Cutting broach for snapping ear edges of high-speed moving paperboard

Abstract

The utility model relates to a cut-off broach for pulling and breaking ear edges of a high-speed moving paperboard, which comprises a blade main body, the blade main body comprises a mounting part and a pulling and breaking part, the pulling and breaking part is provided with a pulling and breaking edge for contacting the ear edges, and the pulling and breaking edge is provided with a tooth part; when the blade is snapped, the extension direction of the snapping edge is perpendicular to the moving direction of the blade body. According to the scheme, the extending direction of the snapping edge is perpendicular to the moving direction of the blade body, the anti-skid effect of the snapping part on the lug edge is good, the lug edge can be snapped conveniently and rapidly under the condition that a paperboard moves at the high speed of 300 m / min or above, the snapping and tearing stroke distance of the paperboard is short, and damage to the paperboard is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the field of carton board trimming equipment, in particular to a cutting-off puller for ear edge breaking of high-speed moving paper board. BACKGROUND

[0002] During carton production, the ear edges on both sides of the paper board need to be cut according to the size. During the cutting, the paper board moves fast on the equipment, the cutting knife moves downward to cut the ear edges on both sides of the paper board, then the ear edges are cut off by the cutting-off knife and enter the pipeline system, the pipeline system is provided with a shredder to shred the ear edges and then the ear edges are transported to the designated position through the pipeline. When the width of the ear edge needs to be changed, the ear edge of the previous order needs to be broken, then the cutting knife is replaced to cut the ear edge with the width required by the order.

[0003] The related art discloses an ear edge breaking knife, referring to Figure 1 、 Figure 2 , including a blade body, one end of the blade body is provided with an oblique surface, the oblique surface is provided with a tooth part 6, the breaking knife slides along the x3 direction during cutting to break the ear edge 8, the tooth part 6 contacts the ear edge 8 to achieve the anti-skid effect, but it is found in the production process that when the moving speed of the paper board reaches 300 m / min or above, the ear edge 8 will still slip off the breaking knife during breaking, which causes the ear edge 8 to be pulled along the edge of the paper board all the time, damaging the paper board behind, and the machine needs to be stopped for maintenance, causing serious loss. CONTENT OF THE UTILITY MODEL

[0004] In order to achieve good breaking effect of the ear edge of the paper board under high-speed movement, the application provides a cutting-off puller for ear edge breaking of high-speed moving paper board.

[0005] The application provides a cutting-off puller for ear edge breaking of high-speed moving paper board, which adopts the following technical scheme:

[0006] The cutting-off puller for ear edge breaking of high-speed moving paper board comprises a blade body, the blade body comprises a mounting part and a breaking part, the breaking part is provided with a breaking edge for contacting the ear edge, and the breaking edge is provided with a tooth part.

[0007] By adopting the above technical scheme, the mounting part is used for fixing the puller, the side edge of the ear edge vertically contacts the tooth part during breaking of the ear edge by the breaking part, the tooth part has better anti-skid effect on the ear edge, the ear edge is conveniently broken in the direction away from the paper board, the breaking effect of the ear edge of the paper board is good under high speed, the paper board behind is not easy to be damaged, and the production cost of the paper board is reduced.

[0008] Optionally, the blade body further comprises a supporting plate, and the supporting plate is arranged on the side of the breaking part away from the breaking edge.

[0009] By adopting the technical scheme, the support plate strengthens the pull-off part, improves the strength of the pull-off edge, supports the paperboard during pulling-off, and prevents the paperboard from deforming during pulling-off, so that the ear edge can be quickly pulled off, the tearing distance of the ear edge on the paperboard is short, the paperboard damage distance is reduced, and the cost is saved.

[0010] Optionally, the pull-off part is integrally formed with the support plate.

[0011] By adopting the technical scheme, the position of the support plate is fixed with the pull-off part, and the structure is integrally formed and has high strength.

[0012] Optionally, a relief chamfer is arranged at the top edge of the end of the pull-off part away from the mounting part, and the relief chamfer extends to the edge of the support plate.

[0013] By adopting the technical scheme, the paperboard moves from the pull-off part to the mounting part, the relief chamfer is arranged, the paperboard is not easily damaged by the rhombus of the support plate, and the paperboard runs smoothly.

[0014] Optionally, the included angle between the relief chamfer and the top surface of the pull-off part is 12-20 degrees.

[0015] By adopting the technical scheme, the paperboard is not easily damaged at the angle.

[0016] Optionally, a plurality of mounting holes are arranged on the mounting part.

[0017] By adopting the technical scheme, the mounting part is conveniently mounted.

[0018] In summary, the present application has at least one of the following beneficial technical effects:

[0019] 1. The extension direction of the pull-off edge is perpendicular to the moving direction of the blade body, the pull-off part has good anti-skid effect on the ear edge, the ear edge can be quickly pulled off in the case of high-speed movement of the paperboard, and the ear edge can be quickly pulled off in the case of high-speed movement of the paperboard.

[0020] 2. The support plate supports the paperboard during pulling-off, prevents the paperboard from deforming during pulling-off, facilitates quick pulling-off of the ear edge, shortens the tearing distance of the ear edge on the paperboard, reduces the paperboard damage distance, and saves cost.

[0021] 3. The relief chamfer prevents the paperboard from being damaged by the blade body. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a whole schematic view of an ear edge pull-off knife in the related art.

[0023] Figure 2 is a display view of the ear edge pull-off knife in use in the related art.

[0024] Figure 3It is the overall schematic diagram of the cutting-off drawknife for ear edge breaking of high-speed moving paperboard of the embodiment of the present application.

[0025] Figure 4 It is the display diagram of the cutting-off drawknife for ear edge breaking of high-speed moving paperboard in use.

[0026] Mark explanation: 1, mounting part; 2, breaking part; 3, support plate; 4, mounting hole; 5, breaking edge; 6, tooth part; 7, avoiding chamfer; 8, ear edge. Specific implementation

[0027] The present application is further explained in detail in combination with the drawings.

[0028] The embodiment of the present application discloses a cutting-off drawknife for ear edge breaking of high-speed moving paperboard. Figure 3 、 Figure 4 The cutting-off drawknife for ear edge breaking of high-speed moving paperboard comprises a blade main body, the blade main body comprises an integral mounting part 1, a breaking part 2 and a support plate 3, the mounting part 1, the breaking part 2 and the support plate 3 are in the form of a whole plate, the thicknesses are completely the same, and the mounting part 1, the breaking part 2 and the support plate 3 are in the form of L-type arrangement. A plurality of mounting holes 4 are provided on the top surface of the mounting part 1 in a penetrating manner, and are used for mounting the mounting part 1.

[0029] The breaking part 2 is provided with a breaking edge 5 for contacting the ear edge 8 on the side away from the support plate 3, and the breaking edge 5 is integrally formed with a tooth part 6. During breaking, the extension direction of the breaking edge 5 is perpendicular to the moving direction of the blade main body, the moving direction of the paperboard is from the breaking part 2 to the mounting part 1, and the support plate 3 is located below the paperboard, the top surface of the support plate 3 supports the paperboard, and prevents the paperboard from deforming during ear edge 8 breaking.

[0030] The top edge of the end of the breaking part 2 away from the mounting part 1 is provided with an avoiding chamfer 7, the included angle between the avoiding chamfer 7 and the top surface of the breaking part 2 is 12-20 degrees, and in the embodiment, the included angle between the avoiding chamfer 7 and the top surface of the breaking part 2 is 15 degrees. The avoiding chamfer 7 extends to the edge of the starting direction of the support plate 3 moving towards the paperboard, facilitates the paperboard passing through the top surface of the support plate 3, and prevents the paperboard from being damaged by the edge of the support plate 3.

[0031] The implementation principle of the cutting-off drawknife for ear edge 8 breaking of high-speed moving paperboard of the embodiment of the present application is as follows: during work, the main blade is fixed on the moving seat through the mounting part 1, and the moving direction of the moving seat driving the main blade is perpendicular to the moving direction of the paperboard. When the ear edge 8 needs to be broken, the edge of the ear edge 8 separated from the paperboard is vertically clamped in the tooth part 6, the support plate 3 is supported on the bottom of the paperboard, the main blade continues to move to break the ear edge 8, the breaking distance is small, the ear edge 8 is broken at the moving speed of the paperboard above 300 m / min, the ear edge 8 breaking effect is good.

[0032] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A cutting-off drawknife for ear-side breaking of high-speed moving paperboard, comprising a blade body, characterized in that: The blade body comprises a mounting part (1) and a breaking part (2), the breaking part (2) is provided with a breaking edge (5) for contacting the ear edge (8), the breaking edge (5) is provided with a tooth part (6); during breaking, the extension direction of the breaking edge (5) is perpendicular to the moving direction of the blade body.

2. The slitting knife for ear break of high speed moving paperboard according to claim 1, characterized in that: The blade body further comprises a support plate (3), the support plate (3) is arranged on the side of the breaking part (2) away from the breaking edge (5).

3. The slitting knife for ear-side breaking of high-speed moving paperboard according to claim 2, characterized in that: The breaking part (2) and the support plate (3) are integrally formed.

4. The slitting knife for ear-side breaking of high-speed moving paperboard according to claim 3, characterized in that: The top edge of the end of the breaking part (2) away from the mounting part (1) is provided with a relief chamfer (7), the relief chamfer (7) extends to the edge of the support plate (3).

5. The slitting knife for ear-side breaking of high-speed moving paperboard according to claim 4, characterized in that: The included angle between the relief chamfer (7) and the top surface of the breaking part (2) is 12-20 degrees.

6. The slitting knife for ear-side breaking of high speed moving paperboard according to claim 1, characterized in that: The mounting part (1) is provided with a plurality of mounting holes (4).

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