Polyolefin film double-layer mother roll aging rack

Abstract

The utility model discloses a polyolefin film double-layer mother roll aging rack. The film roll placing device comprises the center plate, the distance adjusting assemblies arranged on the two side walls of the center plate, the vertical rods arranged on the outer walls of the two sides of the distance adjusting assemblies and the lifting assemblies arranged at the upper ends of the vertical rods. A first motor is controlled to operate to drive a first bevel gear connected with the first motor to rotate, drive second bevel gears on the two sides to rotate in a meshed mode and drive a screw connected with the second bevel gears to rotate in a meshed mode, and under the limiting effect that a limiting plate is embedded in a limiting groove, the limiting plate is relatively meshed on the surface of a toothed plate; the telescopic plate extends upwards, vertically and stably in the telescopic groove, so that the supporting block at the upper end is driven to adjust the vertical height between the supporting block and the center plate, and the supporting block on the upper side of the telescopic plate can be used for placing a film roll with a larger diameter.

Description

Technical Field

[0001] This utility model relates to the field of aging rack technology, specifically to an aging rack for a double-layer master roll of polyolefin film. Background Technology

[0002] The production process of biaxially oriented polyolefin (BEO) plastic film typically requires aging treatment to stabilize the film's physical properties before slitting. The aging method involves winding the stretched film onto a master roll of steel core, with the core's length exceeding the film's width, leaving a gap at each end for lifting and support. The diameter of the wound steel core is usually 500–800 mm, and after winding with the film, the diameter can reach approximately 1500 mm, weighing around 10–20 tons. The lifting method involves using a bridge crane to lift both ends of the steel core with slings or clamps, transporting it to an aging rack for placement and aging treatment.

[0003] Currently, commonly used aging racks are single-layer or multi-layer steel structures. Single-layer racks are convenient to use but occupy a large area, resulting in low factory space utilization. Multi-layer racks can significantly improve factory space utilization, and the top layer can be directly lifted by a bridge crane. However, when placing or removing the mother rolls from the lower layers, manual movement of the mother rolls is required, pushing them along the rack's crossbeams, which is difficult and poses high safety risks. In recent years, independent two-layer aging racks have emerged abroad. The lower layer is a fixed structure, while the upper layer's load-bearing crossbeams can be flipped open using pneumatic or hydraulic devices. During operation, the upper layer's crossbeams are first flipped open, the mother roll is placed in the lower layer, and then the upper layer's crossbeams are flipped back to the load-bearing position to place the mother roll. When retrieving the mother roll, the upper layer is removed first, then the upper layer's crossbeams are flipped back to the non-load-bearing position to remove the lower layer's mother roll.

[0004] However, there are some problems with the use of existing aging racks: With the continuous upgrading of BOPP equipment and the continuous increase in equipment capacity, the specifications and weight of single rolls are getting larger and larger, requiring aging racks with greater storage capacity. Because single-layer roll racks occupy a large amount of factory space, they seriously affect the utilization rate of factory space. Traditional multi-layer roll racks require manual movement of rolls, which is difficult to operate, labor-intensive, and poses high safety risks. Utility Model Content

[0005] The purpose of this invention is to provide a polyolefin film double-layer master roll aging frame to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a center plate, support rods installed on both sides of the center plate, uprights installed on both sides of the support rods, and a lifting assembly installed on the upper end of the uprights;

[0007] The lifting assembly includes a telescopic groove inside the upright, a telescopic plate is movably installed in the telescopic groove, a gear is provided on the rear side wall of the telescopic plate, a rear groove is provided on the rear side wall of the telescopic groove, and a toothed plate that cooperates with the gear is provided in the rear groove.

[0008] As a further improvement of this utility model: the two side walls of the telescopic groove are provided with side grooves, and the two sides of the telescopic plate are equipped with side plates that cooperate with the side grooves.

[0009] As a further improvement of this utility model, the rotation input end of the left end of the gear is connected to the rotation output end of the second motor.

[0010] As a further improvement of this utility model, the upper ends of both the center plate and the telescopic plate are independently equipped with support blocks.

[0011] As a further embodiment of this utility model: a shaft is detachably inserted between the support blocks, and a film roll is fitted between the front and rear shafts; the two sides of the support block are inverted triangular in shape.

[0012] As a further embodiment of this utility model, the tooth patterns on the surface of the gear mesh with the tooth patterns on the surface of the gear plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model controls the operation of a second motor to drive the gear connected to it to rotate, so that they mesh relative to each other on the surface of the toothed plate. Under the limitation of the side plate being embedded in the side groove, the telescopic plate extends vertically and stably upward in the telescopic groove, thereby driving the upper support block to adjust the vertical height between it and the center plate, so that the support block on the upper side of the telescopic plate can place a film roll with a larger diameter. Attached Figure Description

[0015] Figure 1 This is a front cross-sectional view of an embodiment of the present utility model;

[0016] Figure 2 This is a side view of an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the lifting assembly according to an embodiment of the present utility model;

[0019] Figure 5 This is an embodiment of the present utility model. Figure 4 A magnified view of part A in the diagram.

[0020] In the diagram: 1. Center plate; 2. Support rod; 3. Upright pole; 401. Expansion groove; 402. Expansion plate; 403. Side groove; 404. Side plate; 405. Gear; 406. Second motor; 407. Rear groove; 408. Gear plate; 5. Support block; 6. Shaft; 7. Film roll. Detailed Implementation

[0021] To facilitate the solution of the problem, this utility model provides a double-layer master roll aging frame for polyolefin films. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] like Figures 1 to 5 As shown, this embodiment provides a polyolefin film double-layer master roll aging frame, including a center plate 1, support rods 2 installed on both sides of the center plate 1, uprights 3 installed on both sides of the support rods 2, and a lifting assembly 4 installed on the upper end of the uprights 3;

[0024] The lifting assembly 4 includes a telescopic groove 401 opened inside the upright 3. A telescopic plate 402 is movably installed in the telescopic groove 401. A gear 405 is provided on the rear side wall of the telescopic plate 402. A rear groove 407 is opened on the rear side wall of the telescopic groove 401. A toothed plate 408 that cooperates with the gear 405 is provided in the rear groove 407.

[0025] Example 2

[0026] In addition to all the technical features in Embodiment 1, this embodiment also includes: side grooves 403 are provided on both sides of the telescopic groove 401, and side plates 404 that cooperate with the side grooves 403 are installed on both sides of the telescopic plate 402. Under the limitation of the side plates 404 being embedded in the side grooves 403, the telescopic plate 402 extends vertically and stably upward in the telescopic groove 401.

[0027] Furthermore, the rotation input end of the left end of the gear 405 is connected to the rotation output end of the second motor 406. The operation of the second motor 406 drives the gear 405 connected to it to rotate, thereby adjusting the height more efficiently.

[0028] Furthermore, both the center plate 1 and the telescopic plate 402 are independently equipped with support blocks 5. The support block 5 consists of a horizontal plane, two symmetrical inclined planes, and guide plates at both ends for guiding the steel core to fall. The exposed width of the shaft 6 is smaller than that of the film roll, which is to better realize the placement of the film roll 7.

[0029] Furthermore, a shaft 6 is detachably inserted between the support blocks 5, and a film roll 7 is installed between the front and rear shafts 6. The two sides of the support block 5 are inverted triangular in shape. The distance between the two uprights 3 is adjusted so that a film roll 7 with a larger diameter can be placed on the upper side of the center plate 1. This drives the upper support block 5 to adjust the vertical height between itself and the center plate 1 so that a film roll 7 with a larger diameter can be placed on the support block 5 on the upper side of the telescopic plate 402.

[0030] Furthermore, the teeth on the surface of the gear 405 mesh with the teeth on the surface of the toothed plate 408, and the meshing of the teeth facilitates quick adjustment of the frame height.

[0031] like Figure 1 and Figure 2 As shown, the aging rack of this utility model has a two-layer structure, with a row of support platforms on each layer. Each support platform consists of a horizontal plane and two symmetrical inclined planes forming a three-sided support structure. The end sides have guide plates with outward-curved surfaces to guide the steel core as it falls to a fixed support position. The upper layer is an independently supported structure, with one support platform on each column. The lower support platform is located between the columns of the two upper support platforms. During use, the mother rolls are alternately placed on the lower and upper support platforms. The placement positions of the mother rolls are independent and fixed. When retrieving them, the upper mother rolls are hoisted first, followed by the lower mother rolls. Combined with an intelligent vertical storage system, each position is equivalent to a storage location. The intelligent bridge crane can achieve fully automatic placement and retrieval of mother rolls through coordinate positioning, and can also perform operations such as mother roll storage location switching.

[0032] This mother roll aging rack fully utilizes the cylindrical shape of the mother roll and the spatial characteristics of the steel cores at both ends being smaller than the diameter of the middle mother roll, maximizing the use of both planar and three-dimensional space and improving the utilization rate of factory space. The rack structure is simple and reliable, and no manual movement of the mother rolls is required during operation. Each mother roll is in a fixed position, and in conjunction with the operation of an intelligent bridge crane, it can realize the function of automatically placing and retrieving mother rolls in an intelligent vertical storage system.

[0033] Compared to single-layer aging racks, the storage capacity of master rolls is increased by 2 times within the same factory area; compared to traditional multi-layer aging racks, the height of the space is reduced, improving the space utilization of the factory; and the master rolls do not need to be moved manually, reducing the labor intensity and safety risks for workers.

[0034] Working principle: When it is necessary to place film rolls 7 of different diameters, the second motor 406 is controlled to rotate, driving the gear 405 connected to it to rotate, so that they mesh relative to each other on the surface of the toothed plate 408. Under the limitation of the side plate 404 being embedded in the side groove 403, the telescopic plate 402 extends vertically and stably upward in the telescopic groove 401, thereby driving the upper support block 5 to adjust the vertical height between it and the center plate 1, so that the support block 5 on the upper side of the telescopic plate 402 can place film rolls 7 of larger diameters.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A polyolefin film double-layer master roll aging frame, characterized in that: It includes a center plate (1), support rods (2) installed on both sides of the center plate (1), uprights (3) installed on both sides of the support rods (2), and a lifting assembly (4) installed on the upper end of the uprights (3); The lifting assembly (4) includes a telescopic groove (401) opened inside the upright (3), a telescopic plate (402) is movably installed in the telescopic groove (401), a gear (405) is provided on the rear side wall of the telescopic plate (402), a rear groove (407) is provided on the rear side wall of the telescopic groove (401), and a toothed plate (408) that cooperates with the gear (405) is provided in the rear groove (407); The aging rack has a two-layer structure, with a row of load-bearing platforms on both the upper and lower layers. Each load-bearing platform is a three-sided support structure consisting of a horizontal plane and two symmetrical inclined planes, used to support the mother roll. The upper part is an independent support structure, with a load-bearing platform on each column, and the lower load-bearing platform is located between the columns of the two upper load-bearing platforms; When in use, the mother roll can be placed alternately on the lower and upper support platforms, and the placement position of the mother roll is independent and fixed. The aging frame is provided with a guide plate with an outer arc surface at one end. The guide plate is used to guide the steel core of the mother coil to fall into a fixed support position when it falls.

2. The polyolefin film double-layer master roll aging frame according to claim 1, characterized in that: The telescopic groove (401) has side grooves (403) on both sides, and the telescopic plate (402) has side plates (404) that cooperate with the side grooves (403) on both sides.

3. The polyolefin film double-layer master roll aging frame according to claim 1, characterized in that: The left end of the gear (405) is connected to the rotation input end of the second motor (406).

4. The polyolefin film double-layer master roll aging frame according to claim 1, characterized in that: Both the center plate (1) and the telescopic plate (402) have support blocks (5) installed independently on their upper ends.

5. The polyolefin film double-layer master roll aging frame according to claim 4, characterized in that: A shaft (6) is detachably inserted between the support blocks (5), and a film roll (7) is fitted between the front and rear shafts (6). The two sides of the support block (5) are inverted triangular in shape.

6. The polyolefin film double-layer master roll aging frame according to claim 1, characterized in that: The teeth on the surface of the gear (405) mesh with the teeth on the surface of the tooth plate (408).

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