Die-cutting machine capable of adjusting distance between two rollers in large range

Abstract

The utility model relates to a die-cutting machine capable of adjusting the distance between two rollers in a large range, which comprises a frame, an upper roller and a lower roller, the upper roller and the lower roller are mounted on the frame, the upper roller is positioned right above the lower roller, the upper roller is an adjustable roller and moves relative to the lower roller, floating teeth are mounted on the upper roller, and fixed teeth are mounted on the lower roller. Transition structures are arranged on one sides of the floating teeth and the fixed teeth, and the floating teeth and the fixed teeth are connected through the transition structures; the transition structure comprises an upper transition tooth, a lower transition tooth and a connecting piece A, the upper transition tooth is located above the lower transition tooth and meshed with the lower transition tooth, the connecting piece is in pivot joint with the upper transition tooth and the lower transition tooth, the upper transition tooth is meshed with the floating tooth and connected with the floating tooth through a connecting piece B, and the lower transition tooth is meshed with the fixed tooth and connected with the fixed tooth through a connecting piece C. The adjustable range of the two rollers is increased to 0-15 mm, and after the distance between the two rollers is changed, all the gears are kept meshed all the time, the transmission quality is high, and all the gears are not prone to being broken.

Description

Technical Field

[0001] The utility model relates to the technical field of paper art, in particular to a die-cutting machine with a double-roller spacing adjustable in a wide range. Background Art

[0002] The die-cutting machines currently on the market (such as Patent: 201821224930.5 A Precision Adjustable Embossing Machine) have floating teeth installed on the upper roller and fixed teeth installed on the lower roller. The floating teeth mesh with the fixed teeth. The adjustment range of the twin roller spacing of the die-cutting machine is limited by the floating teeth and the fixed teeth, and the adjustment range is small (usually 4-8mm).

[0003] Increasing the tooth length of the floating teeth and the fixed teeth not only fails to increase the adjustment range, but will cause the floating teeth and the fixed teeth to get stuck; and after the double-roller spacing of the die-cutting machine is adjusted, the floating teeth and the fixed teeth are not fully engaged, the transmission quality is not high, and it is easy to cause broken teeth. Utility Model Content

[0004] The utility model provides a die-cutting machine with a double-roller spacing adjustable in a wide range, aiming to solve the above problems.

[0005] The technical solution of this utility model:

[0006] A double-roller die-cutting machine with a wide range of adjustable spacing, the die-cutting machine includes a frame, an upper roller, and a lower roller, the upper roller and the lower roller are installed on the frame, the upper roller is located directly above the lower roller, the upper roller is an adjustable roller, and moves relative to the lower roller, the upper roller is installed with floating teeth, and the lower roller is installed with fixed teeth; a transition structure is provided on one side of the floating teeth and the fixed teeth, and the transition structure is connected through the transition structure; the transition structure includes an upper transition tooth, a lower transition tooth, and a connecting piece A, the upper transition tooth is located above the lower transition tooth and meshes with the lower transition tooth, the connecting piece is pivotally connected to the upper transition tooth and the lower transition tooth respectively, the upper transition tooth meshes with the floating tooth, and a connecting piece B is provided between them, the connecting piece B is pivotally connected to the upper transition tooth and the floating tooth respectively, the lower transition tooth meshes with the fixed tooth, and a connecting piece C is provided between them, and the connecting piece C is pivotally connected to the lower transition tooth and the fixed tooth respectively.

[0007] A double-roller die-cutting machine with a wide range of adjustable spacing, the die-cutting machine includes a frame, an upper roller, and a lower roller, the upper roller and the lower roller are installed on the frame, the upper roller is located directly above the lower roller, the upper roller is an adjustable roller, and moves relative to the lower roller, the upper roller is installed with floating teeth, and the lower roller is installed with fixed teeth; a transition structure is provided on one side of the floating teeth and the fixed teeth, and the transition structure is connected through the transition structure; the transition structure includes an upper transition tooth, a lower transition tooth, and a connecting piece A, the upper transition tooth is located above the lower transition tooth and meshes with the lower transition tooth, the connecting piece is pivotally connected to the upper transition tooth and the lower transition tooth respectively, the upper transition tooth meshes with the floating tooth, and a connecting piece B is provided between them, the connecting piece B is pivotally connected to the upper transition tooth and the floating tooth respectively, the lower transition tooth is installed on the frame and meshes with the fixed tooth.

[0008] When adjusting the gap between the two rollers, the upper roller moves up and down, and the floating teeth follow suit. Pulled by connecting piece A, the upper transition teeth also move to accommodate the change in the gap between the upper and lower rollers. During this process, the floating teeth maintain meshing with the upper transition teeth, the upper transition teeth with the lower transition teeth, and the lower transition teeth with the fixed teeth. This structural design increases the adjustable range of the gap between the upper and lower rollers to 0-15mm, freeing them from the constraints of the floating and fixed teeth, while maintaining stable transmission. The lower transition teeth are designed to enable the upper and lower rollers to rotate toward each other (as required by the operation) and can be either movable or fixed.

[0009] The above technical solution is further refined. A connecting piece C is provided between the lower transition tooth and the fixed tooth. The connecting piece C is pivotally connected to the lower transition tooth and the fixed tooth respectively.

[0010] The above technical solution is further refined. The upper roller is connected to the frame through two sliders. Based on the above structural design, how to adjust the upper roller to move up and down? The utility model author once imagined adding an adjustment rod to the frame, connecting the adjustment rod to the upper transition tooth, driving the upper transition tooth to move, and the floating tooth driven by the connecting piece A to move up and down, driving the upper roller to move up and down. However, there are problems with this design. 1) When the die-cutting machine is in use, the force acts on the gear (between the main floating gear and the upper transition gear). The gear can bear little force and is easily damaged. 2) In order for the upper roller to move up and down smoothly, the same structural design is required on both sides of the gear to drive the upper roller up and down synchronously, which will undoubtedly complicate the structure and make the loss outweigh the cost. Therefore, the inventor of the utility model abandoned the above idea and instead adopted the traditional adjustment structure, and improved it on the basis of the traditional adjustment structure. Specifically: the die-cutting machine also includes an adjustment structure, which is installed on the frame and includes an inclined wedge block and two tension springs. The inclined wedge block is pressed on the two sliders and contacts the wedge surfaces of the two sliders. The upper ends of the two tension springs are connected to the frame and the lower ends are hooked on the shaft heads at both ends of the upper roller; the inclined wedge block moves laterally and is assisted by two tension springs to drive the upper roller to move up and down; (such as patent: 201821224930.5 A precision adjustable embossing machine) In this way, the adjustment structure (using a tension spring) will not constitute a restriction on the downward movement of the upper roller, so that the minimum distance between the two rollers can be 0mm.

[0011] The above technical solution is further refined, and a driving structure is connected to the inclined wedge block, and the driving structure drives the inclined wedge block to move laterally; the driving structure is composed of a knob connected to a worm and a rack; it has a self-locking function to prevent the inclined wedge block from moving accidentally, resulting in a change in the distance between the two rollers.

[0012] The above technical solution is further refined. The die-cutting machine also includes a supporting pallet, which is installed on the frame. Two limit blocks are installed on the supporting pallet, and the two limit blocks are opposite to each other to form a width limit. When in use, the assembled die-cutting component (pad, knife die, paper) is supported on the supporting pallet and passes forward through the double rollers of the die-cutting machine. The two limit blocks limit the assembled die-cutting component (pad, knife die, paper) from both sides to prevent deviation.

[0013] The above technical solution is further improved in that the two limit blocks are connected by a linkage structure and move toward each other synchronously; the linkage structure is installed in the support plate, which is composed of a gear and a rack; the limit width is adjustable to adapt to die-cutting components (pad, knife die, paper) with different width combinations.

[0014] The utility model has the advantages of reasonable design and ingenious conception. The adjustable range of the double rollers is improved to 0-15mm. After the distance between the double rollers is changed, the gears always keep meshing, the transmission quality is high, and the gears are not easy to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of a die-cutting machine with a wide range of adjustable double roller spacing.

[0016] Figure 2 This is a three-dimensional diagram of a die-cutting machine with a wide range of adjustable double-roller spacing (after removing the outer shell).

[0017] Figure 3 This is a side view of a die-cutting machine with a wide range of adjustable twin-roller spacing (with the outer casing removed).

[0018] Figure 4 This is a schematic diagram of the linkage structure installation.

[0019] In the figure, frame 1, upper roller 2, lower roller 3, slider 4, floating tooth 5, fixed tooth 6, transition structure 7, upper transition tooth 7-1, lower transition tooth 7-2, connecting piece A 7-3, connecting piece B 7-4, connecting piece C 7-5, adjustment structure 8, inclined wedge block 8-1, tension spring 8-2, driving device 8-3, supporting plate 9, limit block 10, linkage structure 11, gear 11-1, rack 11-2. DETAILED DESCRIPTION

[0020] like Figure 1-4 As shown, a double-roller spacing widely adjustable die-cutting machine comprises a frame 1, an upper roller 2, and a lower roller 3. The upper roller 2 and the lower roller 3 are mounted on the frame 1, and the upper roller 2 is located directly above the lower roller 3. The upper roller 2 is an adjustable roller and moves relative to the lower roller 3. It is connected to the frame 1 through two sliders 4. A floating tooth 5 is mounted on the upper roller 2, and a fixed tooth 6 is mounted on the lower roller 3. A transition structure 7 is provided on one side of the floating tooth 5 and the fixed tooth 6, and the two are connected through the transition structure 7. The die-cutting machine also comprises an adjusting structure 8, which is mounted on the frame 1. The die-cutting machine also comprises a supporting plate 9, which is mounted on the frame 1. Two limit blocks 10 are mounted on the supporting plate 9. The two limit blocks 10 are opposite to each other to form a width limit. The two limit blocks 10 are connected by a linkage structure 11 mounted in the supporting plate 9 and move toward each other synchronously.

[0021] The transition structure 7 includes an upper transition tooth 7-1, a lower transition tooth 7-2, and a connecting piece A 7-3, wherein the upper transition tooth 7-1 is located above the lower transition tooth 7-2 and engages with the lower transition tooth 7-2. The connecting piece A 7-3 is pivotally connected to the upper transition tooth 7-1 and the lower transition tooth 7-2 respectively. The upper transition tooth 7-1 engages with the floating tooth 5, with a connecting piece B 7-4 disposed therebetween. The connecting piece B 7-4 is pivotally connected to the upper transition tooth 7-1 and the floating tooth 5 respectively. The lower transition tooth 7-2 engages with the fixed tooth 6, with a connecting piece C 7-5 disposed therebetween. The connecting piece C7-5 is pivotally connected to the lower transition tooth 7-2 and the fixed tooth 6 respectively.

[0022] Adjustment structure 8 includes an inclined wedge 8-1 and two tension springs 8-2. The inclined wedge 8-1 presses against the two sliders 4, making contact with their wedge surfaces. The upper ends of the two tension springs 8-2 are connected to the upper frame 1, and the lower ends are hooked to the shaft ends of the upper roller 2. The inclined wedge 8-1 moves laterally, assisted by the two tension springs 8-2, driving the upper roller 2 up and down. A drive device 8-3 is connected to the inclined wedge 8-1 and drives the inclined wedge 8-1 to move laterally. The drive device 8-3 consists of a knob connected to a worm gear and a rack.

[0023] The linkage structure 11 is composed of a gear 11-1 and a rack 11-2 (two racks 11-2 and one gear 11-1, the gear 11-1 is in the middle, the two racks 11-2 are located on both sides of the gear 11-1 and mesh with the gear 11-1; the two limit blocks 10 are respectively fixed on the two racks 11-2).

[0024] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-roller die-cutting machine with a wide range of adjustable spacing, the die-cutting machine comprising a frame, an upper roller, and a lower roller, the upper roller and the lower roller being mounted on the frame, the upper roller being located directly above the lower roller, the upper roller being an adjustable roller and being movable relative to the lower roller, the upper roller being mounted with floating teeth, and the lower roller being mounted with fixed teeth; characterized in that: The floating teeth and the fixed teeth are provided with a transition structure on one side and are connected through the transition structure; The transition structure includes an upper transition tooth, a lower transition tooth, and a connecting piece A. The upper transition tooth is located above the lower transition tooth and engages with the lower transition tooth. The connecting piece is pivotally connected to the upper transition tooth and the lower transition tooth respectively. The upper transition tooth engages with the floating tooth, and a connecting piece B is arranged between them. The connecting piece B is pivotally connected to the upper transition tooth and the floating tooth respectively. The lower transition tooth engages with the fixed tooth, and a connecting piece C is arranged between them. The connecting piece C is pivotally connected to the lower transition tooth and the fixed tooth respectively.

2. A double-roller die-cutting machine with a wide range of adjustable spacing, the die-cutting machine comprising a frame, an upper roller, and a lower roller, the upper roller and the lower roller being mounted on the frame, the upper roller being located directly above the lower roller, the upper roller being an adjustable roller and being movable relative to the lower roller, the upper roller being mounted with floating teeth, and the lower roller being mounted with fixed teeth; characterized in that: The floating teeth and the fixed teeth are provided with a transition structure on one side and are connected through the transition structure; The transition structure includes an upper transition tooth, a lower transition tooth, and a connecting plate A. The upper transition tooth is located above the lower transition tooth and engages with the lower transition tooth. The connecting plate is pivotally connected to the upper transition tooth and the lower transition tooth respectively. The upper transition tooth engages with the floating tooth, and a connecting plate B is arranged between them. The connecting plate B is pivotally connected to the upper transition tooth and the floating tooth respectively. The lower transition tooth is installed on the frame and engages with the fixed tooth.

3. A die-cutting machine with a wide range of adjustable double roller spacing according to claim 2, characterized in that: A connecting piece C is provided between the lower transition tooth and the fixed tooth, and the connecting piece C is pivotally connected to the lower transition tooth and the fixed tooth respectively.

4. A die-cutting machine with a wide range of adjustable double roller spacing according to claim 1 or 2, characterized in that: The upper roller is connected to the frame via two sliders; The die-cutting machine also includes an adjustment structure, which is installed on the frame and includes an inclined wedge and two tension springs. The inclined wedge is pressed on the two sliders and contacts the wedge surfaces of the two sliders. The upper ends of the two tension springs are connected to the frame and the lower ends are hooked on the shaft heads at both ends of the upper roller. The inclined wedge moves laterally, assisted by the two tension springs, to drive the upper roller to move up and down.

5. A die-cutting machine with a wide range of adjustable double roller spacing according to claim 4, characterized in that: A driving structure is connected to the inclined wedge block, and the driving structure drives the inclined wedge block to move laterally; The driving structure is composed of a knob connected with a worm and a rack.

6. A die-cutting machine with a wide range of adjustable double roller spacing according to claim 1 or 2, characterized in that: The die-cutting machine further comprises a supporting plate, which is mounted on the frame. Two limiting blocks are mounted on the supporting plate, and the two limiting blocks are opposite to each other to form a width limit.

7. A die-cutting machine with a wide range of adjustable double roller spacing according to claim 6, characterized in that: The two limit blocks are connected by a linkage structure and move toward each other synchronously; The linkage structure is installed in the supporting plate and is composed of a gear and a rack.

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