Foam rubber slitting device

Abstract

The invention relates to a foam rubber slitting device, and relates to the technical field of foam rubber production, the foam rubber slitting device comprises a rack, a middle shaft is fixed on an output shaft of a driving motor, a central gear is fixed on the middle shaft, a planetary gear is meshed and connected in an inner fluted disc, the planetary gear is simultaneously meshed with the central gear, an outer shaft is rotatably sleeved outside the middle shaft, and a planetary carrier is fixed on the outer shaft; the planet carrier is rotationally connected with the planet gear; an outer rotating disc is fixed to the middle shaft, an inner rotating disc is fixed to the outer shaft, a plurality of ring cutters are fixed to the outer wall of the outer rotating disc, the inner rotating disc is slidably connected with a cutter holder, a cutter is fixed to the cutter holder, and the rack is provided with a driving structure used for driving the cutter holder to move. By means of the slitting device, slitting and cutting-off operation of foam rubber can be completed through a single driving source, and the length size and the width size of produced foam rubber belts are completely consistent. The slitting device does not need a controller, has no control difficulty, and further reduces the cost.

Description

Technical Field

[0001] The present application relates to the technical field of foam glue production, and in particular to a foam glue slitting device. Background Art

[0002] Foam adhesive refers to a double-sided adhesive made by coating both sides of the foam cotton substrate with a strong acrylic adhesive, and then covering one side with release paper or release film. If both sides are covered with release paper or release film, it is called sandwich double-sided adhesive paper. Foam adhesive has the characteristics of strong adhesion, good waterproofness, and buffering function. Foam cotton is divided into EVA foam, PE foam, PU foam, etc. according to the substrate. In the production process of foam adhesive, the foam raw material needs to be cut into strips, then rolled and cut into a certain length to form a product.

[0003] The existing utility model patent with announcement number CN217648433U discloses a foam tape gluing and slitting machine, including a motor, a belt, a first rotating column, a second rotating column, a third rotating column, a hydraulic cylinder, an extrusion block, a spring, a cutting block, a blade, a support frame and foam glue. The foam glue is fixed on the second rotating column, the motor drives the first rotating column to drive the second rotating column to move, and the belt drives the third rotating column to move. After the foam glue is installed, the extrusion block is driven downward by the hydraulic cylinder, the spring is driven to move by the extrusion block, the cutting block is driven to move by the spring, the foam glue is cut by the cutting block, the hydraulic cylinder continues to move downward to extrude the spring, and when the hydraulic cylinder extrude the spring, the blade continues to move downward, and then the motor drives the first rotating column to move, and the hydraulic cylinder continues to drive the blade to cut the foam glue on the outer wall of the second rotating column.

[0004] With regard to the above-mentioned related technologies, the inventor believes that the existing device needs to use a motor as a driving source when cutting the foam glue into strips, and needs to use a hydraulic cylinder or a pneumatic cylinder as a driving source when cutting the length of the foam glue. More driving sources not only increase the cost, but also increase the difficulty of control. It often requires a controller to control it to run automatically, which increases the cost. Summary of the invention

[0005] The present application provides a foam glue slitting device, which can complete the functions of cutting foam glue into strips and cutting to a fixed length through a single driving source, and can operate automatically without a controller, thereby reducing costs.

[0006] The present application provides a foam glue cutting device, which adopts the following technical solution: A foam glue slitting device, comprising a frame, a driving motor and an inner gear plate are fixed to the frame, a central shaft is fixed to the output shaft of the driving motor, a central gear is fixed to the central shaft, a planetary gear is meshed with the inner part of the inner gear plate, and the planetary gear is meshed with the central gear at the same time, an outer shaft is rotatably sleeved outside the central shaft, a planetary carrier is fixed to the outer shaft, and the planetary carrier is rotatably connected with the planetary gear; The central axis is fixed with an outer turntable, the outer axis is fixed with an inner turntable, the outer ring wall of the inner turntable is arranged close to the inner ring wall of the outer turntable, a plurality of ring cutting knives are fixed to the outer wall of the outer turntable, the inner turntable is slidably connected with a knife seat, a cutting knife is fixed on the knife seat, a through opening for the cutting knife to pass through is opened on the outer turntable, and the frame is provided with a driving structure for driving the knife seat to move.

[0007] By adopting the above technical solution, the foam glue to be cut is fed into the bottom of the outer turntable. After the drive motor is started, the motor drives the central axis to rotate, and then drives the outer turntable and the inner turntable to rotate through the transmission mechanism. The circular cutting knife cuts the foam glue raw material into strips as the outer turntable rotates. Through the deceleration effect of the central gear and the planetary gear, the rotation speed of the inner turntable is lower than that of the outer turntable. Therefore, after the outer turntable rotates several circles, the inner turntable rotates one circle. At this time, the foam glue has been cut into strips of longer lengths and can be cut. When the knife seat rotates to the lowest point with the inner turntable, the drive structure drives the knife seat to move downward, and the cutting knife moves downward to cut and cut the foam glue. Through this slitting device, the slitting and cutting operations of the foam glue can be completed by a single drive source. This slitting device does not require a controller, there is no control difficulty, and the cost is further reduced.

[0008] Optionally, the driving structure includes a support rod fixed to the frame, a protrusion is fixed on the support rod, an arc block for contacting the protrusion is fixed on the tool holder, and a spring is fixedly connected between the arc block and the inner turntable.

[0009] By adopting the above technical solution, when the inner turntable rotates to the position close to the bottom of the knife seat, the arc block and the protrusion begin to slide in contact, and the protrusion drives the arc block to move radially outward from the inner turntable, so that the knife seat and the cutting knife move toward the support plate, so that the cutting knife extends out of the opening to cut the foam glue on the top of the support plate, and the spring provides a restoring force for the reset of the knife seat.

[0010] Optionally, the outer annular wall of the inner turntable is rotatably connected to a plurality of rollers, and the rollers are in rolling contact with the inner annular wall of the outer turntable.

[0011] By adopting the above technical solution, a rolling support structure is formed between the inner turntable and the outer turntable through the roller, so that the inner turntable and the outer turntable maintain good coaxiality when rotating, thereby improving the stability of rotation.

[0012] Optionally, three planetary gears are evenly arranged along the circumference of the inner gear disc.

[0013] By adopting the above technical solution and setting three planetary gears, the force is stabilized.

[0014] Optionally, a cover plate is provided on the end surface of the inner gear disc, and an axle seat for rotationally connecting the central shaft is provided at the center of the cover plate.

[0015] By adopting the above technical solution, one side of the inner gear disc is covered by the cover plate, and the shaft seat plays the role of rotation support for one end of the central shaft.

[0016] Optionally, a sliding connection is established between the central shaft and the central gear via a keyway structure, and the planet carrier and the planet gear are slidably sleeved.

[0017] By adopting the above technical solution, the central shaft and the central gear can reliably transmit transmission through the keyway structure, and it is easy to slide the central gear to remove it from the end of the central shaft, and it can also be removed from the end of the planetary carrier by sliding the planetary gear.

[0018] Optionally, the cover plate abuts against end faces of the central gear and the planetary gears.

[0019] By adopting the above technical solution, the cover plate blocks the central gear and the planetary gears from leaving the interior of the inner gear disc.

[0020] Optionally, the frame is rotatably connected to a support plate, the support plate is located below the outer turntable, and an annular groove for the annular cutter to enter is opened on the support plate.

[0021] By adopting the above technical solution, the support plate is used to cooperate with the outer turntable to clamp the foam glue and transport it backward. The support plate drives the foam glue to move through friction, and the annular groove can allow the circular cutter to partially enter, thereby ensuring that the circular cutter cuts the raw material.

[0022] Optionally, the central axis is fixed with gear one, the support plate is fixed with gear two, the frame is rotatably connected with gear three and gear four, the gear three is meshed with gear one, and the gear four is meshed with gear three and gear two at the same time.

[0023] By adopting the above technical solution, through the sequential transmission of gear one, gear two, gear three and gear four, the rotation of the central shaft drives the support disk to rotate together, and the rotation direction of the outer turntable is opposite to that of the support disk.

[0024] Optionally, the diameter of gear one is smaller than that of gear two, so that the rotation speed of the outer turntable is greater than the rotation speed of the supporting disk.

[0025] By adopting the above technical solution, the linear speed of the circular cutter cutting the foam glue is greater than the linear speed of the supporting plate conveying the foam glue, and the circular cutter can cut the foam glue more easily.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through this slitting device, the foam adhesive strip cutting and cutting operations can be completed through a single driving source, so that the length and width dimensions of the produced foam tape are completely consistent. This slitting device does not require a controller, has no control difficulty, and further reduces costs; 2. The linear speed of the circular cutter cutting the foam glue is greater than the linear speed of the support plate conveying the foam glue, and the circular cutter can cut the foam glue more easily; 3. It is easy to replace the central gear and planetary gear of different diameter combinations, so as to adjust the speed ratio of the inner turntable and the outer turntable, and thus adjust the length of the foam glue after cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional foam glue cutting device according to an embodiment of the present invention Figure 1 ; Figure 2 A three-dimensional foam glue cutting device according to an embodiment of the present invention Figure 2 ; Figure 3 yes Figure 1 A magnified image of point A; Figure 4 It is a partial view of the inner rotating disk and the cutting knife of the embodiment.

[0028] Explanation of the accompanying drawings: 1. frame; 11. driving motor; 12. inner gear plate; 13. middle shaft; 21. center gear; 22. planetary gear; 23. outer shaft; 24. planetary frame; 3. outer turntable; 4. inner turntable; 14. cover plate; 15. shaft seat; 31. ring cutting knife; 5. support plate; 51. ring groove; 61. gear one; 62. gear two; 63. gear three; 64. gear four; 41. knife seat; 42. cutting knife; 43. guide rod; 32. through port; 16. support rod; 17. bump; 44. arc block; 45. spring; 46. roller. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] Reference Figure 1 and Figure 2The present embodiment discloses a foam glue slitting device, including a frame 1, a driving motor 11 and an inner gear disc 12 are fixed to the frame 1, a central shaft 13 is fixed to the output shaft of the driving motor 11, a central gear 21 is fixed to the central shaft 13, an inner ring of the inner gear disc 12 is a circle of inner gears, a planetary gear 22 is meshedly connected to the inside of the inner gear disc 12, three planetary gears 22 are evenly arranged along the circumference of the inner gear disc 12, and the planetary gears 22 are meshed with the central gear 21 at the same time, an outer shaft 23 is provided on the outer rotating sleeve of the central shaft 13, a planetary carrier 24 is fixed to the outer shaft 23, and the planetary carrier 24 is rotatably connected to the planetary gear 22.

[0031] The outer turntable 3 is fixed to the middle shaft 13, and the inner turntable 4 is fixed to the outer shaft 23. The middle shaft 13 is driven to rotate by the driving motor 11, and the middle shaft 13 drives the outer turntable 3 to rotate. At the same time, the middle shaft 13 drives the outer shaft 23 to rotate through the transmission action of the central gear 21 and the planetary gear 22. The transmission mechanism is a speed reduction mechanism, so that the rotation speed of the inner turntable 4 is lower than that of the outer turntable 3, and the rotation directions of the inner turntable 4 and the outer turntable 3 are consistent.

[0032] A cover plate 14 is provided on the end surface of the inner gear disc 12. The cover plate 14 is fixed by the inner edge covering the outer edge of the inner gear disc 12 to form a snap connection. At the same time, it is easy to remove the cover plate 14. The cover plate 14 abuts against the end surfaces of the central gear 21 and the planetary gears 22. The cover plate 14 blocks the central gear 21 and the planetary gears 22 from leaving the inner gear disc 12. The side of the cover plate 14 facing the central gear 21 is coated with lubricating oil to reduce the friction loss with the central gear 21 and the planetary gears 22. The center of the cover plate 14 is provided with a shaft seat 15 for rotationally connecting the central shaft 13. The shaft seat 15 plays the role of rotationally supporting one end of the central shaft 13.

[0033] The central shaft 13 and the central gear 21 are slidably connected by a keyway structure, and the planetary carrier 24 and the planetary gear 22 are slidably connected. The keyway structure allows the central shaft 13 and the central gear 21 to reliably transmit transmission, and it is also convenient to slide the central gear 21 to remove it from the end of the central shaft 13, and it is also possible to slide the planetary gear 22 to remove it from the end of the planetary carrier 24. The structure that facilitates the removal of the central gear 21 and the planetary gear 22 is for easy replacement. After replacing the central gear 21 and the planetary gear 22 with different diameter combinations, the transmission ratio can be changed, thereby adjusting the speed ratio of the inner turntable 4 and the outer turntable 3.

[0034] The outer ring wall of the inner turntable 4 is arranged close to the inner ring wall of the outer turntable 3. A plurality of circular cutters 31 are fixed on the outer wall of the outer turntable 3. The foam glue is cut into strips by the circular cutters 31. The more the number of circular cutters 31 is, the more the number of strips that can be cut at one time is. The frame 1 is rotatably connected with a support disk 5. The support disk 5 is located below the outer turntable 3. The support disk 5 is provided with an annular groove 51 for the circular cutters 31 to enter. The outer ring wall material of the support disk 5 is a material with a large friction force with the foam glue, which is convenient for driving the foam glue to move by friction. The annular groove 51 can be partially entered by the circular cutters 31, thereby ensuring that the circular cutters 31 cut the raw materials.

[0035] Reference Figure 1 , the middle shaft 13 is fixed with a gear 1 61, the support disk 5 is fixed with a gear 2 62, the frame 1 is rotatably connected with a gear 3 63 and a gear 4 64, the gear 3 63 is meshed with the gear 1 61, and the gear 4 64 is meshed with the gear 3 63 and the gear 2 62 at the same time. Through the sequential transmission of gear 1 61, gear 2 62, gear 3 63, and gear 4 64, the rotation of the middle shaft 13 drives the support disk 5 to rotate together, and the rotation direction of the outer turntable 3 is opposite to that of the support disk 5. Among them, the diameter of gear 1 61 is smaller than that of gear 2 62, so that the rotation speed of the outer turntable 3 is greater than the rotation speed of the support disk 5, so the linear speed of the circular cutter 31 cutting the foam glue is greater than the linear speed of the support disk 5 conveying the foam glue, and the circular cutter 31 can cut the foam glue more easily.

[0036] Reference Figure 3 and Figure 4 The inner turntable 4 is slidably connected to a knife holder 41, a cutting knife 42 is fixed on the knife holder 41, and two guide rods 43 are fixed to the knife holder 41, and the two guide rods 43 are slidably connected to the inner turntable 4 to improve the sliding stability of the knife holder 41. The number of cutting knives 42 is consistent with the number of cut strips of foam glue, and multiple cutting knives 42 are respectively located between adjacent ring cutting knives 31. The outer turntable 3 is provided with a through hole 32 for the cutting knife 42 to pass through. It should be noted that the width of the through hole 32 is much larger than the thickness of the cutting knife 42 to prevent the cutting knife 42 from colliding with the outer turntable 3 during the cutting action. Several through holes 32 are provided along the circumference of the outer turntable 3 to adapt to the central gear 21 and the planetary gear 22 of different diameter combinations. The frame 1 is provided with a driving structure for driving the knife holder 41 to move.

[0037] The driving structure includes a support rod 16 fixed to the frame 1, a protrusion 17 is fixed to the support rod 16, the protrusion 17 is located inside the inner rotating disk 4 near the lower end, the bottom surface of the protrusion 17 is an arc surface, and an arc block 44 for contacting the protrusion 17 is fixed to the knife seat 41, the side of the arc block 44 facing the center of the inner rotating disk 4 is an arc surface, and a spring 45 is fixedly connected between the arc block 44 and the inner rotating disk 4. When the inner rotating disk 4 rotates to the position where the knife seat 41 is close to the supporting disk 5, the arc block 44 and the protrusion 17 begin to slide in contact, and the protrusion 17 drives the arc block 44 to move radially outward of the inner rotating disk 4, then the knife seat 41 and the cutting knife 42 move toward the direction of the supporting disk 5, so that the cutting knife 42 extends out of the through hole 32 to cut the foam glue on the top of the supporting disk 5, and the spring 45 provides a restoring force for the reset of the knife seat 41.

[0038] The outer ring wall of the inner turntable 4 is rotatably connected to a plurality of rollers 46, which are evenly distributed along the circumference of the inner turntable 4, and the rollers 46 are in rolling contact with the inner ring wall of the outer turntable 3. The rollers 46 form a rolling support structure between the inner turntable 4 and the outer turntable 3, so that the inner turntable 4 and the outer turntable 3 maintain good coaxiality when rotating, thereby improving the stability of the rotation.

[0039] The implementation principle of a foam glue slitting device in an embodiment of the present application is: the foam glue to be slit is fed between the outer turntable 3 and the support plate 5, and after the drive motor 11 is started, the motor drives the central axis 13 to rotate, and then drives the outer turntable 3, the inner turntable 4, and the support plate 5 to rotate through various transmission mechanisms.

[0040] The outer turntable 3 and the support disk 5 rotate in opposite directions, so that the foam glue is clamped and transported backwards. The circular cutting knife 31 cuts the foam glue raw material into strips as the outer turntable 3 rotates. The cut foam glue is wound on a subsequent winding device (not shown in the figure).

[0041] Through the deceleration effect of the central gear 21 and the planetary gear 22, the speed of the inner turntable 4 is lower than that of the outer turntable 3. Therefore, after the outer turntable 3 rotates several times, the inner turntable 4 rotates one circle. At this time, the foam adhesive has been cut into strips of longer lengths and can be cut. When the knife seat 41 rotates to the lowest point with the inner turntable 4, the protrusion 17 drives the arc block 44 to move downward, and the cutting knife 42 moves downward to cut and cut the foam adhesive, completing the slitting operation of a roll of foam tape; as described above, continuous operation is carried out to achieve continuous production.

[0042] The slitting device can complete the slitting and cutting operations of the foam adhesive through a single driving source (i.e., the driving motor 11), so that the length and width of the produced foam adhesive tape are completely consistent. The slitting device does not require a controller, has no control difficulty, and further reduces the cost.

[0043] If the winding length of each roll of foam tape is to be changed, the cover plate 14 is removed, and then the central gear 21 and the planetary gear 22 are removed. After replacing the central gear 21 and the planetary gear 22 with different diameter combinations, the transmission ratio can be changed, thereby adjusting the speed ratio of the inner turntable 4 and the outer turntable 3, thereby changing the number of turns that the outer turntable 3 needs to rotate when the inner turntable 4 rotates one circle, thereby adjusting the length of the foam tape after cutting.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foam glue cutting device, Features: The invention comprises a frame (1), wherein a driving motor (11) and an inner gear disc (12) are fixed to the frame (1), a central shaft (13) is fixed to the output shaft of the driving motor (11), a central gear (21) is fixed to the central shaft (13), a planetary gear (22) is meshedly connected to the inside of the inner gear disc (12), and the planetary gear (22) is meshed with the central gear (21) at the same time, an outer shaft (23) is rotatably sleeved outside the central shaft (13), a planetary carrier (24) is fixed to the outer shaft (23), and the planetary carrier (24) is rotatably connected to the planetary gear (22); The central axis (13) is fixed with an outer turntable (3), the outer axis (23) is fixed with an inner turntable (4), the outer ring wall of the inner turntable (4) is arranged close to the inner ring wall of the outer turntable (3), a plurality of annular cutting knives (31) are fixed to the outer wall of the outer turntable (3), the inner turntable (4) is slidably connected with a knife seat (41), a cutting knife (42) is fixed on the knife seat (41), the outer turntable (3) is provided with a through opening (32) for the cutting knife (42) to pass through, and the frame (1) is provided with a driving structure for driving the knife seat (41) to move.

2. A foam glue cutting device according to claim 1, Features: The driving structure comprises a support rod (16) fixed to the frame (1), a convex block (17) being fixed on the support rod (16), an arc block (44) for contacting the convex block (17) being fixed on the knife seat (41), and a spring (45) being fixedly connected between the arc block (44) and the inner rotating disk (4).

3. A foam glue cutting device according to claim 1, Features: The outer ring wall of the inner rotating disk (4) is rotatably connected to a plurality of rollers (46), and the rollers (46) are in rolling contact with the inner ring wall of the outer rotating disk (3).

4. A foam glue cutting device according to claim 1, Features: Three planetary gears (22) are evenly arranged along the circumference of the inner gear disk (12).

5. A foam glue cutting device according to claim 1, Features: A cover plate (14) is provided on the end surface of the inner gear disc (12), and a shaft seat (15) for rotationally connecting the central shaft (13) is provided at the center of the cover plate (14).

6. A foam glue cutting device according to claim 5, Features: The central shaft (13) and the central gear (21) are slidably connected via a keyway structure, and the planet carrier (24) and the planet gear (22) are slidably sleeved.

7. A foam glue cutting device according to claim 6, Features: The cover plate (14) abuts against the end surfaces of the central gear (21) and the planetary gears (22).

8. A foam glue cutting device according to claim 1, Features: The frame (1) is rotatably connected to a support plate (5), the support plate (5) is located below the outer rotating plate (3), and a ring groove (51) for the ring cutting knife (31) to enter is provided on the support plate (5).

9. A foam glue cutting device according to claim 8, Features: The central shaft (13) is fixed with a gear 1 (61), the support plate (5) is fixed with a gear 2 (62), the frame (1) is rotatably connected with a gear 3 (63) and a gear 4 (64), the gear 3 (63) is meshed with the gear 1 (61), and the gear 4 (64) is simultaneously meshed with the gear 3 (63) and the gear 2 (62).

10. A foam glue cutting device according to claim 9, Features: The diameter of the gear one (61) is smaller than that of the gear two (62), so that the rotation speed of the outer rotating disk (3) is greater than the rotation speed of the supporting disk (5).

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