Unreeling device for PP material

Abstract

The utility model relates to a PP material unreeling device. One end of a first unreeling shaft and one end of a second unreeling shaft are arranged on a rotating disc, the other end of the first unreeling shaft and the other end of the second unreeling shaft are arranged in an installation groove of a rotating part, the rotating disc is rotationally arranged on a support, a rotating shaft is arranged in the middle of the rotating part, the rotating part rotates around the rotating shaft, and the rotating shaft is connected with a driving assembly. The first unreeling shaft and the second unreeling shaft alternately move between the first position and the second position, each installation groove corresponds to one set of locking assemblies, the locking assemblies lock or release the first unreeling shaft and the second unreeling shaft, a positioning assembly is arranged on the support, the positioning assembly is located at the first position, the positioning assembly comprises a positioning sleeve and a driving piece connected with the positioning sleeve, and the driving piece is connected with the positioning sleeve. The driving piece drives the positioning sleeve to be connected with or separated from the first unwinding shaft or the second unwinding shaft at the first position, and the positioning assembly is connected with the driving assembly. The unwinding device can be kept at the same position for unwinding, the influence on downstream equipment is reduced, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material processing technical field, especially relate to a PP material unwinding device. BACKGROUND

[0002] PP plastic, chemical name: polypropylene, English name: Polypropylene (abbreviation PP), the PP material unwinding device is a kind of equipment for processing and unwinding roll-shaped PP material, is widely used in packaging, printing, plastic processing and other industries.The main function of unwinding device is to unwind roll-shaped PP material smoothly and continuously, so as to carry out subsequent processing or handling, such as printing, coating, compounding etc., which mainly includes unwinding shaft, drive system etc., unwinding shaft is used to fix and support PP material roll, drive system is usually driven by motor, controls unwinding speed.For example, the patent with announcement number CN202010635U discloses a coating machine with novel unwinding shaft automatic switching structure, two unwinding shafts are installed on it, which can realize conveniently replacing the unwinding shaft of coating machine.But, its two unwinding shafts unwind at two positions, and the downstream tension control mechanism needs to be adjusted synchronously when unwinding shaft position is adjusted, and it needs to consume more adjustment time when switching different unwinding shafts. SUMMARY

[0003] The utility model discloses in order to solve the prior art problem, provide a kind of PP material unwinding device, which can make unwinding shaft rotate switching, facilitate the feeding of unwinding shaft.

[0004] The specific technical scheme is as follows: a PP material unwinding device, comprising at least one unwinding assembly, the unwinding assembly includes a first unwinding shaft, a second unwinding shaft and a drive assembly, one end of the first unwinding shaft and the second unwinding shaft is arranged on a turntable, the other end is arranged in the mounting groove of rotating part, the turntable is rotationally arranged on a support, the middle part of the rotating part is provided with a rotating shaft, the rotating part rotates around the rotating shaft, the rotating shaft is connected with the drive assembly, so that the first unwinding shaft and the second unwinding shaft alternately move between the first position and the second position, each mounting groove corresponds a set of locking assemblies, the locking assemblies lock or release the first and second unwinding shafts, the support is provided with a positioning assembly, the positioning assembly is located at the first position, the positioning assembly includes a positioning sleeve and a driving member connected with the positioning sleeve, the driving member drives the positioning sleeve to connect or separate from the first unwinding shaft or the second unwinding shaft at the first position, and the positioning assembly is connected with the drive assembly.

[0005] In some embodiments, the rotating part is provided with arc-shaped arms at both ends, the arc-shaped arms have mounting grooves, and the opening directions of the two mounting grooves are opposite.

[0006] In some embodiments, the locking assembly comprises a locking cylinder and a locking piece, the locking piece is connected with the locking cylinder and arranged at the opening of the arc-shaped arm, and the locking cylinder drives the locking piece to open or close the mounting slot.

[0007] In some embodiments, the driving assembly comprises a driving cylinder, a connecting rod assembly and a linkage plate, the driving cylinder is pivotally connected with the linkage plate through the connecting rod assembly, the linkage plate is connected with the rotating shaft, and the linkage plate is sleeved on the sleeve of the rotating shaft and the positioning sleeve.

[0008] In some embodiments, the connecting rod assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is pivotally connected with the support, the other end is pivotally connected with the second connecting rod, the second connecting rod is pivotally connected with the linkage plate, and the driving cylinder is pivotally connected with the first connecting rod.

[0009] In some embodiments, the support is provided with a plurality of spaced-apart unwinding assemblies.

[0010] In some embodiments, the first position is located inside the support, and the second position is located outside the support and corresponds to the notch of the support.

[0011] In some embodiments, the rotating disc is arranged in the circular hole of the support.

[0012] The technical effect of the PP material unwinding device is that the PP material unwinding device can unwind at the same position, reduce the influence on the downstream equipment, and improve the processing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0014] Figure 1 is a schematic view of a PP material unwinding device according to the present application.

[0015] Figure 2 is a schematic view of a rotating part according to the present application.

[0016] Figure 3 is a schematic view of a positioning assembly according to the present application.

[0017] Figure 4 is another schematic view of a PP material unwinding device according to the present application.

[0018] Figure 5 Figure 3 is a schematic view of the locking assembly of the rotating part of the embodiment of the utility model disengaging from the unwinding shaft. DETAILED DESCRIPTION

[0019] The technical solutions of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are some of the embodiments of the utility model, but not all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0020] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] The specific embodiments of the utility model will be described in detail in combination with the drawings. It should be understood that the specific embodiments described here are only for illustrating and explaining the utility model, and are not used to limit the utility model.

[0023] As Figures 1 to 5The PP material unwinding device of the embodiment includes at least one unwinding assembly 1 for unwinding the material roll 30. The material roll is formed by winding the PP material. The unwinding assembly 1 includes a first unwinding shaft 11, a second unwinding shaft 12, and a driving assembly 13. One end of the first unwinding shaft 11 and the second unwinding shaft 12 is arranged on a rotating disc 14, and the other end is arranged in a mounting groove 151 of a rotating part 15. The rotating disc 14 is driven by a motor, so that it rotates. The first and second unwinding shafts 12 are used to place the material roll 30. The material roll 30 can be rotated by the rotation of the first and second unwinding shafts 12, so that the PP material is output. The rotation of the first and second unwinding shafts 12 can be driven by the existing driving mechanism such as a motor arranged on a support 2. There are many examples in the prior art, and they will not be described here. The rotating disc 14 is arranged to rotate on the support 2. The rotating part 15 is arranged to rotate around a rotating shaft 16 arranged in the middle of the rotating part 15. The rotating part 15 rotates around the rotating shaft 16, so that the first unwinding shaft 11 and the second unwinding shaft 12 move alternately between a first position 10 and a second position 20. The rotating shaft 16 is connected with the driving assembly 3. The first unwinding shaft 11 and the second unwinding shaft 12 are the same in structure. When the unwinding shaft rotates at the first position 10, the material roll 30 starts to unwind. When the material roll 30 is used up, the unwinding shaft rotates to the second position 20, and the empty material roll is unloaded and replaced with a new material roll. The material roll originally at the second position rotates to the first position to continue unwinding, so that continuous unwinding can be maintained without stopping. Each mounting groove 151 corresponds to a set of locking assemblies 14. The locking assemblies 14 lock or release the first and second unwinding shafts, so that the unwinding shafts can be taken out of or installed in the mounting grooves. When taken out, the material roll can be installed or unloaded. The support 2 is provided with a positioning assembly 3. The positioning assembly 3 is located at the first position 10. The positioning assembly 3 includes a positioning sleeve 31 and a driving member 32 connected with the positioning sleeve 31. The driving member 32 drives the positioning sleeve 31 to connect or separate from the first unwinding shaft 11 or the second unwinding shaft 12 at the first position 10. The positioning assembly 3 is connected with the driving assembly 13. The driving member 32 of the embodiment is a pneumatic cylinder. When the positioning sleeve 31 is connected with the unwinding shaft, the unwinding shaft can be positioned. The two ends of the unwinding shaft are positioned to avoid shaking when the unwinding shaft rotates. At the same time, when the material roll is loaded on the unwinding shaft at the second position 20, the rotating part 15 rotates around the positioning sleeve 31, so that the unwinding shaft is separated from the mounting groove 151. Figure 1As shown, at this time, the first unwinding shaft 11 is located at the first position 10 and is positioned at one end by the positioning assembly 3 for unwinding; after the material 30 is used up, the positioning assembly 3 is released, the locking assembly 14 locks the two unwinding shafts, the rotating disc 14 rotates to drive the two unwinding shafts and the rotating part 15 to rotate around the rotating shaft 16, so that the first unwinding shaft 11 rotates to the second position 20, the second unwinding shaft 12 (which has been loaded with a material roll) rotates to the first position 10, the positioning assembly 3 is locked, and the second unwinding shaft 12 rotates to start unwinding. At this time, the locking assembly of the first unwinding shaft 11 is released, the rotating part 15 can rotate around the positioning sleeve 31, so that the mounting groove 151 of the rotating part 15 corresponding to the first unwinding shaft 11 is separated from the first unwinding shaft 11 (as shown), and the first unwinding shaft 11 can be loaded, so as not to affect the unwinding of the second unwinding shaft 12, and the efficiency of loading is improved. Figure 5

[0024] In this embodiment, the rotating part 15 is provided with an arc-shaped arm 152 at both ends, the arc-shaped arm 152 has a mounting groove 151, and the opening directions of the two mounting grooves 151 are opposite, so that one end of the unwinding shaft can be carried in the arc-shaped arm 152. The locking assembly 14 includes a locking cylinder 141 and a locking piece 142, the locking piece 142 is connected with the locking cylinder 141 and is arranged at the opening of the arc-shaped arm 152, the locking cylinder 141 drives the locking piece 142 to open or close the mounting groove 151, the locking cylinder 141 drives the locking piece 142 to extend and retract, when the locking piece 142 retracts, the mounting groove 151 is opened, and one end of the unwinding shaft can be separated from the arc-shaped arm 152.

[0025] In this embodiment, the driving assembly 13 includes a driving cylinder 131, a connecting rod assembly 132 and a linkage plate 133, the driving cylinder 131 is pivotally connected with the linkage plate 133 through the connecting rod assembly 132, so as to swing the connecting rod assembly 132 and drive the linkage plate 133 to swing through the driving cylinder 131. The linkage plate 133 is sleeved on the sleeve 33 of the rotating shaft 16 and the positioning sleeve 31 respectively, the positioning sleeve 31 is arranged in the through hole 331 of the sleeve 33, so that the positioning sleeve 31 can be driven by the driving piece 32 to extend and retract in the through hole 331. When the positioning sleeve 31 retracts into the sleeve 33, the positioning sleeve 31 is separated from the unwinding shaft, at this time, the two unwinding shafts can rotate and change positions. When the positioning sleeve 31 is sleeved on the unwinding shaft (as shown), Figure 3 ​When the linkage plate 133 swings, the sleeve 33 rotates, so that the linkage plate 133 drives the rotating part 15 to rotate synchronously, and the arc-shaped arm 152 at one end of the rotating part is separated from the unwinding shaft. The linkage assembly 132 comprises a first linkage 1321 and a second linkage 1322, one end of the first linkage 1321 is pivotally connected with the support 2, the other end is pivotally connected with the second linkage 1322, the second linkage 1322 is pivotally connected with the linkage plate 133, and the driving cylinder 131 is pivotally connected with the first linkage 1321. When the telescopic rod of the driving cylinder 131 extends, the first linkage 1321 rotates, drives the second linkage 1322 to swing, and drives the linkage plate 133 to rotate around the sleeve 33.

[0026] In the embodiment, the support 2 is provided with a plurality of spaced unwinding assemblies 1, each of which can work independently, so as to improve the unwinding amount, and two groups of unwinding assemblies are arranged in the embodiment. The first position 10 is located on the inner side of the support 2, and the second position 20 is located on the outer side of the support 2 and corresponds to the notch 21 of the support 2, so as to facilitate the feeding of the material roll 30. The rotating disc 14 is arranged in the circular hole 22 of the support 2, so that the rotating disc 14 can rotate in the circular hole 22.

[0027] The unwinding device for PP material can keep unwinding at the same position, reduce the influence on downstream equipment, and improve the processing efficiency; in addition, the other unwinding shaft can be fed during unwinding, and the feeding efficiency is improved.

[0028] The unwinding device for PP material is described above, but the utility model is not limited to the above specific embodiments, and various modifications or changes can be made without departing from the scope of the claims. The utility model includes various modifications and changes within the scope of the claims.

[0029] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not limited to them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A PP material unwinding device comprising at least one unwinding assembly, the unwinding assembly comprising a first unwinding shaft, a second unwinding shaft and a drive assembly, characterized in that, One end of the first and second unwinding shafts is arranged on the rotating disc, and the other end is arranged in the mounting slot of the rotating part. The rotating disc is arranged on the support in a rotating manner. The middle part of the rotating part is provided with a rotating shaft. The rotating part rotates around the rotating shaft. The rotating shaft is connected with the driving assembly. The first and second unwinding shafts are alternately moved between the first position and the second position. Each mounting slot corresponds to a set of locking assemblies. The locking assemblies lock or release the first and second unwinding shafts. The support is provided with a positioning assembly. The positioning assembly is located at the first position. The positioning assembly includes a positioning sleeve and a driving piece connected with the positioning sleeve. The driving piece drives the positioning sleeve to be connected with or separated from the first or second unwinding shaft at the first position. The positioning assembly is connected with the driving assembly.

2. The PP material unwinding device according to claim 1, characterized in that, The rotating part is provided with arc-shaped arms at both ends. The arc-shaped arms are provided with mounting slots. The opening directions of the two mounting slots are opposite.

3. The PP material unwinding device according to claim 2, characterized in that, The locking assembly includes a locking cylinder and a locking piece. The locking piece is connected with the locking cylinder and arranged at the opening of the arc-shaped arm. The locking cylinder drives the locking piece to open or close the mounting slot.

4. The PP material unwinding device according to claim 1, characterized in that, The driving assembly includes a driving cylinder, a connecting rod assembly and a linkage plate. The driving cylinder is pivotally connected with the linkage plate through the connecting rod assembly. The linkage plate is connected with the rotating shaft. The linkage plate is respectively sleeved on the sleeve of the rotating shaft and the positioning sleeve.

5. The PP material unwinding device according to claim 4, characterized in that, The connecting rod assembly includes a first connecting rod and a second connecting rod. One end of the first connecting rod is pivotally connected with the support. The other end is pivotally connected with the second connecting rod. The second connecting rod is pivotally connected with the linkage plate. The driving cylinder is pivotally connected with the first connecting rod.

6. The PP material unwinding device according to claim 1, characterized in that, The support is provided with a plurality of spaced unwinding assemblies.

7. The PP material unwinding device according to claim 1, characterized in that, The first position is located inside the support. The second position is located outside the support and corresponds to the notch of the support.

8. The PP material unwinding device according to claim 1, characterized in that, The rotating disc is arranged in the circular hole of the support.

Images