Foam tape cutting device and method

Abstract

The invention relates to the technical field of cutting, and discloses a foam tape cutting device and method.The foam tape cutting device comprises a cutting platform, the surface of the cutting platform is provided with a cutting module and a driving motor, the exterior of the driving motor is provided with three containing rollers, the containing rollers are used for containing foam tape, and the containing rollers are arranged in a triangular shape; one vertex of the triangular structure is continuously close to the cutting module, the triangular layout forms a spatial indexing station, based on cooperative operation of the triangular layout and multiple components, the device constructs a spatial time-sharing utilization mode, cutting and material changing are conducted in parallel, the discontinuous production mode of cutting-shutdown-material changing of traditional equipment is thoroughly broken through, and the production efficiency is improved. When the cutting module works, the other placing rollers can synchronously complete feeding preparation, continuous circulation of cutting, material changing and material preparing is achieved, the working mode remarkably improves the equipment operation efficiency, the space utilization rate is increased through the compact triangular layout, and the occupied area of a production line is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the cutting technical field, specifically to a cutting device and method of foam tape. BACKGROUND

[0002] Foam tape is a flexible adhesive product made of polyethylene, polyurethane and other polymer materials. It has a closed honeycomb structure inside, and has multiple properties such as shock absorption, waterproof sealing, and insulation. It is widely used in electronic and electrical assembly, automotive interior bonding, building curtain wall caulking, etc. In the process of use, it often needs to be cut into specific size specifications according to different scenes: in electronic device assembly, it needs to be cut into millimeter-level narrow strips for shockproof fixing of circuit board components; in automotive interior production, it needs to be cut into special-shaped pieces to achieve sealing and noise reduction of the ceiling and doors; in building construction, it needs to be cut into wide strips to complete the waterproof filling of door and window gaps.

[0003] However, the traditional cutting device has the following problems when continuously cutting foam tape: the mainstream equipment in the prior art adopts a single roller setting, and the foam tape roll is directly installed on a single placing roller. When the tape is exhausted and needs to be replaced, the cutting operation must be stopped, resulting in a long downtime of the equipment. According to industry statistics, the average downtime for single replacement is 3-5 minutes. If the production is 8 hours a day, the replacement process alone will cause about 15%-20% of the production capacity loss.

[0004] While some multi-roller cutting equipment designed to improve efficiency can reduce downtime by adding placing rollers, the use of a separate drive motor for each roller results in a very complex system structure. This multi-drive source configuration not only increases the initial purchase cost of the equipment, but also increases energy consumption and maintenance costs due to the increase in drive units. For example, the annual energy consumption cost of a traditional multi-roller equipment for cutting automotive interior foam tape is about 25% higher than that of a single-roller equipment. In addition, the maintenance downtime due to drive component failure is as long as 50-80 hours per year. Moreover, it is difficult to synchronize the control of multiple drive motors, which can cause problems such as out-of-sync power output and inconsistent feeding speed of each roller, thereby causing quality defects such as foam tape stretching and deformation and cutting size deviation.

[0005] More importantly, foam tape is an industrial auxiliary material with fierce market competition and limited profit space. The end-use field is extremely sensitive to cost control. The traditional multi-roller equipment is difficult to meet the actual needs of enterprises to reduce costs and increase efficiency due to its high cost in the case of generally low tape unit price. While the single-roller equipment has low purchase cost, the hidden cost increase due to low efficiency also compresses the profit space of enterprises.

[0006] Therefore, the present application provides a cutting device and method of foam tape. SUMMARY

[0007] The present application aims to provide a cutting device and method of foam tape to solve the problems raised in the background art.

[0008] To achieve the above object, the present application provides the following technical solution: a cutting device of foam tape, comprising a cutting platform, the surface of the cutting platform is respectively provided with a cutting module and a driving motor, the outside of the driving motor is provided with a placing roller, the placing roller is used for placing foam tape, the placing roller is provided with three and arranged in a triangular shape, one vertex of the triangular structure is continuously close to the cutting module, the triangular arrangement forms a spatial indexing station, so that any placing roller can perform cutting operation when rotating to the lower side of the cutting module, realizing quick station switching, the fixed end of the driving motor is fixedly connected with an auxiliary plate, and the output shaft of the driving motor is provided with a sorting driving element, the surface of the sorting driving element is movably connected with a triangular plate, the three vertices of the triangular plate are respectively provided with a single selection driving element, the single selection driving element is correspondingly arranged with the placing roller, and the auxiliary plate limits the triangular plate to ensure the accurate rotating position and provide positioning protection for the switching of the placing roller; before cutting, the control system drives the output shaft of the driving motor to first reverse counterclockwise, drives the sorting driving element and the triangular plate to rotate, and switches the placing roller to be cut to the lower side of the cutting module; then, the output shaft of the driving motor is continuously rotated in a forward direction to reset, drive the corresponding placing roller to feed, and complete station switching and feeding in a single forward and reverse rotation cycle, the cutting device forms a spatial indexing utilization mode based on the triangular arrangement, when the cutting module is working, the remaining placing rollers are synchronously fed, cutting and material replacement are parallel, no need to stop and wait, the operation efficiency and space utilization rate are significantly improved, and the cutting continuity is ensured.

[0009] Preferably, the surface of the auxiliary plate is provided with three movement grooves, the movement grooves extend along the radial direction of the auxiliary plate, and the inside of each movement groove is movably connected with an auxiliary sliding block, and a spring one is fixedly connected between the inner wall of the movement groove and the auxiliary sliding block; three vertices of the triangular plate are provided with concave arc grooves, when the output shaft of the driving motor reverses counterclockwise by one hundred and twenty degrees, the triangular plate rotates synchronously, the concave arc grooves at the vertices are aligned with the auxiliary sliding blocks in the corresponding movement grooves, the auxiliary sliding blocks are elastically pushed into the concave arc grooves by the spring one, the circumferential position of the triangular plate is limited, and the angle accuracy of the subsequent feeding action is ensured.

[0010] Preferably, the sorting driving element comprises a cylindrical convex shell, the cylindrical convex shell is fixedly connected with the output shaft of the driving motor, a plurality of rotating blocks are circumferentially arranged on the inner edge of the cylindrical convex shell, a ratchet block is rotatably connected to the surface of each rotating block, and a spring two is fixedly connected between the surface of each ratchet block and the adjacent rotating block.

[0011] Preferably, the triangular plate is rotationally connected to the cylindrical convex surface, a ratchet groove is formed through the center of the triangular plate, the inner wall of the ratchet groove is a one-way tooth shape matched with the ratchet block, when the cylindrical convex shell rotates counterclockwise, the ratchet block is clamped into the ratchet groove, driving the triangular plate to rotate synchronously, when the cylindrical convex shell rotates clockwise, the ratchet block is extruded by the inclined surface of the tooth groove, the spring is compressed, the ratchet block is separated from the ratchet groove, and the triangular plate remains stationary, realizing one-way driving control of the triangular plate by the sorting driving part.

[0012] Preferably, the single selection driving part includes three driving rings rotationally connected to the three vertices of the triangular plate, and the transmission belt is transmissionally connected between the three driving rings and the cylindrical convex shell, when the cylindrical convex shell rotates, the transmission belt drives the three driving rings to rotate synchronously, constructing a "central driving-multiple ring linkage" power distribution mode.

[0013] Preferably, the inside of the driving ring is axially slidably connected with a sliding ratchet, the surface of the sliding ratchet is provided with an inner ratchet tooth; the inside of each sliding ratchet is slidably connected with a fixed ratchet, the surface of the fixed ratchet is provided with an outer ratchet tooth matched with the inner ratchet tooth, and the fixed ratchet is fixedly connected with the placement roller, when the sliding ratchet is pushed to approach the fixed ratchet by external force, the inner ratchet tooth and the outer ratchet tooth are engaged, the rotation of the driving ring can drive the fixed ratchet and the placement roller to rotate synchronously through the sliding ratchet, realizing selective transmission of power.

[0014] Preferably, the end of the sliding ratchet away from the fixed ratchet is a circular arc guide surface, the surface of the auxiliary plate and located on the side of the triangular vertex close to the cutting module is fixedly connected with a positioning protrusion, the end of the sliding ratchet away from the fixed ratchet is rotationally connected with a rotating disc, a plurality of springs are fixedly connected between the rotating disc and the surface of the triangular plate, when the triangular plate rotates to make the corresponding vertex close to the cutting module, the positioning protrusion extrudes the rotating disc, the sliding ratchet is pushed to slide to the fixed ratchet and engage through the elastic compression of the springs, realizing precise control of "station to station-automatic engagement".

[0015] The cutting method of the foam tape includes the following steps: Step one: wind the foam tape to three placement rollers, initialize the control system, and keep the initial station of the triangular plate through the auxiliary plate limiting; Step two: when the current placement roller needs to be cut, the control system reverses the driving motor counterclockwise by one hundred and twenty degrees, drives the triangular plate to switch the station, and the auxiliary sliding block is clamped into the concave arc groove to complete the limiting; Step three: the driving motor rotates forward, the sorting driving part drives the corresponding placement roller to feed through the transmission belt, the engaged sliding ratchet and fixed ratchet, the cutting module synchronously cuts, and the remaining placement rollers are in parallel standby; Step four: repeat steps two to three to cyclically switch the placement rollers, realizing continuous cutting operation.

[0016] Preferably, in step two, when the driving motor drives the triangular plate to complete the station switching, the original cutting station rotates to the non-cutting position, and the indicator light corresponding to the non-cutting position of the cutting platform automatically lights up, prompting the operator to prepare for material replacement of the placing roller, and when the new station's placing roller completes the feeding and cutting and triggers the station switching again, the original light position indicator light is turned off, and the cycle linkage prompts the material replacement.

[0017] Preferably, in step two, after the auxiliary sliding block is clamped into the concave arc groove, the driving motor's angle encoder verifies the rotation accuracy, and if the deviation is more than ±0.5°, the driving motor is corrected by micro forward and reverse rotation; if the sliding ratchet does not normally engage with the fixed ratchet in step three, spring three pushes the sliding ratchet to reset, re-executes the engagement action, and stops and alarms after 3 retries fail.

[0018] Compared with the prior art, the beneficial effects of the present application are: 1. The device adopts the innovative layout of three placing rollers arranged in a triangle, so that any placing roller can immediately perform cutting operation when it rotates to the lower side of the cutting module, forming a spatial indexing station. This layout converts the traditional single-roller equipment "stop and replace material" mode into "station cycle switching". Through the structural design of the continuous approach of the triangular vertex and the cutting module, the rapid switching and accurate positioning of the placing roller are realized, and the automatic feeding and positioning of the cutting tape can be completed without manual intervention, thereby fundamentally eliminating the production capacity loss problem caused by material replacement of single-roller equipment and laying a structural foundation for continuous production.

[0019] 2. Through the limiting cooperation mechanism of the auxiliary plate and the triangular plate, after the driving motor drives the triangular plate to rotate 120 degrees, the auxiliary sliding block in the movement groove and the concave arc groove are clamped to realize the accurate limiting of the triangular plate in the circumferential direction. This structural design reliably guarantees the switching accuracy of the placing roller, avoids the cutting deviation problem caused by the asynchronous driving of multiple rollers, ensures that the positioning error of the triangular plate after each rotation is controlled within a very small range through the elastic pushing of spring one, and provides stability support at the mechanical structure level for the high-precision cutting of foam tape, especially suitable for application scenarios such as electronic and electrical products that require strict size accuracy.

[0020] 3. The one-way driving structure of the sorting driving member and the triangular plate realizes the synchronous completion of station switching and feeding action through the engagement characteristics of the ratchet block and the ratchet groove in the cylindrical convex shell. When the driving motor rotates counterclockwise, the ratchet block drives the triangular plate to switch stations; when it rotates clockwise, the ratchet block disengages from the ratchet groove, and the power focuses on driving the corresponding placing roller to feed. This "single driving source time control" design greatly simplifies the system structure compared with the traditional multiple-roller equipment, which independently equips each roller with a driving motor, reduces the equipment manufacturing cost, avoids the problems of high energy consumption and complex maintenance caused by multiple driving sources, and significantly improves the economy and reliability of the device.

[0021] 4、Single selection driving part realizes accurate power distribution of three placing rollers through the selective engagement mechanism of sliding ratchet and fixed ratchet, cooperates with the "central driving-multiple ring linkage" mode of the transmission belt, when the corresponding vertex is close to the cutting module by the rotation of the triangular plate, the positioning block extrudes the rotating disc, drives the sliding ratchet and the fixed ratchet to engage, only drives the placing roller of the current station to feed, and the remaining rollers remain stationary, the structure does not need to be equipped with independent driving unit for each placing roller, realizes the parallel operation mode of "one roller cutting, two rollers feeding" through mechanical transmission, while ensuring the reliability of power transmission, effectively reduces the equipment cost and energy consumption, solves the industry pain point of high cost of traditional multi-roller equipment.

[0022] 5、Based on the cooperative operation of triangular layout and multiple components, the device constructs a space time utilization mode, so that cutting and material changing are carried out in parallel, completely breaking the traditional equipment "cutting-stop-changing" intermittent production mode, while the cutting module is working, the remaining placing rollers can complete the feeding preparation at the same time, realizing the continuous cycle of "cutting-changing-preparation", this working mode not only improves the equipment running efficiency significantly, but also improves the space utilization through the compact triangular layout, reduces the production line area, at the same time, the design of single driving source reduces the energy consumption and maintenance cost, so that the device has significant cost control advantage and production efficiency improvement space in the production of foam tape and other industrial auxiliary materials with limited profit space. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a front view of the main structure of the application; Figure 2 It is a rear view of the main structure of the application; Figure 3 It is a disassembled view of the main structure of the application; Figure 4 It is a view of the main structure of the application Figure 3 It is a view of the main structure of the application Figure 5 It is a view of the main structure of the application Figure 6 It is a view of the main structure of the application Figure 7 It is a view of the main structure of the application Figure 8 It is a view of the main structure of the application Figure 9 It is a flow chart of the second embodiment of the application.

[0024] In the figure: 1. Cutting platform; 2. Cutting module; 3. Drive motor; 4. Placement roller; 5. Auxiliary plate; 51. Motion groove; 52. Auxiliary slider; 53. Spring 1; 54. Positioning protrusion; 6. Sorting drive component; 61. Cylindrical convex shell; 62. Rotating block; 63. Spring 2; 64. Ratchet; 7. Triangular plate; 71. Ratchet groove; 72. Concave arc groove; 8. Single selection drive component; 81. Drive ring; 82. Sliding ratchet; 83. Fixed ratchet; 84. Rotating disk; 85. Spring 3; 86. Transmission belt. Detailed Implementation

[0025] 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 protection scope of the present invention.

[0026] Example 1, please refer to as follows Figures 1 to 8 As shown, a foam tape cutting device includes a cutting platform 1. A cutting module 2 and a drive motor 3 are respectively mounted on the surface of the cutting platform 1. Placement rollers 4 are mounted outside the drive motor 3. The placement rollers 4 are used to place the foam tape. Three placement rollers 4 are arranged in a triangle, with one vertex of the triangle continuously close to the cutting module 2. This triangular layout forms a spatial indexing station, allowing cutting to be performed when any placement roller 4 rotates to below the cutting module 2, achieving rapid station switching. An auxiliary plate 5 is fixedly connected to the fixed end of the drive motor 3, and a sorting drive component 6 is mounted on its output shaft. A triangular plate 7 is movably connected to the surface of the sorting drive component 6, and a single-selection drive component 8 is mounted on each of the three vertices of the triangular plate 7. The drive component 8 is installed correspondingly to the placement roller 4. The auxiliary plate 5 limits the triangular plate 7 to ensure its rotation position is accurate, providing positioning guarantee for the switching of the placement roller 4. Before cutting, the control system commands the output shaft of the drive motor 3 to first rotate counterclockwise, driving the sorting drive component 6 and the triangular plate 7 to rotate, switching the placement roller 4 to be cut to the bottom of the cutting module 2; then it rotates forward continuously to reset, driving the corresponding placement roller 4 to feed material. A single forward and reverse cycle completes the station switching and feeding. The cutting device forms a space time-sharing utilization mode based on the triangular layout. When the cutting module 2 is working, the other placement rollers 4 are fed synchronously, realizing parallel cutting and material changing without stopping and waiting, significantly improving operating efficiency and space utilization, and ensuring cutting continuity.

[0027] It should be noted that the surface of the auxiliary plate 5 has three motion grooves 51, which extend radially along the auxiliary plate 5 and are each slidably connected to an auxiliary slider 52. A spring 53 is fixedly connected between the inner wall of the motion groove 51 and the auxiliary slider 52. The three vertices of the triangular plate 7 each have a concave arc groove 72. When the output shaft of the drive motor 3 rotates counterclockwise by 120 degrees, the triangular plate 7 rotates synchronously, aligning the concave arc groove 72 at the vertices with the auxiliary slider 52 in the corresponding motion groove 51. The spring 53 elastically pushes the auxiliary slider 52 into the concave arc groove 72, achieving circumferential limiting of the triangular plate 7 and ensuring the angular accuracy of subsequent feeding actions. The sorting drive component 6 includes a cylindrical convex shell 61, which is fixedly connected to the output shaft of the drive motor 3. Next, several rotating blocks 62 are evenly distributed around the inner edge of the cylindrical convex shell 61. A ratchet block 64 is rotatably connected to the surface of each rotating block 62. A spring 63 is fixedly connected between the surface of the ratchet block 64 and each adjacent rotating block 62. A triangular plate 7 is rotatably connected to the surface of the cylindrical convex shell 61. A ratchet groove 71 is formed through the center of the triangular plate 7. The inner wall of the ratchet groove 71 has a one-way toothed shape adapted to the ratchet block 64. When the cylindrical convex shell 61 rotates counterclockwise, the ratchet block 64 engages with the toothed groove 71, causing the triangular plate 7 to rotate synchronously. When the cylindrical convex shell 61 rotates clockwise, the ratchet block 64 is compressed by the inclined surface of the toothed groove, compressing the spring 63 and disengaging from the ratchet groove 71. The triangular plate 7 remains stationary, thus achieving one-way drive control of the triangular plate 7 by the sorting drive component 6. The single-selection drive component 8 includes three... A drive ring 81 is rotatably connected to the three vertices of the triangular plate 7, and a transmission belt 86 is connected between the three drive rings 81 and the cylindrical convex shell 61. When the cylindrical convex shell 61 rotates, the transmission belt 86 drives the three drive rings 81 to rotate synchronously, forming a "center-driven - multi-ring linkage" power distribution mode. A sliding ratchet 82 is slidably connected axially inside the drive ring 81, and the surface of the sliding ratchet 82 is provided with internal ratchet teeth. A fixed ratchet 83 is slidably connected inside each sliding ratchet 82, and the surface of the fixed ratchet 83 is provided with external ratchet teeth that match the internal ratchet teeth. The fixed ratchet 83 is fixedly connected to the placement roller 4. When the sliding ratchet 82 is pushed by an external force towards the fixed ratchet 83, the internal ratchet teeth and external ratchet teeth mesh, and the drive ring 81 rotates. The sliding ratchet 82 can drive the fixed ratchet 83 and the placement roller 4 to rotate synchronously, achieving selective power transmission. The end of the sliding ratchet 82 away from the fixed ratchet 83 is an arc-shaped guide surface, located on the surface of the auxiliary plate 5 and on the side of the triangle vertex close to the cutting module 2. A positioning protrusion 54 is fixedly connected thereto. The end of the sliding ratchet 82 away from the fixed ratchet 83 is rotatably connected to a rotating disk 84. Several springs 85 are fixedly connected between the rotating disk 84 and the surface of the triangle plate 7. When the triangle plate 7 rotates and the corresponding vertex approaches the cutting module 2, the positioning protrusion 54 squeezes the rotating disk 84. Through the elastic compression of the springs 85, the sliding ratchet 82 is pushed to slide towards the fixed ratchet 83 and engage, achieving precise control of "workstation in place - automatic engagement".

[0028] Specifically, in the initial state, the operator installs the foam tape rolls onto the three placement rollers 4 respectively. At this time, the control system completes initialization, the drive motor 3 is in standby state, and the three placement rollers 4 are arranged in a triangle. One of the vertices is close to the cutting module 2. The triangle plate 7 maintains the initial position under the limiting action of the auxiliary plate 5, so that the placement roller 4 in the initial position is aligned with the cutting module 2, preparing for the first cut.

[0029] When foam tape cutting is required, the control system issues a command, and the output shaft of the drive motor 3 starts to rotate counterclockwise. The output shaft of the drive motor 3 is fixedly connected to the cylindrical convex shell 61 of the sorting drive component 6. Therefore, the cylindrical convex shell 61 will rotate counterclockwise synchronously with the output shaft. The rotating blocks 62, which are evenly distributed around the inner edge of the cylindrical convex shell 61, also rotate. The ratchet block 64, which is rotatably connected to the surface of the rotating block 62, remains in an extended state under the action of the spring 63. Since the inner wall of the ratchet groove 71 through the center of the triangular plate 7 is a one-way tooth shape that matches the ratchet block 64, when the cylindrical convex shell 61 rotates counterclockwise, the ratchet block 64 can be smoothly inserted into the tooth groove of the ratchet groove 71, thereby driving the triangular plate 7 to rotate 120 degrees counterclockwise synchronously.

[0030] During the rotation of the triangle plate 7, the concave arc groove 72 at its apex will align with the auxiliary slider 52 in the corresponding motion groove 51. At this time, under the elastic action of the spring 53, the auxiliary slider 52 will be pushed and locked into the concave arc groove 72, thereby achieving circumferential limiting of the triangle plate 7 and ensuring the accuracy of the rotation angle of the triangle plate 7. This provides a reliable positioning guarantee for the subsequent feeding action. This limiting process ensures that after each rotation of the triangle plate 7, the placement roller 4 can accurately switch to the station corresponding to the cutting module 2, and the error can be controlled within a very small range, thereby ensuring the accuracy and stability of the cutting operation.

[0031] After the workstation switch is completed, the control system commands the output shaft of the drive motor 3 to rotate continuously in the positive direction. At this time, the cylindrical convex shell 61 rotates clockwise, and the ratchet block 64 is squeezed by the inclined surface of the ratchet groove 71, compressing the spring 63 and disengaging from the ratchet groove 71, so that the triangular plate 7 remains stationary and no longer rotates with the cylindrical convex shell 61.

[0032] During the clockwise rotation of the cylindrical convex shell 61, its power is transmitted to the three drive rings 81 through the transmission belt 86. The three drive rings 81 are respectively rotatably connected to the three vertices of the triangular plate 7, and form a synchronous transmission structure with the inner edge of the cylindrical convex shell 61 through the transmission belt 86, thereby realizing the power distribution mode of "center drive - multi-ring linkage" so that the three drive rings 81 can rotate synchronously.

[0033] During the above process, when the triangle plate 7 rotates and the corresponding vertex approaches the cutting module 2, the positioning protrusion 54 on the surface of the auxiliary plate 5, located on the side of the triangle vertex that is close to the cutting module 2, will squeeze the rotating disk 84 that is rotatably connected to the end of the sliding ratchet 82 away from the fixed ratchet 83. The spring 85 that is fixedly connected between the rotating disk 84 and the surface of the triangle plate 7 is compressed, and the sliding ratchet 82 is pushed towards the fixed ratchet 83 by the elastic force.

[0034] When the sliding ratchet 82 approaches the fixed ratchet 83, the inner and outer ratchet teeth of the two mesh with each other. At this time, the power generated by the rotation of the drive ring 81 can drive the fixed ratchet 83 and the placement roller 4 connected thereto to rotate synchronously through the sliding ratchet 82, so as to realize the feeding function of the placement roller 4.

[0035] The other placement rollers 4 that are not close to the cutting module 2 will not rotate to feed because their corresponding sliding ratchet 82 is not squeezed by the positioning protrusion 54 and the sliding ratchet 82 and the fixed ratchet 83 are not engaged. This achieves precise selection and control of the feeding action of different placement rollers 4.

[0036] During the feeding process of the placement roller 4, the cutting module 2 performs cutting operations on the foam tape. Since the three placement rollers 4 are arranged in a triangular layout to form a spatial indexing station, while the current placement roller 4 is performing cutting operations, the other two placement rollers 4 can simultaneously perform feeding preparation work, such as installing new foam tape rolls and adjusting tape tension.

[0037] When the foam tape on the current placement roller 4 is cut and the remaining amount reaches a certain threshold and needs to be replaced, the control system issues another command. The output shaft of the drive motor 3 repeats the process of first rotating counterclockwise 120 degrees to switch the work position, and then rotating forward continuously to reset the feeding process. This switches the next placement roller 4 to be cut to below the cutting module 2, and the cutting operation continues. This cycle repeats, using the single forward and reverse rotation of the drive motor 3 to sequentially switch the work positions of the three placement rollers 4, realizing a continuous operation mode of "cutting-changing-preparing".

[0038] Throughout the entire operation, the cutting device utilizes a triangular layout based on the placement roller 4, forming a time-sharing space utilization mode. Through the coordinated operation of components such as the drive motor 3, auxiliary plate 5, sorting drive component 6, triangular plate 7, and single-selection drive component 8, cutting and material changing can be carried out in parallel without downtime. This working mode not only significantly improves the operating efficiency of the device and reduces downtime caused by material changing, but also improves space utilization, enabling the equipment to efficiently complete the continuous cutting task of foam tape within a limited space. This effectively ensures the continuity and stability of the cutting operation and meets the demand for efficient cutting of foam tape in actual production.

[0039] Example 2, please refer to the following: Figure 9As shown, the method for cutting foam tape includes the following steps: Step 1: Roll the foam tape onto the three placement rollers 4, initialize the control system, and keep the triangular plate 7 in the initial position by the auxiliary plate 5; Step 2: When the current roller 4 needs to be cut, the control system causes the drive motor 3 to rotate counterclockwise by 120 degrees, which drives the triangular plate 7 to switch positions, and the auxiliary slider 52 is engaged in the concave arc groove 72 to complete the limit. Step 3: Drive motor 3 rotates in the forward direction, and sorting drive component 6 drives corresponding placement roller 4 to feed material through transmission belt 86, meshing sliding ratchet 82 and fixed ratchet 83. Cutting module 2 cuts synchronously, and the remaining placement roller 4 prepares material in parallel. Step 4: Repeat steps 2-3, cyclically switching the placement roller 4 to achieve continuous cutting operation.

[0040] It should be noted that in step two, when the drive motor 3 drives the triangular plate 7 to complete the station switching and the original cutting station rotates to the non-cutting station, the indicator light of the corresponding non-cutting station on the cutting platform 1 will automatically light up, prompting the operator to prepare for material replacement of the placement roller 4. When the placement roller 4 of the new station completes the feeding and cutting and triggers the station switching again, the indicator light of the original lit position will turn off, and the cycle will prompt for material replacement. In step two, after the auxiliary slider 52 is engaged with the concave arc groove 72, the rotation accuracy is verified by the angle encoder of the drive motor 3. When the deviation exceeds ±0.5°, the drive motor 3 will slightly reverse to correct it. If the sliding ratchet 82 does not properly engage with the fixed ratchet 83 in step three, the spring 3 85 will push the sliding ratchet 82 to reset and re-execute the engagement action. If it fails to retry 3 times, the machine will stop and alarm.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for foam tape, comprising a cutting platform (1), wherein a cutting module (2) and a drive motor (3) are respectively mounted on the surface of the cutting platform (1), and a placement roller (4) is mounted on the outside of the drive motor (3), the placement roller (4) being used to place the foam tape, characterized in that: The placement rollers (4) are arranged in a triangular pattern, with one vertex of the triangle structure continuously close to the cutting module (2). This triangular layout forms a spatial indexing station, allowing any placement roller (4) to perform cutting operations when it rotates to the bottom of the cutting module (2), thus achieving rapid station switching. The drive motor (3) is fixedly connected to an auxiliary plate (5), and its output shaft is equipped with a sorting drive component (6). A triangular plate (7) is movably connected to the surface of the sorting drive component (6). Each of the three vertices of the triangular plate (7) is equipped with a single-selection drive component (8), which is installed correspondingly to the placement roller (4). The auxiliary plate (5) controls the triangular plate (7). Limiting ensures precise rotation position and provides positioning guarantee for switching of placement roller (4). Before cutting, the control system commands the output shaft of the drive motor (3) to rotate counterclockwise, driving the sorting drive (6) and the triangular plate (7) to rotate, switching the placement roller (4) to be cut to the bottom of the cutting module (2); then rotating forward continuously to reset, driving the corresponding placement roller (4) to feed material. A single forward and reverse cycle completes the station switching and feeding. The cutting device forms a space time-sharing utilization mode based on the triangular layout. When the cutting module (2) is working, the other placement rollers (4) are fed synchronously, realizing parallel cutting and material changing without stopping and waiting, significantly improving operating efficiency and space utilization, and ensuring cutting continuity.

2. The foam tape cutting device according to claim 1, characterized in that: The surface of the auxiliary plate (5) is provided with three motion grooves (51). The motion grooves (51) extend radially along the auxiliary plate (5) and are all slidably connected to auxiliary sliders (52). A spring (53) is fixedly connected between the inner wall of the motion groove (51) and the auxiliary slider (52). The three vertices of the triangle plate (7) are provided with concave arc grooves (72). When the output shaft of the drive motor (3) rotates counterclockwise by 120 degrees, the triangle plate (7) rotates synchronously, so that the concave arc groove (72) at the vertex is aligned with the auxiliary slider (52) in the corresponding motion groove (51). The spring (53) elastically pushes the auxiliary slider (52) into the concave arc groove (72), thereby achieving circumferential positioning of the triangle plate (7) and ensuring the angular accuracy of subsequent feeding actions.

3. The foam tape cutting device according to claim 1, characterized in that: The sorting drive component (6) includes a cylindrical convex shell (61), which is fixedly connected to the output shaft of the drive motor (3). Several rotating blocks (62) are evenly distributed around the inner edge of the cylindrical convex shell (61). A ratchet block (64) is rotatably connected to the surface of the rotating block (62). A spring (63) is fixedly connected between the surface of the ratchet block (64) and the adjacent rotating block (62).

4. The foam tape cutting device according to claim 3, characterized in that: The triangular plate (7) is rotatably connected to the surface of the cylindrical convex shell (61). A ratchet (71) is provided through the center of the triangular plate (7). The inner wall of the ratchet (71) is a one-way tooth shape that matches the ratchet block (64). When the cylindrical convex shell (61) rotates counterclockwise, the ratchet block (64) is engaged in the ratchet groove (71) and drives the triangular plate (7) to rotate synchronously. When the cylindrical convex shell (61) rotates clockwise, the ratchet block (64) is squeezed and compressed by the inclined surface of the tooth groove, compressing the second spring (63) and disengaging from the ratchet groove (71). The triangular plate (7) remains stationary, realizing the one-way drive control of the triangular plate (7) by the sorting drive component (6).

5. The foam tape cutting device according to claim 1, characterized in that: The single-selection drive component (8) includes three drive rings (81), which are rotatably connected to the three vertices of the triangular plate (7). The three drive rings (81) are connected to the cylindrical convex shell (61) by a transmission belt (86). When the cylindrical convex shell (61) rotates, the transmission belt (86) drives the three drive rings (81) to rotate synchronously, thus constructing a "center-driven, multi-ring linkage" power distribution mode.

6. The foam tape cutting device according to claim 5, characterized in that: The drive ring (81) has a sliding ratchet (82) slidably connected to its interior along the axial direction. The surface of the sliding ratchet (82) is provided with an inner ratchet tooth. Each sliding ratchet (82) has a fixed ratchet (83) slidably connected to its interior. The surface of the fixed ratchet (83) is provided with an outer ratchet tooth that matches the inner ratchet tooth. The fixed ratchet (83) is fixedly connected to the placement roller (4). When the sliding ratchet (82) is pushed by an external force to approach the fixed ratchet (83), the inner ratchet tooth meshes with the outer ratchet tooth. The rotation of the drive ring (81) can drive the fixed ratchet (83) and the placement roller (4) to rotate synchronously through the sliding ratchet (82), thereby achieving selective transmission of power.

7. The foam tape cutting device according to claim 6, characterized in that: The end of the sliding ratchet (82) away from the fixed ratchet (83) is an arc-shaped guide surface. The auxiliary plate (5) is fixedly connected to a positioning protrusion (54) on the side of the triangle vertex close to the cutting module (2). The end of the sliding ratchet (82) away from the fixed ratchet (83) is rotatably connected to a rotating disk (84). Several springs (85) are fixedly connected between the rotating disk (84) and the surface of the triangle plate (7). When the triangle plate (7) rotates so that the corresponding vertex is close to the cutting module (2), the positioning protrusion (54) squeezes the rotating disk (84). Through the elastic compression of the springs (85), the sliding ratchet (82) is pushed to slide and engage with the fixed ratchet (83), realizing the precise control of "workstation in place - automatic engagement".

8. A method for cutting foam tape, applied to the foam tape cutting device according to any one of claims 1-7, characterized in that: Includes the following steps: Step 1: Roll the foam tape onto the three placement rollers (4), initialize the control system, and use the triangular plate (7) to maintain the initial position via the auxiliary plate (5); Step 2: When the current placement roller (4) needs to be cut, the control system causes the drive motor (3) to rotate counterclockwise by 120 degrees, driving the triangular plate (7) to switch positions, and the auxiliary slider (52) to be inserted into the concave arc groove (72) to complete the limit; Step 3: The drive motor (3) rotates in the forward direction, and the sorting drive component (6) drives the corresponding placement roller (4) to feed materials through the transmission belt (86), the meshing sliding ratchet (82) and the fixed ratchet (83). The cutting module (2) cuts synchronously, and the remaining placement rollers (4) prepare materials in parallel. Step 4: Repeat steps 2-3, cyclically switching the placement roller (4) to achieve continuous cutting operation.

9. The method for cutting foam tape according to claim 8, characterized in that: In step two, when the drive motor (3) drives the triangular plate (7) to complete the station switching, and the original cutting station rotates to the non-cutting station, the indicator light of the non-cutting station on the cutting platform (1) will automatically light up, prompting the operator to prepare for material replacement of the placement roller (4). When the placement roller (4) of the new station completes the feeding and cutting and triggers the station switching again, the indicator light of the original lit position will turn off, and the cycle will prompt for material replacement.

10. The method for cutting foam tape according to claim 9, characterized in that: In step two, after the auxiliary slider (52) is inserted into the concave groove (72), the rotation accuracy is verified by the angle encoder of the drive motor (3). When the deviation exceeds ±0.5°, the drive motor (3) slightly reverses to correct it. If the sliding ratchet (82) does not properly engage with the fixed ratchet (83) in step three, the spring three (85) pushes the sliding ratchet (82) to reset and re-execute the engagement action. If it fails to retry 3 times, the machine will stop and alarm.

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