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

Abstract

The invention relates to a die-cutting machine capable of adjusting the distance between two rollers in a large range. The die-cutting machine comprises a rack, an upper roller and a lower roller, the upper roller and the lower roller are installed on the rack, the upper roller is located over the lower roller, the upper roller is an adjustable roller and moves relative to the lower roller, floating teeth are installed on the upper roller, and fixed teeth are installed 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 invention relates to the technical field of paper art, and in particular to a die-cutting machine with a double-roller spacing adjustable in a large range. Background Art

[0002] At present, the die-cutting machines 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 double 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). 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 completely engaged, the transmission quality is not high, and it is easy to cause broken teeth. Summary of the invention

[0003] The invention provides a die-cutting machine with a double-roller spacing adjustable in a wide range, aiming to solve the above problems.

[0004] The technical solution of the present invention: A double-roller die-cutting machine with a wide range of adjustable spacing, the die-cutting machine 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 located directly above the lower roller, the upper roller is an adjustable roller, and moves relative to the lower roller, the upper roller is mounted with floating teeth, and the lower roller is mounted with fixed teeth; a transition structure is provided on one side of the floating teeth and the fixed teeth, and the floating teeth are connected through the transition structure; 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 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 teeth, a connecting piece B is provided therebetween, the connecting piece B is pivotally connected to the upper transition tooth and the floating teeth respectively, the lower transition tooth meshes with the fixed teeth, a connecting piece C is provided therebetween, and the connecting piece C is pivotally connected to the lower transition tooth and the fixed teeth respectively.

[0005] A double-roller die-cutting machine with a wide range of adjustable spacing, the die-cutting machine 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 located directly above the lower roller, the upper roller is an adjustable roller and moves relative to the lower roller, the upper roller is mounted with floating teeth and the lower roller is mounted with fixed teeth; a transition structure is provided on one side of the floating teeth and the fixed teeth and are connected through the transition structure; 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 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 therebetween, the connecting piece B is pivotally connected to the upper transition tooth and the floating tooth respectively, the lower transition tooth is mounted on the frame and meshes with the fixed tooth.

[0006] When the distance between the two rollers is adjusted, the upper roller moves up and down, and the floating teeth move up and down accordingly. Under the traction of the connecting piece A, the upper transition teeth move accordingly to adapt to the change in the distance between the upper roller and the lower roller. During this process, the floating teeth and the upper transition teeth, the upper transition teeth and the lower transition teeth, and the lower transition teeth and the fixed teeth maintain a meshing state. The above structural design increases the adjustable range of the distance between the upper roller and the lower roller, which is not limited by the floating teeth and the fixed teeth, to 0-15mm, and the transmission is stable. The purpose of the lower transition tooth design is to achieve the upper and lower rollers rotating towards each other (working requirements), and it can be designed to be movable or fixed.

[0007] The above technical solution is further refined, and 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.

[0008] The above technical solution is further refined, and 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 inventor once imagined that an adjustment rod is added to the frame, and the adjustment rod is connected to the upper transition tooth to drive the upper transition tooth to move, and the floating tooth is driven up and down by the connecting piece A to drive the upper roller to move up and down, but this design has problems. 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), and the gear can bear little force and is easy to be damaged; 2) If the upper roller is to move up and down smoothly, the same structural design is required on both sides, and the synchronous driving of the upper roller to move up and down will undoubtedly complicate the structure, which is not worth the loss. Therefore, the inventor abandoned the above idea and adopted the traditional adjustment structure instead, 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, including 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, 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.

[0009] The above technical solution is further refined, 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.

[0010] The above technical solution is further refined, and the die-cutting machine also includes a supporting pallet, which is installed on the frame, and 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.

[0011] The above technical solution is further improved, 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.

[0012] The invention has the advantages of reasonable design and ingenious conception, the adjustable range of the double rollers is improved to 0-15mm, and 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

[0013] Figure 1 It is a three-dimensional diagram of a die-cutting machine with a double roller spacing that can be adjusted in a wide range.

[0014] 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).

[0015] Figure 3 This is a side view of a die-cutting machine with a wide range of adjustable twin-roller spacing (after removing the outer casing).

[0016] Figure 4 This is a schematic diagram of the linkage structure installation.

[0017] 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

[0018] 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, 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, and 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 transition structure 7 is connected; the die-cutting machine also comprises an adjusting structure 8, and the adjusting structure 8 is mounted on the frame 1; the die-cutting machine also comprises a supporting plate 9, and the supporting plate 9 is mounted on the frame 1, and two limit blocks 10 are mounted on the supporting plate 9, and the two limit blocks 10 are opposite to each other to form a width limit; the two limit blocks 10 are connected through a linkage structure 11 mounted in the supporting plate 9, and move synchronously toward each other; 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 is engaged with the lower transition tooth 7-2, and 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 is engaged with the floating tooth 5, and a connecting piece B 7-4 is arranged between them, and 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 is engaged with the fixed tooth 6, and a connecting piece C 7-5 is arranged between them, and the connecting piece C7-5 is pivotally connected to the lower transition tooth 7-2 and the fixed tooth 6 respectively; The adjustment structure 8 includes an inclined wedge block 8-1 and two tension springs 8-2. The inclined wedge block 8-1 is pressed on the two sliders 4 and contacts the wedge surfaces of the two sliders 4. The upper ends of the two tension springs 8-2 are connected to the frame 1 and the lower ends are hooked on the shaft heads at both ends of the upper roller 2. The inclined wedge block 8-1 moves laterally and is assisted by the two tension springs 8-2 to drive the upper roller 2 to move up and down. The driving device 8-3 is connected to the inclined wedge block 8-1, and the driving device 8-3 drives the inclined wedge block 8-1 to move laterally. The driving device 8-3 is composed of a knob connected with a worm and a rack. 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 arranged 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).

[0019] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by 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 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 located directly above the lower roller, the upper roller is an adjustable roller, and moves relative to the lower roller, the upper roller is mounted with floating teeth, and the lower roller is 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 meshes 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 meshes with the floating tooth, and a connecting plate B is arranged therebetween. The connecting plate 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 plate C is arranged therebetween. The connecting plate 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 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 located directly above the lower roller, the upper roller is an adjustable roller, and moves relative to the lower roller, the upper roller is mounted with floating teeth, and the lower roller is 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 meshes 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 meshes with the floating tooth, and a connecting plate B is arranged therebetween. The connecting plate B is pivotally connected to the upper transition tooth and the floating tooth respectively. The lower transition tooth is mounted on the frame and meshes 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 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, assisted by the two tension springs, drives 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 angled wedge block, and the driving structure drives the angled 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 also includes a supporting plate, which is installed on the frame. Two limiting blocks are installed 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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