Folding device for napkins

Abstract

The utility model provides a folding device for napkins, which belongs to the technical field of tissue folding and comprises two baffles, a group of folding rollers and a group of rotating shafts, the group of folding rollers and the group of rotating shafts are arranged between the two baffles, and the group of rotating shafts are located at the bottom of the group of folding rollers and provided with a plurality of shifting forks. Roller grooves for avoiding the shifting forks are formed in the set of folding rollers, extending mechanisms are arranged in the shifting forks, the extending mechanisms comprise storage cavities formed in the ends of the shifting forks, driving assemblies are arranged in the storage cavities, smoothing rollers are arranged at the side ends of the storage cavities, and the smoothing rollers are connected with the driving assemblies; the flattening roller can be recycled into the shifting fork, so that paper materials can be flattened again, and wrinkles of the paper materials in the folding process can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of paper towel folding, in particular to a folding device for napkins. Background Art

[0002] A paper towel folding machine is a device used for folding paper towels or facial tissues. It is usually used in the production lines of products such as paper towels, toilet paper, and facial tissues. It can automatically fold large sheets of paper into small pieces of the required size for packaging and use. It is widely used in the production and packaging industries of toilet paper, which can improve production efficiency and product quality.

[0003] The existing paper material passes through the gap between the left folding roller and the right folding roller from top to bottom. After the suction nozzle on the left folding roller adsorbs and drives the lower end of the paper material to move along the circumference of the left folding roller for a certain length, the suction nozzle on the left folding roller withdraws the negative pressure and actively releases the paper material. At the same time, the left fork swings outward from the inside of the left folding roller to deflect the paper material away from the left folding roller. Since the left supporting finger and the right supporting finger support the falling paper material, the left fork deflects the paper material and presses it against the left supporting finger. At the same time, the suction nozzle on the right folding roller attracts the paper material through negative pressure, causing the paper material to swing to the right and transfer to lean against the right folding roller. Subsequently, the lower end of the paper material is folded at the intersection of the left fork and the left supporting finger. Then the left fork moves back to its original position, and the paper material is driven by the right folding roller to move along the circumference of the right folding roller for a certain length. Then the right fork folds the paper material towards the right supporting finger. In this way, the paper material will be folded into a paper block in a circuitous manner.

[0004] Although the above device can fold the paper material, during the folding process, the left fork presses one side of the paper material, and then the right fork presses the other side of the paper material. As a result, the contact area between the left fork and the right fork and the paper material is small, leading to the current situation that the paper material has wrinkles during the folding process. Content of the Utility Model

[0005] In view of this, the utility model provides a folding device for napkins. The utility model can retract the fork into the flattening roller, so that the paper material can be flattened again, thereby reducing the occurrence of wrinkles in the paper material during the folding process.

[0006] To solve the above technical problems, the present utility model provides a folding device for napkins, which includes two baffles, and a set of folding rollers and a set of rotating shafts are arranged between the two baffles. The set of rotating shafts is located at the bottom of the set of folding rollers. It is characterized in that: a number of fork-shaped levers are arranged on the set of rotating shafts, and roller grooves for avoiding the fork-shaped levers are formed on the set of folding rollers. Extension mechanisms are arranged inside the fork-shaped levers. The extension mechanism includes a storage cavity arranged at the end of the fork-shaped lever, a driving component is arranged in the storage cavity, a smoothing roller is arranged at the side end of the storage cavity, and the smoothing roller is connected to the driving component; that is, through the operation of the folding rollers, the paper material can be conveyed, and then through the use of the fork-shaped levers, the paper material can be shifted. Then, through the operation of the driving component, the smoothing roller extends out of the fork-shaped lever, so as to smooth the paper material during the folding process. Then, the driving component operates again, so that the smoothing roller can be retracted into the fork-shaped lever, so as to smooth the paper material again, thereby reducing the occurrence of wrinkles in the paper material during the folding process.

[0007] The driving component includes two sliding grooves arranged in the storage cavity. A rack plate and a sliding block are respectively arranged in the sliding grooves. Moving blocks are arranged at the side ends of the rack plate and the sliding block, and a smoothing roller is installed between the moving blocks. A transmission member is arranged in the storage cavity, and the transmission member is arranged in cooperation with the rack plate; that is, the rack plate provides a stable guiding function for the moving blocks.

[0008] The transmission member includes a mini motor arranged at the bottom of the storage cavity. A first gear is fixedly arranged on the output shaft of the mini motor, and the first gear is meshed with the rack plate; that is, it provides a transmission function for the rack plate.

[0009] The fork-shaped lever is fixedly installed on the arc surface of the rotating shaft through bolts on the fixing piece; that is, it is convenient to maintain the fork-shaped lever.

[0010] Two second gears are arranged on one side of the two baffles. The two second gears are fixedly arranged on one side of the set of folding rollers, and the two second gears are meshed. An installation seat is arranged at the side end of the baffle, and a servo motor is arranged on the installation seat. The output shaft of the servo motor is fixedly arranged on one side of the second gear; that is, the servo motor provides driving force for the second gear, so that the second gears mesh and rotate with each other.

[0011] Two driving motors are arranged at the side ends of the two baffles. The output shafts of the two driving motors are fixedly arranged on the rotating shafts; that is, the two driving motors respectively control the rotation of the rotating shafts, so as to realize the staggered folding of the fork-shaped levers on the rotating shafts.

[0012] Installation blocks are arranged at the side ends of the baffles, and installation holes are arranged on the installation blocks; that is, it is convenient to install the bottom discharge port of the paper folding machine.

[0013] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0014] 1. Subsequently, the paper material adsorbed by the folding roller is pushed to the folding position through the smoothing roller in the fork, and then, through the operation of the mini motor, the first gear can be driven to rotate. The first gear is in transmission with the rack plate, so that the rack plate drives the smoothing roller between the moving blocks to move, so as to smooth the folded paper material. Then, through the operation of the mini motor again, the smoothing roller is retracted into the fork, indirectly smoothing the paper material and indirectly reducing the wrinkles generated when the paper material is folded.

[0015] 2. The fork is fixedly installed on the arc surface of the rotating shaft through the bolt on the fixing piece, which is convenient for personnel to remove and maintain the fork. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of a folding device for a paper napkin according to the present utility model;

[0017] Figure 2 FIG. is a schematic structural diagram of the fork according to the present utility model;

[0018] Figure 3 FIG. is a schematic cross-sectional structural diagram of the fork according to the present utility model;

[0019] Figure 4 For the present utility model Figure 3 FIG. is a schematic structural diagram of the enlarged view at A in;

[0020] Figure 5 FIG. is a schematic side view structural diagram of the baffle according to the present utility model.

[0021] DESCRIPTION OF THE REFERENCE NUMERALS:

[0022] 100, baffle; 101, mounting seat; 102, servo motor; 103, folding roller; 104, roller groove; 105, fork; 106, rotating shaft; 107, driving motor; 108, mounting block; 109, mounting hole; 110, fixing piece; 111, bolt; 112, second gear;

[0023] 200, driving assembly; 201, chute; 202, moving block; 203, smoothing roller; 204, rack plate; 205, sliding block;

[0024] 300, transmission member; 301, mini motor; 302, first gear; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will combine the attached drawings of the embodiments of the present utility model Figures 1-5, the technical solutions of the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0026] As Figures 1-5 shown: This embodiment provides a folding device for paper napkins, including two baffles 100 and a set of folding rollers 103 and a set of rotating shafts 106 arranged between the two baffles 100. The baffles 100 are used to fix and guide the traveling path of the paper napkin in the device. The folding rollers 103 perform the folding action of the paper napkin. A set of rotating shafts 106 are located at the bottom of a set of folding rollers 103. It is characterized in that: a number of fork-shaped members 105 are arranged on a set of rotating shafts 106, and roller grooves 104 for avoiding the fork-shaped members 105 are formed on a set of folding rollers 103. The fork-shaped members 105 enter the folding rollers 103, so as to be used for picking up and pressing the paper on the folding rollers 103. Extension mechanisms are uniformly arranged on the fork-shaped members 105. The extension mechanism includes a storage cavity arranged at the end of the fork-shaped member 105. A driving assembly 200 is arranged in the storage cavity. A smoothing roller 203 is arranged at the side end of the storage cavity. The smoothing roller 203 is connected to the driving assembly 200. The smoothing roller 203 can rotate. When the fork-shaped member 105 enters the roller groove 104 of the folding roller 103, the paper material is picked up by the bottom of the smoothing roller 203. Then, through the operation of the driving assembly 200, the smoothing roller 203 can be extended, so that the paper material during the folding process can be smoothed. Then, the driving assembly 200 operates again to contract the smoothing roller 203, so that the paper material is smoothed for the second time, thereby reducing the situation that the paper material wrinkles during the folding process;

[0027] The driving assembly 200 Figure 3 The enlarged view at position A in Figure 4 is shown as

[0028] The driving assembly 200 includes two sliding grooves 201 arranged in the storage cavity. A rack plate 204 and a sliding block 205 are respectively arranged in the sliding grooves 201. The rack plate 204 and the sliding block 205 can slide in the sliding grooves 201. Moving blocks 202 are arranged at the side ends of the rack plate 204 and the sliding block 205. The moving blocks 202 are fixed at the side ends of the sliding block 205 and the rack plate 204. A smoothing roller 203 is installed between them. The smoothing roller 203 can rotate thereon. A transmission member 300 is arranged in the storage cavity. The transmission member 300 is arranged in cooperation with the rack plate 204;

[0029] The transmission member 300 includes a mini motor 301 disposed at the bottom of the storage cavity. The mini motor 301 is fixed within the storage cavity. A first gear 302 is fixedly provided on the output shaft of the mini motor 301. The first gear 302 is fixedly arranged with the output shaft of the mini motor 301, and the first gear 302 is meshed with the rack plate 204.

[0030] By the operation of the mini motor 301, the first gear 302 can be driven to rotate. The first gear 302 and the rack plate 204 are in transmission, so that the rack plate 204 drives the flattening roller 203 between the moving blocks 202 to move, and then the paper material can be flattened.

[0031] The fixing piece 110 is as Figure 2 shown.

[0032] The fork 105 is fixedly installed on the arc surface of the rotating shaft 106 through the bolt 111 on the fixing piece 110, so as to facilitate the disassembly of the fork 105.

[0033] The baffle 100 is as Figure 5 shown.

[0034] On one side of the two baffles 100, there are two second gears 112. The two second gears 112 are fixedly arranged on one side of a set of folding rollers 103. The two second gears 112 are meshed. On the side end of the baffle 100, there is a mounting seat 101. The mounting seat 101 is fixed on the baffle 100 by welding. A servo motor 102 is arranged on the mounting seat 101. The servo motor 102 is fixed on the mounting seat 101 by bolts 111. The output shaft of the servo motor 102 is fixedly arranged on one side of the second gear 112. That is, the servo motor 102 provides driving force for the second gear 112, so that the second gears 112 mesh and rotate with each other.

[0035] On the side ends of the two baffles 100, there are two driving motors 107. The output shafts of the two driving motors 107 are fixedly arranged on the rotating shaft 106. The two driving motors 107 respectively control the rotating shaft 106, so as to realize the staggered folding of the fork 105 on the rotating shaft 106.

[0036] The mounting block 108 is as Figure 1 shown.

[0037] Mounting blocks 108 are arranged on the side ends of the baffle 100. Mounting holes 109 are provided on the mounting blocks 108. The mounting blocks 108 are fixed on the baffle 100 by welding. Then, by inserting bolts 111 into the mounting holes 109, the baffle 100 is connected to the paper stacking and discharging port of the paper stacking machine.

[0038] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] The above is the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle described in the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A folding device for napkins, comprising two baffles (100) and a group of folding rollers (103) and a group of rotating shafts (106) arranged between the two baffles (100), wherein the group of rotating shafts (106) is located at the bottom of the group of folding rollers (103), characterized in that: A plurality of shift forks (105) are arranged on a group of the rotating shafts (106); a roller groove (104) for avoiding the shift forks (105) is formed on a group of the folding rollers (103); an extension mechanism is arranged on the shift forks (105); the extension mechanism comprises a storage cavity arranged at the end of the shift fork (105); a driving component (200) is arranged in the storage cavity; a smoothing roller (203) is arranged at the side end of the storage cavity; and the smoothing roller (203) is connected to the driving component (200).

2. A folding device for napkins as claimed in claim 1, characterized in that: The driving assembly (200) comprises two slide grooves (201) arranged in the storage cavity, wherein a rack plate (204) and a slide block (205) are respectively arranged in the slide grooves (201), and moving blocks (202) are arranged at the side ends of the rack plate (204) and the slide block (205), and a smoothing roller (203) is installed between the moving blocks (202). A transmission member (300) is arranged in the storage cavity, and the transmission member (300) is arranged in cooperation with the rack plate (204).

3. A folding device for napkins as claimed in claim 2, characterized in that: The transmission member (300) comprises a mini motor (301) arranged at the bottom of the storage chamber, and a gear 1 (302) is fixedly arranged on the output shaft of the mini motor (301), and the gear 1 (302) is meshed with the rack plate (204).

4. A folding device for napkins as claimed in claim 3, characterized in that: The shift fork (105) is fixedly mounted on the arc surface of the rotating shaft (106) via bolts (111) on the fixing plate (110).

5. A folding device for napkins as claimed in claim 1, characterized in that: Two gears (112) are arranged on one side of the two baffles (100), the two gears (112) are fixedly arranged on one side of a group of folding rollers (103), the two gears (112) are meshed, a mounting seat (101) is arranged on the side end of the baffle (100), a servo motor (102) is arranged on the mounting seat (101), and the output shaft of the servo motor (102) is fixedly arranged on one side of the gear (112).

6. A folding device for napkins as claimed in claim 5, characterized in that: Two drive motors (107) are arranged at the side ends of the two baffles (100), and the output shafts of the two drive motors (107) are fixedly arranged on the rotating shaft (106).

7. A folding device for napkins as claimed in claim 1, characterized in that: The side ends of the baffles (100) are each provided with a mounting block (108), and the mounting block (108) is provided with a mounting hole (109).

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