Paper positioning device

Abstract

The utility model discloses a paper positioning device, and relates to the technical field of paper processing, and the scheme is that the paper positioning device comprises a bearing platform; the pivot seat is installed on the bearing platform, at least two positioning channels are formed in the pivot seat in the circumferential direction, and the positioning channels extend outwards in a radial mode along the center of the pivot seat; the positioning base is mounted in the positioning channel, and the positioning base can be positioned at a preset position of the positioning channel; the positioning bracket is of a U-shaped structure, the positioning bracket is installed on the positioning base, an assembling opening is formed in the top end of the positioning bracket, and limiting through grooves communicating with the assembling opening are formed in the two sides of the positioning bracket correspondingly; the problem of interference between the positioning component and the cutting tool can be effectively reduced, and the smoothness of cutting operation is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper processing technical field, concretely relates to a paper positioning device. BACKGROUND

[0002] Paper processing cutting is very key, because different scenes require different paper size and shape, cutting can meet the demand, improve production efficiency, and also remove defects to ensure quality. Paper processing field covers multiple links, first pulping separates fibers, then papermaking forms, surface treatment improves performance, combines various printing technologies to present graphics and text, and finally makes finished products through cutting, binding and other post-processing.

[0003] According to the authorized announcement number (CN222697356U) batch exposure of a cutting machine positioning mechanism frame, including cutting machine pedestal, the top of cutting machine pedestal is provided with cutting device, the top of cutting machine pedestal is provided with moving mechanism, the top of moving mechanism is provided with placing plate, the rear part of placing plate top surface is fixedly connected with back baffle. In the paper cutting process, the front baffle positions the front end of the paper longitudinally, the extrusion plate presses on the top to realize vertical positioning, and the left and right side baffles constrain horizontally. Four-way cooperation completes the positioning of the four sides of the paper, effectively eliminates the risk of deviation, and lays a foundation for cutting operation.

[0004] The structure disclosed in the patent has defects in actual application, specifically as follows, the structure uses front baffle, extrusion plate, back baffle and two side baffles to constrain and position the paper stack. However, due to the relatively large volume of the front baffle, back baffle, extrusion plate and two side baffles, combined with the large number of positioning components, these positioning components are prone to interfere with the cutting tool or other components of the equipment during paper cutting operation, which seriously hinders the smooth development of cutting work. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a paper positioning device, which can solve the problem that the positioning components in the prior art are prone to interfere with the cutting tool, causing frequent obstruction of cutting operation, and proposes a solution that can effectively reduce the interference problem between the positioning components and the cutting tool, and ensure the smoothness of cutting operation.

[0006] The utility model realizes the following technical scheme:

[0007] A paper positioning device includes: a support platform; a central base mounted on the support platform, the central base having at least two positioning channels along its circumference, the positioning channels extending radially outward from the center of the central base; a positioning base installed within the positioning channels, the positioning base being able to be positioned at a preset position within the positioning channels; a U-shaped positioning bracket mounted on the positioning base, the positioning bracket having an assembly opening at its top, and limiting slots communicating with the assembly opening on both sides of the positioning bracket; a limiting component installed inside the limiting slots; and a positioning shaft passing through the assembly opening, the positioning shaft having a positioning component installed at one end inside the positioning bracket, and multiple limiting slots on both sides of the positioning shaft along its extension direction.

[0008] Furthermore, in this utility model, the aforementioned central base is provided with four positioning channels along the circumferential direction, and the four positioning channels are equidistantly distributed around the central base.

[0009] Furthermore, in this utility model, the aforementioned limiting component includes a reset spring and a limiting pin; the reset spring is fitted onto the outside of the limiting pin and installed inside the limiting through groove, one end of the reset spring is connected to the inner wall of the limiting through groove, and the other end of the reset spring is connected to the outer wall of the limiting pin; wherein, the limiting pin can be engaged into the limiting slot under the action of the reset spring.

[0010] Furthermore, in this utility model, the end of the aforementioned limiting pin near the limiting slot is provided with a guide slope; when the positioning bracket moves internally along the positioning axis, the guide slope can guide and cooperate with the limiting slot.

[0011] Furthermore, in this utility model, the positioning component includes a positioning pressure plate and a telescopic shaft; the positioning shaft has a hollow structure, and a telescopic shaft is installed inside the positioning shaft. The positioning shaft and the telescopic shaft are connected by a thread, and the positioning pressure plate is rotatably installed at the end of the telescopic shaft.

[0012] Furthermore, in this utility model, a guide body is installed on the outer wall of the positioning plate, and a guide channel is opened on the inner side of the positioning bracket along the extension direction, with the guide body installed inside the guide channel.

[0013] Furthermore, in this utility model, the above also includes a drive assembly that cooperates with the positioning base. The drive assembly includes a motor and a transmission shaft. The motor is installed inside the central base, and the output end of the motor is connected to the transmission shaft. The transmission shaft passes through the positioning base, and the transmission shaft and the positioning base are connected by a thread. The motor can control the positioning base to be positioned at a preset position in the positioning channel.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] 1. In traditional paper processing technology, positioning components are often large and numerous, easily interfering with cutting tools and key equipment components during cutting, severely slowing down the cutting process, reducing production efficiency, and increasing the defect rate. The paper positioning device of this application uses two compact U-shaped positioning brackets to position the paper stack. In trimming and other cutting stages, the positioning brackets are smaller than the paper strips to be trimmed, avoiding interference at the source and ensuring efficient and smooth cutting.

[0016] 2. The positioning shaft and the telescopic shaft are connected by a threaded connection. When the operator rotates the telescopic shaft, based on the threaded transmission principle, the telescopic shaft can drive the positioning pressure plate to perform stepless adjustment. This design can perform clamping and positioning operations on paper stacks of different thicknesses, significantly improving the device's adaptability to changes in paper thickness and ensuring efficient and reliable paper positioning in various paper processing scenarios. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 A perspective view of a paper positioning device;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 A longitudinal sectional view of a paper positioning device;

[0021] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0022] Figure 5 This is a sectional view after the positioning shaft is connected to the positioning bracket;

[0023] Figure 6 This is a sectional view after the telescopic shaft and the positioning shaft are connected.

[0024] The attached diagram shows the markings and corresponding component names:

[0025] 1-Bearing platform, 2-Central seat, 3-Positioning bracket, 4-Assembly port, 5-Limiting through slot, 6-Positioning shaft, 7-Limiting pin, 8-Telescopic shaft, 9-Positioning pressure plate, 10-Positioning channel, 11-Motor, 12-Drive shaft, 13-Positioning base, 14-Limiting slot, 15-Limiting pin, 16-Reset spring, 17-Guide slope. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0027] Example

[0028] Please refer to Figures 1 to 4 This utility model provides a paper positioning device. It mainly consists of key components such as a support platform 1, a central base 2, a positioning base 13, a U-shaped positioning bracket 3, a limiting component, and a positioning shaft 6.

[0029] The support platform 1 serves as the fundamental support structure for the entire device, providing a stable bearing surface for the entire paper cutting process, ensuring the secure installation of all components and the stable placement of the paper stack during operation. The central support 2 is mounted on the support platform 1, serving both positioning and bearing functions. The central support 2 has at least two evenly spaced positioning channels 10 along its circumference, extending radially outward from the center of the central support 2. When only two positioning channels 10 are provided, they are generally arranged symmetrically on the left and right sides of the central support 2. The positioning base 13 is installed within the positioning channels 10, and can reciprocate along the extension direction of the positioning channels 10, positioning itself to a preset position to meet the positioning requirements of paper stacks of different sizes.

[0030] The U-shaped positioning bracket 3 is installed on the positioning base 13. The bottom of the U-shaped positioning bracket 3 is slightly lower than the working surface of the central base 2. This arrangement allows the paper stack to be smoothly and completely embedded inside the U-shaped positioning bracket 3, laying the foundation for subsequent positioning. By using two U-shaped positioning brackets 3 symmetrically arranged on the left and right, the paper stack can be effectively constrained from two mutually perpendicular directions, thereby achieving the positioning of the paper stack on the horizontal plane.

[0031] The positioning shaft 6 passes through the mounting opening 4 at the top of the positioning bracket 3 and can move inward or outward from the positioning bracket 3. When dealing with a thinner stack of paper, the positioning shaft 6 moves inward from the positioning bracket 3 to reduce the positioning thickness; while when dealing with a thicker stack of paper, the positioning shaft 6 moves outward from the positioning bracket 3 to increase the positioning thickness. Multiple limiting slots 14 are provided on both sides of the positioning shaft 6 along its extension direction, working in conjunction with limiting components installed in the limiting through slots 5. During the movement of the positioning shaft 6, the operator must first remove the limiting component from the current limiting slot 14 and move it into the limiting through slot 5. After the positioning shaft 6 moves the positioning component to a preset position suitable for the thickness of the paper stack, the limiting component is then inserted into the corresponding limiting slot 14. At this point, the positioning component can press and position the paper stack. By moving the positioning component up and down within the positioning bracket 3, it successfully adapts to paper stacks of different thicknesses.

[0032] It is worth mentioning that this device uses only two compact positioning brackets 3 to position the paper stack. In subsequent paper cutting processes, especially during edge trimming, the positioning brackets 3 will not interfere with the cutting equipment because their size is significantly smaller than the paper strips to be trimmed. Since this device is merely a positioning mechanism, production personnel can flexibly install the cutting equipment at a suitable location on the support platform 1 according to actual production needs. The central seat 2 is slidably connected to the support platform 1. Using common transmission components such as lead screws, the central seat 2 can be easily moved under the cutting equipment to carry out paper cutting operations. Considering that such sliding connections and transmission methods are common knowledge to those skilled in the art, their specific implementation details will not be elaborated here.

[0033] For example, four positioning channels 10 are equidistantly provided on the circumference of the central base 2, and these four positioning channels 10 are evenly distributed around the central base 2. Each positioning channel 10 is equipped with a positioning base 13, which can drive the positioning bracket 3 connected to it to make displacement adjustments along the direction of the positioning channel 10.

[0034] During operation, the four positioning brackets 3 work synchronously, applying positioning constraints from the front, back, left, and right sides of the paper stack. Simultaneously, the positioning shaft 6 cooperates with the positioning components to adjust the height of the paper stack (i.e., the vertical direction). In this way, through the coordinated action of the four positioning brackets 3, the positioning shaft 6, and the positioning components, omnidirectional positioning of the paper stack on all six sides (front, back, left, right, top, and bottom) is achieved.

[0035] This design utilizes a streamlined and compact positioning mechanism to efficiently achieve the positioning goal of the paper stack. Compared to traditional positioning methods, this design effectively avoids interference with the cutting equipment caused by a large number and size of positioning components, greatly improving the smoothness and stability of the paper cutting process and ensuring efficient production.

[0036] Please refer to Figure 5 In some embodiments of this application, the limiting component adopts a structure in which a return spring 16 and a limiting pin 7 work together. The return spring 16 tightly surrounds the limiting pin 7 and is installed inside the limiting through groove 5. One end of the return spring 16 is fixed to the inner wall of the limiting through groove 5, and the other end of the return spring 16 is connected to the outer wall of the limiting pin 7, ensuring stable cooperation between the two during operation. Driven by the elastic potential energy of the return spring 16, the limiting pin 7 can automatically engage with the limiting slot 14 of the positioning shaft 6, thereby effectively locking the position of the positioning shaft 6 and providing key support for the stable operation of the paper positioning device.

[0037] Specifically, under the continuous elastic force applied by the return spring 16, part of the structure of the limiting pin 7 will naturally extend to the inside of the assembly port 4. This creates favorable conditions for the subsequent positioning process. The positioning shaft 6 passes through the assembly port 4, and multiple limiting slots 14 are provided on both sides of the positioning shaft 6 along the axial direction. When the positioning shaft 6 moves to the predetermined position according to actual needs such as the thickness of the paper stack, the limiting pin 7 can be pushed into the corresponding limiting slot 14 under the push of the return spring 16, completing the positioning action of the positioning shaft 6. It is particularly worth mentioning that when two limiting pins 7 are simultaneously and respectively engaged in the corresponding limiting slots 14 on both sides of the positioning shaft 6, the positioning stability of the positioning shaft 6 can be significantly enhanced, greatly improving the positioning effect of the entire paper positioning device and ensuring the positional accuracy and stability of the paper stack during the positioning process.

[0038] It should be noted that the design of the limiting pin 7 fully considers ease of operation. Both ends of the limiting pin 7 extend outside the limiting slot 5. One end of the limiting pin 7 can accurately engage with the limiting slot 14, ensuring positioning accuracy. The other end of the limiting pin 7 is ergonomically designed, with a shape that is easy for operators to grip and apply force manually. When it is necessary to adjust the position of the positioning shaft 6 to accommodate stacks of paper of different thicknesses, the operator only needs to gently pull this end, and the limiting pin 7 can disengage from the limiting slot 14, effectively improving the ease of operation and practicality of the entire paper positioning device.

[0039] Please refer to Figure 5 In some embodiments of this application, when an operator begins positioning the paper stack, the positioning shaft 6 is moved inward toward the positioning bracket 3 to press the paper stack. During the downward movement of the positioning shaft 6, multiple limiting slots 14 evenly distributed on both sides of the positioning shaft 6 move downward synchronously. At this moment, the limiting slot 14 interacts with the corresponding limiting pin 7, and the top inner wall of the limiting slot 14 fits tightly with the guide slope 17 of the limiting pin 7, activating the guiding engagement mechanism. Based on mechanical principles, the guide slope 17 decomposes the pressure it bears into a component force in the direction of the limiting through groove 5. This component force can drive the limiting pin 7 to overcome the elastic restraint of the return spring 16 and smoothly disengage from the current limiting slot 14, thereby successfully releasing the limiting restriction on the positioning shaft 6.

[0040] As the positioning shaft 6 continues to move downwards, the second limiting slot 14 on it quickly reaches the position of the limiting pin 7. At this instant, the limiting pin 7, pushed by the spring force of the return spring 16, engages with the limiting slot 14. The downward movement of the positioning shaft 6 continues, and the subsequent limiting slots 14 and limiting pins 7 repeatedly cycle through the above guiding and engaging process until the positioning shaft 6 moves to the preset position, achieving the pressing and positioning of the paper stack. At this point, the limiting pin 7, under the action of the spring force of the return spring 16, engages with the corresponding limiting slot 14, effectively completing the entire positioning action.

[0041] Of particular note is the unidirectional limiting property of this structure. The guiding engagement between the limiting pin 7 and the limiting slot 14 is only triggered when the positioning shaft 6 moves downwards; when the positioning shaft 6 needs to move upwards, the operator must manually pull out the limiting pin 7 to unlock it. This structure can securely lock the paper stack during the cutting process, effectively preventing displacement. Simultaneously, when locking the paper, the operator only needs to control the positioning shaft 6 to move downwards, and the limiting pin 7 automatically completes the switching and positioning process, requiring no additional cumbersome operations. This greatly improves overall operational efficiency, providing extremely convenient and efficient support for paper positioning and subsequent cutting operations.

[0042] Please refer to Figure 6 In some embodiments of this application, the positioning component mainly consists of a positioning pressure plate 9 and a telescopic shaft 8. The positioning shaft 6 adopts a hollow structure design, and the telescopic shaft 8 is built into the positioning shaft 6. The two are connected by a threaded connection. The end of the telescopic shaft 8 is rotatably connected to the positioning pressure plate 9. The positioning pressure plate 9 is more flexible during operation and can adapt to the unevenness of the paper stack surface, effectively avoiding the positioning instability problem caused by the difference in the surface condition of the paper stack.

[0043] During the paper stack compaction operation, the initial compaction position is adjusted by moving the positioning shaft 6 relative to the assembly port 4. However, due to the somewhat discrete layout of the limiting slots 14 on both sides of the positioning shaft 6, continuous stepless adjustment of the positioning shaft 6's position is not possible. Therefore, after the initial adjustment, if more precise adjustment is required, the operator can achieve this by rotating the telescopic shaft 8 relative to the positioning shaft 6. Because the two are connected by a threaded transmission mechanism, the telescopic shaft 8 moves axially relative to the positioning shaft 6 during rotation. As the telescopic shaft 8 moves smoothly, the positioning pressure plate 9 connected to the end of the telescopic shaft 8 also moves, thereby providing more precise compaction and positioning of the paper stack, ultimately achieving stepless adjustment of the paper stack's compaction position.

[0044] In some embodiments of this application, the outer wall of the positioning plate 9 is fitted with a guide body, and simultaneously, a guide channel is formed on the inner side of the positioning bracket 3 along its axial direction. The guide body is precisely embedded in the guide channel, and the two constitute a sliding pair structure. When the positioning plate 9 performs an upward or downward movement, the guide body moves linearly along the channel trajectory. This guiding mechanism greatly enhances the stability and accuracy of the positioning plate 9 during vertical displacement by constraining the excess degrees of freedom of the positioning plate 9 during movement, and effectively reduces the positioning error caused by the shaking or offset of the positioning plate 9. The positioning plate 9 and the telescopic shaft 8 are connected by a rotational connection. During the rotation adjustment of the telescopic shaft 8, the positioning plate 9 can always maintain its initial posture and will not rotate synchronously with the rotation of the telescopic shaft 8.

[0045] Please refer to Figure 3 and Figure 4 In some embodiments of this application, a drive assembly cooperating with the positioning base 13 is provided. This assembly consists of a motor 11 and a drive shaft 12. The motor 11 is mounted inside the central base 2, and its output end is rigidly connected to the drive shaft 12. The drive shaft 12 passes through the positioning base 13, and the two are threaded together. When the motor 11 operates, the output rotational motion is converted via the drive shaft 12 into linear movement of the positioning base 13 along the positioning channel 10, thereby controlling the position of the positioning base 13 within the channel and improving the convenience and efficiency of the paper positioning operation.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A paper positioning device, characterized in that, include: Platform (1); A central seat (2) is installed on the bearing platform (1). The central seat (2) has at least two positioning channels (10) along the circumferential direction. The positioning channels (10) extend radially outward from the center of the central seat (2). Positioning base (13), the positioning base (13) is installed in the positioning channel (10), and the positioning base (13) can be positioned at a preset position in the positioning channel (10); The positioning bracket (3) has a U-shaped structure and is installed on the positioning base (13). The top of the positioning bracket (3) has an assembly port (4) and both sides of the positioning bracket (3) have limiting slots (5) that communicate with the assembly port (4). A limiting component is installed inside the limiting through groove (5); The positioning shaft (6) passes through the assembly port (4). A positioning component is installed at one end of the positioning shaft (6) inside the positioning bracket (3). Multiple limiting slots (14) are provided on both sides of the positioning shaft (6) along the extension direction.

2. The paper positioning device according to claim 1, characterized in that, The central base (2) has four positioning channels (10) along the circumferential direction, and the four positioning channels (10) are equally distributed around the central base (2).

3. The paper positioning device according to claim 1 or 2, characterized in that, The limiting component includes a return spring (16) and a limiting pin (7); The reset spring (16) is fitted onto the outside of the limiting pin (7), the reset spring (16) is installed inside the limiting through groove (5), one end of the reset spring (16) is connected to the inner wall of the limiting through groove (5), and the other end of the reset spring (16) is connected to the outer wall of the limiting pin (7). The limiting pin (7) can be engaged in the limiting slot (14) under the action of the reset spring (16).

4. The paper positioning device according to claim 3, characterized in that, The end of the limiting pin (7) near the limiting slot (14) is provided with a guide slope (17); When the positioning shaft (6) moves into the positioning bracket (3), the guide slope (17) can guide and cooperate with the limiting slot (14).

5. The paper positioning device according to claim 3, characterized in that, The positioning assembly includes a positioning pressure plate (9) and a telescopic shaft (8); The positioning shaft (6) is a hollow structure. The telescopic shaft (8) is installed inside the positioning shaft (6). The positioning shaft (6) and the telescopic shaft (8) are connected by a thread. The positioning pressure plate (9) is rotatably installed at the end of the telescopic shaft (8).

6. The paper positioning device according to claim 5, characterized in that, The outer wall of the positioning plate (9) is equipped with a guide body, and the inner side of the positioning bracket (3) is provided with a guide channel along the extension direction. The guide body is installed inside the guide channel.

7. The paper positioning device according to claim 1, characterized in that, It also includes a drive assembly that cooperates with the positioning base (13), the drive assembly including a motor (11) and a drive shaft (12); The motor (11) is installed on the inner side of the central seat (2), and the output end of the motor (11) is connected to the transmission shaft (12). The transmission shaft (12) passes through the positioning base (13), and the transmission shaft (12) and the positioning base (13) are connected by threads. The motor (11) can control the positioning base (13) to be positioned at a preset position in the positioning channel (10).

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