Paper pressing locking mechanism and binding machine

Abstract

The paper pressing locking mechanism and the bookbinding machine comprise a workbench and a paper pressing arm, and further comprise a locking assembly, a paper pressing mechanism and a paper pressing mechanism, and the locking assembly is provided with a stop shaft connected with the paper pressing arm and a stop block matched with the stop shaft in a crossed mode; one end of the stop block is a pivoting end, and the other end of the stop block is a suspension end; the reset assembly is provided with a short rod and a long rod which are movably connected with the suspension end of the stop block; and the short rod or the long rod is controlled to drive the suspension end of the stop block to rotate, so that the stop block is changed into an inclined state from a horizontal state or changed into the horizontal state from the inclined state, and the stop block and the stop shaft are locked or separated. Automatic locking and automatic resetting can be carried out during punching and rivet pressing, and automatic locking and manual resetting can be carried out during independent punching; automatic locking is safe and reliable, the paper pressing arm can be stably returned to the initial state no matter manual reset or automatic reset, the overall structure is simple, matching precision is high, operation is safe, and control is stable.

Description

Technical Field

[0001] This application belongs to the technical field of binding machines, and in particular relates to a paper pressing and locking mechanism and a binding machine provided with the paper pressing and locking mechanism. Background Art

[0002] In the existing binding machine during the riveting process, the position of the paper pressing arm when pressing against the paper can only be manually locked, and due to its structural design problems, it cannot be automatically reset during the reset process, resulting in extremely low riveting efficiency. When manually operated, there are great safety risks, which greatly reduces the effect of riveting and binding. Moreover, in the existing binding machine, punching and riveting are both linked operations, and when punching alone, the corresponding locking mechanism cannot be reset. Therefore, how to design a locking mechanism that can perform automatic locking and automatic reset during punching and riveting, and can also perform automatic locking and manual reset during punching alone is the key point of the invention in this case. Summary of the Invention

[0003] This application provides a paper pressing and locking mechanism and a binding machine, which solve the technical problem that the paper pressing arm cannot be automatically locked and reset during riveting in the prior art.

[0004] To solve at least one of the above technical problems, the technical solution adopted in this application is:

[0005] A paper pressing and locking mechanism includes a workbench and a paper pressing arm, and further includes:

[0006] A locking component, which is provided with a stop shaft connected to the paper pressing arm and a stop block cross-matched with the stop shaft; one end of the stop block is a pivoting end, and the other end is a suspended end;

[0007] A reset component, which is provided with a short rod and a long rod both movably connected to the suspended end of the stop block;

[0008] Controlling the short rod or the long rod to drive the suspended end of the stop block to rotate, so that the stop block changes from a horizontal state to an inclined state or from an inclined state to a horizontal state, so that the stop block is locked with or separated from the stop shaft.

[0009] Further, the pivoting end of the stop block is connected to a fixed block vertically arranged on the workbench; the rotation angle of the stop block relative to its pivot connection with the fixed block is 1-3°.

[0010] Further, the short rod sequentially passes through the stop block and the workbench, and is pivotally connected to a swing rod placed under the workbench; a reset spring is also sleeved on the short rod, and the reset spring is arranged between the stop block and the workbench.

[0011] Further, the stop shaft sequentially passes through the stop block and the workbench and is disposed therein; and when the paper pressing arm is at the highest position, the lower end surface of the stop shaft is embedded in the through hole on the workbench.

[0012] Further, a limiting rod for horizontally placing the stop block is also provided below the stop block, and the limiting rod is configured on the side close to the short rod in the length direction of the stop block.

[0013] Further, a cam is provided below the workbench, and the cam is disposed on the base and close to the stop block; the base and the workbench are interconnected by a frame; an upwardly disposed arc-shaped convex platform is configured on the top edge of the cam.

[0014] Further, the swing rod is pivotally connected to the frame, and a roller disposed toward the convex platform is provided at one end thereof away from the short rod; the pivot connection point of the frame and the swing rod, the length from it to the roller is greater than the length from it to the connection point of the swing rod and the short rod.

[0015] Further, the long rod is vertically disposed above the stop block and is placed on the top of the frame body on the workbench;

[0016] A positioning pin parallel to the long rod is further provided on the top of the frame body, and the positioning pin is disposed downward.

[0017] Further, a positioning sleeve in contact and cooperation with the lower end surface of the positioning pin is also sleeved on the long rod, and the positioning sleeve is of an annular structure;

[0018] The upper end surface of the positioning sleeve is constructed as an inclined surface;

[0019] Control the long rod to rotate so that the highest point of the positioning sleeve contacts the lower end surface of the positioning pin, the lower bottom surface of the long rod abuts against the stop block, and the stop block is in a horizontal state.

[0020] A binding machine is provided with the locking mechanism as described above.

[0021] Adopting a paper pressing and locking mechanism designed by the present application, multiple working states can be executed. It can perform automatic locking and automatic reset during punching and riveting, and can also perform automatic locking and manual reset during single punching; the automatic locking is safe and reliable. Whether it is manual reset or automatic reset, the paper pressing arm can be smoothly returned to its initial state and can be continuously operated; the overall structure of the locking mechanism is simple and the matching precision is high, the operation is safe and the control is stable. The present application also proposes a binding machine provided with the paper pressing and locking mechanism. Description of the Drawings

[0022] Figure 1is a perspective view of the paper pressing and locking mechanism in the present application;

[0023] Figure 2 is a partial perspective view of the paper pressing and locking mechanism in the present application;

[0024] Figure 3 is a schematic diagram of the paper pressing arm in the locked state in the present application;

[0025] Figure 4 is a simplified diagram of the locked state in the present application;

[0026] Figure 5 is a schematic diagram of the paper pressing arm in the reset state in the present application;

[0027] Figure 6 is a schematic diagram of the cooperation between the positioning sleeve and the positioning pin in the enlarged view of part A;

[0028] Figure 7 is a schematic diagram of the locking state in the enlarged view of part B.

[0029] In the figure:

[0030] 10, workbench; 20, paper pressing arm; 30, locking component

[0031] 31, stop shaft; 32, stop block; 33, limit rod

[0032] 34, fixed block; 40, reset component; 41, short rod

[0033] 42, reset spring; 43, swing rod; 44, roller

[0034] 45, long rod; 46, positioning sleeve; 47, positioning pin

[0035] 50, cam; 51, boss; 60, riveting motor Detailed implementation manners

[0036] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] This embodiment provides a paper pressing and locking mechanism, as shown in Figure 1As shown in the figure, it includes a workbench 10 and a paper pressing arm 20. A base is provided below the workbench 10 and is interconnected with it through a frame. A frame body is provided above the workbench 10. A carrier for press riveting (omitted in the drawing), a press riveting motor 60 for driving press riveting, and a cam 50 for driving the riveting head to move up and down are fixed on the base. The press riveting motor 60 and the cam 50 are in gear meshing transmission; the paper pressing arm 20 is arranged on the frame body. It further includes a locking component 30 provided above the workbench 10 and a reset component 40 separately arranged above and below the workbench 10. Among them, the locking component 30 includes a stop shaft 31 connected to the paper pressing arm 20 and moving up and down in the vertical direction, and a stop block 32 cross-matching with the stop shaft 31; one end of the stop block 32 is a pivoting end, and the other end is a suspended end. The reset component 40 includes a short rod 41 and a long rod 45 both movably connected to the suspended end of the stop block 32; controlling the short rod 41 or the long rod 45 to drive the suspended end of the stop block 32 to rotate around the axis of its pivoting end, so that the stop block 32 changes from a horizontal state to an inclined state, so that the stop block 32 is locked with the stop shaft 31; or changing the stop block 32 from an inclined state to a horizontal state, so that the stop block 32 is separated from the stop shaft 31.

[0038] As Figure 2 shown, the pivoting end of the stop block 32 is pivotally connected to a fixed block 34 vertically arranged on the workbench 10, and the rotation angle θ of the stop block 32 relative to its pivotal connection with the fixed block 34 is 1 - 3°. That is, the stop block 32 has two working states. One is horizontally arranged transversely. At this time, it is vertically connected to the fixed block 34, and at this time, the stop shaft 31 can freely pass through the stop block 32 for lifting and lowering without being restricted. Another working state of the stop block 32 is upwardly inclined, and the inclination angle θ is 1 - 3°. At this time, the stop block 32 is in frictional contact with the stop shaft 31. Due to the friction of the inner wall of the through hole in the stop block 32 on the stop shaft 31, its position is fixed and it cannot move up and down, so that the locking of the stop shaft 31 can be completed.

[0039] As Figures 3-5 shown, the stop shaft 31 is connected to a fixed frame on the paper pressing arm 20, and its lower end surface passes through the stop block 32 and the workbench 10 in sequence and is placed. And when the paper pressing arm 20 is at its highest position, the lower end surface of the stop shaft 31 also needs to be embedded in the through hole in the workbench 10 that cooperates with it to ensure the stability and safety of the up and down guidance of the stop shaft 31 and prevent misalignment or shaking.

[0040] In addition, in order to improve the stability of the stop block 32 in the horizontal state, a limiting rod 33 for horizontally placing it is also provided below the stop block 32. The limiting rod 33 is configured to be arranged on one side of the stop block 32 close to the short rod 41 in the length direction. The limiting rod 33 generally selects a limiting screw with a flat top, and its height is flush with the lower end surface of the stop block 32 when it is horizontal.

[0041] The short rod 41 is disposed at the suspended end of the stop block 32 and is movably connected to the stop block 32. It sequentially passes through the stop block 32 and the workbench 10 and is pivotally connected to a swing rod 43 disposed below the workbench 10. A return spring 42 is also sleeved on the short rod 41, and the return spring 42 is disposed in the section of the short rod 41 between the stop block 32 and the workbench 10. When the stop block 32 is pressed to the horizontal state, the return spring 42 is in a contracted state. When there is no external force to control the stop block 32 from pressing the return spring 42, the return spring 42 will expand and bounce the stop block 32 from the horizontal state back to its inclined state to lock and fix the stop shaft 31.

[0042] As Figure 2 shown, a cam 50 is disposed on the base, and a riveting motor 60 is disposed on one side of the base away from the stop block 32. The cam 50 is disposed on the base and on the side close to the stop block 32. An upwardly disposed arc-shaped boss 51 is configured at the top edge of the cam 50, and it cooperates with a roller 44 on one end of the swing rod 43 away from the short rod 41. The middle section of the swing rod 43 is pivotally connected to the frame. One end of it is pivotally connected to the short rod 41, and the end away from the short rod 41 is suspended. The roller 44 is disposed at the suspended end of the swing rod 43. Its axis is perpendicular to the length of the swing rod 43 and is configured towards the side of the boss 51. Among them, in order to increase the swing amplitude of the swing rod 43, it is required that in the swing rod 43, the length from the pivot point with the frame to one end of the roller 44 is greater than the length from it to one end of the short rod 41.

[0043] As Figures 3-5 shown, the initial position of the stop block 32 is in an inclined state. The riveting motor 60 drives the cam 50 to rotate, thereby driving the boss 51 to rotate. Each time it rotates one week, the boss 51 will contact the roller 44 once. When the roller 44 rolls over from the boss 51, the swing rod 43 will tilt downward towards the side close to the short rod 41. Further, it will pull the short rod 41 to move downward, thereby driving the stop block 32 to rotate downward, so that the stop block 32 changes from its inclined state to the horizontal state, that is, as Figure 5 shown. When the roller 44 contacts the flat top surface in the cam 50, the swing rod 43 is no longer inclined but in a horizontal state. The short rod 41 no longer compresses the return spring 42, and the return spring 42 will periodically push the stop block 32, so that the stop block 32 is reset to its inclined state, that is, as Figure 3 shown. Further, through the cooperation of the boss 51 and the roller 44, the swing rod 43 is driven to pull the stop block 32 to rotate downward through the short rod 41 or release the short rod 41 and the return spring 42 pushes the stop block 32 to rotate upward to complete the locking and releasing of the stop shaft 31.

[0044] As Figure 4As shown, the long rod 45 is vertically arranged above the stop block 32 and is mounted on the top of the frame connected to the workbench 10. The motor for controlling the up and down movement of the paper pressing arm 20 and the punching device are both fixed on the frame. At the top of the frame, there are also positioning pins 47 arranged vertically downward in parallel with the long rod 45. The top of the positioning pin 47 is fixed on the frame, and its lower end face is suspended downward.

[0045] As Figure 6 shown, a positioning sleeve 45 with an annular structure that contacts and cooperates with the lower end face of the positioning pin 47 is also sleeved on the long rod 45; the upper end face of the positioning sleeve 45 is constructed as an inclined circular plane structure. Preferably, the inclination angle β of the inclined surface on the positioning sleeve 45 is an acute angle, and its range is 10 - 50°, including the end angles 10° and 50°; and the height H of this inclined surface is 1 - 10 cm. As long as it can be ensured that when the highest point of the positioning sleeve contacts the lower end face of the positioning pin 47, that is, as Figure 6 shown; at this time, exactly the lower bottom surface of the long rod 45 abuts against the upper end face of the stop block 32 and makes the stop block 32 in a horizontal state, as Figure 7 shown.

[0046] In this embodiment, the binding machine provided with this locking mechanism has two working modes. One is only punching without riveting, and the other is both punching and riveting. The initial state of the stop block 32 and the stop shaft 31 is an inclined locking state. At this time, the positioning sleeve 46 on the long rod 45 and the positioning pin 47 are in a non-contact state.

[0047] For only punching without riveting, the riveting motor 60 and the cam 50 do not work. At this time, it is impossible to control the stop block 32 to lock or reset the stop shaft 31 through the swing rod 43. Then it is necessary to control the cooperation of the long rod 45 and the positioning pin 47 to control the operation of the stop block 32. Specifically:

[0048] When only punching without riveting, only need to manually control the long rod 45 and make it rotate a preset 90°. During this process, as the inclined surface of the positioning sleeve 46 gradually approaches the positioning pin 47, the positioning pin 47 also gradually elongates the length of the long rod 45, and makes the lower end face of the long rod 45 abut against the upper end face of the suspended end of the stop block 32, so as to force the stop block 32 to rotate downward around its pivot point with the fixed block 34. At the same time, the stop block 32 presses the return spring 42 and contracts downward together until the stop block 32 contacts the limit rod 33. At this time, the highest point of the positioning sleeve 46 directly abuts against the lower end face of the positioning pin 47, and the lower end face of the long rod 45 abuts against the upper end face of the stop block 32, and the stop block 32 is in a horizontal state, as Figure 7As shown in the figure. When the stop block 32 is in the horizontal state, the paper pressing arm 20 can drive the stop shaft 31 to move downward until the paper pressing arm 20 presses against the paper and stops. Then, control the long rod 45 to rotate reversely by 90°, so that the highest point of the positioning sleeve 46 is away from the lowest point of the positioning pin 47, and the lower end surface of the long rod 45 is away from the stop block 32. Correspondingly, the return spring 42 rebounds and forces the stop block 32 to rotate upward to its inclined state, then the stop block 32 locks the stop shaft 31, thus completing the locking work of the paper pressing arm 20; then continue to control the drill needle to perform the punching operation. After punching is completed, manually control the long rod 45, repeat the above process, first change the stop block 32 from the inclined state to the horizontal state, release the stop shaft 31, and control the paper pressing arm 20 and the stop shaft 31 to move upward to their initial positions; then control the stop block 32 to change from the horizontal state to the inclined state to lock and fix its position.

[0049] When both punching and riveting are required, only need to drive the stop block 32 through the swing rod 43 to perform automatic locking and automatic reset to complete the whole action. Specifically:

[0050] As Figure 3 , 5 shown in the figure, when starting punching and riveting, control the cam 50 to drive the boss 51 to rotate. When it rotates close to the roller 44, it will push against the roller 44 to make the swing rod 43 inclined and the connection end of the swing rod 43 and the short rod 41 move downward, pulling the short rod 41 to move downward, so that the short rod 41 compresses the return spring 42 to contract, and together drives the stop block 32 to rotate downward with the pivot point between the stop block 32 and the fixed block 34 as the rotation axis until the stop block 32 is pushed against by the limiting rod 33, changing the stop block 32 from the inclined state to the horizontal state, that is, releasing the stop shaft 31. At this time, the system will notify the motor to control the paper pressing arm 20 to move downward until the paper pressing arm 20 contacts the paper surface, and the paper pressing ends. After the riveting is completed, notify the system through the swing rod 43 to release the short rod 41, the return spring 42 no longer contracts and drives the stop block 32 to rotate reversely from the horizontal state to its inclined state. At this time, the stop block 32 locks and fixes the stop shaft 31 again.

[0051] A binding machine is equipped with the locking mechanism as described above.

[0052] Using the paper pressing locking mechanism designed in this application, it can execute multiple working states, and can perform automatic locking and automatic reset during punching and riveting, and can also perform automatic locking and manual reset during single punching; the automatic locking is safe and reliable. Whether it is manual reset or automatic reset, the paper pressing arm can be smoothly returned to its initial state and can be continuously operated; the overall structure of this locking mechanism is simple and the matching precision is high, the operation is safe and the control is stable. This application also proposes a binding machine provided with this paper pressing locking mechanism.

[0053] The above has described the embodiments of the present application in detail. The above content is only the preferred embodiments of the present application and cannot be considered as limiting the scope of implementation of the present application. All equivalent changes and improvements made according to the scope of the present application shall still fall within the scope covered by the patent of the present application.

Claims

1. A paper pressing and locking mechanism, comprising a workbench and a paper pressing arm, characterized in that, It further includes: A locking component, which is provided with a stop shaft connected to the paper pressing arm and a stop block cross - mating with the stop shaft; one end of the stop block is a pivoting end, and the other end is a suspended end; A reset component, which is provided with a short rod and a long rod both movably connected to the suspended end of the stop block; Controlling the short rod or the long rod to drive the suspended end of the stop block to rotate, so that the stop block changes from a horizontal state to an inclined state or from an inclined state to a horizontal state, so that the stop block locks or separates from the stop shaft.

2. The paper pressing and locking mechanism according to claim 1, characterized in that, The pivoting end of the stop block is connected to a fixed block vertically arranged on the workbench; the rotation angle of the stop block relative to its pivot connection with the fixed block is 1 - 3°.

3. The paper pressing and locking mechanism according to claim 1 or 2, characterized in that, The short rod sequentially passes through the stop block and the workbench, and is pivotally connected to a swing rod placed below the workbench; a return spring is also sleeved on the short rod, and the return spring is arranged between the stop block and the workbench.

4. The paper pressing and locking mechanism according to claim 3, characterized in that, The stop shaft sequentially passes through the stop block and the workbench and is arranged; and when the paper pressing arm is at the highest position, the lower end surface of the stop shaft is embedded in a through - hole on the workbench.

5. The paper pressing and locking mechanism according to claim 4, characterized in that, A limiting rod for horizontally placing it is also provided below the stop block, and the limiting rod is configured on the side close to the short rod in the length direction of the stop block.

6. The paper pressing and locking mechanism according to claim 4 or 5, characterized in that, A cam is provided below the workbench, and the cam is arranged on the base and close to the side of the stop block; the base and the workbench are interconnected through a frame; an upward - facing arc - shaped boss is configured on the top edge of the cam.

7. The paper pressing and locking mechanism according to claim 6, wherein, The swing rod is pivotally connected to the frame, and a roller is provided at one end of the swing rod away from the short rod and arranged towards the side of the boss; the pivot connection point of the frame and the swing rod, the length from it to the roller is greater than its length to the connection point of the swing rod and the short rod.

8. A paper pressing and locking mechanism according to any one of claims 1-2, 4-5, and 7, characterized in that, The long rod is vertically arranged above the stop block and is placed on the top of a frame body on the workbench; A positioning pin arranged in parallel with the long rod is also provided on the top of the frame body, and the positioning pin is arranged downward.

9. The paper pressing and locking mechanism according to claim 8, characterized in that, A positioning sleeve in contact and cooperation with the lower end surface of the positioning pin is also sleeved on the long rod, and the positioning sleeve is of an annular structure; The upper end surface of the positioning sleeve is constructed as an inclined surface; Controlling the long rod to rotate and making the highest point of the positioning sleeve contact the lower end surface of the positioning pin, the lower bottom surface of the long rod abuts against the stop block, and making the stop block in a horizontal state.

10. A binding machine, characterized in that, It is equipped with the locking mechanism as described in any one of claims 1 - 9.

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