Adjustable compression roller mechanism

Abstract

The utility model discloses an adjustable compression roller mechanism, which relates to the field of plate processing and comprises a central shaft, a roller body and a base, the central shaft is fixedly connected with two bearings and penetrates through the two bearings, and the outer walls of the bearings are fixedly connected with the inner wall of the roller body; the two ends of the center shaft are fixedly connected with first bolts, the base is in threaded connection with two fixing bolts, the fixing bolts are in threaded connection with supporting pieces, and the fixing bolts penetrate through the supporting pieces and the base and are in threaded connection with the base. The lower end face of the supporting piece is fixedly connected with a gasket, the gasket is fixedly connected with an adjusting spring, the lower end of the adjusting spring abuts against the first nut, the first bolt sequentially penetrates through the center shaft, the supporting piece, the gasket, the adjusting spring and the first nut, and the first bolt is in threaded connection with the first nut. The device has the effects of conveniently adjusting the height of the compression roller, reducing the use cost, improving the working efficiency and preventing the plate from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing, and in particular to an adjustable pressure roller mechanism. Background Technology

[0002] Pressure rollers are common industrial equipment primarily used for pressing, flattening, or conveying materials. They are applicable to various industries and complex applications. In sheet metal processing, pressure rollers also offer a range of functions: they can vertically fix the sheet metal to prevent movement, press films onto substrates, or perform plastic shaping on materials. When pressure rollers primarily serve a fixing function, they are typically used in conjunction with conveyor belts or other processing equipment to complete the sheet metal processing.

[0003] The pressure roller mainly consists of rollers, bearings, and support frames. The distance between the pressure roller and the conveyor belt can be adjusted according to the thickness of the sheet material. After the conveyor belt starts, the sheet material passes through the gap between the pressure roller and the conveyor belt, moving forward with the conveyor belt. The pressure roller rotates accordingly, thus fixing the sheet material. If the surface of the sheet material is uneven or the thickness of the sheet material changes, the height of the pressure roller needs to be adjusted. Currently, there are two main ways to adjust the height: one is for workers to manually adjust according to the sheet material thickness, first raising the pressure roller to allow the sheet material to pass through, and then lowering it according to the sheet material thickness to press the sheet material firmly. This method is cumbersome and inefficient, and the height adjustment varies each time, resulting in inconsistent pressing force on the sheet material and potentially damaging it. The other method uses sensors to determine the thickness of the sheet material about to pass through the pressure roller, and the height of the pressure roller is controlled in real time by a motor or hydraulic rod. This method is more expensive and has higher costs. Utility Model Content

[0004] To facilitate adjustment of the pressure roller height, reduce operating costs, improve work efficiency, and prevent damage to the sheet metal, this application provides an adjustable pressure roller mechanism.

[0005] This application provides an adjustable pressure roller mechanism, which adopts the following technical solution:

[0006] An adjustable pressure roller mechanism includes a central shaft, a roller body, and a base. The central shaft is fixedly connected to two bearings, which pass through the central shaft. The outer walls of the bearings are fixedly connected to the inner walls of the roller body. The base is threadedly connected to two fixing bolts, which are threadedly connected to a support member. The fixing bolts pass through the support member and the base and are threadedly connected to the base. Both ends of the central shaft are fixedly connected to a first bolt, and the ends of the first bolts are threadedly connected to a first nut. A washer is fixedly connected to the lower end face of the support member, and an adjusting spring is fixedly connected to the washer. The lower end of the adjusting spring abuts against the first nut. The first bolts pass through the central shaft, the support member, the washer, the adjusting spring, and the first nut in sequence.

[0007] By adopting the above technical solution, the fixing bolts secure the support to the base, the first bolt is fixedly connected to the central shaft, and the lower end of the adjusting spring abuts against the first nut. In the initial state, due to the gravity of the roller, the adjusting spring is compressed. When there are protrusions on the surface of the plate, the roller and the first bolt are lifted, and the adjusting spring is further compressed. The adjusting spring applies a downward force to the first bolt, keeping the roller tightly against the plate and preventing displacement. Due to the different degrees of protrusion on the plate, the user can change the degree of compression of the adjusting spring by rotating the first nut. If the plate protrusion is large, the user can rotate the first nut downward to reduce the degree of compression of the adjusting spring. When the protruding part of the plate lifts the roller, the force applied by the adjusting spring to the first bolt becomes relatively smaller, avoiding excessive pressure on the plate from the roller and damage to the plate. When uneven plates pass under the roller, the adjusting spring ensures the fixing effect of the roller on the plate, eliminating the need for repeated manual adjustment of the roller height and improving work efficiency. The entire structure is simple in composition, low in cost, and reduces operating costs.

[0008] Optionally, the roller body surface is provided with several grooves.

[0009] By adopting the above technical solution, the friction between the roller surface and the plate is increased after the groove is opened on the roller surface due to the unevenness of the plate surface, thus strengthening the fixing effect of the roller on the plate.

[0010] Optionally, a leveling nut is fixedly connected to the lower end face of the support member, and a leveling bolt is threadedly connected to the leveling nut. The leveling bolt passes through the leveling nut and the support member, and the end of the leveling bolt abuts against the lower end face of the central shaft.

[0011] By adopting the above technical solution, when the thickness of the board is uneven, the fixing effect of the roller on the board will be affected. The user can adjust the leveling bolts on both sides respectively, so that the leveling bolts lift one end of the central shaft, and finally make the roller parallel to the surface of the board, thereby improving the fixing effect of the roller on the board.

[0012] Optionally, the roller body is slidably connected to two positioning rings. The positioning rings include a first half-ring and a second half-ring. Both ends of the first half-ring are fixedly connected to insert blocks. Both ends of the second half-ring are provided with slots that are adapted to the insert blocks. Positioning holes are provided on both sides of the insert blocks along the width direction of the insert blocks. Two positioning springs are fixedly connected to the insert blocks. The positioning springs are located in the positioning holes and correspond one-to-one with the positioning holes. The other end of each positioning spring is fixedly connected to a hemispherical positioning block. Both ends of the second half-ring are provided with hemispherical positioning grooves that communicate with the slots.

[0013] By adopting the above technical solution, when processing narrower plates, the user can insert the insert block into the slot. The positioning block is hemispherical. When the positioning block is squeezed, the positioning spring is compressed, the insert block enters the slot, the positioning spring extends, and the positioning block enters the positioning groove. The first half-ring and the second half-ring interlock, so that the positioning ring is installed on the roller body. When the width of the plate to be processed is greater than or equal to the length of the roller body, the thickness of the positioning ring will affect the fixing effect of the roller body on the plate. The user applies an outward force to the first half-ring and the second half-ring, the positioning block is squeezed, the positioning spring is compressed again, and finally the insert block leaves the slot, the first half-ring and the second half-ring separate, and the positioning ring is removed without affecting the fixing effect of the roller body.

[0014] Optionally, a positioning motor is fixedly connected to the upper end face of both ends of the central shaft, and a threaded rod is fixedly connected to the output shaft of the positioning motor along the length of the roller. A positioning plate is slidably connected to the central shaft, and the threaded rod passes through the positioning plate and is threadedly connected to the positioning plate. A first telescopic tube is fixedly connected to the upper part of the positioning plate.

[0015] By adopting the above technical solution, when processing narrow plates, in order to prevent the plates from shifting left and right due to unevenness, the user starts the positioning motors at both ends of the central shaft. The positioning motors drive the threaded rod to rotate, causing the positioning plate and the first telescopic tube to move towards the positioning ring along the length of the roller until the first telescopic tube abuts against the positioning ring. One side of the positioning ring abuts against the first telescopic tube, and the other side of the positioning ring abuts against the plate. The two positioning rings on both sides limit the plate in the length of the roller, which can prevent the plate from shifting.

[0016] Optionally, the positioning plate is circular, and a through groove is provided at the lower end of the positioning plate for the central shaft, leveling bolt, and leveling nut to pass through. Two second telescopic tubes are symmetrically fixedly connected to the side of the positioning plate near the bearing.

[0017] By adopting the above technical solution, both the first telescopic tube and the second telescopic tube abut against the positioning ring, so that the positioning ring remains in a vertical state; the positioning plate has a through groove, which increases the range of movement of the positioning plate in the length direction of the roller body, expands the range of movement of the positioning ring, and can be used to fix narrower plates.

[0018] Optionally, both the first telescopic tube and the second telescopic tube include a first short tube, a second short tube, and a third short tube, wherein the second short tube is located inside the first short tube and is threadedly connected to the first short tube, and the third short tube is located inside the second short tube and is threadedly connected to the second short tube.

[0019] By adopting the above technical solution, when the positioning ring is not needed, the sleeve can be shortened, and the positioning motor can be used to move the sleeve away from the pressure roller body. At this time, the sleeve does not affect the normal use of the pressure roller body. When the positioning ring is needed, the second and third short tubes can be rotated out according to the position of the positioning ring, so that the sleeve abuts against the positioning ring and fixes the position of the positioning ring. The first, second, and third short tubes reduce the length of the first and second telescopic tubes after shortening, thus reducing the footprint of the equipment.

[0020] Optionally, the positioning ring has three limiting holes on the side near the positioning motor. The limiting holes are adapted to the first short tube and correspond one-to-one with the first telescopic tube and the second telescopic tube.

[0021] By adopting the above technical solution, after the first and second telescopic tubes are extended, their ends are inserted into the limiting hole. The limiting hole limits the first and second telescopic tubes, making the contact between the first and second telescopic tubes and the positioning ring more stable.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By adjusting the spring settings, when uneven plates pass under the roller, the adjusting spring ensures the roller's fixation of the plate, eliminating the need for repeated manual adjustments to the roller height and improving work efficiency; the first nut can change the compression degree of the adjusting spring, preventing excessive pressure on the plate from damaging it; the entire structure is simple in composition, low in cost, and reduces operating costs.

[0024] 2. By setting up a positioning motor, positioning plate, and positioning ring, the pressure roller body can be used to fix narrow plates, preventing such plates from shifting left and right due to unevenness;

[0025] 3. By using the insert and slot, the positioning ring can be removed when it is not needed, without affecting the fixing effect of the roller; the positioning plate is fixedly connected with the first telescopic tube and the second telescopic tube to keep the positioning ring in a vertical state. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0027] Figure 2 This is an enlarged schematic diagram of the adjusting spring.

[0028] Figure 3 This is a schematic diagram of the overall structure of Example 2.

[0029] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0030] Figure 5This is a cross-sectional view of the positioning ring.

[0031] Figure 6 yes Figure 5 Enlarged schematic diagram of part B.

[0032] Explanation of reference numerals in the attached drawings: 1. Central shaft; 11. Bearing; 12. First bolt; 13. First nut; 2. Roller body; 21. Groove; 3. Base; 31. Fixing bolt; 32. Support; 33. Washer; 34. Leveling nut; 35. Leveling bolt; 4. Adjusting spring; 5. Positioning ring; 51. First half-ring; 52. Second half-ring; 53. Insert block; 54. Slot; 55. Positioning hole; 56. Positioning spring; 57. Positioning block; 58. Positioning groove; 59. Limiting hole; 6. Positioning motor; 61. Threaded rod; 62. Positioning plate; 63. Through groove; 7. First telescopic tube; 71. First short tube; 72. Second short tube; 73. Third short tube; 8. Second telescopic tube. Detailed Implementation

[0033] The present application will be further described in detail below with reference to all the accompanying drawings.

[0034] This application discloses an adjustable pressure roller mechanism.

[0035] Example 1

[0036] Reference Figure 1 and Figure 2 An adjustable pressure roller mechanism includes a central shaft 1, a roller body 2, and a base 3. The base 3 is threaded with two fixing bolts 31, and each fixing bolt 31 is threaded with a support member 32. The fixing bolts 31 pass through the support member 32 and the base 3 and are threadedly connected to the base 3, fixing the support member 32 above the base 3 and maintaining its stability. Both ends of the central shaft 1 are fixedly connected with first bolts 12, and the ends of the first bolts 12 are threaded with first nuts 13. A washer 33 is fixedly connected to the lower end of the support member 32, and an adjusting spring 4 is fixedly connected to the washer 33. The lower end of the adjusting spring 4 abuts against the first nut 13. The weight of the central shaft 1 and the roller body 2, combined with the first nut 13, causes the adjusting spring 4 to be in a compressed state initially. The first bolts 12 sequentially pass through the central shaft 1, support member 32, washer 33, adjusting spring 4, and first nut 13. The support member 32 provides support for the central shaft 1 and the roller body 2, and the central shaft 1 and the roller body 2 can move vertically.

[0037] Reference Figure 2A conveyor belt is installed below roller 2. The sheet material passes through the gap between the conveyor belt and roller 2. When the uneven sheet material passes under roller 2, the protruding parts of the sheet material push roller 2 up, causing the central shaft 1, the first bolt 12, and the first nut 13 to rise together, allowing the protruding parts of the sheet material to pass under roller 2. The first nut 13 abuts against the adjusting spring 4, causing the lower end of the adjusting spring 4 to move upward, further compressing the adjusting spring 4. The adjusting spring 4 applies a downward force to the first bolt 12, strengthening the pressing effect of roller 2 on the sheet material and preventing the sheet material from shifting. The adjusting spring 4 ensures the fixing effect of roller 2 on the sheet material, eliminating the need for repeated manual adjustment of roller 2 height, improving work efficiency. The entire structure is simple in composition, low in cost, and reduces operating costs.

[0038] Reference Figure 1 and Figure 2 The roller body 2 has several grooves 21 on its surface. Due to the unevenness of the plate surface, the grooves 21 can increase the friction between the roller body 2 surface and the plate, thus strengthening the fixing effect of the roller body 2 on the plate. Two bearings 11 are fixedly connected to the central shaft 1. The two bearings 11 pass through the central shaft 1. The outer wall of the bearing 11 is fixedly connected to the inner wall of the roller body 2. When the plate passes under the roller body 2, under the action of friction, the roller body 2 is driven to rotate around the central shaft 1.

[0039] Reference Figure 2 The first bolt 12 is threadedly connected to the first nut 13. The user can change the compression degree of the adjusting spring 4 by rotating the first nut 13. Due to the different degrees of protrusion of the sheet material, if the protrusion degree of the sheet material is large, the compression degree of the adjusting spring 4 and the force exerted by the adjusting spring 4 on the first bolt 12 will be large, which can easily damage the sheet material. At this time, the first nut 13 can be rotated downward to reduce the compression degree of the adjusting spring 4 and the pressing force of the roller 2 on the sheet material, so as to avoid damage to the sheet material. This allows the pressure roller structure to be used for sheet materials with various degrees of concavity and convexity.

[0040] Reference Figure 2 A leveling nut 34 is fixedly connected to the lower end face of the support member 32. A leveling bolt 35 is threaded onto the leveling nut 34. The leveling bolt 35 passes through the leveling nut 34 and the support member 32. The user can rotate the leveling bolt 35 to raise or lower it. The end of the leveling bolt 35 abuts against the lower end face of the central shaft 1. When the leveling bolt 35 moves upward, it lifts the central shaft 1; when the leveling bolt 35 moves downward, the central shaft 1 falls under its own weight. Without adjustment of the leveling bolt 35, the central shaft 1 and roller 2 are parallel to the base 3. When processing boards of uneven thickness, if the roller 2 remains parallel to the base 3, the fixing effect of the roller 2 on the board will be affected. In this case, the user rotates the leveling bolt 35 on the thicker side of the board upward and the leveling bolt 35 on the thinner side downward, keeping the roller 2 parallel to the board surface, thereby improving the fixing effect of the roller 2 on the board.

[0041] The implementation principle of an adjustable pressure roller mechanism according to an embodiment of this application is as follows: A first bolt 12 passes through a central shaft 1, a support 32, a washer 33, an adjusting spring 4, and a first nut 13 in sequence. The upper end of the adjusting spring 4 is fixedly connected to the washer 33, and the lower end of the adjusting spring 4 abuts against the first nut 13. Under the gravity of the central shaft 1 and the roller body 2, the adjusting spring 4 is in a compressed state. When the protruding part of the board passes under the roller body 2, it lifts the roller body 2 and the first bolt 12, and the adjusting spring 4 is further compressed. The adjusting spring 4 applies a downward force to the first bolt 12, so that the roller body 2 is in close contact with the board. The user can change the degree of compression of the adjusting spring 4 by rotating the first nut 13, so that the pressure roller structure is suitable for boards with various degrees of unevenness. The user can rotate the leveling bolts 35 on both sides of the roller body 2 to keep the roller body 2 parallel to the surface of the board, thereby improving the fixing effect of the roller body 2 on the board.

[0042] Example 2

[0043] Reference Figure 3 and Figure 4 Two positioning rings 5 ​​are slidably connected to the roller body 2. The thickness of the positioning rings 5 ​​is sufficient to abut against the plate material, but not to contact the conveyor belt. Positioning motors 6 are fixedly connected to the upper surfaces of both ends of the central shaft 1. A threaded rod 61 is fixedly connected to the output shaft of the positioning motor 6 along the length of the roller body 2. After the positioning motor 6 is started, it can drive the threaded rod 61 to rotate. A positioning plate 62 is slidably connected to the central shaft 1. The threaded rod 61 passes through the positioning plate 62 and is threadedly connected to the positioning plate 62. After the threaded rod 61 rotates, it drives the positioning plate 62 to move along the length of the roller body 2. The positioning plate 62 is circular. A through groove 63 is opened at the lower end of the positioning plate 62, through which the central shaft 1, the leveling bolt 35, and the leveling nut 34 can pass. The through groove 63 limits the positioning plate 62. At the same time, the leveling bolt 35 and the leveling nut 34 do not obstruct the movement of the positioning plate 62, thus expanding the movement range of the positioning plate 62 and enabling the roller body 2 to be used to fix narrower plates.

[0044] Reference Figure 4 and Figure 5A first telescopic tube 7 is fixedly connected to the upper part of the positioning plate 62. Two second telescopic tubes 8 are symmetrically fixedly connected to the side of the positioning plate 62 near the bearing 11. When the positioning plate 62 moves, the first telescopic tube 7 and the second telescopic tube 8 move synchronously with the positioning plate 62 and eventually abut against the positioning ring 5. The first telescopic tube 7 and the second telescopic tube 8 each include a first short tube 71, a second short tube 72, and a third short tube 73. The structure and length of the first telescopic tube 7 and the second telescopic tube 8 are consistent. The tube 8 cooperates to keep the positioning ring 5 in a more stable vertical state; the positioning ring 5 has three limiting holes 59 on the side near the positioning motor 6, the limiting holes 59 are adapted to the first short tube 71, and the limiting holes 59 limit the first short tube 71; the limiting holes 59 correspond one-to-one with the first telescopic tube 7 and the second telescopic tube 8. When the first telescopic tube 7 and the second telescopic tube 8 abut against the positioning ring 5, the first short tube 71 is inserted into the limiting hole 59, so that the abutment of the first telescopic tube 7 and the second telescopic tube 8 against the positioning ring 5 is more stable. When processing narrow boards, the user starts the motor, causing the positioning plate 62, the first telescopic tube 7, and the second telescopic tube 8 to move along the length of the roller body 2 toward the positioning ring 5. At the same time, the position of the positioning ring 5 is adjusted so that the first telescopic tube 7 and the second telescopic tube 8 enter the corresponding limiting holes 59, thereby fixing the position of the positioning ring 5. One side of the positioning ring 5 abuts against the first telescopic tube 7 and the second telescopic tube 8, and the other side of the positioning ring 5 abuts against the board. The two positioning rings 5 ​​abut against the board from both sides to control the position of the board and prevent the board from shifting.

[0045] Reference Figure 5 The first telescopic tube 7 and the second telescopic tube 8 each include a first short tube 71, a second short tube 72, and a third short tube 73. The first short tube 71, the second short tube 72, and the third short tube 73 reduce the length of the first telescopic tube 7 and the second telescopic tube 8 after shortening, thus reducing the footprint of the equipment. The second short tube 72 is located inside the first short tube 71 and is threadedly connected to the first short tube 71. The third short tube 73 is located inside the second short tube 72 and is threadedly connected to the second short tube 72. In use, the user first starts the motor and moves the positioning plate 62 to a position where the first telescopic tube 7 and the second telescopic tube 8 can abut against the positioning ring 5 according to the width of the plate. The length of the first telescopic tube 7 and the second telescopic tube 8 is adjusted by rotating the first short tube 71 and the second short tube 72, so that the first short tube 71 enters the corresponding limiting hole 59 and fixes the position of the positioning ring 5, thereby enabling the first telescopic tube 7 and the second telescopic tube 8 to adapt to plates of different widths.

[0046] Reference Figure 5 and Figure 6The positioning ring 5 includes a first half-ring 51 and a second half-ring 52. Both ends of the first half-ring 51 are fixedly connected to insert blocks 53. Both ends of the second half-ring 52 have slots 54 that fit the insert blocks 53. The first half-ring 51 and the second half-ring 52 are interlocked by the insert blocks 53 and slots 54 and installed on the roller body 2. Positioning holes 55 are formed on both sides of the insert blocks 53 along their width direction. Two positioning springs 56 are fixedly connected to the insert blocks 53. The positioning springs 56 are located within the positioning holes 55 and correspond one-to-one with the positioning holes 55. When the insert block 53 enters the slot 54, the positioning springs 56 are compressed. A hemispherical positioning block 57 is fixedly connected to the other end of each positioning spring 56. When the user inserts the insert block 53 into the slot 54, the second half-ring 52 applies a force tangential to the positioning block 57 through the slot 54. Since the positioning block 57 is hemispherical... When subjected to force, the positioning block 57 will slowly move along the axial direction of the positioning ring 5 and compress the positioning spring 56. As the positioning spring 56 is compressed, the positioning block 57 gradually enters the positioning hole 55. Both ends of the second half ring 52 are provided with hemispherical positioning grooves 58 that are connected to the slot 54. When the user continues to apply force to the insert block 53, the positioning block 57 will no longer be subjected to force when the positioning groove 58 is connected to the positioning hole 55. The positioning spring 56 will return to its original length, allowing the positioning block 57 to enter the positioning groove 58. The insert block 53 and the slot 54 will be locked together, and the positioning ring 5 will be installed on the roller body 2. When the width of the sheet material to be processed is greater than or equal to the length of the roller body 2, the user first rotates the first short tube 71 and the second short tube 72 in the opposite direction to shorten the length of the first telescopic tube 7, starts the motor, and moves the positioning plate 62 and the first telescopic tube 7 away from the top of the roller body 2; then, an outward force is applied to the first half ring 51 and the second half ring 52, the positioning block 57 is squeezed, the positioning spring 56 is compressed accordingly, and finally the positioning block 57 gradually leaves the positioning groove 58, the insert block 53 leaves the slot 54, the first half ring 51 and the second half ring 52 separate, the positioning ring 5 is removed, and the roller body 2 can then be used to press the sheet material with a larger width.

[0047] The implementation principle of an adjustable pressure roller mechanism in this application embodiment is as follows: The user can install two positioning rings 5 ​​on the roller body 2, and then start the positioning motor 6. The positioning plate 62, the first telescopic tube 7, and the second telescopic tube 8 move along the length direction of the roller body 2, so that the first telescopic tube 7 and the second telescopic tube 8 move to a suitable position. The user can unscrew the first short tube 71 and the second short tube 72 as needed. The first short tube 71 is inserted into the limiting hole 59, so that the positioning ring 5 is kept in a stable vertical state. One side of the positioning ring 5 abuts against the first short tube 71, and the other side abuts against the plate. The two positioning rings 5 ​​cooperate with each other and abut against the plate from both sides, thereby fixing the narrow plate and preventing the plate from shifting.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable pressure roller mechanism comprising a central shaft (1), a roller body (2), a base (3), characterized in that: The center shaft (1) is fixedly connected with two bearings (11), the center shaft (1) penetrates the two bearings (11), and the outer wall of the bearing (11) is fixedly connected with the inner wall of the roller body (2); the base (3) is threadedly connected with two fixed bolts (31), the fixed bolt (31) is threadedly connected with a support (32), the fixed bolt (31) penetrates the support (32) and the base (3) and is threadedly connected with the base (3); the two ends of the center shaft (1) are fixedly connected with a first bolt (12), the tail end of the first bolt (12) is threadedly connected with a first nut (13), the lower end surface of the support (32) is fixedly connected with a gasket (33), the gasket (33) is fixedly connected with an adjusting spring (4), the lower end of the adjusting spring (4) abuts against the first nut (13), and the first bolt (12) penetrates the center shaft (1), the support (32), the gasket (33), the adjusting spring (4) and the first nut (13) in sequence.

2. An adjustable pressure roller mechanism according to claim 1, wherein: The roller body (2) is provided with a plurality of grooves (21) on the surface.

3. An adjustable pressure roller mechanism according to claim 1, wherein: The lower end surface of the support (32) is fixedly connected with a leveling nut (34), the leveling nut (34) is threadedly connected with a leveling bolt (35), the leveling bolt (35) penetrates the leveling nut (34) and the support (32), and the tail end of the leveling bolt (35) abuts against the lower end surface of the center shaft (1).

4. An adjustable pressure roller mechanism according to claim 1, wherein: The roller body (2) is slidably connected with two positioning rings (5), the positioning ring (5) comprises a first half ring (51) and a second half ring (52), the two ends of the first half ring (51) are fixedly connected with an insertion block (53), the two ends of the second half ring (52) are provided with an insertion groove (54) matched with the insertion block (53), the two sides of the insertion block (53) are provided with a positioning hole (55) along the width direction of the insertion block (53), the insertion block (53) is fixedly connected with two positioning springs (56), the positioning spring (56) is located in the positioning hole (55) and corresponds to the positioning hole (55) one by one, the other end of the positioning spring (56) is fixedly connected with a hemispherical positioning block (57), and the two ends of the second half ring (52) are provided with a hemispherical positioning groove (58) communicated with the insertion groove (54).

5. An adjustable pressure roller mechanism according to claim 1, wherein: The two ends of the center shaft (1) are fixedly connected with a positioning motor (6), the output shaft of the positioning motor (6) is fixedly connected with a threaded rod (61) along the length direction of the roller body (2), and the center shaft (1) is slidably connected with a positioning plate (62); the threaded rod (61) penetrates the positioning plate (62) and is threadedly connected with the positioning plate (62), and the first telescopic pipe (7) is fixedly connected to the upper portion of the positioning plate (62).

6. An adjustable pressure roller mechanism according to claim 5, wherein: The positioning plate (62) is circular, the lower end of the positioning plate (62) is provided with a through groove (63) for the center shaft (1), the leveling bolt (35), the leveling nut (34) to pass through, and two second telescopic pipes (8) are symmetrically fixedly connected to the side of the positioning plate (62) close to the bearing (11).

7. An adjustable pressure roller mechanism according to claim 6, wherein: The first telescopic pipe (7) and the second telescopic pipe (8) each comprise a first short pipe (71), a second short pipe (72) and a third short pipe (73), the second short pipe (72) is located in the first short pipe (71) and is threadedly connected with the first short pipe (71), and the third short pipe (73) is located in the second short pipe (72) and is threadedly connected with the second short pipe (72).

8. An adjustable pressure roller mechanism according to claim 4, wherein: Three limiting holes (59) are formed in the side of the positioning ring (5) close to the positioning motor (6), the limiting holes (59) are matched with the first short pipe (71), and the limiting holes (59) correspond to the first telescopic pipe (7) and the second telescopic pipe (8) in one-to-one mode.

Images