Roll cutting equipment

Abstract

The utility model discloses a roll cutting device which comprises a rack, a cutting device and a cutting device. The roller cutting assembly comprises a roller cutting part and two roller cutting mounting seats; the two ends of the roller cutting piece are connected to the roller cutting installation bases in a pivoted mode respectively, and the roller cutting installation bases are installed on the machine frame. The compression roller assembly comprises a fixed shaft and two compression joint bearings; the two ends of the fixing shaft are installed on the machine frame and located above the roller cutting piece, the pressing connection bearings are installed on the fixing shaft and located at the two ends of the fixing shaft, and the distance between the fixing shaft and the roller cutting piece and the diameter of each pressing connection bearing are configured to be suitable for enabling the pressing connection bearings to be connected to the surface of the roller cutting piece in a pressing mode. The roller cutting equipment can solve the problem that the cutting degrees of the two sides of a material are inconsistent.

Description

Technical Field

[0001] The utility model relates to the technical field of roll cutting equipment, and particularly relates to a roll cutting equipment. Background Art

[0002] The roll cutting equipment generally includes a frame and a roll cutting knife. The roll cutting knife is installed on the frame through a fixed seat. The roll cutting knife is rotatably connected to the fixed seat, and then the roll cutting knife is driven to rotate by a motor to realize the roll cutting of materials. Among them, the fixed seat is fixed on the frame by adjustable bolts. It is found in the actual use process that when the roll cutting knife cuts materials, at both ends in the length direction of the roll cutting knife, the cutting degrees are inconsistent, resulting in the situation that the materials are adhered, not completely broken, or unable to accurately cut the preset thickness. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background art, and provide a roll cutting equipment which can improve the problem of inconsistent cutting degrees at both ends.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] Technical solution one: A roll cutting equipment, which includes: a frame; a roll cutting assembly, which includes a roll cutting member and two roll cutting mounting seats; both ends of the roll cutting member are respectively pivotally connected to one of the roll cutting mounting seats, and the roll cutting mounting seats are installed on the frame; a pressure roller assembly, which includes a fixed shaft and two press-fitting bearings; both ends of the fixed shaft are installed on the frame and are located above the roll cutting member, the press-fitting bearings are installed on the fixed shaft and are located at both ends of the fixed shaft, and the distance between the fixed shaft and the roll cutting member and the diameter of the press-fitting bearings are configured to be suitable for pressing the press-fitting bearings against the surface of the roll cutting member.

[0006] Technical solution two based on technical solution one: The pressure roller assembly further includes fixing blocks, and each of the press-fitting bearings is clamped and fixed by two fixing blocks located on both sides in its axial direction; the fixing blocks are detachably and fixedly installed on the fixed shaft through fasteners.

[0007] Technical solution three based on technical solution two: The fixing block includes two semi-circular fixing rings, one of the fixing rings is provided with a first threaded hole, and the other fixing ring is locked to the first threaded hole through a first fastener so that the two fixing rings clamp the fixed shaft.

[0008] Technical solution four based on technical solution three: The fixing block is in contact with the balls of its corresponding press-fitting bearing to fix the position of the press-fitting bearing relative to the fixed shaft without restricting the rotation of the press-fitting bearing.

[0009] Technical solution five based on technical solution four: Pressing parts are provided at positions near both ends of the roll cutting part, and the positions of the two pressing bearings in the pressing roller assembly are adapted to be adjusted according to the positions of the pressing parts on the roll cutting part, so that the pressing bearings correspondingly press one of the pressing parts.

[0010] Technical solution six based on technical solution five: The pressing part is a metal strip surrounding the outer circumference of the roll cutting part.

[0011] Technical solution seven based on technical solution six: The frame includes a machine table and two mounting brackets. The two mounting brackets are fixedly installed on the machine table relatively, and the mounting brackets are provided with vertically extending mounting grooves. The two roll cutting mounting seats and both ends of the fixed shaft respectively extend into the mounting grooves of the two mounting brackets and are in limit fit with the mounting grooves.

[0012] Technical solution eight based on technical solution seven: It further includes two fixing components. The fixing components include pressing blocks, threaded seats and fixing bolts. The threaded seat is detachably fixedly installed on the top of the mounting bracket through a second fastener and is provided with a vertically penetrating second threaded hole. The fixing bolt is screwed into the second threaded hole, and its lower end is rotatably connected to the pressing block around the vertical axis. The pressing block is adapted to adjust its height position in the mounting groove through the fixing bolt to press down the end of the fixed shaft.

[0013] Technical solution nine based on technical solution eight: The fixed shaft includes a shaft rod and two shaft end blocks. The two shaft end blocks are fixedly connected to both ends of the shaft rod and are adapted to extend into the mounting groove to cooperate with the pressing block.

[0014] In addition, the present utility model also provides technical solution ten: The roll cutting assembly further includes a driving device, which is power-connected to the roll cutting part of the roll cutting assembly to drive the roll cutting part to rotate.

[0015] As can be seen from the above description of the present utility model, compared with the prior art, the present utility model has the following beneficial effects:

[0016] Technical solution one provides a roll cutting device, which includes a frame, a roll cutting assembly and a pressing roller assembly. The roll cutting part in the roll cutting assembly is installed on the frame through two roll cutting mounting seats, and the pressing bearings in the pressing roller assembly press on the surface of the roll cutting part, thereby improving the problem that the cutting degrees at both axial ends of the roll cutting part are inconsistent during cutting.

[0017] Among them, the utility model person observed and found that the reason for the inconsistent cutting degree in the axial direction of the roll-cutting part is that the roll-cutting part is installed on the frame through the roll-cutting mounting seat. That is to say, only the two ends of the roll-cutting part in the axial direction are stressed. When the axial length of the roll-cutting part is relatively long, the problem of uneven stress at both ends of the roll-cutting part in the axial direction will occur. Reflected in the material cutting, the material will show adhesion on both sides during cutting, incomplete fracture, or the situation where the preset thickness cannot be accurately cut.

[0018] Therefore, in this technical solution, a pressure roller assembly is provided. The pressure roller assembly includes a fixed shaft and two press-fitting bearings. The fixed shaft is located above the roll-cutting part, and the press-fitting bearings are rotatably installed on the fixed shaft, so that the press-fitting bearings can be pressed against the surface of the roll-cutting part. Since the press-fitting bearings directly act on the surface of the roll-cutting part and the fixed shaft does not rotate, it will not vibrate due to rotation. Therefore, the press-fitting bearings can apply a stable force to the surface of the roll-cutting part, and the forces applied by the two press-fitting bearings are the same. These two forces also act on the end positions of the roll-cutting part respectively. The above means cooperate with each other to make the overall stress of the roll-cutting part uniform, and can also ensure the uniform cutting of the material during the high-speed rotation of the roll-cutting part, making the cutting process more stable and reliable, and improving the processing efficiency and safety.

[0019] In Technical Solution 2, the pressure roller assembly further includes a fixing block. The press-fitting bearings are clamped and fixed by the fixing block, and the fixing block is detachably fixed on the fixed shaft, so that the position of the press-fitting bearings on the fixed shaft can be adjusted to adapt to roll-cutting parts of different lengths.

[0020] In Technical Solution 3, the fixing block includes two semi-circular fixing rings. The two fixing rings are detachably connected by fasteners and can be tightened to hold the fixed shaft. This assembly method can adjust the position of the press-fitting bearings without disassembling the pressure roller assembly.

[0021] In Technical Solution 4, the fixing block is in contact with the balls of the press-fitting bearings to avoid affecting the rotation of the press-fitting bearings.

[0022] In Technical Solution 5, a press-fitting part is provided on the roll-cutting part, and the press-fitting bearings are pressed against the press-fitting part, avoiding affecting other parts of the roll-cutting part. At the same time, the surface of the press-fitting part has no cutting edges for roll-cutting and is relatively smooth, so as to improve the evenness of the force applied by the press-fitting bearings to the roll-cutting part.

[0023] In Technical Solution 6, the press-fitting part is a metal strip, which has a relatively high structural strength and can withstand the force applied by the press-fitting bearings.

[0024] In Technical Solution 7, the frame includes a machine table and two mounting brackets. The roll-cutting mounting seat and the fixed shaft can be conveniently installed through the mounting grooves on the mounting brackets.

[0025] In Technical Solution VIII, a fixing component is provided. When installing the pressure roller component, the fixing bolt can be rotated to make the pressing block press against the end of the fixing shaft, and then the roller cutting part is pressed by the press-fitting bearing on the fixing shaft, thereby fixing the roller cutting component and the pressure roller component.

[0026] In Technical Solution IX, the fixing shaft includes a shaft rod and two shaft end blocks. Through the shaft end blocks, the assembly relationship with the installation groove of the mounting frame can be conveniently formed, and it can be conveniently matched with the pressing block.

[0027] In Technical Solution X, the roller cutting component further includes a driving device, and the roller cutting part is driven to rotate by the driving device to perform roller cutting on the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of the roller cutting equipment provided by the embodiment of the present invention;

[0030] Figure 2 For Figure 1 It is a schematic structural diagram of the middle pressure roller component;

[0031] Figure 3 For Figure 1 It is a schematic structural diagram of the middle mounting frame.

[0032] MAIN REFERENCE NUMERAL DESCRIPTION:

[0033] Frame 1; Roller cutting component 2; Roller cutting part 3; Roller cutting mounting seat 4; Pressure roller component 5; Fixing shaft 6; Press-fitting bearing 7; Fixing block 8; Fixing ring 9; First fastener 10; Pressing part 11; Machine table 12; Mounting frame 13; Installation groove 14; Fixing component 15; Pressing block 16; Threaded seat 17; Fixing bolt 18; Shaft rod 19; Shaft end block 20. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are the preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., they are for differentiating different objects rather than for describing a specific order.

[0036] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "longitudinal", "level", "vertical", "top", "bottom", "inner", "outer", "up", "down", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the drawings, and it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present utility model.

[0037] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "fixed connection" or "fixedly connected", it should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrated as one body, and being fixedly connected through other devices or elements.

[0038] In the claims, the description and the above-mentioned drawings of the present utility model, when using terms such as "comprising", "having" and their variants, are intended to mean "including but not limited to".

[0039] Embodiment

[0040] An embodiment of the present utility model provides a roll cutting device. Refer to Figure 1 , the roll cutting device mainly includes a frame 1, a roll cutting assembly 2, a pressure roll assembly 5 and a fixing assembly 15.

[0041] Refer to Figure 1 , the frame 1 includes a machine table 12 and two mounting brackets 13. The two mounting brackets 13 are fixedly installed on the machine table 12 relatively, and the mounting bracket 13 is provided with a vertically extending mounting groove 14.

[0042] Specifically, refer to Figure 1 , the machine table 12 has a table top. The mounting bracket 13 can be fixedly installed on the table top of the machine table 12 by bolts. The two mounting brackets 13 are installed according to a preset orientation. A space for installing the roll cutting assembly 2 and the pressure roll assembly 5 is formed between the two mounting brackets 13, and this space is used for performing the roll cutting operation on the material.

[0043] Refer to Figure 3The mounting frame 13 includes two vertically extending upright poles, and a mounting slot 14 with two sides penetrating therebetween is formed between the two upright poles, and the upper end of the mounting slot 14 is open.

[0044] The roller cutting assembly 2 includes a roller cutting member 3, two roller cutting mounting seats 4, two metal strips for forming a crimping portion 11, and a driving device. The two ends of the roller cutting member 3 are respectively pivoted to one of the roller cutting mounting seats 4, and the roller cutting mounting seats 4 are mounted on the frame 1; the crimping portion 11 is arranged at a position close to the two ends of the roller cutting member 3, and the crimping portion 11 is a metal strip surrounding the outer periphery of the roller cutting member 3. The driving device is connected to the roller cutting member 3 of the roller cutting assembly 2 to drive the roller cutting member 3 to rotate.

[0045] Specifically, refer to Figure 1 The roller cutter 3 is roughly a cylindrical component, which can be regarded as consisting of an internal shaft core and a roller cutter cylinder wrapped outside the shaft core. The two ends of the shaft core extend out of the roller cutter cylinder and are connected to the roller cutter mounting seat 4 through bearings, so that the roller cutter 3 can rotate relative to the roller cutter mounting seat 4. Most of the middle part of the roller cutter 3 in the length direction is its roller cut surface, and a knife edge can be set on the roller cut surface to cut the material through the rolling of the roller cutter 3. At the position of the roller cutter 3 near its two ends, that is, the end position of the roller cutter cylinder, a crimping part 11 is formed by a metal strip arranged around it. The crimping part 11 is used to cooperate with the roller assembly 5 so that the roller cutter 3 is uniformly stressed as a whole. Among them, the crimping part 11 can be set relatively smooth because it is separated from the knife edge on the roller cutter cylinder, thereby improving the coordination effect with the roller assembly 5. In addition, the crimping part 11 adopts a metal strip, which has a higher structural strength and can also improve the ability to withstand force.

[0046] The roller cutting mounting seat 4 is a block-shaped component, and a through opening is provided in the middle thereof, so as to be connected with both ends of the roller cutting member 3 through bearings. The width of the roller cutting mounting seat 4 allows it to extend into the mounting groove 14 of the mounting frame 13 and to be limitedly matched with the mounting groove 14. It should be noted that the roller cutting mounting seat 4 can be provided with an I-shaped structure, so that it can also form a limited match with the mounting groove 14 in the axial direction of the roller cutting member 3, and when installing the roller cutting mounting seat 4, the roller cutting mounting seat 4 can be inserted into the mounting groove 14 from the opening at the upper end of the mounting groove 14.

[0047] The driving device may be a servo motor. The shaft core of the roller cutter 3 may be exposed to the outside of the roller cutter mounting seat 4, and the driving shaft of the servo motor is meshed with the exposed part of the shaft core of the roller cutter 3 through gears to achieve transmission, so that the roller cutter 3 can be driven to rotate through the driving device to achieve rolling cutting of the material by the roller cutter 3.

[0048] The pressure roller assembly 5 includes a fixed shaft 6, two press - fit bearings 7, and four fixing blocks 8. Both ends of the fixed shaft 6 are installed on the frame 1 and are located above the roller cutting part 3. The press - fit bearings 7 are installed on the fixed shaft 6 and are located at both ends of the fixed shaft 6. Moreover, the distance between the fixed shaft 6 and the roller cutting part 3 and the diameter of the press - fit bearings 7 are configured to be suitable for pressing the press - fit bearings 7 against the surface of the roller cutting part 3. Each of the press - fit bearings 7 is clamped and fixed by two fixing blocks 8 located on both sides in its axial direction; the fixing blocks 8 are detachably and fixedly installed on the fixed shaft 6 through fasteners. The fixing block 8 includes two semi - circular fixing rings 9. One of the fixing rings 9 is provided with a first threaded hole, and the other fixing ring 9 is locked to the first threaded hole through a first fastener 10 so that the two fixing rings 9 clamp the fixed shaft 6. The fixing block 8 contacts the balls of its corresponding press - fit bearing 7 to fix the position of the press - fit bearing 7 relative to the fixed shaft 6 while not restricting the rotation of the press - fit bearing 7.

[0049] Among them, the fixed shaft 6 includes a shaft rod 19 and two shaft end blocks 20. The two shaft end blocks 20 are fixedly connected to both ends of the shaft rod 19 and are adapted to extend into the installation groove 14 to cooperate with the pressing block 16.

[0050] Specifically, referring to Figure 1 and Figure 2 , in the pressure roller assembly 5, the fixed shaft 6 is fixedly formed by the shaft rod 19 and two shaft end blocks 20. The shaft rod 19 is a cylindrical rod, and its length is approximately the same as the length of the roller cutting part 3. The shaft end blocks 20 are fixed to both ends of the shaft rod 19 by bolts or other means. The shaft end blocks 20 are block - shaped structures, and they can extend into the installation groove 14 of the installation frame 13 and are in limit cooperation with the installation groove 14. Similarly, the shaft end blocks 20 can be set to have an I - shaped structure so that they can also form a limit cooperation with the installation groove 14 in the axial direction of the shaft rod 19. The shaft end blocks 20 can be inserted into the installation groove 14 through the opening at the upper end of the installation groove 14 to complete the installation of the fixed shaft 6.

[0051] Referring to Figure 2 , the press - fit bearing 7 has an inner ring, balls, and an outer ring. The inner ring is sleeved on the shaft rod 19 of the fixed shaft 6, and the outer ring is used for press - fit cooperation with the press - fit part 11 on the roller cutting part 3. The positions of two of the press - fit bearings 7 are adapted to be adjusted according to the position of the press - fit part 11 on the roller cutting part 3 so that the press - fit bearings 7 correspondingly press - fit one of the press - fit parts 11.

[0052] Referring to Figure 2, the fixing block 8 is used to fix the crimping bearing 7. Each fixing block 8 includes two semi-circular fixing rings 9, and when these two fixing rings 9 are fitted together, they form a complete circular member. Among them, a first threaded hole is provided at the end position of the lower fixing ring 9, and an opening is provided at the end position of the upper fixing ring 9. After docking the ends of the two fixing rings 9, the threaded hole is aligned with the opening, and then the first fastener 10 passes through the opening and is screwed into the threaded hole until the two fixing rings 9 are fastened together. At this time, the two fixing rings 9 cooperate to hold the shaft rod 19 of the fixing shaft 6 tightly, thereby fixing the fixing block 8 on the fixing shaft 6. Two such fixing blocks 8 cooperate to clamp and fix the crimping bearing 7 on the fixing shaft 6. Moreover, through the above-mentioned fixing block 8, the position of the crimping bearing 7 on the fixing shaft 6 can be conveniently adjusted without removing the entire fixing shaft 6 from the mounting bracket 13.

[0053] When the fixing block 8 clamps the crimping bearing 7, the fixing block 8 contacts the balls on the crimping bearing 7, thereby preventing the fixing block 8 from contacting the outer ring of the crimping bearing 7 and avoiding affecting the rotation of the outer ring of the crimping bearing 7.

[0054] Refer to Figure 1 and Figure 3 , the fixing assembly 15 includes a pressing block 16, a threaded seat 17 and a fixing bolt 18; the threaded seat 17 is detachably fixed to the top of the mounting bracket 13 by a second fastener and is provided with a vertically penetrating second threaded hole; the fixing bolt 18 is screwed into the second threaded hole, and its lower end is rotatably connected to the pressing block 16 around the vertical axis; the pressing block 16 is adapted to adjust its height position in the mounting groove 14 through the fixing bolt 18 to press down the end of the fixing shaft 6.

[0055] Specifically, the threaded seat 17 is a block-shaped member, and a second threaded hole is vertically penetrated through the middle position thereof. The second threaded hole is provided with internal threads, and the fixing bolt 18 can be threadedly connected to the second threaded hole. At the same time, the lower end of the fixing bolt 18 is rotatably connected to the pressing block 16. Here, the rotational connection can be to provide a counterbore at the top of the pressing block 16, and the size of the counterbore is approximately adapted to the outer diameter of the fixing bolt 18. Then, the lower end of the fixing bolt 18 is inserted into the counterbore to form a clearance fit between the two, so that the fixing bolt 18 can rotate relative to the pressing block 16. Among them, the width of the pressing block 16 enables it to be inserted into the mounting groove 14, and restricted by the inner side wall of the mounting groove 14, the pressing block 16 cannot rotate in the mounting groove 14 along with the fixing bolt 18.

[0056] During assembly, the roller-cut component 3 can be first installed on the roller-cut mounting seat 4, and then the roller-cut mounting seat 4 can be inserted into the mounting groove 14. After the roller-cut mounting seat 4 is in place, the shaft end block 20 of the fixed shaft 6 is inserted into the mounting groove 14, and the crimping bearing 7 is made to contact the crimping portion 11 on the roller-cut component 3. Then, the pressure block 16 is inserted into the mounting groove 14 so that the pressure block 16 is seated on the shaft end block 20. Then, the fixing bolt 18 is passed through the second threaded hole of the threaded seat 17, and the lower end of the fixing bolt 18 is inserted into the countersunk hole on the pressure block 16. Then, the threaded seat 17 is fixedly installed on the mounting frame 13 through the second fastener, and then the fixing bolt 18 is rotated so that the fixing bolt 18 presses the pressure block 16 downward, and the pressure block 16 then presses the shaft end block 20 of the fixed shaft 6, and the fixed shaft 6 then presses the roller-cut component 3 through the clamping bearing.

[0057] The roller cutting equipment provided in this embodiment includes a frame 1, a roller cutting assembly 2 and a pressure roller assembly 5. The roller cutting piece 3 in the roller cutting assembly 2 is installed on the frame 1 through two roller cutting mounting seats 4. The crimping bearing 7 in the pressure roller assembly 5 is crimped on the surface of the roller cutting piece 3, thereby improving the problem of inconsistent cutting degrees at both ends of the roller cutting piece 3 along its axial direction during cutting. The pressure roller assembly 5 includes a fixed shaft 6 and two crimping bearings 7. The fixed shaft 6 is located above the roller-cut piece 3. The crimping bearings 7 are rotatably installed on the fixed shaft 6 so that the crimping bearings 7 can be crimped to the surface of the roller-cut piece 3. Since the crimping bearings 7 directly act on the surface of the roller-cut piece 3 and the fixed shaft 6 does not rotate, they will not vibrate due to rotation, so that the crimping bearings 7 can apply a stable force to the surface of the roller-cut piece 3, and the forces applied by the two crimping bearings 7 are consistent. The two forces also act on the end positions of the roller-cut piece 3 respectively. The above-mentioned means cooperate with each other to make the roller-cut piece 3 uniformly stressed as a whole, and can also ensure uniform cutting of the material during the high-speed rotation of the roller-cut piece 3, making the cutting process more stable and reliable, and improving processing efficiency and safety.

[0058] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A roller cutting device, characterized in that: include: Rack (1); A roller cutting assembly (2), comprising a roller cutting member (3) and two roller cutting mounting seats (4); both ends of the roller cutting member (3) are respectively pivotally connected to one of the roller cutting mounting seats (4), and the roller cutting mounting seats (4) are mounted on the frame (1); A pressure roller assembly (5), comprising a fixed shaft (6) and two crimping bearings (7); both ends of the fixed shaft (6) are mounted on the frame (1) and are located above the roller-cut piece (3); the crimping bearings (7) are mounted on the fixed shaft (6) and are located at both ends of the fixed shaft (6); and the distance of the fixed shaft (6) relative to the roller-cut piece (3) and the diameter of the crimping bearings (7) are configured to be suitable for crimping the crimping bearings (7) to the surface of the roller-cut piece (3).

2. A roller cutting device as claimed in claim 1, characterized in that: The pressure roller assembly (5) further comprises a fixing block (8), and each of the pressure-contact bearings (7) is clamped and fixed by two fixing blocks (8) located on both sides of the pressure-contact bearing in the axial direction; the fixing block (8) is detachably fixed to the fixed shaft (6) by means of a fastener.

3. A roller cutting device as claimed in claim 2, characterized in that: The fixing block (8) comprises two semi-annular fixing rings (9), one of which is provided with a first threaded hole, and the other fixing ring (9) is locked to the first threaded hole via a first fastener (10) so that the two fixing rings (9) tightly embrace the fixing shaft (6).

4. A roller cutting device as claimed in claim 3, characterized in that: The fixing block (8) contacts the ball of the corresponding pressing bearing (7) to fix the position of the pressing bearing (7) relative to the fixed shaft (6) without restricting the rotation of the pressing bearing (7).

5. A roller cutting device as claimed in claim 3 or 4, characterized in that: The roller cutting piece (3) is provided with a crimping portion (11) near its two ends, and the positions of the two crimping bearings (7) in the pressure roller assembly (5) are suitable for adjustment according to the positions of the crimping portions (11) on the roller cutting piece (3), so that the crimping bearing (7) is crimped to a corresponding crimping portion (11).

6. A roller cutting device as claimed in claim 5, characterized in that: The crimping portion (11) is a metal strip surrounding the outer circumference of the roll-cut piece (3).

7. A roller cutting device as claimed in claim 6, characterized in that: The frame (1) comprises a machine platform (12) and two mounting frames (13), the two mounting frames (13) are relatively fixedly mounted on the machine platform (12), and the mounting frames (13) are provided with vertically extending mounting grooves (14), and the two ends of the two roller cutting mounting seats (4) and the fixed shaft (6) respectively extend into the mounting grooves (14) of the two mounting frames (13) and are limitedly matched with the mounting grooves (14).

8. A roller cutting device as claimed in claim 7, characterized in that: The invention also comprises two fixing assemblies (15), wherein the fixing assemblies (15) comprise a pressing block (16), a threaded seat (17) and a fixing bolt (18); the threaded seat (17) is detachably fixedly mounted on the top of the mounting frame (13) by means of a second fastener, and is provided with a second threaded hole vertically extending therethrough; the fixing bolt (18) is threadedly connected to the second threaded hole, and its lower end is rotatably connected to the pressing block (16) around a vertical axis; the pressing block (16) is suitable for adjusting its height position in the mounting groove (14) by means of the fixing bolt (18) so as to press the end of the fixing shaft (6) downward.

9. A roller cutting device as claimed in claim 8, characterized in that: The fixed shaft (6) comprises a shaft rod (19) and two shaft end blocks (20). The two shaft end blocks (20) are fixedly connected to two ends of the shaft rod (19) and are suitable for extending into the installation groove (14) to cooperate with the pressing block (16).

10. A roller cutting device as claimed in claim 9, characterized in that: The roller cutting assembly (2) also includes a driving device, which is dynamically connected to the roller cutting member (3) of the roller cutting assembly (2) to drive the roller cutting member (3) to rotate.

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