A reverse pushing mechanism of a children's card book production line

Abstract

This utility model relates to the technical field of children's book production equipment, specifically disclosing a reverse-push mechanism for a children's book production line, including a mounting plate, a drive assembly, a push assembly, and a guide assembly. The drive assembly includes a drive device, a first rotating shaft, and a cam coaxially fixed thereon. The push assembly consists of a bracket, a pusher fixed to the upper end of the bracket, and a roller at the lower end of the bracket. The guide assembly includes a first vertical plate, an inclined guide rail, and a slider that cooperates with the guide rail. When the cam drives the roller to move the bracket, the inclined guide rail forces the bracket to move along a specific inclined trajectory, enabling the pusher to accurately reverse-push and position the cover that has exceeded its conveying range. The inclined guide rail and the slider bear the main contact pressure during the cover reverse-push process, so that the cam only needs to provide driving force and a small amount of pressure to maintain contact with the roller, significantly reducing cam wear.

Description

Technical Field

[0001] This utility model relates to the technical field of children's book production equipment, and in particular to a reverse push mechanism for a children's book production line. Background Technology

[0002] In the production process of children's books, the equipment typically includes steps such as cover feeding, cover gluing, book block mounting, cover flipping, and flat pressing. At the book block mounting station, the conveyor transports the glued cover to a predetermined position, where the book block must be precisely pressed down to adhere to the cover. However, in actual production, the cover is prone to overtravel (exceeding the predetermined position) due to excessive conveying speed, causing misalignment between the book block and the cover during lowering, severely affecting product quality.

[0003] To address the issue of cover overtravel, a reverse-push positioning device is disclosed in Chinese Patent Publication No. CN212868260U. This device includes a fixed plate, a connecting rod, and a reverse-push assembly. The two ends of the connecting rod are movably connected to the fixed plate and the reverse-push assembly, respectively. When the connecting rod moves on the fixed plate, the reverse-push assembly moves simultaneously in both the lateral and longitudinal directions. When the connecting rod moves on the fixed plate, the reverse-push assembly is driven by the connecting rod, giving it a pushing effect. When this pushing direction is opposite to the product's travel direction, it has a reverse-push effect on the product, solving the problem in existing technologies where the product moves beyond a specified range due to inertia. By reverse-pushing the product, it pushes it back to the designated position, achieving the product positioning function.

[0004] However, in existing reverse positioning devices, the movement of the reverse component is often directly driven by a cam. This means that the weight of the entire reverse component, as well as the resistance it experiences during movement (especially the reaction force generated by contact with the cover), is ultimately borne primarily by the cam structure. Over long-term operation, the cam is prone to wear, which in turn affects the positioning accuracy and service life of the device.

[0005] Therefore, the above problems urgently need to be solved. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a reverse push mechanism for a children's book production line to solve the above problems.

[0007] A reverse mechanism for a children's book production line includes:

[0008] The mounting plate has a through-hole extending vertically.

[0009] The drive assembly includes a drive device mounted on the mounting plate, a first rotating shaft that is drive-connected to the drive device, and a cam that is coaxially fixedly connected to the first rotating shaft.

[0010] The pushing assembly includes a bracket movable within the movable hole in the left-right and up-down directions, a pusher fixed to the upper end of the bracket, and a roller rotatably mounted on the lower end of the bracket; the roller rolls along the surface of the cam to drive the pusher to reciprocate obliquely.

[0011] The guide assembly includes a first vertical plate fixed to the bottom of the mounting plate, an inclined guide rail fixed to the first vertical plate, and a slider fixed to the bracket and slidingly engaged with the inclined guide rail.

[0012] The cam has a fan-shaped structure.

[0013] Specifically, an elastic reset member is also connected between the bracket and the first vertical plate, and the elastic reset member is used to maintain stable contact between the roller and the cam.

[0014] Specifically, the elastic reset element is a tension spring, and the tension spring is arranged parallel to the inclined guide rail.

[0015] Specifically, the pusher includes a horizontal plate fixed to the bracket, a plurality of support brackets spaced apart on the horizontal plate in the front-back direction, and a push plate fixed to the support brackets; the push plate has an L-shaped structure.

[0016] Specifically, the position of the support frame on the horizontal plate along the front-to-back direction is adjustable; the position of the push plate on the support frame along the left-to-right direction is adjustable.

[0017] Specifically, the drive device includes a right-angle motor fixed to the bottom of the mounting plate, a second rotating shaft connected to the output shaft of the right-angle motor, a drive wheel fixedly connected to the second rotating shaft on the same axis, a driven wheel fixedly connected to the first rotating shaft on the same axis, and a transmission belt sleeved on the drive wheel and the driven wheel.

[0018] Specifically, a second vertical plate is fixed to the lower end of the mounting plate; the two ends of the first rotating shaft are mounted between the first vertical plate and the second vertical plate via bearings.

[0019] The beneficial effects of this utility model are:

[0020] This application discloses a reverse-push mechanism for a children's book production line, comprising a mounting plate, a drive assembly, a push assembly, and a guide assembly. The drive assembly includes a drive device, a first rotating shaft, and a cam coaxially fixed thereon. The push assembly consists of a bracket, a pusher fixed to the upper end of the bracket, and rollers at the lower end of the bracket. The guide assembly includes a first vertical plate, an inclined guide rail, and a slider that cooperates with the guide rail. When the cam drives the rollers to move the bracket, the inclined guide rail forces the bracket to move along a specific inclined trajectory, enabling the pusher to accurately reverse-push and position the cover that has exceeded its conveying range. The inclined guide rail and the slider bear the main contact pressure during the cover reverse-push process, so that the cam only needs to provide driving force and a small amount of pressure to maintain contact with the rollers, significantly reducing cam wear. Attached Figure Description

[0021] Figure 1 The three-dimensional reverse mechanism of this application Figure 1 ;

[0022] Figure 2 The three-dimensional reverse mechanism of this application Figure 2 ;

[0023] Figure 3 This is a perspective view of the cam, guide assembly, push assembly, and elastic reset member of this application;

[0024] Figure 4 This is a schematic diagram of the structure by which the reverse-propulsion mechanism of this application reverses the propulsion action on the cover.

[0025] The attached figures are labeled as follows: mounting plate 1, movable hole 11, drive assembly 2, drive device 21, right-angle motor 211, second rotating shaft 212, driving wheel 213, driven wheel 214, transmission belt 215, first rotating shaft 22, cam 23, push assembly 3, bracket 31, pusher 32, horizontal plate 321, support frame 322, push plate 323, roller 33, guide assembly 4, first vertical plate 41, inclined guide rail 42, slider 43, elastic reset component 5, second vertical plate 6, bearing 61, cover 71, book block 72. Detailed Implementation

[0026] This utility model provides a reverse-pushing mechanism for a children's business card production line. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0027] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0028] Please refer to Figures 1 to 4 This embodiment discloses a reverse mechanism for a children's book production line, comprising:

[0029] Mounting plate 1, with a vertically penetrating movable hole 11 on the mounting plate 1;

[0030] The drive assembly 2 includes a drive device 21 mounted on the mounting plate 1, a first rotating shaft 22 that is drive-connected to the drive device 21, and a cam 23 that is coaxially fixedly connected to the first rotating shaft 22.

[0031] The pushing component 3 includes a bracket 31 that can move in the movable hole 11 in the left-right and up-down directions, a pusher 32 fixed to the upper end of the bracket 31, and a roller 33 rotatably mounted on the lower end of the bracket 31; the roller 33 rolls along the surface of the cam 23 to drive the pusher 32 to reciprocate in an oblique direction.

[0032] The guide assembly 4 includes a first vertical plate 41 fixed to the bottom of the mounting plate 1, an inclined guide rail 42 fixed to the first vertical plate 41, and a slider 43 fixed to the bracket 31 and slidingly engaged with the inclined guide rail 42.

[0033] The reverse pushing process in this embodiment is as follows: When the cover 71 printed with glue is conveyed at high speed in the left-right direction below the book block mounting station, the pusher 32 fixed to the upper end of the bracket 31 first acts as a blocking and limiting function, temporarily stopping the cover 71. Subsequently, the drive device 21 starts working, driving the first rotating shaft 22 connected to it to rotate. The cam 23 fixedly installed on the first rotating shaft 22 rotates synchronously. As the specific contour surface of the cam 23 rotates, its outer edge or raised part will contact and push the roller 33 rotatably installed at the lower end of the bracket 31. Since the roller 33 is directly pushed by the cam 23, and this pushing force is transmitted to the entire bracket 31 through the roller 33, the bracket 31 together with the pusher 32 fixed on it begins to move.

[0034] In this embodiment, the movement of the support 31 is precisely constrained by the addition of the guide component 4. A slider 43 is fixed on the support 31, which fits tightly in the inclined guide rail 42 fixed to the first vertical plate 41. The inclined guide rail 42 is set at a specific angle. Therefore, when the cam 23 pushes the roller 33 (essentially pushing the support 31), the support 31 does not simply move up and down or left and right, but rather performs a combined movement along the inclined direction of the inclined guide rail 42 under the guidance of the inclined guide rail 42. This combined movement causes the pusher 32 to reciprocate along an inclined trajectory (e.g., simultaneously having a reverse horizontal component towards the book block mounting position and an appropriate vertical component). During this movement stroke, the pusher 32 applies a backward oblique thrust (i.e., a counter-thrust) to the cover 71 that is blocked in front, stably pushing the cover 71, which may have crossed the precise predetermined position due to inertia or excessive conveying speed, back to the accurate book block mounting predetermined position. After the reverse positioning is completed, the book block 72 can be accurately aligned with the area on the cover 71 where glue is applied when it is put down, achieving high-quality mounting.

[0035] The reverse thrust mechanism of this embodiment has the following technical effects:

[0036] 1. Effective positioning and overtravel prevention: The obliquely moving pusher 32 can effectively block the cover 71 from overspeeding and push it back to the precise predetermined position, fundamentally solving the problem of the cover 71 overtraveling in the mounting station.

[0037] II. Optimized Cam Force and Reduced Wear: This is the core improvement of this mechanism. The core function of cam 23 is to provide driving thrust, pushing roller 33 and thus driving the entire pushing assembly 3. However, when the pusher 32 contacts the cover 71 and applies a counter-thrust, a reaction force pointing towards cam 23 will inevitably be generated. In the traditional structure, this reaction force is mainly borne directly by cam 23. In this design, since the bracket 31 is strictly restricted to sliding within the inclined guide rail 42 by slider 43, the huge reaction force (contact pressure) generated in actual operation is transmitted from slider 43 to the rigidly fixed inclined guide rail 42, and is borne by the structure of the entire guide assembly 4 and mounting plate 1. Cam 23 mainly bears the driving force required for its rotation, as well as the smaller pressure required to overcome system friction and maintain roller contact, greatly reducing the pressure on cam 23 directly bearing the working load and significantly reducing the wear rate of cam 23 during long-term operation.

[0038] III. Smooth Movement and Precision Guarantee: The inclined guide rail 42 provides precise and rigid motion trajectory guidance. The sliding of the slider 43 within the guide rail ensures the smoothness and trajectory stability of the overall movement of the support 31 and the pusher 32. This not only helps in the precise execution of the reverse thrust operation and ensures consistency in each positioning, but also improves the overall operational stability and service life of the equipment.

[0039] Furthermore, the cam 23 has a fan-shaped structure, and its specific profile contacts the roller 33 during rotation, forming a regular lift and return motion. When the thicker or more curved fan-blade portion of the fan-blade cam 23 pushes the roller 33, the bracket 31, guided by the inclined guide rail 42, drives the pusher 32 to lift obliquely and push the cover 71 outward; when the fan-blade profile rotates into a thinner or less curved area, the bracket 31 returns to its original position. The key effects of this structure are: the fan-blade-shaped profile simplifies the cam machining difficulty and optimizes the contact surface; its concentrated angle distribution of the action range better meets the instantaneous strong thrust requirements of the reverse thrust operation, reducing idle stroke loss; the gradually opening and closing curved surface design makes the thrust transmission smoother, reduces start-stop impact, and improves the overall stability of the mechanism.

[0040] An elastic reset element 5 is also connected between the bracket 31 and the first vertical plate 41. The elastic reset element 5 is used to maintain stable contact between the roller 33 and the cam 23. The elastic reset element 5 is a tension spring, and the tension spring is set parallel to the inclined guide rail 42. The tension spring always provides a pulling force to the bracket 31 toward the cam 23, ensuring that the roller 33 always rolls in close contact with the curved surface of the cam 23. The setting parallel to the inclined guide rail 42 makes the force direction of the tension spring consistent with the main movement direction of the bracket 31, avoiding lateral twisting. Through this setting, a constant contact positive pressure can be provided, eliminating gap noise, improving the smoothness of movement and the surface integrity of the cam 23; at the same time, it can assist the bracket 31 to quickly reset in the cam return section.

[0041] The pusher 32 includes a horizontal plate 321 fixed on the bracket 31, a plurality of support brackets 322 spaced apart on the horizontal plate 321 in the front-back direction, and a push plate 323 fixed on the support brackets 322. The push plate 323 has an L-shaped structure, and the vertical edge of the push plate 323 protrudes upward to block the cover 71. By setting multiple support brackets 322 and multiple push plates 323, multi-point contact can prevent the cover 71 from tilting and ensure that the posture of the cover 71 remains unchanged.

[0042] The position of the support frame 322 on the horizontal plate 321 along the front-back direction is adjustable. By sliding and adjusting the front-back position of the support frame 322 on the horizontal plate 321, the lateral spacing of multiple push plates 323 can be changed simultaneously to adapt to the width variation requirements of different specifications of the cover 71.

[0043] The position of the push plate 323 on the support frame 322 along the left and right directions is adjustable; the independent displacement of the push plate 323 on the support frame 322 along the left and right directions precisely controls the contact depth between each push plate 323 and the side of the cover 71.

[0044] The spatial reconstruction of the three-point positioning system can be quickly achieved through bidirectional adjustment and synergy. This ensures that the multi-point push plate 323 evenly covers the effective back-pushing area of ​​the cover 71, and can also finely adjust the pushing stroke according to the production line layout. Ultimately, the flexible configuration meets the precise positioning of the cover 71 of multiple sizes, greatly reducing the production line changeover and debugging time.

[0045] The drive unit 21 includes a right-angle motor 211 fixed to the bottom of the mounting plate 1, a second rotating shaft 212 connected to the output shaft of the right-angle motor 211, a drive wheel 213 coaxially fixedly connected to the second rotating shaft 212, a driven wheel 214 coaxially fixedly connected to the first rotating shaft 22, and a transmission belt 215 sleeved on the drive wheel 213 and the driven wheel 214. The lower placement of the right-angle motor 211 saves longitudinal space of the equipment, and the flexible connection of the transmission belt 215 isolates the vibration of the motor starting and stopping. Through the precise speed ratio control of the drive wheel 213 and the driven wheel 214, the uniform rotation of the cam 23 and the instantaneous variable thrust output are synchronized, ensuring seamless connection between the oblique reverse thrust operation and the production line cycle.

[0046] The lower end of the mounting plate 1 is also fixed with a second vertical plate 6; the two ends of the first rotating shaft 22 are mounted between the first vertical plate 41 and the second vertical plate 6 through bearings 61. The gantry structure formed by the double vertical plates rigidly supports the first rotating shaft 22 through the bearings 61 at both ends, converting the thrust of the cam 23 into axial torque, and completely eliminating the flexural deformation caused by the single cantilever structure.

[0047] The preferred embodiments of this utility model have been described in detail above. However, this invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this invention.

Claims

1. A reverse-pushing mechanism for a children's business card production line, characterized in that, include: Mounting plate (1), wherein the mounting plate (1) has a vertically penetrating movable hole (11); The drive assembly (2) includes a drive device (21) mounted on the mounting plate (1), a first rotating shaft (22) that is drively connected to the drive device (21), and a cam (23) that is coaxially fixedly connected to the first rotating shaft (22); The pushing component (3) includes a bracket (31) movable in the movable hole (11) in the left-right and up-down directions, a pusher (32) fixed to the upper end of the bracket (31), and a roller (33) rotatably mounted on the lower end of the bracket (31); the roller (33) rolls along the surface of the cam (23) to drive the pusher (32) to reciprocate obliquely; The guide assembly (4) includes a first vertical plate (41) fixed to the bottom of the mounting plate (1), an inclined guide rail (42) fixed to the first vertical plate (41), and a slider (43) fixed to the bracket (31) and slidingly engaged with the inclined guide rail (42).

2. The reverse push mechanism of a child passport production line according to claim 1, characterized in that, The cam (23) has a fan-shaped structure.

3. The pushback mechanism of a child passport book production line according to claim 1, wherein, An elastic reset member (5) is also connected between the bracket (31) and the first vertical plate (41). The elastic reset member (5) is used to maintain stable contact between the roller (33) and the cam (23).

4. The pushback mechanism of a child passport book production line according to claim 3, wherein, The elastic reset member (5) is a tension spring, and the tension spring is arranged parallel to the inclined guide rail (42).

5. The pushback mechanism of a child passport book production line according to claim 1, wherein, The pusher (32) includes a horizontal plate (321) fixed on the bracket (31), a plurality of support brackets (322) spaced apart on the horizontal plate (321) in the front-back direction, and a push plate (323) fixed on the support brackets (322); the push plate (323) has an L-shaped structure.

6. The pushback mechanism of a child passport book production line according to claim 5, wherein, The position of the support frame (322) on the horizontal plate (321) along the front-back direction is adjustable; the position of the push plate (323) on the support frame (322) along the left-right direction is adjustable.

7. The pushback mechanism of a child passport book production line according to claim 1, wherein, The drive device (21) includes a right-angle motor (211) fixed to the bottom of the mounting plate (1), a second rotating shaft (212) connected to the output shaft of the right-angle motor (211), a drive wheel (213) coaxially fixedly connected to the second rotating shaft (212), a driven wheel (214) coaxially fixedly connected to the first rotating shaft (22), and a transmission belt (215) sleeved on the drive wheel (213) and the driven wheel (214).

8. The pushback mechanism of a child passport book production line according to claim 1, wherein, The lower end of the mounting plate (1) is also fixed with a second vertical plate (6); the two ends of the first rotating shaft (22) are mounted between the first vertical plate (41) and the second vertical plate (6) through bearings (61).

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