Adjustable pressure feeding mechanism of automatic feeding platen

Abstract

This utility model relates to the technical field of paper feeding and processing, and discloses an adjustable pressure feeding mechanism for an automatic feeding flatbed machine. It includes two parallel supports, with an adjusting rod between the lower parts of the supports. A sleeve is provided on one side of each support facing each other, and a connecting shaft is provided on one side of each sleeve. The connecting shaft passes through the supports and has an adjusting structure at its end for adjusting the rotational resistance of the sleeve. This utility model adjusts the rotational resistance of the connecting shaft through the adjusting structure, thereby adjusting the rotational speed of the sleeve. The adjusting structure works by rotating a threaded sleeve, which, through a compression spring, presses against a compression sleeve, causing the compression sleeve to abut against a fixed seat. This increases the resistance of the sleeve, reducing the power transmitted to the connecting shaft, thus limiting the rotational speed of the sleeve and preventing stacking.

Description

Technical Field

[0001] This utility model relates to the technical field of paper feeding and processing, and more specifically, to an adjustable pressure feeding mechanism for an automatic feeding flatbed machine. Background Technology

[0002] A paper cutting machine is an automated cutting device based on CNC technology. Through precise program control of the cutting head (such as a vibrating blade, laser, or mechanical cutter) within a planar coordinate system, it achieves efficient cutting of paper, cardboard, and lightweight sheets. Its core advantage lies in overcoming the limitations of traditional manual cutting—cutting accuracy can reach ±0.05mm, speed exceeds 1 meter / second, and it can handle cardboard up to 80mm thick or multi-layered materials. Combined with a vacuum adsorption table for automatic material fixation, it can complete straight, curved, and even complex irregular-shaped cuts. Widely used in packaging printing, clothing pattern making, advertising signage, and cultural and creative design, it significantly improves production efficiency and processing flexibility, becoming a key piece of equipment in modern light industry production.

[0003] Existing paperboard sheeting machines all have a feeding device. By fixing the paper tube to the feeding device, the paper is dragged forward by the traction force of the external vacuum adsorption table. At this time, the feeding device drives the paper tube to rotate to complete the feeding. However, the current feeding device cannot adjust the feeding speed. This causes the paper tube to rotate continuously when the dragging force is large, resulting in the paper stacking in front of the vacuum adsorption table. This causes paper stacking when the paper is dragged into the vacuum adsorption table for processing, thus causing trouble for subsequent paper processing. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable pressure feeding mechanism for an automatic feeding flatbed machine. By adjusting the structure, the rotational resistance of the connecting shaft is adjusted, thereby adjusting the rotational speed of the roll sleeve. This aims to solve the problem that the feeding equipment in the prior art cannot adjust the feeding speed, which causes the paper tube to rotate continuously when the drag force is large, resulting in the paper stacking in front of the vacuum adsorption table.

[0005] This utility model is implemented as follows: the adjustable pressure feeding mechanism of the automatic feeding platen machine includes two parallel supports, an adjusting rod is provided between the lower parts of the supports, a sleeve is provided on one side of each of the two supports facing each other, a connecting shaft is provided on one side of the sleeve, the connecting shaft passes through the support and is provided at the end with an adjusting structure for adjusting the rotation resistance of the sleeve.

[0006] Furthermore, a connecting bolt is provided on the adjusting rod, which enables the position adjustment of the support on the adjusting rod to achieve the spacing between the supports for placing the roll of paper.

[0007] Furthermore, a reinforcing groove is provided on the side of the support away from the adjusting rod, the reinforcing groove being used to place a reinforcing rod to increase the stability between the supports.

[0008] Furthermore, the adjustment structure includes a bushing disposed on the outer wall of the connecting shaft, a fixed seat being sleeved on the outside of the bushing, and a plurality of fixed blocks being disposed on one side edge of the fixed seat. The fixed blocks are inserted into the fixed grooves on the support to achieve relative fixation between the fixed seat and the support.

[0009] Furthermore, a pressing groove is provided on the other side of the fixed base, and a pressing sleeve is provided inside the pressing groove. One end of the bushing passes through the pressing sleeve and extends to the outside of the pressing groove.

[0010] Furthermore, the extrusion sleeve includes an outer limiting part, which is placed in the extrusion groove. The edge of the extrusion groove is provided with an outer limiting groove that is adapted to the outer limiting part. An extrusion part is provided on the inner side of the outer limiting part. The extrusion part abuts against the bottom wall of the extrusion groove. An inner extrusion part is provided on the inner side of the extrusion part.

[0011] Furthermore, the bushing includes a sleeve portion located on the side of the fixed seat near the support. A nesting portion is provided on one side of the sleeve portion, which is adapted to the inner extrusion portion. A threaded portion is provided on one side of the nesting portion.

[0012] Furthermore, a spring is sleeved on the outside of the threaded portion, one end of the spring abutting against the pressing portion and the other end abutting against the threaded sleeve, the threaded sleeve being adapted to the threaded portion.

[0013] Furthermore, positioning rods are provided through both sides of the connecting shaft on the support, and positioning grooves that are adapted to the positioning rods are provided on the sleeve and the sleeve. A bearing is provided on the connecting shaft between the two positioning rods, and the outer wall of the bearing is connected and fixed to the support.

[0014] Furthermore, both ends of the connecting shaft are provided with buckles, and limiters are fastened to the buckles to ensure that the sleeve and threaded sleeve do not detach from the connecting shaft when rotating.

[0015] Compared with the prior art, the adjustable pressure feeding mechanism of the automatic feeding platen machine provided by this utility model has the following beneficial effects:

[0016] 1. The rotational resistance of the connecting shaft is adjusted by adjusting the structure, thereby adjusting the speed of the sleeve. The adjusting structure is achieved by rotating the threaded sleeve, which is compressed by the compression spring, causing the compression sleeve to abut against the fixed seat. The outer limiting part and the inner limiting part of the compression sleeve interact with the outer limiting groove and the nesting part, respectively, which increases the friction and the resistance of the sleeve, thereby reducing the power transmitted to the connecting shaft, thus limiting the speed of the sleeve and preventing the stacking phenomenon.

[0017] 2. The fixing block on one side of the fixed seat is inserted into the fixing groove on the support to achieve relative fixation between the fixed seat and the support. In this way, when the nested part rotates, it needs to work to squeeze the inner limiting part to contract in order to complete the continuous rotation. If the threaded sleeve is rotated in the opposite direction, the squeezing force of the spring on the squeezing sleeve will disappear, and the movement space of the squeezing sleeve in the limiting groove will increase. When it rotates, it can continuously alternate between the outer limiting part and the inner limiting part to transition between the outer limiting groove and the nested part, thereby reducing the resistance and increasing the rotation power of the connecting shaft to drive the roll sleeve. It is easy to adjust and is suitable for widespread use on paper flatbed machines. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the adjustable pressure feeding mechanism of the automatic feeding platen machine proposed in this utility model;

[0019] Figure 2 This is an exploded view of the adjustable pressure feeding mechanism of the automatic feeding platen machine proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the fixed base in the adjustable pressure feeding mechanism of the automatic feeding platen machine proposed in this utility model;

[0021] Figure 4 This is a schematic diagram showing the connection between the fixed seat and the extrusion sleeve in the adjustable pressure feeding mechanism of the automatic feeding platen machine proposed in this utility model;

[0022] Figure 5 This is a side view of the adjustable pressure feeding mechanism of the automatic feeding platen machine proposed in this utility model, showing the structure of the bushing.

[0023] Figure 6 This is a schematic diagram of the bottom structure of the bushing in the adjustable pressure feeding mechanism of the automatic feeding platen machine proposed in this utility model;

[0024] Figure 7 This is a schematic diagram of the connecting shaft and the sleeve of the adjustable pressure feeding mechanism of the automatic feeding platen machine proposed in this utility model.

[0025] In the diagram: 1-support, 2-adjusting rod, 3-reinforcing groove, 4-sleeve, 5-connecting shaft, 6-fixed seat, 7-shaft sleeve, 71-threaded part, 72-nested part, 73-sleeve seat part, 8-extrusion sleeve, 81-outer limiting part, 82-extrusion part, 83-inner limiting part, 9-spring, 10-threaded sleeve, 11-limiting component, 12-fixing block, 13-positioning rod, 14-positioning groove, 15-bearing. 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 accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Reference Figure 1-7 As shown, the adjustable pressure feeding mechanism of the automatic feeding platen machine includes two parallel supports 1. An adjusting rod 2 is provided between the lower parts of the supports 1. A sleeve 4 is provided on one side of each of the two supports 1 facing each other. A connecting shaft 5 is provided on one side of the sleeve 4. The connecting shaft 5 passes through the support 1 and has an adjusting structure at its end for adjusting the rotational resistance of the sleeve 3. The rotational resistance of the connecting shaft 5 is adjusted by adjusting the adjusting structure, thereby adjusting the rotational speed of the sleeve 4 and avoiding the occurrence of stacking.

[0030] In this embodiment, a connecting bolt is provided on the adjusting rod 2. The connecting bolt enables the position adjustment of the support 1 on the adjusting rod 2 so as to place the roll paper between the supports 1. In this way, by continuously adjusting the spacing of the supports 1, roll paper of different lengths can be connected and fixed to the roll sleeve 4. The roll sleeve 4 is conical, which is convenient for fixing roll paper of different diameters.

[0031] In this embodiment, a reinforcing groove 3 is provided on the side of the support 1 away from the adjusting rod 2. The reinforcing groove 3 is used to place a reinforcing rod to increase the stability between the supports 1. The reinforcing groove 3 can add a connecting rod, so that the adjusting rod and the connecting rod work together to make the supports more stable.

[0032] In this embodiment, the adjustment structure includes a bushing 7 disposed on the outer wall of the connecting shaft 5. A fixing seat 6 is sleeved on the outside of the bushing 7. A plurality of fixing blocks 12 are disposed on one side edge of the fixing seat 6. The fixing blocks 12 are inserted into the fixing groove on the support 1 to achieve relative fixation between the fixing seat 12 and the support 1. A pressing groove is disposed on the other side of the fixing seat 6. A pressing sleeve 8 is disposed in the pressing groove. One end of the bushing 7 passes through the pressing sleeve 8 and extends to the outside of the pressing groove.

[0033] In this embodiment, the extrusion sleeve 8 includes an outer limiting part 81, which is placed in the extrusion groove. The edge of the extrusion groove is provided with an outer limiting groove that is adapted to the outer limiting part 81. An extrusion part 82 is provided on the inner side of the outer limiting part 81. The extrusion part 82 abuts against the bottom wall of the extrusion groove. An inner extrusion part 83 is provided on the inner side of the extrusion part 82. The bushing 7 includes a sleeve part 73, which is located on the side of the fixed seat 6 near the support 1. A nesting part 72 is provided on one side of the sleeve part 73. The nesting part 72 is adapted to the inner extrusion part. A threaded part 71 is provided on one side of the nesting part 72. A spring 9 is sleeved on the outside of the threaded part 71. One end of the spring 9 abuts against the extrusion part 82, and the other end abuts against the threaded sleeve 10. The threaded sleeve 10 is adapted to the threaded part 71.

[0034] In this embodiment, the connecting shaft 5 is provided with positioning rods 13 on both sides of the support 1. The sleeve portion 73 and the sleeve 4 are provided with positioning grooves that are adapted to the positioning rods 13. A bearing 15 is provided on the connecting shaft 5 between the two positioning rods 13. The outer wall of the bearing 15 is connected and fixed to the support 1.

[0035] In this embodiment, both ends of the connecting shaft 5 are provided with buckles, and limiters 11 are fastened to the buckles. The limiters 11 ensure that the sleeve 4 and the threaded sleeve 10 will not detach from the connecting shaft when rotating. The fixing block 12 on one side of the fixing seat 6 is inserted into the fixing groove on the support 1 to fix the fixing seat 6 and the support 1 respectively. In this way, when rotating, the nested part 72 needs to do work to squeeze the inner limiter 83 to shrink in order to complete the continuous rotation. If the threaded sleeve 10 is rotated in the opposite direction, the squeezing force of the spring 9 on the squeezing sleeve 8 will disappear.

[0036] This technical solution adjusts the rotational resistance of the connecting shaft 5 by adjusting the structure, thereby adjusting the rotational speed of the sleeve 4. The adjustment structure is achieved by rotating the threaded sleeve 10, which compresses the compression sleeve 8 through the compression spring 9, causing the compression sleeve 8 to abut against the fixed seat 6. The outer limiting part 81 and the inner limiting part 83 of the compression sleeve 8 interact with the outer limiting groove and the nesting part 72, respectively, which increases the friction and the resistance of the sleeve 7, thereby reducing the power transmitted to the connecting shaft 5, thus limiting the rotational speed of the sleeve 4 and preventing the stacking phenomenon.

[0037] In this embodiment, the extrusion sleeve 8 has increased activity space in the limiting groove. When it rotates, it can continuously alternate between the outer limiting part 81 and the inner limiting part 83 to transition between the outer limiting groove and the nesting part, thereby reducing resistance and increasing the rotational power of the connecting shaft 5 to drive the roll sleeve 3. It is easy to adjust and suitable for widespread use on paper flatbed machines.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable pressure feeding mechanism for an automatic feeding platen machine, characterized in that, It includes two parallel supports, an adjusting rod between the lower parts of the supports, a sleeve on each side of the two supports facing each other, a connecting shaft on one side of the sleeve, the connecting shaft passing through the support and having an adjusting structure at its end for adjusting the rotational resistance of the sleeve.

2. The adjustable pressure feeding mechanism of the automatic feeding platen as described in claim 1, characterized in that, A connecting bolt is provided on the adjusting rod, which allows for the adjustment of the position of the support on the adjusting rod, so as to achieve the spacing between the supports for placing the roll of paper.

3. The adjustable pressure feeding mechanism of the automatic feeding platen as described in claim 2, characterized in that, A reinforcement groove is provided on the side of the support away from the adjusting rod. The reinforcement groove is used to place a reinforcement rod to increase the stability between the supports.

4. The adjustable pressure feeding mechanism of the automatic feeding platen as described in any one of claims 1-3, characterized in that, The adjustment structure includes a bushing disposed on the outer wall of the connecting shaft, a fixed seat being sleeved on the outside of the bushing, and a plurality of fixing blocks being disposed on one side edge of the fixed seat. The fixing blocks are inserted into the fixing grooves on the support to achieve relative fixation between the fixed seat and the support.

5. The adjustable pressure feeding mechanism of the automatic feeding platen as described in claim 4, characterized in that, An extrusion groove is provided on the other side of the fixed base, and an extrusion sleeve is provided inside the extrusion groove. One end of the bushing passes through the extrusion sleeve and extends to the outside of the extrusion groove.

6. The adjustable pressure feeding mechanism of the automatic feeding platen as described in claim 5, characterized in that, The extrusion sleeve includes an outer limiting part, which is placed in an extrusion groove. The edge of the extrusion groove is provided with an outer limiting groove that matches the outer limiting part. An extrusion part is provided on the inner side of the outer limiting part. The extrusion part abuts against the bottom wall of the extrusion groove. An inner extrusion part is provided on the inner side of the extrusion part.

7. The adjustable pressure feeding mechanism of the automatic feeding platen as described in claim 6, characterized in that, The bushing includes a sleeve portion located on the side of the fixed seat near the support. A nesting portion is provided on one side of the sleeve portion, which is adapted to the inner extrusion portion. A threaded portion is provided on one side of the nesting portion.

8. The adjustable pressure feeding mechanism of the automatic feeding platen as described in claim 7, characterized in that, A spring is fitted around the outside of the threaded portion. One end of the spring abuts against the pressing portion, and the other end abuts against the threaded sleeve. The threaded sleeve is adapted to the threaded portion.

9. The adjustable pressure feeding mechanism of the automatic feeding platen as described in claim 8, characterized in that, The connecting shaft is provided with positioning rods on both sides of the support. The sleeve and the sleeve are provided with positioning grooves that are adapted to the positioning rods. A bearing is provided on the connecting shaft between the two positioning rods. The outer wall of the bearing is connected and fixed to the support.

10. The adjustable pressure feeding mechanism of the automatic feeding platen as described in claim 9, characterized in that, Both ends of the connecting shaft are provided with buckles, and limiters are fastened to the buckles to ensure that the sleeve and threaded sleeve do not detach from the connecting shaft when rotating.

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