A feeding mechanism for a curved surface offset printing machine

Abstract

The utility model discloses a kind of feeding mechanism of curved surface offset press, including base, the top of the base is fixedly connected with the fixed plate of front-back symmetry distribution, the top of the base is equipped with the connecting frame of U type setting, conveying belt is installed between the connecting frame and fixed plate.The utility model belongs to feeding structure technical field, specifically a kind of feeding mechanism of curved surface offset press is solved to be difficult to flexibly adjust according to printing demand, when needing to replace adjustment conveying position, complex disassembly and reinstallation are needed to feeding mechanism, prone to the problem of workpiece accumulation caused by overfast feeding, or the situation of conveying interruption caused by over-slow feeding.

Description

Technical Field

[0001] This utility model belongs to the field of feeding structure technology, and in particular relates to a feeding mechanism for a curved surface offset printing machine. Background Technology

[0002] In the production process of curved surface offset printing machines, the feeding mechanism is a key component to ensure printing accuracy and production efficiency. It needs to achieve stable transportation, precise positioning, and efficient cooperation with the printing mechanism for curved workpieces (such as cups, barrels, etc.).

[0003] Traditional feeding mechanisms are mostly fixed in position and height, making it difficult to adjust flexibly according to printing needs. When the conveying position needs to be changed or adjusted, the feeding mechanism needs to be disassembled and reinstalled in a complicated manner. This is not only cumbersome and time-consuming, but also prone to workpiece conveying position deviation due to insufficient adjustment accuracy. The existing feeding mechanism lacks coordination between the feeding and conveying links. Most feeding devices cannot achieve precise synchronization with the conveyor belt, which can easily lead to workpiece accumulation due to excessive feeding or conveying interruption due to excessively slow feeding. Utility Model Content

[0004] The technical problem this invention aims to solve is that it is difficult to flexibly adjust according to printing needs. When it is necessary to change or adjust the conveying position, the feeding mechanism needs to be disassembled and reinstalled in a complicated manner, which may easily lead to workpiece accumulation due to excessively fast feeding or conveying interruption due to excessively slow feeding.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a feeding mechanism for a curved offset printing machine, comprising a base, wherein fixed plates symmetrically distributed front and rear are fixedly connected to the top of the base, a U-shaped connecting frame is provided on the top of the base, and a conveyor belt is installed between the connecting frame and the fixed plates, and further comprising...

[0006] An adjustable feeding assembly is located on the top of the base, including a linear guide rail fixedly installed on the top of the base, a horizontal slider sliding on the linear guide rail, a square frame fixedly connected to the top of the slider, and a connecting frame connected to the square frame through a vertical adjustment mechanism.

[0007] Furthermore, the vertical adjustment mechanism includes a sleeve that passes through the top of the frame and is rotatably connected thereto. An adjustment rod is threadedly connected inside the sleeve, and the adjustment rod is fixedly connected to the bottom of the connecting frame.

[0008] Furthermore, a worm gear is fixedly connected to the sleeve, a servo motor is fixedly installed on the frame, a worm gear meshing with the worm gear is fixedly connected to the output end of the servo motor, and a limiting block symmetrically distributed on the left and right is fixedly connected to the lower end of the adjusting rod. The limiting block passes through the frame and is slidably connected to it.

[0009] Furthermore, limit plates are fixedly connected to the conveyor belt, and they are arranged at equal intervals.

[0010] Furthermore, a support frame is fixedly connected to the top of the base, and a feeding box is fixedly connected to the support frame and located above the conveyor belt. A stepper motor is fixedly installed on the outer wall of the feeding box, and a disc is fixedly connected to the output end of the stepper motor. The disc has grooves arranged in a ring.

[0011] Furthermore, a telescopic rod is fixedly connected between the top of the base and the bottom of the connecting frame, and it is symmetrically distributed front and back relative to the linear guide rail.

[0012] The beneficial effects of this utility model after adopting the above structure are as follows:

[0013] (1) By cooperating with the linear guide rail and the slider, the horizontal position adjustment of the connecting frame and the conveyor belt can be realized. In the vertical adjustment mechanism, the servo motor drives the worm and worm wheel to rotate the sleeve, so that the adjusting rod drives the connecting frame to move up and down. The limit block ensures that the adjusting rod slides stably, and the telescopic rod enhances the stability of the connecting frame when it is raised and lowered. The height position of the conveyor belt can be realized by adjusting the horizontal and vertical positions without complicated disassembly.

[0014] (2) The equally spaced limiting plates on the conveyor belt can separate and position the workpieces, avoid deviation or collision during the conveying process, ensure the consistency of the workpiece conveying position, and provide a precise positional basis for the subsequent printing process.

[0015] (3) The feeding box is used in conjunction with the disc driven by the stepper motor. The annular groove on the disc can quantitatively receive the workpiece. Through the precise control of the stepper motor, the workpiece falls in an orderly manner according to the conveyor belt conveying rhythm, realizing precise synchronization of feeding and conveying, effectively avoiding workpiece accumulation or conveying interruption, and improving production continuity and efficiency. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram of the overall structure of the feeding mechanism of a curved surface offset printing machine proposed in this utility model;

[0018] Figure 2 A partial three-dimensional structural diagram of the feeding mechanism of a curved surface offset printing machine proposed in this utility model. Figure 1 ;

[0019] Figure 3 This is a partial side view of the feeding mechanism of a curved surface offset printing machine proposed in this utility model;

[0020] Figure 4 A partial three-dimensional structural diagram of the feeding mechanism of a curved surface offset printing machine proposed in this utility model. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the internal structure of the feeding mechanism of a curved offset printing machine according to the present invention.

[0022] In the attached diagram: 1. Base, 2. Fixing plate, 3. Connecting frame, 4. Conveyor belt, 5. Linear guide rail, 6. Slider, 7. Square frame, 8. Sleeve, 9. Adjusting rod, 10. Worm gear, 11. Servo motor, 12. Worm, 13. Limit block, 14. Limiting plate, 15. Support frame, 16. Feed box, 17. Stepper motor, 18. Disc, 19. Groove, 20. Telescopic rod. Detailed Implementation

[0023] like Figure 1-5 As shown, a feeding mechanism for a curved offset printing machine includes a base 1, a fixed plate 2, a connecting frame 3, a conveyor belt 4, and an adjustable feeding assembly. The specific installation and operation of each component are as follows:

[0024] The base 1 has a fixed plate 2 that is symmetrically distributed front and back on the top. The base 1 has a U-shaped connecting frame 3 on the top. A conveyor belt 4 is installed between the connecting frame 3 and the fixed plate 2 for conveying curved workpieces. An adjustable feeding assembly is located on the top of the base 1. Its core includes a linear guide rail 5, a slider 6, a square frame 7 and a vertical adjustment mechanism. The linear guide rail 5 is fixedly installed on the top of the base 1. A horizontal slider 6 is slidably connected to the guide rail. The top of the slider 6 is fixedly connected to the square frame 7. The connecting frame 3 is connected to the square frame 7 through the vertical adjustment mechanism to realize the position adjustment of the conveyor belt 4.

[0025] The vertical adjustment mechanism consists of a sleeve 8, an adjusting rod 9, a worm gear 10, a worm 12, and a servo motor 11. The sleeve 8 passes through the top of the frame 7 and is rotatably connected to it. The adjusting rod 9 is threaded inside the sleeve 8. The top of the adjusting rod 9 is fixedly connected to the bottom of the connecting frame 3. The worm gear 10 is fixedly connected to the sleeve 8. The servo motor 11 is fixedly installed on the frame 7. The output end of the servo motor 11 is connected to the worm 12, which meshes with the worm gear 10. The lower end of the adjusting rod 9 is fixedly connected to left and right symmetrical limit blocks 13. The limit blocks 13 pass through the frame 7 and are slidably connected to it to ensure that the adjusting rod 9 does not rotate when it is raised or lowered. A telescopic rod 20, which is symmetrical about the linear guide rail 5, is also fixedly connected between the top of the base 1 and the bottom of the connecting frame 3 to enhance the stability of the connecting frame 3 when it is raised or lowered.

[0026] Equally spaced limiting plates 14 are fixedly connected to the conveyor belt 4 to separate and position the conveyed workpieces. A support frame 15 is fixedly connected to the top of the base 1, and a feeding box 16 is fixedly connected to the support frame 15. The feeding box 16 is located above the conveyor belt 4, and a stepper motor 17 is fixedly installed on its outer wall. A disc 18 is fixedly connected to the output end of the stepper motor 17. The disc 18 has annularly arranged grooves 19 for receiving and conveying the workpieces to be processed.

[0027] In practical use, if it is necessary to adjust the height of the conveyor belt 4, the linear guide rail 5 is controlled to make the slider 6 slide laterally, and the servo motor 11 is started at the same time to drive the worm gear 12 to drive the worm wheel 10 and the sleeve 8 to rotate, so that the adjusting rod 9 drives the connecting frame 3 to move up and down under the action of the thread. The limit block 13 slides along the square frame 7 to prevent the adjusting rod 9 from deviating, and the telescopic rod 20 extends and retracts synchronously to assist in stabilization.

[0028] During feeding, the workpiece to be conveyed is placed in the feeding box 16, and the stepper motor 17 drives the disc 18 to rotate. The groove 19 on the disc 18 quantitatively receives the workpiece. As the disc 18 rotates, the workpiece falls rhythmically between the limiting plates 14 of the conveyor belt 4 and is conveyed forward under the drive of the conveyor belt 4. The limiting plates 14 ensure the stability of the workpiece position, realize the precise coordination of feeding and conveying, and meet the feeding needs of curved workpieces of different specifications.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A feeding mechanism for a curved offset printing machine, comprising a base (1), wherein a fixed plate (2) symmetrically distributed front and rear is fixedly connected to the top of the base (1), a U-shaped connecting frame (3) is provided on the top of the base (1), and a conveyor belt (4) is installed between the connecting frame (3) and the fixed plate (2), characterized in that: Also includes An adjustable feeding assembly is located on the top of the base (1) and includes a linear guide rail (5) fixedly installed on the top of the base (1). A horizontal slider (6) slides on the linear guide rail (5). A square frame (7) is fixedly connected to the top of the slider (6). The connecting frame (3) is connected to the square frame (7) through a vertical adjustment mechanism.

2. The feeding mechanism of a curved surface offset printing machine according to claim 1, characterized in that: The vertical adjustment mechanism includes a sleeve (8) that passes through the top of the frame (7) and is rotatably connected thereto. An adjustment rod (9) is threaded inside the sleeve (8), and the adjustment rod (9) is fixedly connected to the bottom of the connecting frame (3).

3. The feeding mechanism of a curved surface offset printing machine according to claim 2, characterized in that: A worm gear (10) is fixedly connected to the sleeve (8), a servo motor (11) is fixedly installed on the frame (7), a worm (12) that meshes with the worm gear (10) is fixedly connected to the output end of the servo motor (11), and a limiting block (13) that is symmetrically distributed on the left and right is fixedly connected to the lower end of the adjusting rod (9). The limiting block (13) passes through the frame (7) and is slidably connected to it.

4. The feeding mechanism of a curved surface offset printing machine according to claim 1, characterized in that: Therefore, limit plates (14) are fixedly connected to the conveyor belt (4), and they are arranged at equal intervals.

5. The feeding mechanism of a curved surface offset printing machine according to claim 2 or 3, characterized in that: A support frame (15) is fixedly connected to the top of the base (1), and a feeding box (16) is fixedly connected to the support frame (15) and is located above the conveyor belt (4). A stepper motor (17) is fixedly installed on the outer wall of the feeding box (16), and a disc (18) is fixedly connected to the output end of the stepper motor (17). The disc (18) is provided with grooves (19) arranged in a ring.

6. The feeding mechanism of a curved surface offset printing machine according to claim 3, characterized in that: A telescopic rod (20) is fixedly connected between the top of the base (1) and the bottom of the connecting frame (3), and it is symmetrically distributed in front and behind relative to the linear guide rail (5).

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