Bottom cutter structure for paperboard trimming

Abstract

The dead knife structure comprises a mounting plate and a dead knife arranged on the mounting plate, the dead knife is arranged on the mounting plate in a sliding mode, the sliding direction of the dead knife is that the dead knife slides away from or close to the end, where the knife point is located, of the dead knife, and the dead knife structure further comprises a fixing piece for fixing the dead knife to the mounting plate. The dead knife is arranged on the mounting plate in a sliding mode, the position of the dead knife is fixed through the fixing piece, after the dead knife is abraded, the dead knife can integrally slide towards the end close to the knife point of the dead knife, the ear cutter still keeps good shearing force with the knife point of the dead knife, maintenance is convenient, accessories do not need to be replaced during maintenance, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of cardboard processing equipment, and in particular to a bottom knife structure for cardboard trimming. Background Art

[0002] Cardboard (corrugated cardboard) is a thick paper sheet processed from various pulps. With the rapid development of the Internet industry in recent years, the logistics industry has also developed rapidly. Cardboard, corrugated cardboard and cartons are used as packaging raw materials, and the demand is also huge. Different customers have different requirements for cardboard due to different needs. Therefore, in the process of processing cardboard, the cardboard needs to be trimmed to obtain cardboard of the corresponding size that meets customer requirements.

[0003] Patent number CN220279850U discloses a tail-cutting device for cardboard production, comprising a frame and a slide. The frame is provided with a blanking hole, the slide is provided with a support plate, a longitudinal cutter is rotatably connected to the slide, the slide is provided with a drive assembly for driving the longitudinal cutter to rotate, the slide is also provided with a cross-cutting knife, and the frame is provided with a drive member for driving the slide to move. When the cardboard needs to be trimmed, the drive assembly is controlled to drive the longitudinal cutter to rotate and cut the cardboard, thereby cutting out the head of the part to be trimmed on the cardboard, and then the cardboard is trimmed. After the trimming is completed, the drive member drives the slide to move, and the slide drives the cross-cutting knife to move, thereby cutting off the excess part and the connection between the cardboard, achieving tail-cutting, reducing damage to the unprocessed cardboard behind, thereby reducing material loss and reducing the cost of cardboard trimming.

[0004] However, when the ear cutting knife rotates and cuts the cut edge strip with the support plate, the cutting end of the support plate used for cutting with the ear cutting knife is prone to wear. After long-term use, the support plate and the ear cutting knife are prone to loosening, affecting the cutting of the edge strip. The support plate needs to be replaced during maintenance, which increases maintenance costs. Utility Model Content

[0005] In order to reduce maintenance costs, the present application provides a bottom knife structure for cardboard trimming.

[0006] The present application provides a cardboard trimming bottom knife structure, which adopts the following technical solution:

[0007] A bed knife structure for cardboard trimming includes a mounting plate and a bed knife arranged on the mounting plate. The bed knife is slidably arranged on the mounting plate. The sliding direction of the bed knife is to slide away from or close to the end where the blade of the bed knife is located. The bed knife also includes a fixing piece for fixing the bed knife to the mounting plate.

[0008] By adopting the above technical solution, when one end of the blade of the bed knife is worn, the fixing part releases the fixing of the bed knife, and the bed knife is slid toward the end close to the blade of the bed knife, and then the fixing part re-fixes the bed knife and the mounting plate, so that the ear cutting knife still maintains a good shearing force with the blade of the bed knife, so that the shearing effect is good. During maintenance, there is no need to replace accessories, and the maintenance operation is simple and convenient, saving maintenance costs.

[0009] Optionally, a fixing hole is provided on the mounting plate, a sliding groove is provided on the bottom knife, the fixing part includes a threaded rod and a clamping part, the threaded rod is threadedly connected to the fixing hole, the clamping part is fixed to the end of the threaded rod away from the fixing hole, and when the threaded rod is threadedly connected to the fixing hole, the clamping part presses the bottom knife to the mounting plate and fixes it.

[0010] By adopting the above technical solution, the installation of the bed knife and the mounting plate is facilitated.

[0011] Optionally, a stabilizing boss is provided on the mounting plate, and the stabilizing boss is provided at an end away from the blade of the bottom knife. The mounting plate also includes a stabilizing screw, which is threadedly connected to the stabilizing boss, and one end of the stabilizing screw in the length direction abuts against the end of the bottom knife away from the blade.

[0012] By adopting the above technical solution, the stabilizing screw positions the bed knife so that when the fixing member is loosened, the bed knife is not easily moved by the ear cutting knife, thereby stabilizing the position of the bed knife.

[0013] Optionally, the length direction of the stabilizing boss is parallel to the edge of the blade, and two stabilizing screws are provided, and the stabilizing screws are threadedly connected to both ends of the length direction of the stabilizing boss.

[0014] By adopting the above technical solution, the arrangement of two stabilizing screws makes the positioning of the bed knife more stable compared with one stabilizing screw.

[0015] Optionally, the length direction of the stabilizing screw is parallel to the sliding direction of the mounting plate.

[0016] By adopting the above technical solution, the direction of the abutting force of the stabilizing screw on the bed knife is made more stable.

[0017] Optionally, a breaking knife is further included, which is fixed on the mounting plate. The breaking knife is located on the side of the bottom knife away from the ear cutting knife, the blade of the breaking knife faces the side of the ear cutting knife, and the blade of the breaking knife protrudes from the blade of the bottom knife.

[0018] By adopting the above technical solution, the breaking knife is fixed to the mounting plate as a whole, which facilitates the installation of the breaking knife.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. The bed knife is slidably mounted on the mounting plate and fixed in place by a fixing member. When the bed knife is worn, the entire bed knife can slide toward the end near the blade on the bed knife. This allows the ear cutter to maintain good shearing force with the blade of the bed knife, making maintenance easier and eliminating the need to replace parts, thus reducing maintenance costs.

[0021] 2. The stabilizing screw positions the bed knife so that when the fixings are loosened, the bed knife is not easily moved by the ear cutting knife, thus stabilizing the position of the bed knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 2 is an overall schematic diagram of a bottom knife structure for cutting cardboard edges according to an embodiment.

[0023] Figure 2 This is a partial disassembled view of the cooperation between the bed knife structure and the cutter for cardboard trimming in the embodiment.

[0024] Explanation of the accompanying reference numerals: 1. Mounting plate; 2. Bottom knife; 21. Blade; 3. Fixing piece; 31. Threaded rod; 32. Pressing portion; 4. Fixing hole; 5. Sliding groove; 6. Stabilizing boss; 7. Stabilizing screw; 8. Pull-off knife; 9. Ear cutting knife. DETAILED DESCRIPTION

[0025] The present application is further described in detail below with reference to the accompanying drawings.

[0026] The embodiment of the present application discloses a bottom knife structure for cutting the edge of a cardboard. Figure 1 The bed knife structure for cardboard trimming includes a mounting plate 1, a bed knife 2 arranged on the top surface of the mounting plate 1, and a fixing member 3 for fixing the bed knife 2. The bed knife 2 is slidably arranged on the mounting plate 1, and the sliding direction of the bed knife 2 is to slide away from or close to the end where the blade 21 of the bed knife 2 is located.

[0027] The mounting plate 1 has a fixing hole formed in it, and the bedknife 2 has a sliding groove 5 formed in it. The sliding groove 5 extends from one end of the bedknife 2 to the other end where the blade 21 is located. The fixing member 3 includes a threaded rod 31 and a clamping portion 32 fixed to one end of the threaded rod 31. The other end of the threaded rod 31 is threadedly connected to the fixing hole. When the threaded rod 31 passes through the sliding groove 5 and is threaded into the fixing hole, the clamping portion 32 presses the bedknife 2 against the mounting plate 1, securing it.

[0028] A stabilizing boss 6 is integrally formed on the top surface of the mounting plate 1, located at the end away from the blade 21 of the bedknife 2. A stabilizing screw 7 is threadedly connected to the stabilizing boss 6, one end of which abuts the end of the bedknife 2 away from the blade 21. The length of the stabilizing screw 7 is parallel to the sliding direction of the mounting plate 1.

[0029] The length direction of the stabilizing boss 6 is parallel to the edge of the blade 21 . Two stabilizing screws 7 are provided, and the two stabilizing screws 7 are threadedly connected to both ends of the stabilizing boss 6 in the length direction.

[0030] A breaking knife 8 is also fixed on the mounting plate 1 , and the breaking knife 8 is located on the side of the bottom knife 2 away from the ear cutting knife 9 , with the blade 21 of the breaking knife 8 facing the side of the ear cutting knife 9 , and the blade 21 of the breaking knife 8 protrudes from the blade 21 of the bottom knife 2 .

[0031] The implementation principle of a bottom knife structure for cardboard trimming in an embodiment of the present application is as follows: when in use, the ear cutting knife 9 rotates, and the ear cutting knife 9 cooperates with the bottom knife 2 to cut the edge strips cut off the cardboard, and the edge strips fall into the air suction port. When the width of the edge strips needs to be changed, the driving structure drives the bottom knife structure for cardboard trimming to slide, and the pulling knife 8 pulls the edge strips toward the side away from the cardboard, and the cardboard processing of the next order can be switched.

[0032] When the shearing force of the ear cutting knife 9 and the bed knife 2 is insufficient, loosen the threaded rod 31, slide the bed knife 2 toward its blade 21, tighten the threaded rod 31, and the tightening portion presses the bed knife 2 against the mounting plate 1. Then, screw the two stabilizing screws 7 so that the end of the stabilizing screws 7 abuts against the side of the bed knife 2 away from the blade 21, so that the shearing force of the ear cutting knife 9 and the bed knife 2 is restored.

[0033] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A bottom knife structure for cutting cardboard edges, comprising a mounting plate (1) and a bottom knife (2) arranged on the mounting plate (1), characterized in that: The bottom knife (2) is slidingly arranged on the mounting plate (1), and the sliding direction of the bottom knife (2) is sliding away from or close to the end where the blade (21) of the bottom knife (2) is located. The bottom knife (2) also includes a fixing member (3) for fixing the bottom knife (2) to the mounting plate (1).

2. The bottom knife structure for cardboard trimming according to claim 1, characterized in that: The mounting plate (1) is provided with a fixing hole (4), the bottom knife (2) is provided with a sliding groove (5), the fixing member (3) comprises a threaded rod (31) and a pressing portion (32), the threaded rod (31) is threadedly connected to the fixing hole (4), the pressing portion (32) is fixed to the end of the threaded rod (31) away from the fixing hole (4), and when the threaded rod (31) is threadedly connected to the fixing hole (4), the pressing portion (32) presses the bottom knife (2) to the mounting plate (1) and fixes it.

3. The bottom knife structure for cardboard trimming according to claim 2, characterized in that: The mounting plate (1) is provided with a stabilizing boss (6), which is arranged at an end away from the blade (21) of the bottom knife (2), and further comprises a stabilizing screw (7), which is threadedly connected to the stabilizing boss (6), and one end of the stabilizing screw (7) in the length direction abuts against the end of the bottom knife (2) away from the blade (21).

4. The bottom knife structure for cardboard trimming according to claim 3, characterized in that: The length direction of the stabilizing boss (6) is parallel to the edge of the blade (21), and two stabilizing screw rods (7) are provided. The stabilizing screw rods (7) are threadedly connected to both ends of the length direction of the stabilizing boss (6).

5. The bottom knife structure for cardboard trimming according to claim 3, characterized in that: The length direction of the stabilizing screw (7) is parallel to the sliding direction of the mounting plate (1).

6. The bottom knife structure for cardboard trimming according to claim 1, characterized in that: The invention also includes a breaking knife (8), which is fixed on the mounting plate (1). The breaking knife (8) is located on the side of the bottom knife (2) away from the ear cutting knife (9), and the blade (21) of the breaking knife (8) faces the side of the ear cutting knife (9). The blade (21) of the breaking knife (8) protrudes from the blade (21) of the bottom knife (2).

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