Cutting bed cutter driving device

Abstract

The invention discloses a cutting bed cutter driving device which comprises a driving base, a main crank assembly and an auxiliary crank assembly, a main sliding block base and an auxiliary sliding block base are arranged on the first side of the driving base, and a main sliding block capable of sliding in the extending direction of the axis of the main sliding block base is arranged in a first through hole of the main sliding block base. An auxiliary sliding block capable of sliding in the extending direction of the axis of the auxiliary sliding block seat is arranged in a second through hole of the auxiliary sliding block seat, and the axis of the first through hole and the axis of the second through hole are collinear. The main crank assembly comprises a main crank rotationally connected to the driving base, a main crank pin shaft eccentrically fixed to the main crank, and a main connecting rod with one end rotationally connected to the main crank pin shaft and the other end rotationally connected to the main sliding block. The auxiliary crank assembly and the main crank assembly are adjacent and arranged in a central symmetry mode. The auxiliary crank assembly comprises an auxiliary crank, an auxiliary crank pin shaft and an auxiliary connecting rod, wherein one end of the auxiliary connecting rod is rotationally connected to the auxiliary crank pin shaft, and the other end of the auxiliary connecting rod is rotationally connected to the auxiliary sliding block. The problem of dynamic unbalance under the high-speed running condition of the cutting bed cutter driving device can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting, and particularly relates to a cutting machine tool knife driving device. Background Art

[0002] The knife driving device is the most critical component of a cutting machine tool, and its performance directly affects the cutting performance of the cutting machine tool. In traditional cutting machine tools, a crank-slider structure is generally adopted. The crank-slider mechanism usually consists of a crank, a connecting rod, and a slider, which converts rotational motion into linear motion. However, the periodic change of inertial force leads to vibration and noise, increases wear, and affects accuracy. The existing fixed counterweight cannot adapt to the inertial changes at different rotational speeds, resulting in limited vibration reduction effect, especially when the crank rotates at a high speed, the inertial force is more obvious, and the unbalanced force and noise of the knife driving device increase sharply when it operates at a high speed.

[0003] Therefore, how to improve the dynamic unbalance problem of the cutting machine tool knife driving device under high-speed operation and reduce the vibration and noise during the operation of the cutting machine tool is a technical problem that needs to be solved by those skilled in the art at present. Summary of the Invention

[0004] The purpose of the present invention is to provide a cutting machine tool knife driving device, which can solve the dynamic unbalance problem of the cutting machine tool knife driving device under high-speed operation, reduce the vibration and noise during the operation of the cutting machine tool, and meet the market demand for a knife driving device with improved cutting machine tool performance and good maintainability.

[0005] To achieve the above purpose, the present invention provides a cutting machine tool knife driving device, including:

[0006] A driving seat, on the first side of the driving seat, there are provided a main slider seat and a secondary slider seat. The main slider seat is provided with a first through hole, and the secondary slider seat is provided with a second through hole whose axis is collinear with the axis of the first through hole. A main slider capable of sliding along the extending direction of its axis is arranged in the first through hole, and a secondary slider capable of sliding along the extending direction of its axis is arranged in the second through hole;

[0007] A main crank assembly, including a main crank rotatably connected to the driving seat, a main crank pin eccentrically fixed to the main crank, and a main connecting rod with one end rotatably connected to the main crank pin and the other end rotatably connected to the main slider;

[0008] A secondary crank assembly, adjacent to and symmetrically arranged with the main crank assembly about the center, including a secondary crank rotatably connected to the driving seat, a secondary crank pin eccentrically fixed to the secondary crank, and a secondary connecting rod with one end rotatably connected to the secondary crank pin and the other end rotatably connected to the secondary slider;

[0009] The main crank and the secondary crank can rotate synchronously and in the same direction in the same plane, so that the phase angle of the main crank and the phase angle of the secondary crank always differ by 180°, and drive the main slider and the secondary slider to slide in opposite directions.

[0010] In a possible implementation, a first bushing is provided in the main slider seat, the first bushing is fixed relative to the main slider seat, and a first slideway is provided in the first bushing for the main slider to slide along the extending direction of the axis of the first through hole;

[0011] A second bushing is arranged in the auxiliary slider seat, the second bushing is fixed relative to the auxiliary slider seat, and a second slideway for the auxiliary slider to slide along the extending direction of the axis of the second through hole is arranged in the second bushing.

[0012] In a possible implementation, the axis of the first bushing and the axis of the second bushing are collinear, and the axis of the first bushing intersects with the rotation axis of the main crank, and the axis of the second bushing intersects with the rotation axis of the secondary crank.

[0013] In a possible implementation, a first balancing block is provided on the main crank, and the first balancing block is eccentrically arranged relative to the rotation axis of the main crank, so that the main crank force during movement is balanced;

[0014] A second balancing block is arranged on the auxiliary crank, and the second balancing block is eccentrically arranged relative to the rotation axis of the auxiliary crank, so that the auxiliary crank force is balanced during movement.

[0015] In a possible embodiment, the main crank is provided with a first eccentric hole, which is used for the main crank pin to be installed to the main crank, and for one end of the main crank pin to protrude from the surface of the main crank to form a first fixed position, and one end of the main connecting rod is rotatably assembled at the first fixed position through a first bearing, and a first retaining spring is clamped at the first fixed position to limit the movement of the first bearing in the extension direction of the axis of the main crank pin.

[0016] In a possible embodiment, the main slider includes a first connecting end located in the extension direction of the axis of the first through hole, and the first connecting end is provided with a first connecting groove. The main slider is also provided with a first mounting hole connected to the first connecting groove and with an axis parallel to the axis of the main crank pin shaft, and a first fixing hole connected to the first mounting hole. The first mounting hole is used to install the main slider pin shaft, and the first fixing hole is used for allowing the first fixing member to pass through to fix the main slider pin shaft to the first mounting hole. The other end of the main connecting rod is rotatably sleeved on the outer periphery of the main slider pin shaft through a second bearing to drive the main slider to slide in the first bushing along the extension direction of the axis of the first through hole.

[0017] In a possible embodiment, the main slider also includes a second connecting end located in the extension direction of the axis of the first through hole, the second connecting end is connected to and fixed to the fixed knife rod through a connecting piece, and an installation groove is provided on the side of the fixed knife rod away from the second connecting end, and the installation groove is used for the cutting knife to be installed and fixed to the fixed knife rod.

[0018] In a possible implementation manner, a counterweight is provided at one end of the secondary sliding block away from the secondary connecting rod.

[0019] In a possible implementation, the drive seat further includes a second side facing away from the first side, and a motor seat is installed on the second side for installing the motor.

[0020] The main crank includes a first transmission rod located on the second side, and a first rotating body is fixed to the outer periphery of the first transmission rod.

[0021] The sub-crank includes a second transmission rod located on the second side, and a second rotating body is fixed to the outer periphery of the second transmission rod. The axis of the first transmission rod is parallel to the axis of the second transmission rod.

[0022] The output end of the motor is drivingly connected to the first rotating body and the second rotating body, and is used to drive the first rotating body and the second rotating body to rotate synchronously and in the same direction in the same plane.

[0023] In a possible implementation, a first expansion sleeve for fixing the first rotating body is provided on the first transmission rod, and a second expansion sleeve for fixing the second rotating body is provided on the second transmission rod.

[0024] Compared with the above background art, the cutting machine tool drive device provided by the present invention includes a drive seat, a main crank assembly, and a sub-crank assembly. A main slider seat and a sub-slider seat are provided on the first side of the drive seat. The main slider seat is provided with a first through hole, and the sub-slider seat is provided with a second through hole whose axis is collinear with the axis of the first through hole. A main slider capable of sliding along the extending direction of its axis is provided in the first through hole, and a sub-slider capable of sliding along the extending direction of its axis is provided in the second through hole. The main crank assembly includes a main crank rotatably connected to the drive seat, a main crank pin eccentrically fixed to the main crank, and a main connecting rod having one end rotatably connected to the main crank pin and the other end rotatably connected to the main slider. The sub-crank assembly is adjacent to and symmetrically arranged with the main crank assembly at the center. The sub-crank assembly includes a sub-crank rotatably connected to the drive seat, a sub-crank pin eccentrically fixed to the sub-crank, and a sub-connecting rod having one end rotatably connected to the sub-crank pin and the other end rotatably connected to the sub-slider. The main crank and the sub-crank can rotate synchronously and in the same direction in the same plane, so that the phase angle of the main crank and the phase angle of the sub-crank always differ by 180°, and drive the main slider and the sub-slider to slide in opposite directions.

[0025] Specifically, by arranging the adjacent and centrosymmetric main crank assembly and auxiliary crank assembly on the same side of the driving seat, the main crank of the main crank assembly and the auxiliary crank of the auxiliary crank assembly can rotate synchronously and in the same direction in the same plane, so that the phase angle of the main crank and the phase angle of the auxiliary crank always differ by 180°. It can ensure in real time that the inertial forces acting on the driving seat in the moving plane of the main crank assembly and the auxiliary crank assembly are equal in magnitude and opposite in direction. While the main crank pin on the main crank drives the main connecting rod to drive the main slider to move along the extension direction of the axis of the first through hole, the auxiliary crank pin on the auxiliary crank drives the auxiliary connecting rod to drive the auxiliary slider to move in the second through hole along the extension direction of the axis of the second through hole. Since the axis of the first through hole and the axis of the second through hole are collinear, and the main crank pin and the auxiliary crank pin are centrosymmetric about the symmetry axis of the main crank assembly and the auxiliary crank assembly, the moving direction of the main slider driven by the main crank pin is opposite to the moving direction of the auxiliary slider driven by the auxiliary crank pin. It can ensure in real time that the inertial forces acting on the driving seat in the moving plane of the main slider and the auxiliary slider are equal in magnitude and opposite in direction. In this way, the dynamic imbalance problem of the cutting machine tool knife driving device under high-speed operation can be improved, and the vibration and noise during the working process of the cutting machine tool can be reduced to meet the market demand for a knife driving device with improved cutting machine tool performance and good maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0027] Figure 1 is a schematic structural diagram of the cutting machine tool knife driving device provided by the embodiment of the present invention;

[0028] Figure 2 is Figure 1 a sectional view taken along A-A in

[0029] Figure 3 is Figure 2 a partially enlarged view taken along C in

[0030] Figure 4 is a schematic structural diagram of the cutting machine tool knife driving device provided by the embodiment of the present invention from another perspective;

[0031] Figure 5 is Figure 1 a sectional view taken along B-B in

[0032] Wherein:

[0033] 10 - Main crank, 11 - Main crank pin shaft, 12 - Main connecting rod, 1202 - First bearing, 1203 - Second bearing, 13 - Main slider, 1302 - Main slider pin shaft, 1303 - Main slider seat, 1304 - First bushing, 1305 - Fixed cutter bar, 1306 - Cutting knife, 1308 - First limiting member, 1309 - First fixing member, 1310 - Connecting member, 1311 - Thrust bearing, 14 - Third bearing, 15 - Fourth bearing, 16 - First rotating body, 17 - First expansion sleeve, 20 - Sub - crank, 21 - Sub - crank pin shaft, 22 - Sub - connecting rod, 2202 - Fifth bearing, 23 - Sub - slider, 2302 - Sub - slider pin shaft, 2303 - Sub - slider seat, 2304 - Second bushing, 2305 - Counterweight, 2306 - Second limiting member, 2307 - Second fixing member, 24 - Sixth bearing, 25 - Seventh bearing, 26 - Second rotating body, 27 - Second expansion sleeve, 28 - Synchronous belt, 29 - Tension pulley, 30 - Driving pulley, 31 - Motor, 32 - Motor output shaft, 33 - Third limiting member, 34 - Gasket, 35 - Eighth bearing, 36 - Support plate, 37 - Fourth limiting member, 38 - Motor fixing plate, 39 - Motor seat, 40 - Driving seat. Detailed implementation mode

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0037] The purpose of the present invention is to provide a cutting machine knife driving device, which can improve the dynamic imbalance problem of the cutting machine knife driving device under high - speed operation, reduce the vibration and noise during the working process of the cutting machine, so as to meet the market's requirements for the performance improvement and good maintainability of the knife driving system.

[0038] Please refer to Figure 1In order to achieve the above-mentioned object, the present invention provides a cutting machine knife driving device, including a driving seat 40, a main crank assembly and a secondary crank assembly, a main slider seat 1303 and a secondary slider seat 2303 are provided on a first side of the driving seat 40, the main slider seat 1303 is provided with a first through hole, the secondary slider seat 2303 is provided with a second through hole whose axis is colinear with the axis of the first through hole, a main slider 13 capable of sliding along the extension direction of its axis is provided in the first through hole, and a secondary slider 23 capable of sliding along the extension direction of its axis is provided in the second through hole; the main slider seat 1303 and the secondary slider seat 2303 are provided with a first through hole, and the secondary slider seat 2303 is provided with a second ... A first bushing 1304 is provided in 303, the first bushing 1304 is arranged in the first through hole and fixed relative to the main slider seat 1303, and a first slideway is provided in the first bushing 1304 for the main slider 13 to slide along the extension direction of the axis of the first through hole; a second bushing 2304 is provided in the auxiliary slider seat 2303, the second bushing 2304 is arranged in the second through hole and fixed relative to the auxiliary slider seat 2303, and a second slideway is provided in the second bushing 2304 for the auxiliary slider 23 to slide along the extension direction of the axis of the second through hole.

[0039] The main crank assembly includes a main crank 10 rotatably connected to a driving seat 40, a main crank pin 11 eccentrically fixed to the main crank 10, and a main connecting rod 12 rotatably connected to the main crank pin 11 at one end and rotatably connected to a main slider 13 at the other end, wherein the end of the main slider 13 facing away from the main connecting rod 12 is used to connect with a cutting knife 1306, and the main connecting rod 12 converts the circumferential rotational motion of the main crank 10 into a reciprocating sliding of the main slider 13 along the extension direction of the axis of the first through hole, thereby realizing the reciprocating movement of the cutting knife 1306 for cutting.

[0040] The secondary crank assembly is adjacent to the main crank assembly and is arranged symmetrically with respect to the center, including a secondary crank 20 rotatably connected to the driving seat 40, a secondary crank pin 21 eccentrically fixed to the secondary crank 20, and a secondary connecting rod 22 rotatably connected to the secondary crank pin 21 at one end and rotatably connected to the secondary slider 23 at the other end; it should be noted that when the back and forth movement of the cutting knife 1306 is a vertical movement, the rotation plane of the main crank 10 and the rotation plane of the secondary crank 20 are coplanar vertical planes, that is, the moving direction of the cutting knife 1306 is perpendicular to the rotation axis of the main crank 10 and the secondary crank 20.

[0041] The main crank 10 and the secondary crank 20 can rotate synchronously and in the same direction in the same plane. Synchronous means that when the main crank 10 rotates, the secondary crank 20 also rotates, and the rotation rate of the secondary crank 20 is consistent with the rotation rate of the main crank 10; the same direction means that the main crank 10 and the secondary crank 20 both rotate clockwise or counterclockwise at the same viewing angle; the main crank 10 and the secondary crank 20 are symmetrical in their initial positions, and the main crank 10 and the secondary crank 20 make the same movement, so that the phase angle of the main crank 10 and the phase angle of the secondary crank 20 always differ by 180°, and drive the main slider 13 and the secondary slider 23 to slide in opposite directions.

[0042] By arranging the main crank assembly and the sub-crank assembly which are adjacent and centrosymmetric on the same side of the driving seat 40, and enabling the main crank 10 of the main crank assembly and the sub-crank 20 of the sub-crank assembly to rotate synchronously and in the same direction in the same plane, so that the phase angles of the main crank 10 and the sub-crank 20 always differ by 180°, it can be ensured in real time that the inertial forces received by the driving seat 40 in the motion plane of the main crank assembly and the sub-crank assembly are equal in magnitude and opposite in direction. While the main crank pin 11 on the main crank 10 drives the main connecting rod 12 to drive the main slider 13 to move along the extension direction of the axis of the first through hole in the first through hole, the sub-crank pin 21 on the sub-crank 20 drives the sub-connecting rod 22 to drive the sub-slider 23 to move along the extension direction of the axis of the second through hole in the second through hole. By making the axes of the first through hole and the second through hole collinear, and the main crank pin 11 and the sub-crank pin 21 are centrosymmetric about the symmetry axis of the main crank assembly and the sub-crank assembly, the moving direction of the main slider 13 driven by the main crank pin 11 is opposite to the moving direction of the sub-slider 23 driven by the sub-crank pin 21, so that it can be ensured in real time that the inertial forces received by the driving seat 40 in the motion plane of the main slider 13 and the sub-slider 23 are equal in magnitude and opposite in direction. In this way, the dynamic unbalance problem of the knife driving device of the cutting machine under high-speed operation can be improved, and the vibration and noise during the working process of the cutting machine can be reduced to meet the market demand for a knife driving device with improved cutting machine performance and good maintainability.

[0043] In a possible implementation manner, the axis of the first bushing 1304 is collinear with the axis of the first through hole, and the axis of the second bushing 2304 is collinear with the axis of the second through hole, so that the axis of the first bushing 1304 and the axis of the second bushing 2304 are collinear, and the axis of the first bushing 1304 intersects with the rotation axis of the main crank 10, and the axis of the second bushing 2304 intersects with the rotation axis of the sub-crank 20.

[0044] In a possible implementation manner, the mass of the main connecting rod 12 will affect the inertial force and vibration of the device, and it needs to be equivalent to both ends, that is, the mass of the main connecting rod 12 is equivalent to the main crank pin 11 and the main slider 13. A first balance block is provided on the main crank 10, and the first balance block is eccentrically arranged with respect to the rotation axis of the main crank 10, so that the mass equivalent to the main crank pin 11, the main crank 10 including the first balance block, and the main crank pin 11 are subjected to static balance design at the rotation axis of the main crank 10 (the rotation axis of the main crank 10 is also the rotation axis of the main crank 10), so that the centers of mass of the equivalent main crank 10 (including the first balance block), the main crank pin 11, and the equivalent mass transferred to the main crank pin 11 are on the rotation axis of the main crank 10, so that the main crank 10 is force-balanced during motion.

[0045] Similarly, the mass of the secondary connecting rod 22 needs to be equivalent to the secondary crank pin shaft 21 and the secondary slider 23. A second balance weight is provided on the secondary crank 20, and the second balance weight is eccentrically arranged relative to the rotation axis of the secondary crank 20. The same method is also used for the secondary crank 20 so that the center of mass of the equivalent secondary crank 20 (including the second balance weight), the secondary crank pin shaft 21, and the equivalent mass transferred to the secondary crank pin shaft 21 is on the rotation axis of the secondary crank 20 (the rotation axis of the secondary crank 20 is also the rotation axis of the secondary crank 20), making the force of the secondary crank 20 balanced during movement, and further satisfying the force balance received by the entire drive seat 40.

[0046] A crank-slider mechanism is formed by the main crank 10, the main crank pin shaft 11, the main connecting rod 12, and the main slider 13, and another crank-slider mechanism is formed by the secondary crank 20, the secondary crank pin shaft 21, the secondary connecting rod 22, and the secondary slider 23. Since the above two crank-slider mechanisms move symmetrically, and the equivalent center of mass of the main crank 10 and the equivalent center of mass of the secondary crank 20 are both at their respective centers of mass, it can be ensured in real time that the inertial forces of the drive seat 40 in the movement planes of the two crank-slider mechanisms are equal in magnitude and opposite in direction, and the torque perpendicular to this plane is controlled within zero or a very small range. At the same time, since the movement planes of the two crank-slider mechanisms coincide, no additional additional torque will be generated, thus achieving a good dynamic balance effect of the tool drive device through this structure.

[0047] Please refer to Figure 2 and Figure 3 In a possible implementation manner, the main crank 10 is provided with a first eccentric hole for installing the main crank pin shaft 11 to the main crank 10 and making one end of the main crank pin shaft 11 protrude from the surface of the main crank 10 to form a first fixed position. There is a specific eccentric distance between the axis of the main crank pin shaft 11 and the rotation axis of the main crank 10. One end of the main connecting rod 12 is rotatably assembled at the first fixed position through a first bearing 1202, and a first circlip is clamped at the first fixed position to limit the movement of the first bearing 1202 in the extending direction of the axis of the main crank pin shaft 11, and further limit the movement of the main connecting rod 12 in the extending direction of the axis of the main crank pin shaft 11.

[0048] Similarly, the secondary crank 20 is provided with a second eccentric hole for installing the secondary crank pin shaft 21 to the secondary crank 20 and making one end of the secondary crank pin shaft 21 protrude from the surface of the secondary crank 20 to form a second fixed position. There is a specific eccentric distance between the axis of the secondary crank pin shaft 21 and the rotation axis of the secondary crank 20. One end of the secondary connecting rod 22 is rotatably assembled at the second fixed position through a fifth bearing 2202, and a second circlip is clamped at the second fixed position to limit the movement of the third bearing 14 in the extending direction of the axis of the secondary crank pin shaft 21, and further limit the movement of the secondary connecting rod 22 in the extending direction of the axis of the secondary crank pin shaft 21.

[0049] In a possible embodiment, the main slider 13 includes a first connecting end located in the extension direction of the axis of the first through hole, and the first connecting end is provided with a first connecting groove. The main slider 13 is also provided with a first mounting hole connected to the first connecting groove and with an axis parallel to the axis of the main crank pin 11, and a first fixing hole connected to the first mounting hole. The first mounting hole is used to install the main slider pin 1302, and the axis of the main slider pin 1302 is parallel to the axis of the main crank pin 11. The first fixing hole is used for allowing the first fixing member 1309 to pass through to fix the main slider pin 1302 to the first mounting hole. The other end of the main connecting rod 12 is rotatably sleeved on the outer periphery of the main slider pin 1302 through the second bearing 1203. The main connecting rod 12 can push and pull the main slider 13 through the main slider pin 1302, so as to drive the main slider 13 to slide in the first bushing 1304 along the extension direction of the axis of the first through hole.

[0050] The auxiliary slider 23 includes a first fixed end located in the extension direction of the axis of the second through hole, and a second connecting groove is opened in the first fixed end. The auxiliary slider 23 is also provided with a second mounting hole connected to the second connecting groove and with an axis parallel to the extension direction of the axis of the auxiliary crank pin 21, and a second fixing hole connected to the second mounting hole. The second mounting hole is used to install the auxiliary slider pin 2302, and the axis of the auxiliary slider pin 2302 is parallel to the axis of the auxiliary crank pin 21. The second fixing hole is used for the second fixing piece 2307 to pass through so as to fix the auxiliary slider pin 2302 to the second mounting hole. The other end of the auxiliary connecting rod 22 is rotatably sleeved on the outer periphery of the auxiliary slider pin 2302 through a bearing. The auxiliary connecting rod 22 can be connected to the auxiliary slider 23 through the auxiliary slider pin 2302. Push and pull are performed to drive the auxiliary slider 23 to slide in the second bushing 2304 along the axial extension direction of the second through hole. The second fixed end of the auxiliary slider 23 is connected to a counterweight 2305, that is, a counterweight 2305 is provided at the end of the auxiliary slider 23 away from the auxiliary connecting rod 22, and the counterweight 2305 is fixed to the auxiliary slider 23 by a second limiting member 2306. The weight of the auxiliary connecting rod 22 is equal to the weight of the main connecting rod 12. The sum of the weights of the counterweight 2305 and the auxiliary slider 23 is equal to the sum of the weights of the cutting knife 1306, the fixing knife rod 1305, and the main slider 13. The weight of the cutting knife 1306 and the fixing knife rod 1305 is balanced by the counterweight 2305 to achieve complete balance. The second limiting member 2306 can be, but is not limited to, a screw.

[0051] Among them, the number of the first fixing holes and the number of the second fixing holes are both two, and the axial extension directions of the first fixing holes and the second fixing holes are parallel to the axial extension direction of the first through hole, so as to facilitate the installation of the first fixing member 1309 and the second fixing member 2307 on the opposite side of the main slider 13 and the auxiliary slider 23. A flat key is provided on the side of the main slider pin 1302 facing the first fixing hole, and a flat key is provided on the side of the auxiliary slider pin 2302 facing the second fixing hole. The first fixing member 1309 and the second fixing member 2307 can be but are not limited to fastening screws, which can limit the movement and rotation of the main slider pin 1302 and the auxiliary slider pin 2302 by abutting against the flat key position of the fastening screws.

[0052] In a possible embodiment, the main slider 13 also includes a second connecting end located in the extension direction of the axis of the first through hole, and the second connecting end is connected to and fixes the fixed knife rod 1305 through a connecting member 1310. The connecting member 1310 can be but is not limited to a bolt, and a thrust bearing 1311 is provided between the connecting member 1310 and the second connecting end, which is used to bear the axial load and transmit the axial force along the axial direction. An installation groove is provided on the side of the fixed knife rod 1305 away from the second connecting end, and the installation groove is used for the first limiting member 1308 to pass through so that the cutting knife 1306 can be installed and fixed to the fixed knife rod 1305. The first limiting member 1308 can be but is not limited to a bolt. The number of the first limiting members 1308 can be increased or decreased according to actual needs, as long as the cutting knife 1306 can be fixed.

[0053] See also Figure 4 and Figure 5 In a possible implementation manner, the drive seat 40 further includes a second side away from the first side, and a motor seat 39 is installed on the second side, and the motor seat 39 is used to install the power supply 31; the motor 31 includes a motor fixing plate 38, and bolts are passed through threaded holes on the motor fixing plate 38 and screwed into threaded holes corresponding to the motor seat 39 to fix the motor 31 relative to the motor seat 39. The main crank 10 is rotatably connected to the drive seat 40 through a third bearing 14 and a fourth bearing 15. The main crank 10 includes a first transmission rod located on the second side, and a first rotating body 16 is fixed to the outer periphery of the first transmission rod. A first expansion sleeve 17 for fixing the first rotating body 16 is provided on it; the auxiliary crank 20 is rotatably connected to the driving seat 40 through the sixth bearing 24 and the seventh bearing 25, the auxiliary crank 20 includes a second transmission rod located on the second side, a second rotating body 26 is fixed on the outer periphery of the second transmission rod, and a second expansion sleeve 27 for fixing the second rotating body 26 is provided on the second transmission rod, and the axis of the first transmission rod is parallel to the axis of the second transmission rod; the output end of the motor 31 is transmission-connected to the first rotating body 16 and the second rotating body 26, and is used to drive the first rotating body 16 and the second rotating body 26 to rotate synchronously and in the same direction in the same plane.

[0054] Among them, a support plate 36 may be provided on one side of the motor 31 facing the drive seat 40. The support plate 36 is installed on the motor fixing plate 38 through a fourth limiting member 37. The fourth limiting member 37 may be, but is not limited to, a bolt, so that the support plate 36 is fixed relative to the motor 31. At the same time, a driving wheel 30 is provided in the middle of the support plate 36. An eighth bearing 35 is provided between the driving wheel 30 and the support plate 36, so that the driving wheel 30 can rotate relative to the support plate 36. At the same time, the driving wheel 30 is connected to the motor output shaft 32 of the motor 31. Specifically, after the third limiting member 33 is screwed into the driving wheel 30 from the side of the driving wheel 30 facing the drive seat 40, the motor output shaft 32 is connected, so that the driving wheel 30 is fixed to the motor output shaft 32. The third limiting member 33 may be, but is not limited to, a bolt, and a gasket 34 is installed at the end of the bolt to prevent the bolt from loosening. The first rotating body 16 and the second rotating body 26 may be, but are not limited to, belt pulleys. The synchronous belt 28 is wound around the driving wheel 30, the first rotating body 16 and the second rotating body 26, so that the motor output shaft 32 drives the first rotating body 16 and the second rotating body 26 to rotate synchronously and in the same direction, ensuring that the phase angles of the main crank 10 and the sub-crank 20 always differ by 180°. A third rotating body is further provided on the second side of the drive seat 40. The axis of the third rotating body is parallel to the axis of the first transmission rod, and the third rotating body adopts a tension pulley 29 to keep the synchronous belt 28 under appropriate tension and prevent the synchronous belt 28 from slipping.

[0055] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0056] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0057] Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A cutting machine knife driving device, characterized in that: include: A drive seat (40), wherein a first side of the drive seat (40) is provided with a main slider seat (1303) and a secondary slider seat (2303), the main slider seat (1303) is provided with a first through hole, the secondary slider seat (2303) is provided with a second through hole whose axis is colinear with the axis of the first through hole, the first through hole is provided with a main slider (13) capable of sliding along the direction in which the axis extends, and the second through hole is provided with a secondary slider (23) capable of sliding along the direction in which the axis extends; A main crank assembly, comprising a main crank (10) rotatably connected to the driving seat (40), a main crank pin (11) eccentrically fixed to the main crank (10), and a main connecting rod (12) rotatably connected to the main crank pin (11) at one end and rotatably connected to the main slider (13) at the other end; A secondary crank assembly is adjacent to the main crank assembly and is centrally symmetrically arranged, comprising a secondary crank (20) rotatably connected to the drive seat (40), a secondary crank pin (21) eccentrically fixed to the secondary crank (20), and a secondary connecting rod (22) rotatably connected to the secondary crank pin (21) at one end and rotatably connected to the secondary slider (23) at the other end; The main crank (10) and the auxiliary crank (20) can rotate synchronously and in the same direction in the same plane, so that the phase angle of the main crank (10) and the phase angle of the auxiliary crank (20) always differ by 180 degrees, and drive the main slider (13) and the auxiliary slider (23) to slide in opposite directions.

2. The cutting machine knife driving device according to claim 1, characterized in that: A first bushing (1304) is provided in the main slider seat (1303), the first bushing (1304) is fixed relative to the main slider seat (1303), and a first slideway is provided in the first bushing (1304) for allowing the main slider (13) to slide along the extension direction of the axis of the first through hole; A second bushing (2304) is provided in the auxiliary slider seat (2303), the second bushing (2304) is fixed relative to the auxiliary slider seat (2303), and a second slideway is provided in the second bushing (2304) for allowing the auxiliary slider (23) to slide along the extension direction of the axis of the second through hole.

3. The cutting machine knife driving device according to claim 2, characterized in that: The axis of the first bushing (1304) and the axis of the second bushing (2304) are collinear, and the axis of the first bushing (1304) intersects with the rotation axis of the main crank (10), and the axis of the second bushing (2304) intersects with the rotation axis of the secondary crank (20).

4. The cutting machine knife driving device according to claim 1, characterized in that: A first balancing block is provided on the main crank (10), and the first balancing block is eccentrically arranged relative to the rotation axis of the main crank (10) so as to balance the force of the main crank (10) during movement; The secondary crank (20) is provided with a second balancing block, and the second balancing block is eccentrically arranged relative to the rotation axis of the secondary crank (20) so as to balance the force of the secondary crank (20) during movement.

5. The cutting machine knife driving device according to claim 1, characterized in that: The main crank (10) is provided with a first eccentric hole, the first eccentric hole is used for the main crank pin (11) to be installed on the main crank (10), and one end of the main crank pin (11) protrudes from the surface of the main crank (10) to form a first fixed position, one end of the main connecting rod (12) is rotatably assembled at the first fixed position through a first bearing (1202), and a first retaining spring is clamped at the first fixed position to limit the first bearing (1202) from moving in the extension direction of the axis of the main crank pin (11).

6. The cutting machine knife driving device according to claim 2, characterized in that: The main slider (13) includes a first connecting end located in the extension direction of the axis of the first through hole, the first connecting end is provided with a first connecting groove, the main slider (13) is also provided with a first mounting hole connected to the first connecting groove and the axis of which is parallel to the axis of the main crank pin (11), and a first fixing hole connected to the first mounting hole, the first mounting hole is used to install the main slider pin (1302), the first fixing hole is used for a first fixing member (1309) to pass through so as to fix the main slider pin (1302) to the first mounting hole, the other end of the main connecting rod (12) is rotatably sleeved on the outer periphery of the main slider pin (1302) through a second bearing (1203) so as to drive the main slider (13) to slide in the first bushing (1304) along the extension direction of the axis of the first through hole.

7. The cutting machine knife driving device according to claim 1, characterized in that: The main slider (13) further comprises a second connection end located in the extension direction of the axis of the first through hole, the second connection end being connected to and fixed to a knife fixing rod (1305) via a connection piece (1310), and a mounting groove is provided on a side of the knife fixing rod (1305) facing away from the second connection end, the mounting groove being used for mounting and fixing a cutting knife (1306) to the knife fixing rod (1305).

8. The cutting machine knife driving device according to claim 1, characterized in that: A counterweight block (2305) is provided at one end of the auxiliary sliding block (23) facing away from the auxiliary connecting rod (22).

9. The cutting machine knife driving device according to claim 1, characterized in that: The drive seat (40) further comprises a second side facing away from the first side, the second side being equipped with a motor seat (39), the motor seat (39) being used for installing the electric machine (31); The main crank (10) comprises a first transmission rod located on the second side, a first rotating body (16) being fixed to the outer periphery of the first transmission rod; The secondary crank (20) comprises a second transmission rod located on the second side, a second rotating body (26) is fixed to the outer periphery of the second transmission rod, and the axis of the first transmission rod is parallel to the axis of the second transmission rod; The output end of the motor (31) is drivingly connected to the first rotating body (16) and the second rotating body (26), and is used to drive the first rotating body (16) and the second rotating body (26) to rotate synchronously and in the same direction in the same plane.

10. The cutting machine knife driving device according to claim 9, characterized in that: The first transmission rod is provided with a first expansion sleeve (17) for fixing the first rotating body (16), and the second transmission rod is provided with a second expansion sleeve (27) for fixing the second rotating body (26).

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