Wedge-shaped tensioning film collecting and feeding shaft set

Abstract

The utility model belongs to the technical field of film feeding shafts, and particularly relates to a wedge-shaped tensioning film receiving and feeding shaft set which comprises a film receiving and feeding shaft barrel, an end shaft, a first end cover and a second end cover, the first end cover and the second end cover are arranged at the two ends of the film receiving and feeding shaft barrel respectively, the end shaft is fixed outside the film receiving and feeding shaft barrel through the first end cover, and the interior of the film receiving and feeding shaft barrel is of a hollow structure. A plurality of kidney-shaped holes are formed in a barrel body of the film collecting and feeding shaft barrel, an adjustable radial moving expansion block mechanism is arranged in the film collecting and feeding shaft barrel, the adjustable radial moving expansion block mechanism stretches out through the kidney-shaped holes to complete the expansion function, the defects in the prior art are overcome, and the adjustable radial moving expansion block mechanism is arranged in the film collecting and feeding shaft barrel. By adjusting radial extension of the expansion blocks, the collected and conveyed film belt is expanded, slipping failure of the collected and conveyed film belt is avoided, and film belt discharging is facilitated through radial retraction after work is completed.

Description

Technical Field

[0001] This utility model belongs to the field of film feeding shaft technology, specifically relating to a wedge-shaped tensioning and feeding film feeding shaft assembly. Background Technology

[0002] Film collection and receiving shafts are primarily used in the collection of tubular materials for batch cutting of trademarks and labels. Their main function is to collect used packaging film. For example, in continuous packaging, packaging film is continuously pulled from the roll to package products. After packaging is complete, the remaining or used film needs to be neatly rolled up, and this is where the film collection shaft plays a crucial role. It is typically motor-driven, collecting the film at a specific speed and tension. The winding speed can be adjusted according to the packaging rhythm and the amount of film used, ensuring a smooth packaging process.

[0003] The structure of a film take-up shaft generally includes a rotating cylinder with anti-slip devices such as rubber pads or special grooves to better grip the film and prevent it from slipping or shifting during the take-up process.

[0004] However, most existing anti-slip mechanisms are fixed, which makes it inconvenient to unload materials with good anti-slip effects, while those with good unloading effects are relatively loose and prone to slipping. Therefore, it is necessary to develop a film feeding shaft assembly that can effectively prevent slipping and facilitate material unloading to meet actual needs. Utility Model Content

[0005] The purpose of this utility model is to provide a wedge-shaped tensioning film conveying shaft assembly, which overcomes the shortcomings of the prior art. The adjustable radially moving expansion block mechanism is set inside the film conveying shaft cylinder. By adjusting the radial extension of the expansion block, the film belt being conveyed is tightened to prevent slippage and failure. After the work is completed, the film belt is radially retracted to facilitate unloading.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A wedge-shaped tensioning film delivery shaft assembly includes a film delivery shaft cylinder, an end shaft, an end cap one, and an end cap two. The end cap one and the end cap two are respectively disposed at both ends of the film delivery shaft cylinder. The end shaft is fixed to the outside of the film delivery shaft cylinder through the end cap one. The inside of the film delivery shaft cylinder is a hollow structure. Several oblong holes are provided on the body of the film delivery shaft cylinder. An adjustable radially moving expansion block mechanism is provided inside the film delivery shaft cylinder. The adjustable radially moving expansion block mechanism extends through the oblong holes to complete the tensioning function.

[0008] Furthermore, the receiving and feeding membrane shaft is an aluminum cylinder.

[0009] Further, the adjustable radial movement bulge block mechanism comprises a screw rod, a left-handed nut, a right-handed nut, a plurality of bulge blocks, a rotating handle and a reset spring, the left-handed nut and the right-handed nut are threadedly connected at two ends of the screw rod respectively, the left-handed nut and the right-handed nut are oppositely threaded, the left-handed nut and the right-handed nut move outward simultaneously or move inward simultaneously when the screw rod is screw-rotated, a plurality of wedge-shaped notches are uniformly distributed on the left-handed nut and the right-handed nut, the two ends of the bulge block are matched with the wedge-shaped notches of the left-handed nut and the wedge-shaped notches of the right-handed nut respectively and slide on the wedge-shaped notches, the bulge block is driven to move radially by the wedge-shaped notches when the screw rod is screw-rotated, and the plurality of bulge blocks are directly connected by the reset spring and are retracted towards the screw rod under the action of the reset spring.

[0010] Further, a fixed notch is arranged at the middle of one side of the end cover located in the film receiving and sending shaft cylinder, a mounting hole is arranged at the middle of the second end cover, one end of the screw rod is mounted in the fixed notch through a bearing or a copper bush, the other end is mounted in the mounting hole through a bearing or a copper bush and is connected with the rotating handle after extending out of the mounting hole, the screw rod is screw-rotated by the rotating handle, the plurality of bulge blocks and the plurality of waist-shaped holes are one-to-one corresponding, and the bulge block extends radially out of or retracts in the waist-shaped hole.

[0011] Further, the rotating handle is connected with the screw rod through a key.

[0012] Further, reset springs are arranged at the two ends of the bulge block.

[0013] Further, the reset spring is an annular spring, round holes are arranged at the two ends of the bulge block, and the annular spring connects the plurality of bulge blocks together through the round holes.

[0014] Further, the reset spring is a plurality of springs, hook structures are arranged at the two ends of the bulge block, and the plurality of springs connect the plurality of bulge blocks together through the hook structures.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The adjustable radial movement bulge block mechanism is arranged in the film receiving and sending shaft cylinder, the film belt is prevented from slipping and failing by adjusting the radial extension of the bulge block and tightening the received and sent film belt, and the film belt is conveniently discharged by radial retraction after work is completed.

[0017] 2. The wedge-shaped mechanism is designed in the bulge block, and the waist-shaped hole designed on the film-receiving shaft cylinder is used as the guide limiting mechanism. The wedge-shaped notch at the other end of the bulge block is matched with the wedge-shaped notch of the left (right) screw nut to slide. The left (right) screw nut is matched with the screw rod in a screw manner. When the screw rod is rotated clockwise, the left screw nut obtains displacement moving to the middle, and the right screw nut also obtains displacement moving to the middle. The bulge block thus extends radially to achieve the effect of tightening the film-receiving belt. When the screw rod is rotated counterclockwise, the left screw nut obtains displacement moving to the two sides, and the right screw nut also obtains displacement moving to the two sides. The bulge block thus loses displacement extending outward. The two ends of the bulge block are designed with return springs. Under the action of the return springs, the bulge block moves radially to the center to achieve the effect of shrinking the film-receiving belt.

[0018] 3. The film-receiving shaft cylinder has a slow rotating speed, and the operation of tightening the film-receiving shaft can be operated at any time without stopping the machine, and the operation is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of a wedge-shaped tensioning film-receiving shaft group.

[0020] Figure 2 It is a structure schematic view of a wedge-shaped tensioning film-receiving shaft group Figure One .

[0021] Figure 3 It is a structure schematic view of a wedge-shaped tensioning film-receiving shaft group Figure Two .

[0022] Figure 4 It is a sectional structure schematic view of a wedge-shaped tensioning film-receiving shaft group.

[0023] Figure 5 It is a structure schematic view of an adjustable radial moving bulge block mechanism.

[0024] Figure 6 It is a structure schematic view of a ring-shaped spring type return structure.

[0025] Figure 7 It is a structure schematic view of a plurality of spring type return structures. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment one

[0028] As shown in the figure, the wedge-shaped tensioning film receiving and sending shaft group comprises a film receiving and sending shaft cylinder 1, an end shaft 21, an end cover one 2 and an end cover two 3, the end cover one 2 and the end cover two 3 are arranged at two ends of the film receiving and sending shaft cylinder 1 respectively, the end shaft 21 is fixed outside the film receiving and sending shaft cylinder 1 through the end cover one 2, the film receiving and sending shaft cylinder 1 is a hollow structure, a plurality of waist-shaped holes 11 are arranged on the film receiving and sending shaft cylinder, an adjustable radial moving bulge block mechanism is arranged in the film receiving and sending shaft cylinder 1, the adjustable radial moving bulge block mechanism is extended out through the waist-shaped hole 11 to complete the bulging function.

[0029] Further, the adjustable radial moving bulge block mechanism comprises a screw rod 4, a left-handed nut 41, a right-handed nut 42, a plurality of bulge blocks 5, a rotating handle 6 and a reset tension spring 51, the left-handed nut 41 and the right-handed nut 42 are threadedly connected at two ends of the screw rod 4 respectively, the left-handed nut 41 and the right-handed nut 42 are oppositely threaded, the left-handed nut 41 and the right-handed nut 42 move outward or inward simultaneously when the screw rod 4 is screw-rotated, a plurality of wedge-shaped notches are uniformly distributed on the left-handed nut 41 and the right-handed nut 42, the two ends of the bulge block 5 are matched with the wedge-shaped notches of the left-handed nut and the wedge-shaped notches of the right-handed nut respectively and slide on the wedge-shaped notches, the bulge block is driven to move radially through the wedge-shaped notches when the screw rod 4 is screw-rotated, the plurality of bulge blocks are directly connected through the reset tension spring and are retracted towards the screw rod under the action of the reset tension spring.

[0030] Further, a fixed notch 22 is arranged in the middle of one side of the end cover one in the film receiving and sending shaft cylinder, a mounting hole 31 is arranged in the middle of the end cover two, one end of the screw rod is mounted in the fixed notch 22 through a bearing or a copper bush, the other end is mounted in the mounting hole 31 through a bearing or a copper bush and is connected with the rotating handle after extending out of the mounting hole, the screw rod is controlled to screw-rotate through the rotating handle, the plurality of bulge blocks are one-to-one corresponding to the plurality of waist-shaped holes, the bulge blocks extend radially out of or retract in the waist-shaped holes.

[0031] Further, the rotating handle is connected with the screw rod through a key.

[0032] Further, the two ends of the bulge block are provided with the reset tension spring 51.

[0033] Further, the film receiving and sending shaft cylinder 1 is an aluminum cylinder.

[0034] Embodiment two

[0035] The reset tension spring 51 is an annular spring, round holes 53 are arranged at the two ends of the bulge block, and the annular spring connects the plurality of bulge blocks together through the round holes.

[0036] Embodiment three

[0037] Further, the reset tension spring 51 is a plurality of tension springs, hook structures 52 are arranged at the two ends of the two sides of the bulge block, and the tension spring connects the plurality of bulge blocks together through the hook structure.

[0038] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A wedge tensioning film take-up shaft assembly comprising a film take-up shaft barrel, an end shaft, an end cap one and an end cap two, said end cap one and end cap two being disposed at opposite ends of the film take-up shaft barrel, said end shaft being secured to the outside of the film take-up shaft barrel by the end cap one, characterized in that: The receiving and sending film shaft cylinder is hollow, a plurality of waist-shaped holes are arranged on the receiving and sending film shaft cylinder, an adjustable radial moving bulge mechanism is arranged in the receiving and sending film shaft cylinder, the adjustable radial moving bulge mechanism is extended out of the waist-shaped holes to complete the bulging function; the receiving and sending film shaft cylinder is an aluminum cylinder; the adjustable radial moving bulge mechanism comprises a screw rod, a left-handed nut, a right-handed nut, a plurality of bulges, a rotating handle and a reset spring, the left-handed nut and the right-handed nut are threadedly connected at two ends of the screw rod respectively, the left-handed nut and the right-handed nut are oppositely threaded, the left-handed nut and the right-handed nut move outward or inward simultaneously when the screw rod is screw-rotated, a plurality of wedge-shaped notches are uniformly arranged on the left-handed nut and the right-handed nut, the two ends of the bulges are matched with the wedge-shaped notches of the left-handed nut and the wedge-shaped notches of the right-handed nut respectively and slide on the wedge-shaped notches, the bulges are moved radially by the wedge-shaped notches when the screw rod is screw-rotated, and the plurality of bulges are directly connected by the reset spring and are retracted towards the screw rod under the action of the reset spring.

2. A wedge tensioning take-up spool assembly according to claim 1 wherein: A fixing notch is arranged in the middle of one side of the end cap in the receiving and sending film shaft cylinder, a mounting hole is arranged in the middle of the end cap two, one end of the screw rod is mounted in the fixing notch through a bearing or a copper bush, the other end is mounted in the mounting hole through a bearing or a copper bush and is connected with the rotating handle after extending out of the mounting hole, the screw rod is screw-rotated by the rotating handle, the plurality of bulges and the plurality of waist-shaped holes are one-to-one corresponding, and the bulges are radially extended or retracted in the waist-shaped holes.

3. A wedge tensioning take-up spool assembly according to claim 1 wherein: The rotating handle is connected with the screw rod through a key.

4. A wedge tensioning take-up spool assembly according to claim 1 wherein: Reset springs are arranged at the two ends of the bulges.

5. A wedge tensioning spool assembly according to claim 4, wherein: The reset spring is an annular spring, round holes are arranged at the two ends of the bulges, and the annular spring connects the plurality of bulges together through the round holes.

6. A wedge tensioning take-up spool assembly according to claim 4 wherein: The reset spring is a plurality of springs, hook structures are arranged at the two ends of the bulges, and the plurality of bulges are connected together by the hook structures.

Images