Slitting type circular knife

Abstract

The utility model discloses a slitting type circular knife, and relates to the technical field of slitting equipment, the slitting type circular knife comprises a knife roll, a plurality of annular blocks are arranged on the outer surface of the knife roll in a sliding mode, the outer surface of each annular block is fixedly sleeved with a circular knife body, a first cavity is formed in the knife roll, and a second cavity is formed in the knife roll. A plurality of square holes are symmetrically formed in the side wall of the first cavity, a fixing block is slidably connected into each square hole in a sleeved mode, each annular block is fixed to the outer surface of a knife roll through the corresponding two fixing blocks, an adjusting mechanism is arranged in the cavity, each fixing block moves through the adjusting mechanism, and the adjusting mechanism is arranged on the outer surface of the knife roll. And a springback mechanism is arranged on the outer surface of each fixing block in a sliding manner. Each fixing block is moved out of the interior of the corresponding inserting groove, then the annular block can move left and right, and therefore the circular knife body can be conveniently taken down from the knife roller to be ground.

Description

Technical Field

[0001] The utility model relates to the technical field of slitting equipment, and particularly relates to a slitting circular knife. Background Art

[0002] Currently, in the process of manufacturing packaging boxes, since the packaging box cardboard is in a whole-board structure, it is necessary to cut the packaging box cardboard into fixed sizes and then manufacture the packaging boxes. Currently, in the industry, slitting is usually carried out by a slitter.

[0003] Among them, an upper circular and lower toothed slitting knife device with the publication number of CN215548948U relates to the technical field of slitting equipment, and includes a workbench, a power box, a driving shaft, a driving gear, a positioning ring, a limiting sleeve, a supporting ring, a circular slitting knife, a toothed slitting knife, a lead screw nut, a driven gear, and a fan blade.

[0004] However, after long-term use of the existing upper circular and lower toothed slitting knife device, the circular knife will be worn. In addition, since the circular knife is usually fixed on the outer surface of the knife roller, it is difficult for workers to disassemble it and grind it sharp. Summary of the Utility Model

[0005] In view of the above problems existing in the existing upper circular and lower toothed slitting knife device, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a slitting circular knife, which solves the problems that after long-term use of the existing upper circular and lower toothed slitting knife device, the circular knife will be worn, and since the circular knife is usually fixed on the outer surface of the knife roller, it is difficult for workers to disassemble it and grind it sharp.

[0007] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0008] A slitting circular knife includes a knife roller. A plurality of annular blocks are slidably arranged on the outer surface of the knife roller. A circular knife body is fixedly sleeved on the outer surface of each annular block. A first cavity is opened inside the knife roller. A plurality of square holes are symmetrically opened on the side wall of the first cavity. A fixing block is slidably sleeved inside each square hole. Each annular block is fixed to the outer surface of the knife roller through two corresponding fixing blocks. An adjusting mechanism is arranged inside the cavity. Each fixing block moves through the adjusting mechanism. A return mechanism is slidably arranged on the outer surface of each fixing block. Two positioning strips are symmetrically and fixedly connected to the outer surface of the knife roller. A second cavity is opened inside each of the two positioning strips. A positioning mechanism is arranged inside each second cavity.

[0009] Preferably, the adjusting mechanism includes a cylinder, a connecting rod, and a plurality of trapezoidal blocks. The cylinder is fixedly connected to the inside of the first cavity, the connecting rod is fixedly connected to the output end of the cylinder, and each trapezoidal block is fixedly sleeved on the rod wall of the connecting rod and is respectively in contact with the corresponding two fixing blocks.

[0010] Preferably, the rebounding mechanism includes a plurality of baffles and a plurality of first springs. Each baffle is fixedly sleeved on the outer surface of the corresponding fixing block, and each first spring is slidably sleeved on the outer surface of the corresponding fixing block.

[0011] Preferably, the positioning mechanism includes a plurality of positioning blocks, a plurality of pressing plates, and a plurality of second springs. A through hole is formed in the upper surface of each cavity, each positioning block is slidably disposed inside the corresponding through hole, each pressing plate is fixedly connected to the lower surface of the corresponding positioning block, and each second spring is fixedly connected to the lower surface of the corresponding positioning block.

[0012] Preferably, two slots are symmetrically formed inside the inner side of each annular block, and the two slots respectively match the corresponding fixing blocks.

[0013] Preferably, a positioning groove is formed inside the inner side of each annular block, and each positioning groove respectively matches the corresponding positioning strip.

[0014] Preferably, an inclined surface is provided on one side of each fixing block, and each inclined surface respectively matches the corresponding trapezoidal block.

[0015] Preferably, one end of each positioning block is hemispherical.

[0016] Preferably, a fixing hole matching the connecting rod is formed on one side of each trapezoidal block.

[0017] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0018] 1. In the present utility model, by removing each fixing block from the inside of the corresponding slot, the annular block can then be moved left and right, thus facilitating the removal of the circular knife body from the cutter roller for grinding.

[0019] 2. In the present utility model, by sleeving the annular block on the outer surface of the cutter roller, then starting the cylinder to move the connecting rod, and then each trapezoidal block respectively presses the corresponding fixing block and makes each fixing block respectively move into the corresponding slot, so that the annular block can be fixed, that is, the circular knife body is fixed. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is of the present utility model Figure 1 cross-sectional view;

[0023] Figure 3 is of the present utility model Figure 1 top-down cross-sectional view;

[0024] Figure 4 is of the present utility model Figure 3 enlarged schematic view of part A;

[0025] Figure 5 is of the present utility model Figure 1 three-dimensional structural schematic view of the annular block in it.

[0026] Explanation of reference numerals:

[0027] 1, cutter roller; 2, annular block; 3, circular knife body; 4, fixed block; 5, positioning strip; 6, cylinder; 7, connecting rod; 8, trapezoidal block; 9, second spring; 10, baffle; 11, pressing plate; 12, first spring; 13, positioning block. Specific embodiments

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0029] An embodiment of the present utility model discloses a slitting circular knife.

[0030] Embodiment 1

[0031] Refer to Figures 1-5A slitting circular knife comprises a knife roller 1, a plurality of annular blocks 2 are slidably arranged on the outer surface of the knife roller 1, a circular knife body 3 is fixedly sleeved on the outer surface of each annular block 2, a first cavity is opened inside the knife roller 1, a plurality of square holes are symmetrically opened on the side wall of the first cavity, a fixed block 4 is slidably sleeved inside each square hole, each annular block 2 is fixed to the outer surface of the knife roller 1 through two corresponding fixed blocks 4, an adjusting mechanism is arranged inside the cavity, each fixed block 4 is moved by the adjusting mechanism, the adjusting mechanism comprises a cylinder 6, a connecting rod 7 and a plurality of trapezoidal blocks 8, the cylinder 6 is fixedly connected to the inside of the first cavity, the connecting rod 7 is fixedly connected to the output end of the cylinder 6, each trapezoidal block 8 is fixedly sleeved on the rod wall of the connecting rod 7 and respectively fits with the corresponding two fixed blocks 4, and two slots are symmetrically opened on the inner side of each annular block 2, and the two slots match the corresponding fixed blocks 4 respectively.

[0032] The annular block 2 is put on the outer surface of the knife roller 1, and then the cylinder 6 is started to make the connecting rod 7 move. Then each trapezoidal block 8 squeezes the corresponding fixed block 4 and moves each fixed block 4 to the inside of the corresponding slot, so that the annular block 2 can be fixed, that is, the circular knife body 3 is fixed.

[0033] Reference Figures 1-2 A rebound mechanism is slidably provided on the outer surface of each fixed block 4, and the rebound mechanism includes a plurality of baffles 10 and a plurality of first springs 12. Each baffle 10 is fixedly sleeved on the outer surface of the corresponding fixed block 4, and each first spring 12 is slidably sleeved on the outer surface of the corresponding fixed block 4.

[0034] When the circular knife body 3 needs to be disassembled, the cylinder 6 is started and contracted, and then each trapezoidal block 8 can be reset. Then, the rebound force of the first spring 12 can be used to push the corresponding baffle 10 to move, so that the fixing block 4 can be moved out from the inside of the corresponding slot.

[0035] Reference Figures 1-4 Two positioning strips 5 are symmetrically fixedly connected to the outer surface of the knife roller 1, and a second cavity is opened inside the two positioning strips 5. A positioning mechanism is arranged inside each second cavity, and the positioning mechanism includes a plurality of positioning blocks 13, a plurality of pressure plates 11 and a plurality of second springs 9. A through hole is opened on the upper surface of each cavity, and each positioning block 13 is slidably arranged inside the corresponding through hole, and each pressure plate 11 is fixedly connected to the lower surface of the corresponding positioning block 13, and each second spring 9 is fixedly connected to the lower surface of the corresponding positioning block 13. A positioning groove is opened on the inner side of each annular block 2, and each positioning groove matches the corresponding positioning strip 5.

[0036] The positioning bar 5 is used to enable the annular block 2 to slide left and right only and not rotate. Subsequently, the positioning block 13 can be used to block the annular block 2. At this time, each slot moves to one end of the corresponding fixed block 4 respectively, so as to facilitate the fixation of the annular block 2. At this time, if the positioning block 13 is pressed, the annular block 2 can be moved to one side of the next positioning block 13, thus facilitating the installation of multiple annular blocks 2.

[0037] Embodiment 2

[0038] On the basis of Embodiment 1, referring to Figure 2 , a bevel surface is provided on one side of each fixed block 4, and each bevel surface is respectively matched with the corresponding trapezoidal block 8.

[0039] The bevel surface is used to enable each fixed block 4 to be better squeezed.

[0040] Embodiment 3

[0041] On the basis of Embodiment 1, referring to Figure 1 and Figures 3-4 , one end of each positioning block 13 is hemispherical.

[0042] Because one end of the positioning block 13 is hemispherical, excessive friction between one end thereof and the inner wall of the annular block 2 is prevented.

[0043] Embodiment 4

[0044] On the basis of Embodiment 1, referring to Figure 2 , a fixing hole matching the connecting rod 7 is provided on one side of each trapezoidal block 8.

[0045] Each fixing hole is used to facilitate the fixation of each trapezoidal block 8 on the rod wall of the connecting rod (7).

[0046] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A slitting circular knife, comprising a knife roller (1), characterized in that: The outer surface of the knife roller (1) is slidably provided with a plurality of annular blocks (2), and the outer surface of each of the annular blocks (2) is fixedly sleeved with a circular knife body (3). A first cavity is provided inside the knife roller (1), and a plurality of square holes are symmetrically provided on the side wall of the first cavity, and a fixed block (4) is slidably sleeved inside each of the square holes. Each of the annular blocks (2) is fixed to the outer surface of the knife roller (1) by two corresponding fixed blocks (4). An adjustment mechanism is provided inside the cavity, and each of the fixed blocks (4) is moved by the adjustment mechanism. A rebound mechanism is slidably provided on the outer surface of each of the fixed blocks (4). Two positioning strips (5) are symmetrically fixedly connected to the outer surface of the knife roller (1), and a second cavity is provided inside the two positioning strips (5), and a positioning mechanism is provided inside each of the second cavities.

2. The slitting circular knife according to claim 1, characterized in that: The regulating mechanism comprises a cylinder (6), a connecting rod (7) and a plurality of trapezoidal blocks (8); the cylinder (6) is fixedly connected to the interior of the first cavity; the connecting rod (7) is fixedly connected to the output end of the cylinder (6); each of the trapezoidal blocks (8) is fixedly sleeved on the rod wall of the connecting rod (7) and is respectively fitted with two corresponding fixed blocks (4).

3. The slitting circular knife according to claim 1, characterized in that: The rebound mechanism comprises a plurality of baffles (10) and a plurality of first springs (12), each of the baffles (10) being fixedly sleeved on the outer surface of a corresponding fixed block (4), and each of the first springs (12) being slidably sleeved on the outer surface of a corresponding fixed block (4).

4. The slitting circular knife according to claim 1, characterized in that: The positioning mechanism comprises a plurality of positioning blocks (13), a plurality of pressure plates (11) and a plurality of second springs (9); a through hole is provided on the upper surface of each cavity; each positioning block (13) is slidably arranged inside the corresponding through hole; each pressure plate (11) is fixedly connected to the lower surface of the corresponding positioning block (13); and each second spring (9) is fixedly connected to the lower surface of the corresponding positioning block (13).

5. The slitting circular knife according to claim 1, characterized in that: Two slots are symmetrically provided on the inner side of each annular block (2), and the two slots are matched with corresponding fixed blocks (4) respectively.

6. The slitting circular knife according to claim 1, characterized in that: A positioning groove is provided on the inner side of each of the annular blocks (2), and each of the positioning grooves matches with a corresponding positioning strip (5).

7. The slitting circular knife according to claim 2, characterized in that: A slope is provided on one side of each of the fixing blocks (4), and each of the slopes matches a corresponding trapezoidal block (8).

8. The slitting circular knife according to claim 4, characterized in that: One end of each positioning block (13) is hemispherical.

9. The slitting circular knife according to claim 2, characterized in that: A fixing hole matching the connecting rod (7) is provided on one side of each trapezoidal block (8).

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