A conjugate cam driving mechanism for a double-color offset printing press

Abstract

The present invention relates to the technical field of offset printing machines, and in particular to a conjugate cam driving mechanism of a split-color offset printing machine, comprising a fixed block, wherein a motor is arranged on the upper surface of the fixed block, wherein the output shaft of the motor is connected to a roller shaft, wherein a slot is arranged on the roller shaft, wherein one end of the roller shaft away from the motor is connected to a main cam, wherein a slave cam is arranged on one side of the main cam, wherein the slave cam and the main cam are an integrally formed structure, wherein a second circular hole is arranged on the slave cam, wherein the second circular hole passes through the slave cam and the main cam in sequence, wherein a fixed ring is arranged on the slave cam, wherein a concave hole is arranged on the fixed ring, wherein the concave hole passes through the fixed ring, and wherein a slide plate is arranged on the fixed ring. The conjugate cam driving mechanism of the split-color offset printing machine can well disassemble the conjugate cam by means of the arranged fixed ring, slide plate and baffle plate, thereby facilitating the disassembly and replacement of the conjugate cam by the staff, thereby greatly improving the working efficiency, achieving the effect of saving time and labor, and enhancing the practicality.

Description

Technical Field

[0001] The invention relates to the technical field of offset printing presses, in particular to a conjugate cam driving mechanism of a double-color offset printing press. Background Art

[0002] An offset printing press is a type of lithographic printing press. During printing, the printed image and text are first printed from the printing plate onto a rubber cylinder, and then transferred to paper by the rubber cylinder. Offset printing presses can be divided into sheet-fed offset printing presses and web offset printing presses according to the different paper feeding methods; they can be divided into single-color, two-color, four-color and multi-color printing presses according to the number of printing colors completed in one paper feed; they can be divided into small offset printing presses, six-page, four-page, folio and full-sheet printing presses according to the maximum paper format they can print on. In addition, there are duplex printing presses that can print on both sides at the same time in one paper feed. A folio two-color offset printing press is a lithographic printing press. The machine is used to print high-end commercial printed materials and packaging printed materials. It is the mainstream of modern paper printing. The conjugate cam driving mechanism is an indispensable part in the two-color offset printing machine. The conjugate cam will inevitably be worn out after long-term use. However, the conjugate cam driving mechanisms in the existing two-color offset printing machines are directly connected to the conjugate cam through a motor, which makes it impossible to disassemble and replace the conjugate cam, causing great inconvenience during maintenance or replacement. In view of this, we propose a conjugate cam driving mechanism for a two-color offset printing machine. Summary of the invention

[0003] The object of the present invention is to provide a conjugate cam driving mechanism for a double-color offset printing press, so as to solve the problem that the conjugate cam cannot be disassembled and replaced in the above-mentioned background technology, causing great inconvenience during maintenance or replacement.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A conjugate cam driving mechanism of a double-color offset printing machine comprises a fixed block, a motor is arranged on the upper surface of the fixed block, a roller shaft is connected to the output shaft of the motor, a slot is arranged on the roller shaft, a main cam is connected to the end of the roller shaft away from the motor, a slave cam is arranged on one side of the main cam, the slave cam and the main cam are an integrally formed structure, a second circular hole is arranged on the slave cam, the second circular hole passes through the slave cam and the main cam in sequence, a fixed ring is arranged on the slave cam, a concave hole is arranged on the fixed ring, the concave hole passes through the fixed ring, a slide plate is arranged on the fixed ring, a T-shaped slide block is symmetrically arranged on one side of the slide plate, and a plug rod is connected to the lower surface of the slide plate;

[0006] A T-shaped groove is symmetrically provided on one side of the slave cam away from the main cam, a threaded hole is provided on one side of the T-shaped groove, and bearings are vertically symmetrically provided on the other side of the T-shaped groove, a rotating rod is provided between the two bearings, and the two ends of the rotating rod are respectively rotatably connected to the two bearings, a baffle is connected to the rotating rod, a first circular hole is opened on the baffle, and a bolt is provided on one side of the first circular hole.

[0007] As a preferred solution of the present invention, the area of ​​the fixed circular ring is the same as the area of ​​the second circular hole, and the center positions of the fixed circular ring and the second circular hole correspond one to one.

[0008] As a preferred solution of the present invention, the fixing ring is fixed to the slave cam by welding.

[0009] As a preferred solution of the present invention, an anti-slip ring is provided on the inner surface of the fixing ring, and the anti-slip ring is fixed to the fixing ring by glue.

[0010] As a preferred solution of the present invention, the T-shaped sliding block matches the size of the T-shaped groove, and the T-shaped sliding block is slidably connected to the T-shaped groove.

[0011] As a preferred solution of the present invention, the slide plate is arc-shaped, and the slide plate fits the slave cam.

[0012] As a preferred solution of the present invention, the roller shaft is plug-fitted with the second circular hole and the fixed circular ring in sequence.

[0013] As a preferred solution of the present invention, the bolt passes through the first circular hole and is threadedly connected to the threaded hole.

[0014] As a preferred solution of the present invention, the insertion rod passes through the concave hole and is plugged into the slot.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the conjugate cam driving mechanism of the double-sided two-color offset printing machine can well disassemble the conjugate cam through the set fixed ring, slide plate and baffle, so that the staff can easily disassemble and replace the conjugate cam, which greatly improves the work efficiency, achieves the effect of saving time and labor, and enhances practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the slave cam in the present invention;

[0018] Figure 3 It is a schematic diagram of the roller structure in the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the slide plate in the present invention;

[0020] Figure 5 It is a schematic diagram of the fixed ring structure in the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the slave cam in the present invention;

[0022] Figure 7 For the present invention Figure 1 A schematic diagram of the structure enlargement at the center A;

[0023] Figure 8 It is a schematic diagram of the baffle structure in the present invention.

[0024] In the figure: 1, fixed block; 2, motor; 3, roller; 31, slot; 4, main cam; 5, slave cam; 51, T-shaped groove; 52, threaded hole; 53, bearing; 54, rotating rod; 55, baffle; 551, first circular hole; 6, second circular hole; 7, fixed ring; 71, concave hole; 72, anti-skid ring; 8, bolt; 9, slide plate; 91, T-shaped slider; 92, plug rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0028] See also Figure 1-8 , the present invention provides a technical solution:

[0029] A conjugate cam drive mechanism for a double-color offset printing press, such as Figure 1-5 As shown, it includes a fixed block 1, a motor 2 is provided on the upper surface of the fixed block 1, the output shaft of the motor 2 is connected to a roller shaft 3, a slot 31 is provided on the roller shaft 3, an end of the roller shaft 3 away from the motor 2 is connected to a main cam 4, a slave cam 5 is provided on one side of the main cam 4, the slave cam 5 and the main cam 4 are an integrally formed structure, a second circular hole 6 is provided on the slave cam 5, the second circular hole 6 passes through the slave cam 5 and the main cam 4 in sequence, a fixed ring 7 is provided on the slave cam 5, a concave hole 71 is provided on the fixed ring 7, the concave hole 71 passes through the fixed ring 7, a slide plate 9 is provided on the fixed ring 7, a T-shaped slide block 91 is symmetrically provided on one side of the slide plate 9, and a plug rod 92 is connected to the lower surface of the slide plate 9.

[0030] Specifically, the area of ​​the fixed ring 7 is the same as the area of ​​the second circular hole 6, and the center positions of the fixed ring 7 and the second circular hole 6 correspond one to one, so that the roller shaft 3 can pass through the fixed ring 7 and the second circular hole 6, thereby connecting the roller shaft 3 with the main cam 4 and the slave cam 5, so that the motor 2 can ensure the rotation of the main cam 4 and the slave cam 5 in the working state.

[0031] In this embodiment, the fixed ring 7 is fixed to the slave cam 5 by welding, so that the fixed ring 7 and the slave cam 5 can be tightly connected together.

[0032] In addition, an anti-slip ring 72 is provided on the inner surface of the fixed ring 7, and the anti-slip ring 72 is fixed to the fixed ring 7 by glue, so that the friction between the roller shaft 3 and the fixed ring 7 is enhanced through the anti-slip ring 72, thereby making the connection between the roller shaft 3 and the fixed ring 7 more stable.

[0033] Specifically, the T-shaped slide block 91 matches the size of the T-shaped groove 51 , and the T-shaped slide block 91 is slidably connected to the T-shaped groove 51 , thereby ensuring that the slide plate 9 can move up and down on the cam 5 .

[0034] In this embodiment, the slide plate 9 is in an arc shape, and the slide plate 9 fits closely with the slave cam 5 , so that the connection between the slide plate 9 and the slave cam 5 is tighter.

[0035] In addition, the roller shaft 3 is plugged into the second circular hole 6 and the fixed ring 7 in sequence, ensuring that the main cam 4, the slave cam 5 and the fixed ring 7 can be removed from the roller shaft 3, thereby ensuring the replacement of the main cam 4, the slave cam 5 and the fixed ring 7.

[0036] It is worth noting that the motor 2 in this embodiment adopts a single-phase asynchronous motor of model 5IK40RGN-C produced by Shenzhen Xingdongchang Electromechanical Co., Ltd., and its supporting circuits and power supplies can also be provided by the manufacturer. In addition, the circuits, electronic components and modules involved in the present invention are all prior art, which can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to the internal structure and methods.

[0037] like Figure 6-8 As shown, a T-shaped groove 51 is symmetrically provided on the side of the cam 5 away from the main cam 4, a threaded hole 52 is provided on one side of the T-shaped groove 51, and a bearing 53 is vertically symmetrically provided on the other side of the T-shaped groove 51. A rotating rod 54 is provided between the two bearings 53, and the two ends of the rotating rod 54 are rotatably connected to the two bearings 53 respectively. A baffle plate 55 is connected to the rotating rod 54, and a first circular hole 551 is opened on the baffle plate 55. A bolt 8 is provided on one side of the first circular hole 551.

[0038] In this embodiment, the bolt 8 passes through the first circular hole 551 and is threadedly connected to the threaded hole 52, so that the slide plate 9 is fixed in the T-shaped groove 51, preventing the slide plate 9 from sliding in the groove 51 due to its own gravity when the cam 5 rotates, thereby preventing the roller shaft 3 and the fixed ring 7 from falling off.

[0039] In addition, the insert rod 92 passes through the recessed hole 71 and is plugged into the slot 31. When the insert rod 92 is inserted into the slot 31, the baffle 55 will be connected to the cam 5, so that the baffle 55 limits the slide plate 9, thereby ensuring that the roller shaft 3 can be tightly connected to the fixed ring 7, thereby ensuring the stability of the roller shaft 3 in the fixed ring 7.

[0040] When the conjugate cam drive mechanism of the double-color offset printing machine of this embodiment is in use, the staff turns on the external power supply of the motor 2 to make the motor 2 work. At this time, the output shaft of the motor 2 will drive the rotation of the roller shaft 3, thereby rotating the main cam 4 and the slave cam 5 to enter the working state. When it is found that the main cam 4 and the slave cam 5 are damaged, the staff will rotate the bolt 8 from the threaded hole 52 under the action of external force, turn the baffle 55 to one side, and pull the slide plate 9 upwards, thereby pulling the rod 92 out of the slot 31. At this time, the main cam 4 and the slave cam 5 can be removed from the roller shaft 3, thereby achieving the effect of easy replacement.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A conjugate cam drive mechanism for a two-color offset printing press, comprising a fixed block (1), characterized in that: The upper surface of the fixed block (1) is provided with a motor (2), the output shaft of the motor (2) is connected to a roller shaft (3), a slot (31) is provided on the roller shaft (3), one end of the roller shaft (3) away from the motor (2) is connected to a main cam (4), a slave cam (5) is provided on one side of the main cam (4), the slave cam (5) and the main cam (4) are an integrally formed structure, a second circular hole (6) is provided on the slave cam (5), the second circular hole (6) passes through the slave cam (5) and the main cam (4) in sequence, a fixing ring (7) is provided on the slave cam (5), a concave hole (71) is provided on the fixing ring (7), the concave hole (71) passes through the fixing ring (7), a slide plate (9) is provided on the fixing ring (7), a T-shaped slide block (91) is symmetrically provided on one side of the slide plate (9), and a plug rod (92) is connected to the lower surface of the slide plate (9); A T-shaped groove (51) is symmetrically provided on one side of the slave cam (5) away from the main cam (4); a threaded hole (52) is provided on one side of the T-shaped groove (51); a bearing (53) is vertically symmetrically provided on the other side of the T-shaped groove (51); a rotating rod (54) is provided between the two bearings (53); two ends of the rotating rod (54) are respectively rotatably connected to the two bearings (53); a baffle (55) is connected to the rotating rod (54); a first circular hole (551) is provided on the baffle (55); a bolt (8) is provided on one side of the first circular hole (551); The area of ​​the fixed circular ring (7) is the same as the area of ​​the second circular hole (6), and the center positions of the fixed circular ring (7) and the second circular hole (6) correspond one to one; The T-shaped sliding block (91) matches the size of the T-shaped groove (51), and the T-shaped sliding block (91) is slidably connected to the T-shaped groove (51).

2. The conjugate cam driving mechanism of the folio two-color offset printing press according to claim 1, characterized in that: The fixed ring (7) is fixed to the slave cam (5) by welding.

3. The conjugate cam driving mechanism of the folio two-color offset printing press according to claim 1, characterized in that: The inner surface of the fixed circular ring (7) is provided with an anti-skid ring (72), and the anti-skid ring (72) is fixed to the fixed circular ring (7) by glue.

4. The conjugate cam driving mechanism of a two-color offset printing press according to claim 1, characterized in that: The slide plate (9) is in an arc shape, and the slide plate (9) fits the slave cam (5).

5. The conjugate cam driving mechanism of the folio two-color offset printing press according to claim 1, characterized in that: The roller shaft (3) is plug-fitted with the second circular hole (6) and the fixed circular ring (7) in sequence.

6. The conjugate cam driving mechanism of the folio two-color offset printing press according to claim 1, characterized in that: The bolt (8) passes through the first circular hole (551) and is threadedly connected to the threaded hole (52).

7. The conjugate cam driving mechanism of a two-color offset printing press according to claim 1, characterized in that: The insertion rod (92) passes through the concave hole (71) and is plugged into the slot (31).

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