvantage. As long as the tape was replaced, the human hand approached the machine to operate. In order to prevent the left and right side slides from suddenly rushing towards the machine when the semi-finished wire packages were delivered back and forth in response to the material arrival sensor, in order to prevent industrial accidents, the entire machine, even six chain machines, had to actively press the pause button and stop waiting at the same time. The tape replacement action was lengthy and cumbersome, which would delay for a long time, resulting in a decrease in overall production efficiency. This was the fifth disadvantage.

[0003] Prior art: After checking, the automatic switching mechanism of the tape used in the packaging field is hot-melt wrapping at the head and tail, and the tape in use and the spare tape are in symmetrical positions. Therefore, both sides of this tape are non-sticky; for the double-sided non-sticky tape, it is easier to design automatic switching; however, for the transformer-specific tape, due to the single-sided stickiness, the design is complicated and difficult. There is no technology that can realize the automatic switching of the single-sided sticky tape, so it is impossible to solve the above-mentioned shortcomings of manual replacement of the prior art.

[0004] Therefore, in view of the existing problems in the prior art, it is urgently necessary to provide an automatic switching device for a single-sided adhesive tape and an automatic winding machine for a transformer. Summary of the invention

[0005] The utility model aims to avoid the shortcomings of the prior art and provide an automatic switching device for single-sided adhesive tape.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] Provided is a single-sided adhesive tape automatic switching device, comprising a supporting device, two film roll assemblies, a rotating drive device and a pressure wheel assembly.

[0008] Two film assemblies are placed on the supporting device, the film assembly located at the standby position is the standby film assembly, and the film assembly located at the in-use position is the in-use film assembly, and the in-use film assembly can be clamped and driven to rotate by the rotating driving device;

[0009] The pressure wheel assembly includes a spare rubber roller, a No. 1 cylinder, a pressure wheel and a No. 2 cylinder. The No. 1 cylinder drives the spare rubber roller to rise and fall, and the No. 2 cylinder drives the pressure wheel to rise and fall. The starting end of the tape of the spare film assembly is adhered to the spare rubber roller. When switching films, the pressure wheel presses down the tape of the spare film assembly so that the starting end of the spare film assembly is separated from the spare rubber roller and pressed against the tail end of the film assembly in use for bonding and connection.

[0010] A single-sided adhesive tape automatic switching device, the film assembly includes a chuck, an adhesive ring and the tape wound on the adhesive ring, the adhesive ring is provided with an adhesive ring light-transmitting hole, the chuck is provided with a fixed disk light-transmitting hole and a light-emitting diode for receiving light transmitted from the fixed disk light-transmitting hole, and a sensor is also provided, the centers of the adhesive ring light-transmitting hole and the fixed disk light-transmitting hole are located on the straight line where the light received by the sensor is located.

[0011] A single-sided adhesive tape automatic switching device, the supporting device comprises two supporting plates, a bottom plate and two groups of limit assemblies, the upper surfaces of the two supporting plates are inclined downward from the standby position of the film assembly toward the film assembly in-use position to form a chuck sliding surface; the bottom of the bottom plate is provided with a guide groove in the longitudinal direction; shaft members are provided on both sides of the film assembly, the shaft members are placed on the chuck sliding surface and are limited in movement by the limit assemblies, and the lower part of the film assembly is limited in the guide groove;

[0012] The limiting assembly includes a groove, a lifting block and a lifting drive cylinder. The lifting block is embedded in the groove and lifted and lowered by the lifting drive. Among them, the lifting blocks on both sides of the limiting assembly in the use position are made of conductive materials and are respectively connected to the positive and negative poles of the power supply.

[0013] Preferably, the lifting blocks on both sides of the limiting assembly in the use position are copper blocks.

[0014] Preferably, the rotary drive device includes a rotary drive motor, a docking piece, a movable bracket and a clutch drive device, the two movable brackets are located on both sides of the film assembly in use and are driven by the clutch drive device to move relatively closer or away from each other; the rotary drive motor is installed on the movable bracket and drives the docking piece to rotate, and when the film assembly in use needs to be rotated, the clutch drive device drives the two movable brackets to move relatively closer so that the docking piece docks with the shaft of the film assembly in use and drives the shaft to rotate when rotating.

[0015] Preferably, the clutch driving device is a clamping cylinder or a bidirectional cylinder.

[0016] Preferably, the clutch-disconnector driving device is connected to the movable bracket via a clutch-disconnector.

[0017] Preferably, the docking member comprises a docking sleeve, an anti-skid triangular rod, an auxiliary connection spring and a sleeve with a hole. The end of the sleeve with a hole facing the film assembly is provided with an auxiliary rotation head, and the other end has a triangular hole. One end of the anti-skid triangular rod is fixedly installed at the bottom of the inner hole of the docking sleeve, and the other end extends into the triangular hole of the sleeve with a hole. The auxiliary connection spring is sleeved on the anti-skid triangular rod, and the two ends are respectively fixedly connected to the bottom of the inner hole of the sleeve with a hole and the docking sleeve.

[0018] The shaft member includes a conductive shaft and a center shaft. The center shaft is fixedly connected to the chuck. The conductive shaft is installed on the center shaft and faces one end of the perforated sleeve, and is provided with a slotted groove that cooperates with the rotation-assisting slotted head. The conductive shaft located at the end of the center shaft is made of conductive material, and the positive and negative poles of the light-emitting diode are respectively conductively connected to the conductive shafts on both sides of the chuck. When the lifting block rises, the conductive shafts on both sides of the chuck are in close contact with the lifting block under the action of the gravity of the chuck, and the positive and negative poles of the light-emitting diode are respectively connected to the positive and negative poles of the power supply.

[0019] Preferably, the conductive shaft is a copper shaft.

[0020] Preferably, a buffer device is also provided, which includes a buffer motor, a screw rod, a connecting block with screw holes and a tension rod. A slider is fixedly connected to the bottom of the connecting block with screw holes, and the slider is slidably arranged on a guide rail. The screw rod passes through the screw holes of the connecting block with screw holes and is driven to rotate by the buffer motor so that the connecting block with screw holes moves along the guide rail; the tension rod is installed on the connecting block with screw holes and is located in front of the film assembly in use.

[0021] Beneficial effects of the utility model:

[0022] (1) The utility model is a single-sided adhesive tape automatic switching device comprising a supporting device, two film assemblies, a rotating drive device and a pressure wheel assembly. The two film assemblies are placed on the supporting device. The film assembly located at the standby position is the standby film assembly, and the film assembly located at the active position is the active film assembly. The active film assembly can be clamped and driven to rotate by the rotating drive device. Compared with the prior art, the single-sided adhesive tape can be automatically switched without manual replacement, which is beneficial to ensuring product quality, improving work efficiency and reducing accident risks.

[0023] (2) The film assembly of the utility model includes a chuck, a rubber ring and a tape wound on the rubber ring. The rubber ring is provided with a rubber ring light-transmitting hole, the chuck is provided with a fixed disk light-transmitting hole and a light-emitting diode for receiving light transmitted from the fixed disk light-transmitting hole, and a sensor is also provided. The centers of the rubber ring light-transmitting hole and the fixed disk light-transmitting hole are located on the straight line where the light received by the sensor is located. The rubber ring light-transmitting hole is directly opposite to the fixed disk light-transmitting hole, the light-emitting diode is installed in the fixed disk light-transmitting hole, and the sensor receives light. In this way, it can sense in advance that the tape is about to run out and prepare for automatic tape replacement.

[0024] (3) The shaft includes a conductive shaft and a central shaft. The central shaft is fixed to the chuck. The conductive shaft is installed on the central shaft and is provided with a slotted groove that matches the rotation-assisting slotted head at one end facing the perforated sleeve. The end of the central shaft is made of conductive material, and the positive and negative electrodes of the light-emitting diode are respectively electrically connected to the ends of the central shaft on both sides of the chuck. The end of the central shaft is made of conductive material, and the lifting block is also made of conductive material and connected to a power source. When the central shaft of the chuck contacts the lifting block, the light-emitting diode is connected to the power source and emits light. It will not lose power and emit light due to the rotation of the tape chuck and the central shaft, which solves the problem that the tape is too thin (0.025 mm) and it is difficult to accurately distinguish whether the tape is about to run out through the sensor. When the tape is not used up, the tape covers the round hole and the sensor emits a low level. When the last circle of the tape is about to be used up, the last circle uncovers the round hole. When the round hole is not blocked by the tape, the sensor receives the light of the LED and emits a high level. At this time, there is still a section of the tape stuck on the rubber ring. The end of the tape still maintains the tension on the tape to prevent the upper line from being loose. At the same time, the information that the tape is running out is promptly sent to the program control command center or PLC so that the subsequent automatic tape switching action will be carried out.

[0025] (4) The support device includes two support plates, a bottom plate and two sets of limiter assemblies. The upper surfaces of the two support plates are inclined downward from the standby position of the film assembly toward the film assembly in-use position to form a chuck sliding surface, so that the film assembly can automatically slide down by its own weight through the lifting and lowering of the limiter assemblies. The bottom of the bottom plate is provided with a guide groove along the longitudinal direction, so as to prevent the film assembly from swinging left and right when sliding and rolling.

[0026] (5) A buffer device is also provided to keep the tape in proper tension at all times, especially during the automatic switching of the tape. When the chuck in use rotates counterclockwise, the tension rod moves forward in coordination, and when it rotates clockwise, the tension rod moves backward. During the automatic switching process, the tape in use from the chuck in use to the tension rod is always in a straightened state in a timely manner to prevent the tape from being too tight and deformed or too loose, resulting in wrinkles and adhesions, thereby ensuring the quality of the transformer rubber coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0028] Figure 1 It is a structural schematic diagram of an embodiment of the single-sided adhesive tape automatic switching device of the utility model.

[0029] Figure 2 It is a three-dimensional schematic diagram of the film assembly structure of an embodiment of the utility model.

[0030] Figure 3 It is a schematic diagram of the chuck structure of an embodiment of the utility model.

[0031] Figure 4 It is another structural schematic diagram of a film assembly of an embodiment of the utility model.

[0032] Figure 5 It is a plan view schematic diagram of the film assembly structure of an embodiment of the utility model.

[0033] Figure 6 The utility model is a schematic diagram of the structure of a docking piece of an automatic switching device for single-sided adhesive tape in one embodiment.

[0034] Figure 7 The utility model is a schematic diagram of the entire switching process of the automatic switching device for single-sided adhesive tape in one embodiment.

[0035] Figure 8 A schematic diagram of the single-sided adhesive tape automatic switching device of the utility model being applied to an automatic transformer winding machine.

[0036] Fig. 9 Another schematic diagram of the single-sided adhesive tape automatic switching device of the utility model being applied to an automatic transformer winding machine.

[0037] Figures 1 to 9 Included are:

[0038] 1. Single-sided adhesive tape automatic switching device:

[0039] 1-1 supporting device: 1-101 supporting plate, 1-102 chuck sliding surface, 1-103 bottom plate, 1-104 guide groove;

[0040] 1-2 film assembly: 1-201 chuck, 1-202 rubber ring, 1-203 tape, 1-204 anti-slip rod, 1-205 spring, 1-206 rubber ring light hole, 1-207 fixed plate light hole, 1-208 light emitting diode, 1-209 sensor, 1-210 shaft, 1-211 conductive shaft, 1-212 center shaft, 1-213 docking piece, 1-214 spin-assisting slot, 1-215 slot; 1-21 spare film assembly, 1-22 film assembly in use;

[0041] 1-3 docking parts: 1-301 docking sleeve, 1-302 anti-slip triangle rod, 1-303 auxiliary spring, 1-304 sleeve with hole;

[0042] Limiting components: 1-401 groove, 1-402 lifting block, 1-403 lifting driving gas;

[0043] Pressing wheel assembly: 1-501 rubber roller, 1-502 No. 1 cylinder, 1-503 pressing wheel, 1-504 No. 2 cylinder;

[0044] Rotation drive device: 1-601 rotation drive motor, 1-602 mobile bracket, 1-603 clutch drive device, 1-604 clutch connector;

[0045] Buffer device: 1-701 buffer motor, 1-702 lead screw, 1-703 connection block with screw hole, 1-704 tension rod, 1-705 slider, 1-706 guide rail;

[0046] 2 Automatic winding device: 2-1 winding fixture, 2-2 guide needle rotating device, 2-3 guide needle, 2-4 finishing stitch, 2-5 wire clamping device, 2-6 clamp mechanism, 2-7 skeleton.

[0047] 3 Auxiliary devices: 3-1 pay-off rack, 3-2 bobbin, 3-3 wire cover, 3-4 tensioner, 3-5 thread collector.

[0048] 4 packs of retaining wall tape devices: 4 packs of retaining wall tape devices, 4-1 retaining wall tape, 4-2 glue pulley, 4-3 retaining wall rotation sensor, 4-4 retaining wall cutter, 4-5 glue pressing block, 4-6 tape clip.

[0049] Loading and unloading rack driving device: 5-1 loading and unloading rack driving device, 5-2 loading and unloading rack.

[0050] 6-wire wrapped tape mechanism: 6-1 tape holder, 6-2 card slot, 6-3 lower pulley, 6-4 rotation sensor, 6-5 upper pulley, 6-6 top pulley, 6-7 top pressure plate, 6-8 glue clamping device. DETAILED DESCRIPTION

[0051] The utility model is further described in conjunction with the following embodiments. Example 1

[0052] See also Figures 1 to 7 The single-sided adhesive tape automatic switching device 1 of this embodiment includes a supporting device 1-1, two film assemblies 1-2, a rotating driving device and a pressure wheel assembly 1-5. The two film assemblies 1-2 are placed on the supporting device 1-1. The film assembly 1-2 located in the standby position is a standby film assembly 1-21, and the film assembly 1-2 located in the active position is an active film assembly 1-22. The active film assembly 1-22 can be clamped and driven to rotate by the rotating driving device.

[0053] In this embodiment, the supporting device includes two supporting plates 1-101, a bottom plate 1-103 and two sets of limiting assemblies. The upper surfaces of the two supporting plates 1-101 are inclined downward from the standby position of the film assembly 1-2 toward the active position of the film assembly 1-2 to form a sliding surface 1-102 of the chuck 1-201; a guide groove 1-104 is provided longitudinally at the bottom of the bottom plate 1-103.

[0054] Each set of film components 1-2 includes a chuck 1-201, a rubber ring 1-202 and a tape 1-203 wrapped around the rubber ring 1-202. The chuck 1-201 is provided with three anti-slip rods 1-204 along the circumferential direction to overcome the downward pressure of the spring 1-205. The light-transmitting hole 1-206 of the rubber ring of the tape is aligned with the circular hole of the chuck 1-201, and then the whole roll of tape is loaded into the chuck 1-201. The spring 1-205 always maintains a strong elastic force on the anti-slip rod 1-204, which is beneficial to increase the static friction between the tape and the chuck 1-201, prevent the tape and the chuck 1-201 from sliding relative to each other during the entire working process, and prevent the tape and the circular hole of the chuck 1-201 from being misaligned during the working process. At the same time, the adhesive ring 1-202 is provided with an adhesive ring light-transmitting hole 1-206, the chuck 1-201 is provided with a fixed disk light-transmitting hole 1-207 and a light-emitting diode 1-208 for receiving light transmitted from the fixed disk light-transmitting hole 1-207, and a sensor 1-209 is also provided. The centers of the adhesive ring light-transmitting hole 1-206 and the fixed disk light-transmitting hole 1-207 are located on the straight line where the light received by the sensor 1-209 is located. Sensor 1-209 is installed in front of the used tape chuck 1-201 and below the spare tape chuck 1-201, and points to the light-emitting diode 1-208. The end of the tape is located in front of the light-transmitting hole 1-206 of the adhesive ring. When the tape is not used up, the tape covers the round hole, and the sensor 1-209 emits a low level. When the last circle of the tape is about to be used up, the last circle begins to uncover the round hole. When the round hole is not covered by the tape, the sensor 1-209 receives the light of the light-emitting diode 1-208 and emits a high level. At this time, there is still a section of the tape stuck on the adhesive ring 1-202. The end of the tape still maintains the tension on the tape to prevent the tape on the upper line from being loose. At the same time, it promptly sends information to the program control command center or PLC that the tape is running out.

[0055] Each film assembly 1-2 is provided with shafts 1-210 on both sides of the chuck 1-201. The shafts 1-210 are placed on the sliding surface 1-102 of the chuck 1-201 and are limited in movement by the limit assembly. The lower part of the film assembly 1-2 is limited in the guide groove 1-104. The guide groove 1-104 and the width of the two chucks 1-201 retain a gap of 0.5-1mm, so that the chuck 1-201 does not fall or tilt when sliding downward, and plays a guiding role. The limit assembly includes a groove 1-401, a lifting block 1-402 and a lifting drive gas cylinder 1-403. The lifting block 1-402 is embedded in the groove 1-401 and is lifted and lowered by the lifting drive.

[0056] The pressure wheel assembly 1-5 of the present embodiment includes a spare rubber roller 1-501, a No. 1 cylinder 1-502, a pressure wheel 1-503 and a No. 2 cylinder 1-504. The No. 1 cylinder 1-502 drives the spare rubber roller 1-501 to rise and fall, and the No. 2 cylinder 1-504 drives the pressure wheel 1-503 to rise and fall. The starting end of the tape of the spare film assembly 1-21 is adhered to the spare rubber roller 1-501. When switching the film, the pressure wheel 1-503 presses down the tape of the spare film assembly 1-21 so that the starting end of the spare film assembly 1-21 is separated from the spare rubber roller 1-501 and pressed tightly to the tail end of the film assembly 1-22 in use for bonding connection. A spring 1-205 is provided on one side of the rubber preparation roller 1-501 to increase friction, thereby preventing the rubber preparation roller 1-501 from being too flexible or unstable in clockwise or counterclockwise rotation, thereby avoiding wrinkles at the beginning of the spare tape, which is beneficial for the starting tape of the spare tape to remain taut and straight. During operation, the gathering and dispersing driving device 1-603 gathers toward the middle, driving the gathering and dispersing connecting piece 1-604, the movable bracket 1-602 and the rotating driving motor 1-601 to close toward the middle, and the docking piece 1-3 completes the docking of the axis of the rotating driving motor 1-601 with the axis of the chuck in use; the standby rubber roller 1-501 descends, so that the starting tape of the standby tape is attached to the top of the rear tape in use, and the pressure wheel 1-503 descends and presses on the two layers of tape. The component in use 1-22 rotates counterclockwise under the drive of the rotating driving motor 1-601. Since the standby component 1-21 has no power traction and does not rotate in place, the pulled-out standby tape changes from a straight state to a slightly downward bend; the component in use 1-22 rotates counterclockwise, driving the pressure wheel 1-503 to rotate clockwise synchronously, and the tension rod 1-704 of the buffer device 1-7 moves forward to prevent the front end tape from being too tight and release the rubber. The tension of the belt; the pressure wheel 1-503 rotates clockwise in place, pressing and rotating. During the forward movement of the spare tape, the spare rubber roller 1-501 is pulled to rotate counterclockwise, releasing the tape attached to it while rotating. When the released spare tape head is completely attached to the tail tape of the used tape, the spare rubber roller 1-501 rises, and the rotary drive motor 1-601 changes to clockwise rotation. At the same time, the tension rod 1-704 pulls the used tape backward, so that the used tape between the used component 1-22 and the tension rod 1-704 remains in a straight state to avoid bending and wrinkling. The rotary drive motor 1-601 drives the used chuck 1-201 and the spare chuck 1-201 to rotate clockwise, and the pressure wheel 1-503 presses the tail of the used tape at the rear tightly against the spare tape. The front and rear tapes are automatically tightly connected head and tail. At this time, the pressure wheel 1-503 rises.

[0057] The rotary drive device includes a rotary drive motor 1-601, a docking piece 1-3, a mobile bracket 1-602 and a gathering and dispersing drive device 1-603. The two mobile brackets 1-602 are located on both sides of the film assembly 1-22 in use and are driven by the gathering and dispersing drive device 1-603 to move relatively closer or farther away from each other. The rotary drive motor 1-601 is installed on a mobile bracket 1-602 and drives the docking piece 1-3 to rotate. When the film assembly 1-22 in use needs to be rotated, the gathering and dispersing drive device 1-603 drives the two mobile brackets 1-602 to move relatively closer so that the docking piece 1-3 docks with the shaft 1-210 of the film assembly 1-22 in use and drives the shaft 1-210 to rotate when rotating. Among them, the gathering and dispersing drive device 1-603 can be a clamping cylinder or a bidirectional cylinder, etc. When the gathering and dispersing drive device 1-603 is a clamping cylinder, the gathering and dispersing drive device is connected to the mobile bracket 1-602 through a gathering and dispersing connecting piece 1-604.

[0058] The shaft member 1-210 includes a conductive shaft 1-211 and a central shaft 1-212. The central shaft 1-212 is fixedly connected to the chuck 1-201. The conductive shaft 1-211 is installed on the central shaft 1-212 and is provided with a slot 1-215 that cooperates with the spin-assisting slot 1-214 at one end facing the perforated sleeve 1-304. The end of the central shaft 1-212 is made of conductive material, and the positive and negative electrodes of the light-emitting diode 1-208 are electrically connected to the ends of the central shaft 1-212 on both sides of the chuck 1-201. The conductive shaft of this embodiment is a copper shaft.

[0059] In order to ensure that the adhesive tape always maintains a certain tension and does not relax, the automatic switching device 1 for single-sided adhesive tape of this embodiment is also provided with a buffer device 1-7, which includes a buffer motor 1-701, a screw rod 1-702, a connecting block 1-703 with screw holes and a tension rod 1-704. A slider 1-705 is fixed to the bottom of the connecting block 1-703 with screw holes, and the slider 1-705 is slidably arranged on the guide rail 1-706. The screw rod 1-702 passes through the screw hole of the connecting block 1-703 with screw holes and is driven to rotate by the buffer motor 1-701 so that the connecting block 1-703 with screw holes moves along the guide rail 1-706; the tension rod 1-704 is installed on the connecting block 1-703 with screw holes and is located in front of the film assembly 1-22 in use. When the tape needs to be replaced, the buffer motor 1-701 drives the screw rod 1-702 to rotate and the screw hole connecting block 1-703 moves at a low speed. The screw hole connecting block 1-703 drives the tension rod 1-704 to move forward slowly. In order to make the tape move better, the tension rod 1-704 is provided with a roller. Under the action of the buffer motor 1-701, the tension rod 1-704 and the chuck 1-201 in use slowly approach each other. At the same time, the spare rubber roller 1-501 moves down to press the protruding tape of the used tape, and then the cylinder piston rod of the pressure wheel 1-503 extends downward to drive the pressure wheel 1-503 to press the protruding tape of the spare tape onto the used tape.

[0060] The main process of replacing the tape in the single-sided adhesive tape automatic switching device 1 of this embodiment is as follows:

[0061] When the tape on the in-use chuck 1-201 has not been used up, the worker aligns the light-transmitting hole 1-206 of the rubber ring of the spare tape with the light-transmitting hole 1-207 of the fixed disk of the spare chuck 1-201 in advance, and installs the spare tape on the spare chuck 1-201. The left and right sides of the central axis 1-212 of the spare chuck 1-201 are respectively placed on the supporting device 1-1 and the movement is restricted by the limit assembly. The worker pulls the starting end of the spare tape backwards and sticks it on the spare rubber roller 1-501. The tape is straightened and tightened. The anti-slip spring 1-205 on the left side of the spare rubber roller 1-501 increases the static friction to prevent the spare rubber roller 1-501 from reversing. Rotation causes the tape to loosen, and it is always kept in a straightened and taut state. This is the process of preparing materials in advance; when the last section of the tape in use is stuck to the white rubber ring 1-202, the tape still has a pulling tension on the upper tape. When the chuck 1-201 in use continues to rotate clockwise under the pull of the upper wire wrapping mechanism, when the tape uncovers the rubber ring light hole 1-206 of the rubber ring 1-202 of the film assembly 1-22 in use, the light-emitting diode 1-208 in the light-emitting hole 1-207 of the fixed disk opposite to the rubber ring light hole 1-206 is no longer blocked by the tape, and the moment the sensor 1-209 directly shines on the light-emitting diode 1-209, it sends a signal to the control center. High-level signal starts the automatic tape replacement action: the buffer motor 1-701 drives the screw rod 1-702 to rotate, and the connection block with screw holes 1-703 drives the tension rod 1-704 to move forward slowly and approach the chuck 1-201 in use slowly. At the same time, the piston rod of the No. 1 cylinder 1-502 extends downward to drive the spare rubber roller 1-501 to move downward to press the tape extended from the used tape. After pressing, the anti-skid spring 1-205 on the left increases the static friction to prevent the spare rubber roller 1-501 from rotating in the opposite direction and causing the tape to loosen, so that the tape extended from the spare tape is in a straightened state, and the piston rod of the pressure roller 1-503 cylinder extends downward to drive the pressure roller 1-503 is pressed tightly on the top of the used tape, and the pressure wheel 1-503, the used chuck 1-201 and the used tape form static friction. After being pressed into place, the gathering and dispersing driving device 1-603 drives the movable bracket 1-602 to move toward the middle to dock the docking piece 1-3 with the shaft 1-210 of the used film assembly 1-22. After docking, the used chuck 1-201 and the used tape rotate counterclockwise following the rotating driving motor 1-601. At this time, since the spare tape chuck 1-201 does not rotate, as the used assembly 1-22 rotates counterclockwise, the front end of the tape extended from the spare tape turns from a tensioned state to a downward relaxed state, but they do not stick to each other. Figure 3The starting end of the spare tape is bonded to the tail end of the current tape, and the current tape follows the current chuck 1-201 to rotate counterclockwise under the drive of the rotating drive motor 1-601. When the pressure wheel 1-503 presses the current tape and the current chuck 1-201, static friction is generated. The current chuck 1-201 serves as the driving wheel, and under the action of static friction, it drives the pressure wheel 1-503 to rotate clockwise, pressing and rotating clockwise. The head end of the spare tape is attached to the tail end of the current tape, and the two are pressed between the pressure wheel 1-503 and the current tape. The two tapes are moved forward between the chuck 1-201, and the spare tape attached to the spare tape roller 1-501 is also moved forward. At the same time, the spare tape roller 1-501 is pulled counterclockwise to separate from the spare tape roller 1-501 while rotating. When it is completely separated, the piston rod of the No. 1 cylinder 1-502 retracts upward to drive the spare tape roller 1-501 to reset upward, and the rotary drive motor 1-601 continues to rotate until the starting end of the spare tape is firmly attached to the ending end of the used tape. The rotary drive motor 1-601 changes the direction of rotation, driving The in-use component 1-22 rotates clockwise, pulling the spare tape backward, so that the spare tape between the in-use component 1-22 and the spare component 1-21 bends downward, loosens, turns to straighten and tighten, until the spare component 1-21 can be pulled to follow the in-use component 1-22 to rotate synchronously clockwise, and at the same time, the buffer motor 1-701 drives the tension rod 1-704 to move backward to keep the tape straightened and tightened. When the in-use tape is completely separated from the in-use chuck 1-201, the lifting block 1-402 in the in-use position descends, and its upper surface is aligned with the sliding surface, and the in-use chuck 1- 201 slides backward away from the device under the guidance of the middle guide groove 1-104 and the action of its own gravity. The gathering and dispersing driving device 1-603 drives the mobile bracket 1-602 to spread out to both ends, so that the docking member 1-3 is completely separated from the shaft member 1-210 of the film assembly 1-22 in use. The lifting block 1-402 in use rises first, and the lifting block 1-402 in the standby position falls later. The spare chuck 1-201 and the spare tape slide down along the sliding surface and are blocked by the lifting block 1-402 in the used position, becoming the chuck 1-201 in use and the tape in use. At the same time, the buffer motor 1-701 drives the tension rod 1-704 to continue to move backward, keeping the tape with the head and tail docked in a straight state, and the lifting block 1-402 in the standby position rises and resets to prepare for the next working cycle. The operator then puts a new spare chuck 1-201 and spare tape in the upper front of the lifting block 1-402 in the standby position according to the method mentioned above, and repeats this cycle. The single-sided adhesive tape automatic switching device 1 and the automatic winding device 2 of this embodiment work independently and in parallel without interfering with each other.

[0062] The transformer automatic winding machine of this embodiment includes an automatic winding device 2, an auxiliary device 3, a retaining wall tape device, a loading and unloading rack driving device, a wire wrapping tape mechanism and the single-sided adhesive tape automatic switching device 1 as described above. The auxiliary device 3 is located behind the automatic winding device 2 and is used to supply wire to the automatic winding device 2. The retaining wall tape device is located above the winding fixture of the automatic winding device 2 to complete the retaining wall tape wrapping on both sides of the skeleton or wire winding area (the retaining wall tapes are respectively wrapped on both sides of the skeleton winding area and close to the side walls, and all windings must be wound between the retaining wall tapes on both sides), and the loading and unloading rack driving device is located in front of the winding fixture of the automatic winding device 2 to realize loading and unloading; the wire wrapping tape mechanism is located below the winding fixture of the automatic winding device 2 and is used to wrap the sensor after winding; the tape automatic switching device is located below the wire wrapping tape mechanism to provide tape to the wire wrapping tape mechanism.

[0063] See also Figure 8 and 9In the middle of the front end of the automatic winding machine for the transformer of this embodiment, there are six winding clamps 2-1 (it can also be other numbers, and the number of tensioners 3-4 at the back is equal to the number of winding clamps 2-1), and the rear end pay-off frame 3-1 has six tensioners 3-4. At the front end, there is a retaining wall tape device just above the winding clamp 2-1. This device includes six sets of retaining wall tape mechanisms, which correspond to the six winding clamps 2-1 respectively; just above and in front of the winding clamp 2-1, there is a guide needle 2-3 rotating device 2-2, in which there are six guide needles 2-3, which can rotate 90 degrees and correspond to the six winding clamps 2-1 respectively; in front of the guide needle 2-3 rotating device 2-2, there is an upper and lower material rack driving device, and the upper and lower material racks have six unloading positions and six loading positions, which are arranged adjacent to each other alternately; a wire clamping device 2-5 is provided at a slightly lower position behind the winding clamp 2-1, which has six clamps Mechanism 2-6 also corresponds to the six winding clamps 2-1 respectively, among which the clamping device 2-5 can be opened, closed, rotated and reset synchronously; the front end of the clamping mechanism 2-6 is cylindrical, and can be inserted into the winding clamp 2-1 with the coaxial center line for quick installation and fixation, and the rear ends of the six clamping mechanisms 2-6 are interlocked with synchronous belts to achieve synchronous rotation in the same direction and at the same speed under the drive of the servo motor; there are six bobbins 3-2 on the pay-off frame 3-1, and the wire of each bobbin 3-2 passes through its own tensioner 3-4, porcelain eye, guide needle 2-3 in turn, and finally ends in its own clamping mechanism; when winding, first put the skeleton 2-7 on the loading position of the upper and lower material racks 5-2 in the correct direction, the upper and lower material rack driving device first inserts the skeleton 2-7 at the loading position into the winding clamp 2-1, and the retaining wall tape device 4 wraps two retaining wall tapes on the two edges of the winding area of ​​the skeleton 2-7 respectively, close to the side wall. When wrapping the retaining wall tape, fix the retaining wall tape 4-1 under the bracket, and the head end of the retaining wall tape goes from top to top, passes through the glue pulley 4-2, the retaining wall rotation sensor 4-3, and the glue pressing block 4-5. The head end of the retaining wall tape is clamped in the tape clamp 4-6, and the retaining wall tape cutter 4-4 is located between the glue pressing block 4-5 and the tape clamp 4-6. When the skeleton 2-7 needs to be wrapped with the retaining wall tape, the tape clamp 4-6 clamps the head end of the retaining wall tape and pulls it to the right. The two pulled out retaining wall tapes are respectively attached to both sides of the winding groove of the skeleton 2-7. After wrapping the retaining wall tape, the retaining wall tape cutter 4-4 cuts the retaining wall tape, and the entire retaining wall tape wrapping device 4 leaves the skeleton upward to start the next step: winding.

[0064] The guide needle 2-3 driving device approaches the frame 2-7 and winds the thread around the starting stitch of the frame 2-7. The thread clamping device 2-5 pulls the thread end off or the pneumatic shears 2-8 cuts the thread end off. The guide needle 2-3 driving device moves backward and leaves the frame 2-7. The winding clamp 2-1 rotates to wind the thread. After winding the specified number of turns, while winding the thread, the thread clamping device 2-5 retreats and then rotates downward, repeatedly opening and closing the clamp three times to throw off the thread end. After the winding clamp has finished winding the thread, the guide needle 2-3 winds the thread around the ending stitch 2-4 of the frame 2-7. The thread clamping device 2-5 opens the clamp, the guide needle 2-3 pulls the thread through the opened clamp, the thread clamping device 2-5 closes the clamp to clamp the thread, and the thread clamping device 2-5 moves left to break the thread end on the finishing stitch 2-4. While winding the wire, the employee puts six skeletons 2-7 on the loading position of the upper and lower material racks 5-2 to prepare for the next winding cycle. After the wire is wound, the wire wrapping device moves upward, and after the tape has wrapped the specified number of circles, the wire wrapping mechanism moves downward. After the skeleton 2-7 of the previous cycle is wound, the unloading position of the upper and lower material racks pulls out the wound skeleton 2-7 forward and unloads it, then moves right to insert the six loading positions of the skeletons 2-7 into the six winding fixtures 2-1 respectively, the upper and lower material racks move downward, extend forward, and then move left to reset. After the upper and lower material racks are reset away from the winding fixtures, the winding of the next working cycle is started. The whole process is roughly as follows: insert the skeleton 2-7 into the winding fixture 2-1----wrap the retaining wall tape----the guide needle 2-3 wraps the wire around the starting pin----the wire clamping device 2-5 pulls off the starting thread head----wind the wire----the guide needle 2-3 wraps the wire around the ending pin 2-4----the guide needle 2-3 sends the wire into the wire clamping device 2-5 and clamps the wire----the wire clamping device 2-5 pulls off the ending thread head----wrap the wire with tape----unload the skeleton 2-7 with the wire wound-----the skeleton 2-7 is inserted into the winding fixture 2-1------start the next working cycle.

[0065] The process of wrapping the wire and wrapping the tape mechanism is as follows: the center of the tape of the wrapping wire and wrapping tape mechanism has a rubber ring 1-202, the rubber ring 1-202 is installed in the tape chuck 1-201, the central axis 1-212 of the chuck 1-201 extends out from both sides of the chuck 1-201, and the two ends of the central axis 1-212 are placed in the left and right slots of the tape holder, and the tape passes through the lower pulley 6-3, the rotation sensor 1-209, the upper pulley 6-5, the top pulley 6-6, the top pressure plate 6-7 and the glue clamping device 6-8. When wrapping the wire and wrapping the tape, The clamp of the glue clamping device 6-8 opens and moves to the right, the clamp clamps the tape head, the top pulley moves down, the top pressure plate and the top pulley release the tape head, the clamp of the glue clamping device 6-8 clamps the tape head and moves to the left, the tape head is pulled to the left by the glue clamping device 6-8, the sticky side of the tape faces upward, the entire tape wrapping mechanism moves upward, the tape, the glue ring 1-202 and the tape chuck 1-201 rotate around the central axis 1-212, and the central axis 1-212 rotates in the slot 6-2 of the tape holder 6-1. , the whole roll of tape is released upward; the entire wire wrapping tape mechanism rises and sticks to the wire package that has just been wound, the roller 3-408 under the wire package rises to press the tape and the wire package, the clamping device 6-8 is loosened, the winding clamp drives the wire package to rotate counterclockwise first, and the wire package rotates when the roller 3-408 is pressed against the wire package, pressing the tape head against the wire package, and the winding clamp drives the wire package to rotate clockwise-counterclockwise-clockwise repeatedly at an angle of 30 degrees three times to confirm that the tape head is completely pressed against the wire package. Finally, roller 3-408 descends, and the winding clamp 2-1 drives the wire package to rotate three times clockwise. The tape wraps the wire package three times, and the top pulley rises to press the tape head and the top pressure plate. The tape head is clamped by the top pulley and the top pressure plate, and the cutter rises to cut off the closing tape of the wire package. Roller 3-408 rises. When roller 3-408 presses the wire package, the winding clamp 2-1 drives the wire package to rotate 30 degrees clockwise and counterclockwise three times. After the closing tape is close to the wire package, roller 3-408 resets downward. Example 2

[0066] The main technical solution of this embodiment is basically the same as that of Embodiment 1. For features not explained in this embodiment, the explanation in Embodiment 1 is adopted and will not be repeated here.

[0067] In this embodiment, the docking component 1-3 includes a docking sleeve 1-301, an anti-slip triangular rod 1-302, an auxiliary connection spring 1-303 and a perforated sleeve 1-304. The perforated sleeve 1-304 is provided with an auxiliary rotation head 1-214 at one end facing the film assembly 1-2, and has a triangular hole at the other end. One end of the anti-slip triangular rod 1-302 is fixedly installed at the bottom of the inner hole of the docking sleeve 1-301, and the other end extends to the inside of the triangular hole of the perforated sleeve 1-304. The auxiliary connection spring 1-303 is sleeved on the anti-slip triangular rod 1-302, and the two ends are respectively fixedly connected to the bottom of the inner hole of the perforated sleeve 1-304 and the docking sleeve 1-301.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit the scope of protection of the claims. A person skilled in the art should understand and modify or replace the technical solution of the utility model with the preferred embodiments, but the technical solution of the utility model is substantially the same and within the scope of protection.

Claims

1. An automatic switching device for single-sided adhesive tape, characterized in that: It includes a supporting device, two film assemblies, a rotating drive device and a pressure wheel assembly. Two film assemblies are placed on the supporting device, the film assembly located at the standby position is the standby film assembly, and the film assembly located at the in-use position is the in-use film assembly, and the in-use film assembly can be clamped and driven to rotate by the rotation drive device; The pressure wheel assembly includes a spare rubber roller, a No. 1 cylinder, a pressure wheel and a No. 2 cylinder. The No. 1 cylinder drives the spare rubber roller to rise and fall, and the No. 2 cylinder drives the pressure wheel to rise and fall. The starting end of the tape of the spare film assembly is adhered to the spare rubber roller. When switching films, the pressure wheel presses down the tape of the spare film assembly so that the starting end of the spare film assembly is separated from the spare rubber roller and pressed tightly to the tail end of the film assembly in use for bonding and connection.

2. The single-sided adhesive tape automatic switching device according to claim 1, characterized in that: The film assembly includes a chuck, a rubber ring and a tape wrapped around the rubber ring, the rubber ring is provided with a rubber ring light-transmitting hole, the chuck is provided with a fixed disk light-transmitting hole and a light-emitting diode for receiving light transmitted from the fixed disk light-transmitting hole, and a sensor is also provided, and the centers of the rubber ring light-transmitting hole and the fixed disk light-transmitting hole are located on a straight line where the light received by the sensor is located.

3. The single-sided adhesive tape automatic switching device according to claim 1, characterized in that: The support device comprises two support plates, a bottom plate and two groups of limit assemblies. The upper surfaces of the two support plates are inclined downward from the standby position of the film assembly toward the in-use position of the film assembly to form a chuck sliding surface. The bottom of the bottom plate is provided with a guide groove in the longitudinal direction. Both sides of the film assembly are provided with shafts, which are placed on the chuck sliding surface and are limited in movement by the limit assemblies. The lower part of the film assembly is limited in the guide groove. The limiting assembly includes a groove, a lifting block and a lifting drive cylinder, the lifting block is embedded in the groove and lifted and lowered by the lifting drive; wherein the lifting blocks on both sides of the limiting assembly in the use position are made of conductive materials and are respectively connected to the positive and negative poles of the power supply.

4. The single-sided adhesive tape automatic switching device according to claim 3, characterized in that: The lifting blocks on both sides of the limit assembly in the used position are copper blocks.

5. The single-sided adhesive tape automatic switching device according to claim 3, characterized in that: The rotary drive device includes a rotary drive motor, a docking piece, a movable bracket and a clutch drive device. The two movable brackets are located on both sides of the film assembly in use and are driven by the clutch drive device to move relatively closer or farther away from each other. The rotary drive motor is installed on the movable bracket and drives the docking piece to rotate. When the film assembly in use needs to be rotated, the clutch drive device drives the two movable brackets to move relatively closer so that the docking piece docks with the shaft of the film assembly in use and drives the shaft to rotate when rotating.

6. The single-sided adhesive tape automatic switching device according to claim 5, characterized in that: The clutch-dispersion drive device is a clamping claw cylinder or a bidirectional cylinder.

7. The single-sided adhesive tape automatic switching device according to claim 5, characterized in that: The clutch-disconnect driving device is connected to the movable bracket via a clutch-disconnect connecting piece.

8. The single-sided adhesive tape automatic switching device according to claim 5, characterized in that: The docking piece includes a docking sleeve, an anti-skid triangular rod, an auxiliary connection spring and a sleeve with a hole. The end of the sleeve with a hole facing the film assembly is provided with an auxiliary rotation head, and the other end is provided with a triangular hole. One end of the anti-skid triangular rod is fixedly installed at the bottom of the inner hole of the docking sleeve, and the other end extends into the triangular hole of the sleeve with a hole. The auxiliary connection spring is sleeved on the anti-skid triangular rod, and the two ends are respectively fixedly connected to the bottom of the inner hole of the sleeve with a hole and the docking sleeve. The shaft member includes a conductive shaft and a center shaft, the center shaft is fixedly connected to the chuck, the conductive shaft is installed on the center shaft and faces one end of the perforated sleeve, and is provided with a slot that cooperates with the rotation-aiding slot; the conductive shaft located at the end of the center shaft is made of conductive material, and the positive and negative poles of the light-emitting diode are respectively conductively connected to the conductive shafts on both sides of the chuck; when the lifting block rises, the conductive shafts on both sides of the chuck are in close contact with the lifting block under the action of the gravity of the chuck, and the positive and negative poles of the light-emitting diode are respectively connected to the positive and negative poles of the power supply.

9. The single-sided adhesive tape automatic switching device according to claim 8, characterized in that: The conductive shaft is a copper shaft.

10. The single-sided adhesive tape automatic switching device according to claim 1, characterized in that: A buffer device is also provided, which includes a buffer motor, a screw rod, a connecting block with screw holes and a tension rod. A slider is fixedly connected to the bottom of the connecting block with screw holes, and the slider is slidably arranged on a guide rail. The screw rod passes through the screw holes of the connecting block with screw holes and is driven to rotate by the buffer motor so that the connecting block with screw holes moves along the guide rail; the tension rod is installed on the connecting block with screw holes and is located in front of the film assembly in use.

Images