A packaging paper tray pre-cutting device

Abstract

A kind of packaging paper tray pre-cutting device, including installation fixed frame between traction end and feed end and the pre-cutting component of carrying out packaging paper tray parent plate pre-cutting, the pre-cutting component is installed on installation fixed frame, pre-cutting component includes with installation fixed frame fixed connection cooperation cooperation board, cutting plate located above cooperation board, the cutting plate is connected with installation fixed frame cooperation and is driven by drive motor relative cooperation board up and down movement, multiple cutting knife grooves are fixed on the lower surface of cutting plate, and are sequentially arranged along the traction direction of traction end, cutting knife is fixedly installed in cutting knife groove, and cutting knife is partially exposed on the lower surface of cutting plate, the length of cutting knife exposed on the blade of cutting plate lower surface is adjustable, multiple containing knife grooves are fixedly provided on the cooperation board corresponding to the position of cutting knife, and are sequentially arranged along the traction direction of traction end.The design has the advantages of simple structure, can quickly and efficiently carry out packaging paper tray parent plate cutting.

Description

Technical Field

[0001] This utility model relates to the field of packaging paperboard forming equipment, specifically a device for pre-cutting packaging paper trays. Background Technology

[0002] The current packaging for cylindrical nonwoven fabric rolls mainly consists of multiple cardboard boxes bundled together to form the outer packaging. However, in actual production, the cylindrical shape of the nonwoven fabric rolls and the winding process of the nonwoven fabric strip result in curved edges at the top and bottom. This leads to insufficient contact area between the top and bottom and the contact surface, potentially causing the roll to wobble or even tip over. Therefore, a common solution is to add a semi-enclosed L-shaped packaging tray around the top and bottom of the nonwoven fabric roll. This provides sufficient support for both the top and bottom edges of the roll, and combined with the overall cardboard packaging, reduces the risk of tipping over. Unlike conventional cardboard packaging, this packaging tray is difficult to stock in large quantities over a long period, due to factors such as stocking costs and the need for [specific equipment / materials]. The packaging paper trays are stored separately in a separate storage space. Therefore, in actual production, the packaging paper trays are processed and produced on a temporary basis according to order demand. The problem is that when there is an order demand, the required packaging paper trays must be produced in a timely manner. In order to form a circular packaging paper tray, one side of the long strip packaging paper tray mother board needs to be cut and folded to obtain a packaging paper tray with an L-shaped cross section. The main pain point of the first step of cutting is that manual cutting is inefficient, while the production cost of relatively high-end cutting equipment is too high for enterprises to accept. Only after cutting the packaging paper tray mother board in a way that can be folded at a high efficiency and low cost can the subsequent folding process be carried out to obtain the finished semi-enclosed packaging paper tray. Summary of the Invention

[0003] The purpose of this utility model is to provide a packaging paper tray pre-cutting device with a simple structure that can quickly and efficiently pre-cut the packaging paper tray motherboard.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a pre-cutting device for packaging paper trays, comprising a mounting frame disposed between a traction end and a feeding end, and a pre-cutting assembly for pre-cutting the packaging paper tray motherboard. The pre-cutting assembly is mounted on the mounting frame and includes a mating plate fixedly connected to the mounting frame and a cutting plate located above the mating plate. The cutting plate is connected to the mounting frame and is driven by a drive motor to move up and down relative to the mating plate. Multiple cutting grooves arranged sequentially along the traction direction of the traction end are fixedly opened on the lower surface of the cutting plate. Cutting blades partially exposed on the lower surface of the cutting plate are fixedly installed in the cutting grooves. The length of the cutting blades exposed on the lower surface of the cutting plate is adjustable. Each cutting blade includes a transition blade arranged along the traction direction of the traction end and oblique blades extending obliquely from both ends of the transition blade. The transition blade and the oblique blade define the pre-cutting seam shape of the packaging paper tray mother plate. The included angle formed between the oblique blades at both ends of the transition blade is greater than or equal to 15° and less than 90°. The mating plate is fixedly provided with multiple receiving grooves arranged sequentially along the traction direction of the traction end at the corresponding cutting blade position. The receiving grooves include transition grooves set at the corresponding transition blade position and oblique grooves set from both ends of the transition grooves to both sides of the transition grooves. The transition grooves and oblique grooves are used for the transition blades and oblique blades to enter and exit when cutting the packaging paper tray mother plate. One side of the mating plate is provided with a limiting plate connected to the mounting bracket. The other side of the mating plate is provided with at least two limiting posts that cooperate with the limiting plate to limit the packaging paper tray mother plate. The distance between the limiting plate and the limiting posts is adjustable. The packaging paper tray mother plate in the loading state is limited by the limiting plate and the limiting posts on the mating plate and one side is covered on the receiving groove.

[0005] Furthermore, the packaging paper tray motherboard is a rectangular strip of rigid paperboard, the length of the transition blade exposed on the lower surface of the cutting plate is less than the thickness of the packaging paper tray motherboard, and the length of the oblique blade exposed on the lower surface of the cutting plate is greater than the thickness of the packaging paper tray motherboard.

[0006] Furthermore, two transition knife guide limiting plates are fixedly installed in the oblique grooves on both sides of the transition knife groove opening. The transition knife guide limiting plates are made of hard rubber material. The free ends of the two transition knife guide limiting plates do not interfere with each other, and a working gap is formed between the free ends of the transition knife guide limiting plates for the entry and exit of the transition knife blade. Two oblique knife guide limiting plates are fixedly installed in the oblique grooves on both sides of the oblique knife groove opening. The oblique knife guide limiting plates are made of hard rubber material. The free ends of the two oblique knife guide limiting plates do not interfere with each other, and a working gap is formed between the free ends of the oblique knife guide limiting plates for the entry and exit of the oblique knife blade.

[0007] Furthermore, the transition knife guide limiting plates in the transition knife groove are symmetrically arranged, and the oblique knife guide limiting plates in the oblique knife groove are symmetrically arranged.

[0008] Furthermore, the transition blade is a straight blade, the transition groove is a straight groove, the straight blade is arranged parallel to the traction direction of the traction end, and the straight groove is arranged parallel to the traction direction of the traction end.

[0009] The beneficial effects of this utility model are as follows: This utility model uses a cutting blade on a cutting plate that moves up and down to pre-cut the packaging paper tray mother plate, which is confined to the mating plate and is pulled from the feeding end to the traction end. The up and down movement of the entire cutting plate is simple and error-free. The cutting action of the cutting blade and the accommodating groove makes the cutting action of the packaging paper tray mother plate simpler and more efficient. The cutting position of the packaging paper tray mother plate is also less prone to deformation. When there is a need for packaging boxes and packaging paper tray mother plates, the packaging paper tray mother plate can be quickly and efficiently pre-cut according to the temporary use needs of the packaging paper tray mother plate, preparing for the subsequent folding process, facilitating the timely overall packaging and assembly of non-woven fabric rolls, reducing the pressure on packaging box spare parts, and reducing application costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the pre-cutting device for packaging paper trays.

[0011] Figure 2 This is a schematic diagram of the cooperation between the cutting plate and the cutting blade in one embodiment of this utility model.

[0012] Figure 3 This is a schematic diagram of the partial longitudinal section of the transition blade guide limiting plate and the cutting blade edge in one embodiment of this utility model. Detailed Implementation

[0013] In order to make the technical means, innovative features and functions of this utility model easy to understand, this utility model will be further described below.

[0014] like Figure 1-3As shown, the technical solution of the pre-cutting device for packaging paper trays of this utility model includes a mounting frame located between the traction end and the feeding end, and a pre-cutting assembly for pre-cutting the packaging paper tray motherboard. The pre-cutting assembly is mounted on the mounting frame and includes a mating plate 1 fixedly connected to the mounting frame and a cutting plate 2 located above the mating plate 1. The cutting plate 2 is connected to the mounting frame and is driven by a drive motor to move up and down relative to the mating plate 1. Multiple cutting grooves are fixedly opened on the lower surface of the cutting plate 2, arranged sequentially along the traction direction of the traction end. Cutting blades partially exposed on the lower surface of the cutting plate 2 are fixedly installed in the cutting grooves. The length of the cutting blades exposed on the lower surface of the cutting plate 2 is adjustable. The cutting blades include a transition blade 3 arranged along the traction direction of the traction end and oblique blades 4 extending obliquely from both ends of the transition blade 3. The transition blade 3 and the oblique blades 4 surround the packaging paper tray. The pre-cut shape of the paper tray mother plate is such that the included angle formed between the oblique blades 4 at both ends of the transition blade 3 is greater than or equal to 15° and less than 90°. The mating plate 1 is fixed with a plurality of receiving blade grooves arranged sequentially along the traction direction of the traction end, corresponding to the position of the cutting blade. The receiving blade grooves include transition blade grooves 5 set at the position of the transition blade 3 and oblique blade grooves 6 set obliquely from both ends of the transition blade groove 5 to both sides of the transition blade groove 5. The transition blade grooves 5 and oblique blade grooves 6 are used for the transition blades 3 and oblique blades 4 to enter and exit when cutting the packaging paper tray mother plate. One side of the mating plate 1 is provided with a limiting plate 7 connected to the mounting bracket. The other side of the mating plate 1 is provided with at least two limiting posts 8 that cooperate with the limiting plate 7 to limit the packaging paper tray mother plate. The distance between the limiting plate 7 and the limiting posts 8 is adjustable. The packaging paper tray mother plate in the loading state is limited on the mating plate 1 by the limiting plate 7 and the limiting posts 8 and one side is covered on the receiving blade groove.

[0015] In the production process of nonwoven fabric rolls, packaging boxes typically use rigid cardboard for external packaging and protection. However, in actual orders, the nonwoven fabric rolls after winding are not always cylindrical; other shapes and forms also occur. Therefore, to address this, it's crucial to ensure the produced packaging rolls have sufficient structural strength. Figure 2As shown, in one embodiment of this utility model, a partial pre-cut of the packaging paper tray mother board can be performed at the transition blade 3 and transition groove 5 positions of the packaging paper tray cutting position. That is, a partial pre-cut is performed at this position. The packaging paper tray mother board is a rectangular strip of paper hardboard. The blade length of the transition blade 3 exposed on the lower surface of the cutting plate 2 is less than the thickness of the packaging paper tray mother board, and the blade length of the oblique blade 4 exposed on the lower surface of the cutting plate 2 is greater than the thickness of the packaging paper tray mother board. Based on the adjustable blade length of the cutting blade exposed on the lower surface of the cutting plate 2, the design of the transition blade 3 performing a partial pre-cut can allow the pre-cut packaging paper tray mother board to be torn off part of the cardboard at the cutting position according to actual use needs. This maintains the structural strength of the overall finished packaging paper tray as much as possible under actual application needs and avoids the impact of insufficient structural strength of the packaging paper tray during actual use due to excessive cutting, or even the inability to support the non-woven fabric roll.

[0016] When actually cutting the seam, since the packaging paper tray motherboard is cut directly by a cutting blade, some deformation may inevitably occur near the cut position of the finished packaging paper tray motherboard, and even the entire packaging paper tray motherboard may be damaged. Therefore, in order to reduce the problem of deformation or even potential damage and breakage of the packaging paper tray motherboard during the cutting process, such as... Figure 3 As shown, two transition blade guide plates are fixedly installed in the oblique grooves on both sides of the opening of the transition blade groove 5. The transition blade guide plates are made of hard rubber. The free ends of the two transition blade guide plates do not interfere with each other, and a working gap is formed between the free ends of the transition blade guide plates for the transition blade 3 to enter and exit. Two oblique blade guide plates are fixedly installed in the oblique grooves on both sides of the opening of the oblique blade groove 6. The oblique blade guide plates are made of hard rubber. The free ends of the two oblique blade guide plates do not interfere with each other, and a working gap is formed between the free ends of the oblique blade guide plates for the oblique blade 4 to enter and exit. The transition knife guide limiting plates in the knife groove 5 are symmetrically arranged, and the oblique knife guide limiting plates in the oblique knife groove 6 are symmetrically arranged. The aforementioned design, without affecting the cutting knife's direct cutting of the packaging paper tray motherboard, uses the transition knife guide limiting plates and oblique knife guide limiting plates to limit the cutting position of the packaging paper tray motherboard. This reduces the possibility that the packaging paper tray motherboard may deform locally after being subjected to force during the cutting process, thus entering the receiving knife groove and causing deformation or even damage. This improves the yield rate of the packaging paper tray motherboard cutting process and also avoids the problem that some of the cut packaging paper tray motherboard may get stuck in the receiving knife groove and be difficult to continue to be pulled.

[0017] In practical applications, various shapes of transition blades 3 and transition grooves 5 can be used to cut the cutting seams according to the actual situation. Even different cutting seams can be made on the same packaging paper tray motherboard. This design allows the finished packaging paper trays to be arranged in shapes beyond just a disc. A single, longer packaging paper tray motherboard can even be used for arranging and packaging multiple non-woven fabric rolls, thus better adapting to actual production application needs and saving some packaging costs. In one embodiment of this utility model, the transition blade 3 is a straight blade, and the transition groove 5 is a straight groove. The straight blade is parallel to the traction direction of the traction end, and the straight groove is also parallel to the traction direction of the traction end. The design of connecting the two ends of the straight cutting seam to the oblique cutting seam makes the overall packaging paper tray more locally bendable, facilitating the addition of packaging paper trays. Of course, for different non-woven fabric rolls, the transition blade 3 and transition groove 5 can also be designed into arc shapes or other shapes that better meet application requirements, depending on the actual situation.

[0018] Although the present invention has been disclosed above with specific embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended claims.

Claims

1. A pre-cutting device for packaging paper trays, characterized in that: The device includes a mounting frame located between the traction end and the feeding end, and a pre-cutting assembly for pre-cutting the packaging paper tray motherboard. The pre-cutting assembly is mounted on the mounting frame and includes a mating plate (1) fixedly connected to the mounting frame and a cutting plate (2) located above the mating plate (1). The cutting plate (2) is connected to the mounting frame and is driven by a drive motor to move up and down relative to the mating plate (1). Multiple cutting grooves are fixedly opened on the lower surface of the cutting plate (2) and arranged sequentially along the traction direction of the traction end. Cutting blades partially exposed on the lower surface of the cutting plate (2) are fixedly installed in the cutting grooves. The length of the cutting blade exposed on the lower surface of the cutting plate (2) is adjustable. The cutting blade includes a transition blade (3) arranged along the traction direction of the traction end and oblique blades (4) extending obliquely from both ends of the transition blade (3). The transition blade (3) and the oblique blades (4) form the shape of the pre-cutting seam of the packaging paper tray motherboard. The included angle formed between the two oblique blades (4) is greater than or equal to 15° and less than 90°. The mating plate (1) is fixedly provided with multiple accommodating grooves arranged sequentially along the traction direction of the traction end, corresponding to the position of the cutting blade. The accommodating grooves include a transition groove (5) corresponding to the position of the transition blade (3) and oblique grooves (6) obliquely arranged from both ends of the transition groove (5) towards both sides of the transition groove (5). The transition grooves (5) and oblique grooves (6) provide space for the transition blade (3) and... When the oblique blade (4) cuts the packaging paper tray mother plate, it enters and exits the accommodating space. The mating plate (1) has a limiting plate (7) connected to the mounting bracket on one side. The mating plate (1) has at least two limiting posts (8) that cooperate with the limiting plate (7) to limit the packaging paper tray mother plate. The distance between the limiting plate (7) and the limiting post (8) is adjustable. The packaging paper tray mother plate in the loading state is limited by the limiting plate (7) and the limiting post (8) on the mating plate (1) and one side is covered on the accommodating blade groove.

2. The packaging paper tray pre-cutting device according to claim 1, characterized in that: The packaging paper tray motherboard is a rectangular strip of paper hardboard. The length of the transition blade (3) exposed on the lower surface of the cutting plate (2) is less than the thickness of the packaging paper tray motherboard, and the length of the oblique blade (4) exposed on the lower surface of the cutting plate (2) is greater than the thickness of the packaging paper tray motherboard.

3. A pre-cutting device for packaging paper trays according to claim 1 or 2, characterized in that: Two transition knife guide plates are fixedly installed on both sides of the groove opening of the transition knife groove (5) in the oblique groove. The transition knife guide plates are made of hard rubber material. The free ends of the two transition knife guide plates do not interfere with each other. A working gap is formed between the free ends of the transition knife guide plates for the transition knife blade (3) to enter and exit. Two oblique knife guide plates are fixedly installed on both sides of the groove opening of the oblique knife groove (6). The oblique knife guide plates are made of hard rubber material. The free ends of the two oblique knife guide plates do not interfere with each other. A working gap is formed between the free ends of the oblique knife guide plates for the oblique knife blade (4) to enter and exit.

4. The packaging paper tray pre-cutting device according to claim 3, characterized in that: The transition knife guide limiting plates in the transition knife groove (5) are symmetrically arranged, and the oblique knife guide limiting plates in the oblique knife groove (6) are symmetrically arranged.

5. A pre-cutting device for packaging paper trays according to claim 1, 2, or 4, characterized in that: The transition blade (3) is a straight blade, the transition groove (5) is a straight groove, the straight blade is parallel to the traction direction of the traction end, and the straight groove is parallel to the traction direction of the traction end.

6. The packaging paper tray pre-cutting device according to claim 3, characterized in that: The transition blade (3) is a straight blade, the transition groove (5) is a straight groove, the straight blade is parallel to the traction direction of the traction end, and the straight groove is parallel to the traction direction of the traction end.

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