Cutter roll pressing force adjusting device

Abstract

The utility model relates to the field of label die cutting, concretely relates to a cutting plate roller pressing force adjusting device, including two roller frames, rotatably connecting the bearing roller between two roller frames, the sliding block is vertically slidably connected on two roller frames, the vertical screw rod is rotatably arranged on two roller frames, two screw rods are respectively and two sliding blocks are threadedly connected, the cutting plate roller is rotatably connected between two sliding blocks, the cutting plate roller is located above the bearing roller, the chain wheel is coaxially fixedly connected on two screw rods, and the chain is connected between two chain wheels, one of roller frames is installed with the lift motor, the output shaft of lift motor is coaxially fixedly connected with the driving gear, the screw rod on this roller frame is coaxially fixedly connected with the driven gear, the driving gear and the driven gear are engaged, and the diameter of driving gear is less than the diameter of driven gear. Through the scheme, the rotation of the screw rod needs manual adjustment, the operation is troublesome, and the two hands adjust two screw rods, and the problem of out-of-sync adjustment can appear.

Description

Technical Field

[0001] This utility model relates to the field of label die-cutting, specifically to a die roller clamping force adjustment device. Background Technology

[0002] Flexographic printing presses are equipped with die-cutting rollers, which consist of a circular die-cutting magnetic roller and a die plate. The die plate is attached to the circular die-cutting magnetic roller. After the label is printed, it passes through the die-cutting roller, which then die-cuts the label.

[0003] The flexographic printing press is equipped with a roller frame, on which the die-cutting roller is mounted. A support roller is also mounted on the roller frame, with the die-cutting roller positioned above it. Labels pass between the support roller and the die-cutting roller, which performs the die-cutting. The roller frame has two pressure adjustment mechanisms, each consisting of a lead screw and a rotating handle. The rotating handle and lead screw are coaxially fixed. Both lead screws are threaded to the ends of the die-cutting roller. Manually rotating the two lead screws moves the die-cutting roller, thus adjusting the die-cutting pressure on the label.

[0004] However, the current die-cutting pressure adjustment method has the following disadvantages: 1. The rotation of the lead screw needs to be manually adjusted, which is cumbersome. Furthermore, adjusting two lead screws with two hands can lead to asynchronous adjustments. 2. Each time the flexographic printing press prints different types of labels, different types of labels need to be die-cut. Since different types of labels have different patterns, different die plates need to be changed on the die-cutting roller each time. After changing the die plate, the die-cutting pressure needs to be manually adjusted, and the die-cutting effect needs to be visually observed to judge the effectiveness of the die-cutting pressure adjustment until it is adjusted to the appropriate level. This means that the die-cutting pressure needs to be repeatedly adjusted every time the die plate is changed, making die-cutting pressure adjustment cumbersome. Utility Model Content

[0005] The present invention aims to provide a cutting roller clamping force adjustment device to solve the two technical problems mentioned in the background art.

[0006] To address the problem that "the rotation of the lead screw requires manual adjustment, which is cumbersome, and the adjustment of the two lead screws by two hands will result in asynchronous adjustment," this utility model adopts the following technical solution: a blade roller clamping force adjustment device, comprising two roller frames, with a transverse bearing roller rotatably connected between the two roller frames. Each roller frame has a vertically slidable block, and each roller frame has a vertically mounted lead screw. The two lead screws are threadedly connected to the two sliding blocks, and a blade roller is rotatably connected between the two sliding blocks. The blade roller is located above the bearing roller. Each lead screw has a sprocket coaxially fixedly connected to it, and a chain connects the two sprockets. A lifting motor is mounted on one of the roller frames, and a drive gear is coaxially fixedly connected to the output shaft of the lifting motor. A driven gear is coaxially fixedly connected to the lead screw on this roller frame. The drive gear and the driven gear mesh, and the diameter of the drive gear is smaller than the diameter of the driven gear.

[0007] The principle and advantages of this scheme are as follows: the lifting motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives one of the lead screws to rotate. Since both lead screws are coaxially fixedly connected to sprockets, and a chain connects the two sprockets, the two lead screws are linked together through the sprocket and chain mechanism, thus realizing the simultaneous driving of the two lead screws. In this way, the two lead screws rotate at the same time, and the rotation of the two lead screws respectively drives the two sliding blocks to move vertically on the roller frame, realizing the vertical movement of the cutting roller, and thus realizing the pressure adjustment of the cutting roller.

[0008] In summary, with this solution, the rotation of the lead screw is no longer adjusted manually, but is driven by a lifting motor. The operation is simple and convenient, and the simultaneous rotation of the two lead screws ensures that the vertical movement of the two sliding blocks is synchronized. The two sliding blocks move to the same degree, eliminating the problem of asynchronous adjustment and improving the quality of pressure regulation.

[0009] To address the problem that "after changing the die-cutting plate, it is necessary to manually adjust the die-cutting pressure and visually observe the effect of the adjustment until the die-cutting pressure is adjusted to a suitable level, so that the die-cutting pressure needs to be repeatedly adjusted every time the die-cutting plate is changed, which is troublesome," this utility model adopts the following technical solution: a die-cutting roller clamping force adjustment device, including two roller frames, with a transverse bearing roller rotatably connected between the two roller frames, and a sliding block slidably connected vertically to each of the two roller frames. A vertical lead screw is rotatably mounted on each of the two roller frames, and the two lead screws are threadedly connected to the two sliding blocks respectively. A die-cutting roller is rotatably connected between the two sliding blocks and is located above the bearing roller. It also includes a lifting motor for driving the lead screw rotation, a pressure sensor on at least one roller frame, a pressure block fixedly connected to the sliding block, the pressure block being located above the pressure sensor, and a compression spring between the pressure block and the pressure sensor; a controller is electrically connected between the lifting motor and the pressure sensor.

[0010] The principle and advantages of this solution are as follows: The lifting motor drives the lead screw to rotate. When the die-cutting roller pressure is adjusted after the die is replaced, the lifting motor drives the lead screw to rotate automatically. The lead screw drives the sliding block to move vertically downward on the roller frame. The sliding block drives the die-cutting roller to move vertically, thereby achieving die-cutting roller pressure adjustment. During the downward movement of the sliding block, the sliding block drives the pressure block to move downward. The pressure block compresses the pressure spring, and the distance between the pressure block and the pressure sensor continuously decreases. The degree of compression of the pressure spring gradually increases, and the pressure of the pressure spring on the pressure sensor gradually increases. The pressure sensor detects the pressure of the pressure spring and transmits the detected pressure to the controller. When the preset die-cutting pressure is reached, the controller controls the lifting motor to stop rotating, the lead screw stops rotating, the sliding block stops moving downward, and the die-cutting roller stops moving downward.

[0011] Therefore, with this solution, after replacing the die on the die-cutting roller, there is no need to manually adjust the die-cutting pressure. Instead, the lifting motor drives the die-cutting roller downwards. During the downward movement of the die-cutting roller, a pressure sensor detects the pressure and transmits it to the controller. When the preset die-cutting pressure is reached, the controller stops the lifting motor, and the die-cutting roller stops moving downwards. Compared to existing technologies that require manual adjustment of the die-cutting pressure and visual observation of the adjustment effect, this method is simple and convenient. It eliminates the need for repeated manual adjustments to the die-cutting pressure, and the die-cutting roller automatically stops moving after each position, ensuring the accuracy and precision of the die-cutting pressure. Therefore, with this solution, the die-cutting pressure of the die-cutting roller is more accurate than manual adjustment.

[0012] Preferably, as an improvement, the two roller frames are arranged opposite each other, and each of the opposite sides of the two roller frames is provided with a sliding groove, with the sliding block and the sliding groove slidingly engaged. Thus, the sliding groove serves to guide and limit the vertical sliding of the sliding block.

[0013] Preferably, as an improvement, one of the roller frames is provided with a vertical strip hole, and a drive motor is provided on the side of the roller frame. The output shaft of the drive motor and the roller shaft of the blade roller are connected through the strip hole.

[0014] The drive motor is used to drive the rotation of the cutting roller. The strip hole allows the output shaft of the drive motor and the roller shaft of the cutting roller to be connected through the strip hole. On the other hand, the strip hole is strip-shaped, so that the drive motor also moves vertically during the vertical movement of the cutting roller. The strip hole will not obstruct or interfere with the drive motor moving vertically with the cutting roller.

[0015] Preferably, as an improvement, a motor mount is vertically slidable on the outer side of the roller frame, and the drive motor is mounted on the motor mount. The motor mount is used to support the drive motor.

[0016] Preferably, as an improvement, the motor base and the sliding block are fixedly connected through a slotted hole. Thus, the motor base and the sliding block are fixed together, and movement of the sliding block causes the motor base to move along with it.

[0017] Preferably, as an improvement, a protective part is fixedly provided on the roller frame to shield the drive motor. The protective part shields the drive motor, reducing its exposure and improving the safety of the device.

[0018] Preferably, as an improvement, the roller frame is equipped with a protective cover that shields the lifting motor, drive gear, and driven gear. The protective cover reduces the exposure of the lifting motor, drive gear, and driven gear, thus improving safety during use.

[0019] Preferably, as an improvement, the roller frame is provided with a spring groove, the pressure sensor is located at the bottom of the spring groove, the spring is located in the spring groove, and the pressure block is inserted into the spring groove. Thus, the spring groove limits the movement of the spring and simultaneously accommodates the spring and pressure sensor, preventing the spring from bending during compression.

[0020] Preferably, as an improvement, a guide roller is installed on the roller frame. The guide roller is used to guide the label conveying, so that the label enters smoothly between the die-cutting roller and the carrier roller, and the die-cutting roller performs die-cutting on the label.

[0021] The above improvement schemes can be combined in any way as long as they do not contradict each other. Attached Figure Description

[0022] Figure 1 This is a three-dimensional view of the blade roller clamping force adjustment device.

[0023] Figure 2 for Figure 1 Another perspective stereoscopic view.

[0024] Figure 3 This is a partial sectional view of the first roller frame. Detailed Implementation

[0025] The following detailed description illustrates the specific implementation method:

[0026] The reference numerals in the accompanying drawings include: first roller frame 1, second roller frame 2, bracket 3, guide roller 4, sliding groove 5, lead screw 6, sliding block 7, blade roller 8, bearing roller 9, lifting motor 10, driving gear 11, driven gear 12, first sprocket 13, second sprocket 14, strip hole 15, drive motor 16, motor base 17, protective plate 18, pressure block 19, compression spring 20, pressure sensor 21, shaft hole 22.

[0027] Example 1

[0028] The basics are as follows: Figures 1-2 As shown: The blade roller clamping force adjustment device includes two roller frames, namely the first roller frame 1 and the second roller frame 2. The first roller frame 1 and the second roller frame 2 are arranged opposite to each other and are both arranged vertically. A bearing roller 9 is rotatably connected between the two roller frames through a bearing. A motor (not shown in the figure) is provided on the roller frame for driving the bearing roller 9 to rotate.

[0029] Sliding blocks 7 are vertically slidably connected to two roller frames. Specifically, each roller frame 1 and roller frame 2 has a sliding groove 5 on its two opposite sides. The sliding block 7 is located in the sliding groove 5 and can move vertically within it. Vertical lead screws 6 are rotatably mounted on both roller frames. The lead screws 6 pass through the top of the roller frame and insert into the sliding groove 5. The two lead screws 6 are threadedly connected to the vertical threaded holes on the two sliding blocks 7. The bottom ends of the two lead screws 6 are rotatably connected to the bottom of the sliding groove 5 via bearings, and the tops of the two lead screws 6 and the sliding groove 5 are rotatably connected via bearings. The top ends of the two lead screws 6 protrude from the tops of the two roller frames.

[0030] A cutting roller 8 is rotatably connected between two sliding blocks 7. Specifically, the two sliding blocks 7 are provided with shaft holes 22, and a roller shaft is coaxially fixed on the cutting roller 8. The roller shaft is rotatably connected to the shaft hole 22 through a bearing. The cutting roller 8 is located above the carrying roller 9.

[0031] Both lead screws 6 are coaxially fixedly connected to sprockets. The lead screw 6 on the first roller frame 1 is coaxially fixed (e.g., by welding or by key) to a first sprocket 13, and the lead screw 6 on the second roller frame 2 is coaxially fixed to a second sprocket 14. A chain connects the first sprocket 13 and the second sprocket 14, so that when the first sprocket 13 rotates, it can drive the second sprocket 14 to rotate via the chain.

[0032] A lifting motor 10 is bolted to the first roller frame 1. A drive gear 11 is coaxially fixed (e.g., connected by a key) to the output shaft of the lifting motor 10. A driven gear 12 is coaxially fixed (e.g., connected by a key) to the lead screw 6 on the first roller frame 1. The drive gear 11 and the driven gear 12 mesh. The diameter of the drive gear 11 is smaller than the diameter of the driven gear 12.

[0033] To ensure safety, protective covers (not shown in the figure) can be installed on the top of the first roller frame 1 and the top of the second roller frame 2. The protective cover on the first roller frame 1 covers the lifting motor 10, the driving gear 11, and the driven gear 12. The protective cover on the second roller frame 2 covers the second sprocket 14. In this way, the lifting motor 10, the driving gear 11, the driven gear 12, the first sprocket 13, and the second sprocket 14 are not exposed to a large extent, which helps to improve the safety of use when the lifting motor 10, the driving gear 11, the driven gear 12, the first sprocket 13, and the second sprocket 14 are in operation.

[0034] Combination Figure 2 As shown, a vertical strip-shaped hole 15 is provided on the side of the first roller frame 1 away from the second roller frame 2. The vertical strip-shaped hole 15 is connected to the sliding groove 5. A drive motor 16 is provided on the side of the first roller frame 1 away from the second roller frame 2. The output shaft of the drive motor 16 and the roller shaft of the blade roller 8 are connected through the strip-shaped hole 15 (e.g., through a coupling). A motor base 17 is vertically slidable on the outer side of the first roller frame 1 away from the second roller frame 2. The motor base 17 and the sliding block 7 on the first roller frame 1 are fixedly connected through the strip-shaped hole 15 (e.g., through bolts or screws). The drive motor 16 is mounted on the motor base 17. The motor base 17 is used to support the drive motor 16. The first roller frame 1 is welded or integrally fixed on the side away from the second roller frame 2, and a protective part is provided to shield the drive motor 16. There are two protective plates 18, which are arranged opposite to each other. The drive motor 16 and the motor base 17 are located between the two protective plates 18. The two protective plates 18 provide a certain degree of protection and shielding for the drive motor 16 and the motor base 17.

[0035] Both the first roller frame 1 and the second roller frame 2 are fixedly mounted with brackets 3 by screws. There are two brackets 3 on the first roller frame 1, located on both sides of the first roller frame 1, and two brackets 3 on the second roller frame 2, located on both sides of the second roller frame 2. The two brackets 3 on the first roller frame 1 and the two brackets 3 on the second roller frame 2 are arranged opposite each other. Guide rollers 4 are rotatably installed between the two opposing brackets 3 on the first roller frame 1 and the second roller frame 2. The guide rollers 4 are used to guide the conveying of the labels. After the labels are printed, they are conveyed to one of the guide rollers 4, and then enter between the carrying roller 9 and the die-cutting roller 8. The die-cutting roller 8 performs die-cutting on the passing labels, and the die-cut labels are then conveyed outwards via the other guide roller 4.

[0036] The specific implementation process is as follows: In the prior art, the two lead screws 6 are manually rotated to realize the vertical movement of the two sliding blocks 7, thereby moving the die-cutting roller 8 and adjusting the die-cutting pressure. However, this method requires both hands to rotate the two lead screws 6 simultaneously, which is cumbersome and cannot guarantee that the two lead screws 6 will rotate at the same time, resulting in asynchronous rotation. In the solution of this embodiment, the lifting motor 10 drives the drive gear 11 to rotate, the drive gear 11 drives the driven gear 12 to rotate, and the driven gear 12 drives the lead screw 6 on the first roller frame 1 to rotate. The lead screw 6 drives the first sprocket 13 to rotate, and the first sprocket 13 drives the second sprocket 14 to rotate via a chain, thereby driving the lead screw 6 on the second roller frame 2 to rotate. The two lead screws 6 are linked together through the sprocket and chain mechanism, thus realizing the simultaneous driving of the two lead screws 6. In this way, the two lead screws 6 rotate simultaneously, and the rotation of the two lead screws 6 respectively drives the two sliding blocks 7 to move vertically on the roller frame, realizing the vertical movement of the die-cutting roller 8, and thus realizing the pressure adjustment of the die-cutting roller 8.

[0037] Example 2

[0038] This embodiment provides another type of blade roller clamping force adjustment device. This device is further defined based on Embodiment 1; specifically, at least one roller frame is equipped with a pressure sensor 21, combined with… Figure 3 As shown, taking the first roller frame 1 as an example, a pressure block 19 is welded and fixedly connected to the bottom of the sliding block 7. The first roller frame 1 is provided with a spring groove, the top of which communicates with the sliding groove 5. The pressure spring 20 and the pressure sensor 21 are both located in the spring groove, with the pressure sensor 21 located at the bottom of the groove and the pressure spring 20 located above it. The pressure block 19 is inserted downward into the spring groove, with the top of the pressure spring 20 abutting against the bottom of the pressure block 19. A controller, specifically a PLC controller, is electrically connected between the lifting motor 10 and the pressure sensor 21.

[0039] Therefore, when die-cutting different types of labels, first control the lifting motor 10 to rotate, so that the die roller 8 moves upward and away from the carrier roller 9, and replace the corresponding die on the die roller 8. Then, control the lifting motor 10 to rotate in the opposite direction, so that the lifting motor 10 drives the lead screw 6 to rotate, and the lead screw 6 drives the sliding block 7 to move vertically downward on the roller frame. The sliding block 7 drives the die roller 8 to move vertically downward, and the die roller 8 moves downward and approaches the carrier roller 9. As the sliding block 7 moves downward, it drives the pressure block 19 downward. The pressure block 19 enters the pressure spring groove and squeezes the pressure spring 20. The distance between the pressure block 19 and the pressure sensor 21 continuously decreases, and the degree of compression of the pressure spring 20 gradually increases. The pressure of the pressure spring 20 on the pressure sensor 21 gradually increases, and the pressure sensor 21 detects the pressure of the pressure spring 20. The pressure sensor 21 transmits the detected pressure to the controller. When the preset die-cutting pressure is reached (the preset die-cutting pressure is obtained by visually observing the die-cutting effect of the label and then detecting the pressure of the pressure spring 20 by the pressure sensor 21 when the die-cutting effect is appropriate), the controller controls the lifting motor 10 to stop rotating, the lead screw 6 stops rotating, the sliding block 7 stops moving downward, and the die roller 8 stops moving downward. This indicates that the die roller 8 is applying the appropriate die-cutting pressure to the label. In this way, when using this device, you only need to observe the label die-cutting effect with the naked eye once. The pressure sensor 21 detects the pressure of the spring 20 and uses it as the preset die-cutting pressure. In the subsequent process of changing the die plate, there is no need to observe the label die-cutting effect with the naked eye. As long as the pressure sensor 21 detects that the pressure of the spring 20 reaches the preset die-cutting pressure, it means that the label die-cutting pressure is adjusted in place.

[0040] Of course, for different types of labels, the preset die-cutting pressure may be different due to the different thickness and materials of the labels. However, as long as the preset die-cutting pressure of different types of labels is recorded and stored, the corresponding preset die-cutting pressure will be set when different types of labels are die-cut. When the pressure sensor 21 detects that the pressure spring has reached the corresponding preset die-cutting pressure, it means that the label die-cutting pressure has been adjusted in place.

[0041] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A blade roller clamping force adjusting device, comprising two roller frames, a transverse support roller rotatably connected between the two roller frames, a sliding block slidably connected vertically to each of the two roller frames, and a vertical lead screw rotatably mounted on each of the two roller frames, the two lead screws being threadedly connected to the two sliding blocks respectively, a blade roller rotatably connected between the two sliding blocks, the blade roller being located above the support roller, characterized in that: Both lead screws are coaxially fixedly connected to sprockets, and a chain connects the two sprockets; a lifting motor is installed on one of the roller frames, and a drive gear is coaxially fixedly connected to the output shaft of the lifting motor. A driven gear is coaxially fixedly connected to the lead screw on the roller frame. The drive gear and the driven gear mesh, and the diameter of the drive gear is smaller than the diameter of the driven gear.

2. The die roller clamping force adjusting device according to claim 1, characterized in that: Two roller frames are arranged opposite each other, and each of the opposite sides of the two roller frames is provided with a sliding groove. The sliding block and the sliding groove are slidably engaged.

3. The die roller clamping force adjusting device according to claim 1, characterized in that: One of the roller frames has a vertical strip hole, and a drive motor is located on the side of the roller frame. The output shaft of the drive motor and the roller shaft of the blade roller are connected through the strip hole.

4. The blade roller clamping force adjusting device according to claim 3, characterized in that: A motor mount is vertically slidable on the outer side of the roller frame, and the drive motor is mounted on the motor mount.

5. The die roller clamping force adjusting device according to claim 4, characterized in that: The motor base and the sliding block are fixedly connected through a slot.

6. The die roller clamping force adjusting device according to claim 3, characterized in that: The roller frame is fixedly equipped with a protective part to shield the drive motor.

7. The die roller clamping force adjusting device according to claim 1, characterized in that: The roller frame is equipped with a protective cover that covers the lifting motor, drive gear, and driven gear.

8. The die roller clamping force adjusting device according to claim 1, characterized in that: At least one roller frame is equipped with a pressure sensor, a pressure block is fixedly connected to the sliding block, the pressure block is located above the pressure sensor, and a pressure spring is provided between the pressure block and the pressure sensor; a controller is electrically connected between the lifting motor and the pressure sensor.

9. The die roller clamping force adjusting device according to claim 8, characterized in that: The roller frame is provided with a spring groove, the pressure sensor is located at the bottom of the spring groove, the spring is located in the spring groove, and the pressure block is inserted into the spring groove.

10. The die roller clamping force adjusting device according to claim 1, characterized in that: Guide rollers are installed on the roller frame.

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