Offset press rejecting device

Abstract

The utility model discloses a waste rejecting device of an offset press, which comprises a plurality of speed-multiplied air suction mechanisms connected to a power transmission mechanism, the speed-multiplied air suction mechanisms adsorb and convey paper, and is characterized in that each speed-multiplied air suction mechanism comprises a mounting plate, a fixed air suction assembly is fixedly arranged on one side of the mounting plate, a linear driving assembly is arranged on the other side of the mounting plate, and the speed-multiplied air suction mechanisms are connected to the power transmission mechanism. The linear driving assembly is connected with the movable air suction assembly and drives the movable air suction assembly to do reciprocating translation relative to the fixed air suction assembly. According to the waste rejecting device of the offset press, the movable air suction assembly rapidly moves in a reciprocating mode to convey paper, the paper conveying efficiency is improved, and the paper jamming phenomenon is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field especially relates to a rubber printing machine printing product online detection after rubber printing machine waste stripping device. BACKGROUND

[0002] At present, the printing machine whole machine technology and performance of domestic printing industry are quite good, but along with the machine use life increase, the equipment is aging year by year, and the product quality produced is greatly discounted. For example, in the printing process, occasionally, overprint is not accurate, or small ink (dirty) point is generated, if the root cause of the problem is not found in time, the next process will be affected, or the waste product rate is directly increased.

[0003] At present, many printing enterprises adopt manual waste stripping, and the efficiency is low, the labor intensity is big, and the actual production demand is far from met. Under this kind of reality, a stable and efficient automatic rubber printing machine waste stripping device that can replace manual work is urgently needed.

[0004] Many printing defective product rubber printing machine waste stripping devices exist on the market, and the existing rubber printing machine waste stripping device is not fast for paper transmission speed, resulting in low waste stripping efficiency. CONTENT OF THE UTILITY MODEL

[0005] The technical problem to be solved by the utility model is: in order to solve the technical problem of slow paper feeding speed and low waste stripping efficiency in the prior art, the utility model provides a rubber printing machine waste stripping device, which realizes the transportation of paper by the rapid reciprocating movement of the movable air suction assembly, improves the paper conveying efficiency and avoids the paper jam phenomenon.

[0006] The utility model adopts the technical scheme that: a rubber printing machine waste stripping device is connected to a plurality of speeded air suction mechanisms on a power transmission mechanism, the speeded air suction mechanism absorbs and conveys paper, the speeded air suction mechanism includes a mounting plate, a fixed air suction assembly is fixed on one side of the mounting plate, a linear drive assembly is arranged on the other side, the linear drive assembly is connected with a movable air suction assembly and drives the movable air suction assembly to reciprocate and translate relative to the fixed air suction assembly.

[0007] Further, in order to make the movable air suction assembly reciprocate and move relative to the fixed air suction assembly, the linear drive assembly includes a first air cylinder, a transmission gear is rotatably connected to the first air cylinder, fixed and movable gear racks are engaged on the upper and lower sides of the transmission gear, the fixed gear rack is fixed on the mounting plate through the mounting plate, the first air cylinder pushes the transmission gear to translate, so that the transmission gear drives the movable gear rack to move synchronously, the movable gear rack is connected to a movable plate, the upper end of the movable plate is connected with the movable air suction assembly, and the lower end is movably connected to a slide rail.

[0008] Further, in order to make the movable suction assembly and the fixed suction assembly adsorb and transport the paper, the movable suction assembly and the fixed suction assembly each comprise a suction belt and a suction box for forming negative pressure, the suction belt is connected with a driving wheel and a driven wheel set to rotate circularly, and the driving wheel is connected with a power transmission mechanism.

[0009] Further, in order to install the driven wheel set, one of the driven wheels in the driven wheel set connected with the suction belt of the movable suction assembly is connected on the movable plate and moves synchronously with the movable plate, and the rest of the driven wheels are connected on the mounting plate.

[0010] Further, in order to drive the movable suction assembly and the fixed suction assembly to work synchronously, the power transmission mechanism comprises a servo motor synchronous pulley assembly, a transmission shaft is connected on the servo motor synchronous pulley assembly, the transmission shaft passes through the mounting plate and is connected with the driving wheel, an air pipe is fixed on the power transmission mechanism, the air pipe is connected with the suction box, a shaft sleeve is arranged in the driving wheel, the shaft sleeve is sleeved on the transmission shaft to rotate by the transmission shaft, the shaft sleeve slides along the transmission shaft, and the transmission shaft further has a guide rod and a bearing rod connected with the mounting plate on the front and back sides.

[0011] Further, in order to adjust the distance between the multiple-speed suction mechanisms to adapt to paper of different sizes, a distance adjusting mechanism is further arranged, the distance adjusting mechanism comprises a servo motor chain wheel connecting assembly, the servo motor chain wheel connecting assembly is connected with a bidirectional screw through a tensioning assembly, a nut is connected on the bidirectional screw, and the mounting plate of at least one of the multiple-speed suction mechanisms is connected with the nut.

[0012] Further, in order to make the adsorbed paper more compact, the fixed suction assembly and the movable suction assembly are arranged side by side and staggered in front and back, the paper is adsorbed and transported by the movable suction assembly and then by the fixed suction assembly.

[0013] Further, in order to avoid paper jamming caused by paper warping and collect the paper, a press wheel mechanism is arranged at the upper end of the movable suction assembly, and a paper collecting bin mechanism is arranged at the lower end of the fixed suction assembly, the paper is flattened by the press wheel mechanism and then sent into the paper collecting bin mechanism through the movable suction assembly and the fixed suction assembly.

[0014] Further, in order to make the paper be adsorbed by the suction belt better, the press wheel mechanism comprises a positioning frame, the positioning frame is installed on a rack, a second air cylinder is arranged on the positioning frame, a sliding block is fixed on the positioning frame, the sliding block is connected with a guide rail, a press wheel is rotatably connected at the lower end of the guide rail, and the guide rail is connected with the second air cylinder through a connecting piece.

[0015] Further, in order to adapt to the collection of paper of different sizes, the paper collecting bin mechanism comprises a back plate, the front surface of the back plate is provided with a height-adjustable air blowing plate, and movable baffles are connected to the two sides of the back plate.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1、 the offset press device of rejecting waste, through the air suction belt of movable air suction assembly and fixed air suction assembly adsorption and transport paper, linear drive assembly can drive movable air suction assembly fast reciprocating movement, improve the paper conveying speed, improve production efficiency.

[0018] 2、 the offset press device of rejecting waste, through the position of individual speed air suction mechanism adjustment mechanism, to adapt to different sizes of paper.

[0019] 3、 the offset press device of rejecting waste, adopt pressure roller mechanism to the warping part of paper and flatten, make it better adsorption on speed air suction mechanism, avoid the problem of paper jam.

[0020] 4、 the offset press device of rejecting waste, through the air blowing plate and collect paper on the back plate, through the adjustable baffle and air blowing plate collection different sizes of paper, can be applied to a variety of scenes. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model is further described below in connection with the drawings and examples.

[0022] Figure 1 It is the three-dimensional structure schematic diagram of offset press device of rejecting waste;

[0023] Figure 2 It is left view of offset press device of rejecting waste;

[0024] Figure 3 It is the structure schematic diagram of speed air suction mechanism;

[0025] Figure 4 It is the structure schematic diagram of another view of speed air suction mechanism;

[0026] Figure 5 It is the structure schematic diagram of power transmission mechanism;

[0027] Figure 6 It is the structure schematic diagram of variable distance mechanism;

[0028] Figure 7 It is the structure schematic diagram of pressure roller mechanism;

[0029] Figure 8 It is the structure schematic diagram of paper collecting bin mechanism;

[0030] Figure 9Fig. 2 is a structural schematic view of the paper collecting bin mechanism from another perspective;

[0031] Fig. 1 is a structural schematic view of the paper collecting bin mechanism;

[0032] 1. A multiple-speed air suction mechanism, 11. A mounting plate, 12. A fixed air suction assembly, 13. A linear driving assembly, 14. A movable air suction assembly, 101. An air suction belt, 102. An air suction box, 103. A driving wheel, 104. A driven wheel, 105. A shaft sleeve, 131. A first air cylinder, 132. A transmission tooth, 133. A fixed rack, 134. A movable rack, 135. A connecting plate, 136. A movable plate, 137. A slide rail;

[0033] 2. A power transmission mechanism, 21. A servo motor synchronous pulley assembly, 22. A transmission shaft, 23. A guide rod, 24. A load-bearing rod, 25. A breather pipe;

[0034] 3. A variable pitch mechanism, 31. A servo motor chain wheel connecting assembly, 32. A bidirectional screw rod, 33. A nut;

[0035] 4. A pressure roller mechanism, 41. A positioning frame, 42. A second air cylinder, 43. A slide block, 44. A guide rail, 45. A pressure roller;

[0036] 5. A paper collecting bin mechanism, 51. A back plate, 52. A gas blowing plate, 53. A baffle, 54. A hand-operated adjusting assembly for adjusting the height, 55. An adjusting assembly. DETAILED DESCRIPTION

[0037] The utility model will be explained in further detail in combination with the drawings. These drawings are all simplified schematic views, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the structure related to the utility model.

[0038] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the features limited as "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more.

[0039] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection", "connection" should be broad sense understanding, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be mechanical connection, also can be electrical connection, it can be direct connection, also can indirectly connect through intermediate medium, it can be two element internal communication, for ordinary skilled person in the art, the above-mentioned term can be understood as the specific meaning in the utility model according to specific circumstances.

[0040] As Figure 1 Indicated, a kind of offset press rejects device, offset press rejects device is arranged in offset press, offset press rejects device is connected by fan and electric cabinet component.Undesirable paper is sent into offset press rejects device by offset press detection.Paper is detected by offset press, undesirable paper is sent into offset press rejects device.The structure of fan and electric cabinet component and offset press is weakly associated with the present application, and it is conventional structure, here no longer repeat.

[0041] As Figure 2 Indicated, offset press rejects device includes presser mechanism 4, speed suction mechanism 1 and paper receiving bin mechanism 5, paper (the paper of the present application refers to undesirable paper detected by offset press) enters speed suction mechanism 1 from the arrow direction of Figure 2 Speed suction mechanism 1 is transported into paper receiving bin mechanism 5 by suction speed mechanism.

[0042] The number of speed suction mechanism 1 in the embodiment is 2, and speed suction mechanism 1 is symmetrically arranged left and right.

[0043] As Figure 3 And Figure 4 Indicated, speed suction mechanism 1 is connected on power transmission mechanism 2, and speed suction mechanism 1 adsorbs and transports paper.Suction speed mechanism 1 includes mounting plate 11, one side of mounting plate 11 is fixed with fixed suction assembly 12, the other side is equipped with linear drive assembly 13, linear drive assembly 13 is connected with movable suction assembly 14, and movable suction assembly 14 is driven to reciprocatingly translate relative to fixed suction assembly 12.

[0044] Movable suction assembly 14 and fixed suction assembly 12 all include suction belt 101 and suction box 102 forming negative pressure, suction belt 101 is connected with driving wheel 103 and driven wheel group to rotate circularly, driving wheel 103 is connected with power transmission mechanism 2.Power is transmitted to suction belt 101 by driving wheel 103, and suction belt 101 rotates circularly, paper is first adsorbed by movable suction assembly 14, then moves forward to fixed suction assembly 12, is adsorbed by fixed suction assembly 12 again, and finally falls from fixed suction assembly 12 and enters paper receiving bin mechanism 5.

[0045] The straight line driving assembly 13 comprises a first cylinder 131, a transmission tooth 132 is rotatably connected to the first cylinder 131, a fixed rack 133 and a movable rack 134 are engaged on the upper and lower sides of the transmission tooth 132, the fixed rack 133 is fixedly connected to the mounting plate 11 through a connecting plate 135, the first cylinder 131 pushes the transmission tooth 132 to translate, so that the transmission tooth 132 drives the movable rack 134 to move synchronously, the movable rack 134 is connected to a movable plate 136, the upper end of the movable plate 136 is connected to the movable air suction assembly 14, and the lower end is movably connected to a sliding rail 137. The transmission tooth 132 at the front end is driven to move synchronously in the process that the cylinder is stretched and retracted, since the transmission tooth 132 is rotatably connected to the mounting column at the front end of the cylinder, the transmission tooth 132 rotates relative to the fixed rack 133 while moving, since the fixed rack 133 does not displace, the transmission tooth 132 transmits power to the movable rack 134 while rotating, the movable rack 134 drives the movable plate 136 to move on the sliding rail 137 synchronously, the air suction box 102 of the movable air suction assembly 14 is fixedly connected to the movable plate 136, so the movable air suction assembly 14 and the movable plate 136 move synchronously, so as to realize the reciprocating movement of the movable air suction assembly 14 relative to the fixed air suction assembly 12. The stroke of the movable rack 134 can be controlled by reasonably adjusting the gear speed ratio of the transmission tooth 132 and the sliding rack, and the fast movement of the movable air suction assembly 14 is realized by cooperating with the high-speed response pen-shaped cylinder and the high-frequency electromagnetic valve.

[0046] In order to ensure that the movable air suction assembly 14 can move reciprocally and does not affect the power transmission of the driving pulley 103 and the driven pulley, one of the driven pulleys 104 (such as Figure 4 ) in the driven pulley set connected to the air suction belt 101 of the movable air suction assembly 14 is connected to the movable plate 136 and moves synchronously with the movable plate 136, and the rest of the driven pulleys are connected to the mounting plate 11.

[0047] The fixed air suction assembly 12 and the movable air suction assembly 14 are staggered side by side, the paper is adsorbed and conveyed to the fixed air suction assembly 12 by the movable air suction assembly 14. In the process that the paper moves from the movable air suction assembly 14 to the fixed air suction assembly 12, not only is the paper conveyed by the transmission of the air suction belt 101, but the transmission speed of the paper is further increased by the reciprocating movement of the movable air suction assembly 14, so that the transmission speed of the paper is greatly improved.

[0048] As Figure 5As shown, the power transmission mechanism 2 comprises a servo motor synchronous pulley assembly 21, a transmission shaft 22 is connected to the servo motor synchronous pulley assembly 21, the transmission shaft 22 passes through the mounting plate 11 and is connected with the driving wheel 103, the transmission shaft 22 has a guide rod 23 and a load bearing rod 24 connected with the mounting plate 11 on the front and back sides, the load bearing rod 24 is used to support the speed suction mechanism 1, and the guide rod 23 supports the speed suction mechanism 1 driven by the variable distance mechanism 3 to translate. The driving wheel 103 is provided with a shaft sleeve 105, the shaft sleeve 105 is sleeved on the transmission shaft 22 and is driven to rotate by the transmission shaft 22, and the shaft sleeve 105 slides along the transmission shaft 22. The driving wheels 103 of all the movable suction assemblies 14 and the fixed suction assembly 12 are connected with the transmission shaft 22, so that the movable suction assemblies 14 and the fixed suction assembly 12 are driven to move synchronously. The shaft sleeve 105 can slide relative to the transmission shaft 22 in order to adjust the position of the speed suction mechanism 1, and the position adjustment mode will be described in detail below.

[0049] The power transmission mechanism 2 is fixedly connected with an air pipe 25, the air pipe 25 is connected with the suction box 102, and the fan is connected with the suction box 102 through the air pipe 25, so that a negative pressure is formed in the suction box 102, and the suction belt 101 above the suction box 102 can adsorb paper.

[0050] As Figure 6 , in order to adjust the distance between the speed suction mechanisms 1 to adapt to paper of different sizes, the distance between the speed suction mechanisms 1 can also be adjusted by the variable distance mechanism 3, the variable distance mechanism 3 comprises a servo motor chain wheel connecting assembly 31, the servo motor chain wheel connecting assembly 31 is connected with a bidirectional lead screw 32 through a tensioning assembly 32, the bidirectional lead screw 32 is connected with a nut 33, and the mounting plate 11 of at least one of the speed suction mechanisms 1 is connected with the nut 33. In the embodiment, the two speed suction mechanisms 1 on the outer side are connected with the nut 33, when the servo motor chain wheel connecting assembly 31 drives the bidirectional lead screw 32 to rotate through the tensioning assembly, the speed suction mechanisms 1 on the two sides can move away from each other or move close to each other, so that the width of the entire speed suction mechanism 1 is adjusted, and then paper of different widths can be adapted.

[0051] As Figure 7 , the pressure roller mechanism 4 is located above the movable suction assembly 14, the pressure roller mechanism 4 comprises a positioning frame 41, the positioning frame 41 is installed on the rack, the positioning frame 41 is provided with a second air cylinder 42, the positioning frame 41 is fixedly provided with a sliding block 43, the sliding block 43 is connected with a guide rail 44, the guide rail 44 is rotatably connected with a pressure roller 45 at the lower end, and the guide rail 44 is connected with the second air cylinder 42 through a connecting piece. The second air cylinder 42 extends to drive the connecting piece to move downward, the connecting piece drives the sliding rail 137 to move downward synchronously along the sliding block 43, and the pressure roller 45 moves downward to approach the movable suction assembly 14, so that the paper warped on the movable suction assembly 14 is flattened, and the problem of paper jamming is avoided.

[0052] As Figure 8 And Figure 9 The paper collecting bin mechanism 5 is located at the lower end of the fixed air suction assembly 12. The paper collecting bin mechanism 5 comprises a back plate 51, the front side of the back plate 51 is provided with a height-adjustable air blowing plate 52, and the two sides of the back plate 51 are movably connected with baffle plates 53. The paper falling from the fixed air suction assembly falls between the back plate 51 and the air blowing plate 52, is blown in the hole of the air blowing plate 52, is blown to the back plate 51, space for falling of the next paper is left, and contact and friction between the papers are avoided. The left and right baffle plates 53 can prevent the falling paper from jumping out of the waste paper bin. The air blowing plate 52 can be adjusted in height 54 through a hand-operated adjusting assembly, and the baffle plate 53 can be adjusted in the transverse position through two side adjusting assemblies 55, so that the papers of different sizes can be adapted.

[0053] In conclusion, the offset press waste removing device can realize the transportation of the paper through the quick reciprocating movement of the movable air suction assembly, improve the paper conveying efficiency and avoid the paper jamming phenomenon.

[0054] The above is described according to the ideal embodiment of the utility model, through the above description, the related staff can make various changes and modifications without deviating from the technical thought of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined by the scope of the claims.

Claims

1. A waste rejection device for an offset printing machine, comprising multiple high-speed suction mechanisms (1) connected to a power transmission mechanism (2), wherein the high-speed suction mechanisms (1) adsorb and transport paper, characterized in that, The double-speed suction mechanism (1) includes a mounting plate (11). A fixed suction component (12) is fixed on one side of the mounting plate (11), and a linear drive component (13) is provided on the other side. The linear drive component (13) is connected to a movable suction component (14) and drives the movable suction component (14) to reciprocate relative to the fixed suction component (12).

2. The offset printing machine rejection device according to claim 1, characterized in that, The linear drive assembly (13) includes a first cylinder (131), on which a transmission gear (132) is rotatably connected. The transmission gear (132) has a fixed rack (133) and a movable rack (134) meshing on its upper and lower sides. The fixed rack (133) is fixedly connected to the mounting plate (11) through a connecting plate (135). The first cylinder pushes the transmission gear (132) to translate, thereby causing the transmission gear (132) to drive the movable rack (134) to move synchronously. The movable rack (134) is connected to a movable plate (136). The upper end of the movable plate (136) is connected to the movable suction assembly (14), and the lower end is movably connected to the slide rail (137).

3. The offset printing machine rejection device according to claim 2, characterized in that, Both the movable suction assembly (14) and the fixed suction assembly (12) include a suction belt (101) and a suction box (102) that forms a negative pressure. The suction belt (101) is connected to the drive wheel (103) and the driven wheel group to rotate cyclically. The drive wheel (103) is connected to the power transmission mechanism.

4. The offset printing machine rejection device according to claim 3, characterized in that, One of the driven wheels (104) in the driven wheel group connected to the suction belt (101) of the movable suction assembly (14) is connected to the movable plate (136) and moves synchronously with the movable plate (136), while the other driven wheels are connected to the mounting plate (11).

5. The offset printing machine rejection device according to claim 2 or 3, characterized in that, The power transmission mechanism (2) includes a servo motor synchronous pulley assembly (21), on which a drive shaft (22) is connected. The drive shaft (22) passes through the mounting plate (11) and is connected to the drive wheel (103). A vent pipe (25) is fixedly connected to the power transmission mechanism (2). The vent pipe (25) is connected to the suction box (102). A bushing (105) is provided inside the drive wheel (103). The bushing (105) is sleeved on the drive shaft (22) and drives it to rotate through the drive shaft (22). The bushing (105) slides along the drive shaft (22). The front and rear sides of the drive shaft (22) also have guide rods (23) and load-bearing rods (24) connected to the mounting plate (11).

6. The offset printing machine rejection device according to claim 5, characterized in that, It also includes a pitch mechanism (3), which includes a servo motor sprocket connection assembly (31). The servo motor sprocket connection assembly (31) is connected to a bidirectional lead screw (32) through a tensioning assembly. A nut (33) is connected to the bidirectional lead screw (32). At least one mounting plate (11) of the double-speed suction mechanism (1) is connected to the nut (33).

7. The offset printing machine rejection device according to claim 1, characterized in that, The fixed suction assembly (12) and the movable suction assembly (14) are arranged side by side and staggered front to back. The paper is adsorbed and conveyed to the fixed suction assembly (12) by the movable suction assembly (14).

8. The offset printing machine rejection device according to claim 7, characterized in that, The upper end of the movable suction assembly (14) is provided with a pressure roller mechanism (4), and the lower end of the fixed suction assembly (12) is provided with a paper receiving mechanism. The paper is flattened by the pressure roller mechanism (4) and fed into the paper receiving mechanism in sequence through the movable suction assembly (14) and the fixed suction assembly (12).

9. The offset printing machine rejection device according to claim 8, characterized in that, The pressure roller mechanism (4) includes a positioning frame (41), which is mounted on the machine frame. A second cylinder (42) is provided on the positioning frame (41), and a slider (43) is fixed on the positioning frame (41). The slider (43) is connected to the guide rail (44), and a pressure roller (45) is rotatably connected to the lower end of the guide rail (44). The guide rail (44) is connected to the second cylinder (42) through a connector.

10. The offset printing machine rejection device according to claim 8, characterized in that, The paper receiving mechanism (5) includes a back plate, the front of which has a height-adjustable air blowing plate (52), and baffles (53) are movably connected to both sides of the back plate (51).

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