A cam drive structure

Abstract

The utility model relates to a die -cutting machine technical field, concretely relates to a cam drive structure, including the second support frame of rotation installation between two vertical boards, the middle part articulates of second hinge pin on vertical board and corresponding second locating plate, third hinge plate, the bottom of second locating plate is connected with vertical board through second spring, and third hinge plate passes through second hinge plate and second support frame, and the both ends of second support frame are hinged with the first end of first hinge plate through first connecting rod, and first connecting rod is sleeved with first spring, the bottom of second support frame still is installed with the slewing shaft, and a plurality of tooth opening subassemblies are installed on the slewing shaft, and the slewing shaft, second locating plate, third hinge plate, second support frame are hinged through the corresponding cam drive on drive shaft respectively, the utility model effectively solved the technical problem that the material conveying positioning precision of existing die -cutting machine is insufficient, and the adaptability is poor and the material flatness is difficult to guarantee.

Description

Technical Field

[0001] This utility model relates to the field of die-cutting machine technology, specifically to a cam drive structure. Background Technology

[0002] In the field of die-cutting machine technology, the transmission and positioning components between the feeding assembly and the die-cutting assembly are crucial for ensuring the accuracy and efficiency of die-cutting. Their main functions are to achieve stable material delivery to the gripper bar, precise positioning, and to ensure the material remains flat before entering the die-cutting process. In existing die-cutting machines, this stage typically uses a traditional drive structure to feed and position the material to the gripper bar. However, the interaction between these drive components is prone to delays or unstable resets, resulting in significant positioning deviations when the material is delivered to the gripper bar, which in turn affects the dimensional accuracy of subsequent die-cutting processes. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a cam-driven structure, specifically implemented through the following technical solution: A cam-driven structure includes a second support frame whose two ends are rotatably connected to corresponding first connecting blocks. Two first connecting blocks are respectively mounted on a first upright plate and a second upright plate. A second hinge shaft is fixedly mounted on the side of the first and second upright plates that are close to each other. Each second hinge shaft is hinged to the middle of a corresponding second positioning plate and a third hinge plate. The bottom of the second positioning plate is connected to the first upright plate via a second spring. The top of the third hinge plate is hinged to the end of the second support frame via the second hinge plate. Both ends of the second support frame are also hinged to the first ends of corresponding first connecting rods. The second end of the connecting rod passes through the limiting block and is hinged to the first end of the first hinge plate. The two limiting blocks are respectively fixed to the first and second upright plates by bolts. A first spring is sleeved on the first connecting rod. The top of the first spring abuts against the retaining ring in the middle of the first connecting rod, and the bottom abuts against the limiting block. A rotatable rotary shaft is also installed at the bottom of the second support frame. Several threaded components are fixedly installed on the rotary shaft in a linear array. The rotary shaft, the second positioning plate, the third hinge plate, and the second support frame are respectively driven by corresponding cams on the drive shaft. The drive shaft is rotatably installed between the first and second upright plates.

[0004] The opening assembly includes a pressure block, the first end of which is detachably mounted on a rotating shaft, and a pressure rod is fixedly mounted on the second end of the pressure block. A pressure roller is mounted on the top of the pressure rod.

[0005] A first push wheel is installed on the side of the second positioning plate away from the second hinge axis in the middle. A first roller is installed on the bottom of the third hinge plate. A second roller is installed on at least one of the pressure blocks. A first cam, a second cam, and a third cam are installed on the drive shaft. The third cam is in rolling engagement with the second roller. The second cam is in rolling engagement with the first roller. The first cam is in rolling engagement with the first push wheel.

[0006] The second support frame has a sliding block installed in its groove, and a number of positioning blocks are installed on the top of the sliding block away from the second support frame.

[0007] A lead screw is rotatably mounted on the second support frame; the first end of the lead screw is threadedly engaged with the slide block, and the second end is equipped with a second gear. The second gear meshes with a first gear rotatably mounted on the second support frame. The axle of the first gear is connected to the first transmission rod and the second transmission rod in sequence through a coupling. The second end of the second transmission rod passes through the first vertical plate and is fixedly mounted with a handwheel.

[0008] It also includes a paper pressing shaft rotatably mounted between two second connecting blocks, on which several connecting plates are mounted in a linear array, and the ends of the connecting plates away from the paper pressing shaft are detachably connected to the pressing plate; a drive plate is mounted on the paper pressing shaft, and the top of the drive plate is pushed by a paper pressing cam, which is fixedly mounted on the sprocket shaft of the gripper assembly.

[0009] It also includes a second support rod installed between the first and second uprights, and a pressure strip is installed on the second support rod.

[0010] The second support rod has an installation groove on one side, and several bolt sliders are slidably installed in the installation groove. Each bolt slider is sleeved with the first end of the corresponding pressure strip and is fastened by a nut.

[0011] The technical solution of this utility model has the following advantages: The cam drive structure provided by this utility model serves as a key transmission and positioning component between the paper feeding assembly and the die-cutting assembly of a die-cutting machine. Through a scientific and reasonable overall structural design and the coordinated cooperation of various technical features, it effectively solves the technical problems of insufficient material conveying positioning accuracy, poor adaptability, and difficulty in ensuring material flatness in existing die-cutting machines. Overall, it achieves the technical effects of precise material conveying positioning, diversified adaptability to specifications, and optimized material state before die-cutting.

[0012] The structure relies on the first and second upright plates to build a stable support frame. Through the rolling cooperation of the first, second, and third cams on the drive shaft with their corresponding components, a multi-component linkage cam drive mechanism is formed. Among them, the first cam cooperates with the second positioning plate, the second cam cooperates with the third hinge plate, and the third cam cooperates with the toothed assembly. This can precisely control the swing of the second positioning plate, the rotation of the third hinge plate, and the rotation of the rotary shaft. With the reset action of the second positioning plate by the second spring and the reset action of the first connecting rod by the first spring, the precise connection and stable reset of the actions of each moving part are achieved, providing a reliable power transmission foundation for material positioning and toothed feeding.

[0013] The second support frame is hinged to the first connecting block at both ends for rotational adjustment. A linear array of tooth-opening components is mounted on the bottom rotating shaft. The pressure block of the tooth-opening component is detachably fixed to the rotating shaft via a clamping part. The pressure roller at the top of the pressure rod rotates with the rotating shaft to squeeze the toothed plate assembly, opening it and facilitating material feeding to the toothed plate. After the pressure roller returns to its original position, the toothed plate reliably clamps the material. The slide block in the second support frame's groove is adjusted via a lead screw. The lead screw is connected to the second transmission rod via a second gear, a first gear, and a first transmission rod. Turning the handwheel moves the slide block along the width of the second support frame, adjusting the position of the positioning block on the slide block. This not only allows for initial positioning by blocking the toothed plate with the positioning block but also adapts to the positioning requirements of materials of different specifications, ensuring consistent material feeding positions and improving the stability and positioning accuracy of the toothed plate feeding.

[0014] The paper pressing assembly and positioning assembly in the structure work together. The paper pressing shaft is detachably connected to the pressure plate via a connecting plate. The drive plate on the paper pressing shaft and the paper pressing cam on the sprocket shaft roll together. When the material is conveyed to the paper pressing assembly, the pressure plate flattens the material under gravity. When the gripper moves to the clamping position, the paper pressing cam squeezes the drive plate, causing the paper pressing shaft to rotate and lift the pressure plate without affecting the material entering the gripper. An installation groove is opened on the second support rod between the first and second vertical plates. The sliding bolt slider in the groove is fixed to the pressure strip. The position of the pressure strip can be adjusted according to the width of the material, so that the pressure strip and the positioning assembly cooperate to squeeze the material. The paper pressing wheel on the wheel seat further restricts the posture of the material, ensuring that the material remains flat throughout the entire conveying process. This avoids the material protruding and affecting the subsequent die-cutting quality, further improving the processing accuracy and product qualification rate of the die-cutting machine.

[0015] In addition, the detachable connection design and adjustable structure of each component not only facilitate the disassembly, maintenance and replacement of components, but also flexibly adapt to the processing requirements of materials of different specifications, enhancing the versatility and practicality of the structure, and improving the overall operational stability, processing adaptability and production efficiency of the die-cutting machine. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 A schematic diagram of the installation structure for the positioning components; Figure 3 This is a schematic diagram of the overall positioning components; Figure 4 This is a side view of the positioning component; Figure 5 This is a bottom view diagram of the positioning component; Figure 6 This is a schematic diagram showing the cooperation relationship between the positioning component and the paper pressing component; Figure 7 This is a schematic diagram of the paper pressing assembly.

[0018] In the diagram, 1 - positioning component; 11-First support frame; 12-Positioning module, 121-Second support frame, 122-First connecting block, 123-First connecting rod, 124-First spring, 125-Limiting block, 126-First hinge plate, 127-First hinge shaft, 128-First gear, 129-First transmission rod, 1210-Second transmission rod, 1211-Locking bolt, 1212-Locking sleeve, 1213-Handwheel, 1214-Second hinge shaft, 1215 - Second positioning plate, 1216- First spring seat, 1217- Second spring, 1218- Hinge ear, 1219- Second hinge plate, 1220- Third hinge plate, 1221- First roller, 1222- Rotary shaft, 1223- Pressure block, 1224- Pressure roller, 1225- Lead screw, 1226- Second roller, 1227- Slide, 1228- Positioning block, 1229- Third spring, 130- Guide rod; 13-First support rod; 14-Oil receiving tank; 15-Drive shaft, 151-First cam, 152-Second cam, 153-Third cam; 2-Paper pressing assembly; 21-Second support rod, 211-Mounting groove, 212-Pressure strip, 213-Bolt slider; 22-Pressure plate, 23-Paper pressing cam, 24-Second connecting block, 25-Drive plate, 26-Wheel seat, 27-Connecting plate, 28-Paper pressing shaft, 29-Paper pressing wheel; 100 - First upright plate, 200 - Second upright plate, 300 - Sprocket shaft. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] As attached Figure 1 and attached Figure 2 As shown, this utility model provides a cam-driven structure, which is installed between the first vertical plate 100 and the second vertical plate 200 of a die-cutting machine, and located between the paper feeding assembly and the die-cutting assembly. The cam-driven structure includes a positioning component 1 and a paper pressing component 2, wherein the paper pressing component 2 is located above the positioning component 1.

[0024] The paper pressing assembly 2 is located between the positioning assembly 1 and the die-cutting assembly, ensuring that the material can enter the die-cutting assembly smoothly. The die-cutting assembly is existing technology and will not be described in detail.

[0025] The structure of positioning component 1 is shown in the attached figure. Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 5 As shown, it includes a first support frame 11, a positioning module 12, a first support rod 13, and an oil receiving groove 14 installed between the first upright plate 100 and the second upright plate 200.

[0026] The first support frame 11 is located on the side of the positioning module 12 near the die-cutting assembly, and the first support rod 13 is located below the positioning module 12; the top of the first support rod 13 is bolted with an oil receiving groove 14; the oil receiving groove 14 is used to receive the lubricating oil falling from the positioning module 12.

[0027] The positioning module 12 includes two first connecting blocks 122 that are respectively bolted to the first upright plate 100 and the second upright plate 200. A rotatable second support frame 121 is installed between the two first connecting blocks 122. Specifically, the two ends of the second support frame 121 that are away from the first support frame 11 are respectively hinged to the corresponding first connecting blocks 122.

[0028] A second hinge shaft 1214 is fixedly installed on the side of the first upright plate 100 and the second upright plate 200 that are close to each other. The second hinge shaft 1214 is located between the first connecting block 122 and the first support frame 11.

[0029] Each second hinge axis 1214 is hinged to the middle of the corresponding second positioning plate 1215 and third hinge plate 1220; wherein the third hinge plate 1220 is located on the side of the second positioning plate 1215 away from the first upright plate 100.

[0030] The bottom of the second positioning plate 1215 is connected to the first spring seat 1216 mounted on the first upright plate 100 via the second spring 1217. The first spring seat 1216 is located on the side of the second hinge shaft 1214 away from the first connecting block 122.

[0031] The second spring 1217 is used for resetting the second positioning plate 1215.

[0032] A first push wheel is installed on the side of the second positioning plate 1215 away from the second hinge shaft 1214.

[0033] The third hinge plate 1220 is C-shaped in general. The bottom of the third hinge plate 1220 is equipped with a first roller 1221, and the top of the first hinge plate 1219 is hinged to the bottom of the second hinge plate 1219. The top of the second hinge plate 1219 is hinged to the end of the second support frame 121.

[0034] The second support frame 121 is also hinged at both ends to corresponding hinge ears 1218, which are fixedly installed at the first end of the first connecting rod 123. The second end of the first connecting rod 123 passes through the limiting block 125 and is hinged to the first end of the first hinge plate 126. The second ends of the two first hinge plates 126 are respectively hinged to the first hinge shaft 127 fixed on the first upright plate 100 and the second upright plate 200. The two limiting blocks 125 are respectively fixed to the first upright plate 100 and the second upright plate 200 by bolts and are located between the second support frame 121 and the first hinge plate 126.

[0035] The second ends of the two first hinge plates 126 are respectively hinged to the first vertical plate 100 and the second vertical plate 200.

[0036] The limiting block 125 is fixed to the first vertical plate 100 and the second vertical plate 200 by bolts.

[0037] A retaining ring is fixedly installed in the middle of the first connecting rod 123, and the retaining ring is located between the limiting block 125 and the hinge ear 1218.

[0038] A first spring 124 is sleeved on the first connecting rod 123. The top of the first spring 124 abuts against the retaining ring, and the bottom abuts against the limiting block 125. The first spring 124 is used to reset the first support frame 11.

[0039] As attached Figure 4 and attached Figure 5 As shown, a rotatable rotary shaft 1222 is also installed at the bottom of the second support frame 121. The length direction of the rotary shaft 1222 is the same as the length direction of the second support frame 121, that is, the two ends of the rotary shaft 1222 are respectively rotatably engaged with the two ends of the bottom of the second support frame 121.

[0040] Several thread-cutting components are fixedly mounted on the rotary shaft 1222 in a linear array. Each thread-cutting component includes a pressure block 1223. The first end of the pressure block 1223 is provided with a clamping part. The clamping part is sleeved on the rotary shaft 1222 and locked by a locking bolt, thereby firmly clamping the pressure block 1223 on the rotary shaft 1222.

[0041] A vertical pressure rod is fixedly installed at the second end of the pressure block 1223, that is, the end away from the clamping part. A rotatable pressure roller 1224 is installed on the top of the pressure rod. When the rotary shaft 1222 rotates, the pressure roller 1224 can be made higher than the second support frame 121 and squeeze the corresponding gripper assembly on the gripper bar, causing the gripper assembly to open. After the pressure roller 1224 returns to its original position, the gripper assembly clamps the material conveyed by the paper feeding assembly.

[0042] As attached Figure 5As shown, at least one of the pressure blocks 1223 is equipped with a second roller 1226; in this embodiment, two pressure blocks 1223 are equipped with second rollers 1226.

[0043] All the rollers and the first push wheel in the positioning component 1 are in contact with the cam drive component, and the corresponding parts can be driven to rotate by the cam drive component.

[0044] As attached Figure 4 and attached Figure 5 As shown, a slide block 1227 is also slidably mounted in the groove of the second support frame 121, and the slide block 1227 is located on the side close to the first support frame 11. In the entire die-cutting machine, the first support frame 11 is located between the second support frame 121 and the die-cutting assembly.

[0045] The top of the slide 1227 is away from the side of the second support frame 121, and several positioning blocks 1228 are bolted on it. The tops of these positioning blocks 1228 are higher than the top of the second support frame 121.

[0046] The top of the second support frame 121 is bolted with a support plate, and the support plate has clearance grooves that correspond one-to-one with the pressure roller 1224 and the positioning block 1228.

[0047] As attached Figure 5 As shown, two lead screws 1225 are rotatably mounted on the second support frame 121. The first end of the lead screw 1225, i.e., the threaded end, is threaded into the slide block 1227; the second end of the lead screw 1225 is equipped with a second gear. The projections of the axis of the lead screw 1225 and the axis of the rotary shaft 1222 onto the horizontal plane are perpendicular to each other, and both the rotary shaft 1222 and the lead screw 1225 are horizontally arranged.

[0048] The second gear meshes with the first gear 128, which is rotatably mounted on the second support frame 121. The projections of the axis of the second gear and the axis of the first gear 128 onto the horizontal plane are perpendicular to each other.

[0049] The axle of the first gear 128 is connected to the first end of the first transmission rod 129 via a first cross coupling. The second end of the first transmission rod 129 is connected to the first end of the second transmission rod 1210 via a second cross coupling. The second end of the second transmission rod 1210 passes through the first vertical plate 100 and is fixedly mounted with a handwheel 1213. The second transmission rod 1210 can be locked by a locking component mounted on the first vertical plate 100.

[0050] The locking component includes a guide sleeve bolted to the outer wall of the first upright plate 100. The second end of the second transmission rod 1210 passes through the guide sleeve. A locking sleeve 1212 is fixedly installed at the end of the guide sleeve away from the first upright plate 100. Two locking plates clamping the second transmission rod 1210 are installed inside the locking sleeve 1212. One locking plate is fixed by a fixing bolt on the locking sleeve 1212, and the other locking plate is limited by a locking bolt 1211 installed on the locking sleeve 1212. When it is necessary to lock the second transmission rod 1210, the two locking plates can be used to lock the second transmission rod 1210 by rotating the locking bolt 1211.

[0051] The structure of the aforementioned cam drive assembly is shown in the attached figure. Figure 6 As shown, it includes a drive shaft 15, the two ends of which are rotatably engaged with the first vertical plate 100 and the second vertical plate 200 via bearings, respectively.

[0052] The drive shaft 15 is keyed with a first cam 151, a second cam 152, and a third cam 153; there are two third cams 153, each located between two second cams 152; and each of the two second cams 152 is located between two first cams 151.

[0053] The third cam 153 is in rolling engagement with the second roller 1226; the second cam 152 is in rolling engagement with the first roller 1221; and the first cam 151 is in rolling engagement with the first push wheel.

[0054] When the gripper bar moves to the positioning assembly 1, under the elastic force of the first spring 124, the side of the second support frame 121 near the first support frame 11 will be lifted, and the positioning block 1228 will block the gripper bar. The third cam 153 pushes the rotary shaft 1222 to rotate through the second roller 1226, and then the pressure roller 1224 pushes the gripper plate assembly on the gripper bar to open. At this time, the material is transported to this position by the paper feeding assembly. As the drive shaft 15 continues to rotate, the second cam 152 pushes the first roller 1221, the third hinge plate 1220 rotates, and drives the entire second support frame 121 to fall. At the same time, the protruding part of the third cam 153 moves away from the second roller 1226, and the pressure roller 1224 returns to its original position under the action of gravity. At this time, the gripper bar clamps the material and moves towards the first support frame 11.

[0055] When the tooth bar moves to the side of the second positioning plate 1215 near the first support frame 11, the first cam 151 presses against the first push wheel, and the top of the second positioning plate 1215 lifts up, abutting against both ends of the tooth bar, thus completing the positioning of the tooth bar. Then, the second positioning plate 1215 returns to its original position under the action of gravity and the second spring 1217.

[0056] The drive shaft 15 is powered by the die-cutting assembly.

[0057] As attached Figure 5As shown, a third spring 1229 is installed between the slide 1227 and the second support frame 121. A guide rod 130 is installed on the second support frame 121 to guide the third spring 1229. The length of the guide rod 130 is less than the length of the third spring 1229. The third spring 1229 can make the slide 1227 more stable.

[0058] The structure of the aforementioned paper pressing assembly 2 is shown in the attached figure. Figure 7 As shown, it includes a second support rod 21 and two second connecting blocks 24 that are bolted to the die-cutting assembly.

[0059] The second support rod 21 is installed between the first upright plate 100 and the second upright plate 200 by bolts.

[0060] The second support rod 21 has a mounting groove 211 on one side, and the length of the mounting groove 211 is the same as the length of the second support rod 21.

[0061] Several bolt sliders 213 are slidably installed in the mounting groove 211. Each bolt slider 213 is sleeved with the first end of the corresponding pressure strip 212 and fastened by a nut. The second end of the pressure strip 212 extends toward the direction of the paper pressing shaft 28.

[0062] The second end of the pressure strip 212 is located above the pallet. When the material reaches the pallet, it will be squeezed by the pallet and the pressure strip 212 to ensure that the material can be die-cut in a flat state.

[0063] A rotatable paper-pressing shaft 28 is installed between the two second connecting blocks 24. A second support rod 21 is located between the paper-pressing shaft 28 and the positioning assembly 1.

[0064] Several connecting plates 27 are mounted in a linear array on the paper pressing shaft 28. Specifically, the connecting plate 27 includes an L-shaped plate body and a clamp that cooperates with the plate body. The top of the vertical part of the plate body is provided with a first arc-shaped groove that matches the paper pressing shaft 28, and the clamp is provided with a second arc-shaped groove that matches the paper pressing shaft 28. The first arc-shaped groove and the second arc-shaped groove respectively encircle the paper pressing shaft 28 from both sides. Then, the clamp is locked to the top of the vertical part of the plate body by bolts.

[0065] The horizontal portion of the plate extends toward the far-pressing paper shaft 28 and is connected to the pressure plate 22 by bolts.

[0066] It also includes a drive plate 25, the bottom of which is a clamping part. This clamping part is sleeved on the paper pressing shaft 28 and locked with bolts to complete the fixation of the drive plate 25 and the paper pressing shaft 28. That is, the connection method between the drive plate 25 and the paper pressing shaft 28 is the same as the connection method between the pressure block 1223 and the rotary shaft 1222.

[0067] A second push wheel is mounted on the top of the drive plate 25, which rolls in engagement with the paper pressing cam 23. The paper pressing cam 23 is fixedly mounted on the sprocket shaft 300 of the gripper assembly, and the two ends of the sprocket shaft 300 are respectively rotatably engaged with the first vertical plate 100 and the second vertical plate 200.

[0068] One end of the sprocket shaft 300 passes through the second vertical plate 200 and is connected to the output end of the cam divider via a coupling; the cam divider is also driven by the die-cutting assembly. The toothed bar assembly is also existing technology and will not be described in detail.

[0069] The material is pushed to the paper pressing assembly 2 by the paper feeding assembly. Due to gravity, the pressing plate 22 presses on the material and flattens it. As the gripper assembly moves the gripper to the position where the material is to be clamped, the paper pressing cam 23 squeezes the second push wheel. The drive plate 25 drives the paper pressing shaft 28 to rotate, the pressing plate 22 is lifted, and the end of the material enters the gripper and is clamped by the gripper.

[0070] The structure of the gripper assembly and the paper feed assembly is existing technology and will not be described in detail here.

[0071] It also includes several wheel seats 26. In this embodiment, the number of wheel seats 26 is three.

[0072] The first end of the wheel seat 26 is fixed to the fixed mold of the die-cutting assembly by bolts, the middle part is rotatably engaged with the paper pressing shaft 28, and the second end is equipped with a paper pressing wheel 29. The paper pressing wheel 29 is located between the pressure plate 22 and the paper pressing shaft 28, and the paper pressing wheel 29 is also located between the first support frame 11 and the second support frame 121 to maintain the posture and position of the material.

[0073] The positioning component 1 is linked with the cam drive component through the second support frame 121, the second spring 1217, and the positioning block 1228 and the toothed component to achieve precise positioning and stable feeding of the toothed bar during the material conveying process; at the same time, the slide 1227 can be adjusted along the width direction of the second support frame 121 to meet the needs of precise positioning of the material.

[0074] The paper pressing assembly 2 utilizes the cooperation of the paper pressing shaft 28, the paper pressing wheel 29 and the paper pressing cam 23 to keep the material flat during the material conveying process, avoiding the impact of material wrinkles on the die-cutting quality. Furthermore, the pressing strip 212 can be adjusted in position via the bolt slider 213 to further adapt to the flattening requirements of materials of different widths.

[0075] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A cam-driven structure, characterized in that, The system includes a second support frame (121) whose two ends are rotatably connected to corresponding first connecting blocks (122). Two first connecting blocks (122) are respectively mounted on a first upright plate (100) and a second upright plate (200). A second hinge shaft (1214) is fixedly mounted on the side of the first upright plate (100) and the second upright plate (200) that is close to each other. Each second hinge shaft (1214) is hinged to the middle of a corresponding second positioning plate (1215) and a third hinge plate (1220). The bottom of the second positioning plate (1215) is connected to the first upright plate (100) via a second spring (1217). The top of the third hinge plate (1220) is hinged to the end of the second support frame (121) via a second hinge plate (1219). Both ends of the second support frame (121) are also hinged to the first end of a corresponding first connecting rod (123). The second end of the first connecting rod (123)... The end of the limiting block (125) is hinged to the first end of the first hinge plate (126). The two limiting blocks (125) are respectively fixed to the first upright plate (100) and the second upright plate (200) by bolts. The first connecting rod (123) is fitted with a first spring (124). The top of the first spring (124) abuts against the retaining ring in the middle of the first connecting rod (123), and the bottom abuts against the limiting block (125). The bottom of the second support frame (121) is also equipped with a rotatable rotary shaft (1222). Several threaded components are fixedly installed on the rotary shaft (1222) in a linear array. The rotary shaft (1222), the second positioning plate (1215), the third hinge plate (1220), and the second support frame (121) are respectively driven by the corresponding cams on the drive shaft (15). The drive shaft (15) is rotatably installed between the first upright plate (100) and the second upright plate (200).

2. The cam drive structure according to claim 1, characterized in that, The opening assembly includes a pressure block (1223), the first end of which is detachably mounted on a rotating shaft (1222), and the second end of which is fixedly mounted with a pressure rod, and the top of which is mounted with a pressure wheel (1224).

3. The cam drive structure according to claim 2, characterized in that, A first push wheel is installed on the side of the second positioning plate (1215) away from the second hinge shaft (1214), a first roller (1221) is installed on the bottom of the third hinge plate (1220), a second roller (1226) is installed on at least one of the pressure blocks (1223), and a first cam (151), a second cam (152), and a third cam (153) are installed on the drive shaft (15); the third cam (153) is in rolling engagement with the second roller (1226); the second cam (152) is in rolling engagement with the first roller (1221); and the first cam (151) is in rolling engagement with the first push wheel.

4. The cam drive structure according to claim 1, characterized in that, The second support frame (121) has a sliding slide (1227) installed in the groove. Several positioning blocks (1228) are installed on the top side of the slide (1227) away from the second support frame (121).

5. The cam drive structure according to claim 4, characterized in that, A lead screw (1225) is rotatably mounted on the second support frame (121); the first end of the lead screw (1225) is threadedly engaged with the slide (1227), and the second end is equipped with a second gear. The second gear meshes with a first gear (128) rotatably mounted on the second support frame (121). The axle of the first gear (128) is connected in sequence to the first transmission rod (129) and the second transmission rod (1210) through a coupling. The second end of the second transmission rod (1210) passes through the first vertical plate (100) and is fixedly mounted with a handwheel (1213).

6. The cam drive structure according to claim 1, characterized in that, It also includes a paper pressing shaft (28) rotatably mounted between two second connecting blocks (24), on which a plurality of connecting plates (27) are mounted in a linear array, and the ends of the plurality of connecting plates (27) away from the paper pressing shaft (28) are detachably connected to the pressing plate (22); a drive plate (25) is mounted on the paper pressing shaft (28), and the top of the drive plate (25) is pushed by a paper pressing cam (23), which is fixedly mounted on the sprocket shaft (300) of the toothed assembly.

7. The cam drive structure according to claim 6, characterized in that, It also includes a second support rod (21) installed between the first upright plate (100) and the second upright plate (200), and a pressure strip (212) is installed on the second support rod (21).

8. The cam drive structure according to claim 7, characterized in that, The second support rod (21) has an installation groove (211) on one side. Several bolt sliders (213) are slidably installed in the installation groove (211). Each bolt slider (213) is sleeved with the first end of the corresponding pressure strip (212) and fastened by a nut.

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