Positioning mechanism for cutting paper

Abstract

A kind of positioning mechanism for paper cutting, including truss, beam is equipped on truss by forward moving module assembly, mounting seat is equipped on beam by lifting module assembly, the bottom of mounting seat is connected with mounting bracket, and mounting seat is equipped with transposition driving unit for driving mounting bracket rotation.The mounting bracket is equipped with clamping assembly for clamping paper stack;The clamping assembly includes clamping motor, slide rail and first positioning plate;The clamping motor is connected with screw rod, and the free end of screw rod is equipped on mounting bracket by bearing seat.Two thread sections with opposite rotation direction are provided on screw rod, the first positioning plate has two, two first positioning plates are oppositely arranged and respectively connected with two thread sections, the slide rail is fixed on mounting bracket, and the first positioning plate is equipped with sliding block with the slide rail sliding connection.Compared with prior art, the present application can automatically complete the rotation of paper stack, replace the traditional manual paper stack operation, ensure that paper cutting process quality is stable and uniform.

Description

Technical Field

[0001] This utility model belongs to the technical field of paper cutting devices, specifically relating to a positioning mechanism for paper cutting. Background Technology

[0002] In the paper processing industry, multi-sided cutting of stacked paper (paper stacks) is an essential process for precise shaping. Currently, paper cutting devices that realize this process usually have automated paper pressing and cutting functions. However, in the paper stack rotation and repositioning process, existing technology still mainly relies on manual operation. After cutting one side, the operator manually pushes the paper stack to rotate 90 degrees and then pushes it back into the cutting station for the next round of positioning and cutting.

[0003] This manual-based operation mode suffers from poor cutting quality stability. The precision of manual rotation and repositioning cannot be guaranteed, and even small angular deviations and positional errors will accumulate directly, resulting in quality problems such as non-perpendicular edges, unequal diagonals, and inconsistent sizes in the cut paper stacks, making it difficult to improve the product qualification rate. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0005] A paper-cutting positioning mechanism includes a truss, on which a crossbeam is assembled via a forward-moving mold, and a mounting base is assembled on the crossbeam via a lifting mold. A mounting frame is connected to the bottom of the mounting base, and a shifting drive unit for driving the mounting frame to rotate is mounted on the mounting base. A clamping assembly for holding paper stacks is mounted on the mounting frame; the clamping assembly includes a clamping motor, a slide rail, and a first positioning plate; the clamping motor is connected to a screw, and the free end of the screw is mounted on the mounting frame via a bearing seat. The screw has two threaded sections with opposite directions of rotation. There are two first positioning plates, which are arranged facing each other and connected to the two threaded sections respectively. The slide rail is fixed to the mounting frame, and a slider that is slidably connected to the slide rail is provided on the first positioning plate.

[0006] As a preferred embodiment of the paper-cutting positioning mechanism, the clamping assembly further includes a second positioning plate, which is disposed on the mounting frame. The second positioning plate and the two first positioning plates together form a clamping area for positioning the paper stack from three sides.

[0007] As a preferred embodiment of a paper-cutting positioning mechanism, the first and second positioning plates are provided with rubber-made paper-pushing components on the sides facing the paper stack.

[0008] In a preferred embodiment of a paper-cutting positioning mechanism, a wear-resistant plate is installed at the bottom of the first positioning plate and the second positioning plate, and the bottom of the paper-pushing structure is lower than the bottom of the wear-resistant plate.

[0009] In a preferred embodiment of a paper-cutting positioning mechanism, both the bottom of the first positioning plate and the second positioning plate are equipped with universal balls, and the bottom of the paper-pushing structure is lower than the bottom of the universal balls.

[0010] Compared with existing technologies, this application has the following beneficial technical effects: it can automatically complete the rotation of paper stacks, replacing the traditional manual paper stack flipping operation. It avoids the uncertainty caused by manual operation and ensures that the paper stack maintains a precise posture during each repositioning and positioning, thereby making the subsequent paper pressing and cutting processes stable and consistent in quality. Attached Figure Description

[0011] Figure 1 Three-dimensional paper cutting device Figure 1 .

[0012] Figure 2 Three-dimensional paper cutting device Figure 2 .

[0013] Figure 3 This is a three-dimensional view of a portal frame.

[0014] Figure 4 This is a 3D view of the positioning mechanism.

[0015] Figure 5 This is the front view of the clamping component.

[0016] Figure 6 This is a perspective view of a clamping assembly in one embodiment.

[0017] Figure 7 This is a perspective view of the clamping assembly in another embodiment.

[0018] The following is an explanation of the reference numerals in the attached figures:

[0019] 100. Bearing mechanism;

[0020] 200. Gantry frame; 210. Paper pressing mechanism; 220. Paper cutting mechanism;

[0021] 300. Positioning mechanism; 310. Truss; 311. Forward moving module; 312. Crossbeam; 313. Lifting module; 314. Mounting base; 315. Mounting frame; 316. Positioning drive unit; 320. Clamping assembly; 321. Clamping motor; 322. Screw; 323. Slide rail; 324. First positioning plate; 325. Second positioning plate; 326. Wear-resistant plate; 327. Paper pushing structure; 328. Universal ball. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] In the following embodiments, the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Reference Figures 1 to 5 A paper cutting device includes a carrying mechanism 100, a gantry frame 200, and a positioning mechanism 300. The carrying mechanism 100 is used to carry a stack of paper in a horizontal position. The gantry frame 200 is equipped with a paper pressing mechanism 210 and a paper cutting mechanism 220. The paper pressing mechanism 210 is used to compact the edge of the paper stack to be cut before cutting to prevent the paper from wrinkling or shifting during cutting. The paper cutting mechanism 220 is used to cut the compacted paper stack.

[0026] The positioning mechanism 300 includes a truss 310, on which a crossbeam 312 is mounted via a forward moving module 311, and a mounting base 314 is mounted on the crossbeam 312 via a lifting module 313. A mounting frame 315 is connected to the bottom of the mounting base 314, and a clamping assembly 320 for clamping paper stacks is mounted on the mounting frame 315. A shifting drive unit 316 for driving the mounting frame 315 to rotate is mounted on the mounting base 314.

[0027] The clamping assembly 320 includes a clamping motor 321, a slide rail 323, and a first positioning plate 324. The clamping motor 321 is connected to a screw 322, the free end of which is mounted on a mounting frame 315 via a bearing seat. The screw 322 has two threaded sections with opposite directions of rotation. There are two first positioning plates 324, which are arranged facing each other and connected to the two threaded sections respectively. The slide rail 323 is fixed to the mounting frame 315, and the first positioning plate 324 has a slider that is slidably connected to the slide rail 323. By using the clamping motor 321 to drive the screw 322 with reverse threads, the two first positioning plates 324 can be driven to move towards or away from each other synchronously, realizing synchronous, uniform, and automatic clamping and releasing of both sides of the paper stack.

[0028] Furthermore, the clamping assembly 320 also includes a second positioning plate 325, which is located on the side of the mounting frame 315 away from the gantry frame 200. The second positioning plate 325 and the two first positioning plates 324 together form a clamping area for positioning the paper stack from three sides, so that the paper stack is firmly limited during the clamping process and effectively prevents displacement.

[0029] As one embodiment of this application, reference is made to Figure 6 Wear-resistant plates 326 are installed at the bottom of the first positioning plate 324 and the second positioning plate 325. The wear-resistant plates 326 effectively reduce direct friction and wear between the bottom of the first and second positioning plates 325 and the surface of the support platform (or turntable), reducing the frequency and cost of equipment maintenance. Rubber paper-pushing components 327 are provided on the sides of the first and second positioning plates 324 and 325 facing the paper stack. The bottom of the paper-pushing component 327 is lower than the bottom of the wear-resistant plate 326. When the positioning plates contact the support platform, the bottom of the paper-pushing component 327 will slightly deform to ensure close contact between the paper-pushing component 327 and the support platform, preventing paper from entering the gap between the paper-pushing component 327 and the support platform during paper pushing. Furthermore, the rubber paper-pushing component 327 is soft and will not scratch or damage the paper surface when clamping and pushing the paper stack, ensuring the appearance quality of the finished paper.

[0030] As another embodiment of this application, reference is made to Figure 7The first positioning plate 324 and the second positioning plate 325 are equipped with universal balls 328 at their bottoms. By assembling universal balls 328 at the bottom of each positioning plate, the friction mode changes from sliding friction to rolling friction when the mechanism moves with the paper stack on the support platform. This greatly reduces the moving resistance, making the drive more effortless and stable, and more importantly, avoiding wear and scratches on the paper at the bottom of the paper stack caused by sliding friction. The first positioning plate 324 and the second positioning plate 325 have rubber paper-pushing components 327 on their sides facing the paper stack. The bottom of the paper-pushing component 327 is lower than the bottom of the universal balls 328. When the positioning plate contacts the support platform, the bottom of the paper-pushing component 327 will slightly deform to ensure close contact between the paper-pushing component 327 and the support platform, preventing paper from entering the gap between the paper-pushing component 327 and the support platform during paper pushing.

[0031] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A positioning mechanism for paper cutting, characterized in that, The system includes a truss (310), on which a crossbeam (312) is mounted via a forward-moving module (311), and on which a mounting base (314) is mounted via a lifting module (313). The bottom of the mounting base (314) is connected to a mounting frame (315), and a shifting drive unit (316) for driving the mounting frame (315) to rotate is mounted on the mounting base (314). The mounting frame (315) is equipped with a clamping assembly (320) for clamping paper stacks; the clamping assembly (320) includes a clamping motor (321), a slide rail (323) and a first positioning plate (324); the clamping motor (321) is connected to a screw (322), and the free end of the screw (322) is mounted on the mounting frame (315) through a bearing seat; the screw (322) is provided with two threaded sections with opposite directions of rotation, there are two first positioning plates (324), the two first positioning plates (324) are arranged facing each other and respectively connected to the two threaded sections, the slide rail (323) is fixed on the mounting frame (315), and the first positioning plate (324) is provided with a slider that is slidably connected to the slide rail (323).

2. The positioning mechanism for paper cutting according to claim 1, characterized in that, The clamping assembly (320) further includes a second positioning plate (325), which is mounted on the mounting frame (315). The second positioning plate (325) together with the two first positioning plates (324) form a clamping area for positioning the paper stack from three sides.

3. A positioning mechanism for paper cutting according to claim 2, characterized in that, The first positioning plate (324) and the second positioning plate (325) are provided with rubber paper pushing components (327) on the side facing the paper stack.

4. A positioning mechanism for paper cutting according to claim 3, characterized in that, The first positioning plate (324) and the second positioning plate (325) are fitted with wear-resistant plates (326) at their bottoms, and the bottom of the paper pushing structure (327) is lower than the bottom of the wear-resistant plates (326).

5. A positioning mechanism for paper cutting according to claim 3, characterized in that, The bottom of the first positioning plate (324) and the second positioning plate (325) are both equipped with universal balls (328), and the bottom of the paper pushing structure (327) is lower than the bottom of the universal balls (328).

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