Rubber roller numerical control cutting equipment with fixed-length cutting function

Abstract

The invention relates to the technical field of rubber roller cutting, in particular to fixed-length cutting rubber roller numerical control cutting equipment which comprises a cutting moving seat, a cutting feeding assembly and a size positioning assembly, the cutting moving seat is horizontally and slidably arranged above a machine table, and a rubber roller is horizontally and fixedly arranged on the side, close to the cutting moving seat, above the machine table; the cutting feeding assembly is movably connected with one side of the cutting moving seat in an inserted mode, the cutting feeding assembly is arranged on one side of the cutting moving seat and used for horizontally moving and cutting a rubber layer on the rubber roller, and when precise fixed-length cutting is conducted on the two ends of the rubber roller, the size positioning assembly is matched with the position of the cutting knife, so that the cutting knife can cut the two ends of the rubber roller. When a rubber layer and an iron core are subjected to edging cutting or a rubber layer with a certain length is further cut on the surface of the iron core, the purpose of accurate fixed-length cutting is achieved, the cutting position of a cutter is conveniently adjusted, in addition, under the auxiliary action of a cutter grinding disc and an edge grinding wheel, additional cutting machining benefits can be achieved, and operation is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of rubber roller cutting, in particular to a rubber roller numerical control cutting device for fixed-length cutting. Background Art

[0002] Rubber rollers are roll-shaped products made of metal or other materials as the core and rubber covered by vulcanization. They are mainly used in papermaking, dyeing, printing, grain processing, metallurgy, plastic processing, etc. When processing rubber rollers, the rubber material needs to be coated on the outside of the roller core, and then the coated rubber material is cut according to the process requirements;

[0003] The invention of the existing publication number CN113246206 A discloses a rubber roller cutting machine, including a main frame and a feeding mechanism, a pushing mechanism, a cutting mechanism and an internal expansion mechanism installed on the main frame, which can realize high automation of the rubber roller cutting machine and improve the cutting efficiency and cutting accuracy of the rubber roller. Since the rubber roller has protruding rubber structures at both ends after being coated with rubber, when cutting the rubber roller, according to the requirements of the processing technology, it is necessary to cut the rubber structure extending out of the roller core, and it is necessary to cut a rubber step groove of a certain length between the rubber coating structure and the roller core to cope with different usage scenarios. However, when cutting the rubber structure above the iron core, it is necessary to ensure that the cutting lengths on both sides are the same. The existing cutting operation method is prone to cutting errors, has low efficiency, and is inconvenient to use. Summary of the invention

[0004] The object of the present invention is to provide a CNC cutting device for rubber rollers for cutting to a fixed length, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a CNC cutting device for rubber rollers for fixed-length cutting, comprising:

[0006] A cutting movable seat, which is horizontally slidably arranged above the machine platform, and a rubber roller is horizontally fixed on one side of the machine platform close to the cutting movable seat;

[0007] A cutting feed assembly, wherein the cutting feed assembly is movably connected to one side of the cutting movable seat, and the cutting feed assembly comprises a feeding movable seat, a control mounting seat and a cutting knife. The feeding movable seat is horizontally movably connected to the side of the cutting movable seat close to the rubber roller, the control mounting seat is movably arranged on one side of the feeding movable seat, and the cutting knife is horizontally arranged above the control mounting seat;

[0008] A size positioning component, wherein the size positioning component is movably arranged on one side of the cutting movable seat close to the feeding movable seat, the size positioning component includes a switching turntable, a rotating support arm and an angle contact rod, a reversing adsorption plate is movably connected to one side of the switching turntable, the rotating support arm is horizontally arranged on one side of the reversing adsorption plate, the angle contact rod is adjustably arranged on one side of the rotating support arm, and one side of the angle contact rod is in contact with the rubber roller.

[0009] Preferably, the cutting movable seat is provided with an extending mounting platform on the side close to the rubber roller, and a movable mounting groove is horizontally penetrated through the center of the extending mounting platform. One side of the feed movable seat is horizontally movably inserted into the movable mounting groove, and two guide grooves are symmetrically provided on both sides of the movable mounting groove. Feed screws are horizontally arranged in the two guide grooves, and connecting screw sleeves are respectively provided on both sides of the feed movable seat close to the guide groove. The two connecting screw sleeves are respectively inserted into the two guide grooves and sleeved on the feed screw.

[0010] Preferably, the movable installation groove is provided with clearance grooves at the upper and lower ends close to the rubber roller, a pin connection groove is provided on one side of the movable feed seat located in the clearance groove, and the control installation seat is movably arranged in the pin connection groove.

[0011] Preferably, two supporting pins are symmetrically provided on both sides of the control mounting seat, and the two supporting pins are respectively connected to the two sides of the feed movable seat through bearing rotation. A rotating disk is horizontally provided on the upper end of the control mounting seat, and the cutting knife is horizontally fixed on the rotating disk by bolts. The rubber roller includes an iron core and a rubber layer, the rubber layer covers the outer surface of the iron core, and one side of the cutting knife is in contact with the rubber layer.

[0012] Preferably, a connecting groove is provided on one side of the lower end of the pin connecting groove, a connecting ear is provided opposite to one side of the connecting groove and the control mounting seat, and a telescopic push cylinder is provided between the two connecting ears via an assembly pin.

[0013] Preferably, the switching turntable is arranged on an extended mounting platform of the cutting movable seat through a bearing rotation sleeve, a reference pin is horizontally provided at the center of one side of the switching turntable, a reference pin is movably sleeved on one side of the reversing adsorption plate, an electromagnetic fixing plate is vertically provided on the side of the switching turntable close to the reference pin, and one side of the reversing adsorption plate is in contact with the electromagnetic fixing plate.

[0014] Preferably, a load-bearing arm is horizontally provided on the side of the reversing adsorption plate away from the reference pin, a reinforcing rib is provided between the load-bearing arm and the reversing adsorption plate, a combined rotating shaft is horizontally provided on one side of the rotating arm, and the load-bearing arm is rotatably plugged into one side of the combined rotating shaft.

[0015] Preferably, a spring box is horizontally provided at the upper end of the load-bearing support arm, and positioning blocks are symmetrically provided on both sides of the rotating support arm close to the load-bearing support arm. A spring groove is opened in the spring box, and a positioning rod is horizontally movably inserted in the spring groove. A positioning spring is provided on one side of the positioning rod placed in the spring groove through a pressure block. The positioning blocks are horizontally penetrated with positioning holes, and the positioning rod passes through one side of the spring box and is movably inserted into the positioning hole of one of the positioning blocks.

[0016] Preferably, a socket positioning box is horizontally provided on one side of the rotating support arm, and a fixed-length adjustment plate is horizontally provided on one side of the angle contact rod. The fixed-length adjustment plate movably penetrates the socket positioning box, and a butterfly fixing bolt is provided on the upper end of the socket positioning box through threaded insertion. One side of the butterfly fixing bolt abuts against one side of the fixed-length adjustment plate in the socket positioning box, and a scale line is provided on one side of the scale line. A ball box is provided on the side of the angle contact rod away from the fixed-length adjustment plate, and a contact ball is movably embedded on one side of the ball box, and one side of the contact ball is in contact with the end face of the iron core.

[0017] Preferably, an edge grinding wheel is vertically provided at the lower part of the control mounting seat near the rubber roller, and the edge grinding wheel is located directly below the cutting knife. A drive box is horizontally provided at the upper end of the give way groove of the feed movable seat, and a mounting turntable is tiltedly provided on the side of the drive box near the cutting knife through a drive shaft, and a knife grinding disk is plugged into one side of the mounting turntable. The lower end of one side of the cutting edge of the cutting knife is inclined, and when the cutting edge of the cutting knife faces the cutting movable seat, the knife grinding disk contacts the inclined surface of the cutting edge of the cutting knife.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] A cutting feed assembly is arranged on one side of the cutting movable seat, which is used for horizontally moving the rubber layer on the cutting rubber roller. When the two ends of the rubber roller are precisely cut to a fixed length, the rubber layer can be cut flush with the iron core or a certain length of the rubber layer can be further cut on the surface of the iron core through the coordination of the size positioning assembly and the position of the cutting knife, so as to achieve the purpose of precise fixed-length cutting, and it is convenient to adjust the cutting position of the cutting knife. In addition, with the assistance of the knife grinding disc and the edge grinding wheel, additional cutting processing benefits can be achieved, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of part A;

[0022] Figure 3 This is a schematic diagram of the cutting movable seat and the rubber roller position structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of part B;

[0024] Figure 5 It is a schematic side view of the local structure of the cutting moving seat of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the C part;

[0026] Figure 7 For the present invention Figure 5 Schematic diagram of the D part;

[0027] Figure 8 This is a schematic diagram of the installation structure of the switching turntable of the present invention;

[0028] Fig. 9 For the present invention Figure 8 Schematic diagram of part E;

[0029] Fig.10 It is a schematic diagram of the installation structure of the feed movable seat and the control mounting seat of the present invention;

[0030] Fig.11 This is a schematic diagram of the installation structure of the reversing adsorption plate of the present invention;

[0031] Fig.12 For the present invention Fig.11 Schematic diagram of the F part;

[0032] Fig.13 This is a schematic diagram of the cooperation between the cutting knife and the knife grinding disc of the present invention;

[0033] Fig.14 For the present invention Fig.13 Schematic diagram of the G part;.

[0034] In the figure: cutting movable seat 1, rubber roller 2, iron core 3, rubber layer 4, movable mounting groove 5, feed movable seat 6, guide groove 7, feed screw rod 8, pin connection groove 9, control mounting seat 10, rotating disk 12, cutting knife 13, connecting groove 14, telescopic push cylinder 15, switching turntable 16, reference pin 17, reversing adsorption plate 18, load-bearing support arm 19, rotating support arm 20, sleeve positioning box 21, fixed length adjustment plate 22, butterfly fixing bolt 23, scale line 24, angle contact rod 25, ball box 26, contact ball 27, electromagnetic fixing plate 28, combined rotating shaft 29, spring box 30, spring groove 31, positioning plug rod 32, positioning spring 33, positioning block 34, positioning socket 35, mounting turntable 36, knife grinding disc 37, edge grinding wheel 38. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Please see attached Figure 1-Figure 14 , this application provides the following technical solutions.

[0037] Embodiment 1: A fixed-length cutting rubber roller CNC cutting equipment, comprising: a cutting movable seat 1 and a cutting feed assembly, the cutting movable seat 1 is horizontally slidably arranged above the machine table, a rubber roller 2 is horizontally fixedly arranged on the side of the machine table close to the cutting movable seat 1, the cutting feed assembly is movably plugged into one side of the cutting movable seat 1, the cutting feed assembly comprises a feeding movable seat 6, a control mounting seat 10 and a cutting knife 13, the feeding movable seat 6 is horizontally movably plugged into the side of the cutting movable seat 1 close to the rubber roller 2, the control mounting seat 10 is movably arranged on one side of the feeding movable seat 6, the cutting knife 13 is horizontally arranged above the control mounting seat 10, and a protruding mounting seat is provided on the side of the cutting movable seat 1 close to the rubber roller 2. A mounting platform is provided with a movable mounting groove 5 extending out from the center of the mounting platform and horizontally penetrating therethrough. One side of a feed movable seat 6 is horizontally movably inserted into the movable mounting groove 5. Two guide grooves 7 are symmetrically provided on both sides of the movable mounting groove 5. Feed screw rods 8 are horizontally arranged in the two guide grooves 7. Connecting screw sleeves are respectively arranged on both sides of the feed movable seat 6 close to the guide groove 7. The two connecting screw sleeves are respectively inserted into the two guide grooves 7 and sleeved with the feed screw rod 8. The feed movable seat 6 can slide horizontally in the extending mounting platform and the movable mounting groove 5 set on the cutting movable seat 1 to adapt to the cutting operation of rubber rollers 2 with different diameters. The feed screw rod 8 is driven by a servo motor automatically controlled by PLC for precise movement control.

[0038] The movable mounting groove 5 is provided with a clearance groove at the upper and lower ends near the rubber roller 2, and the feed movable seat 6 is provided with a pin connection groove 9 on one side of the clearance groove, and the control mounting seat 10 is movably arranged in the pin connection groove 9, and two support pins are symmetrically arranged on both sides of the control mounting seat 10, and the two support pins are respectively inserted into the two sides of the feed movable seat 6 through bearings. A rotating disk 12 is horizontally arranged on the upper end of the control mounting seat 10, and a cutting knife 13 is horizontally fixed on the rotating disk 12 by bolts. The rubber roller 2 includes an iron core 3 and a rubber layer 4, and the rubber layer 4 covers the iron core 3. The outer surface of the cutting knife 13 is in contact with the rubber layer 4. The rotating disk 12 is driven and controlled by a small servo motor to realize the rotation of the rotating disk 12 and the cutting knife 13. When multiple cutting knives 13 are installed above the rotating disk 12, different cutting knives 13 can be switched by rotating the rotating disk 12. A gear lever is horizontally provided in the pin-connecting groove 9 near the lower end of the control mounting seat 10. In normal use, the side surface of the lower end of the control mounting seat 10 contacts the gear lever and is in a vertical posture, and the rotating disk 12 and the cutting knife 13 are in a horizontal posture.

[0039] A size positioning component is set to position the moving position of the cutting knife 13, and the length to be cut is fixed. The size positioning component is movably arranged on the side of the cutting movable seat 1 close to the feeding movable seat 6. The size positioning component includes a switching turntable 16, a rotating support arm 20 and an angle contact rod 25. A reversing adsorption plate 18 is movably connected to one side of the switching turntable 16. The rotating support arm 20 is horizontally arranged on one side of the reversing adsorption plate 18. The angle contact rod 25 is adjustably arranged on one side of the rotating support arm 20, and one side of the angle contact rod 25 contacts the rubber roller 2. The switching turntable 16 is rotatably sleeved on the extended mounting platform of the cutting movable seat 1 through a bearing. The center of one side of the switching turntable 16 is horizontally provided with A reference pin 17 and a reversing adsorption plate 18 are movably sleeved on one side of the reference pin 17. An electromagnetic fixing plate 28 is vertically provided on the side of the switching turntable 16 close to the reference pin 17, and one side of the reversing adsorption plate 18 is in contact with the electromagnetic fixing plate 28. The rotation of the switching turntable 16 is controlled by a motor and a gear. The motor can be a servo stepper motor. In the normal processing state, the electromagnetic fixing plate 28 is energized to adsorb and fix the reversing adsorption plate 18 to maintain the stability of the reversing adsorption plate 18. When the direction of the reversing adsorption plate 18 needs to be changed, the electromagnetic fixing plate 28 is powered off, and the reversing adsorption plate 18 rotates to another direction and contacts the electromagnetic fixing plate 28 for magnetic fixation.

[0040] A load-bearing support arm 19 is horizontally provided on one side of the reversing adsorption plate 18 away from the reference pin 17, and a reinforcing rib is provided between the load-bearing support arm 19 and the reversing adsorption plate 18. A combined rotating shaft 29 is horizontally provided on one side of the rotating support arm 20, and one side of the combined rotating shaft 29 is rotatably plugged into the load-bearing support arm 19. A spring box 30 is horizontally provided on the upper end of the load-bearing support arm 19, and positioning blocks 34 are symmetrically provided on both sides of the rotating support arm 20 close to the load-bearing support arm 19. A spring groove 31 is opened in the spring box 30, and a positioning rod 32 is horizontally movably inserted in the spring groove 31. A positioning spring 33 is sleeved on one side of the positioning rod 32 placed in the spring groove 31, and a positioning hole 35 is horizontally penetrated through the positioning block 34, and the positioning rod 32 passes through one side of the spring box 30 and is movably inserted into the positioning hole 35 of one of the positioning blocks 34. The relative plug-in fixation of the positioning rod 32 and the positioning block 34 can limit the rotation position between the rotating support arm 20 and the load-bearing support arm 19.

[0041] A socket positioning box 21 is horizontally provided on one side of the rotating support arm 20, a fixed length adjustment plate 22 is horizontally provided on one side of the angular contact rod 25, the fixed length adjustment plate 22 is movably inserted into the socket positioning box 21, a butterfly fixing bolt 23 is provided on the upper end of the socket positioning box 21 through threaded insertion, one side of the butterfly fixing bolt 23 is in contact with one side of the fixed length adjustment plate 22 inserted into the socket positioning box 21, a scale line 24 is provided on one side of the scale line 24, a ball box 26 is provided on the side of the angular contact rod 25 away from the fixed length adjustment plate 22, a contact ball 27 is movably embedded on one side of the ball box 26, and the contact ball 27 One side is in contact with the end face of the iron core 3. Because the positions of the reference pin 17 and the reversing adsorption plate 18 are relatively fixed, when the corner contact rod 25 is adjusted by the fixed-length adjustment plate 22 and the scale line 24, the end of the contact ball 27 is flush with the side of the cutting knife 13. The contact ball 27 contacts the side of the iron core 3, and the cutting knife 13 can accurately cut the position where the glue layer 4 extends out of the iron core 3. When there is a certain length between the contact ball 27 and the side of the cutting knife 13, the cutting knife 13 can cut a certain distance of the glue layer 4 on the surface of the iron core 3 to meet the final process requirements of the rubber roller 2.

[0042] In this embodiment: when it is necessary to cut the rubber layer 4 at the end of the iron core 3, the position relationship between the contact ball 27 and the side of the cutting knife 13 is adjusted according to the cutting length, and then the machine controls the rubber roller 2 to rotate, and the feed screw 8 controls the feed movable seat 6 and the horizontally placed cutting knife 13 to move toward the rubber roller 2. At this time, the cutting knife 13 can cut the rubber layer 4 to a fixed length. After the cutting of one end of the iron core 3 is completed, the motor drives the switching turntable 16 to rotate 180°, so that the reversing adsorption plate 18 and the corner contact rod 25 rotate to the other end of the iron core 3, the reversing adsorption plate 18 is turned in the rotation direction, and the electromagnetic fixing plate 28 is adsorbed and fixed, so that the corner contact rod 25 is on the rubber roller 2. The virtual axis is at the horizontal height, and then the positioning rod 32 is pulled out of the positioning hole 35 of one of the positioning blocks 34, and the rotating arm 20 is rotated to insert the positioning rod 32 into the positioning hole 35 of the other positioning block 34, so that the contact ball 27 points to the end of the iron core 3, and the position distance between the contact ball 27 and the cutting knife 13 is adjusted to achieve the cutting of the rubber layer 4 at the other end of the rubber roller 2, so as to achieve fast and accurate cutting. During cutting, the contact ball 27 can be contacted with the iron core 3 before reaching the appropriate cutting position, and then the feed movable seat 6 controls the cutting knife 13 to feed and cut, and the end position of the target length is cut first, and then the remaining position is cut off.

[0043] Embodiment 2: On the basis of embodiment 1, a connecting groove 14 is provided on one side of the lower end of the pin connecting groove 9, and a connecting ear is provided opposite to one side of the connecting groove 14 and the control mounting seat 10, and a telescopic push cylinder 15 is provided between the two connecting ears through an assembly pin. A side grinding wheel 38 is vertically provided below the side of the control mounting seat 10 close to the rubber roller 2, and the side grinding wheel 38 is located directly below the cutting knife 13. After the cutting knife 13 cuts the rubber layer 4, the control mounting seat 10 can be pushed and rotated by the telescopic push cylinder 15 to rotate the side grinding wheel 38 close to the rubber layer 4. The thickness of the side grinding wheel 38 is the same as that of the rotating disk 12, and the edge of the rubber layer 4 after cutting is polished by the side of the side grinding wheel 38. In addition, the width of the outer edge of the side grinding wheel 38 from the mounting seat is greater than the thickness of the rubber layer 4.

[0044] In addition to supporting the control mounting seat 10 by tilting and controlling the edge grinding wheel 38 to be in contact with the rubber layer 4, the telescopic push cylinder 15 can also pull the control mounting seat 10 back to abut against the lever at the lower end of the pin connection groove 9 to maintain the support stability of the control mounting seat 10.

[0045] A drive box is horizontally provided at the upper end of the yield groove of the feed movable seat 6. A mounting turntable 36 is tilted on one side of the drive box close to the cutting knife 13 through a drive shaft. A knife grinding disk 37 is inserted on one side of the mounting turntable 36. The lower end of the cutting edge of the cutting knife 13 is tilted. When the cutting edge of the cutting knife 13 faces the cutting movable seat 1, the knife grinding disk 37 contacts the inclined surface of the cutting edge of the cutting knife 13. Before the cutting knife 13 rotates, the feed movable seat 6 can extend a certain distance from the movable mounting slot 5. When the cutting edge of the cutting knife 13 faces the knife grinding disk 37, the feed movable seat 6 horizontally controls the cutting knife 13 to contact with the contact ball 27, thereby achieving contact grinding with appropriate force and improving the convenience of using the cutting knife 13.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC cutting device for rubber rollers for cutting to length, characterized in that: include: A cutting movable seat (1), the cutting movable seat (1) being horizontally slidably arranged above the machine platform, and a rubber roller (2) being horizontally fixedly arranged on one side of the machine platform close to the cutting movable seat (1); A cutting feed assembly, wherein the cutting feed assembly is movably plugged into one side of a cutting movable seat (1), and the cutting feed assembly comprises a feeding movable seat (6), a control mounting seat (10) and a cutting knife (13); the feeding movable seat (6) is horizontally movably plugged into one side of the cutting movable seat (1) close to the rubber roller (2); the control mounting seat (10) is movably arranged on one side of the feeding movable seat (6); and the cutting knife (13) is horizontally arranged above the control mounting seat (10); A size positioning component is movably arranged on a side of a cutting movable seat (1) close to a feeding movable seat (6), and comprises a switching turntable (16), a rotating support arm (20) and an angle contact rod (25); a reversing adsorption plate (18) is movably connected to one side of the switching turntable (16); the rotating support arm (20) is horizontally arranged on one side of the reversing adsorption plate (18); the angle contact rod (25) is adjustably arranged on one side of the rotating support arm (20), and one side of the angle contact rod (25) is in contact with a rubber roller (2).

2. The CNC cutting device for rubber rollers for cutting to length according to claim 1 is characterized in that: The cutting movable seat (1) is provided with a protruding mounting platform on the side close to the rubber roller (2), and a movable mounting groove (5) is horizontally penetrated through the center of the protruding mounting platform. One side of the feed movable seat (6) is horizontally movably inserted into the movable mounting groove (5), and two guide grooves (7) are symmetrically provided on both sides of the movable mounting groove (5). Feed screw rods (8) are horizontally arranged in the two guide grooves (7). Connecting screw sleeves are respectively provided on both sides of the feed movable seat (6) close to the guide grooves (7), and the two connecting screw sleeves are respectively inserted into the two guide grooves (7) and sleeved with the feed screw rod (8).

3. The CNC cutting device for rubber rollers for cutting to length according to claim 2, characterized in that: The movable installation groove (5) is provided with clearance grooves at the upper and lower ends close to the rubber roller (2), and the feeding movable seat (6) is provided with a pin connection groove (9) on one side of the clearance groove, and the control installation seat (10) is movably arranged in the pin connection groove (9).

4. The CNC cutting device for rubber rollers for cutting to length according to claim 3 is characterized in that: Two support pins are symmetrically arranged on both sides of the control mounting seat (10), and the two support pins are respectively rotatably plugged into the two sides of the feed movable seat (6) through bearings. A rotating disk (12) is horizontally arranged on the upper end of the control mounting seat (10), and the cutting knife (13) is horizontally fixed on the rotating disk (12) by bolts. The rubber roller (2) includes an iron core (3) and a rubber layer (4), and the rubber layer (4) covers the outer surface of the iron core (3), and one side of the cutting knife (13) is in contact with the rubber layer (4).

5. The CNC cutting device for rubber rollers for cutting to length according to claim 4, characterized in that: A connecting groove (14) is provided on one side of the lower end of the pin connecting groove (9), a connecting ear is provided opposite to one side of the connecting groove (14) and the control mounting seat (10), and a telescopic push cylinder (15) is provided between the two connecting ears via an assembly pin.

6. The CNC cutting device for rubber rollers for cutting to length according to claim 5, characterized in that: The switching turntable (16) is arranged on a protruding mounting platform of the cutting movable seat (1) by rotating the bearing, a reference pin (17) is horizontally arranged at the center of one side of the switching turntable (16), one side of the reversing adsorption plate (18) is movably arranged to be sleeved with the reference pin (17), an electromagnetic fixing plate (28) is vertically arranged on one side of the switching turntable (16) close to the reference pin (17), and one side of the reversing adsorption plate (18) is in contact with the electromagnetic fixing plate (28).

7. The CNC cutting device for rubber rollers for cutting to length according to claim 6, characterized in that: A load-bearing support arm (19) is horizontally provided on the side of the reversing adsorption plate (18) away from the reference pin (17), a reinforcing rib is provided between the load-bearing support arm (19) and the reversing adsorption plate (18), a combined rotating shaft (29) is horizontally provided on one side of the rotating support arm (20), and one side of the combined rotating shaft (29) is rotatably plugged into the load-bearing support arm (19).

8. The CNC cutting device for rubber rollers for cutting to length according to claim 7, characterized in that: A spring box (30) is horizontally arranged at the upper end of the load-bearing support arm (19), and positioning blocks (34) are symmetrically arranged on both sides of the rotating support arm (20) close to the load-bearing support arm (19). A spring slot (31) is provided in the spring box (30), and a positioning rod (32) is horizontally movably inserted in the spring slot (31). A positioning spring (33) is sleeved on one side of the positioning rod (32) placed in the spring slot (31) through a pressure block, and positioning holes (35) are horizontally inserted in the positioning blocks (34), and the positioning rod (32) passes through one side of the spring box (30) and is movably inserted into the positioning hole (35) of one of the positioning blocks (34).

9. The CNC cutting device for rubber rollers for cutting to length according to claim 8, characterized in that: A sleeve positioning box (21) is horizontally arranged on one side of the rotating support arm (20), a fixed length adjustment plate (22) is horizontally arranged on one side of the angular contact rod (25), the fixed length adjustment plate (22) movably penetrates the inserted sleeve positioning box (21), a butterfly fixing bolt (23) is arranged on the upper end of the sleeve positioning box (21) through threaded insertion, one side of the butterfly fixing bolt (23) abuts against one side of the fixed length adjustment plate (22) inserted into the sleeve positioning box (21), a scale line (24) is arranged on one side of the scale line (24), a ball box (26) is arranged on the side of the angular contact rod (25) away from the fixed length adjustment plate (22), a contact ball (27) is movably embedded on one side of the ball box (26), and one side of the contact ball (27) contacts the end surface of the iron core (3).

10. The CNC cutting device for rubber rollers for cutting to length according to claim 9, characterized in that: An edge grinding wheel (38) is vertically arranged below the side of the control mounting seat (10) close to the rubber roller (2), and the edge grinding wheel (38) is located directly below the cutting knife (13). A drive box is horizontally arranged at the upper end of the clearance groove of the feed movable seat (6), and a mounting turntable (36) is tiltedly arranged on the side of the drive box close to the cutting knife (13) through a driving shaft, and a knife grinding disc (37) is inserted on one side of the mounting turntable (36). The lower end of one side of the cutting edge of the cutting knife (13) is tilted, and when the cutting edge of the cutting knife (13) faces the cutting movable seat (1), the knife grinding disc (37) contacts the inclined surface of the cutting edge of the cutting knife (13).

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