Paper cutting mechanism that reduces the burden on drive components

Abstract

The present invention relates to a paper cutting mechanism that reduces the burden on a driving member. By designing a movable knife seat structure that can reciprocate along the X-direction, when a first driving member drives a paper cutter to cut the copy paper below, the first cam and the first limiting plane cooperate with each other, and the second cam and the second limiting plane cooperate with each other, so that the movable knife seat can regularly reciprocate along the X-direction, and the saw teeth of the paper cutter blade are used to saw the copy paper below, which can well share the driving force of the first driving member, so that the first driving member can completely cut the copy paper below under a relatively small driving force. During the reciprocating movement of the paper cutter along the X-direction, the sharp edge of the dovetail groove on the paper cutter is used to repeatedly grind the cut surface of the copy paper, so that the cut surface is polished flat and burrs are removed. Paper scraps generated by grinding enter a dust collection groove through the dovetail groove and then enter a dust collection duct from the dust collection groove for discharge, eliminating the need for additional paper scrap processing operations.

Description

Technical Field

[0001] The present invention relates to the technical field of paper cutting mechanisms, and in particular to a paper cutting mechanism capable of reducing the burden on a driving component. Background Art

[0002] Chinese patent with authorization announcement number CN218285745U discloses a paper cutting mechanism that reduces the burden on a driving member; wherein a first hydraulic cylinder is used to drive a cutter to move in a vertical direction to cut the copy paper on a cutting table.

[0003] Since the entire stack of copy paper needs to be cut, the thrust of the driving hydraulic cylinder is required to be very high, and it is difficult to grind the cut surface of the copy paper.

[0004] Therefore, how to improve the paper cutting mechanism and reduce the burden on the driving components so that a whole stack of copy paper can be stably cut with only a smaller driving force has become a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to reduce the burden of the driving component by improving the paper cutting mechanism so that a whole stack of copy paper can be stably cut with only a small driving force.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A paper cutting mechanism for reducing the burden on a driving member, comprising:

[0008] A frame, the frame comprising two columns arranged along the Z direction;

[0009] There are two Z-guide rails, and the two Z-guide rails are connected to the two columns respectively;

[0010] There are two movable seats, and the two movable seats are slidably connected to the two Z guide rails respectively;

[0011] A horizontal frame, both ends of which are respectively connected to the movable seat;

[0012] a first driving member, the first driving member being used to drive the cross frame to move along the Z direction;

[0013] A movable knife seat, the movable knife seat being connected to the lower part of the horizontal frame so as to be reciprocatingly movable along the X direction;

[0014] A first limiting block is connected to one end of the movable knife seat in the X direction, the first limiting block extends in the Y direction, and a first limiting plane perpendicular to the X direction is provided on a surface opposite to the X direction of the first limiting block;

[0015] a first cam, wherein the first cam is rotatably connected to the cross frame and abuts against a first limiting plane of the first limiting block;

[0016] a second driving member, the second driving member being used to drive the first cam to rotate;

[0017] A second limiting block, the second limiting block is connected to the end of the movable knife seat opposite to the X direction, the second limiting block extends in the Y direction, and an X-direction surface of the second limiting block is provided with a second limiting plane perpendicular to the X direction;

[0018] a second cam, the second cam being rotatably connected to the cross frame, the second cam having the same shape as the first cam, the second cam rotating in the same direction as the first cam, the second cam rotating at the same angle and synchronously, and the second cam abutting against the second limiting plane of the second limiting block;

[0019] a third driving member, the third driving member being used to drive the second cam to rotate;

[0020] A paper cutter is detachably connected to the lower portion of a movable knife seat. The blade of the paper cutter has a plurality of dovetail grooves arranged in a line along the X direction and distributed along the Y direction. The paper cutter is provided with a dust suction groove distributed along the X direction, the dust suction groove is connected to a dust suction duct, and the upper end of the dovetail groove is located within the dust suction groove. The blade of the paper cutter is serrated.

[0021] Furthermore, in the above-mentioned paper cutting mechanism that reduces the burden on the driving member, the first cam is shield-shaped, and the first cam includes a longest radius r1, a minimum radius r2 opposite to the longest radius, and two relative transition section radii r3, and r1-r2=2r3.

[0022] Furthermore, in the above-mentioned paper cutting mechanism that reduces the burden on the driving member, one or more limiting shafts are connected between the two movable seats, the axial direction of the limiting shaft is the X direction, and the movable knife seat is provided with a limiting hole that slides with the limiting shaft.

[0023] Furthermore, in the above-mentioned paper cutting mechanism for reducing the burden on the driving member, springs are respectively sleeved on the areas between the two ends of the movable knife seat in the X direction of the limiting shaft and the two movable seats.

[0024] Furthermore, in the above-mentioned paper cutting mechanism for reducing the burden on the driving member, the angle between the blade of the paper cutter and the X direction is 5-15 degrees.

[0025] Furthermore, in the above-mentioned paper cutting mechanism with reduced burden on driving components, the first driving component is a hydraulic cylinder, the moving direction of the hydraulic cylinder is the Z direction, the cylinder body of the hydraulic cylinder is connected to the frame, and the piston rod of the hydraulic cylinder is connected to the cross frame.

[0026] Furthermore, in the above-mentioned paper cutting mechanism with reduced burden on the driving member, the second driving member is a first motor, the first motor is connected to the horizontal frame through a first connecting seat, and the output shaft of the first motor is coaxially connected to the first cam.

[0027] Furthermore, in the above-mentioned paper cutting mechanism with reduced burden on the driving member, the third driving member is a second motor, the second motor is connected to the horizontal frame through a second connecting seat, and the output shaft of the second motor is coaxially connected to the second cam.

[0028] The beneficial effects of the present invention are as follows: in the paper cutting mechanism for reducing the burden of the driving member, the present invention relates to a movable knife seat structure that can reciprocate along the X direction, so that when the movable knife seat is driven downward by the first driving member to drive the paper cutter to cut the copy paper below, the first cam and the first limiting plane cooperate with each other, and the second cam and the second limiting plane cooperate with each other to achieve regular reciprocating movement of the movable knife seat along the X direction, and the saw teeth of the paper cutter blade are used to saw the copy paper below, which can well share the driving force of the first driving member, so that the first driving member can completely cut the copy paper below under a smaller driving force; during the reciprocating movement of the paper cutter along the X direction, the sharp edge of the dovetail groove on the paper cutter is used to repeatedly grind the cut surface of the copy paper, so that the cut surface is polished and smooth, and burrs are removed, and paper scraps generated by grinding will enter the dust suction groove through the dovetail groove, and then enter the dust suction duct from the dust suction groove for discharge, and no additional paper scrap processing operation is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of a paper cutting mechanism that reduces the burden on a driving component according to a specific embodiment of the present invention;

[0030] Figure 2 This is a front view of a paper cutting mechanism that reduces the burden on a driving member according to a specific embodiment of the present invention;

[0031] Figure 3 for Figure 2 B-direction cross-sectional view;

[0032] Figure 4 for Figure 2 C-section diagram;

[0033] Figure 5 for Figure 4 Magnified view of the D part;

[0034] Description of labels:

[0035] 1. Frame; 1001. Column;

[0036] 2. Z guide rail;

[0037] 3. Mobile seat;

[0038] 4. Horizontal frame;

[0039] 5. Hydraulic cylinder;

[0040] 6. Movable knife seat;

[0041] 7. First limiting block; 71. First limiting plane;

[0042] 8. First cam;

[0043] 9. First motor; 91. First connecting seat;

[0044] 10. Second limiting block; 101. Second limiting plane;

[0045] 11. Second cam;

[0046] 12. Second motor; 121. Second connecting base;

[0047] 13. Paper cutter; 131. Dovetail slot; 132. Dust collection slot; 133. Dust collection duct; 134. Blade;

[0048] 14. Limit shaft; 141. Spring. DETAILED DESCRIPTION

[0049] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0050] Please refer to Figures 1 to 5 The specific embodiment of the present invention relates to a paper cutting mechanism that reduces the burden on a driving member, comprising:

[0051] Frame 1, the frame 1 includes two columns 1001 arranged along the Z direction;

[0052] There are two Z-guide rails 2, and the two Z-guide rails 2 are connected to the two columns 1001 respectively;

[0053] There are two movable seats 3, and the two movable seats 3 are slidably connected to the two Z-direction guide rails 2 respectively;

[0054] A horizontal frame 4, both ends of which are connected to the movable base 3;

[0055] a first driving member, the first driving member being used to drive the cross frame 4 to move along the Z direction;

[0056] A movable knife holder 6, which is connected to the lower part of the horizontal frame 4 so as to be reciprocatingly movable along the X direction;

[0057] A first limiting block 7 is connected to one end of the movable knife seat 6 in the X direction. The first limiting block 7 extends in the Y direction. A first limiting plane 71 perpendicular to the X direction is provided on a surface opposite to the X direction of the first limiting block 7.

[0058] a first cam 8 rotatably connected to the cross frame 4 , the first cam 8 abutting against a first limiting plane 71 of the first limiting block 7 ;

[0059] a second driving member, the second driving member being used to drive the first cam 8 to rotate;

[0060] A second limiting block 10 is connected to the end of the movable knife seat 6 opposite to the X direction. The second limiting block 10 extends in the Y direction. The X-direction surface of the second limiting block 10 is provided with a second limiting plane 101 perpendicular to the X direction.

[0061] The second cam 11 is rotatably connected to the cross frame 4. The shape of the second cam 11 is the same as that of the first cam 8. The rotation direction of the second cam 11 is the same as that of the first cam 8. The rotation angles of the second cam 11 are consistent and the second cam 11 rotates synchronously with the first cam 8. The second cam 11 abuts against the second limiting plane 101 of the second limiting block.

[0062] a third driving member, the third driving member being used to drive the second cam 11 to rotate;

[0063] The paper cutter 13 is detachably connected to the lower portion of the movable knife holder 6. The blade of the paper cutter 13 has a plurality of dovetail grooves 131 arranged in a line along the X direction and distributed along the Y direction. The paper cutter 13 is provided with a dust suction groove 132 distributed along the X direction. The dust suction groove 132 is connected to the dust suction duct 133. The upper end of the dovetail groove 131 is located in the dust suction groove 132. The blade 134 of the paper cutter 13 is serrated.

[0064] In the above embodiment, since the first cam 8 and the second cam 11 have the same shape and the same rotation angle and rotation speed, the directions in which the movable knife holder 6 moves are synchronized when the first cam 8 and the second cam 11 rotate simultaneously.

[0065] For example, in the first state, the longest radius r1 ends of the first cam 8 and the second cam 11 are both oriented toward the X direction. At this time, the longest radius r1 of the first cam 8 abuts against the first limiting plane 71, and the shortest radius r2 of the second cam 11 abuts against the second limiting plane 101. At this time, the movable tool holder 6 moves toward the X direction under the limiting action.

[0066] In the second state, the longest radius r1 of the first cam 8 and the second cam 11 are simultaneously oriented toward the Y direction or the opposite direction of the Y direction. At this time, the transition section radius r3 of the first cam 8 abuts against the first limiting plane 71, and the transition section radius r3 of the second cam 11 abuts against the second limiting plane 101. At this time, the movable tool holder 6 returns to its original position under the limiting action.

[0067] In the third state, the longest radius r1 ends of the first cam 8 and the second cam 11 are simultaneously facing in the opposite direction of the X direction. At this time, the shortest radius r2 of the first cam 8 abuts against the first limiting plane 71, and the longest radius r1 of the second cam 11 abuts against the second limiting plane 101. At this time, the movable tool holder 6 moves in the opposite direction of the X direction under the limiting action;

[0068] By continuously controlling the synchronous unidirectional rotation of the first cam 8 and the second cam 11, the above components are made to reciprocate in the above first state, second state, third state, and second state, thereby achieving the purpose of continuously controlling the movable knife holder 6 to reciprocate along the X direction.

[0069] In the above embodiment, by designing a structure of the movable knife holder 6 that can reciprocate along the X direction, when the movable knife holder 6 is driven downward by the first driving member to drive the paper cutter 13 to cut the copy paper below, the first cam 8 and the first limiting plane 71 cooperate with each other, and the second cam 11 and the second limiting plane 101 cooperate with each other to achieve regular reciprocating movement of the movable knife holder 6 along the X direction, and the saw teeth of the blade 134 of the paper cutter 13 are used to cut the copy paper below, which can well share the driving force of the first driving member, so that the first driving member can completely cut the copy paper below under a smaller driving force; during the reciprocating movement of the paper cutter 13 along the X direction, the sharp edge of the dovetail groove 131 on the paper cutter 13 is used to repeatedly grind the cut surface of the copy paper, so that the cut surface is polished smooth and burrs are removed, and paper scraps generated by grinding will enter the dust suction groove 132 through the dovetail groove 131, and then enter the dust suction duct 133 from the dust suction groove 132 for discharge, eliminating the need for additional paper scrap processing operations.

[0070] As an optional embodiment, the first cam 8 is shield-shaped, and includes a longest radius r1, a minimum radius r2 opposite to the longest radius, and two relative transition section radii r3, wherein r1-r2=2r3.

[0071] In the above embodiment, since the paper cutter 13 will be subjected to a large frictional resistance during the paper cutting process, which hinders the reciprocating movement of the paper cutter 13 in the X direction, the shapes and sizes of the above first cam 8 and second cam 11 are such that in the first state, the second state and the third state, the first cam 8 can always abut against the first limiting plane 71, and the second cam 11 can always abut against the second limiting plane 101, so that the reciprocating movement of the movable knife seat 6 in the X direction is regular and stable.

[0072] As an optional embodiment, one or more limiting shafts 14 are connected between the two movable seats 3 , the axial direction of the limiting shaft 14 is the X direction, and the movable tool seat 6 is provided with a limiting hole that slides with the limiting shaft 14 .

[0073] In the above embodiment, the limiting shaft 14 is slidably engaged with the limiting hole of the movable knife seat 6 , so that the movable knife seat 6 can achieve more stable reciprocating movement in the X direction.

[0074] As an optional embodiment, springs 141 are respectively sleeved on the areas between the two ends of the movable knife seat 6 of the limiting shaft 14 in the X direction and the two movable seats 3.

[0075] In the above embodiment, the rebound force of the spring 141 can assist the return of the movable knife holder 6, further making the reciprocating movement of the movable knife holder 6 in the X direction regular and stable.

[0076] As an optional embodiment, the angle between the blade 134 of the paper cutter 13 and the X direction is 5-15 degrees.

[0077] In the above embodiment, the blade 134 of the paper cutter 13 is appropriately tilted, and the blade 134 of the paper cutter 13 first contacts the corner of the upper end of the copy paper below, making it easier to form a cut on the paper surface, making the paper cutting work more labor-saving and stable.

[0078] As an optional embodiment, the first driving member is a hydraulic cylinder 5 , the moving direction of the hydraulic cylinder 5 is the Z direction, the cylinder body of the hydraulic cylinder 5 is connected to the frame 1 , and the piston rod of the hydraulic cylinder 5 is connected to the cross frame 4 .

[0079] As an optional embodiment, the second driving member is a first motor 9 , the first motor 9 is connected to the cross frame 4 through a first connecting seat 91 , and the output shaft of the first motor 9 is coaxially connected to the first cam 8 .

[0080] As an optional embodiment, the third driving member is a second motor 12 , the second motor 12 is connected to the cross frame 4 via a second connecting seat 121 , and the output shaft of the second motor 12 is coaxially connected to the second cam 11 .

[0081] Example 1

[0082] Please refer to Figures 1 to 5A paper cutting mechanism that reduces the burden on a driving member comprises: a frame 1, the frame 1 comprising two columns 1001 arranged along the Z direction; a Z-direction guide rail 2, the number of the Z-direction guide rails 2 being two, the two Z-direction guide rails 2 being respectively connected to the two columns 1001; a movable base 3, the number of the movable base 3 being two, the two movable bases 3 being respectively slidably connected to the two Z-direction guide rails 2; a horizontal frame 4, the two ends of the horizontal frame 4 being respectively connected to the movable base 3; a first driving member, the first driving member being used to drive the horizontal frame 4 to move along the Z direction; A movable knife seat 6, which is connected to the lower part of the cross frame 4 so as to be reciprocatingly movable along the X direction; a first limit block 7, which is connected to one end of the movable knife seat 6 in the X direction, and the first limit block 7 extends in the Y direction, and a first limit plane 71 perpendicular to the X direction is provided on the opposite side of the X direction of the first limit block 7; a first cam 8, which is rotatably connected to the cross frame 4, and the first cam 8 abuts against the first limit plane 71 of the first limit block 7; a second driving member, which is used to drive the first cam 8 to rotate; a second The limiting block 10, the second limiting block 10 is connected to the X-direction opposite end of the movable knife seat 6, the second limiting block 10 extends to the Y direction, and the X-direction side of the second limiting block 10 is provided with a second limiting plane 101 perpendicular to the X direction; the second cam 11, the second cam 11 is rotatably connected to the cross frame 4, the shape of the second cam 11 is the same as the shape of the first cam 8, the rotation direction of the second cam 11 is the same as the rotation direction of the first cam 8, the rotation angle is consistent and rotates synchronously, and the second cam 11 abuts against the second limiting block a second limiting plane 101; a third driving member, the third driving member is used to drive the second cam 11 to rotate; a paper cutter 13, the paper cutter 13 is detachably connected to the lower part of the movable knife seat 6, the blade of the paper cutter 13 is arranged in a line along the X direction and has multiple dovetail grooves 131 distributed along the Y direction, the paper cutter 13 is provided with a dust suction groove 132 distributed along the X direction, the dust suction groove 132 is connected to the dust suction pipe 133, and the upper end of the dovetail groove 131 is located in the dust suction groove 132; the blade 134 of the paper cutter 13 is serrated.

[0083] The first cam 8 is shield-shaped and includes a maximum radius r1, a minimum radius r2 opposite to the maximum radius, and two relative transition radii r3, where r1 - r2 = 2r3. One or more limiting shafts 14 are connected between the two movable seats 3. The limiting shafts 14 are oriented in the X direction. The movable blade holder 6 is provided with limiting holes that slidably engage with the limiting shafts 14. Springs 141 are respectively sleeved between the two ends of the movable blade holder 6 in the X direction of the limiting shaft 14 and the area between the two movable seats 3. The blade 134 of the paper cutter 13 forms an angle of 10 degrees with the X direction. The first driving element is a hydraulic cylinder 5, which moves in the Z direction. The cylinder body of the hydraulic cylinder 5 is connected to the frame 1, and the piston rod of the hydraulic cylinder 5 is connected to the cross frame 4. The second driving element is a first motor 9, which is connected to the cross frame 4 via a first connecting seat 91. The output shaft of the first motor 9 is coaxially connected to the first cam 8. The third driving component is a second motor 12 . The second motor 12 is connected to the cross frame 4 via a second connecting seat 121 . The output shaft of the second motor 12 is coaxially connected to the second cam 11 .

[0084] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A paper cutting mechanism that reduces the burden on the driving member, characterized in that: include: A frame, the frame comprising two columns arranged along the Z direction; There are two Z-guide rails, and the two Z-guide rails are connected to the two columns respectively; There are two movable seats, and the two movable seats are slidably connected to the two Z guide rails respectively; A horizontal frame, both ends of which are respectively connected to the movable seat; a first driving member, the first driving member being used to drive the cross frame to move along the Z direction; A movable knife seat, the movable knife seat being connected to the lower part of the horizontal frame so as to be reciprocatingly movable along the X direction; A first limiting block is connected to one end of the movable knife seat in the X direction, the first limiting block extends in the Y direction, and a first limiting plane perpendicular to the X direction is provided on a surface opposite to the X direction of the first limiting block; a first cam, wherein the first cam is rotatably connected to the cross frame and abuts against a first limiting plane of the first limiting block; a second driving member, the second driving member being used to drive the first cam to rotate; A second limiting block, the second limiting block is connected to the end of the movable knife seat opposite to the X direction, the second limiting block extends in the Y direction, and an X-direction surface of the second limiting block is provided with a second limiting plane perpendicular to the X direction; a second cam, the second cam being rotatably connected to the cross frame, the second cam having the same shape as the first cam, the second cam rotating in the same direction as the first cam, the second cam rotating at the same angle and synchronously, and the second cam abutting against the second limiting plane of the second limiting block; a third driving member, the third driving member being used to drive the second cam to rotate; A paper cutter is detachably connected to the lower portion of a movable knife seat. The blade of the paper cutter has a plurality of dovetail grooves arranged in a line along the X direction and distributed along the Y direction. The paper cutter is provided with a dust suction groove distributed along the X direction, the dust suction groove is connected to a dust suction duct, and the upper end of the dovetail groove is located within the dust suction groove. The blade of the paper cutter is serrated.

2. The paper cutting mechanism for reducing the burden on the driving member according to claim 1, characterized in that: The first cam is in a shield shape and includes a longest radius r1, a minimum radius r2 opposite to the longest radius, and two relative transition section radii r3, wherein r1-r2=2r3.

3. The paper cutting mechanism with reduced burden on the driving member according to claim 1, characterized in that: One or more limiting shafts are connected between the two movable seats, the axial direction of the limiting shafts is the X direction, and the movable tool seat is provided with a limiting hole that is slidably matched with the limiting shafts.

4. The paper cutting mechanism for reducing the burden on the driving member according to claim 3, characterized in that: Springs are respectively sleeved on the areas between the two ends of the movable knife seat of the limiting shaft in the X direction and the two movable seats.

5. The paper cutting mechanism with reduced burden on driving parts according to claim 1, characterized in that: The angle between the blade of the paper cutter and the X direction is 5-15 degrees.

6. The paper cutting mechanism with reduced burden on driving parts according to claim 1, characterized in that: The first driving member is a hydraulic cylinder, the moving direction of the hydraulic cylinder is the Z direction, the cylinder body of the hydraulic cylinder is connected to the frame, and the piston rod of the hydraulic cylinder is connected to the cross frame.

7. The paper cutting mechanism with reduced burden on driving parts according to claim 1, characterized in that: The second driving member is a first motor, the first motor is connected to the cross frame through a first connecting seat, and the output shaft of the first motor is coaxially connected to the first cam.

8. The paper cutting mechanism with reduced burden on driving parts according to claim 1, characterized in that: The third driving component is a second motor, the second motor is connected to the cross frame through a second connecting seat, and the output shaft of the second motor is coaxially connected to the second cam.

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