A sheet material conveying mechanism

Abstract

The present invention relates to a disposable sanitary product production equipment, in particular to a sheet material conveying mechanism, comprising a base, a fixed shaft is fixed on the base, a cam plate is fixed at one end of the fixed shaft, the other end of the fixed shaft is rotatably connected to a rotating bearing seat, a rotating disk is provided on the rotating bearing seat, a suction cup assembly is installed on the rotating disk, a sliding guide rail is axially arranged on the rotating disk, a connecting shaft is connected between the cam groove and the sliding guide rail, a rocker bar, a first connecting rod and a second connecting rod are connected between the rotating assembly and the cam plate, a rocker bar fixing seat is fixed on the rotating disk, a first connecting rod fixing seat is fixed on the suction cup fixing seat, one end of the first connecting rod is rotatably connected to the first connecting rod fixing seat, the other end of the first connecting rod is hinged to the rocker bar, the other end of the rocker bar is rotatably connected to the rocker bar fixing seat, one end of the second connecting rod is hinged to the rocker bar, and the other end of the second connecting rod is rotatably connected to the connecting shaft. The present invention improves the position accuracy and stability of the terminal rotating suction disk during operation.

Description

Technical Field

[0001] The invention relates to a disposable sanitary product production device, in particular to a sheet material conveying mechanism. Background Art

[0002] Patent No. 201720953026.7 (a sheet material conveying mechanism) and 201720953021.4 (a sheet material conveying mechanism) disclose a solution for variable speed transmission of objects on the circumference. Through the compound movement of multiple sets of connecting rods and cam mechanisms, the angular velocity of each adsorption device running on the circular guide rail is changed, so as to form a speed difference between the receiving and discarding positions. The sheet material can change the spacing between each piece of material after passing through this device. The internal structure of this device is relatively complex. Each unit needs to use multiple sets of connecting rods to change the pitch. The joints at both ends of each connecting rod need to rotate during operation. During the manufacturing process, a certain gap needs to be left when the rotating shaft and the hole are matched. In this way, multiple sets of connecting rods are operated through the cooperation of joints, and the adsorption disk on the outer circle follows the connecting rod. During the operation, all accumulated deviations are transmitted to the adsorption disk at the end, which causes the adsorption disk to have a certain shaking on the circumference, and the adsorbed sheet material will have a deviation in the front and rear position in the direction of operation. Summary of the invention

[0003] In order to solve the problem that the accuracy of the existing sheet material conveying mechanism does not meet the requirements, the present invention provides a sheet material conveying mechanism which reduces the number of matching joints and improves the accuracy of operating parts.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A sheet material conveying mechanism comprises a base, a fixed shaft is fixed on the base, a cam plate is fixed on one end of the fixed shaft, a rotating assembly is connected to the other end of the fixed shaft, the rotating assembly comprises a rotating bearing seat rotatably connected to the fixed shaft, a rotating disk is fixed or integrally formed on the rotating bearing seat, a suction cup assembly is installed on the outer edge of the rotating disk, the suction cup assembly comprises a suction cup fixing seat sliding along the flange of the rotating disk, a suction cup is fixed or integrally formed on the suction cup fixing seat, and a second suction pipe joint is connected to the suction cup.

[0006] A sliding guide rail is axially provided on the rotating disk, a cam groove is provided on the cam disk, a connecting shaft is installed between the rotating disk and the cam disk, one end of the connecting shaft slides in the cam groove, and the other end of the connecting shaft slides along the sliding guide rail, a connecting rod mechanism is provided between the rotating assembly and the cam disk, the connecting rod mechanism comprises a rocker rod, a first connecting rod and a second connecting rod, a rocker rod fixing seat is fixed on the rotating disk, a first connecting rod fixing seat is fixed on the suction cup fixing seat, one end of the first connecting rod is rotatably connected to the first connecting rod fixing seat, the other end of the first connecting rod is rotatably connected to one end of the rocker rod, the other end of the rocker rod is rotatably connected to the rocker rod fixing seat, one end of the second connecting rod is hinged on the rocker rod, and the other end of the second connecting rod is rotatably connected to the connecting shaft.

[0007] Furthermore, a main transmission wheel is fixed on the rotating bearing seat to drive the rotating bearing seat, and the main transmission wheel is a gear or a pulley.

[0008] Furthermore, a cam roller for sliding in the cam groove is installed on the connecting shaft.

[0009] Furthermore, the suction cup has a plurality of suction holes communicated with the second suction pipe, a negative pressure bin is fixed on the base, the negative pressure bin is connected to a plurality of negative pressure intervals, a negative pressure interface is provided on the negative pressure interval, a suction rotating disk is provided outside the negative pressure bin, the suction rotating disk rotates synchronously with the rotating assembly, the first suction pipe joints are evenly distributed circumferentially on the suction rotating disk, the number of the second suction pipe joints is the same as the number of the first suction pipe joints, and a hose is connected between the first suction pipe joints and the second suction pipe joints.

[0010] Furthermore, a guide roller matching the flange of the rotating disk is provided on the suction cup fixing seat, the guide roller comprises an upper roller and a lower roller, and the flange of the rotating disk is clamped between the upper roller and the lower roller.

[0011] Furthermore, the suction cup assembly is a long box structure, the top of the box is a suction cup, the adsorption surface of the suction cup is an adsorption arc surface, and many adsorption holes are processed on the adsorption arc surface. Each suction cup can adsorb one or more sheets of sheet materials at a time for transfer. The suction cup assembly is installed on the flange of the rotating disk through the four groups of guide rollers on the suction cup fixing seat.

[0012] Furthermore, the cam groove curve of the cam plate is a plurality of groups of arc curves and straight line segments smoothly spliced ​​together, and the cam plate with different curves needs to be replaced according to the different expansion distances required for the sheet material.

[0013] Beneficial effects: The sheet material conveying mechanism of the present invention adopts the current three-group connecting rod mechanism to replace the original five-group connecting rod mechanism. Under the premise of achieving the same result, the entire mechanism reduces the use of two groups of connecting rods and connecting rod fixed rotating disks, simplifies the internal structure of the entire component, and improves the position accuracy and stability of the terminal rotating adsorption disk during operation. The entire mechanism is more convenient and simple during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 It is a front view of the sheet material conveying mechanism of the present invention;

[0016] Figure 2 A partial cross-sectional view of the sheet material conveying mechanism of the present invention;

[0017] Figure 3 It is a rear view of the sheet material conveying mechanism of the present invention;

[0018] Figure 4 A view of the connecting rod mechanism of the present invention;

[0019] Figure 5 It is a schematic diagram of the working process of the sheet material conveying mechanism of the present invention;

[0020] Figure 6 It is a mechanical principle diagram of the sheet material conveying mechanism of the present invention.

[0021] Among them, 1. base, 11. fixed shaft, 12. negative pressure interface, 13. negative pressure bin, 2. rotating assembly, 21. rotating bearing seat, 22. rotating disk, 23. swing arm fixed seat, 24. main drive wheel, 25. suction rotating disk, 26. first suction pipe joint, 3. suction cup assembly, 31. suction cup, 32. suction cup fixed seat, 33. second suction pipe joint, 34. guide rail roller, 35. first connecting rod fixed seat, 36. hose, 4. connecting rod Mechanism, 41, rocker arm, 42, first connecting rod, 43, second connecting rod, 44, sliding guide rail, 45, connecting shaft, 46, cam roller, 5, cam plate, 110, circular guide rail, 120, first rotating plate, 130, cam fixed plate, 210, rocker arm assembly, 220, first connecting rod member, 230, sliding guide rail, 240, second connecting rod member, 310, material adsorption plate, 410, first slider assembly, 420, second slider assembly. DETAILED DESCRIPTION

[0022] like Figures 1 to 4A sheet material conveying mechanism includes a base 1, a fixed shaft 11 is fixed on the base 1, a cam plate 5 is fixed on one end of the fixed shaft 11, a rotating assembly 2 is connected to the other end of the fixed shaft 11, the rotating assembly 2 includes a rotating bearing seat 21 rotatably connected to the fixed shaft 11, a rotating disk 22 is fixed or integrally formed on the rotating bearing seat 21, a suction cup assembly 3 is installed on the outer edge of the rotating disk 22, the suction cup assembly 3 includes a suction cup fixing seat 32 sliding along the flange of the rotating disk 22, a suction cup 31 is fixed or integrally formed on the suction cup fixing seat 32, and a second suction pipe joint 33 is connected to the suction cup 31,

[0023] A sliding guide rail 44 is axially provided on the rotating disk 22, and a cam groove is provided on the cam disk 5. The overall shape of the cam groove is a cam shape. A connecting shaft 45 is installed between the rotating disk 22 and the cam disk 5. One end of the connecting shaft 45 slides in the cam groove, and the other end of the connecting shaft 45 slides along the sliding guide rail 44. A connecting rod mechanism 4 is provided between the rotating component 2 and the cam disk 5. The connecting rod mechanism 4 includes a rocker rod 41, a first connecting rod 42 and a second connecting rod 43. A rocker rod fixing seat 23 is fixed on the rotating disk 22, and a first connecting rod fixing seat 35 is fixed on the suction cup fixing seat 32. One end of the first connecting rod 42 is rotatably connected to the first connecting rod fixing seat 35, and the other end of the first connecting rod 42 is rotatably connected to one end of the rocker rod 41. The other end of the rocker rod 41 is rotatably connected to the rocker rod fixing seat 23, one end of the second connecting rod 43 is hinged on the rocker rod 41, and the other end of the second connecting rod 43 is rotatably connected to the connecting shaft 45.

[0024] A main transmission wheel 24 is also fixed on the rotating bearing seat 21 to drive the rotating bearing seat 21 to rotate. The main transmission wheel 24 is a gear or a pulley.

[0025] A cam roller 46 is mounted on the connecting shaft 45 for sliding in the cam groove.

[0026] The suction cup 31 has several suction holes communicated with the second suction pipe 33, a negative pressure bin 13 is fixed on the base 1, the negative pressure bin 13 is connected to several negative pressure intervals, a negative pressure interface 12 is provided on the negative pressure interval, a suction rotating disk 25 is provided outside the negative pressure bin 13, the suction rotating disk 25 rotates synchronously with the rotating component 2, the first suction pipe joints 26 are evenly distributed circumferentially on the suction rotating disk 25, the number of the second suction pipe joints 33 is the same as the number of the first suction pipe joints 26, and a hose 36 is connected between the first suction pipe joint 26 and the second suction pipe joint 33.

[0027] A guide roller 34 matching the flange of the rotating disk 22 is provided on the suction cup fixing seat 32. The guide roller 34 includes an upper roller and a lower roller. The flange of the rotating disk 22 is stuck between the upper roller and the lower roller.

[0028] The suction cup assembly 3 is a long box structure with a suction cup 31 at the top of the box. The suction surface of the suction cup is a suction arc surface with many suction holes processed on it. Each suction cup 31 can absorb one or more sheets of sheet materials for transfer at one time. The suction cup assembly 3 is installed on the flange of the rotating disk 22 through four sets of guide rollers 34 on the suction cup fixing seat 32.

[0029] The cam groove curve of the cam disc 5 is a plurality of groups of arc curves and straight line segments smoothly spliced ​​together. According to the different expansion distances required for the sheet material, the cam disc 5 with different curves needs to be replaced.

[0030] like Figure 6 , which is a mechanical principle diagram, in which the circular guide rail 110 and the first rotating disk 120 correspond to the rotating disk 22, the cam fixed disk 130 corresponds to the cam disk 5, the rocker assembly 210 corresponds to the rocker 41, the first connecting rod 220 corresponds to the first connecting rod 42, the sliding guide rail 230 corresponds to the sliding guide rail 44, the second connecting rod 240 corresponds to the second connecting rod 43, the material adsorption disk 310 corresponds to the suction cup assembly 3, the first slider assembly 410 corresponds to the guide roller 34 and the flange of the rotating disk 22, the second slider assembly 420 corresponds to the sliding slider on the sliding guide rail 44, and the cam roller 46 fixed at the end of the connecting shaft 45 slides on the cam disk 5.

[0031] Working principle:

[0032] like Figure 5-6 The variable pitch principle of the present invention is that when the distance is expanded, the single object to be expanded enters the variable pitch mechanism from point A through other conveyors, and is attached to each material adsorption disk 310, with an angle of α° between them. The variable pitch mechanism rotates around point O at an angular velocity ω, and the material adsorption disk 310 brings the single object to point B. At this time, the distance between the single objects is pulled apart, and the angle between them becomes β°, where β>α. The single object with the distance pulled apart leaves the variable pitch mechanism at point B and is transported to the next workstation through other conveying mechanisms.

[0033] When the variable distance principle of the present invention is to reduce the distance, the single object to be reduced enters the variable distance mechanism from point B through other conveying, and is attached to each material adsorption disk 310, and the angle between them is β°. The variable distance mechanism rotates around point O at an angular velocity ω, and the material adsorption disk 310 brings the single object to point A. At this time, the distance between the single objects is reduced, and the angle between them becomes α°, where β>α. The single object with the distance pulled away separates from the variable distance mechanism at point A and is transported to the next workstation through other conveying mechanisms.

[0034] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A sheet material conveying mechanism, characterized in that : comprising a base (1), a fixed shaft (11) being fixed on the base (1), a cam plate (5) being fixed on one end of the fixed shaft (11), a rotating assembly (2) being connected to the other end of the fixed shaft (11), the rotating assembly (2) comprising a rotating bearing seat (21) being rotatably connected to the fixed shaft (11), a rotating disk (22) being fixed or integrally formed on the rotating bearing seat (21), a suction cup assembly (3) being mounted on the outer edge of the rotating disk (22), the suction cup assembly (3) comprising a suction cup fixing seat (32) sliding along the flange of the rotating disk (22), a suction cup (31) being fixed or integrally formed on the suction cup fixing seat (32), and a second suction pipe joint (33) being connected to the suction cup (31), The rotating disk (22) is provided with a sliding guide rail (44) along the axial direction, the cam disk (5) is provided with a cam groove, a connecting shaft (45) is installed between the rotating disk (22) and the cam disk (5), one end of the connecting shaft (45) slides in the cam groove, and the other end of the connecting shaft (45) slides along the sliding guide rail (44), a connecting rod mechanism (4) is provided between the rotating assembly (2) and the cam disk (5), the connecting rod mechanism (4) includes a rocker rod (41), a first connecting rod (42) and a second connecting rod (43), and the rotating assembly (22) and the cam disk (5) are provided with a rocker rod (41), a first connecting rod (42) and a second connecting rod (43). A swing rod fixing seat (23) is fixed on the rotating disk (22), a first connecting rod fixing seat (35) is fixed on the suction cup fixing seat (32), one end of the first connecting rod (42) is rotatably connected to the first connecting rod fixing seat (35), the other end of the first connecting rod (42) is rotatably connected to one end of the swing rod (41), the other end of the swing rod (41) is rotatably connected to the swing rod fixing seat (23), one end of the second connecting rod (43) is hinged on the swing rod (41), and the other end of the second connecting rod (43) is rotatably connected to the connecting shaft (45).

2. A sheet material conveying mechanism according to claim 1, characterized in that: A main transmission wheel (24) is also fixed on the rotating bearing seat (21) to drive the rotating bearing seat (21), and the main transmission wheel (24) is a gear or a belt pulley.

3. A sheet material conveying mechanism according to claim 1, characterized in that: The connecting shaft (45) is provided with a cam roller (46) for sliding in the cam groove.

4. A sheet material conveying mechanism according to claim 1, characterized in that: The suction cup (31) has a plurality of suction holes communicated with the second suction pipe joint (33); a negative pressure bin (13) is fixed on the base (1); the negative pressure bin (13) is connected to a plurality of negative pressure intervals; a negative pressure interface (12) is provided on the negative pressure interval; a suction rotating disk (25) is provided outside the negative pressure bin (13); the suction rotating disk (25) rotates synchronously with the rotating assembly (2); first suction pipe joints (26) are evenly distributed circumferentially on the suction rotating disk (25); the number of the second suction pipe joints (33) is the same as the number of the first suction pipe joints (26); and a hose (36) is connected between the first suction pipe joint (26) and the second suction pipe joint (33).

5. A sheet material conveying mechanism according to claim 1, characterized in that: A guide roller (34) matching the flange of the rotating disk (22) is arranged on the suction cup fixing seat (32). The guide roller (34) comprises an upper roller and a lower roller. The flange of the rotating disk (22) is clamped between the upper roller and the lower roller.

6. A sheet material conveying mechanism according to claim 5, characterized in that: The suction cup assembly (3) is a long box structure, the top of the box is the suction cup (31), the suction surface of the suction cup (31) is a suction arc surface, and many suction holes are processed on the suction arc surface. Each suction cup (31) can absorb one or more sheets of sheet materials at one time for transfer. The suction cup assembly (3) is installed on the flange of the rotating disk (22) through four groups of guide rollers (34) on the suction cup fixing seat (32).

7. A sheet material conveying mechanism according to claim 1, characterized in that: The cam groove curve of the cam plate (5) is a plurality of groups of arc curves and straight line segments smoothly spliced ​​together. According to the different expansion distances required for the sheet material, the cam plate (5) with different curves needs to be replaced.

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