Servo conveying mechanism of paper feeding machine of die-cutting machine

Abstract

The utility model discloses a servo conveying mechanism of a paper feeding machine of a die-cutting machine, which comprises a left wall plate and a right wall plate which are opposite to each other, a cam shaft, an inching roller and a fixed roller which are arranged between the left wall plate and the right wall plate in parallel from bottom to top, and two inching assemblies arranged between the left wall plate and the right wall plate, the first servo motor and the second servo motor are installed on the inner wall of the right wall plate, the first transmission assembly is connected with the first servo motor and the cam shaft, and the second transmission assembly is connected with the second servo motor, the fixed roller and the point wheel roller. Each inching assembly comprises a cam, a lower swing arm, a fulcrum bearing, a connecting rod and an upper swing arm; the distance adjusting assembly comprises a deviation wheel shaft, two eccentric wheels, a hand-cranking worm gear speed reducer and a gap adjusting hand wheel. The servo power connecting rod is adopted to control inching of the upper roller and the lower roller, and the technical purposes of high-precision paper conveying, rapid paper adjustment, production efficiency improvement and noise reduction are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a servo conveying mechanism of die cutting machine paper feeding machine belongs to die cutting machine paper feeding machine technical field. BACKGROUND

[0002] The die cutting machine paper feeding machine is widely used in packaging, printing and other industries, and the working process mainly involves paper conveying and positioning, and subsequent die cutting. Specifically speaking, (1) paper conveying: the paper feeder conveys the paper to the front gauge and the side gauge for preliminary positioning through the paper feeding part; (2) secondary positioning: the paper is then sent to the die cutting mechanism by the tooth row for secondary positioning to ensure the accuracy of die cutting; (3) die cutting process: in the die cutting mechanism, the paperboard or corrugated paper is cut into a specific shape by using a die cutting knife, a steel knife, a hardware die and the like through a printing plate to apply a certain pressure; (4) subsequent processing: after the die cutting is completed, the paper is conveyed to the waste discharge mechanism by the tooth row to remove the unnecessary part, and then enters the paper receiving part to complete the whole die cutting operation.

[0003] However, the conveying structure of the die cutting machine paper feeding machine on the market at present mostly adopts a paper feeding mechanism driven by a mechanical cam and a connecting rod. This mechanism not only has a relatively complex structure and generates a large noise during operation, but also needs to be adjusted by the operator according to experience, which wastes a lot of time, increases the labor intensity of the operator and also leads to a reduction in production efficiency.

[0004] Therefore, it is urgent to develop a servo conveying mechanism of die cutting machine paper feeding machine to solve the above technical problems. SUMMARY

[0005] In view of the above existing technical problems, the utility model provides a servo conveying mechanism of die cutting machine paper feeding machine, which adopts a servo power connecting rod to control the point motion of the upper and lower rollers to achieve the technical purposes of high-precision paper conveying, rapid adjustment of the paper, improved production efficiency and reduced noise.

[0006] To achieve the above technical purposes, the utility model provides a servo conveying mechanism of die cutting machine paper feeding machine, which comprises opposite left and right wall plates, a cam shaft, a point wheel roller and a fixed roller which are arranged in parallel from bottom to top between the left and right wall plates, two point motion assemblies arranged between the left and right wall plates, a first servo motor and a second servo motor installed on the inner wall of the right wall plate, a first transmission assembly connecting the first servo motor and the cam shaft, a second transmission assembly connecting the second servo motor and the fixed roller and the point wheel roller, and a pitch adjusting assembly.

[0007] Each point motion assembly comprises a cam, a lower swing arm, a fulcrum bearing, a connecting rod and an upper swing arm.

[0008] The left and right ends of the cam shaft are respectively sleeved with cams; the middle part of each lower swing arm is provided with a fulcrum bearing; each fulcrum bearing is located above the cam on the same side and can be lifted upward by the cam on the same side.

[0009] The upper swing arm is fixed on the wall plate on the same side through the upper swing arm fixing shaft at the front end, and can rotate freely around the swing arm fixing shaft; the rear end of each upper swing arm is connected with the top end of the connecting rod on the same side through the upper swing arm support shaft; the bottom end of each connecting rod is connected with the rear end of the lower swing arm on the same side through the lower swing arm fixing shaft;

[0010] The distance adjusting assembly comprises a deflection wheel shaft, two eccentric wheels, a hand-operated worm gear reducer and a gap adjusting hand wheel;

[0011] Each eccentric wheel is inserted into the front end of the lower swing arm on the same side and can rotate freely inside the front end of the lower swing arm; the left and right ends of the deflection wheel shaft are connected with the eccentric wheels on the same side;

[0012] The hand-operated worm gear reducer and the gap adjusting hand wheel are arranged on the outer wall of the left wall plate; the gap adjusting hand wheel is connected with the hand-operated worm gear reducer; the hand-operated worm gear reducer is connected with the eccentric wheel shaft which passes through the left end of the left wall plate;

[0013] Symmetrical round holes are formed in the left and right wall plates; the left and right ends of the point wheel roller are inserted into the round holes on the same side and can be lifted up and down inside the round holes under the driving of the point driving assembly and can adjust the lifting height under the driving of the distance adjusting assembly.

[0014] Further, each point driving assembly further comprises a tension spring;

[0015] The rear end of each lower swing arm is connected with the top end of the tension spring on the same side through the lower swing arm fixing shaft; the bottom end of each tension spring is fixed on the wall plate on the same side, so that each eccentric wheel can be closely attached to the fulcrum bearing on the same side.

[0016] Further, the first transmission assembly comprises a second driving synchronous pulley and a third driven synchronous pulley;

[0017] The output shaft of the first servo motor passes through the right wall plate and is provided with the second driving synchronous pulley; the right end of the cam shaft passes through the right wall plate and is provided with the third driven synchronous pulley; and the second driving synchronous pulley and the third driven synchronous pulley are connected through a conveying belt.

[0018] Further, the second transmission assembly comprises a first driving synchronous pulley, a first driven synchronous pulley, two synchronous belt tension pulleys, a second driven synchronous pulley, a first gear, a first intermediate gear, a second intermediate gear and a second gear;

[0019] The output shaft of the second servo motor passes through the right wall plate and is provided with the first driving synchronous pulley; the right end of the fixed roller passes through the right wall plate and is provided with the first driven synchronous pulley; the right end of the fixed roller passes through the right wall plate and is provided with the second gear.

[0020] The second driven synchronous pulley is arranged on the left wall plate outer wall and located at the rear side of the first driven synchronous pulley; and the first driving synchronous pulley, the first driven synchronous pulley and the second driven synchronous pulley are connected through the first transmission belt;

[0021] The second driven synchronous pulley is arranged on the left wall plate outer wall and located at the rear side of the first driven synchronous pulley; and the first driving synchronous pulley, the first driven synchronous pulley and the second driven synchronous pulley are connected through the first transmission belt;

[0022] The second transmission assembly further comprises two synchronous belt tension pulleys;

[0023] The two synchronous belt tension pulleys are respectively arranged between the first driving synchronous pulley and the first driven synchronous pulley, and between the first driving synchronous pulley and the second driven synchronous pulley, and tension the left and right sides of the first transmission belt.

[0024] The left and right wall plates are further provided with a lower roller supporting circular beam parallel to the fixed roller;

[0025] The middle part of the lower roller supporting circular beam and the middle part of the fixed roller are connected through the supporting block, and the fixed roller can freely rotate inside the front end of the supporting block.

[0026] The first servo motor and the second servo motor are respectively electrically connected to the die cutting machine host, and are signal linked with the die cutting machine host.

[0027] The first servo motor controls the phase time of the point wheel stick down, that is, when the front end of the paper reaches the fixed roller and the point roller center tangent line position, the first servo motor drives the point roller to press down, and the point roller and the fixed roller can just bite the front end of the paper.

[0028] The above technical scheme can be known, the utility model discloses an advanced servo motor control technology, through the first servo motor accurate control point wheel roller's relative phase lifting time, and through the clearance adjusting hand wheel fine tuning eccentric wheel accurate control fixed roller and point roller between the gap size, still through servo power link control point roller in rotation point motion, realized to die cutting machine paper feeder point motion roller's lifting height, fixed roller and point roller between the pressure size and the accurate control of paper conveying time length. This design not only improves the precision and stability of paper conveying, but also effectively avoids the damage of paper in the conveying process, has high-precision paper feeding, paper fast adjustment, high production efficiency and low noise advantages.

[0029] Compared with the prior art, the utility model has the following technical advantages:

[0030] A, the lifting height and pressure of the precise control point dynamic roller: through the first servo motor, the point dynamic assembly, the distance adjusting assembly, the first transmission assembly, the lifting height of the point dynamic roller can be adjusted, thereby the pressure between the fixed roller and the point dynamic roller is accurately controlled.

[0031] B, the precise control paper conveying time length: the first servo motor precisely controls the down pressure time length of the point wheel roller, can control the paper conveying time length of the paper feeding part and the rear conveying pressure wheel.

[0032] C, servo motor control and die cutting machine host signal linkage: the control signal of the first servo motor and the second servo motor is derived from the host of the front die cutting machine, and realizes the linkage with the signal of the die cutting machine host.

[0033] In summary, the utility model realizes the precise control to the paper conveying process in the paper feeder of the die cutting machine. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the structure diagram of the utility model Figure 1 ;

[0035] Figure 2 It is the structure diagram of the utility model Figure 2 ;

[0036] Figure 3 It is the structure diagram of the point dynamic assembly in the utility model;

[0037] Figure 4 It is the structure diagram of the transmission assembly in the utility model;

[0038] In the figure: 1, first servo motor, 101, second driving synchronous pulley, 102, third driven synchronous pulley, 2, camshaft, 3, cam, 4, fulcrum bearing, 5, lower swing arm, 6, eccentric wheel, 7, connecting rod, 8, upper swing arm, 81, upper swing arm fixed shaft, 82, upper swing arm support shaft, 9, fixed roller, 10, point wheel roller, 12, gap adjusting hand wheel, 13, tension spring, 131, lower swing arm fixed shaft, 14, second servo motor, 141, first driving synchronous pulley, 142, first driven synchronous pulley, 143, synchronous belt tension pulley, 144, second driven synchronous pulley, 145, first gear, 146, first intermediate gear, 147, second intermediate gear, 148, second gear, 15, lower roller support round beam, 16, eccentric shaft. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described clearly and completely below in combination with the utility model embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the scope of protection of the utility model.

[0040] In the description of the present application, "connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. For the ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the description of the present application, "up", "down", "front", "back", "left", "right" and the like are only used to indicate relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] As shown in Figure 1 , Figure 2 The servo conveying mechanism of the paper feeding machine of the die-cutting machine comprises opposite left wall plates and right wall plates, a camshaft 2, a point wheel roller 10 and a fixed roller 9 which are arranged between the left wall plates and the right wall plates and are parallel from bottom to top, two point dynamic assemblies, a first servo motor 1 and a second servo motor 14 which are installed on the inner wall of the right wall plate, a first transmission assembly which is arranged on the outer wall of the right wall plate and connects the first servo motor 1 with the camshaft 2 and the eccentric shaft 16, a second transmission assembly which is arranged on the outer wall of the right wall plate and connects the second servo motor 14 with the fixed roller 9 and the point wheel roller 10, and a pitch adjusting assembly, which are specifically introduced as follows.

[0043] As shown in Figure 3As shown in the figure, each point assembly includes cam 3, lower swing arm 5, fulcrum bearing 4, lower swing arm fixed shaft 131, connecting rod 7, upper swing arm 8, upper swing arm fixed shaft 81, and upper swing arm support shaft 82.

[0044] The camshaft 2 is sleeved with a cam 3 at both ends. Each lower swing arm 5 is installed with a fulcrum bearing 4 in the middle, each fulcrum bearing 4 is above the same side cam 3 and can be lifted up by the same side cam 3.

[0045] The point wheel roller 10 is sleeved with an upper swing arm 8 at both ends. The front end of each upper swing arm 8 is fixed on the same side wallboard through the upper swing arm fixed shaft 81 and can rotate freely around the swing arm fixed shaft 81. The rear end of each upper swing arm 8 is connected to the top end of the same side connecting rod 7 through the upper swing arm support shaft 82, and the bottom end of each connecting rod 7 is connected to the rear end of the same side lower swing arm 5 through the lower swing arm fixed shaft 131.

[0046] The left and right wallboards are provided with symmetrical round holes, and the round holes are large enough to leave a margin for the up and down movement of the point wheel roller 10. Moreover, the left and right ends of the point wheel roller 10 are respectively inserted into the same side round holes and can be lifted up and down inside the round holes.

[0047] It should be noted that the working principle of the point assembly is as follows: as shown in the figure Figure 1 、 Figure 2 The first servo motor 1 is the power source for driving the camshaft 2. The left and right two cams 3 are fixedly installed at the left and right ends of the camshaft 2. When the first servo motor 1 drives the camshaft 2 to rotate, the camshaft 2 drives each cam 3 to rotate, thereby lifting up the fulcrum bearing 4 in the middle of the same side lower swing arm 5, driving the two lower swing arms 5 to simultaneously lift up around the same side cam 3, and then driving the two upper swing arms 8 to simultaneously lift up around the same side upper swing arm fixed shaft 81 through the connecting rod 7 connected to the rear end of the lower swing arm 5 and the rear end of the upper swing arm 8, and finally driving the point wheel roller 10 to lift up inside the round hole of the same side wallboard. In this way, in the process of changing the length of section A of the lower swing arm 5, the two upper swing arms 8 continuously swing up and down around the same side upper swing arm fixed shaft 81, driving the point wheel roller 10 to continuously lift up and down inside the round hole of the same side wallboard, thereby achieving the technical effect of servo power connecting rod 7 controlling the point wheel roller 10 to point.

[0048] Especially, as shown in the figure Figure 1 、 Figure 2 、 Figure 3 The distance adjusting assembly includes eccentric wheel 6 and eccentric shaft 16 arranged between the left and right wallboards, and hand-operated worm gear reducer and gap adjusting hand wheel 12 arranged on the outer wall of the left wallboard, which are specifically introduced as follows.

[0049] The eccentric wheel shaft 16 is parallel to the cam shaft 2, and an eccentric wheel 6 is sleeved on each end of the eccentric wheel shaft 16; each eccentric wheel 6 is inserted into the front end of the same side lower swing arm 5 and can rotate freely inside the front end of the lower swing arm 5.

[0050] The left end of the eccentric wheel shaft 16 penetrates through the left wall plate and is connected with a hand-operated worm gear reducer; the hand-operated worm gear reducer is connected with the gap adjustment hand wheel 12.

[0051] It should be noted that the working principle of the distance adjustment assembly is as follows: as shown in Figure 1 , Figure 3 The hand-operated worm gear reducer is the power source of the eccentric wheel shaft 16. The left and right eccentric wheels 6 are respectively installed on the left and right ends of the eccentric wheel shaft 16 through keys. When the gap adjustment hand wheel 12 is rotated, the hand-operated worm gear reducer drives the eccentric wheel shaft 16 to rotate, and the eccentric wheel shaft 16 drives each eccentric wheel 6 to rotate inside the front end of the same side lower swing arm 5, so as to change the length of the A section of the lower swing arm 5 (i.e. the distance from the axis of the eccentric wheel shaft 16 to the axis of the fulcrum bearing 4), while the length of the B section of the lower swing arm 5 (i.e. the distance from the axis of the fulcrum bearing 4 to the axis of the lower swing arm fixing shaft 131) remains unchanged.

[0052] Based on the above technical solution, by using the lever principle, when the length of the A section of the lower swing arm 5 increases, the fulcrum position of the lower swing arm 5, i.e. the position of the fulcrum bearing 4, moves to the right, so that the lifting angle of the lower swing arm 5 becomes smaller, thereby making the lifting height of the upper swing arm 8 driven by the connecting rod 7 also smaller.

[0053] In this way, when the gap adjustment hand wheel 12 is rotated, the eccentric wheel 6 connected therewith is rotated inside the front end of the lower swing arm 5, and the rotation of the eccentric wheel 6 changes the relative position between the eccentric wheel 6 and the lower swing arm 5, thereby changing the length of the A section of the lower swing arm 5. This change further affects the movement state of the connecting rod 7. At the same time, when the movement state of the connecting rod 7 changes, the lifting height of the upper swing arm 8 connected therewith changes, thereby changing the height of the jog roller 10 and directly determining the gap size between the jog roller 10 and the fixed roller 9. Moreover, by adjusting the rotation angle of the gap adjustment hand wheel 12, the lifting height of the jog roller 10 and the gap size between the jog roller 10 and the fixed roller 9 can be accurately controlled, thereby accurately controlling the pressure size between the fixed roller 9 and the jog roller 10 to meet different production requirements. This is crucial for ensuring that the paper remains flat during the conveying process and avoids wrinkles or tears.

[0054] In addition, the hand-operated worm reducer also has a self-locking effect, when the rotation gap adjustment hand wheel 12 is stopped, the hand-operated worm reducer can keep the current state unchanged, so as to ensure that the gap of the point roller 10 and the fixed roller 9 remains unchanged when stopping. This design makes the utility model be widely applied in occasions where the gap size needs to be accurately controlled.

[0055] In other embodiments, as shown in Figure 2 、 Figure 3 Each jockey assembly also includes a tension spring 13 and plays an auxiliary reset role. The rear end of each lower swing arm 5 is connected to the top end of the same side tension spring 13 through a lower swing arm fixing shaft 131. The bottom end of each tension spring 13 is fixed to the same side wall panel, so that each eccentric wheel 6 can be tightly fitted with the same side fulcrum bearing 4.

[0056] In specific implementation, the rear end of the left and right two lower swing arms 5 is connected to the same side tension spring 13 through the lower swing arm fixing shaft 131, and under the auxiliary downward tension of the tension spring 13, the same side cam 3 and the fulcrum bearing 4 can be tightly fitted, thereby eliminating the running gap between the same side cam 3 and the fulcrum bearing 4.

[0057] In other embodiments, as shown in Figure 4 The first transmission assembly includes a second driving synchronous pulley 101, a third driven synchronous pulley 102, which are specifically introduced as follows.

[0058] The output shaft of the first servo motor 1 penetrating the right wall panel is provided with the second driving synchronous pulley 101; the right end of the cam shaft 2 penetrating the right wall panel is provided with the third driven synchronous pulley 102; the second driving synchronous pulley 101 and the third driven synchronous pulley 102 are connected through a second transmission belt.

[0059] In specific implementation, the first servo motor 1 is a power source for driving the cam shaft 2. When the first servo motor 1 is started, the second driving synchronous pulley 101 is driven to rotate, and the third driven synchronous pulley 102 is synchronously driven to rotate through the second transmission belt, thereby driving the cam shaft 2 to synchronously rotate.

[0060] In other embodiments, as shown in Figure 4 The second transmission assembly includes a first driving synchronous pulley 141, a first driven synchronous pulley 142, two synchronous belt tension pulleys 143, a second driven synchronous pulley 144, a first gear 145, a first intermediate gear 146, a second intermediate gear 147, and a second gear 148, which are specifically introduced as follows.

[0061] The output shaft of the second servo motor 14 passes through the right wall plate and is provided with a first driving pulley 141; the right end of the fixed roller 9 passes through the right wall plate and is provided with a first driven pulley 142; the right end of the fixed roller 9 passes through the right wall plate and is provided with a second gear 148.

[0062] The right wall plate is provided with a second driven pulley 144 on the outer wall and located at the rear side of the first driven pulley 142; the first driving pulley 141, the first driven pulley 142 and the second driven pulley 144 are connected by a first transmission belt.

[0063] The left side of the second driven pulley 144 is further provided with a coaxial first gear 145; the right wall plate is further provided with a first intermediate gear 146 and a second intermediate gear 147 which are engaged with each other and located at the rear side of the first gear 145 and the second gear 148 respectively; the first gear 145 is engaged with the first intermediate gear 146; the second gear 148 is engaged with the second intermediate gear 147.

[0064] In specific implementation, the second servo motor 14 is the power source for driving the fixed roller 9 and the point roller 10. When the second servo motor 14 is started, the first driving pulley 141 is driven to rotate, and the first driven pulley 142 and the second driven pulley 144 are driven to rotate synchronously by the first transmission belt, so as to drive the fixed roller 9 and the first gear 145 on the left side of the second driven pulley 144 to rotate synchronously. Moreover, the first gear 145 on the left side of the second driven pulley 144 drives the first intermediate gear 146 and the second intermediate gear 147 to rotate, and the first intermediate gear 146 and the second intermediate gear 147 here play the role of transmitting power and changing the transmission direction, and the second intermediate gear 147 drives the second gear 148 to rotate synchronously, so as to drive the point roller 10 connected with the second gear 148 to rotate synchronously. At the same time, the point roller 10 is also driven by the lower swing arm 5 inside the left and right wall plates, and can realize up and down movement. In this way, the point roller 10 can bite the paper and convey the paper in the process of rotation.

[0065] It should be noted that in the process of up and down movement of the point roller 10, the second gear 148 also moves up and down in the vertical direction, but the second gear 148 and the second intermediate gear 147 always remain engaged, and the rotation of the point roller 10 is not affected. That is to say, the second gear 148 can move up and down while rotating.

[0066] In other embodiments, the second transmission assembly further includes two synchronous belt tensioning pulleys 143; the two synchronous belt tensioning pulleys 143 are respectively located between the first driving pulley 141 and the first driven pulley 142, and between the first driving pulley 141 and the second driven pulley 144, and tension the left and right sides of the first transmission belt.

[0067] In implementation, the two synchronous belt tensioning wheels 143 tension the first transmission belt on the left and right sides, ensuring the effect of synchronous rotation of the first transmission belt on the first driven synchronous belt wheel 142 and the second driven synchronous belt wheel 144.

[0068] In other embodiments, as shown in Figure 1 The lower roller supporting circular beam 15 is connected to the middle part of the fixed roller 9 through a support block, and the fixed roller 9 can rotate freely inside the front end of the support block.

[0069] In implementation, the lower roller supporting circular beam 15 and the support block support and position the fixed roller 9. The front end of the support block is provided with an oil-containing bearing, and the fixed roller 9 can rotate freely inside the oil-containing bearing, and the oil-containing bearing reduces the rotating friction between the support block and the fixed roller 9.

[0070] In other embodiments, the first servo motor 1 and the second servo motor 14 are respectively electrically connected to the die cutting machine host and are signal linked with the die cutting machine host.

[0071] In implementation, since the control signals of the first servo motor 1 and the second servo motor 14 come from the die cutting machine host located in the front part of the paper feeding part, the actions and speeds of the first servo motor 1 and the second servo motor 14 are uniformly scheduled and controlled by the host of the die cutting machine, ensuring the coordination and consistency of the entire system. Moreover, the first servo motor 1 and the second servo motor 14 are signal linked with the die cutting machine host, and the speed and phase relationship are matched through the electrical system. This linkage mechanism accurately controls the time of paper delivery to the die cutting positioning, ensures the accurate cooperation of paper transmission and die cutting action in time and space, and improves the front and back precision and efficiency of die cutting paper.

[0072] In other embodiments, the phase time of the first servo motor 1 controlling the point wheel stick 10 to press down is: when the front end of the paper reaches the center tangent line position of the fixed roller 9 and the point roller 10, the first servo motor 1 drives the point roller 10 to press down, and the point roller 10 and the fixed roller 9 can just bite the front end of the paper, and the paper is transported under the biting and rotating of the fixed roller 9 and the point roller 10.

[0073] In specific implementation, the first servo motor 1 precisely controls the phase time of the point wheel stick 10 pressing down. This means that the first servo motor 1 can start or stop at a very accurate time point, thereby ensuring the accuracy of paper conveying. By precisely controlling the pressing time of the point wheel stick, the first servo motor 1 can control the time length of the paper feeding part and the rear paper conveying, which helps to ensure that the paper can follow the predetermined time sequence during conveying, avoiding congestion or delay. More importantly, the control of the first servo motor 1 can also ensure that the linear speed of the paper feeding part and the rear paper conveying is consistent. Linear speed is a key parameter in paper conveying, because inconsistency in linear speed can cause the paper to be pulled back and forth, thereby damaging the paper or affecting the conveying quality. By precisely controlling the paper feeding time and keeping the linear speed consistent, the first servo motor 1 can effectively avoid damage to the paper caused by pulling back and forth. This is of great significance to protecting paper quality, improving conveying efficiency and reducing equipment failure.

[0074] In summary, the second servo motor 14 controls the rotation speed of the fixed roller 9 and the jog roller 10, and the first servo motor 1 and the jog assembly control the lifting and falling of the jog roller 10, thereby realizing precise control of the jog roller 10 and smooth conveying of the paper. This design not only improves the accuracy and stability of paper conveying, but also ensures that the paper will not be damaged during conveying. Moreover, the first servo motor 1 plays a crucial role in the paper conveying system, as it precisely controls the pressing time of the point wheel stick and keeps the linear speed of the paper feeding part and the rear paper conveying consistent, thereby ensuring the stability and quality of paper conveying.

[0075] The above describes the technical solutions provided by the embodiments of the present application in detail, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only to help understand the method and core idea of the present application; meanwhile, for those skilled in the art, the technical solutions described in the above embodiments can be modified or some technical features can be replaced equivalently according to the idea of the present application; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the idea and scope of the technical solutions of the embodiments of the present application.

Claims

1. A servo feed mechanism for a die cutter paper feeder, characterized by, It includes a left wall panel and a right wall panel that stand opposite each other, a camshaft, a jog roller and a fixed roller arranged parallel to each other from bottom to top between the left and right wall panels, two jog components arranged between the left and right wall panels, a first servo motor and a second servo motor installed on the inner wall of the right wall panel, a first transmission component connecting the first servo motor and the camshaft, a second transmission component connecting the second servo motor and the fixed roller and the jog roller, and a pitch adjustment component; Each jog assembly includes a cam, a lower control arm, a pivot bearing, a connecting rod, and an upper control arm; The camshaft is fitted with cams at its left and right ends respectively; a pivot bearing is installed in the middle of each lower control arm; each pivot bearing is located above the cam on the same side and can be lifted upward by the cam on the same side. The left and right ends of the roller are respectively fitted with upper swing arms; the front end of each upper swing arm is fixed to the wall panel on the same side through the upper swing arm fixing shaft, and can rotate freely around the swing arm fixing shaft; the rear end of each upper swing arm is connected to the top end of the connecting rod on the same side through the upper swing arm support shaft; the bottom end of each connecting rod is connected to the rear end of the lower swing arm on the same side through the lower swing arm fixing shaft. The adjustable distance assembly includes an offset wheel shaft, two eccentric wheels, a hand-cranked worm gear reducer, and a clearance adjusting handwheel; Each eccentric wheel is inserted into the front end of the lower control arm on the same side and can rotate freely inside the front end of the lower control arm; the left and right ends of the eccentric wheel shaft are respectively connected to the eccentric wheels on the same side; The hand-cranked worm gear reducer and the clearance adjusting handwheel are installed on the outer wall of the left wall panel; the clearance adjusting handwheel is connected to the hand-cranked worm gear reducer; the hand-cranked worm gear reducer is connected to the eccentric wheel shaft passing through the left end of the left wall panel; Symmetrical circular holes are provided on the left and right wall panels; the left and right ends of the jog roller are respectively inserted into the circular holes on the same side, and can be raised and lowered inside the circular holes under the drive of the jog component, and can also be adjusted in height under the drive of the pitch adjustment component.

2. A servo feed mechanism for a die cutter paper feeder according to claim 1, characterized in that, Each jog component also includes a tension spring; The rear end of each lower control arm is connected to the top of the tension spring on the same side via a lower control arm fixed shaft; the bottom end of each tension spring is fixed to the wall plate on the same side, so that each eccentric wheel can fit tightly with the pivot bearing on the same side.

3. The servo feed mechanism of a die cutting machine paper feeder according to claim 1, characterized in that, The first transmission assembly includes a second driving synchronous pulley and a third driven synchronous pulley; A second active synchronous pulley is installed on the output shaft of the first servo motor passing through the right wall panel; a third driven synchronous pulley is installed on the right end of the camshaft passing through the right wall panel; and the second active synchronous pulley and the third driven synchronous pulley are connected by a conveyor belt.

4. The servo feed mechanism of a die cutting machine paper feeder according to claim 1, characterized in that, The second transmission assembly includes a first driving synchronous pulley, a first driven synchronous pulley, two synchronous belt tensioners, a second driven synchronous pulley, a first gear, a first intermediate wheel, a second intermediate wheel, and a second gear; The second servo motor has a first active synchronous pulley mounted on its output shaft passing through the right wall panel; the fixed roller has a first driven synchronous pulley mounted on its right end passing through the right wall panel; and the fixed roller has a second gear mounted on its right end passing through the right wall panel. A second driven synchronous pulley is installed on the outer wall of the right wall panel and is located behind the first driven synchronous pulley; and the first driving synchronous pulley, the first driven synchronous pulley and the second driven synchronous pulley are connected by a first transmission belt; The left side of the second driven synchronous pulley is also provided with a coaxial first gear; the right wall plate is also provided with a first intermediate gear and a second intermediate gear which are engaged with each other and are located at the rear side of the first gear and the second gear respectively; and the first gear is engaged with the first intermediate gear and the second gear is engaged with the second intermediate gear.

5. A servo feed mechanism for a die cutter paper feeder according to claim 4, characterized in that, The second transmission assembly further comprises two synchronous belt tensioning wheels. The two synchronous belt tensioning wheels are respectively located between the first driving synchronous pulley and the first driven synchronous pulley and between the first driving synchronous pulley and the second driven synchronous pulley and tension the first transmission belt on the left and right sides.

6. A servo feed mechanism for a die cutter paper feeder as defined in claim 1, wherein A lower roller supporting circular beam parallel to the fixed roller is also arranged between the left and right wall plates. The middle part of the lower roller supporting circular beam and the middle part of the fixed roller are connected through a supporting block, and the fixed roller can rotate freely inside the front end of the supporting block.

7. A servo feed mechanism for a die cutter paper feeder according to any one of claims 1-6, characterized in that, The first servo motor and the second servo motor are respectively electrically connected to the die cutting machine host and are signal linked with the die cutting machine host.

8. A servo feed mechanism for a die cutter paper feeder according to any one of claims 1-6, characterized in that, The phase time of the first servo motor controlling the point wheel stick to press down is that when the front end of the paper reaches the position of the fixed roller and the point roller center tangent line, the first servo motor drives the point roller to press down, and the point roller and the fixed roller can just bite the front end of the paper.

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