Motor-driven paper anti-loosening tensioning mechanism and transverse cutting machine

Abstract

The utility model discloses a motor drive type paper anti-loosening tensioning mechanism, which relates to the technical field of paper production and comprises a base, a supporting plate is mounted above the base, a paper conveying roller used for guiding paper is arranged at the bottom of the supporting plate, a tensioning assembly is further arranged on the supporting plate, and the paper conveying roller is connected with the supporting plate. The tensioning assembly comprises two pressing rollers symmetrically arranged on the two sides of the paper conveying roller and a lifting unfolding component used for driving the two pressing rollers to move downwards at the same time, and when the lifting unfolding component drives the two pressing rollers to move downwards, the two pressing rollers abut against the upper surface of conveyed paper and are far away from each other. The lead screw sliding table drives the lifting plate to move, then the lifting plate drives the connecting plates on the two sides below the lifting plate to move, the connecting plates drive the pressing rollers to move downwards, meanwhile, the pressing rollers are unfolded, and the reset components are pulled up and stretched, so that the positions of the two pressing rollers are adjusted, paper is tensioned, and the situation that follow-up cutting is affected due to looseness is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cross-cutting machines, in particular to a motor-driven paper anti-loosening tensioning mechanism, and in particular to a cross-cutting machine. Background Art

[0002] The cross-cutting machine is one of the important single machines in the paper production line. The cross-cutting machine is divided into mechanical cross-cutting machine and computer-controlled cross-cutting machine due to different transmission control methods. The computer cross-cutting machine is controlled by an industrial control computer. According to the set length, the knife shaft is controlled to cut the paper. In addition, the precision transmission of the mechanical part can control the paper cutting error within the range of ±1mm. The computer-controlled cross-cutting machine includes spiral knife cross-cutting machine and straight knife cross-cutting machine. The spiral knife cross-cutting machine is more suitable for high-speed cutting of thick cardboard, and the paper cutting is stable and the blade life is long.

[0003] Chinese patent CN203033515U discloses a synchronization adjustment mechanism for a paper cross-cutting machine, including a machine body, a paper feeding rubber roller, a bridge aluminum roller, and a paper transfer rubber roller; according to the paper feeding speed of the paper transfer rubber roller, the tension of the paper when passing through the bridge aluminum roller and the aluminum roller on the rocker arm changes, so that the paper pulls the rocker arm to swing, and after the rocker arm swings, the motor speed of the paper feeding rubber roller is controlled by an encoder, so that the motor speed of the paper feeding rubber roller is kept synchronized with the motor of the paper transfer rubber roller as much as possible to ensure smooth and accurate paper transmission. It is applied to the paper cross-cutting machine and has a good use effect.

[0004] The above utility model adjusts the motor speed of the paper transfer roller by a swing arm, but controls the swing arm by the tension of the paper. After the swing arm is adjusted, there will be a large delay, which causes the loose paper to become too tight and tear or too loose, affecting cutting. Utility Model Content

[0005] In view of the above problems, a motor-driven paper anti-loosening tensioning mechanism and a punching device are provided, which solve the technical problem that the paper is easy to loosen and affect cutting through an adjustable and movable tightening roller.

[0006] In order to solve the problems of the prior art, the utility model provides a motor-driven paper anti-slack tensioning mechanism, comprising a base, a support plate is installed above the base, a paper transfer roller for guiding the paper is arranged at the bottom of the support plate, and a tensioning assembly is also arranged on the support plate, and the tensioning assembly includes two pressure rollers symmetrically arranged on both sides of the paper transfer roller and a lifting and unfolding component for driving the two pressure rollers to move downward at the same time, when the lifting and unfolding component drives the two pressure rollers to move downward, the two pressure rollers press against the upper surface of the conveyed paper and move away from each other.

[0007] Preferably, the lifting and unfolding component includes a screw slide, a lifting plate and a connecting plate; the screw slide is vertically arranged on the support plate; the lifting plate is horizontally arranged at the working end of the screw slide; the number of the connecting plates is the same as the number of the pressure rollers and corresponds one to one, and one side of the connecting plate is hingedly arranged with one side of the bottom of the lifting plate. The other side of the connecting plate is connected to the pressure roller, and the two connecting plates are arranged in an inverted V shape at the bottom of the support plate. The support plate is provided with a rectangular opening for each connecting plate to move, and a reset component is provided on the inner side of the rectangular opening, and the reset component is connected to the inner side of the connecting plate.

[0008] Preferably, the reset component is a reset spring, one end of the reset spring is connected to the inner side of the rectangular through opening, and the other end of the reset spring is connected to the inner side of the connecting plate.

[0009] Preferably, a first horizontally arranged slide groove is provided on both sides of the rectangular opening on the support plate, a slider capable of sliding along the first slide groove is provided in the first slide groove, and a second slide groove extending along the length direction of the connecting plate is provided on both sides of the connecting plate, and one end of the slider can be slidably arranged in the second slide groove.

[0010] Preferably, a sliding rod is installed on the side of the support plate away from the screw slide, a connecting block is slidably connected to the sliding rod, and one end of the connecting block is fixedly connected to the lifting plate.

[0011] Preferably, a light column is vertically arranged on the top of the support plate, a through hole for the light column to move is arranged on the lifting plate, and a stop plate capable of abutting against the upper surface of the lifting plate is arranged on the top of the light column.

[0012] Preferably, a buffer spring is sleeved on the light column, and two ends of the buffer spring are respectively disposed in contact with the top of the support plate and the bottom of the lifting plate.

[0013] The present application also provides a cross-cutting machine, comprising a motor-driven paper anti-slack tensioning mechanism.

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

[0015] 1. This application solves the technical problem that paper is prone to loosening and affects cutting by using an adjustable and movable pressure roller;

[0016] 2. The present application provides a light column and a buffer spring to make the lifting plate more stable when moving, thereby facilitating the adjustment of the pressure roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional diagram of the motor-driven paper anti-slack tensioning mechanism in a first viewing angle;

[0018] Figure 2It is the integral solid of the transverse support plate in the motor-driven paper anti-slack tensioning mechanism;

[0019] Figure 3 is a cross-sectional view of a motor-driven paper anti-slack tensioning mechanism in a side view;

[0020] Figure 4 It is a motor-driven paper anti-slack tensioning mechanism. Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 It is a three-dimensional diagram of a pressure roller, a mounting frame, a connecting plate and a mounting plate in a motor-driven paper anti-slack tensioning mechanism;

[0022] Figure 6 It is a schematic diagram of the operating status of a motor-driven paper anti-slack tensioning mechanism.

[0023] The numbers in the figure are: 1. base; 2. support plate; 3. paper transfer roller; 4. tensioning assembly; 41. pressure roller; 42. screw slide; 43. lifting plate; 44. connecting plate; 45. reset spring; 46. first slide groove; 47. slider; 48. second slide groove; 49. light column; 410. stop plate; 411. buffer spring; 412. slide rod; 413. connecting block. DETAILED DESCRIPTION

[0024] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] See also Figures 1 to 6 As shown, the utility model provides a motor-driven paper anti-slack tensioning mechanism, including a base 1, a support plate 2 is installed above the base 1, a paper transfer roller 3 for guiding the paper is arranged at the bottom of the support plate 2, and a tensioning assembly 4 is also arranged on the support plate 2. The tensioning assembly 4 includes two pressure rollers 41 symmetrically arranged on both sides of the paper transfer roller 3 and a lifting and unfolding component for driving the two pressure rollers 41 to move downward at the same time. When the lifting and unfolding component drives the two pressure rollers 41 to move downward, the two pressure rollers 41 press against the upper surface of the conveyed paper and move away from each other.

[0026] The positions of the two pressing rollers 41 are adjusted by lifting and unfolding the components until the two pressing rollers 41 are downward and open to press the paper, thereby tensioning the paper to avoid slack that would affect subsequent cutting.

[0027] See also Figures 2 to 3 and Figure 5As shown, the lifting and unfolding components include a screw slide 42, a lifting plate 43 and a connecting plate 44; the screw slide 42 is vertically arranged on the support plate 2; the lifting plate 43 is horizontally arranged at the working end of the screw slide 42; the number of connecting plates 44 is the same as the number of pressure rollers 41 and corresponds one to one, one side of the connecting plate 44 is hinged to the bottom side of the lifting plate 43, and the other side of the connecting plate 44 is connected to the pressure roller 41, and the two connecting plates 44 are arranged in an inverted V shape at the bottom of the support plate 2, and a rectangular opening for each connecting plate 44 to move is provided on the support plate 2, and a reset component is provided on the inner side of the rectangular opening, and the reset component is connected to the inner side of the connecting plate 44.

[0028] By starting the screw slide 42, the screw slide 42 drives the lifting plate 43 to move, and then the lifting plate 43 drives the connecting plates 44 on both sides below to move, and then the connecting plates 44 drive the pressure rollers 41 to move downward and unfold at the same time, and pull up and stretch the reset component, so as to adjust the positions of the two pressure rollers 41.

[0029] The lifting and unfolding component also includes a tension sensor installed on the base 1, which is used to detect the tightness of the paper during transmission. Specifically, the tension sensor does not belong to the protection scope of the present application and is therefore not shown in the figure. The tension sensor is used to monitor the tightness of the paper in real time. When the paper is too loose, the tension sensor transmits a signal to the controller, which then starts the screw slide 42.

[0030] See also Figures 3 to 5 As shown, the reset component is a reset spring 45 , one end of the reset spring 45 is connected to the inner side of the rectangular through opening, and the other end of the reset spring 45 is connected to the inner side of the connecting plate 44 .

[0031] When the connecting plate 44 drives the pressure roller 41 to move downward, the reset spring 45 is stretched. When the lifting plate 43 moves upward, the elastic deformation of the reset spring 45 drives the connecting plate 44 to move and reset the connecting plate 44.

[0032] See also Figure 3 and Figure 4 As shown, a horizontally arranged first slide groove 46 is provided on both sides of the rectangular opening on the support plate 2, a slider 47 capable of sliding along the first slide groove 46 is provided in the first slide groove 46, and a second slide groove 48 extending along the length direction of the connecting plate 44 is provided on both sides of the connecting plate 44, and one end of the slider 47 is slidably arranged in the second slide groove 48.

[0033] When the connecting plate 44 moves, the sliding blocks 47 on both sides of the connecting plate 44 are driven to move along the first sliding groove 46 and the second sliding groove 48, so that the connecting plate 44 is more stable when moving.

[0034] See also Figure 2As shown, a slide bar 412 is installed on the side of the support plate 2 away from the screw slide 42 , and a connecting block 413 is slidably connected to the slide bar 412 , and one end of the connecting block 413 is fixedly connected to the lifting plate 43 .

[0035] When the lifting plate 43 moves, the connecting block 413 on one side is driven by the lifting plate 43 to slide on the sliding rod 412, thereby preventing the lifting plate 43 from tilting when moving.

[0036] See also Figure 2 As shown, a light column 49 is vertically arranged on the top of the support plate 2 , a through hole for the light column 49 to move is arranged on the lifting plate 43 , and a stop plate 410 capable of abutting against the upper surface of the lifting plate 43 is arranged on the top of the light column 49 .

[0037] When the connecting plate 44 is driven to move by the lifting plate 43 , it will move along the light column 49 , and the lifting plate 43 is limited by the stop plate 410 , thereby increasing the stability of the movement of the lifting plate 43 .

[0038] See also Figure 2 and Figure 5 As shown, a buffer spring 411 is sleeved on the light column 49 , and two ends of the buffer spring 411 are respectively disposed to abut against the top of the support plate 2 and the bottom of the lifting plate 43 .

[0039] When the lifting plate 43 moves on the light column 49 , the buffer spring 411 sleeved on the outer surface of the light column 49 is squeezed, so that the lifting plate 43 is more stable when moving downward.

[0040] The present application also provides a cross-cutting machine, comprising a motor-driven paper anti-slack tensioning mechanism.

[0041] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. Motor-driven paper anti-slack tensioning mechanism, characterized in that: The invention comprises a base (1), a support plate (2) is installed above the base (1), a paper transfer roller (3) for guiding paper is arranged at the bottom of the support plate (2), and a tensioning assembly (4) is also arranged on the support plate (2), the tensioning assembly (4) comprises two pressure rollers (41) symmetrically arranged on both sides of the paper transfer roller (3) and a lifting and unfolding component for driving the two pressure rollers (41) to move downward at the same time, when the lifting and unfolding component drives the two pressure rollers (41) to move downward, the two pressure rollers (41) press against the upper surface of the paper being conveyed and move away from each other.

2. The motor-driven paper anti-slack tensioning mechanism according to claim 1, characterized in that: The lifting and unfolding component comprises a screw slide (42), a lifting plate (43) and a connecting plate (44); The screw slide (42) is vertically arranged on the support plate (2); The lifting plate (43) is horizontally arranged at the working end of the screw slide (42); The number of the connecting plates (44) is the same as the number of the pressure rollers (41) and corresponds one to one. One side of the connecting plate (44) is hingedly connected to one side of the bottom of the lifting plate (43), and the other side of the connecting plate (44) is connected to the pressure roller (41). The two connecting plates (44) are arranged at the bottom of the support plate (2) in an inverted V shape. The support plate (2) is provided with a rectangular opening for each connecting plate (44) to move. A reset component is provided on the inner side of the rectangular opening, and the reset component is connected to the inner side of the connecting plate (44).

3. The motor-driven paper anti-slack tensioning mechanism according to claim 2, characterized in that: The reset component is a reset spring (45), one end of the reset spring (45) is connected to the inner side of the rectangular opening, and the other end of the reset spring (45) is connected to the inner side of the connecting plate (44).

4. The motor-driven paper anti-slack tensioning mechanism according to claim 2, characterized in that: A first sliding groove (46) is horizontally arranged on both sides of the rectangular opening on the support plate (2), a sliding block (47) capable of sliding along the first sliding groove (46) is arranged in the first sliding groove (46), and a second sliding groove (48) extending along the length direction of the connecting plate (44) is arranged on both sides of the connecting plate (44), and one end of the sliding block (47) is slidably arranged in the second sliding groove (48).

5. The motor-driven paper anti-slack tensioning mechanism according to claim 1, characterized in that: A sliding rod (412) is installed on the side of the support plate (2) away from the screw slide (42), a connecting block (413) is slidably connected to the sliding rod (412), and one end of the connecting block (413) is fixedly connected to the lifting plate (43).

6. The motor-driven paper anti-slack tensioning mechanism according to claim 2, characterized in that: A light column (49) is vertically arranged on the top of the support plate (2), a through hole for the light column (49) to move is provided on the lifting plate (43), and a stop plate (410) capable of abutting against the upper surface of the lifting plate (43) is provided on the top of the light column (49).

7. The motor-driven paper anti-slack tensioning mechanism according to claim 6, characterized in that: A buffer spring (411) is sleeved on the light column (49), and two ends of the buffer spring (411) are respectively disposed in contact with the top of the support plate (2) and the bottom of the lifting plate (43).

8. A cross-cutting machine, characterized in that: It comprises the motor-driven paper anti-slack tensioning mechanism as described in any one of claims 1 to 7.

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