Limiting mechanism of paper feeding machine

Abstract

The utility model discloses a paper conveying machine limiting mechanism which comprises a machine frame, a paper feeding space formed on the machine frame and provided with an inlet on one side and two limiting side plates arranged on one side, right corresponding to the inlet of the paper feeding space, of the paper feeding space, and the two limiting side plates move oppositely or oppositely in the horizontal direction perpendicular to the inlet of the paper feeding space. The two limiting side plates are connected with elastic pieces driving the two limiting side plates to move oppositely, each limiting side plate is provided with a locking assembly moving along with the corresponding limiting side plate, and two control assemblies corresponding to the two locking assemblies and used for controlling the locking assemblies are arranged on the outer side of the rack. The control assembly can drive the two limiting side plates to move oppositely. The utility model has the following advantages and effects: the adjustment is simpler and more convenient, so that the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of paper feeders, in particular to a limiting mechanism of a paper feeder. Background Art

[0002] Sheet feeders are widely used in sheet-fed printing machinery and equipment such as screen printing machines, gravure printing machines, fully automatic die-cutting machines, and paper laminating machines. A paper stacking table for placing paper piles is set at the entrance section, and the paper is separated and fed into the paper feeder table in sequence through the feeder head. As the paper is continuously output, the paper pile monitoring system of the paper feeder increases the height of the paper pile at any time to ensure uninterrupted paper feeding.

[0003] The existing paper feeder includes a paper loading space, a lifting frame arranged in the paper loading space, a lifting assembly connected to the lifting frame, and a limit assembly arranged on the side of the paper loading space corresponding to the entrance of the paper loading space. The limit assembly includes two limit side plates that move horizontally toward or away from each other in a direction perpendicular to the entrance of the paper loading space and a driving screw connecting the two limit side plates. The paper stack is placed on a transport trolley, and the paper stack and the conveying trolley are transported to the top of the lifting frame by the transport trolley. Then the driving screw is rotated to drive the two limit side plates to move so that the two limit side plates are clamped and limited on the left and right sides of the paper stack. Finally, the lifting assembly is used to lift the paper stack and the conveying trolley so that the feeder head can grab the paper stack and transfer it to the conveying platform. The horizontal movement of the paper stack is limited by setting the limit side plates, thereby improving the stability of the placed paper stack. However, due to the large difference in transmission ratio of the method of rotating the screw rod to drive the limit side plate to move, that is, the screw rod that rotates multiple times can only drive the limit side plate to move a short distance, so when the size of the paper stacks between batches varies greatly, it is necessary to achieve long-distance adjustment of the limit side plate, and the above structure will increase the workload of the operation in disguise, thereby greatly reducing the work efficiency. Based on the above problem, this improvement was born. Utility Model Content

[0004] The utility model aims to provide a limiting mechanism for a paper feeder, which is easier to adjust, thereby greatly improving work efficiency.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a paper feeder limiting mechanism, comprising a frame, a paper loading space formed on the frame and having an entrance on one side, and two limiting side plates arranged on the paper loading space corresponding to one side of the entrance of the paper loading space, the two limiting side plates move horizontally toward or away from each other in a direction perpendicular to the entrance of the paper loading space, the two limiting side plates are connected with elastic members driving the two limiting side plates to move toward each other, each of the limiting side plates is provided with a locking assembly that moves with the limiting side plate, two groups of control assemblies corresponding to the two locking assemblies and used to control the locking assemblies are provided on the outer side of the frame, and the control assembly can drive the two limiting side plates to move away from each other.

[0006] By adopting the above technical solution, when the transport trolley transports the paper stack into the paper loading space, the locking component is unlocked by the control component, so that the two limiting side plates can move toward each other under the action of the elastic member and then respectively limit each other on the left and right sides of the paper stack. Then, the control component controls the locking component to lock, so as to limit the movement of the two limiting side plates toward each other, so as to prevent the two sides of the paper stack from being subjected to the long-term pressure exerted on the paper stack by the elastic member through the limiting side plates. When the number of paper stacks is reduced by this setting structure, the deformation of the last paper stack will not be caused by the long-term squeezing of the two limiting side plates, so as to ensure the feasibility of the structure. The above structure makes it easier to adjust the limiting mechanism, thereby greatly improving work efficiency.

[0007] It is further configured as follows: a locking rod extending along the movement path of the limiting side plate is fixedly arranged on the frame, and the locking assembly includes a locking block that moves with the limiting side plate and slides with the locking rod, a locking claw rotatably arranged on the locking block, and a locking spring that drives the locking claw to press against the locking rod to form a lock.

[0008] By adopting the above technical solution, the locking claw is driven by the pressing spring to press against the locking rod, and the locking block and the limiting side plate are locked by the friction force generated by the pressing. This method has low processing cost and is stepless locking.

[0009] It is further configured that: when the locking claw is pressed against the locking rod, the locking claw is inclined along one side of the axis of the locking rod and limits the two limiting side plates from moving toward each other, and a plurality of locking teeth are provided at the position where the locking claw presses against the locking rod.

[0010] By adopting the above technical solution, the locking claw is set to an inclined structure to form a one-way locking of the locking block, so as to cooperate with other structures to control the locking assembly and the limiting side plate to achieve reciprocating motion. The locking teeth are set to increase the concentrated stress of the counteraction, so as to achieve a more stable locking purpose.

[0011] It is further configured that: the control component includes a control rope connected to the locking claw and used to drive the locking claw to rotate opposite to the locking rod, and a fixing structure, the control rope extends in opposite directions of the two limiting side plates and the fixing structure is used to fix the control rope to limit its movement toward one side of the limiting side plate.

[0012] By adopting the above technical solution, the elastic member drives the locking block and the limiting side plate to move toward each other. When the limiting side plates abut against the two sides of the paper pile, the control rope releases the force acting on the locking claw, so that the locking claw abuts against the locking rod under the action of the tightening spring, thereby forming a limiting lock of the two limiting side plates in the opposite direction. When the distance between the two limiting side plates needs to be adjusted, the control rope is pulled to drive the locking claw to rotate away from the locking rod, which can unlock and drive the locking block and the limiting side plate to move away from each other. Then, the control rope is fixed by the fixed structure, and the position of the limiting side plate after the limit is pulled is removed.

[0013] It is further configured as follows: the fixing structure includes a plurality of fixing holes arranged on the control rope and arranged along the length direction thereof, and a fixing rod arranged on the frame and used for being inserted into the fixing holes.

[0014] By adopting the above technical solution, the fixing hole is sleeved on the fixing rod, and the locking block can be locked in one direction through the control rope to limit the movement of the two locking blocks towards each other.

[0015] It is further configured that: the position where the locking rod and the locking claw abut against each other forms an abutting plane, the abutting plane is extended along the movement direction of the locking block to form a long strip, and the abutting plane forms a rough friction surface.

[0016] By adopting the above technical solution, the setting of the abutting plane can increase the abutting contact surface with the locking claw, thereby increasing the friction resistance generated by the abutment between the two, and the friction resistance can be further increased by setting the abutting plane as a rough friction surface to improve the locking stability.

[0017] It is further configured as follows: a control rope of one of the control components extends to one side of a control rope of another control component.

[0018] By adopting the above technical solution, the two limiting side plates can be controlled on a single side through this setting structure, making the control operation more convenient.

[0019] In summary, the utility model has the following beneficial effects: the utility model is easier to adjust, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 It is a partial exploded view of an embodiment;

[0022] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0023] Figure 4It is a partial structural schematic diagram of an embodiment;

[0024] Figure 5 for Figure 4 Enlarged view of middle part B;

[0025] Figure 6 FIG. 2 is another partial structural diagram of an embodiment.

[0026] In the figure: 1, frame; 2, paper loading space; 3, limiting side plate; 4, elastic member; 5, locking assembly; 51, locking block; 52, locking claw; 6, control assembly; 61, control rope; 62, fixing hole; 63, fixing rod; 7, locking rod; 8, locking tooth; 9, abutting plane. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] refer to Figures 1 to 6 A paper feeder limiting mechanism includes a frame 1, a paper loading space 2 formed on the frame 1 and having an entrance on one side, and two limiting side plates 3 arranged on the paper loading space 2 corresponding to the side of the entrance of the paper loading space 2; the two limiting side plates 3 move horizontally toward or away from each other in a direction perpendicular to the entrance of the paper loading space 2. Both limiting side plates 3 are connected with elastic members 4 for driving the two limiting side plates 3 to move toward each other, and each limiting side plate 3 is provided with a locking assembly 5 that moves with the limiting side plate 3. Two groups of control assemblies 6 corresponding to the two locking assemblies 5 and used to control the locking assemblies 5 are arranged on the outer side of the frame 1, and the control assembly 6 can drive the two limiting side plates 3 to move away from each other.

[0029] The frame 1 is fixedly provided with a locking rod 7 extending along the movement path of the limiting side plate 3. There are two locking rods 7, which correspond to two sets of locking components 5 respectively. The locking component 5 includes a locking block 51 fixedly provided on the limiting side plate 3, a locking claw 52 rotatably provided on the locking block 51 through a rotating shaft, and a pressing spring that drives the locking claw 52 to press against the locking rod 7 to form a locking. The locking block 51 is sleeved on the locking rod 7 and slidably cooperates with it. The pressing spring is a torsion spring sleeved on the rotating shaft, one end of which is fixedly connected to the locking block 51, and the other end of which is fixedly connected to the locking claw 52. The elastic member 4 is a spring sleeved on the locking rod 7, and the two ends of the spring press against the locking block 51 and the frame 1 respectively; the elastic force of the pressing spring is smaller than that of the elastic member 4.

[0030] When the locking claw 52 is pressed against the locking rod 7, the locking claw 52 is inclined along one side of the axis of the locking rod 7 and is used to limit the two limiting side plates 3 from moving toward each other. The position where the locking claw 52 is pressed against the locking rod 7 is integrally provided with a plurality of locking teeth 8. The control assembly 6 includes a control rope 61 and a fixing structure fixedly connected to the locking claw 52 for driving the locking claw 52 to rotate away from the locking rod 7. The control rope 61 extends in the opposite direction of the two limiting side plates 3 and passes through the frame 1. The fixing structure is used to fix the control rope 61 to limit its movement toward one side of the limiting side plate 3.

[0031] The fixing structure includes a plurality of fixing holes 62 arranged along the length of the control rope 61 and a fixing rod 63 fixed to the outer wall of the frame 1 and inserted into the fixing hole 62; the control rope 61 is a rope belt. The position where the locking rod 7 and the locking claw 52 abut against each other forms an abutting plane 9, which extends along the movement direction of the locking block 51 to form a long strip, and the abutting plane 9 is processed by sandblasting to form a rough friction surface. The free end of one of the control ropes 61 extends to one side of the other control rope 61.

[0032] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A paper feeder limiting mechanism, comprising a frame (1), a paper loading space (2) formed on the frame (1) and having an entrance on one side, and two limiting side plates (3) arranged on the paper loading space (2) corresponding to one side of the entrance of the paper loading space (2), wherein the two limiting side plates (3) move horizontally toward or away from each other in a direction perpendicular to the entrance of the paper loading space (2), characterized in that: The two limiting side plates (3) are both connected with an elastic member (4) for driving the two limiting side plates (3) to move toward each other, each of the limiting side plates (3) is provided with a locking assembly (5) that moves with the limiting side plate (3), and the outer side of the frame (1) is provided with two groups of control assemblies (6) corresponding to the two locking assemblies (5) and used to control the locking assemblies (5), and the control assembly (6) can drive the two limiting side plates (3) to move away from each other.

2. The paper feeder limiting mechanism according to claim 1, characterized in that: A locking rod (7) extending along the movement path of the limiting side plate (3) is fixedly arranged on the frame (1); the locking assembly (5) comprises a locking block (51) moving with the limiting side plate (3) and slidingly cooperating with the locking rod (7), a locking claw (52) rotatably arranged on the locking block (51), and a pressing spring driving the locking claw (52) to press against the locking rod (7) to form a locking structure.

3. The paper feeder limiting mechanism according to claim 2, characterized in that: When the locking claw (52) is pressed against the locking rod (7), the locking claw (52) is inclined along one side of the axis of the locking rod (7) and restricts the two limiting side plates (3) from moving toward each other. A plurality of locking teeth (8) are provided at the position where the locking claw (52) presses against the locking rod (7).

4. The paper feeder limiting mechanism according to claim 3, characterized in that: The control assembly (6) comprises a control rope (61) connected to the locking claw (52) and used for driving the locking claw (52) to rotate in opposition to the locking rod (7), and a fixing structure, wherein the control rope (61) extends in opposite directions of the two limiting side plates (3), and the fixing structure is used for fixing the control rope (61) to restrict its movement toward one side of the limiting side plate (3).

5. The paper feeder limiting mechanism according to claim 4, characterized in that: The fixing structure comprises a plurality of fixing holes (62) arranged on the control rope (61) and arranged in a row along the length direction thereof, and a fixing rod (63) arranged on the frame (1) and used for being inserted into the fixing holes (62).

6. The paper feeder limiting mechanism according to claim 2, characterized in that: The position where the locking rod (7) and the locking claw (52) abut against each other forms an abutting plane (9), and the abutting plane (9) is extended along the movement direction of the locking block (51) to form a long strip, and the abutting plane (9) forms a rough friction surface.

7. The paper feeder limiting mechanism according to claim 4, characterized in that: The control rope (61) of one of the control components (6) extends to one side of the control rope (61) of another control component (6).

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