Roller type embossing machine for tissue production

Abstract

The utility model discloses a roll type embossing machine for tissue production. The roll type embossing machine comprises a fixed bottom plate, a fixed base, a supporting frame displacement assembly, an embossing thickness adjusting assembly and an opposite rotation driving assembly. The fixing base is fixedly connected to the top end of the fixing bottom plate, the supporting frame displacement assembly is arranged on the inner side of the fixing base, the embossing thickness adjusting assembly is arranged on the inner side of the supporting frame displacement assembly, and the opposite rotation driving assembly is arranged on one side of the supporting frame displacement assembly. Compared with the prior art, the paper towel embossing device has the advantages that paper towels with different thicknesses can be embossed under the condition that the two embossing rollers can rotate synchronously and oppositely.

Description

Technical Field

[0001] This utility model relates to the field of tissue paper production technology, and in particular to a roll embossing machine for tissue paper production. Background Technology

[0002] Paper towels are used to dry off moisture or remove dirt. To increase the density of the paper, embossing is required during the paper towel production process. In addition, embossing can reduce the chance of the paper being flattened or deformed and the fibers being damaged during transportation. Embossing adds a textured feel and plays a proper cushioning role during transportation.

[0003] However, existing patents have the following drawbacks:

[0004] (1) Most existing utility model paper towel production roller embossing machines are equipped with two embossing rollers. The two embossing rollers can rotate synchronously in opposite directions through the transmission mechanism to achieve embossing on both sides of the paper towel. However, due to the locking of the transmission structure, the distance between the two embossing rollers is locked, making it impossible to emboss paper towels of different thicknesses, thus limiting the scope of use of paper towel production roller embossing machines. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide a paper towel production roller embossing machine that can emboss paper towels of different thicknesses when the two embossing rollers can rotate synchronously in opposite directions.

[0006] To solve the above problems, the technical solution of this utility model is as follows: a paper towel production roller embossing machine, comprising: a fixed base plate, a fixed base, a support frame displacement component, an embossing thickness adjustment component, and a counter-rotating drive component; the fixed base is fixedly connected to the top of the fixed base plate, the support frame displacement component is disposed inside the fixed base, the embossing thickness adjustment component is disposed inside the support frame displacement component, and the counter-rotating drive component is disposed on one side of the support frame displacement component.

[0007] Furthermore, the support frame displacement assembly includes:

[0008] The support frame has a sliding groove at the top of the fixed base, the support frame is slidably connected to the top of the fixed base, and a connecting frame is fixedly connected to the bottom of the support frame, the connecting frame being slidably connected to the sliding groove;

[0009] A bidirectional lead screw is rotatably connected to the inner side of a fixed base, the bidirectional lead screw is threadedly connected to a connecting frame, and the outer side of the bidirectional lead screw is fixedly connected to a bevel gear.

[0010] Motor 1 is fixedly installed on the top of the fixed base plate. One end of the drive shaft of Motor 1 is fixedly connected to a bevel gear 2, which meshes with Bevel Gear 1.

[0011] Furthermore, the embossing thickness adjustment component includes:

[0012] Dust cover one, the dust cover one is fixedly connected to the top of the support frame;

[0013] Motor 2, there are two motors in total and both are fixedly installed inside the dust cover 1. The two motors 2 are controlled and started by the same controller. One end of the drive shaft of the motor 2 is fixedly connected to a bevel gear 3.

[0014] The limiting shaft is fixedly connected to the inner side of the transmission chamber, which is provided on the inner side of the support frame.

[0015] A lead screw is rotatably connected to the inside of the transmission chamber, and a bevel gear four is fixedly connected to the top of the lead screw, which meshes with a bevel gear three.

[0016] The lifting frame is threadedly connected to the outside of the lead screw, and is slidably connected to the transmission chamber and the limiting shaft.

[0017] Furthermore, the opposing rotation drive assembly includes:

[0018] Dust cover two, the dust cover two is fixedly connected to one side of the support frame;

[0019] There are two motors, both of which are fixedly installed inside the bottom of the dust cover. The two motors are controlled and started by the same controller. One end of the drive shaft of the motor is fixedly connected to a synchronous pulley.

[0020] A rotating shaft is rotatably connected to the inner side of the support frame, and a fixed shaft is fixedly connected to one side of the rotating shaft. The fixed shaft has a hexagonal cross-section.

[0021] Embossing roller one, the embossing roller one is disposed between fixed shafts one, and connecting pipes one are fixedly connected to both ends of the embossing roller one, and the connecting pipes one are slidably connected to the outside of the fixed shaft one;

[0022] Connecting shaft one, which is fixedly connected to one end of rotating shaft one that is far away from it, and synchronous pulley two and synchronous pulley three are fixedly connected to the outside of connecting shaft one;

[0023] Synchronous belt one, which is sleeved on the outside of synchronous pulley one and synchronous pulley two;

[0024] Connecting shaft two is rotatably connected to one side of the support frame, and a synchronous pulley four is fixedly connected to the outer side of connecting shaft two;

[0025] Synchronous belt two, which is sleeved on the outside of synchronous pulley three and synchronous pulley four;

[0026] Rotating shaft two is rotatably connected to the inner side of the lifting frame. A fixed shaft two is fixedly connected to an adjacent side of the rotating shaft two. The fixed shaft two has a hexagonal cross-section. A synchronous pulley five is fixedly connected to the other end of the rotating shaft two.

[0027] Embossing roller 2, which is disposed between fixed shaft 2, and connecting pipe 2 is fixedly connected to both ends of embossing roller 2, and the connecting pipe 2 is slidably connected to the outside of fixed shaft 2;

[0028] A connecting shaft three is rotatably connected to one side of the support frame, and a synchronous pulley six is ​​fixedly connected to the outer side of the connecting shaft three;

[0029] Gear 1, which is fixedly connected to the outside of connecting shaft 2;

[0030] Gear 2 is fixedly connected to the outside of connecting shaft 3, and gear 2 meshes with gear 1;

[0031] The slide rail is fixedly connected to one side of the support frame, and a guide shaft is fixedly connected to the inner side of the slide rail;

[0032] A slider, which is slidably connected to the inner side of the slide rail and slidably connected to the guide shaft;

[0033] A spring, which is sleeved on the outside of the guide shaft and fixedly connected between the slide rail and the slider, and the spring has its own damper;

[0034] Connecting shaft four is fixedly connected to one side of the slider, and a synchronous wheel seven is rotatably connected to one end of the connecting shaft four;

[0035] An auxiliary shaft is rotatably connected to one side of the support frame;

[0036] Synchronous belt three is sleeved on the outside of synchronous pulley five, synchronous pulley six, synchronous pulley seven and auxiliary shaft.

[0037] The advantages of this invention compared to existing technologies are as follows:

[0038] (1) The present invention provides a paper towel production roller embossing machine with an embossing thickness adjustment component and a unique counter-rotating drive component. The counter-rotating drive component can adaptively adjust according to the distance between the two embossing rollers, so that the paper towel production roller embossing machine can perform embossing operations on paper towels of different thicknesses. Attached Figure Description

[0039] Figure 1 This is a perspective view of a paper towel production roller embossing machine according to the present invention.

[0040] Figure 2 This is a cross-sectional view of a paper towel production roller embossing machine according to this utility model. Figure 1 .

[0041] Figure 3 This is a cross-sectional view of a paper towel production roller embossing machine according to this utility model. Figure 2 .

[0042] Figure 4 This is a cross-sectional view of a paper towel production roller embossing machine according to this utility model. Figure 3 .

[0043] Figure 5 This is a cross-sectional view of a paper towel production roller embossing machine according to this utility model. Figure 4 .

[0044] Figure 6 This is a cross-sectional view of a paper towel production roller embossing machine according to this utility model. Figure 5 .

[0045] Figure 7 This is an enlarged view of A, a roller embossing machine for paper towel production according to this utility model.

[0046] Figure 8 This is an enlarged view of B, a roller embossing machine for paper towel production according to this utility model.

[0047] As shown in the figure: 1. Fixed base plate; 2. Fixed base; 3. Support frame displacement assembly; 301. Slide groove; 302. Support frame; 303. Connecting frame; 304. Two-way lead screw; 305. Bevel gear one; 306. Motor one; 307. Bevel gear two; 4. Embossing thickness adjustment assembly; 401. Dust cover one; 402. Motor two; 403. Bevel gear three; 404. Transmission chamber; 405. Limiting shaft; 406. Lead screw; 407. Bevel gear four; 408. Lifting frame; 5. Opposing rotation drive assembly; 501. Dust cover two; 502. Motor three; 503. Synchronous pulley one; 504. Rotating shaft one; 505. Fixed shaft one; 506. Connecting pipe 1; 507. Embossing roller 1; 508. Connecting shaft 1; 509. Synchronous pulley 2; 510. Synchronous belt 1; 511. Synchronous pulley 3; 512. Connecting shaft 2; 513. Synchronous pulley 4; 514. Synchronous belt 2; 515. Rotating shaft 2; 516. Fixed shaft 2; 517. Connecting pipe 2; 518. Embossing roller 2; 519. Synchronous pulley 5; 520. Connecting shaft 3; 521. Synchronous pulley 6; 522. Gear 1; 523. Gear 2; 524. Slide rail; 525. Guide shaft; 526. Slider; 527. Spring; 528. Connecting shaft 4; 529. Synchronous pulley 7; 530. Auxiliary shaft; 531. Synchronous belt 3. Detailed Implementation

[0048] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0050] Example 1:

[0051] like Figures 1 to 4 As shown, a paper towel production roller embossing machine is characterized by comprising: a fixed base plate 1, a fixed base 2, a support frame displacement assembly 3, an embossing thickness adjustment assembly 4, and a counter-rotating drive assembly 5; the fixed base 2 is fixedly connected to the top of the fixed base plate 1, the support frame displacement assembly 3 is disposed inside the fixed base 2, the embossing thickness adjustment assembly 4 is disposed inside the support frame displacement assembly 3, and the counter-rotating drive assembly 5 is disposed on one side of the support frame displacement assembly 3.

[0052] The support frame displacement assembly 3 includes: a support frame 302, a bidirectional lead screw 304, and a motor 306. A groove 301 is provided at the top of the fixed base 2. The support frame 302 is slidably connected to the top of the fixed base 2. A connecting frame 303 is fixedly connected to the bottom of the support frame 302. The connecting frame 303 is slidably connected to the groove 301. The bidirectional lead screw 304 is rotatably connected to the inner side of the fixed base 2. The bidirectional lead screw 304 is threadedly connected to the connecting frame 303. The outer side of the bidirectional lead screw 304 is fixedly connected to a bevel gear 305. The motor 306 is fixedly installed at the top of the fixed base plate 1. A bevel gear 307 is fixedly connected to one end of the drive shaft of the motor 306. The bevel gear 307 meshes with the bevel gear 305.

[0053] The start motor 306 drives the drive shaft to rotate the bevel gear 305. The bevel gear 305 drives the bevel gear 307 to rotate the double-acting screw 304. Because the threads at both ends of the double-acting screw 304 are opposite, it can drive the left and right support frames 302 to move away from each other or move closer together through the connecting frame 303 restricted by the slide groove 301. When the support frames 302 move away from each other, the embossing roller 507 and the embossing roller 518 can be removed from the outside of the fixed shaft 505 and the fixed shaft 516, which is convenient for cleaning and maintenance of the embossing roller 507 and the embossing roller 518. When the support frames 302 move closer together, the embossing roller 507 and the embossing roller 518 can be completely installed and fixed, which is convenient for subsequent embossing.

[0054] The embossing thickness adjustment component 4 includes: a dust cover 401, a motor 402, a limiting shaft 405, a lead screw 406, and a lifting frame 408. The dust cover 401 is fixedly connected to the top of the support frame 302. There are two motors 402, both of which are fixedly installed inside the dust cover 401. The two motors 402 are controlled and started by the same controller. One end of the drive shaft of the motor 402 is fixedly connected to a bevel gear 403. A transmission chamber 404 is opened inside the support frame 302. The limiting shaft 405 is fixedly connected to the inside of the transmission chamber 404. The lead screw 406 is rotatably connected to the inside of the transmission chamber 404. A bevel gear 407 is fixedly connected to the top of the lead screw 406. The bevel gear 407 meshes with the bevel gear 403. The lifting frame 408 is threadedly connected to the outside of the lead screw 406. The lifting frame 408 is slidably connected to the transmission chamber 404 and the limiting shaft 405.

[0055] When the thickness of the embossed tissue changes, motor 2 402 can be started to drive the bevel gear 3 403 to rotate. The bevel gear 3 403 drives the bevel gear 407 and the lead screw 406 to rotate. The lead screw 406 drives the lifting frame 408, which is limited by the limiting shaft 405, to adjust its height, thereby adjusting the distance between embossing roller 1 507 and embossing roller 2 518.

[0056] The opposing rotation drive assembly 5 includes: a second dust cover 501, a third motor 502, a first rotating shaft 504, a first embossing roller 507, a first connecting shaft 508, a first synchronous belt 510, a second connecting shaft 512, a second synchronous belt 514, a second rotating shaft 515, a second embossing roller 518, a third connecting shaft 520, a first gear 522, a second gear 523, a slide rail 524, a slider 526, a spring 527, a fourth connecting shaft 528, an auxiliary shaft 530, and a third synchronous belt 531. The second dust cover 501 is fixedly connected to one side of the support frame 302. There are two third motors 502, both of which are fixedly installed inside the bottom of the second dust cover 501. The two second motors 502 are controlled and started by the same controller. One end of the drive shaft of the third motor 502 is fixedly connected to a first synchronous pulley 503. A rotating shaft 504 is rotatably connected to the inner side of the support frame 302. A fixed shaft 505 is fixedly connected to the adjacent side of the rotating shaft 504. The fixed shaft 505 has a hexagonal cross-section. An embossing roller 507 is disposed between the fixed shafts 505. Connecting pipes 506 are fixedly connected to both ends of the embossing roller 507. Connecting pipes 506 are slidably connected to the outer side of the fixed shaft 505. A connecting shaft 508 is fixedly connected to the opposite end of the rotating shaft 504. Synchronous pulleys 509 and 511 are fixedly connected to the outer side of the connecting shaft 508. A synchronous belt 510 is sleeved on the outer side of synchronous pulleys 503 and 509. A connecting shaft 512 is rotatably connected to one side of the support frame 302. A synchronous pulley 51 is fixedly connected to the outer side of the connecting shaft 512. 3. Synchronous belt 2 514 is sleeved on the outside of synchronous pulley 3 511 and synchronous pulley 4 513. Rotary shaft 2 515 is rotatably connected to the inside of lifting frame 408. Fixed shaft 2 516 is fixedly connected to one side of rotary shaft 2 515. Fixed shaft 2 516 has a hexagonal cross-section. Synchronous pulley 519 is fixedly connected to the other end of rotary shaft 2 515. Embossing roller 2 518 is set between fixed shaft 2 516. Connecting pipe 2 517 is fixedly connected to both ends of embossing roller 2 518. Connecting pipe 2 517 is slidably connected to the outside of fixed shaft 2 516. Connecting shaft 3 520 is rotatably connected to one side of support frame 302. Synchronous pulley 6 521 is fixedly connected to the outside of connecting shaft 3 521. Gear 1 522 is fixedly connected to the outside of connecting shaft 2 512. Gear 2 523 is fixedly connected to the outside of connecting shaft 2 512. A fixed connection is made to the outside of the connecting shaft 3 520. Gear 2 523 meshes with gear 1 522. Slide rail 524 is fixedly connected to one side of support frame 302. Guide shaft 525 is fixedly connected to the inside of slide rail 524. Slider 526 is slidably connected to the inside of slide rail 524 and slidably connected to guide shaft 525. Spring 527 is sleeved on the outside of guide shaft 525 and fixedly connected between slide rail 524 and slider 526. Spring 527 has a built-in damper. Connecting shaft 4 528 is fixedly connected to one side of slider 526. One end of connecting shaft 4 528 is rotatably connected to synchronous pulley 7 529. Auxiliary shaft 530 is rotatably connected to one side of support frame 302. Synchronous belt 3 531 is sleeved on the outside of synchronous pulley 519, synchronous pulley 6 521, synchronous pulley 7 529 and auxiliary shaft 530.

[0057] When the distance between embossing roller 1 507 and embossing roller 2 518 changes, the distance between synchronous pulley 519 and synchronous pulley 6 521 also changes.

[0058] When the distance between synchronous pulley 519 and synchronous pulley 621 increases, the tensile force on synchronous belt 331 increases. Synchronous belt 331 pulls synchronous pulley 729, causing slider 526 to slide within slide rail 524, compressing spring 527. Spring 527 stably supports slider 526, allowing synchronous belt 331 to be tightly fitted onto the outside of synchronous pulley 519, synchronous pulley 621 and synchronous pulley 729. When synchronous belt 331 rotates, spring 527 has its own damper, which can reduce the vibration caused by the rotation of synchronous belt 331, making the operation of the fitted belt more stable.

[0059] When the distance between synchronous pulley 519 and synchronous pulley 621 becomes shorter, the tension on synchronous belt 331 decreases, spring 527 extends, pushing slider 526 to slide within slide rail 524, so that synchronous pulley 729 supports synchronous belt 331, allowing synchronous belt 331 to be tightly fitted around the outside of synchronous pulleys 519, 621, and 729. Furthermore, when synchronous belt 331 rotates, spring 527 has its own damper, which can reduce the vibration caused by the rotation of synchronous belt 331, making the connection and operation more stable.

[0060] The tissue is inserted between embossing roller 1 (507) and embossing roller 2 (518). The drive motor 3 (502) drives its drive shaft to rotate synchronous wheel 1 (503) in the forward direction. Synchronous wheel 1 (503) drives synchronous wheel 2 (509) to rotate via synchronous belt 1 (510), causing rotating shaft 1 (504) and synchronous wheel 3 (511) to rotate in the forward direction, causing embossing roller 1 (507) to rotate in the forward direction. Synchronous wheel 3 (511) drives synchronous wheel 4 (513) and gear 1 (522) to rotate in the forward direction via synchronous belt 2 (514). Gear 1 (522) drives meshing gear 2 (523) to rotate in the reverse direction. Gear 3 (523) drives synchronous wheel 7 (521) to rotate in the reverse direction. Synchronous wheel 7 (521) drives synchronous wheel 5 (519) to rotate in the reverse direction via synchronous belt 3 (531), causing rotating shaft 2 (515) to drive embossing roller 2 (518) to rotate in the reverse direction. Finally, the synchronous counter-rotation between embossing roller 1 (507) and embossing roller 2 (518) is completed, allowing embossing to be applied to both sides of the tissue.

[0061] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and components is omitted in the specific implementation of this disclosure. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0062] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller embossing machine for paper towel production, characterized in that, include: The components include a fixed base plate (1), a fixed base (2), a support frame displacement assembly (3), an embossing thickness adjustment assembly (4), and a counter-rotating drive assembly (5). The fixed base (2) is fixedly connected to the top of the fixed base plate (1), the support frame displacement assembly (3) is located inside the fixed base (2), the embossing thickness adjustment assembly (4) is located inside the support frame displacement assembly (3), and the counter-rotating drive assembly (5) is located on one side of the support frame displacement assembly (3).

2. The paper towel production roller embossing machine according to claim 1, characterized in that: The support frame displacement assembly (3) includes: The support frame (302) has a sliding groove (301) at the top of the fixed base (2), the support frame (302) is slidably connected to the top of the fixed base (2), and a connecting frame (303) is fixedly connected to the bottom of the support frame (302). The connecting frame (303) is slidably connected to the sliding groove (301). A bidirectional lead screw (304) is rotatably connected to the inner side of a fixed base (2), and the bidirectional lead screw (304) is threadedly connected to a connecting frame (303). The outer side of the bidirectional lead screw (304) is fixedly connected to a bevel gear (305). Motor 1 (306) is fixedly installed on the top of the fixed base plate (1). One end of the drive shaft of Motor 1 (306) is fixedly connected to a bevel gear 2 (307), which meshes with bevel gear 1 (305).

3. The paper towel production roller embossing machine according to claim 1, characterized in that: The embossing thickness adjustment component (4) includes: Dust cover one (401), the dust cover one (401) is fixedly connected to the top of the support frame (302); Motor 2 (402), there are two motors (402) and both are fixedly installed inside the dust cover 1 (401). The two motors (402) are controlled and started by the same controller. One end of the drive shaft of the motor 2 (402) is fixedly connected to a bevel gear 3 (403). The limiting shaft (405) is provided, and the transmission chamber (404) is provided inside the support frame (302). The limiting shaft (405) is fixedly connected to the inside of the transmission chamber (404). A lead screw (406) is rotatably connected to the inside of the transmission chamber (404). A bevel gear four (407) is fixedly connected to the top of the lead screw (406), and the bevel gear four (407) meshes with the bevel gear three (403). The lifting frame (408) is threadedly connected to the outside of the lead screw (406), and the lifting frame (408) is slidably connected to the transmission chamber (404) and the limiting shaft (405).

4. The paper towel production roller embossing machine according to claim 3, characterized in that: The opposing rotation drive assembly (5) includes: Dust cover two (501), the dust cover two (501) is fixedly connected to one side of the support frame (302); Motor 3 (502), there are two motors 3 (502) and both are fixedly installed inside the bottom of dust cover 2 (501). The two motors 2 (402) are controlled and started by the same controller. One end of the drive shaft of motor 3 (502) is fixedly connected to synchronous pulley 1 (503). A rotating shaft (504) is rotatably connected to the inner side of the support frame (302). A fixed shaft (505) is fixedly connected to the adjacent side of the rotating shaft (504). The fixed shaft (505) has a hexagonal cross-section. Embossing roller 1 (507) is disposed between fixed shaft 1 (505). Connecting pipe 1 (506) is fixedly connected to both ends of embossing roller 1 (507). Connecting pipe 1 (506) is slidably connected to the outside of fixed shaft 1 (505). Connecting shaft one (508) is fixedly connected to one end of rotating shaft one (504) away from it. Synchronous pulley two (509) and synchronous pulley three (511) are fixedly connected to the outside of the connecting shaft one (508). Synchronous belt one (510), which is sleeved on the outside of synchronous pulley one (503) and synchronous pulley two (509); Connecting shaft two (512) is rotatably connected to one side of the support frame (302), and a synchronous pulley four (513) is fixedly connected to the outside of the connecting shaft two (512); Synchronous belt two (514), which is sleeved on the outside of synchronous pulley three (511) and synchronous pulley four (513); Rotary shaft two (515) is rotatably connected to the inner side of the lifting frame (408). A fixed shaft two (516) is fixedly connected to one side of the rotating shaft two (515). The fixed shaft two (516) has a hexagonal cross-section. A synchronous pulley five (519) is fixedly connected to the other end of the rotating shaft two (515). Embossing roller two (518) is disposed between fixed shaft two (516). Connecting pipe two (517) is fixedly connected to both ends of the embossing roller two (518). The connecting pipe two (517) is slidably connected to the outside of fixed shaft two (516). A connecting shaft three (520) is rotatably connected to one side of the support frame (302), and a synchronous pulley six (521) is fixedly connected to the outside of the connecting shaft three (520); Gear 1 (522), which is fixedly connected to the outside of connecting shaft 2 (512); Gear 2 (523), which is fixedly connected to the outside of connecting shaft 3 (520), and meshes with gear 1 (522); A slide rail (524) is fixedly connected to one side of the support frame (302), and a guide shaft (525) is fixedly connected to the inner side of the slide rail (524); A slider (526) is slidably connected to the inner side of the slide rail (524) and slidably connected to the guide shaft (525); A spring (527) is sleeved on the outside of the guide shaft (525) and fixedly connected between the slide rail (524) and the slider (526). The spring (527) has a built-in damper. Connecting shaft four (528) is fixedly connected to one side of slider (526), ​​and one end of connecting shaft four (528) is rotatably connected to synchronous wheel seven (529); An auxiliary shaft (530) is rotatably connected to one side of a support frame (302); Synchronous belt three (531) is sleeved on the outside of synchronous pulley five (519), synchronous pulley six (521), synchronous pulley seven (529) and auxiliary shaft (530).

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