Automatic punching machine for bookbinding

Abstract

The utility model discloses a kind of automatic punching machine for binding, it is related to the punching mechanism technical field of punching equipment, including two parallelly arranged side supports, two connecting plates are arranged between two side supports, several moving plates are slidably connected between two connecting plates, air spring is arranged on the both sides of connecting plate close to moving plate, punch is arranged at the bottom of moving plate, side support top is provided with spline shaft through shaft seat, spline shaft surface is provided with several eccentric cam perpendicular to moving plate and adapt, locking bolt is arranged between eccentric cam and spline shaft, operator can adjust the initial angle of eccentric cam on the surface of spline shaft, so that spline shaft is rotated at different angles Eccentric cam simultaneously rotates staggered and pushes moving plate, staggered moving plate pushes punch staggered and punches target object, so as to reduce the load generated simultaneously when punching.

Description

Technical Field

[0001] This utility model relates to the technical field of punching mechanisms for punching equipment, and in particular to an automatic punching machine for binding. Background Technology

[0002] There are many ways to bind books, some of which require perforations to be made at fixed positions in the book to facilitate subsequent binding. The perforation process is carried out using an automatic punching machine.

[0003] Because books have relatively low strength, punching equipment used for making holes in books generally has relatively low power and leaves some machining allowance to cope with special situations. However, in actual use, punching equipment will process multiple targets simultaneously and continuously, and multiple holes will be made in each target. This results in the punching equipment being subjected to the largest workload in the entire process when the punch of the punching machine contacts all the books at the same time to make holes. After punching is completed, the load drops rapidly. This situation can easily cause the equipment components that support the punching equipment to fail under the peak load fluctuation. Furthermore, the sudden increase in workload during normal use may also cause the power equipment to fail suddenly, affecting the actual service life of the equipment. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an automatic punching machine for binding, which solves the problem of a sudden increase in load when the punching machine contacts the processing target and performs punching processing.

[0005] The technical solution of this utility model is as follows: an automatic punching machine for binding includes two parallel side supports, two connecting plates are provided between the two side supports, and a gap is left between the two connecting plates to form a machine space. The surface of the connecting plates is evenly distributed with a number of vertical teeth in the horizontal direction. The connecting plates are provided with mounting grooves that penetrate the number of vertical teeth in the horizontal direction. A number of movable plates are slidably connected between the two connecting plates through the vertical teeth. Gas springs are provided on both sides of the movable plates near the connecting plates, and punches are provided at the bottom of the movable plates.

[0006] The top of the side support is equipped with a spline shaft via a bearing seat. The surface of the spline shaft is provided with several eccentric cams that are perpendicular to and adapted to the moving plate. Locking bolts are provided between the eccentric cams and the spline shaft. One end of the spline shaft passes through the bearing seat and is connected to an external power device.

[0007] Furthermore, the movable plate has inward grooves on both sides, and the top of the inner wall of the groove is inclined to ensure that there is enough space on the surface of the movable plate to install the gas spring. The top two sides of the movable plate have smooth chamfers.

[0008] Furthermore, the movable end and the fixed end of the gas spring are rotatably connected to the inclined inner wall of the groove of the moving plate and the inner wall of the mounting groove, respectively. The gas spring is always kept in a relaxed state. The gas spring pushes the moving plate upward so that the top of the moving plate abuts against the smallest diameter side of the eccentric cam, ensuring that the gas spring is not obstructed during the expansion and contraction process, while ensuring that the moving plate can always be affected by the rotation of the eccentric cam.

[0009] Furthermore, the opening end of the mounting slot is in a wide-mouthed expansion state, providing sufficient space to ensure the extension and contraction of the gas spring.

[0010] Furthermore, the eccentric cam is provided with a bushing adapted to the spline shaft, and a locking bolt is provided on the surface of the bushing to prevent the eccentric cam from moving horizontally along the spline shaft.

[0011] Furthermore, the maximum diameter side diameter of the eccentric cam is adapted to the distance between the punch at the bottom of the moving plate and the processing plane, ensuring that the eccentric cam can push the punch at the bottom of the moving plate to contact the target object and complete the punching work.

[0012] Furthermore, a sacrificial shell made of hard plastic is adhered to the top of the movable plate. The surface of the sacrificial shell is smooth and flat. The sacrificial shell protects the top of the movable plate, optimizes the contact effect between the movable plate and the eccentric cam, increases the service life of the movable plate, and reduces maintenance costs.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a number of eccentric cams corresponding to a number of moving plates to drive the punch at the bottom of the moving plate to process the target. The operator can adjust the initial angle of the eccentric cams on the surface of the spline shaft, so that when the spline shaft rotates, the eccentric cams at different angles rotate simultaneously and push the moving plate in an alternating manner. The alternating moving plates push the punch to punch the target object in an alternating manner, thereby reducing the load generated at the same time during punching.

[0015] 2. This utility model also connects the spline shaft and the side bracket through a shaft seat. When the operator needs to change the number or position of punching holes, he / she can remove the spline shaft and disassemble the eccentric cams on the spline shaft sleeve to the required number, so that only the required eccentric cams remain on the surface of the spline shaft, and align the remaining eccentric cams with the corresponding moving plate. At this time, when the spline shaft rotates, only the required moving plate moves vertically, which can meet the user's requirements for the specific number and position of holes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2This is a schematic diagram of the internal structure of the connecting plate of this utility model;

[0018] Figure 3 This is a schematic diagram of the movable plate structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the mounting groove and vertical teeth of this utility model;

[0020] Figure 5 This is a schematic diagram of the eccentric cam structure of this utility model.

[0021] Reference numerals: 1. Side bracket; 2. Connecting plate; 3. Vertical tooth; 4. Mounting slot; 5. Moving plate; 6. Gas spring; 7. Eccentric cam; 8. Splined shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] like Figure 1-5 As shown, an automatic punching machine for binding includes two parallel side supports 1, two connecting plates 2 are arranged between the two side supports 1, and a gap is left between the two connecting plates 2 to form a machine space. The surface of the connecting plates 2 is evenly distributed with a number of vertical teeth 3 in the horizontal direction. The connecting plates 2 are provided with mounting grooves 4 that pass through the vertical teeth 3 in the horizontal direction. A number of movable plates 5 are slidably connected between the two connecting plates 2 through the vertical teeth 3. Gas springs 6 are provided on both sides of the movable plates 5 near the connecting plates 2. The sides of the movable plates 5 are provided with inward grooves. The top of the inner wall of the groove is inclined to ensure that there is enough space on the surface of the movable plates 5 to install the gas springs 6. The top sides of the movable plates 5 are provided with smooth chamfers. The opening end of the mounting groove 4 is in a wide-mouth expansion state to provide enough space to ensure the extension and retraction of the gas springs 6. A punch is provided at the bottom of the movable plates 5.

[0024] A splined shaft 8 is mounted on the top of the side bracket 1 via a bearing seat. Several eccentric cams 7 are mounted on the surface of the splined shaft 8, which are perpendicularly adapted to the moving plate 5. The maximum diameter side diameter of the eccentric cam 7 is adapted to the distance between the punch at the bottom of the moving plate 5 and the processing plane, ensuring that the eccentric cam 7 can push the punch at the bottom of the moving plate 5 to contact the target object and complete the punching work. The movable end and the fixed end of the gas spring 6 are rotatably connected to the inclined inner wall of the groove of the moving plate 5 and the inner wall of the mounting groove 4, respectively. The gas spring 6 is always in a relaxed state. The gas spring 6 pushes the moving plate 5 upward so that the top of the moving plate 5 abuts against the minimum diameter side of the eccentric cam 7, ensuring that the gas spring 6 is not obstructed during the expansion and contraction process, and at the same time ensuring that the moving plate 5 is always affected by the rotation of the eccentric cam 7. A sacrificial shell made of hard plastic is glued to the top of the moving plate 5. The surface of the sacrificial shell is smooth and flat. The sacrificial shell protects the top of the moving plate 5, optimizes the contact effect between the moving plate 5 and the eccentric cam 7, increases the service life of the moving plate 5, and reduces maintenance costs.

[0025] A locking bolt is provided between the eccentric cam 7 and the spline shaft 8. The eccentric cam 7 has a bushing that is compatible with the spline shaft 8 inside. The locking bolt is located on the surface of the bushing to prevent the eccentric cam 7 from moving horizontally along the spline shaft 8. One end of the spline shaft 8 passes through the shaft seat and is connected to an external power device.

[0026] Working principle of this utility model:

[0027] First, the operator separates the spline shaft 8 from the side bracket 1 and loosens the locking bolts, allowing the eccentric cam 7 to move freely or separate along the spline shaft 8. At this point, the operator can select the number of eccentric cams 7 on the surface of the spline shaft 8, the installation angle of the eccentric cams 7, and their position on the surface of the spline shaft 8. After ensuring that the eccentric cam 7 is aligned with the corresponding moving plate 5, the connection between the spline shaft 8 and the side bracket 1 is restored. Then, the operator starts the external power unit to rotate the spline shaft 8. During rotation, the spline shaft 8 drives the eccentric cam 7 to rotate, and the eccentric cam 7 moves towards the moving plate 5 during rotation. The diameter of one side of the moving plate 5 gradually increases, pushing the moving plate 5 downward. When the moving plate 5 moves downward, it compresses the gas spring 6 and simultaneously moves the downward moving plate 5 to bring the punch closer to the target object for punching. After the punch contacts the target object, it generates a load. However, at the same time, the rotation angle of the other eccentric cams 7 is insufficient to push the moving plate 5 to make the punch contact the target object. This results in a limited number of punches contacting the target object at the same time, and the generated load is completely within the bearing range of the power equipment and other components. When the eccentric cam 7 rotates to the side with the smallest diameter and approaches the moving plate 5, the gas spring 6 pushes the moving plate 5 to reset so that the next punching can be performed.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic punching machine for binding, comprising two parallel side supports (1), and two connecting plates (2) disposed between the two side supports (1), characterized in that: The two connecting plates (2) are spaced apart to form a device space. The surface of the connecting plate (2) is evenly spaced with several vertical teeth (3) in the horizontal direction. The connecting plate (2) is provided with a mounting groove (4) through the several vertical teeth (3) in the horizontal direction. Several moving plates (5) are slidably connected between the two connecting plates (2) through the vertical teeth (3). Gas springs (6) are provided on both sides of the moving plates (5) near the connecting plates (2). A punch is provided at the bottom of the moving plates (5). The top of the side bracket (1) is provided with a spline shaft (8) through a bearing seat. The surface of the spline shaft (8) is provided with several eccentric cams (7) that are perpendicular to and adapted to the moving plate (5). A locking bolt is provided between the eccentric cams (7) and the spline shaft (8). One end of the spline shaft (8) passes through the bearing seat and is connected to an external power device.

2. The automatic punching machine for binding according to claim 1, characterized in that: The movable plate (5) has inward grooves on both sides, the top of the inner wall of the groove is inclined, and the top of the movable plate (5) has smooth chamfers on both sides.

3. The automatic punching machine for binding according to claim 2, characterized in that: The movable end and the fixed end of the gas spring (6) are rotatably connected to the inclined inner wall of the groove of the moving plate (5) and the inner wall of the mounting groove (4), respectively. The gas spring (6) always remains in a relaxed state. The gas spring (6) pushes the moving plate (5) upward so that the top of the moving plate (5) abuts against the smallest diameter side of the eccentric cam (7).

4. An automatic punching machine for binding according to claim 1, characterized in that: The eccentric cam (7) is provided with a bushing that is adapted to the spline shaft (8), and the locking bolt is provided on the surface of the bushing.

5. An automatic punching machine for binding according to claim 1, characterized in that: The maximum diameter side diameter of the eccentric cam (7) is adapted to the distance between the bottom punch of the moving plate (5) and the machining plane.

6. An automatic punching machine for binding according to claim 3, characterized in that: The top of the movable plate (5) is glued with a sacrificial shell made of hard plastic, and the surface of the sacrificial shell is smooth and flat.

7. An automatic punching machine for binding according to claim 1, characterized in that: The opening end of the mounting groove (4) is in a wide-mouth expansion state.

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