Sheet packaging production device and production process thereof

Abstract

The invention belongs to the technical field of packaging, and discloses a sheet packaging production device which comprises two sets of transfer assemblies arranged symmetrically, each set of transfer assembly comprises a front transfer unit, a distance reducing transfer unit and a rear transfer unit, and the distance reducing transfer unit can receive sheets on the front transfer unit and can receive the sheets on the rear transfer unit; the two distance-reducing transfer devices enable the distance between the projections of the two corresponding sheets in the direction perpendicular to the conveying direction to be unchanged or changed, then the sheets are transferred to the corresponding rear transfer units, the rear transfer units of the two sets of transfer assemblies are oppositely arranged, and a conveying channel is formed in the gap between the rear transfer units. The two sets of transferring assemblies can overlap two sheets at different initial positions, then a one-bag two-sheet package is formed, offline semi-automatic packaging is not needed, full-automatic production can be achieved, and the production efficiency is high. And meanwhile, the function switching of one-piece packaging and two-piece packaging can be considered.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging, and in particular relates to a production device and a production process for sheet packaging. Background Art

[0002] Many disposable sanitary products require product packaging devices. In order to meet these requirements, manufacturers use special devices to package products. In the existing technology, most product packaging adopts one-piece continuous production packaging. Although the product can achieve the purpose of packaging, its packaging characteristics have defects. Its shortcomings are: First, in response to the use of different countries and regions, the packaging function of the equipment is single and cannot meet the customer's one-pack two-piece functional production; second, if the customer needs to use two-piece packaging, it needs to use semi-automatic packaging offline, which is inefficient.

[0003] Therefore, a new product packaging device is needed, which can not only achieve the purpose of two-piece continuous packaging, but also, more importantly, can take into account the fully automatic production of one-piece and two-piece function switching. Summary of the invention

[0004] In order to solve the defect that the existing packaging device in the prior art cannot meet the production function of one-pack two-piece packaging, the present invention provides a sheet packaging production device and a production process thereof.

[0005] The technical solution adopted by the present invention is: a production device for sheet packaging, including two symmetrically arranged groups of transfer components, each group of the transfer components includes a front transfer unit, a retracted transfer unit and a rear transfer unit, the retracted transfer unit can receive the sheets on the front transfer unit, and the two retracted transfer devices transfer the corresponding two sheets to the corresponding rear transfer unit after the distance between the projections in the direction perpendicular to the conveying direction remains unchanged or changes, and the rear transfer units of the two groups of the transfer components are arranged relatively to each other, and the gap between them forms a conveying channel.

[0006] In some embodiments, the front transfer unit includes a first vacuum suction roller.

[0007] In some embodiments, the two first vacuum adsorption rollers are disposed opposite to each other, and a gap therebetween forms an input channel for the sheet.

[0008] In some embodiments, the vacuum adsorption holes on the two first vacuum adsorption rollers are staggered.

[0009] In some embodiments, the shortened distance transfer unit includes a plurality of suction cups rotating around a common axis, and each of the suction cups can accelerate or decelerate movement around the axis when driven by its independent power mechanism.

[0010] In some embodiments, the rear transfer unit includes a second vacuum adsorption roller, a conveyor belt and a guide roller. The conveyor belt is provided with a through hole. The vacuum adsorption roller and the guide roller are respectively arranged at both ends of the conveyor belt. The gap between the two groups of conveyor belts of the rear transfer unit forms the conveying channel.

[0011] In some embodiments, the two groups of transfer components are distributed vertically, with one group of transfer components being located above the other group of transfer components.

[0012] In some embodiments, it also includes a packaging material input mechanism, a folding mechanism, a sealing mechanism and a cutting mechanism which are sequentially arranged at the rear end of the rear transfer unit.

[0013] The present invention also provides a production process for sheet packaging, in which the sheets are arranged at intervals on a conveyor line, two front transfer units receive two adjacent sheets on the conveyor line in turn, two shortening transfer units receive the sheets on the corresponding front transfer units, and transfer the corresponding two sheets to the corresponding rear transfer units after the distance between the projections of the two sheets in the direction perpendicular to the conveying direction remains unchanged or is changed, and the two sheets are rearranged in the conveying channel.

[0014] In some embodiments, the method further includes the steps of folding, bagging, sealing and cutting the two overlapping sheets.

[0015] Beneficial effect: The two groups of transfer components provided in the present invention can rearrange two sheets with different initial positions so that the two overlap to form a two-piece package. There is no need for offline semi-automatic packaging, and full-automatic production can be achieved with high production efficiency. The distance between the sheets can also be maintained, reduced or increased and then rearranged to form a one-piece package, which can take into account the functional switching of one-piece and two-piece packages. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 Schematic diagram of the position change state between two-piece packaging sheets;

[0018] Figure 3 It is a schematic diagram of the position change state between one-piece packaging sheets;

[0019] In the figure, 100. sheet material, 201. front transfer unit, 202. retracted transfer unit, 203. rear transfer unit, 204. suction cup, 205. conveyor belt, 206. guide roller, 300. folding mechanism, 400. sealing mechanism, 500. cutting mechanism, 600. conveying mechanism, 700. packaging material, 1000. state of sheet material on the conveyor line and front transfer unit, 2000. state of sheet material on the retracted transfer unit, 3000. state of sheet material on the rear transfer unit, 4000. state of sheet material after being folded into bags, 5000. state of sheet material after being sealed, 6000. state of sheet material after being wrapped and cut. DETAILED DESCRIPTION

[0020] The present application will be further described below in conjunction with specific implementation methods. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative changes belong to the protection scope of the present application.

[0021] like Figure 1 As shown, a production device for packaging sheet materials 100 provided by the present invention comprises two symmetrically arranged groups of transfer components, each group of the transfer components comprises a front transfer unit 201, a retracting transfer unit 202 and a rear transfer unit 203, the retracting transfer unit 202 can receive the sheet materials 100 on the front transfer unit 201, and the two retracting transfer devices transfer the corresponding two sheets 100 to the corresponding rear transfer units 203 after the distance between their projections in the direction perpendicular to the conveying direction remains unchanged or changes, and the rear transfer units 203 of the two groups of the transfer components are arranged relatively to each other, and the gap between them forms a conveying channel.

[0022] like Figures 1 to 3 As shown, during production, the process is to arrange the sheets 100 at intervals on the conveyor line, two front transfer units 201 receive two adjacent sheets 100 on the conveyor line in turn, two retracting transfer units 202 receive the sheets 100 on the corresponding front transfer units 201, and transfer the corresponding two sheets 100 to the corresponding rear transfer units 203 after the distance between the projections in the vertical direction of the conveying direction remains unchanged or changes, and the two sheets 100 are rearranged in the conveying channel to form a two-piece or one-piece package. The present invention is particularly suitable for two-piece packaging of disposable sanitary products, and is also compatible with one-piece packaging.

[0023] When two adjacent sheets 100 overlap in the conveying channel, that is, the distance shifting unit 202 makes the projections of the two sheets 100 in the direction perpendicular to the conveying direction overlap, the two sheets 100 can be packaged in the form of overlapping, that is, two-piece packaging; when two adjacent sheets 100 do not overlap in the conveying channel (that is, the distance between the initial positions of the two sheets 100 on the conveying line remains unchanged, is reduced (non-overlapping) or increases), one-piece packaging can be achieved. This device is compatible with one-piece packaging or two-piece packaging, and the switching between the two modes can be achieved by adjusting the process parameters according to actual needs.

[0024] In some embodiments, the front transfer unit 201 includes a first vacuum adsorption roller, which can adsorb the sheet 100 by the principle of vacuum adsorption while rotating, and transfer the sheet 100 on the conveying line accordingly.

[0025] Specifically, in order to facilitate the conveying and transfer of the sheet 100, in one embodiment, the two first vacuum adsorption rollers are arranged opposite to each other, and the gap between the two forms an input channel for the sheet 100. Preferably, the vacuum adsorption holes on the two first vacuum adsorption rollers are staggered. The sheets 100 are arranged in sequence and transferred from the conveying line to the conveying channel, and can be adsorbed and transferred by the first vacuum adsorption rollers. The vacuum adsorption holes on the two first vacuum adsorption rollers are staggered, which can achieve the function that one of the sheets 100 arranged in sequence and in sequence is adsorbed by one of the first vacuum adsorption rollers, and the next sheet 100 is adsorbed by the other first vacuum adsorption roller, thereby avoiding the mismatch in the number of sheets 100 transferred by the two first vacuum adsorption rollers.

[0026] In some embodiments, the retractable transfer unit 202 includes a plurality of suction cups 204 that rotate around a common axis, and each of the suction cups 204 can accelerate or decelerate around the axis when driven by its independent power mechanism. Each suction cup 204 has an independent power mechanism, and the suction cup 204 can accelerate and decelerate around the axis under the action of its independent power mechanism, and is used to receive the sheet 100 transported from the corresponding front transfer unit 201 and transport it to the rear transfer unit 203. In this process, since there is a distance difference between the sheets 100 received by the front transfer units 201 of the two groups of transfer components, that is, after one of the front transfer units 201 receives the sheet 100 and transfers it for a certain distance, the other front transfer unit 201 receives the next sheet 100, resulting in a distance difference between the sheets 100 received by the retractable transfer units 202 of the two groups of transfer components, that is, after one of the retractable transfer units 202 receives and transfers the sheet 100 for a certain distance, the other retractable transfer unit 202 receives the sheet 100 of the corresponding front transfer unit 203. 201, and the suction cup 204 can move in a circle along the axis under the drive of its independent power mechanism, so that the corresponding suction cup 204 on the retracting and shifting unit 202 that receives the sheet 100 can first accelerate and then decelerate in the process of moving from the front transfer unit 201 to the rear transfer unit 203, thereby changing or eliminating the distance difference between the corresponding sheets 100 on the two retracting and shifting units 202, that is, the projections of the corresponding two sheets 100 in the direction perpendicular to the conveying direction overlap or the distance changes. At the same time, the linear speed of the suction cup 204 is kept consistent with the linear speed of the rear transfer unit 203 when the sheet 100 is transferred to the rear transfer unit 203, so as to achieve smooth docking, and the distance difference between the corresponding sheets 100 received by the rear transfer units 203 of the two groups of transfer components is changed or eliminated, so that the sheets 100 can be rearranged in the conveying channel (the two sheets 100 overlap or the distance between the two sheets 100 changes or remains unchanged). When switching between the one-piece packaging mode and the two-piece packaging mode, it is only necessary to adjust the acceleration and deceleration parameters of the suction cup 204 so that the corresponding two sheets 100 maintain a certain distance difference or overlap when reaching the rear transfer unit 203 .

[0027] The specific distance reduction and shifting unit 202 can adopt the sheet material conveying mechanism 600 disclosed in the prior art CN106115343A, install the secondary ring concentrically on the turntable, and install multiple linear motor primaries synchronously on the circumference of the secondary ring. The suction cup 204 is installed on the linear motor primary, and the linear motor is used as the power mechanism of the suction cup 204. When the size of the sheet 100 or the spacing of the arrangement changes, the program can be changed. The device for changing the spacing between conveyed items disclosed in CN101277884B can also be used. Each suction cup 204 is driven by an independent power shaft, wherein the power shaft is a hollow shaft, and the hollow shafts corresponding to the multiple suction cups 204 are set together through bearing sleeves. By controlling the rotation speed of the power shaft, the acceleration and deceleration movement of the corresponding suction cup 204 can be realized. The prior arts cited above are all specific implementation forms of the existing distance reduction and shifting unit 202, and the present invention is not limited thereto.

[0028] In some embodiments, the rear transfer unit 203 includes a second vacuum adsorption roller, a conveyor belt 205 and a guide roller 206. The conveyor belt 205 is provided with through holes. The vacuum adsorption roller and the guide roller 206 are respectively provided at both ends of the conveyor belt 205. The gap between the two groups of conveyor belts 205 of the rear transfer unit 203 forms the conveying channel. When the through holes on the conveyor belt 205 are aligned with the vacuum adsorption holes on the second vacuum adsorption roller, suction is generated to receive the sheet 100 transferred from the distance-shrinking transfer unit 202. The sheet 100 automatically enters the conveying channel at the position where the conveyor belt 205 is separated from the second vacuum adsorption roller. The positions of the two sheets 100 overlap in the conveying channel and are in an overlapping state, that is, a two-piece package. The two rear transfer units 203 adopt the form of a second vacuum adsorption roller and a conveyor belt 205, which can not only receive the sheets 100 transferred by the shortening transfer unit 202, but also prevent the sheets 100 that are overlapped or rearranged in the conveying channel from separation or relative displacement due to the restriction of the two conveyor belts 205.

[0029] In one embodiment, in order to save equipment floor space, the two groups of transfer components are arranged up and down, with one group of transfer components located above the other group of transfer components. Of course, the present invention is not limited thereto, and the two groups of transfer components can also be arranged horizontally at the same height to reduce the overall height of the equipment.

[0030] In some embodiments, the packaging material 700 conveying mechanism 600, the folding mechanism 300, the sealing mechanism 400 and the cutting mechanism 500 are sequentially arranged at the rear end of the rear transfer unit 203. The packaging material 700 is inputted at one side of the folding mechanism 300, and the sheets 100 which are overlapped or rearranged in the conveying passage sequentially pass through the folding mechanism 300 to be folded and then enter the packaging material 700, and then pass through the sealing mechanism 400 for sealing, and finally pass through the cutting mechanism 500 for cutting to form an independent packaging structure of two sheets 100 or a packaging structure of one sheet 100.

[0031] In order to facilitate the transmission, a conveying mechanism 600 is provided between the rear transfer unit 203 and the wrapping and folding mechanism 300 , between the wrapping mechanism 400 and the wrapping and cutting mechanism 500 , and at the rear end of the wrapping and cutting mechanism 500 .

[0032] The above device is applied to two-piece packaging, wherein the position of the sheets 100 varies as follows: Figure 2 As shown, the sheet state 1000 on the conveyor line and the front transfer unit is arranged at intervals, the sheet state 2000 on the shortening transfer unit is that the distance between the two sheets 100 gradually decreases until they overlap, the sheet state 3000 on the rear transfer unit is an overlapping state, the sheet state 4000 after being wrapped and folded into a bag is that two overlapping sheets 100 are loaded into the packaging material 700, the sheet state 5000 after sealing is a state in which the front and rear overlapping sheet 100 units are separately wrapped, and the sheet state 6000 after wrapping and cutting is a state in which two overlapping sheets 100 are independently packaged in one package.

[0033] The above device is applied to a one-piece packaging, and the position change between the sheets 100 is as follows: Figure 3 As shown, the sheet state 1000 on the conveyor line and the front transfer unit is arranged at intervals, the sheet state 2000 on the shortened transfer unit is that the distance between the two sheets 100 is reduced, increased or unchanged, but not overlapped, the sheet state 3000 on the rear transfer unit is also in a non-overlapping, interval-arranged state, the sheet state 4000 after being wrapped and folded into a bag is that the sheets 100 arranged at intervals are loaded into the packaging material 700, the sheet state 5000 after being wrapped is that each sheet 100 is individually wrapped, and the sheet state 6000 after being wrapped and cut is a sheet 100 in an independently packaged state.

[0034] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of this application.

Claims

1. A production device for sheet packaging, characterized in that: The invention comprises two groups of transfer components which are symmetrically arranged, each group of the transfer components comprises a front transfer unit (201), a distance reduction transfer unit (202) and a rear transfer unit (203), the distance reduction transfer unit (202) can receive the sheet (100) on the front transfer unit (201), and the two distance reduction transfer devices transfer the corresponding two sheets (100) to the corresponding rear transfer unit (203) after the distance between the projections in the direction perpendicular to the conveying direction remains unchanged or changes, and the rear transfer units (203) of the two groups of the transfer components are arranged opposite to each other, and the gap between them forms a conveying channel.

2. The production device for sheet packaging according to claim 1, characterized in that: The front transfer unit (201) comprises a first vacuum adsorption roller.

3. The production device for sheet packaging according to claim 2, characterized in that: The two first vacuum adsorption rollers are arranged opposite to each other, and the gap between them forms an input channel for the sheet (100).

4. The production device for sheet packaging according to claim 3, characterized in that: The vacuum adsorption holes on the two first vacuum adsorption rollers are staggered.

5. The production device for sheet packaging according to claim 1, characterized in that: The shortening and shifting unit (202) comprises a plurality of suction cups (204) that rotate around a common axis, and each suction cup (204) can accelerate or decelerate movement around the axis when driven by its independent power mechanism.

6. The production device for sheet packaging according to claim 1, characterized in that: The rear transfer unit (203) comprises a second vacuum adsorption roller, a conveyor belt (205) and a guide roller (206); the conveyor belt (205) is provided with a through hole; the vacuum adsorption roller and the guide roller (206) are respectively arranged at two ends of the conveyor belt (205); and the gap between the conveyor belts (205) of the two groups of the rear transfer units (203) forms the conveying channel.

7. The production device for sheet material (100) packaging according to any one of claims 1 to 6, characterized in that: The two groups of transfer components are distributed up and down, and one group of transfer components is located above the other group of transfer components.

8. The production device for sheet packaging according to claim 7, characterized in that: It also includes a packaging material (700) input mechanism, a folding mechanism (300), a sealing mechanism (400) and a cutting mechanism (500) which are sequentially arranged at the rear end of the rear transfer unit (203).

9. The production process of the production device according to claims 1 to 8, characterized in that: The sheets (100) are arranged at intervals on a conveying line, two front transfer units (201) sequentially receive two adjacent sheets (100) on the conveying line, two shortening transfer units (202) receive the sheets (100) on the corresponding front transfer units (201), and transfer the corresponding sheets (100) to the corresponding rear transfer units (203) after the distance between the projections of the two sheets (100) in a direction perpendicular to the conveying direction remains unchanged or changes, and the two sheets (100) are rearranged in a conveying channel.

10. The production process according to claim 9, characterized in that: The method also includes the steps of folding, bagging, sealing and cutting the rearranged sheets (100).

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