Printing machine roller convenient to replace

Abstract

The utility model relates to a printing machine roller convenient to replace. The printing machine roller effectively solves the problems that operation is time-consuming and has limitation. According to the technical scheme, the device comprises a base, the left side and the right side of the base are each provided with a vertical plate, a roller rotating around the axis is arranged between the two vertical plates, and the axis of the roller is arranged left and right; the left end and the right end of the roller are each fixedly provided with a coaxial round rod, the outer end of each round rod is provided with a coaxial cylindrical block which can only move in the axial direction, the cylindrical blocks can be fixed after moving outwards in the axial direction, and the cylindrical blocks are subjected to outward moving force; the inner sides of the left and right vertical plates are each provided with a rotating shaft rotating around the axis, the rotating shafts are arranged left and right, and the outer edges of the rotating shafts are sleeved with sleeves which can move in the axial direction. Installation and separation of the rotating shaft and the roller can be easily achieved only by pressing the step block, the pushing sleeve and the pushing cylindrical block, matching of bolts and nuts is not used in the whole process, and the operation time for rotating the nuts is saved.

Description

Technical Field

[0001] The utility model relates to the field of printing presses, in particular to a printing press roller which is easy to replace. Background Art

[0002] The existing method of replacing the roller is such as the scheme with the authorization publication number CN220053175U. When in use, the first gear ring 21 and the second gear ring 24 are first engaged with each other, and then the four sets of transmission slide bars 27 are inserted one by one, and finally the fastening nut 29 is movably connected with the threaded part of the outer surface of the transmission slide bar 27 to complete the final fixation. Although the fixed installation can be completed, there are the following problems;

[0003] When installing and fixing with nuts and threads, it is necessary to rotate the bolts for installation or removal. Rotating the threads is time-consuming, and in order to ensure the stability of the installation and fixing, the nuts usually need to be tightened. When disassembling, auxiliary tools are needed to operate, which further increases the limitations of use. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a printing press roller that is easy to replace, which effectively solves the problems of time-consuming operation and limitations.

[0005] The technical solution is a printing press roller that is easy to replace, comprising a base, a vertical plate is installed on the left and right sides of the base, a roller is rotated around an axis between the two vertical plates, and the axis of the roller is arranged on the left and right sides;

[0006] A coaxial round rod is fixed at each of the left and right ends of the roller. A coaxial cylindrical block that can only move in the axial direction is installed at the outer end of each round rod. The cylindrical block can be fixed after moving axially outward, and the cylindrical block is subjected to the force of moving outward.

[0007] A rotating shaft rotating around an axis is installed on the inner side of the left and right vertical plates respectively. The rotating shafts are arranged on the left and right sides. A sleeve is sleeved on the outer edge of the rotating shaft. The sleeve can move along the axial direction and can be fixed after the sleeve is away from the corresponding side vertical plate.

[0008] When the two round rods are coaxial with the rotating shaft, the cylindrical block can be moved outward to be fixed to the rotating shaft. When the cylindrical block is fixed to the rotating shaft, the sleeve can be moved toward the cylindrical block to fix the cylindrical block, and the sleeve can be fixed at the same time; when the sleeve is released, the sleeve can be separated from the cylindrical block, and the cylindrical block can be separated from the rotating shaft.

[0009] A rectangular countersunk hole is formed on the outer end surface of the round rod, and a rectangular block is fixed to one end of the cylindrical block close to the corresponding side round rod, and the rectangular block is placed in the rectangular countersunk hole and moves in and out;

[0010] A spring is fixed at the bottom of each rectangular countersunk hole, and the other end of the spring is fixed on the rectangular block. The spring causes the cylindrical block to be subjected to a force moving outwards through the rectangular block.

[0011] The outer edge of the round rod is provided with a plurality of clearance grooves penetrating to the rectangular countersunk hole. The clearance grooves are evenly distributed about the circumference of the round rod and arranged left and right in the length direction. An L-shaped rod is installed in each clearance groove. The corner of each L-shaped rod is hinged in the clearance groove, and the hinge is located on the side away from the roller. Both ends of the L-shaped rod can swing toward one side of the roller around the hinge, and both ends can be placed in the clearance groove after swinging toward the roller.

[0012] The outer edge of one end of the rotating shaft close to the roller is provided with a plurality of blind holes, which are evenly distributed about the circumference of the rotating shaft, and each blind hole is provided with a stopper that can move inward and outward, and a compression spring is fixed at the bottom of the blind hole, and the other end of the compression spring is fixed on the stopper, and the compression spring gives the stopper a force to move outward;

[0013] The outer edge of one end of the sleeve away from the roller is provided with a plurality of stepped holes penetrating into the sleeve, the outer diameter of the stepped holes is smaller than the inner diameter, a stepped block which can move inwards and outwards is installed in the stepped hole, the inner diameter of the stepped block is larger than the outer diameter of the stepped hole, the inner diameter of the stepped hole is larger than the outer diameter of the block, and the block can be placed on the inner side of one of the stepped holes after moving outwards, and the outer end of the stepped block is placed on the outer side of the sleeve after moving outwards.

[0014] The outer edge of the outer end face of the cylindrical block is provided with a serrated protrusion, and the outer edge of one end of the rotating shaft close to the cylindrical block is also fixed with a serrated protrusion. The serrated protrusion on the cylindrical block can be engaged with the serrated protrusion on the rotating shaft, and the rotating shaft can drive the cylindrical block to rotate through the serrated protrusion.

[0015] A coaxial circular hole is opened at the outer end of the cylindrical block, and a cylindrical protrusion is fixed to the end of the rotating shaft close to the cylindrical block. The length of the cylindrical protrusion is greater than the height of the sawtooth protrusion, and the cylindrical protrusion can be placed in the circular hole on the cylindrical block on the corresponding side;

[0016] One end of the cylindrical projection away from the corresponding side rotation axis is chamfered.

[0017] A motor is fixed on the outer side of one of the vertical plates, and a rotating shaft on the corresponding side where the motor is located passes through the vertical plate on the corresponding side and is connected to the motor via a coupling, and the motor drives the rotating shaft to rotate.

[0018] The utility model can easily realize the installation and separation of the rotating shaft and the roller only by pressing the step block, pushing the sleeve and pushing the cylindrical block, and the cooperation of bolts and nuts is not used in the whole process, which saves the operation time of rotating the nut, is easy to use and firmly fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is the front view of the utility model.

[0020] Figure 2 It is a partial cross-sectional view of the utility model.

[0021] Figure 3 It is an enlarged view of a retained partial sectional view of the present invention.

[0022] Figure 4 This is a front cross-sectional view of the utility model in which the sleeve and the rotating shaft are retained and the sleeve is away from the roller.

[0023] Figure 5 This is a front cross-sectional view of the utility model in which the cylindrical block and the round rod are retained and the cylindrical block moves toward the round rod.

[0024] Figure 6 This is a front cross-sectional view of the utility model in which the cylindrical block and the round rod are retained and the cylindrical block is away from the round rod.

[0025] Figure 7 It is a three-dimensional diagram of the cylindrical block of the utility model. DETAILED DESCRIPTION

[0026] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Depend on Figures 1 to 7 The utility model comprises a base 1, a vertical plate 2 is installed on the left and right sides of the base 1, a roller 3 is rotated around the axis between the two vertical plates 2, and the axis of the roller 3 is arranged left and right;

[0028] A coaxial round rod 4 is fixed to each of the left and right ends of the roller 3. A coaxial cylindrical block 5 which can only move in the axial direction is installed at the outer end of each round rod 4. The cylindrical block 5 can be fixed after moving axially outward, and the cylindrical block 5 is subjected to the force of moving outward.

[0029] A rotating shaft 6 is installed on the inner side of the left and right vertical plates 2, and the rotating shaft 6 is arranged on the left and right sides. A sleeve 7 is sleeved on the outer edge of the rotating shaft 6. The sleeve 7 can move along the axial direction, and the sleeve 7 can be fixed after it is away from the corresponding side vertical plate 2.

[0030] When the two round rods 4 are coaxial with the rotating shaft 6, the cylindrical block 5 can be moved outward to be fixed to the rotating shaft 6. When the cylindrical block 5 is fixed to the rotating shaft 6, the sleeve 7 can be moved toward the cylindrical block 5 to fix the cylindrical block 5, and the sleeve 7 can be fixed at the same time; when the sleeve 7 is released, the sleeve 7 can be detached from the cylindrical block 5, and the cylindrical block 5 can be detached from the rotating shaft 6.

[0031] The outer end surface of the round rod 4 is provided with a rectangular countersunk hole 8, and a rectangular block 9 is fixed to one end of the cylindrical block 5 close to the corresponding side round rod 4, and the rectangular block 9 is placed in the rectangular countersunk hole 8 and moves in and out;

[0032] A spring is fixed at the bottom of each rectangular countersunk hole 8, and the other end of the spring is fixed on the rectangular block 9. The spring causes the cylindrical block 5 to be subjected to an outward moving force through the rectangular block 9.

[0033] The outer edge of the round rod 4 is provided with a plurality of clearance grooves 10 penetrating to the rectangular countersunk hole 8. The clearance grooves 10 are evenly distributed about the circumference of the round rod 4 and arranged left and right in the length direction. An L-shaped rod 11 is installed in each clearance groove 10. The corner of each L-shaped rod 11 is hinged in the clearance groove 10, and the hinge is located on the side away from the roller 3. Both ends of the L-shaped rod 11 can swing toward one side of the roller 3 around the hinge, and both ends can be placed in the clearance groove 10 after swinging toward the roller;

[0034] When one end of the L-shaped rod 11 points to the axis of the round rod 4, the other end of the L-shaped rod 11 points to the roller 3, the outer side of the end pointing to the roller 3 is flush with the outer edge of the round rod 4, and the end of the end pointing to the round rod 4 is located in the rectangular countersunk hole 8, and the L-shaped rod 11 located in the rectangular hole can contact the inner end of the rectangular block 9, and the L-shaped rod 11 prevents the cylindrical block 5 from moving to one side in the rectangular countersunk hole 8 through the rectangular block 9;

[0035] When one end of the L-shaped rod 11 points to the outside of the round rod 4 , the other end of the L-shaped rod 11 points to the roller 3 , and the end pointing to the outside of the round rod 4 is located outside the round rod 4 .

[0036] The outer edge of one end of the rotating shaft 6 close to the roller 3 is provided with a plurality of blind holes 12, and the plurality of blind holes 12 are evenly distributed about the circumference of the rotating shaft 6, and each blind hole 12 is provided with a stopper 13 that can move inward and outward, and a compression spring is fixed at the bottom of the blind hole 12, and the other end of the compression spring is fixed on the stopper 13, and the compression spring gives the stopper 13 a force to move outward;

[0037] The outer edge of one end of the sleeve 7 away from the roller 3 is provided with a plurality of stepped holes 14 penetrating into the sleeve 7, the outer diameter of the stepped hole 14 is smaller than the inner diameter, a stepped block 15 capable of moving inward and outward is installed in the stepped hole 14, the inner diameter of the stepped block 15 is larger than the outer diameter of the stepped hole 14, the inner diameter of the stepped hole 14 is larger than the outer diameter of the stopper 13, the stopper 13 can be placed inside one of the stepped holes 14 after moving outward, and the outer end of the stepped block 15 is placed outside the sleeve 7 after moving outward;

[0038] When the sleeve 7 moves toward the side of the roller 3, the stopper 13 moves outward under the action of the compression spring, and the outer end of the stopper 13 moves into the stepped hole 14. The inner end of the stopper 13 is not separated from the rotating shaft 6. The stopper 13 stops the sleeve 7 from moving left and right. When the sleeve 7 is fixed, the right end of the sleeve 7 is located outside the clearance groove 10, which can prevent the L-shaped rod 11 from swinging outward.

[0039] The outer edge of the outer end surface of the cylindrical block 5 is provided with a serrated protrusion 16, and the outer edge of one end of the rotating shaft 6 close to the cylindrical block 5 is also fixed with a serrated protrusion 16. The serrated protrusion 16 on the cylindrical block 5 can be engaged with the serrated protrusion 16 on the rotating shaft 6, and the rotating shaft 6 can drive the cylindrical block 5 to rotate through the serrated protrusion 16;

[0040] A coaxial circular hole 17 is formed at the outer end of the cylindrical block 5, and a cylindrical protrusion 18 is fixed to one end of the rotating shaft 6 close to the cylindrical block 5. The length of the cylindrical protrusion 18 is greater than the height of the sawtooth protrusion 16, and the cylindrical protrusion 18 can be placed in the circular hole 17 on the corresponding side cylindrical block 5;

[0041] One end of the cylindrical projection 18 away from the corresponding side rotation shaft 6 is chamfered.

[0042] A motor 19 is fixed to the outer side of one of the vertical plates 2, and the corresponding side rotating shaft 6 where the motor 19 is located passes through the vertical plate 2 on the corresponding side and is connected to the motor 19 via a coupling, and the motor 19 drives the rotating shaft 6 to rotate.

[0043] When installing the utility model, first push the step block 15 inward, the step block 15 moves the stopper 13 into the blind hole 12, and then push the sleeves 7 on both sides to move toward the corresponding side stand 2 until the end of the cylindrical protrusion is located outside the sleeve 7;

[0044] Then push the cylindrical blocks 5 on both sides of the roller 3 to move to the side close to the roller 3, and the cylindrical blocks 5 make the L-shaped rod 11 placed at one end of the rectangular countersunk hole 8 swing into the clearance groove 10 through the rectangular block 9;

[0045] Then, the roller 3 is moved between the two rotating shafts 6, and then the cylindrical block 5 is released. The cylindrical block 5 moves outward under the action of the spring, and the round hole 17 on the cylindrical block 5 moves to the cylindrical protrusion 18. Then, under the action of the chamfer on the cylindrical protrusion 18, the rotating shaft 6 and the cylindrical block 5 become coaxial. The spring continues to push the cylindrical block 5 to move outward, and after the two serrated protrusions 16 on the corresponding side cylindrical block 5 and the rotating shaft 6 engage with each other, the cylindrical block 5 stops moving outward.

[0046] Finally, the sleeves 7 on both sides are pushed toward one side of the roller 3. When the stepped hole 14 and the corresponding blind hole 12 are coaxial, the stopper 13 in the blind hole 12 moves to the inside of the stepped hole 14 under the action of the spring, so that the sleeve 7 stops moving left and right.

[0047] When the sleeve 7 moves toward the roller 3, the sleeve 7 pushes the outer side of the L-shaped rod 11 to swing into the give way groove 10, and the other end of the L-shaped rod 11 swings inward until it contacts the inner end of the rectangular block 9. The sleeve 7 prevents the L-shaped rod 11 from swinging outward, and the L-shaped rod 11 fixes the rectangular block 9, so that the two serrated protrusions 16 on the cylindrical block 5 and the rotating shaft 6 are engaged with each other and fixed, thus completing the installation operation, which is simple and convenient;

[0048] When the roller 3 needs to be replaced, it is only necessary to push the step block 15 inward again, and the step block 15 makes the stop block 13 move into the blind hole 12, and push the sleeves 7 on both sides to move toward the corresponding side vertical plates 2 again; then push the cylindrical blocks 5 on both sides of the roller 3 to move toward the side close to the roller 3. Since the sleeve 7 is no longer in contact with the L-shaped rod 11, when the cylindrical block 5 moves toward the roller 3, the cylindrical block 5 places the L-shaped rod 11 at one end of the rectangular countersunk hole 8 through the rectangular block 9 and swings into the make way groove 10, and the cylindrical block 5 is also disengaged from the rotating shaft 6. After that, it is only necessary to replace the new roller 3 and repeat the above installation steps.

[0049] 1. The utility model makes the rotating shaft 6 and the cylindrical block 5 engage and install for the first time through the serrated protrusion 16 by the axial movement of the cylindrical block 5, and then pushes the sleeve 7, and the sleeve 7 pushes the cylindrical block 5 through the L-shaped rod 11, so that the rotating shaft 6 and the cylindrical block 5 are fixed together through the serrated protrusion 16, and the sleeve 7 is fixed, which can ensure that the rotating shaft 6 does not disengage when driving the roller 3 to rotate.

[0050] 2. The utility model can easily realize the installation and separation of the rotating shaft 6 and the roller 3 by pressing the step block 15, pushing the sleeve 7 and pushing the cylindrical block 5, and no bolts and nuts are used in the whole process, which saves the operation time of rotating the nut, is easy to use and firmly fixed.

Claims

1. A printing press roller that is easy to replace, characterized in that: It comprises a base (1), a vertical plate (2) is installed on the left and right sides of the base (1), a roller (3) is rotated around an axis between the two vertical plates (2), and the axis of the roller (3) is arranged on the left and right sides; A coaxial round rod (4) is fixed to each of the left and right ends of the roller (3); a coaxial cylindrical block (5) which can only move in the axial direction is mounted on the outer end of each round rod (4); the cylindrical block (5) can be fixed after moving axially outward, and the cylindrical block (5) is subjected to a force for moving outward; A rotating shaft (6) is mounted on the inner side of each of the left and right vertical plates (2) and is rotatable around an axis. The rotating shafts (6) are arranged on the left and right sides. A sleeve (7) is sleeved on the outer edge of the rotating shaft (6). The sleeve (7) can move in the axial direction and can be fixed after the sleeve (7) is away from the corresponding side vertical plate (2). When the two round rods (4) are coaxial with the rotating shaft (6), the cylindrical block (5) can be moved outward to be fixed to the rotating shaft (6); when the cylindrical block (5) is fixed to the rotating shaft (6), the sleeve (7) can be moved toward the cylindrical block (5) to fix the cylindrical block (5), and the sleeve (7) can be fixed at the same time; when the sleeve (7) is released from being fixed, the sleeve (7) can be separated from the cylindrical block (5), and the cylindrical block (5) can be separated from the rotating shaft (6).

2. The easily replaceable printing press roller according to claim 1, characterized in that: The outer end surface of the round rod (4) is provided with a rectangular countersunk hole (8); a rectangular block (9) is fixed to one end of the cylindrical block (5) close to the corresponding side round rod (4); the rectangular block (9) is placed in the rectangular countersunk hole (8) and moves in and out; A spring is fixed at the bottom of each rectangular countersunk hole (8), and the other end of the spring is fixed on the rectangular block (9). The spring causes the cylindrical block (5) to be subjected to a force to move outwards through the rectangular block (9).

3. The easily replaceable printing press roller according to claim 2, characterized in that: The outer edge of the round rod (4) is provided with a plurality of clearance grooves (10) penetrating to the rectangular countersunk hole (8). The clearance grooves (10) are evenly distributed about the circumference of the round rod (4). The clearance grooves (10) are arranged left and right in the length direction. An L-shaped rod (11) is installed in each clearance groove (10). The corner of each L-shaped rod (11) is hinged in the clearance groove (10), and the hinge is located on the side away from the roller (3). Both ends of the L-shaped rod (11) can swing toward one side of the roller (3) around the hinge, and both ends can be placed in the clearance groove (10) after swinging toward the roller.

4. The easily replaceable printing press roller according to claim 1, characterized in that: The outer edge of one end of the rotating shaft (6) close to the roller (3) is provided with a plurality of blind holes (12), the plurality of blind holes (12) being evenly distributed about the circumference of the rotating shaft (6), each blind hole (12) being provided with a stopper (13) capable of moving inward and outward, a compression spring being fixed at the bottom of the blind hole (12), the other end of the compression spring being fixed on the stopper (13), and the compression spring applying a force to the stopper (13) to move outward; A plurality of stepped holes (14) penetrating into the sleeve (7) are formed on the outer edge of one end of the sleeve (7) away from the roller (3); the outer diameter of the stepped hole (14) is smaller than the inner diameter; a stepped block (15) capable of moving inward and outward is installed in the stepped hole (14); the inner diameter of the stepped block (15) is larger than the outer diameter of the stepped hole (14); the inner diameter of the stepped hole (14) is larger than the outer diameter of the stopper (13); the stopper (13) can be placed on the inner side of one of the stepped holes (14) after moving outward; and the outer end of the stepped block (15) is placed on the outer side of the sleeve (7) after moving outward.

5. The easily replaceable printing press roller according to claim 1, characterized in that: The outer edge of the outer end surface of the cylindrical block (5) is provided with a serrated protrusion (16), and the outer edge of one end of the rotating shaft (6) close to the cylindrical block (5) is also fixed with a serrated protrusion (16). The serrated protrusion (16) on the cylindrical block (5) can be engaged with the serrated protrusion (16) on the rotating shaft (6), and the rotating shaft (6) can drive the cylindrical block (5) to rotate via the serrated protrusion (16); A coaxial circular hole (17) is formed at the outer end of the cylindrical block (5); a cylindrical protrusion (18) is fixed to one end of the rotating shaft (6) close to the cylindrical block (5); the length of the cylindrical protrusion (18) is greater than the height of the sawtooth protrusion (16); and the cylindrical protrusion (18) can be placed in the circular hole (17) on the cylindrical block (5) on the corresponding side; One end of the cylindrical projection (18) away from the corresponding side rotation shaft (6) is chamfered.

6. The easily replaceable printing press roller according to claim 1, characterized in that: A motor (19) is fixed on the outer side of one of the vertical plates (2); a rotating shaft (6) on the corresponding side where the motor (19) is located passes through the vertical plate (2) on the corresponding side and is connected to the motor (19) via a coupling; the motor (19) drives the rotating shaft (6) to rotate.

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