Crankshaft worm gear transmission mechanism of die-cutting machine

Abstract

The utility model discloses a crankshaft worm gear transmission mechanism of a die-cutting machine, which comprises a crankshaft and a worm gear, mounting seats are arranged corresponding to the crankshaft and are used for rotatably supporting the crankshaft, and the crankshaft worm gear transmission mechanism is characterized in that a transmission piece is arranged at one end of the crankshaft, and one end of the transmission piece is connected with one end of a transmission block; a first limiting block and a second limiting block are arranged on the end face of one side of the worm gear, a limiting groove is defined by the first limiting block and the second limiting block, the transmission block is arranged in the limiting groove in a sliding mode, and the rotation center of the crankshaft and the rotation center of the worm gear are staggered. The variable-speed lifting mechanism is simple in structure, reasonable in design and capable of achieving variable-speed lifting of the die-cutting lifting table, and further improves die-cutting quality and die-cutting efficiency.

Description

Technical Field

[0001] The utility model relates to a die-cutting machine, in particular to a crankshaft worm gear transmission mechanism of the die-cutting machine. Background Art

[0002] The die-cutting machine is a device specially used for post-printing processing of paper. When the die-cutting machine is performing die-cutting processing, the worm gear is driven by the worm, and then the crankshaft is driven by the worm gear. The crankshaft drives the connecting rod assembly to move, and finally drives the lower die-cutting lifting platform to rise and fall, so that the lower die-cutting plate on the lower die-cutting lifting platform cooperates with the fixed upper die-cutting plate to perform die-cutting processing on the paper. The defect of the transmission structure of the above crankshaft and worm gear is that the crankshaft and the worm gear are both coaxially arranged. When this connection transmission method is used, unless the speed of the worm is changed, the speed of the crankshaft and the worm gear is constant, that is, the lifting speed of the lower die-cutting lifting platform is the same. If the lifting speed is too fast, it may cause the lower die-cutting plate and the upper die-cutting plate to cooperate too short a time, affecting the die-cutting quality. If the lifting speed is too slow, it will affect the overall die-cutting processing efficiency. Utility Model Content

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a crankshaft worm gear transmission mechanism of a die-cutting machine for solving the above-mentioned problems.

[0004] To this end, the utility model is implemented by adopting the following scheme:

[0005] The crankshaft worm gear transmission mechanism of the die-cutting machine includes a crankshaft and a worm gear, and a mounting seat arranged corresponding to the crankshaft is used to rotatably support the crankshaft. It is characterized in that a transmission member is provided at one end of the crankshaft, and one end of the transmission member is connected to one end of a transmission block. A first limit block and a second limit block are provided on the end surface of one side of the worm gear, and the first and second limit blocks surround a limit groove. The transmission block can be slidably arranged in the limit groove, and the rotation center of the crankshaft and the rotation center of the worm gear are staggered with each other.

[0006] A connecting block extends from one end of the crankshaft, a connecting groove for inserting the connecting block is provided on the transmission member, threaded holes are provided on both sides of the transmission member corresponding to the connecting groove, a through hole corresponding to the threaded hole is provided on the connecting block, and a bolt is screwed into the threaded hole and passes through the through hole.

[0007] The transmission member is provided with a positioning groove at the inner side wall corresponding to the connecting groove, and the connecting block is provided with a positioning member movable in the positioning groove.

[0008] A transmission shaft is arranged at one end of the transmission member, a bearing for rotatably supporting the transmission shaft is arranged on the transmission block, a surrounding transmission pin is arranged on the transmission block, and a transmission groove for inserting the transmission pin is arranged on the transmission shaft.

[0009] The crankshaft worm gear transmission mechanism of the die-cutting machine of the above technical solution adopts a transmission member and a slidable transmission block to transmit the power between the worm wheel and the crankshaft. Since the rotation center of the crankshaft and the rotation center of the worm wheel are staggered, during the rotation of the crankshaft, the transmission member will drive the transmission block to move to a certain extent in the limit groove. At this time, the linear speed of the transmission block and the transmission member at one end of the transmission will change, causing the rotation speed of the transmission member and the crankshaft to change, and this change is periodic during the process of one rotation of the crankshaft, so that the rotation speed of the crankshaft when driving the lower die-cutting lifting platform and the lower die-cutting plate to cooperate with the upper die-cutting plate slows down, increasing the time for the upper and lower die-cutting plates to cooperate in die-cutting, ensuring the die-cutting quality, and the rotation speed of the crankshaft when the lower die-cutting platform is away from the upper die-cutting plate becomes faster, which speeds up the movement speed of the lower die-cutting platform when no die-cutting processing is performed, thereby saving time and increasing the die-cutting processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model has the following drawings:

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 The split structure diagram of

[0013] Figure 3 for Figure 2 A partial enlarged view of the area pointed by A in the middle;

[0014] Figure 4 It is a structural diagram of the transmission member of the utility model. DETAILED DESCRIPTION

[0015] As shown in the figure, the crankshaft worm gear transmission mechanism of the die-cutting machine disclosed in the utility model includes a crankshaft 2 and a worm gear 19. The crankshaft 2 has an arranged mounting seat 1 to support the crankshaft 2 in rotation. A transmission member 3 is provided at one end of the crankshaft 2. Specifically, a connecting block 10 extends from one end of the crankshaft 2. The transmission member 3 is provided with a connecting groove 5 for inserting the connecting block 10. The transmission member 3 is provided with threaded holes 18 on both sides corresponding to the connecting groove 5. The connecting block 10 is provided with a through hole 16 corresponding to the threaded hole 18. The bolt 15 is screwed into the threaded hole 18 and passes through the through hole 16 to achieve a fixed connection between the transmission member 3 and the connecting block 10. Furthermore, the transmission member 3 is provided with a positioning groove 7 at the inner side wall corresponding to the connecting groove 5. The connecting block 10 is provided with a positioning member 4 that can move in the positioning groove 7 to facilitate the positioning and insertion between the transmission member 3 and the connecting block 10. In addition, a transmission shaft 8 is provided at one end of the transmission member 3, a bearing 11 for rotationally supporting the transmission shaft 8 is provided on the transmission block 6, a transmission pin 12 is provided on the transmission block 6, and a transmission groove 17 for inserting the transmission pin 12 is provided on the transmission shaft 8, so as to facilitate the transmission of the transmission member 3 by the transmission block 6. One end of the transmission member 3 is connected to one end of the transmission block 6, and a first limit block 9 and a second limit block 13 are provided on the end surface of one side of the worm gear 19, and the first and second limit blocks surround a limit groove 14, and the transmission block 6 is slidably arranged in the limit groove 14, and the rotation center of the crankshaft 2 and the rotation center of the worm gear 19 are staggered with each other.

[0016] In the structure of the utility model, the worm gear 19 of the worm drive rotates, and the limiting groove 14 surrounded by the first and second limiting blocks on the worm gear 19 will drive the transmission block 6 to rotate, and at the same time drive the transmission member 3 to move, thereby driving the crankshaft 2 to rotate. Since the rotation center of the crankshaft 2 and the rotation center of the worm gear 19 are staggered, during the rotation of the crankshaft 2, the transmission member 3 will drive the transmission block 6 to move to a certain extent in the limiting groove 14. At this time, the linear speed of one end of the transmission block 6 and the transmission member 3 for transmission will change, so that the rotation speed of the transmission member 3 and the crankshaft 2 driven by it will change, and this change will change periodically during the process of one circle of the crankshaft 2, so that the rotation speed of the crankshaft 2 when driving the lower die-cutting lifting platform and the lower die-cutting plate to cooperate with the upper die-cutting plate slows down, increases the time for the upper and lower die-cutting plates to cooperate in die-cutting, ensures the die-cutting quality, and the rotation speed of the crankshaft when the lower die-cutting platform is away from the upper die-cutting plate becomes faster, speeding up the movement speed of the lower die-cutting platform when no die-cutting processing is performed, thereby saving time and increasing the die-cutting processing efficiency.

Claims

1. A crankshaft worm gear transmission mechanism for a die-cutting machine, comprising a crankshaft (2) and a worm gear (19), wherein a mounting seat (1) arranged in an array corresponding to the crankshaft (2) is provided to rotatably support the crankshaft (2), and wherein the mounting seat (1) is arranged in an array corresponding to the crankshaft (2) to rotatably support the crankshaft (2), and wherein the mounting seat (1) is provided to support the crankshaft (2) ... A transmission member (3) is provided at one end of the crankshaft (2), one end of the transmission member (3) is connected to one end of a transmission block (6), a first limit block (9) and a second limit block (13) are provided on an end surface of one side of the worm wheel (19), the first and second limit blocks surround a limit groove (14), the transmission block (6) is slidably arranged in the limit groove (14), and the rotation center of the crankshaft (2) and the rotation center of the worm wheel (19) are staggered.

2. The crankshaft worm gear transmission mechanism of the die-cutting machine according to claim 1, characterized in that A connecting block (10) extends from one end of the crankshaft (2); a connecting groove (5) is provided on the transmission member (3) for the connecting block (10) to be inserted; threaded holes (18) are provided on two sides of the transmission member (3) corresponding to the connecting groove (5); a through hole (16) corresponding to the threaded hole (18) is provided on the connecting block (10); and a bolt (15) is screwed into the threaded hole (18) and passes through the through hole (16).

3. The crankshaft worm gear transmission mechanism of the die-cutting machine according to claim 2, characterized in that The transmission member (3) is provided with a positioning groove (7) at an inner side wall corresponding to the connection groove (5), and the connection block (10) is provided with a positioning member (4) movable in the positioning groove (7).

4. The crankshaft worm gear transmission mechanism of the die-cutting machine according to claim 1, characterized in that A transmission shaft (8) is disposed at one end of the transmission member (3); a bearing (11) for rotatably supporting the transmission shaft (8) is disposed on the transmission block (6); a transmission pin (12) is disposed around the transmission block (6); and a transmission groove (17) for inserting the transmission pin (12) is disposed on the transmission shaft (8).

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