Resistance self-adjusting process and system

Abstract

The invention provides a self-resistance-adjusting process. The self-resistance-adjusting process comprises the following steps that S1, a supporting roller with the outer wall wound with a film roll is placed on a supporting base; s2, a synchronous part abuts against the top of the film roll, and a resistance part abuts against the top of a supporting roller; s3, a first sliding part and a second sliding part are movably connected to the vertical supporting column in a sleeving mode; s4, synchronous wheels are arranged at the top and the bottom of the supporting column, a synchronous belt is movably connected between the two synchronous wheels in a sleeving mode, and the first sliding piece and the second sliding piece are connected to the two sides of the synchronous belt correspondingly; s5, a conduction rod is vertically and movably arranged on the sliding cylinder with the fixed position, the bottom of the conduction rod is connected with the top of the resistance part, and the conduction rod is movably sleeved with a movable sleeve; s6, a transmission disc is fixedly arranged on the outer wall of the conduction rod, and the transmission disc is located between the sliding cylinder and the movable sleeve; and S7, an elastic piece which is continuously in a compressed state is arranged between the transmission disc and the movable sleeve.

Description

Technical Field

[0001] The invention belongs to the technical field of unwinding, and relates to a self-resistance adjustment process and system. Background Art

[0002] In the processing or use of some film materials, there are usually some winding and rewinding processes. For example, in the production process of tarpaulins, waterproof rolls, and woven bags, the wound film products need to be pulled out from the support rollers and then carried out subsequent corresponding processing, such as cutting, slitting, etc. Summary of the invention

[0003] The purpose of the present invention is to provide a self-resistance adjustment process and system, aiming to provide a new resistance adjustment process.

[0004] In order to achieve the above technical effects, the present invention provides a self-resistance adjustment process, comprising the following steps:

[0005] S1, placing a support roller with a film roll wrapped around its outer wall on a support seat;

[0006] S2, the synchronous member is pressed against the top of the film roll, and the resistance member is pressed against the top of the supporting roller;

[0007] S3, movably sleeve the first sliding member and the second sliding member on the vertical support column, and make the first sliding member higher than the second sliding member;

[0008] S4, synchronous wheels are arranged at the top and bottom of the support column, a synchronous belt is movably sleeved between the two synchronous wheels, and the first sliding member and the second sliding member are respectively connected to the two sides of the synchronous belt;

[0009] S5, vertically and movably set a conducting rod on the fixed sliding cylinder, connect the bottom of the conducting rod with the top of the resistance member, movably sleeve a movable sleeve on the conducting rod, and connect the side of the movable sleeve with the second sliding member, while making the movable sleeve higher than the sliding cylinder;

[0010] S6, a transmission disc is fixedly arranged on the outer wall of the transmission rod, and the transmission disc is located between the sliding cylinder and the movable sleeve;

[0011] S7, an elastic member which is continuously in a compressed state is arranged between the transmission disk and the movable sleeve. As the usage of the film roll on the support roller increases, the height of the synchronization member decreases, and the heights of the second sliding member and the movable sleeve increase. This reduces the pressure applied by the movable sleeve to the transmission disk through the elastic member, and at the same time reduces the resistance applied by the resistance member to the support roller.

[0012] The present invention is further configured such that a connecting arm is provided on the side of the movable sleeve, and the connecting arm is vertically movable through the transmission disk, and an anti-slip portion is provided at the bottom of the connecting arm, and before the synchronous member is lowered to the lowest height, the top of the anti-slip portion abuts against the bottom of the transmission disk, and the synchronous member and the first sliding member raise the second sliding member, the movable sleeve, the transmission disk, the conduction rod and the resistance member through the synchronous belt, so that the resistance member is separated from the support roller.

[0013] The present invention is further configured such that a first positioning mechanism for fixing the position of the conduction rod is provided at the top of the sliding cylinder, and when the synchronous member contacts the top of the support roller, the first positioning mechanism fixes the position of the conduction rod, and the resistance member is higher than the top of the support roller.

[0014] The present invention is further configured such that an unlocking mechanism for unlocking the first positioning mechanism is provided on the side of the sliding cylinder, and a buffering mechanism for buffering the conduction rod is provided inside the sliding cylinder. When the unlocking mechanism unlocks the first positioning mechanism, the buffering mechanism provides upward resistance to slow down the downward movement speed of the conduction rod.

[0015] The present invention is further configured such that a second positioning mechanism for fixing the angle of the synchronization wheel at the top is provided at the top of the support column, and when the second positioning mechanism fixes the angle of the synchronization wheel, the synchronization member is at the highest height and is higher than the top of the film roll.

[0016] The present invention also discloses a system for implementing a self-resistance adjustment process as described in any one of the above items, comprising:

[0017] Two supporting seats are arranged opposite to each other, the top of each supporting seat is provided with a supporting groove, the supporting groove is used to support a supporting roller, and a film roll is wound around the outer wall of the supporting roller, and both ends of the supporting roller are located at the outer ends of the film roll;

[0018] A synchronous member, the synchronous member abutting against the top of the film roll;

[0019] A resistance member, the resistance member abutting against the top of the support roller;

[0020] An L-shaped extension frame, the bottom of which is connected to the top of the support seat, an extension plate is horizontally arranged on the top, and a support column is vertically arranged on the top of the extension plate;

[0021] Synchronous wheels, two synchronous wheels are arranged on the side of the support column and are distributed up and down, and synchronous belts are movably sleeved on the two synchronous wheels;

[0022] A first sliding member and a second sliding member lower than the first sliding member, the first sliding member and the second sliding member are both vertically movably sleeved on the support column, and the first sliding member and the second sliding member are connected to two sides of the synchronous belt;

[0023] An L-shaped first linkage arm, wherein the bottom end of the first linkage arm is connected to the top of the synchronous member, and the top end is connected to the first sliding member;

[0024] A sliding cylinder, the sliding cylinder is vertically fixedly disposed on the side of the extension plate;

[0025] A transmission rod, the transmission rod vertically passes through the sliding cylinder, and the outer wall of the transmission rod is movably attached to the sliding cylinder, the outer wall of the transmission rod is fixedly provided with a transmission plate higher than the sliding cylinder, and the bottom end of the transmission rod is fixedly connected to the top of the resistance member;

[0026] A movable sleeve, the movable sleeve is movably sleeved on the conducting rod, and a second linkage arm is provided between the movable sleeve and the second sliding member;

[0027] An elastic member which is continuously in a compressed state, wherein the top of the elastic member is connected to the movable sleeve, and the bottom of the elastic member is connected to the transmission disc.

[0028] The present invention is further configured such that the longitudinal cross-sections of the synchronous member and the resistance member are both in the shape of an arc opening downward, and a plurality of drag reduction columns are rotatably arranged on the inner wall of the synchronous member, and a set distance is provided between adjacent drag reduction columns, the inner wall of the resistance member is provided with an arc-shaped resistance portion, and the resistance portion is attached to the top of the support roller, and two support columns are vertically arranged on the extension plate, the first sliding member and the second sliding member are movably sleeved on the two support columns, both ends of the synchronous wheel are rotatably connected to the two support columns, a stabilizing groove is provided on the outer wall of the synchronous wheel, and the synchronous belt is movably engaged with the stabilizing groove, a stabilizing arm is horizontally arranged on the side of the extension plate away from the sliding cylinder, and a cylindrical stabilizing cylinder is vertically arranged on the free end of the stabilizing arm, the first linkage arm vertically moves through the stabilizing cylinder, and the outer wall of the first linkage arm movably fits the stabilizing cylinder.

[0029] The present invention is further configured such that a connecting arm is vertically arranged on the side of the movable sleeve, an anti-dropping portion having a diameter larger than that of the connecting arm is arranged at the bottom of the connecting arm, the connecting arm movably passes through the transmission disk, and the outer wall of the connecting arm movably fits the transmission disk, a first positioning mechanism for fixing the position of the conduction rod is arranged on the sliding cylinder, and an unlocking mechanism for unlocking the position of the conduction rod is arranged on the side of the sliding cylinder;

[0030] The synchronizer includes a first state, a second state, a third state, a fourth state, a fifth state and a sixth state;

[0031] When the synchronous member is in the first state, the bottom of the synchronous member abuts against the top of the film roll, the height of the synchronous member is h1, the resistance member abuts against the top of the supporting roller, and the length of the elastic member is s1;

[0032] When the synchronous member is in the second state, the synchronous member, the first linkage arm and the first sliding member move downward, and the second sliding member, the second linkage arm, the movable sleeve, the joint arm and the anti-slip portion move upward through the synchronous belt;

[0033] When the synchronous member is in the third state, the synchronous member moves downward and is higher than the supporting roller, the top of the anti-slip portion contacts the bottom of the transmission disk, and the second sliding member, the second linkage arm, the movable sleeve, the joint arm, the transmission disk, the conduction rod and the resistance member all move upward;

[0034] When the synchronous member is in the fourth state, the synchronous member contacts the top of the supporting roller, and the first positioning mechanism fixes the position of the conducting rod;

[0035] When the synchronizer is in the fifth state, the synchronizer is at the highest height position, and the height of the synchronizer is h2, and the length of the elastic member is s2, wherein h2>h1, s2<s1;

[0036] When the synchronous member is in the sixth state, the unlocking mechanism unlocks the conduction rod, and the conduction rod moves downward until it contacts the top of the support roller.

[0037] The present invention is further configured such that the guide rod includes a first cylindrical portion, a square portion and a second cylindrical portion which are sequentially connected from top to bottom, the transmission plate and the movable sleeve are both connected to the first cylindrical portion, the cross section of the square portion is rectangular, and the square portion movably passes through the sliding cylinder, a terminating groove is provided on a side of the square portion away from the extension plate, and a passing groove is provided on a side close to the extension plate, the terminating groove is communicated with the passing groove, and the longitudinal cross-sectional area of ​​the terminating groove is larger than the longitudinal cross-sectional area of ​​the passing groove;

[0038] The first positioning mechanism includes a magnetic body arranged at the top of the sliding cylinder, the magnetic body is located between the square portion and the extension plate, a terminating portion matched with the terminating groove is horizontally movably arranged in the terminating groove, and a passing portion matched with the passing groove is arranged on the side of the terminating portion, when the synchronizer is in the fourth state, the passing portion is magnetically attracted by the magnetic body and extends out of the passing groove, and the bottom of the passing portion abuts against the top of the sliding cylinder, and the terminating portion abuts against the inner wall of one side of the terminating groove close to the extension plate;

[0039] The unlocking mechanism comprises a movable opening and a buffer opening vertically opened at the top of the sliding cylinder, the movable opening passes through the side of the sliding cylinder away from the extension plate, one side of the buffer opening is communicated with the inner side of the movable opening, and the other side is attached to the outer wall of the square portion, the cross section of the buffer opening is an eight-shaped opening facing the square portion, an unlocking rod is horizontally arranged on the side of the terminating portion away from the extension plate, the unlocking rod movably passes through the movable opening, an operating rod is vertically arranged on the top of the free end of the unlocking rod, a sliding sleeve is sleeved on the outer wall of the operating rod, and the sliding sleeve can move relative to the operating rod up and down;

[0040] A buffer mechanism is also provided in the sliding cylinder, and the buffer mechanism includes a buffer member, the cross section of the buffer member is an equilateral triangle, and one side of the buffer member is connected to the termination portion, and the unlocking rod is connected to the middle part of the buffer member, and the sliding sleeve is pulled to make the buffer member movably fit the inner wall of the buffer port;

[0041] A return opening is provided vertically through the unlocking rod, and an elastic return piece is vertically arranged at the bottom of the movable opening, the elastic return piece is made of elastic material, and an arc-shaped guide portion is arranged on the top of the elastic return piece. During the downward movement of the unlocking rod, the inner wall of the return opening close to the buffer component abuts against the upper side of the guide portion, and drives the free end of the elastic return piece to move in a direction away from the buffer component. When the square portion is at the lowest height, the buffer component is higher than the bottom of the buffer opening, and the elastic return piece is vertically attached to the side of the return opening close to the buffer component, the buffer component and the inner wall of the buffer opening are separated, and the passing portion and the sliding cylinder are separated.

[0042] The present invention is further configured such that a second positioning mechanism for fixing the angle of the synchronous wheel located at the top is provided at the top of the support column, the second positioning mechanism comprises an elastic column provided at the top of the first sliding member on the side away from the first linkage arm, a linkage block is provided at the top of the elastic column on the side close to the first linkage arm, the top of the linkage block is inclined at one end close to the first linkage arm, and the bottom is horizontal, an unlocking portion is provided at the top of the elastic column on the side away from the first linkage arm, and the unlocking portion and the elastic column form an L shape;

[0043] A Z-shaped operating handle is provided on one side of the synchronous wheel at the top, and an L-shaped locking arm is provided on the other side, a locking column is horizontally provided at the free end of the locking arm, and the free end of the locking column faces the synchronous wheel, an L-shaped pressing frame is provided on the top of the support column, and a pressing wheel is provided on the top of the pressing frame for vertical rotation, and the bottom of the pressing wheel presses the synchronous belt at the top to fit the synchronous wheel;

[0044] During the process of raising the first sliding member, the operating handle drives the synchronous wheel to rotate, and the locking arm drives the locking column to move, so that the locking column contacts the inclined part at the top of the linkage block, and drives the linkage block to move in the direction away from the first linkage arm. When the second sliding member is raised to the highest point, the locking column passes over the linkage block, and the linkage block moves toward the first linkage arm under the elastic force of the elastic column until the bottom of the linkage block is attached to the upper side of the locking column.

[0045] Compared with the prior art, the present invention provides a self-resistance adjustment process. When the film roll on the pulling support roller is subsequently processed, the support roller with the film roll wrapped around its outer wall is first placed on the support seat; then the synchronous member is abutted against the top of the film roll, and the resistance member is abutted against the top of the support roller; and the first sliding member and the second sliding member are movably sleeved on the vertical support column, and the first sliding member is higher than the second sliding member; synchronous wheels are arranged on the top and bottom of the support column, and a synchronous belt is movably sleeved between the two synchronous wheels, and the first sliding member and the second sliding member are respectively connected to the two sides of the synchronous belt; a conduction rod is vertically and movably arranged on the fixed sliding cylinder, the bottom of the conduction rod is connected to the top of the resistance member, a movable sleeve is movably sleeved on the conduction rod, and the side of the movable sleeve is connected to the second sliding member, and the movable sleeve is higher than the sliding cylinder;

[0046] Afterwards, a transmission disk is fixedly set on the outer wall of the conduction rod, and the transmission disk is located between the sliding cylinder and the movable sleeve; an elastic member that is continuously in a compressed state is set between the transmission disk and the movable sleeve. As the usage of the film roll on the supporting roller increases, the height of the synchronization member decreases, and the heights of the second sliding member and the movable sleeve increase, which reduces the pressure applied by the movable sleeve to the transmission disk through the elastic member, and at the same time reduces the resistance applied to the supporting roller by the resistance member.

[0047] When the film roll is just being pulled, its diameter is large, and its mass and inertia are also greater. Therefore, if the pulling stops or the pulling force is reduced, the film roll can release new film under the action of inertia. However, when the diameter of the film roll is large, the height of the synchronization part is high, and the height of the resistance part is low. Therefore, the degree to which the interactive sleeve compresses the elastic part downward is greater, and the friction force on the support roller is greater, so that the support roller can stop moving faster. That is, the larger the diameter of the film roll, the greater the friction force on the support roller. Therefore, no matter whether the diameter of the film roll is large or small, when the pulling stops or the pulling force is reduced, the support roller can be subjected to adaptive resistance, and can better prevent the release of too much film, ensuring that subsequent processing can proceed normally. Conventional support rollers usually have damping structures at both ends to increase the resistance to the support roller's rotation and keep the film in a tensioned state. However, the resistance applied to the support roller by this damping structure is usually fixed, so when the film roll is heavy, it is difficult to adapt to reduce the excessive release of the film; and when the film is light, it is easy to generate excessive resistance, and even cause the film to deform or even break. In the present application, not only can the corresponding friction force be applied as the film roll weight changes, but also the film can be prevented from breaking or deforming when the film is light, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of a self-regulating resistance system of the present invention when in use;

[0049] Figure 2 yes Figure 1 A magnified view of part A;

[0050] Figure 3 yes Figure 1 A magnified view of part B;

[0051] Figure 4 yes Figure 1 Enlarged view of part C;

[0052] Figure 5 yes Figure 1 A magnified view of part D in the middle;

[0053] Figure 6 yes Figure 1 Enlarged view of part E in the middle;

[0054] Figure 7 It is a structural schematic diagram of a self-adjusting resistance system of the present invention;

[0055] Figure 8 yes Figure 7 Enlarged view of part F;

[0056] Fig. 9It is a schematic diagram of a locking column locking linkage block part in a self-adjusting resistance system of the present invention;

[0057] Fig.10 A cross-sectional view of a self-regulating resistance system of the present invention Figure 1 ;

[0058] Fig.11 yes Fig.10 Enlarged view of section G;

[0059] Fig.12 A cross-sectional view of a self-regulating resistance system of the present invention Figure 2 ;

[0060] Fig.13 yes Fig.12 Enlarged view of section H;

[0061] Fig.14 is a schematic diagram of a first sliding member in a self-adjusting resistance system of the present invention;

[0062] Fig.15 is a schematic diagram of a second sliding member in a self-adjusting resistance system of the present invention;

[0063] Fig.16 It is a schematic diagram of a sliding cylinder in a self-adjusting resistance system of the present invention;

[0064] Fig.17 It is a schematic diagram of the interior of a sliding cylinder in a self-adjusting resistance system of the present invention;

[0065] Fig.18 It is a schematic diagram of a termination part in a self-regulating resistance system of the present invention;

[0066] Fig.19 It is an internal schematic diagram of a conduction rod in a self-regulating resistance system of the present invention.

[0067] Among them, 1, support seat; 2, support groove; 3, support roller; 4, film roll; 5, synchronous member; 6, resistance member; 7, extension frame; 8, extension plate; 9, support column; 10, synchronous wheel; 11, synchronous belt; 12, first sliding member; 13, second sliding member; 14, first linkage arm; 15, sliding cylinder; 16, transmission rod; 16a, first cylindrical part; 16b, square part; 16c, second cylindrical part; 17, transmission plate; 18, movable sleeve; 19, second linkage arm; 20, elastic member; 21, drag reduction column; 22, resistance part; 23. Stabilizing arm; 24. Stabilizing cylinder; 25. Connecting arm; 26. Anti-slip portion; 27. Termination groove; 28. Passing groove; 29. ​​Magnetic body; 30. Termination portion; 31. Passing portion; 32. Movable opening; 33. Buffer opening; 34. Unlocking lever; 35. Operating lever; 36. Sliding sleeve; 37. Buffering member; 38. Return opening; 39. Elastic return piece; 40. Guide portion; 41. Elastic column; 42. Linkage block; 43. Unlocking portion; 44. Operating handle; 45. Locking arm; 46. Locking column; 47. Clamping frame; 48. Clamping wheel. DETAILED DESCRIPTION

[0068] The following is a further detailed description of a self-resistance adjustment process and system proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, which are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar components.

[0069] A self-adjusting resistance process (reference Figures 1 to 19 ), including the following steps:

[0070] S1, placing a support roller 3 with a film roll 4 wrapped around its outer wall (the film roll 4 and the support roller 3 are not within the scope of protection claimed in the present application and are only cited here for auxiliary explanation) on a support seat 1;

[0071] S2, the synchronization member 5 is pressed against the top of the film roll 4, and the resistance member 6 is pressed against the top of the support roller 3;

[0072] S3, the first sliding member 12 and the second sliding member 13 are connected by a movable sleeve 18 on the vertical support column 9, and the first sliding member 12 is higher than the second sliding member 13;

[0073] S4, synchronous wheels 10 are arranged at the top and bottom of the support column 9, a movable sleeve 18 is connected to the synchronous belt 11 between the two synchronous wheels 10, and the first sliding member 12 and the second sliding member 13 are respectively connected to the two sides of the synchronous belt 11;

[0074] S5, vertically and movably set a conducting rod 16 on the fixed sliding cylinder 15, connect the bottom of the conducting rod 16 with the top of the resistance member 6, connect a movable sleeve 18 with a movable sleeve 18 on the conducting rod 16, and connect the side of the movable sleeve 18 with the second sliding member 13, and make the movable sleeve 18 higher than the sliding cylinder 15;

[0075] S6, a transmission plate 17 is fixedly arranged on the outer wall of the transmission rod 16, and the transmission plate 17 is located between the sliding cylinder 15 and the movable sleeve 18;

[0076] S7, an elastic member 20 which is continuously in a compressed state is provided between the transmission disk 17 and the movable sleeve 18. As the usage of the film roll 4 on the support roller 3 increases, the height of the synchronization member 5 decreases, and the heights of the second sliding member 13 and the movable sleeve 18 increase. This reduces the pressure applied by the movable sleeve 18 to the transmission disk 17 through the elastic member 20, and at the same time reduces the resistance applied by the resistance member 6 to the support roller 3.

[0077] A connecting arm 25 is provided on the side of the movable sleeve 18, and the connecting arm 25 is vertically movable through the transmission disk 17. At the same time, an anti-slip portion 26 is provided at the bottom of the connecting arm 25. Before the synchronous member 5 is lowered to the lowest height, the top of the anti-slip portion 26 abuts against the bottom of the transmission disk 17, and the synchronous member 5 and the first sliding member 12 raise the second sliding member 13, the movable sleeve 18, the transmission disk 17, the conduction rod 16 and the resistance member 6 through the synchronous belt 11, so that the resistance member 6 is separated from the support roller 3.

[0078] A first positioning mechanism for fixing the position of the conduction rod 16 is provided at the top of the sliding cylinder 15 . When the synchronizer 5 contacts the top of the support roller 3 , the first positioning mechanism fixes the position of the conduction rod 16 , and the resistance member 6 is higher than the top of the support roller 3 .

[0079] An unlocking mechanism for unlocking the first positioning mechanism is provided on the side of the sliding cylinder 15 , and a buffering mechanism for buffering the conduction rod 16 is provided inside the sliding cylinder 15 . When the unlocking mechanism unlocks the first positioning mechanism, the buffering mechanism provides an upward resistance to slow down the downward movement speed of the conduction rod 16 .

[0080] A second positioning mechanism for fixing the angle of the synchronous wheel 10 at the top is provided on the top of the support column 9 . When the second positioning mechanism fixes the angle of the synchronous wheel 10 , the synchronous member 5 is at the highest height and is higher than the top of the film roll 4 .

[0081] The present invention also discloses a system for implementing a self-resistance adjustment process as described in any one of the above items, such as Figures 1 to 19 As shown, including:

[0082] Two supporting seats 1 are arranged opposite to each other, and a supporting groove 2 is provided on the top of the supporting seat 1, and the supporting groove 2 is used to support a supporting roller 3, and a film roll 4 is wound on the outer wall of the supporting roller 3, and both ends of the supporting roller 3 are located at the outer ends of the film roll 4;

[0083] A synchronous member 5, wherein the synchronous member 5 abuts against the top of the film roll 4;

[0084] a resistance member 6, wherein the resistance member 6 abuts against the top of the supporting roller 3;

[0085] An L-shaped extension frame 7, the bottom of which is connected to the top of the support seat 1, an extension plate 8 is horizontally arranged on the top, and a support column 9 is vertically arranged on the top of the extension plate 8;

[0086] Synchronous wheels 10, two synchronous wheels 10 are arranged on the side of the support column 9 and are distributed up and down, and the movable sleeves 18 on the two synchronous wheels 10 are connected with synchronous belts 11;

[0087] A first sliding member 12 and a second sliding member 13 lower than the first sliding member 12, wherein the first sliding member 12 and the second sliding member 13 are both connected to the support column 9 by vertical movable sleeves 18, and the first sliding member 12 and the second sliding member 13 are connected to both sides of the synchronous belt 11;

[0088] An L-shaped first linkage arm 14, the bottom end of which is connected to the top of the synchronous member 5, and the top end of which is connected to the first sliding member 12;

[0089] A sliding cylinder 15, wherein the sliding cylinder 15 is vertically fixedly disposed on a side of the extension plate 8;

[0090] A transmission rod 16, wherein the transmission rod 16 movably and vertically passes through the sliding cylinder 15, and the outer wall of the transmission rod 16 movably fits the sliding cylinder 15, and a transmission plate 17 higher than the sliding cylinder 15 is fixedly provided on the outer wall of the transmission rod 16, and the bottom end of the transmission rod 16 is fixedly connected to the top of the resistance member 6;

[0091] A movable sleeve 18, wherein the movable sleeve 18 is connected to the conducting rod 16, and a second linkage arm 19 is provided between the movable sleeve 18 and the second sliding member 13;

[0092] The elastic member 20 is in a continuously compressed state, and the top of the elastic member 20 is connected to the movable sleeve 18 , and the bottom is connected to the transmission plate 17 .

[0093] The longitudinal sections of the synchronous member 5 and the resistance member 6 are both in the shape of an arc with an opening downward, and a plurality of drag reduction columns 21 are rotatably arranged on the inner wall of the synchronous member 5, and a set distance is provided between adjacent drag reduction columns 21. The inner wall of the resistance member 6 is provided with an arc-shaped resistance portion 22, and the resistance portion 22 is attached to the top of the support roller 3. Two support columns 9 are vertically arranged on the extension plate 8, and the first sliding member 12 and the second sliding member 13 are both movably sleeved 18 and connected to the two support columns 9. Both ends of the synchronous wheel 10 are rotatably connected to the two support columns 9. A stabilizing groove is provided on the outer wall of the synchronous wheel 10, and the synchronous belt 11 is movably engaged with the stabilizing groove. A stabilizing arm 23 is horizontally arranged on the side of the extension plate 8 away from the sliding cylinder 15, and a cylindrical stabilizing cylinder 24 is vertically arranged on the free end of the stabilizing arm 23. The first linkage arm 14 vertically moves through the stabilizing cylinder 24, and the outer wall of the first linkage arm 14 is movably attached to the stabilizing cylinder 24.

[0094] A connecting arm 25 is vertically arranged on the side of the movable sleeve 18, and an anti-slip portion 26 with a diameter larger than that of the connecting arm 25 is arranged at the bottom of the connecting arm 25. The connecting arm 25 movably passes through the transmission plate 17, and the outer wall of the connecting arm 25 movably fits the transmission plate 17. A first positioning mechanism for fixing the position of the transmission rod 16 is arranged on the sliding cylinder 15, and an unlocking mechanism for unlocking the position of the transmission rod 16 is arranged on the side of the sliding cylinder 15;

[0095] The synchronizer 5 includes a first state, a second state, a third state, a fourth state, a fifth state and a sixth state;

[0096] When the synchronous member 5 is in the first state, the bottom of the synchronous member 5 abuts against the top of the film roll 4, the height of the synchronous member 5 is h1, the resistance member 6 abuts against the top of the supporting roller 3, and the length of the elastic member 20 is s1;

[0097] When the synchronous member 5 is in the second state, the synchronous member 5, the first linkage arm 14 and the first sliding member 12 move downward, and the second sliding member 13, the second linkage arm 19, the movable sleeve 18, the associated arm 25 and the anti-slip portion 26 move upward through the synchronous belt 11;

[0098] When the synchronous member 5 is in the third state, the synchronous member 5 moves downward and is higher than the supporting roller 3, the top of the anti-slip portion 26 contacts the bottom of the transmission disc 17, and the second sliding member 13, the second linkage arm 19, the movable sleeve 18, the associated arm 25, the transmission disc 17, the conduction rod 16 and the resistance member 6 all move upward;

[0099] When the synchronous member 5 is in the fourth state, the synchronous member 5 contacts the top of the supporting roller 3, and the first positioning mechanism fixes the position of the conducting rod 16;

[0100] When the synchronizer 5 is in the fifth state, the synchronizer 5 is at the highest height position, and the height of the synchronizer 5 is h2, and the length of the elastic member 20 is s2, wherein h2>h1, s2<s1;

[0101] When the synchronous member 5 is in the sixth state, the unlocking mechanism unlocks the conduction rod 16 , and the conduction rod 16 moves downward until it contacts the top of the support roller 3 .

[0102] The guide rod includes a first cylindrical portion 16a, a square portion 16b and a second cylindrical portion 16c which are sequentially connected from top to bottom, the transmission plate 17 and the movable sleeve 18 are both connected to the first cylindrical portion 16a, the cross section of the square portion 16b is rectangular, and the square portion 16b movably passes through the sliding cylinder 15, a terminating groove 27 is provided on the side of the square portion 16b away from the extension plate 8, and a passing groove 28 is provided on the side close to the extension plate 8, the terminating groove 27 is communicated with the passing groove 28, and the longitudinal cross-sectional area of ​​the terminating groove 27 is larger than the longitudinal cross-sectional area of ​​the passing groove 28;

[0103] The first positioning mechanism includes a magnetic body 29 disposed at the top of the sliding cylinder 15, the magnetic body 29 is located between the square portion 16b and the extension plate 8, a terminating portion 30 is horizontally movably disposed in the terminating groove 27 and matched with the terminating groove 27, and a through portion 31 is disposed on the side of the terminating portion 30 and matched with the through groove 28, when the synchronizer 5 is in the fourth state, the through portion 31 is magnetically attracted by the magnetic body 29 and extends out of the through groove 28, and the bottom of the through portion 31 abuts against the top of the sliding cylinder 15, and the terminating portion 30 abuts against the inner wall of the terminating groove 27 close to the extension plate 8;

[0104] The unlocking mechanism includes a movable opening 32 and a buffer opening 33 vertically opened at the top of the sliding cylinder 15, the movable opening 32 passes through the side of the sliding cylinder 15 away from the extension plate 8, one side of the buffer opening 33 is communicated with the inner side of the movable opening 32, and the other side is attached to the outer wall of the square portion 16b, the cross section of the buffer opening 33 is an eight-shaped opening facing the square portion 16b, an unlocking rod 34 is horizontally arranged on the side of the terminating portion 30 away from the extension plate 8, the unlocking rod 34 movably passes through the movable opening 32, an operating rod 35 is vertically arranged on the top of the free end of the unlocking rod 34, a sliding sleeve 36 is sleeved on the outer wall of the operating rod 35, and the sliding sleeve 36 can move relative to the operating rod 35 up and down;

[0105] A buffer mechanism is also provided in the sliding cylinder 15, and the buffer mechanism includes a buffer member 37, the cross section of the buffer member 37 is an equilateral triangle, and one side of the buffer member 37 is connected to the end portion 30, and the unlocking rod 34 is connected to the middle of the buffer member 37, and the sliding sleeve 36 is pulled to make the buffer member 37 fit the inner wall of the buffer opening 33;

[0106] A return opening 38 is vertically provided through the unlocking rod 34, and an elastic return piece 39 is vertically provided at the bottom of the movable opening 32. The elastic return piece 39 is made of elastic material, and a circular arc-shaped guide portion 40 is provided on the top of the elastic return piece 39. During the downward movement of the unlocking rod 34, the inner wall of the return opening 38 close to the buffer 37 abuts against the upper side of the guide portion 40, and drives the free end of the elastic return piece 39 to move in the direction away from the buffer 37. When the square portion 16b is at the lowest height, the buffer 37 is higher than the bottom of the buffer opening 33, and the elastic return piece 39 is vertically attached to the side of the return opening 38 close to the buffer 37. The buffer 37 is separated from the inner wall of the buffer opening 33, and the passing portion 31 is separated from the sliding cylinder 15.

[0107] The top of the support column 9 is provided with a second positioning mechanism for fixing the angle of the synchronous wheel 10 located at the top, and the second positioning mechanism includes an elastic column 41 arranged on the top of the first sliding member 12 away from the first linkage arm 14 side, and a linkage block 42 is arranged on the top of the elastic column 41 close to the first linkage arm 14. The top of the linkage block 42 is inclined at one end close to the first linkage arm 14, and the bottom is horizontal (more accurately, it is an arc shape with an opening downward, so that when the linkage block 42 is buckled with the locking column 46, the bottom of the entire linkage block 42 can be attached to the top of the locking column 46, thereby further ensuring the position of the locking column 46). The top of the elastic column 41 is provided with an unlocking portion 43 on the side away from the first linkage arm 14, and the unlocking portion 43 and the elastic column 41 form an L shape;

[0108] A Z-shaped operating handle 44 is provided on one side of the synchronous wheel 10 at the top, and an L-shaped locking arm 45 is provided on the other side. A locking column 46 is horizontally provided at the free end of the locking arm 45, and the free end of the locking column 46 faces the synchronous wheel 10. An L-shaped pressing frame 47 is provided on the top of the support column 9, and a pressing wheel 48 is provided on the top of the pressing frame 47 for vertical rotation. The bottom of the pressing wheel 48 presses the synchronous belt 11 at the top to fit the synchronous wheel 10.

[0109] During the process of raising the first sliding member 12, the operating handle 44 drives the synchronous wheel 10 to rotate, and the locking arm 45 drives the locking column 46 to move, and makes the locking column 46 contact the inclined part at the top of the linkage block 42, and drives the linkage block 42 to move in the direction away from the first linkage arm 14. When the second sliding member 13 is raised to the highest point, the locking column 46 passes over the linkage block 42, and the linkage block 42 moves toward the first linkage arm 14 under the elastic force of the elastic column 41 until the bottom of the linkage block 42 is attached to the upper side of the locking column 46.

[0110] The present invention provides a self-resistance adjustment process and system. When the film roll 4 on the pulling support roller 3 is subsequently processed, the support roller 3 with the film roll 4 wrapped around its outer wall is first placed on the support seat 1; then the synchronous member 5 is pressed against the top of the film roll 4, and the resistance member 6 is pressed against the top of the support roller 3; and a movable sleeve 18 is connected to the first sliding member 12 and the second sliding member 13 on the vertical support column 9, and the first sliding member 12 is higher than the second sliding member 13; synchronous wheels 10 are arranged at the top and bottom of the support column 9, and the movable sleeve 18 is connected to the synchronous belt 11 between the two synchronous wheels 10, and the first sliding member 12 and the second sliding member 13 are respectively connected to the two sides of the synchronous belt 11; a conduction rod 16 is vertically and movably arranged on a fixed sliding cylinder 15, and the bottom of the conduction rod 16 is connected to the top of the resistance member 6, and the movable sleeve 18 is connected to the movable sleeve 18 on the conduction rod 16, and the side of the movable sleeve 18 is connected to the second sliding member 13, and the movable sleeve 18 is higher than the sliding cylinder 15;

[0111] Afterwards, a transmission disk 17 is fixedly set on the outer wall of the conduction rod 16, and the transmission disk 17 is located between the sliding cylinder 15 and the movable sleeve 18; an elastic member 20 that is continuously in a compressed state is set between the transmission disk 17 and the movable sleeve 18. As the usage of the film roll 4 on the support roller 3 increases, the height of the synchronization member 5 decreases, and the heights of the second sliding member 13 and the movable sleeve 18 increase, the pressure applied to the transmission disk 17 by the movable sleeve 18 through the elastic member 20 is reduced, and at the same time, the resistance applied to the support roller 3 by the resistance member 6 is reduced.

[0112] When the film roll 4 is just being pulled, its diameter is relatively large, and its mass and inertia are also relatively large. Therefore, if the pulling stops or the pulling force is reduced, the film roll 4 can release new film under the action of inertia. However, when the diameter of the film roll 4 is relatively large, the height of the synchronization member 5 is relatively high, and the height of the resistance member 6 is relatively low. Therefore, the degree to which the interactive sleeve compresses the elastic member 20 downward is also greater, and at the same time, the friction force on the support roller 3 is also greater, so that the support roller 3 can stop moving faster. That is, the larger the diameter of the film roll 4, the greater the friction force on the support roller 3. Therefore, no matter whether the diameter of the film roll 4 is relatively large or relatively small, when the pulling stops or the pulling force is reduced, the support roller 3 can be subjected to adaptive resistance, and can better prevent the release of excessive film, thereby ensuring that subsequent processing can proceed normally. Conventional support rollers 3 usually have damping structures at both ends to increase the resistance to the rotation of support rollers 3 and keep the film in a tensioned state. However, the resistance applied to support rollers 3 by such damping structures is usually fixed, so when the film roll 4 is of large mass, it is difficult to adaptably reduce the excessive release of the film; and when the film is small, it is easy to generate excessive resistance, and even cause the film to deform or even break. In the present application, not only can the corresponding friction force be applied as the mass of the film roll 4 changes, but also the film can be prevented from breaking or deforming when the film is small, and the use effect is better.

[0113] In the actual production process, the initial state is set as the synchronizer 5 against the top of the film roll 4, and the resistance member 6 is attached to the top of the support roller 3. Then, as the film is used more, the diameter of the film roll 4 decreases, the synchronizer 5 moves downward and the movable sleeve 18 moves upward, gradually reducing the resistance to the support roller 3. At a certain node, the synchronizer 5 drops to a set height position (for example, it drops to 1 / 5 of the maximum drop height), at which time the anti-slip portion 26 hits the bottom of the transmission disk 17, and then as the synchronizer 5 continues to rise, the synchronizer 5 can raise the height of the resistance member 6 (the sum of the mass of the synchronizer 5, the first linkage arm 14, and the first sliding member 12 is greater than the sum of the mass of the resistance member 6, the second linkage arm 19, and the second sliding member 13); at this time, the mass of the film roll 4 is already very small, so its inertia is very small, the support roller 3 can generate resistance with the inner wall of the support groove 2, and the synchronizer 5 can continue to generate resistance to the film roll 4, so that the entire film roll 4 can release the film stably without causing the film to be pulled to deformation or breakage. Moreover, there are a number of drag-reducing columns 21 on the lower side of the synchronizer 5. When the diameter of the film roll 4 is large, the synchronizer 5 mainly contacts the top of the film roll 4 through the drag-reducing columns 21. At this time, the synchronizer 5 mainly plays the role of controlling the height of the movable sleeve 18, so the smaller the friction between the synchronizer 5 and the film roll 4, the better. At the same time, since the pressure between the synchronizer 5 and the film roll 4 is also large at this time, the drag-reducing columns 21 can also prevent the film roll 4 from being damaged or deformed. However, with the use of the film roll 4, the subsequent synchronizer 5 is attached to the top of the film roll 4 through its own lower side, or contacts the top of the film roll 4 through its own lower side and a few drag-reducing columns 21. At this time, since the extrusion force between the synchronizer 5 and the film roll 4 is small, the film roll 4 can be better prevented from being broken or deformed. At the same time, since the resistance member 6 is separated from the support roller 3, the synchronizer 5 itself is attached to the top of the film roll 4, which can also increase the friction applied to the film roll 4, thereby preventing the film roll 4 from being released too much. At the same time, the resistance portion 22 at the bottom of the resistance member 6 has the characteristics of large friction coefficient and wear resistance, so the requirements for the elastic member 20 are relatively low, and the requirements for the subsequent rotation of the operating handle 44 are also lower.

[0114] During the rising process of the resistance member 6, the square portion 16b, the end portion 30, the passing portion 31, the unlocking rod 34, the operating rod 35, the sliding sleeve 36, etc. all move upward; when the film roll 4 is released, the synchronization member 5 drops to the lowest height, and the passing portion 31 just moves to the top of the sliding cylinder 15. Under the magnetic attraction of the magnetic body 29, the passing portion 31 and the end portion 30 move toward the direction of the magnetic body 29 until the end portion 30 hits the inner wall of the end groove 27 close to the passing groove 28, and the lower side of the passing portion 31 is slightly higher than or hits the top of the sliding cylinder 15.

[0115] Then, the operating handle 44 is rotated to drive the top synchronous wheel 10 to rotate, and the synchronous belt 11 on the top of the synchronous wheel 10 is pressed against the synchronous wheel 10 by the clamping wheel 48, thereby ensuring the synchronization between the synchronous wheel 10 and the synchronous belt 11. In this way, during the rotation of the synchronous wheel 10, the first sliding member 12 can be driven upward and the second sliding member 13 can be driven downward (but at this time, the square portion 16b and the transmission plate 17 do not descend). During the rise of the first sliding member 12, the locking arm 45 and the locking column 46 do not interact with the first sliding member 12 and the linkage block 42. Until the first sliding member 12 approaches the highest height, the locking column 46 swings under the driving action of the locking arm 45, and acts on the inclined part of the top of the linkage block 42 which is in the raised state at a certain node, and the locking column 46 applies a force to the linkage block 42 to move away from the first linkage arm 14 through the inclined slope at the top of the linkage block 42, and at the same time, the elastic column 41 is elastically deformed; until the first sliding member 12 moves to the highest height, the locking column 46 just passes over the linkage block 42 and moves to the lower side of the linkage block 42. At this time, under the elastic restoring force of the elastic column 41, the linkage block 42 moves to the upper side of the locking column 46. At this time, the length of the elastic member 20 reaches the minimum value, so the movable sleeve 18 has the maximum upward force, and the first sliding member 12 has the maximum downward force, and the locking column 46 also has the maximum upward swinging force, but because the locking column 46 and the linkage block 42 are interlocked, the locking column 46 cannot swing upward, and the linkage block 42 cannot move downward, so at this time the positions of the synchronous member 5 and the resistance member 6 are stable, and at this time due to the effect of the through portion 31, the resistance member 6 is higher than the height of the support roller 3, and the synchronous member 5 at the highest height is also higher than the maximum diameter The top of the film roll 4, so at this time it is not only convenient to take the support roller 3 out of the support groove 2 (the support groove 2 is preferably a groove with a very small depth, and the downstream side of the support groove 2 has a limit block for limiting the support roller 3; in this way, during use, the support roller 3 is clamped at the top by the arc-shaped resistance part 22, the bottom by the arc-shaped support groove 2, and the downstream side is limited by the limit block, so the position stability of the support roller 3 can be guaranteed; at the same time, according to actual conditions, columns that reduce resistance and wear can be provided on the inner wall of the support groove 2), but it is also convenient to insert the new support roller 3 wrapped with the film roll 4 into the support groove 2.

[0116] After the new support roller 3 and film roll 4 are placed, the worker bends the unlocking part 43 outward, so that the linkage block 42 moves to the side of the locking column 46. At this time, the synchronizing part 5 moves downward under the elastic force of the elastic part 20 until it fits on the top of the film roll 4. Then the worker holds the sliding sleeve 36 and pulls the sliding sleeve 36 outward; at this time, the sliding sleeve 36 pulls the buffer 37, the end part 30 and the through part 31 in the direction away from the magnetic body 29 through the operating rod 35 and the unlocking rod 34; in addition, the worker applies an outward pulling force to the sliding sleeve 36, so that the outer walls of the two sides of the buffer 37 are respectively movable and fit on the inner walls of the two sides of the buffer opening 33.

[0117] At this time, under the elastic force of the elastic member 20, the square portion 16b moves downward, and the elastic force of the elastic member 20 is relatively large; however, since the two sides of the buffer member 37 are in contact with the inner wall of the buffer opening 33, the inner wall of the buffer opening 33 can generate an upward friction force on the buffer member 37, and to a certain extent slow down the speed of the contoured portion moving downward, that is, it plays a buffering role to prevent excessive impact between the resistance portion 22 and the support roller 3. The sliding sleeve 36 and the operating rod 35 can slide up and down relatively, so the worker only needs to pull the sliding sleeve 36 outward, and the operating rod 35 can automatically move downward without the worker's hand moving downward. When the resistance portion 22 hits the top of the support roller 3, the transmission disc 17 is still higher than the sliding cylinder 15.

[0118] During the downward movement of the unlocking rod 34, at a certain node the inner wall of the return opening 38 hits the upper side of the guide portion 40. Since the guide portion 40 is arc-shaped, the free end of the elastic return piece 39 can be driven by the guide portion 40 to swing in the direction away from the first linkage arm 14. When the unlocking rod 34 moves to the lowest height, the worker releases the sliding sleeve 36. At this time, the elastic return piece 39 applies a force to the unlocking rod 34 in the direction of the first linkage arm 14, and causes the unlocking rod 34, the operating rod 35, the buffer member 37, the terminating portion 30 and the passing portion 31 to move in the direction of the first linkage arm 14. Finally, at the elastic When the return piece 39 returns to the vertical state, the buffer 37 is separated from the inner wall of the buffer port 33, the through portion 31 is separated from the sliding cylinder 15 (the hole wall on it), and the end portion 30 is higher than the bottom of the buffer port 33, so that the unlocking rod 34, the operating rod 35, the sliding sleeve 36, the buffer 37, the end portion 30 and the through portion 31 are not affected by the outside (the effect of the elastic return piece 39 can be ignored), so that when the square portion 16b is raised again later, it can be more convenient to reduce the wear of the contactable parts (such as the buffer 37 and the buffer port 33, the through portion 31 and the sliding cylinder 15). In the above activities, the end portion 30 always moves to fit the inner wall of the end groove 27 without falling out.

[0119] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A self-resistance adjustment process, characterized in that: The following steps are involved: S1, placing a support roller (3) with a film roll (4) wound around its outer wall on a support seat (1); S2, the synchronization member (5) is pressed against the top of the film roll (4), and the resistance member (6) is pressed against the top of the support roller (3); S3, movably sleeve (18) the first sliding member (12) and the second sliding member (13) on the vertical support column (9), and make the first sliding member (12) higher than the second sliding member (13); S4, synchronous wheels (10) are arranged at the top and bottom of the support column (9), a movable sleeve (18) is connected to the synchronous belt (11) between the two synchronous wheels (10), and the first sliding member (12) and the second sliding member (13) are respectively connected to the two sides of the synchronous belt (11); S5, vertically and movably set a conducting rod (16) on the fixed sliding cylinder (15), connect the bottom of the conducting rod (16) with the top of the resistance member (6), connect a movable sleeve (18) on the conducting rod (16), and connect the side of the movable sleeve (18) with the second sliding member (13), and make the movable sleeve (18) higher than the sliding cylinder (15); S6, a transmission disc (17) is fixedly arranged on the outer wall of the transmission rod (16), and the transmission disc (17) is located between the sliding cylinder (15) and the movable sleeve (18); S7, an elastic member (20) which is continuously in a compressed state is provided between the transmission disk (17) and the movable sleeve (18). As the usage of the film roll (4) on the support roller (3) increases, the height of the synchronization member (5) decreases, and the height of the second sliding member (13) and the movable sleeve (18) increases. This reduces the pressure applied by the movable sleeve (18) to the transmission disk (17) through the elastic member (20), and at the same time reduces the resistance applied by the resistance member (6) to the support roller (3).

2. A self-resistance adjustment process according to claim 1, characterized in that: A connecting arm (25) is arranged on the side of the movable sleeve (18), and the connecting arm (25) is vertically movable through the transmission disc (17). At the same time, an anti-slip portion (26) is arranged at the bottom of the connecting arm (25). Before the synchronous member (5) is lowered to the lowest height, the top of the anti-slip portion (26) contacts the bottom of the transmission disc (17), and the synchronous member (5) and the first sliding member (12) raise the second sliding member (13), the movable sleeve (18), the transmission disc (17), the conduction rod (16) and the resistance member (6) through the synchronous belt (11), so that the resistance member (6) is separated from the support roller (3).

3. A self-resistance adjustment process according to claim 2, characterized in that: A first positioning mechanism for fixing the position of the conduction rod (16) is arranged at the top of the sliding cylinder (15). When the synchronization member (5) contacts the top of the support roller (3), the first positioning mechanism fixes the position of the conduction rod (16), and the resistance member (6) is higher than the top of the support roller (3).

4. A self-resistance adjustment process according to claim 3, characterized in that: An unlocking mechanism for unlocking the first positioning mechanism is arranged on the side of the sliding cylinder (15), and a buffering mechanism for buffering the conduction rod (16) is arranged inside the sliding cylinder (15). When the unlocking mechanism unlocks the first positioning mechanism, the buffering mechanism provides an upward resistance to slow down the downward movement speed of the conduction rod (16).

5. A self-resistance adjustment process according to claim 4, characterized in that: A second positioning mechanism for fixing the angle of the synchronous wheel (10) located at the top is arranged at the top of the support column (9); when the second positioning mechanism fixes the angle of the synchronous wheel (10), the synchronous member (5) is at the highest height and is higher than the top of the film roll (4).

6. A system for implementing a self-resistance adjustment process as claimed in any one of claims 1 to 5, characterized in that: include: Two support seats (1) are arranged opposite to each other, the top of each support seat (1) is provided with a support groove (2), the support groove (2) is used to support a support roller (3), and a film roll (4) is wound around the outer wall of the support roller (3), and both ends of the support roller (3) are located at the outer ends of the film roll (4); A synchronous member (5), wherein the synchronous member (5) abuts against the top of the film roll (4); A resistance member (6), wherein the resistance member (6) abuts against the top of the support roller (3); An L-shaped extension frame (7), the bottom of the extension frame (7) is connected to the top of the support seat (1), an extension plate (8) is horizontally arranged on the top, and a support column (9) is vertically arranged on the top of the extension plate (8); Synchronous wheels (10), two synchronous wheels (10) are arranged on the side of the support column (9) and are distributed up and down, and the movable sleeves (18) on the two synchronous wheels (10) are connected to synchronous belts (11); A first sliding member (12) and a second sliding member (13) lower than the first sliding member (12), the first sliding member (12) and the second sliding member (13) are both vertically movable sleeves (18) connected to the support column (9), and the first sliding member (12) and the second sliding member (13) are connected to both sides of the synchronous belt (11); An L-shaped first linkage arm (14), wherein the bottom end of the first linkage arm (14) is connected to the top of the synchronous member (5), and the top end is connected to the first sliding member (12); A sliding cylinder (15), wherein the sliding cylinder (15) is vertically fixedly arranged on a side of the extension plate (8); a transmission rod (16), the transmission rod (16) movably and vertically passes through the sliding cylinder (15), and the outer wall of the transmission rod (16) movably fits the sliding cylinder (15), the outer wall of the transmission rod (16) is fixedly provided with a transmission plate (17) higher than the sliding cylinder (15), and the bottom end of the transmission rod (16) is fixedly connected to the top of the resistance member (6); A movable sleeve (18), wherein the movable sleeve (18) is connected to the conductive rod (16), and a second linkage arm (19) is provided between the movable sleeve (18) and the second sliding member (13); An elastic member (20) which is continuously in a compressed state, wherein the top of the elastic member (20) is connected to the movable sleeve (18), and the bottom of the elastic member (20) is connected to the transmission plate (17).

7. A self-adjusting resistance system according to claim 6, characterized in that: The longitudinal sections of the synchronous member (5) and the resistance member (6) are both in the shape of an arc with an opening downward, and a plurality of drag reduction columns (21) are rotatably arranged on the inner wall of the synchronous member (5), and a set distance is provided between adjacent drag reduction columns (21). The inner wall of the resistance member (6) is provided with an arc-shaped resistance portion (22), and the resistance portion (22) is attached to the top of the support roller (3). Two support columns (9) are vertically arranged on the extension plate (8), and the first sliding member (12) and the second sliding member (13) are both movably sleeved (18) and connected to the two support columns. The synchronous wheel (10) is rotatably connected to the two support columns (9), the two ends of the synchronous wheel (10) are rotatably connected to the two support columns (9), a stabilizing groove is provided on the outer wall of the synchronous wheel (10), the synchronous belt (11) is movably engaged with the stabilizing groove, a stabilizing arm (23) is horizontally arranged on the side of the extension plate (8) away from the sliding cylinder (15), a cylindrical stabilizing cylinder (24) is vertically arranged at the free end of the stabilizing arm (23), the first linkage arm (14) vertically moves through the stabilizing cylinder (24), and the outer wall of the first linkage arm (14) is movably fitted to the stabilizing cylinder (24).

8. The self-resistance regulating system according to claim 6, characterized in that: A connecting arm (25) is vertically arranged on the side of the movable sleeve (18), and an anti-slip portion (26) having a diameter larger than that of the connecting arm (25) is arranged at the bottom of the connecting arm (25); the connecting arm (25) movably passes through the transmission disk (17), and the outer wall of the connecting arm (25) movably fits the transmission disk (17); a first positioning mechanism for fixing the position of the transmission rod (16) is arranged on the sliding cylinder (15), and an unlocking mechanism for unlocking the position of the transmission rod (16) is arranged on the side of the sliding cylinder (15); The synchronizer (5) comprises a first state, a second state, a third state, a fourth state, a fifth state and a sixth state; When the synchronous member (5) is in the first state, the bottom of the synchronous member (5) abuts against the top of the film roll (4), the height of the synchronous member (5) is h1, the resistance member (6) abuts against the top of the supporting roller (3), and the length of the elastic member (20) is s1; When the synchronous member (5) is in the second state, the synchronous member (5), the first linkage arm (14) and the first sliding member (12) move downward, and the second sliding member (13), the second linkage arm (19), the movable sleeve (18), the joint arm (25) and the anti-slip portion (26) move upward through the synchronous belt (11); When the synchronous member (5) is in the third state, the synchronous member (5) moves downward and is higher than the supporting roller (3), the top of the anti-slip portion (26) contacts the bottom of the transmission disc (17), and the second sliding member (13), the second linkage arm (19), the movable sleeve (18), the joint arm (25), the transmission disc (17), the conduction rod (16) and the resistance member (6) all move upward; When the synchronous member (5) is in the fourth state, the synchronous member (5) contacts the top of the supporting roller (3), and the first positioning mechanism fixes the position of the conducting rod (16); When the synchronizer (5) is in the fifth state, the synchronizer (5) is at the highest height position, the height of the synchronizer (5) is h2, and the length of the elastic member (20) is s2, wherein h2>h1, s2<s1; When the synchronous member (5) is in the sixth state, the unlocking mechanism unlocks the conduction rod (16), and the conduction rod (16) moves downward until it contacts the top of the support roller (3).

9. A self-adjusting resistance system according to claim 8, characterized in that: The guide rod comprises a first cylindrical portion (16a), a square portion (16b) and a second cylindrical portion (16c) which are connected in sequence from top to bottom; the transmission plate (17) and the movable sleeve (18) are both connected to the first cylindrical portion (16a); the cross section of the square portion (16b) is rectangular, and the square portion (16b) movably passes through the sliding cylinder (15); a terminating groove (27) is provided on the side of the square portion (16b) away from the extension plate (8), and a passing groove (28) is provided on the side close to the extension plate (8); the terminating groove (27) is communicated with the passing groove (28), and the longitudinal cross-sectional area of ​​the terminating groove (27) is larger than the longitudinal cross-sectional area of ​​the passing groove (28); The first positioning mechanism comprises a magnetic body (29) arranged at the top of the sliding cylinder (15), the magnetic body (29) is located between the square portion (16b) and the extension plate (8), a terminating portion (30) is horizontally movably arranged in the terminating groove (27) and matched with the terminating groove (27), and a passing portion (31) is arranged on the side of the terminating portion (30) and matched with the passing groove (28), when the synchronous member (5) is in the fourth state, the passing portion (31) is magnetically attracted by the magnetic body (29) and extends out of the passing groove (28), and the bottom of the passing portion (31) abuts against the top of the sliding cylinder (15), and the terminating portion (30) abuts against the inner wall of one side of the terminating groove (27) close to the extension plate (8); The unlocking mechanism comprises a movable opening (32) and a buffer opening (33) vertically opened at the top of the sliding cylinder (15); the movable opening (32) penetrates the side of the sliding cylinder (15) away from the extension plate (8); one side of the buffer opening (33) is communicated with the inner side of the movable opening (32), and the other side is attached to the outer wall of the square portion (16b); the cross section of the buffer opening (33) is in an eight-shaped shape with the opening facing the square portion (16b); an unlocking rod (34) is horizontally arranged on the side of the terminating portion (30) away from the extension plate (8); the unlocking rod (34) movably passes through the movable opening (32); an operating rod (35) is vertically arranged on the top of the free end of the unlocking rod (34); a sliding sleeve (36) is sleeved on the outer wall of the operating rod (35); the sliding sleeve (36) can move relative to the operating rod (35) up and down; A buffer mechanism is also provided in the sliding cylinder (15), and the buffer mechanism includes a buffer member (37), the cross section of the buffer member (37) is an equilateral triangle, and one side of the buffer member (37) is connected to the end portion (30), the unlocking rod (34) is connected to the middle of the buffer member (37), and the sliding sleeve (36) is pulled to make the buffer member (37) movably fit the inner wall of the buffer port (33); A return opening (38) is vertically provided through the unlocking rod (34), and an elastic return piece (39) is vertically provided at the bottom of the movable opening (32). The elastic return piece (39) is made of elastic material, and a circular arc-shaped guide portion (40) is provided on the top of the elastic return piece (39). When the unlocking rod (34) moves downward, the inner wall of one side of the return opening (38) close to the buffer (37) contacts the upper side of the guide portion (40), and drives the elastic return piece (39) to return to the original position. The free end of the sheet (39) moves in a direction away from the buffer (37); when the square portion (16b) is at the lowest height, the buffer (37) is higher than the bottom of the buffer opening (33); the elastic return sheet (39) is vertically attached to the side of the return opening (38) close to the buffer (37); the buffer (37) and the inner wall of the buffer opening (33) are separated; and the passing portion (31) and the sliding cylinder (15) are separated.

10. The self-adjusting resistance system according to claim 9, characterized in that: A second positioning mechanism for fixing the angle of the synchronous wheel (10) located at the top is arranged at the top of the support column (9), the second positioning mechanism comprises an elastic column (41) arranged at the top of the first sliding member (12) on the side away from the first linkage arm (14), a linkage block (42) is arranged at the top of the elastic column (41) on the side close to the first linkage arm (14), the top of the linkage block (42) is inclined at one end close to the first linkage arm (14), and the bottom is horizontal, an unlocking portion (43) is arranged at the top of the elastic column (41) on the side away from the first linkage arm (14), and the unlocking portion (43) and the elastic column (41) form an L shape; A Z-shaped operating handle (44) is provided on one side of the synchronous wheel (10) located at the top, and an L-shaped locking arm (45) is provided on the other side. A locking column (46) is horizontally provided at the free end of the locking arm (45), and the free end of the locking column (46) faces the synchronous wheel (10). An L-shaped pressing frame (47) is provided on the top of the support column (9), and a pressing wheel (48) is provided on the top of the pressing frame (47) for vertical rotation. The bottom of the pressing wheel (48) presses the synchronous belt (11) located at the top until it fits the synchronous wheel (10); During the process of raising the first sliding member (12), the operating handle (44) drives the synchronous wheel (10) to rotate, and the locking arm (45) drives the locking column (46) to move, so that the locking column (46) contacts the inclined part at the top of the linkage block (42), and drives the linkage block (42) to move in the direction away from the first linkage arm (14); when the second sliding member (13) is raised to the highest position, the locking column (46) passes over the linkage block (42), and the linkage block (42) moves toward the first linkage arm (14) under the elastic force of the elastic column (41), until the bottom of the linkage block (42) is in contact with the upper side of the locking column (46).

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