Folding machine with improved action of separating claws

Abstract

The application discloses a folding machine with improved action mode of separating claw, which comprises a folding roller and a separating claw located below the folding roller, the separating claw is connected to a swing shaft of a swing arm, during the process that the swing shaft drives the separating claw to move towards the direction of a paper material receiving position, the swing arm abuts against a first abutting part and moves relative to the first abutting part, the profile shape of the part of the swing arm in contact with the first abutting part causes the swing arm abutting against the first abutting part to rotate while moving relative to the first abutting part, so that the separating claw is driven by the swing arm to rotate around the swing shaft, and the separating claw rotates while moving during the process of moving towards the direction of the paper material receiving position. The application has the advantages of reducing the time required by the action of the separating claw, improving the working efficiency of the folding machine, and avoiding the misalignment of the stacked paper materials caused by the edge of the paper materials during the process of entering the paper material receiving position.

Description

Technical Field

[0001] This invention relates to a folding machine for producing folded paper. Background Technology

[0002] A folding machine for producing folded paper has two parallel folding rollers, and a paper support unit is located directly below the gap between the two folding rollers to support the stack of paper. When the folding machine is working, a continuous sheet of paper passes through the gap between the two folding rollers, and the two folding rollers, which rotate synchronously, cut and fold the continuous sheet of paper into individual sheets. The formed sheets of paper fall down and are stacked on the paper support unit.

[0003] To ensure that the paper falling onto the receiving unit separates into individual stacks whenever a certain number of sheets are stacked, a splitting claw is installed below the folding roller. Whenever the predetermined number of sheets of paper are stacked on the receiving unit, the splitting claw engages its receiving position, inserting itself into the stacked paper. This allows subsequent sheets falling from the folding roller to temporarily accumulate on the splitting claw, thus separating a stack. Once other mechanisms in the folding machine remove the entire stack from the receiving unit, the receiving unit returns to its original position, and the splitting claw retracts its receiving position. The paper temporarily stacked on the splitting claw is then transferred back to the receiving unit, and subsequent sheets falling from the folding roller continue to accumulate on the receiving unit until a new stack is formed. This cycle repeats, with the splitting claw repeatedly engaging and disengaging from the receiving position, thus transferring individual stacks of paper from the receiving unit.

[0004] In existing folding machines, the action of the folding claw entering the paper receiving position consists of two steps: movement and rotation. The folding claw rotates before touching the paper, and then performs a simple translational movement until it is inserted into the paper. This step-by-step action of the folding claw is not only time-consuming, but also, during the insertion process, the folding claw, which only performs translational movement, is prone to hitting the edge of the paper, causing misalignment. Summary of the Invention

[0005] The purpose of this invention is to provide a folding machine with an improved folding claw operation mode, so as to shorten the operation time of the folding claw entering the paper receiving position and avoid misalignment of the paper during the insertion of the folding claw.

[0006] The present application is implemented as follows: a folding machine with improved action mode of separating claw, comprising a folding roller and a separating claw located below the folding roller, the separating claw is connected with a swing arm, the separating claw is connected on the swing axis of the swing arm, and the swing axis drives the separating claw to reciprocate in the direction of entering and exiting the paper material receiving position; in the process of the swing axis driving the separating claw to move in the direction of entering the paper material receiving position, the swing arm abuts against the first abutting member and moves relative to the first abutting member, the profile shape of the part of the swing arm in contact with the first abutting member causes the swing arm abutting against the first abutting member to rotate while moving relative to the first abutting member, so that the swing arm drives the separating claw to rotate around the swing axis, and the separating claw rotates while moving in the direction of entering the paper material receiving position.

[0007] As the best mode, the lower edge of the swing arm is in contact with the first abutting member, and the profile shape of the lower edge in contact with the first abutting member is an upwardly arched arc.

[0008] As the best mode, in the process of the swing axis driving the separating claw to move in the direction of exiting the paper material receiving position, the swing arm abuts against the second abutting member and moves relative to the second abutting member, and the profile shape of the part of the swing arm in contact with the second abutting member causes the swing arm abutting against the second abutting member to only move without rotating relative to the second abutting member, so that the separating claw only moves without rotating in the direction of exiting the paper material receiving position.

[0009] As the best mode, the upper edge of the swing arm is in contact with the second abutting member, and the profile shape of the upper edge in contact with the second abutting member is a straight line, which is parallel to the moving direction of the swing axis driving the separating claw to exit the paper material receiving position in the state of the upper edge abutting against the second abutting member.

[0010] As the best mode, when the swing axis drives the separating claw to just reach the paper material receiving position, the upper edge of the swing arm just contacts the second abutting member.

[0011] As the best mode, the second abutting member has a through hole, the swing arm passes through the through hole and can swing in the through hole, and the first abutting member is installed in the through hole.

[0012] As the best mode, the swing axis is rotationally connected with a sliding block, the sliding block is slidingly connected with a guide rail, and the swing axis is driven to move by the sliding block sliding along the guide rail.

[0013] As the best mode of embodiment, the swing arm, the guide rail, the first abutting piece and the second abutting piece are connected to the lifting seat, the lifting seat is slidingly connected to the frame of the folding machine and can slide up and down, and the lifting seat drives the guide rail, the first abutting piece and the second abutting piece to lift together.

[0014] As the best mode of embodiment, the swing shaft is connected to the air cylinder, and the swing shaft is driven by the air cylinder to rotate.

[0015] As the best mode of embodiment, the top of the separating claw is always lower than the bottom of the folding roller, and the roller surface of the folding roller does not have a ring groove for receiving the separating claw.

[0016] The separating claw rotates while moving, which reduces the time required for the action of the separating claw and improves the working efficiency of the folding machine. Furthermore, the separating claw moves and rotates while entering the paper receiving position, so that the separating claw can be more smoothly inserted into the paper. In this process, even if the separating claw hits the edge of the paper, the rotating separating claw can quickly escape from the edge of the paper, thereby avoiding misalignment of the paper. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of embodiment one of the present application;

[0018] Figures 2-3 is a schematic diagram of the action process of the separating claw entering the paper receiving position;

[0019] Figure 4 is a schematic diagram of the paper receiving member leaving the position of receiving the paper;

[0020] Figures 5-7 is a schematic diagram of the action process of the separating claw exiting the paper receiving position;

[0021] Figure 8 is a schematic diagram of another shape of the lower edge of the swing arm;

[0022] Figure 9 is a three-dimensional schematic diagram of an embodiment of the mechanism for driving the swing shaft to move and rotate;

[0023] Figure 10 is Figure 9 is a sectional view of the separating claw, the swing shaft, the swing arm, the first abutting piece and the second abutting piece in

[0024] Figure 11 is a structural schematic diagram of embodiment two of the present application;

[0025] Figures 12-15 is a schematic diagram of the cooperation process of the paper inserting claw and the separating claw.

[0026] Figure 16This is a schematic diagram of the structure of Embodiment 3 of the present invention. Detailed Implementation

[0027] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0028] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediary component present. Conversely, when a component is said to be "directly on" another component, there is no intermediary component.

[0029] It should be noted that the serial numbers such as "first" and "second" in this invention do not represent a specific quantity or order, but are only used to distinguish names.

[0030] It should be noted that the actual structure of the folding machine is quite complex. In order to clearly illustrate the structure related to the purpose of this invention, the specification and drawings only explain and show part of the structure of the folding machine. Other structures unrelated to the purpose of this invention adopt the same structure as existing folding machines.

[0031] Example 1

[0032] See Figure 1 The folding machine includes two horizontally arranged parallel folding rollers 1. A folding claw 2 is located below the folding rollers 1, and a paper receiving component 3 is located directly below the gap between the two folding rollers. During operation, two continuous sheets of paper from different sources pass continuously through the gap between the two folding rollers 1. The two folding rollers 1 rotate synchronously in opposite directions, cutting and folding the paper passing through the gap into individual sheets. The folded paper falls onto the paper receiving component 3 and stacks into a paper stack. Whenever the paper stack on the paper receiving component 3 reaches a predetermined number of sheets, the folding claw 2 enters the paper receiving position, which is the start of the folding process. Figures 1-3 The action shown is that the overlapping claw 2 moves along a direction parallel to the dotted line in the figure while moving towards... Figure 2 Rotate in the direction indicated by the arrow until the overlapping claw 2 is as shown. Figure 3 The paper is inserted into the folded paper falling from the folding roller 1. Subsequently, the paper falling from the folding roller 1 is temporarily stacked on the separating claw 2, while a separate stack of paper is separated on the paper support 3. Next, other mechanisms in the folding machine (not shown) proceed as follows... Figure 4 As shown, move the paper support 3 to another position and remove the stack of paper on the paper support 3, then proceed as follows. Figure 5The shown action moves the paper receiving member 3 back to a position to continue receiving paper. Then, the separating claw 2 exits the paper receiving position, that is, performs Figures 5-7 The shown action moves the paper pile previously temporarily stacked on the separating claw 2 to the paper receiving member 3, so that the paper subsequently falling from the folding roller 1 continues to be stacked on the paper receiving member 3 until a new paper pile is formed on the paper receiving member 3. The folding machine then returns to Figure 1 The shown state. It should be noted that the separating claw 2 and the paper receiving member 3 are staggered in the direction perpendicular to the drawing, so Figure 5 and Figure 6 the separating claw 2 and the paper receiving member 3 do not interfere with each other in movement.

[0033] In the action of the separating claw 2 entering the paper receiving position, that is, in the action of Figures 1-3 , the separating claw 2 rotates while moving, so as to have high action efficiency, and even if the end of the separating claw 2 hits the edge of the paper in this process, the rotating separating claw 2 can make its end quickly away from the edge of the paper, avoiding the misalignment of the paper. To achieve this effect, referring to Figure 1 , the separating claw 2 is connected with a swing arm 4, and the separating claw 2 and the swing arm 4 are both fixed on a swing shaft 5 of the swing arm 4. In the action of Figures 1-3 , the swing shaft 5 drives the separating claw 2 to move in the direction of entering the paper receiving position, that is, to move toward the left along the direction parallel to the dashed line in the drawing; in the action of Figures 5-7 , the swing shaft 5 drives the separating claw 2 to move in the direction of exiting the paper receiving position, that is, to move toward the right along the direction parallel to the dashed line in the drawing. In the process of the swing shaft 5 driving the separating claw 2 to move in the direction of entering the paper receiving position, as shown in Figures 1-3 , the lower edge 4a of the swing arm 4 abuts against and moves relative to the first abutting member 6. The profile shape of the lower edge 4a in contact with the first abutting member 6 is an upwardly arched arc, and the shape of the arc causes the swing arm 4 to rotate while moving relative to the first abutting member 6. The rotating swing arm 4 drives the separating claw 2 to rotate around the central axis O of the swing shaft 5, that is, to rotate around the central axis O of the swing shaft 5 in the direction indicated by the arrow, so that the separating claw 2 rotates while moving in the direction of entering the paper receiving position. Figure 2

[0034] It should be noted that the profile shape of the lower edge 4a of the swing arm 4 in contact with the first abutting member 6 can also be a straight line. As shown in Figure 8 , the profile shape of the lower edge 4a of the swing arm 4 in contact with the first abutting member 6 is a straight line, and the straight line forms an angle a with the moving direction of the swing shaft 5, so that the swing arm 4 abutting against the first abutting member 6 rotates while moving relative to the first abutting member 6. ​

[0035] The first abutment 6 can be a fixing pin or the like. In the preferred embodiment, the first abutment 6 is a pulley to reduce the friction between it and the swing arm 4.

[0036] As the best implementation method, during the process of the stacking claw 2 retracting from the paper receiving position, that is, during Figures 5-7 During the illustrated operation, it is best to move the stacking claw 2 without rotating it, so that the stack of paper on the stacking claw 2 can be transferred more smoothly to the paper support 3. To achieve this effect, as follows: Figure 1 As shown, the folding machine is equipped with a second abutment 7. During the process of the swing shaft 5 driving the folding claw 2 to move in the direction of exiting the paper receiving position, that is... Figures 5-7 During the illustrated movement, the upper edge 4b ​​of the swing arm 4 abuts against the second abutment 7 and moves relative to the second abutment 7. The contour shape of the upper edge 4b ​​in contact with the second abutment 7 is a straight line. In the state where the upper edge 4b ​​abuts against the second abutment 7, as shown... Figure 3 As shown, the straight profile of the upper edge 4b ​​that contacts the second abutment 7 is parallel to the direction of movement of the swing axis 5 shown by the dotted line in the figure, so that the folding claw 2 only moves and does not rotate during the process of exiting the paper receiving position.

[0037] As the preferred implementation, when the swing shaft 5 drives the stacking claw 2 to just reach the paper receiving position, such as Figure 3 As shown, the upper edge 4b ​​of the swing arm 4 just contacts the second abutment 7. In this way, the swing arm 4 can more smoothly transition from the state of abutting against the first abutment 6 to the state of abutting against the second abutment 7, so that the paper is stacked more smoothly on the stacking claw 2.

[0038] For the best implementation, see also Figure 9 , Figure 10 The second abutment 7 has a through hole 7a through which the swing arm 4 passes and can swing. The first abutment 6 is installed in the through hole 7a. This structure makes the assembly of the swing arm 4, the first abutment 6, and the second abutment 7 the most compact.

[0039] It should be noted that, as a degraded implementation, the present invention may also omit the second abutment 7, and during the process of the stacking claw 2 entering and exiting the paper receiving position, the lower edge 4a of the swing arm 4 is always abutted against the first abutment 6.

[0040] To achieve the movement of the swing axis 5, see [link to relevant documentation]. Figure 9The end of the swing shaft 5 is rotatably connected to the slider 8, and the axis of rotation of this rotatable connection is the central axis of the swing shaft 5. The slider 8 is slidably connected to the guide rail 9, and the swing shaft 5 is moved by the slider 8 sliding along the guide rail 9. More specifically, a cylinder or a gear rack, transmission belt, chain drive, or other mechanism (not shown in the figure) can be used to drive the slider 8 to slide along the guide rail 9.

[0041] When the stacked claws 2 are as follows Figure 3 After reaching the paper receiving position, the paper falling from the folding roller 1 will begin to stack on the stacking claw 2. To prevent the stacked paper on the stacking claw 2 from becoming too high and affecting the paper output from the folding roller 1, it is best to make the stacking claw 2 gradually descend as the height of the paper stack increases. To achieve this effect, see [link to documentation]. Figure 9 The guide rail 9, the first abutment 6, and the second abutment 7 are connected to the lifting base 10. The lifting base 10 is slidably connected to the frame of the folding machine and can slide up and down. The lifting base 10 drives the guide rail 9, the first abutment 6, and the second abutment 7 to rise and fall together, thereby causing the slider 8, the swing shaft 5, and the folding claw 2 to rise and fall together as well. Specifically, when the folding claw 2... Figure 3 As shown, after reaching the paper receiving position, as the height of the paper stack on the splitting claw 2 increases, the paper... Figure 9 The lifting seat 10 shown drives the stacking claw 2 to gradually descend; when the stacking claw 2... Figure 7 After exiting the paper receiving position as shown, by Figure 9 The lifting seat 10 shown drives the stacking claw 2 to rise and reset to its original position. Figure 1 The height shown. The lifting movement of the lifting seat 10 can be driven and controlled by a transmission belt, chain drive, or gear and rack mechanism (not shown in the figure).

[0042] It should be noted that, as a degraded implementation, the folding claw 2 does not necessarily need to gradually descend as the height of the stacked paper increases. This is because the paper falling from the folding roller 1 only... Figures 3-5 During the process shown, the paper is temporarily stacked on the splitting claw 2. As long as this process is relatively short, the splitting claw 2 does not need to gradually descend as the height of the stacked paper increases. In this case, the [missing information - likely a typo, should be "omitted"]. Figure 9 The lifting seat 10 shown directly fixes the guide rail 9, the first abutment 6, and the second abutment 7 to the frame of the folding machine.

[0043] To control the swing arm 4 to rest against the first abutment 6 or the second abutment 7, see [link / reference] Figure 9 The swing shaft 5 is connected to the cylinder 14, and the cylinder 14 drives the swing shaft 5 to rotate, thereby controlling the swing arm 4 to abut against the first abutment 6 or against the second abutment 7. Specifically, in Figures 1-3 During the process shown, cylinder 14 drives the swing shaft 5 to rotate, causing the lower edge 4a of the swing arm 4 to always abut against the first abutment 6;Figures 4-7 During the process shown, cylinder 14 drives the swing shaft 5 to rotate, causing the upper edge 4b ​​of the swing arm 4 to always abut against the second abutment 7; from Figure 7 Back Figure 1 During the process shown, the cylinder 14 drives the swing shaft 5 to rotate, causing the lower edge 4a of the swing arm 4 to abut against the first abutment 6 again.

[0044] Cylinder 14 can be as Figure 9 The cylinder 14 is connected to the slider 8, causing it to move along with the slider 8. Alternatively, the cylinder 14 can be directly connected to the lifting seat 10 instead of moving with the slider 8. Besides using a cylinder, other mechanisms such as gears and racks can also be used to control the rotation of the swing shaft 5.

[0045] It should be noted that, Figure 9 Only the slider 8, guide rail 9, and lifting seat 10 located at one end of the swing shaft 5 are shown. In fact, the slider 8, guide rail 9, and lifting seat 10 with the same structure can also be symmetrically arranged at the other end of the swing shaft 5.

[0046] As the best implementation method, such as Figures 1-7 As shown, no matter where the folding claw moves, the top of the folding claw 2 is always lower than the bottom of the folding roller 1. This eliminates the need to open an annular groove on the roller surface of the folding roller 1 to receive the folding claw 2 in order to prevent the top of the folding claw 2 from colliding with the folding roller 1, thus reducing the processing difficulty and cost of the folding roller.

[0047] Example 2

[0048] See Figure 11 This embodiment adds an air nozzle 11 to the stacking claw 2 based on embodiment one, and adds a paper insertion claw 12 to the left side of the paper receiving component 3. The function of the paper insertion claw 12 is to fold the tail of the bottom sheet of each stack of paper. The operating principle of the paper insertion claw 12 folding the tail of the paper is as follows: Figure 12 As shown, whenever paper begins to stack on the stacking claw 2 and the paper receiving component 3 has moved away from the paper receiving position, the tail 13 of the bottommost sheet of paper stacked on the stacking claw 2 hangs down from the edge of the stacking claw 2. The paper insertion claw 12 moves to a position touching the tail 13 of the paper. At the same time, the air nozzle 11 blows air toward the tail 13 of the paper, thus bending the tail 13 of the paper. Figure 12 The half-fold shape shown. When the paper carrier 3 passes through... Figure 13 , Figure 14 , Figure 15After the process shown in the diagram returns to its starting position, the paper inserter 12 is pulled out from the bottom of the paper stack, and the paper stack piled on the folding claw 2 is transferred to the paper support 3. Thus, the half-folded tail 13 of the paper at the bottom of the stack is pressed against the bottom of the stack, completing the half-folding process of the paper tail. Afterwards, the folding claw 2 and the paper inserter 12 return to their starting positions. Figure 11 The location is shown. The structure and operation of other components in this embodiment are the same as in Embodiment 1, and will not be described again.

[0049] Example 3

[0050] See Figure 16 This embodiment, based on Embodiment 2, uses the same mechanism as the one that drives the stacking claw 2 to drive the paper insertion claw 12. This embodiment is equivalent to setting symmetrical mechanisms on both sides of the paper receiving component 3, except that the left side has the paper insertion claw 12 instead of the stacking claw. The function and operation of the paper insertion claw 12 are the same as in Embodiment 2, and will not be repeated here.

[0051] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. The protection scope of this patent should be determined by the appended claims.

Claims

1. A folding machine with improved folding claw operation, comprising a folding roller and a folding claw located below the folding roller, characterized in that: folding... The folding claw is connected to a swing arm, and the splitting claw is connected to the swing shaft of the swing arm. The swing shaft drives the splitting claw to reciprocate in the direction of entering and exiting the paper receiving position. During the movement of the splitting claw towards the paper receiving position, the swing arm abuts against a first abutment and moves relative to the first abutment. The contour shape of the part of the swing arm that contacts the first abutment causes the swing arm that abuts against the first abutment to rotate while moving relative to the first abutment. Thus, the swing arm drives the splitting claw to rotate around the swing shaft, so that the splitting claw moves and rotates simultaneously during the movement towards the paper receiving position. During the movement of the splitting claw towards the exiting paper receiving position, the swing arm abuts against a second abutment and moves relative to the second abutment. The contour shape of the part of the swing arm that contacts the second abutment causes the swing arm that abuts against the second abutment to move without rotating during the movement relative to the second abutment. Thus, the splitting claw moves without rotating during the movement towards the exiting paper receiving position.

2. A folding machine with improved folding claw action as described in claim 1, characterized in that: The lower edge of the swing arm contacts the first abutment, and the outline of the lower edge in contact with the first abutment is an upward-arching arc.

3. The folding machine with improved folding claw action mode as described in claim 1, characterized in that: The upper edge of the swing arm contacts the second abutment. The outline of the upper edge in contact with the second abutment is a straight line. When the upper edge abuts the second abutment, the straight line is parallel to the direction of movement of the swing axis driving the stacking claw to exit the paper receiving position.

4. A folding machine with improved folding claw action as described in claim 3, characterized in that: When the swing shaft drives the stacking claw to reach the paper receiving position, the upper edge of the swing arm just contacts the second abutment.

5. A folding machine with improved folding claw action as described in claim 1, characterized in that: The second abutment has a through hole through which the swing arm passes and can swing within the through hole, and the first abutment is installed within the through hole.

6. A folding machine with improved folding claw action as described in claim 1, characterized in that: The swing shaft is rotatably connected to the slider, and the slider is slidably connected to the guide rail. The swing shaft is moved by the slider sliding along the guide rail.

7. A folding machine with improved folding claw action as described in claim 6, characterized in that: The swing arm, the guide rail, the first abutment, and the second abutment are connected to the lifting seat. The lifting seat is slidably connected to the frame of the folding machine and can slide up and down. The lifting seat drives the guide rail, the first abutment, and the second abutment to rise and fall together.

8. A folding machine with improved folding claw action as described in claim 1, characterized in that: The swing shaft is connected to the cylinder, and the cylinder drives the swing shaft to rotate.

9. A folding machine with improved folding claw action as described in claim 1, characterized in that: The top of the folding claw is always lower than the bottom of the folding roller, and the roller surface of the folding roller does not have annular grooves for receiving the folding claw.

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