An overload protection assembly, device and slotter

Abstract

The present application relates to a kind of overload protection components, device and grooving machine.Overload protection components include support plate, movable plate, pivot on support plate, connecting arm rotatably connected with pivot, extension arm on one side of connecting arm, linkage rod articulated between adjacent extension arms and pull spring hung between linkage rod and support plate, the waist slot is opened in the bottom of movable plate, the top of connecting arm is provided with the convex shaft that enters the waist slot, and waist slot pushes convex shaft and drives connecting arm swing when movable plate slides, and connecting arm drives linkage rod displacement to stretch pull spring by extension arm.Overload protection device also includes support box and screw adjusting mechanism.Grooving machine includes the above device, bracket, second motor, grooving box, grooving cutter head and fixed plate.The present application satisfies movable plate self-adapting sliding compensation and accurate reset, and has static position adjustment and dynamic overload compensation function.

Description

Technical Field

[0001] This invention relates to the field of printing and binding equipment technology, specifically to an overload protection component, device, and slotting machine. Background Technology

[0002] In the prior art, such as the book-pushing safety device for a book-binding machine disclosed in patent CN107097556A, the book-pushing action is achieved through the cooperation of gears, connecting rods, swing rods and slotted cams, and an overload protection mechanism is provided at the end of the connecting rod; a conveyor channel with a sprocket overload protection device disclosed in patent CN224014615U, and the overload reset mechanism used in existing perfect binding lines, the overload protection is mostly achieved by using structures such as steel balls, compression springs or friction clutches to achieve disengagement and stop protection when overloaded.

[0003] However, the overload protection mechanisms in the aforementioned existing technologies can only stop the machine or passively buffer it after being triggered. They cannot enable the moving parts to adaptively slide under external forces to compensate for displacement during continuous operation of the equipment, nor can they automatically and accurately reset after the external force is removed. Especially in book slotting, when the spine thickness increases instantaneously due to folds or page turning, the existing mechanisms cannot achieve dynamic adaptive compensation without stopping the machine, which can easily cause the spine to jam or the equipment to be damaged. Summary of the Invention

[0004] This invention proposes an overload protection component, device, and grooving machine, which solves the problem of how to enable another component to adaptively slide under external force to compensate for displacement while the position of one component is relatively fixed, and to accurately reset after the external force is removed, while realizing the static position adjustment and dynamic overload compensation of the component.

[0005] The technical solution of this invention is implemented as follows:

[0006] An overload protection component includes a support plate and a movable plate disposed above the support plate and slidable relative to the support plate;

[0007] The support plate is provided with at least two rotating shafts, and each rotating shaft is rotatably connected to a connecting arm. An extension arm is provided on one side of the connecting arm, and a linkage rod is hinged between adjacent extension arms. A tension spring is connected between the linkage rod and the support plate.

[0008] The bottom of the movable plate is provided with a waist groove corresponding to each connecting arm. The top of each connecting arm is provided with a convex shaft that extends into the corresponding waist groove. When the movable plate slides under the action of external force, it drives the waist groove to move. The waist groove pushes the convex shaft to slide along the waist groove and drives the connecting arm to swing around the corresponding pivot. The connecting arm drives the linkage rod to move through the extension arm to stretch the tension spring.

[0009] Furthermore, the waist groove extends along the width direction of the movable plate.

[0010] Furthermore, the connecting arm includes a first end rotatably connected to a corresponding rotating shaft and a second end opposite to the first end, the convex shaft is disposed at the second end, and the extension arm extends outward from the side of the connecting arm.

[0011] Furthermore, the two ends of the linkage are respectively hinged to the ends of two adjacent extension arms.

[0012] An overload protection device includes a support box and the overload protection components;

[0013] The support plate is disposed inside the support box, the movable plate is mounted on the top of the support box, and at least one grooved plate is provided on each side of the support box. The two side edges of the movable plate are adapted to the grooves of the corresponding grooved plates and can slide along the grooves.

[0014] Furthermore, a lead screw and at least one sliding shaft are provided between the two inner side walls of the support box. The lead screw and the sliding shaft both pass through the support plate. The lead screw is threadedly connected to the support plate, and the sliding shaft is slidably adapted to the support plate. When the lead screw rotates, it drives the support plate to slide along the sliding shaft.

[0015] Furthermore, a first motor is provided on the outside of the support box, and toothed wheels are respectively provided on the output end of the first motor and the end of the lead screw, and the two toothed wheels are connected by a toothed belt drive.

[0016] A grooving machine includes the overload protection device and a support frame;

[0017] The bracket is equipped with a second motor and a slotting box. The slotting box is located above the second motor. The output end of the second motor passes through the bottom of the slotting box, extends into its interior, and is connected to a slotting cutter disc.

[0018] The support box is disposed on the side of the slotted box opposite to the fixed plate, and a gap is formed between the movable plate and the fixed plate, with the slotting cutter head located below the gap.

[0019] Furthermore, the bracket is used to be installed on one side of a conveying device, which moves the book by means of a book clip and causes the spine of the book to pass through the gap, and the grooving cutter head grooves the spine of the book passing through the gap.

[0020] The beneficial effects of the technical solution provided in this application are as follows:

[0021] 1. In this application, a groove is opened at the bottom of the movable plate, and a rotating shaft and a connecting arm rotatably connected to the rotating shaft are set on the support plate. The convex shaft at the top of the connecting arm extends into the groove. When the movable plate slides under the action of external force, the groove pushes the convex shaft to slide along the groove and drive the connecting arm to swing around the rotating shaft. Then, the extension arm drives the linkage rod to move to stretch the tension spring. Under the premise of keeping the position of the support plate relatively fixed, the above transmission chain enables the movable plate to adaptively slide with the external force to compensate for the displacement. After the external force is released, the tension spring drives the movable plate to reset in the opposite direction through the linkage rod, extension arm and connecting arm.

[0022] 2. In this application, by setting a lead screw and a sliding shaft through the support plate inside the support box, the lead screw can drive the support plate to slide along the sliding shaft when it rotates. Then, the movable plate moves relative to the support box through the connecting arm and the convex shaft. This allows for static adjustment of the gap between the movable plate and the fixed plate to adapt to thickness changes in different batches, and also enables dynamic overload compensation for the instantaneous increase in thickness of individual books in the same batch due to creases or page turning.

[0023] 3. In this application, by setting the above-mentioned overload protection device on one side of the slotting box and making the gap between the movable plate and the fixed plate directly opposite the slotting cutter disc, when the conveying equipment drives the spine of the book through the gap via the book clip, the slotting cutter disc slots the dynamically passing spine, so as to achieve reliable protection against instantaneous overload of the spine in the high-speed dynamic feeding scenario of the perfect binding machine. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overload protection component of the present invention;

[0026] Figure 2 This is an exploded view of the overload protection component of the present invention;

[0027] Figure 3 This is a schematic diagram of the overload protection device of the present invention;

[0028] Figure 4 This is an exploded view of the overload protection device of the present invention;

[0029] Figure 5 This is a schematic diagram of the grooving machine of the present invention;

[0030] Figure 6 This is an exploded view of the grooving machine of the present invention.

[0031] In the diagram: 1. Support plate, 2. Rotating shaft, 3. Connecting arm, 4. Extension arm, 5. Linkage rod, 6. Movable plate, 7. Waist groove, 8. Tension spring, 9. Support box, 10. Slotted plate, 11. Lead screw, 12. Sliding shaft, 13. First motor, 14. Toothed belt, 15. Bracket, 16. Second motor, 17. Slotting box, 18. Slotting cutter head, 19. Fixing plate. Detailed Implementation

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1 and Figure 2 As shown, the present invention provides an overload protection component, including a support plate 1 and a movable plate 6 disposed above the support plate 1 and slidable relative to the support plate 1. The support plate 1 serves as the mounting reference for the entire overload protection component and typically maintains a relatively fixed position during use.

[0034] At least two pivots 2 are provided on the top of the support plate 1, and each pivot 2 is fixedly installed on the support plate 1. A connecting arm 3 is rotatably connected to each pivot 2, and the connecting arm 3 can swing freely around the corresponding pivot 2.

[0035] Furthermore, each connecting arm 3 is provided with an extension arm 4 on one side, which extends outward from the side of the connecting arm 3. A linkage rod 5 is hinged between adjacent extension arms 4, and the two ends of the linkage rod 5 are respectively hinged to the ends of the two adjacent extension arms 4, so that each connecting arm 3 forms a linked swing system through the extension arm 4 and the linkage rod 5.

[0036] Additionally, a tension spring 8 is connected between the linkage rod 5 and the support plate 1. One end of the tension spring 8 is attached to the linkage rod 5, and the other end is attached to the support plate 1. The tension spring 8 is always in a pre-stretched or relaxed state, providing elastic force for the linkage rod 5 to return to its original position.

[0037] like Figure 2 As shown, the bottom of the movable plate 6 is provided with a waist groove 7 that corresponds to each connecting arm 3. The waist groove 7 is a long strip-shaped through groove, and its length direction can be set to form an angle with the sliding direction of the movable plate 6 according to actual needs, for example, extending along the width direction of the movable plate 6.

[0038] In addition, each connecting arm 3 has a protruding shaft at its top, which extends into the corresponding waist groove 7. The protruding shaft and the waist groove 7 are in clearance fit or sliding fit, allowing the protruding shaft to slide freely along its length within the waist groove 7.

[0039] When the movable plate 6 is subjected to an external force, it slides relative to the support plate 1. At this time, the movable plate 6 drives the waist groove 7 at its bottom to move synchronously. Since the convex shaft extends into the waist groove 7, the waist groove 7 pushes the convex shaft to slide along the length direction of the waist groove 7 during the movement. At the same time, the convex shaft drives the connecting arm 3 to swing around the corresponding pivot 2. When the connecting arm 3 swings, it drives the linkage rod 5 to generate displacement through the extension arm 4 on one side. The displacement of the linkage rod 5 stretches the tension spring 8 and stores elastic potential energy. When the external force on the movable plate 6 is released, the tension spring 8 releases the elastic potential energy and pulls the linkage rod 5 to return to its original position. The linkage rod 5 drives the convex shaft to swing in the opposite direction through the extension arm 4 and the connecting arm 3. The convex shaft pushes the movable plate 6 to slide back to its original position through the waist groove 7, thereby achieving automatic reset.

[0040] The connecting arm 3 specifically includes a first end rotatably connected to the corresponding rotating shaft 2 and a second end opposite to the first end, with a convex shaft disposed at the second end of the connecting arm 3. The extension arm 4 extends outward from the side of the connecting arm 3, and its extension direction can be set according to the actual installation space.

[0041] The two ends of the linkage 5 are respectively hinged to the ends of the two adjacent extension arms 4. The hinge can be made by pin hinge or riveting, so that the linkage 5 can rotate freely relative to the extension arm 4, thereby synchronizing the swing motion of each connecting arm 3.

[0042] like Figure 3 and Figure 4 As shown, the present invention also provides an overload protection device, which includes a support box 9 and the overload protection components as described above. A support plate 1 is disposed inside the support box 9, and a movable plate 6 is mounted on the top of the support box 9. The support box 9 provides installation space and a support base for the movable plate 6 and the support plate 1.

[0043] like Figure 4 As shown, at least one grooved plate 10 is provided on each side of the support box 9, with the groove opening of the grooved plate 10 facing upwards. The two side edges of the movable plate 6 are adapted to the groove openings of the corresponding grooved plates 10, so that the movable plate 6 can slide along the groove openings. The grooved plates 10 serve both as guides and as limits on the sliding range of the movable plate 6.

[0044] A lead screw 11 and at least one sliding shaft 12 are provided between the two inner side walls of the support box 9. Both the lead screw 11 and the sliding shaft 12 pass through the support plate 1, wherein the sliding shaft 12 is slidably adapted to the support plate 1 to provide guidance for the sliding of the support plate 1; the lead screw 11 is threadedly connected to the support plate 1, and when the lead screw 11 rotates, it can drive the support plate 1 to slide along the sliding shaft 12.

[0045] One end of the lead screw 11 extends to the outside of the support box 9. A first motor 13 is installed outside the support box 9. The output end of the first motor 13 and the end of the lead screw 11 extending to the outside of the support box 9 are respectively provided with toothed wheels. The two toothed wheels are connected by a toothed belt 14. When the first motor 13 is running, it drives the lead screw 11 to rotate through the toothed belt 14, thereby driving the support plate 1 to slide along the sliding shaft 12.

[0046] When the reference position of the movable plate 6 needs to be adjusted, the first motor 13 is started, and the first motor 13 drives the lead screw 11 to rotate through the toothed belt 14. The lead screw 11 is threadedly connected to the support plate 1, and when the lead screw 11 rotates, it drives the support plate 1 to slide along the sliding shaft 12. Since the connecting arm 3 is mounted on the support plate 1 through the rotating shaft 2, and the convex shaft at the top of the connecting arm 3 extends into the waist groove 7 at the bottom of the movable plate 6, the sliding of the support plate 1 will drive the movable plate 6 to slide synchronously in the groove of the slotted plate 10 through the connecting arm 3 and the convex shaft, thereby realizing the adjustment of the position of the movable plate 6.

[0047] like Figure 5 and Figure 6 As shown, the present invention also provides a grooving machine, which includes a support 15 and an overload protection device as described above. The support 15 is configured to be mounted on one side of a conveying device, which may be a perfect binding machine.

[0048] The bracket 15 is equipped with a second motor 16 and a grooving box 17, with the grooving box 17 located above the second motor 16. The output end of the second motor 16 extends through the bottom of the grooving box 17 and into its interior, and is connected to a grooving cutter head 18. The grooving cutter head 18 can rotate under the drive of the second motor 16 to perform grooving operations.

[0049] A fixed plate 19 is provided on one side of the top of the slotted box 17. The support box 9 in the overload protection device is provided on the side of the slotted box 17 opposite to the fixed plate 19, so that a gap is formed between the movable plate 6 in the overload protection device and the fixed plate 19, and the slotting cutter head 18 is located directly below the gap.

[0050] The bracket 15 is located on one side of the perfect binding machine. The perfect binding machine drives the book clip to slide along the circular track via the conveyor chain. The book clip holds the book and exposes the bottom of the book, i.e., the spine, below the book clip. When the book clip moves the book to the slotting machine, the spine passes through the gap between the movable plate 6 and the fixed plate 19, and the slotting cutter 18 slots the dynamically passing spine.

[0051] During the slotting process, when the spine becomes abnormally thick due to folds or page turning, it will press against the movable plate 6 as it passes through the gap, causing the movable plate 6 to slide along the slotted plate 10. The sliding of the movable plate 6 is achieved through the engagement of the waist groove 7 and the convex shaft, the swing of the connecting arm 3, and the transmission of the extension arm 4 and the linkage rod 5, which stretches the tension spring 8, thus providing clearance for the movable plate 6 and preventing the spine from getting stuck or damaged. After the spine passes through the gap, the tension spring 8 returns to its original position and drives the linkage rod 5, the extension arm 4, the connecting arm 3, and the convex shaft to move in the opposite direction, pushing the movable plate 6 to slide back to its original position, waiting for the next spine to pass through.

[0052] The overload protection component of this invention is not limited to the field of grooving machines, but can also be applied to other mechanical equipment that requires overload protection and adaptive displacement compensation for moving parts.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An overload protection component, characterized in that, It includes a support plate (1) and a movable plate (6) disposed above the support plate (1) and slidable relative to the support plate (1); At least two rotating shafts (2) are provided on the support plate (1), and each rotating shaft (2) is rotatably connected to a connecting arm (3). An extension arm (4) is provided on one side of the connecting arm (3), and a linkage rod (5) is hinged between adjacent extension arms (4). A tension spring (8) is connected between the linkage rod (5) and the support plate (1). The bottom of the movable plate (6) is provided with a waist groove (7) corresponding to each connecting arm (3). The top of each connecting arm (3) is provided with a convex shaft that extends into the corresponding waist groove (7). When the movable plate (6) slides under the action of external force, it drives the waist groove (7) to move. The waist groove (7) pushes the convex shaft to slide along the waist groove (7) and drives the connecting arm (3) to swing around the corresponding rotating shaft (2). The connecting arm (3) drives the linkage rod (5) to move through the extension arm (4) to stretch the tension spring (8).

2. The overload protection component according to claim 1, characterized in that, The waist groove (7) extends along the width direction of the movable plate (6).

3. The overload protection component according to claim 1, characterized in that, The connecting arm (3) includes a first end rotatably connected to the corresponding rotating shaft (2) and a second end opposite to the first end. The convex shaft is disposed at the second end, and the extension arm (4) extends outward from the side of the connecting arm (3).

4. The overload protection component according to claim 1, characterized in that, The two ends of the linkage rod (5) are respectively hinged to the ends of the two adjacent extension arms (4).

5. An overload protection device, characterized in that, It includes a support box (9) and an overload protection component as described in any one of claims 1 to 4; The support plate (1) is disposed inside the support box (9), the movable plate (6) is mounted on the top of the support box (9), and at least one grooved plate (10) is provided on each side of the support box (9). The two side edges of the movable plate (6) are adapted to the groove of the corresponding grooved plate (10) and can slide along the groove.

6. The overload protection device according to claim 5, characterized in that, A lead screw (11) and at least one sliding shaft (12) are provided between the two inner side walls of the support box (9). The lead screw (11) and the sliding shaft (12) both pass through the support plate (1). The lead screw (11) is threadedly connected to the support plate (1). The sliding shaft (12) is slidably adapted to the support plate (1). When the lead screw (11) rotates, it drives the support plate (1) to slide along the sliding shaft (12).

7. The overload protection device according to claim 6, characterized in that, A first motor (13) is provided on the outside of the support box (9). The output end of the first motor (13) and the end of the lead screw (11) are respectively provided with toothed wheels. The two toothed wheels are connected by a toothed belt (14).

8. A grooving machine, characterized in that, Includes the overload protection device as described in any one of claims 5 to 7 and a bracket (15); The bracket (15) is provided with a second motor (16) and a slotting box (17). The slotting box (17) is located above the second motor (16). The output end of the second motor (16) passes through the bottom of the slotting box (17), extends into its interior, and is connected to a slotting cutter disc (18). The support box (9) is located on the side of the slotted box (17) opposite to the fixed plate (19), and a gap is formed between the movable plate (6) and the fixed plate (19), with the slotted cutter head (18) located below the gap.

9. The grooving machine according to claim 8, characterized in that, The bracket (15) is used to be set on one side of a conveying device, which moves the book by means of a book clip and makes the spine of the book pass through the gap, and the grooving cutter (18) grooves the spine of the book passing through the gap.

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