A vertical packaging machine for material rolls

Abstract

This utility model relates to the field of roll packaging technology, specifically a vertical packaging machine for rolls, including a base plate. A roll support unit for driving the roll rotation and a lifting assembly for adjusting the winding height are fixedly mounted on the base plate. A winding ring for rotating and winding the packaging film is installed on the lifting assembly. A hollow shaft is fixedly mounted on the winding ring. An unwinding assembly for clamping and fixing the film roll and supporting its unwinding is installed outside the hollow shaft. By setting a pad, an expansion assembly, and a control assembly, the friction generated by the contact between the pad and the unwinding roller provides basic resistance for unwinding the film roll, ensuring the packaging film remains taut throughout the winding process, thus improving the stability of packaging quality. Simultaneously, the adjustment structure composed of a knob, threaded column, wedge block, and expansion plate allows for changing the tightness of the contact between the pad and the unwinding roller, achieving stepless adjustment of tension to adapt to film rolls of different materials.

Description

Technical Field

[0001] This utility model relates to the field of material roll packaging technology, and in particular to a vertical packaging machine for material rolls. Background Technology

[0002] Vertical packaging machines for metal coils are automated packaging equipment designed specifically for metal coils. Their core function is to achieve rust prevention, corrosion prevention, dust prevention, and sealing of products by wrapping packaging materials (such as woven bags, composite paper, non-woven fabrics, and stretch film), reducing surface wear, facilitating storage and transportation, and improving product quality and packaging efficiency.

[0003] A steel coil packaging machine disclosed in Chinese Patent Publication No. CN221776175U, by setting up two alternating packaging stations, can immediately package the next roll of steel after the previous roll is packaged, without the need for unloading and waiting, thus improving the efficiency of steel coil packaging. However, according to the steel coil packaging machine provided by related technologies and existing technologies, in the process of winding the packaging film, when the packaging film is pulled and unwound from the unwinding shaft, the lack of an effective tension adjustment mechanism makes it impossible to provide stable and controllable tension for the packaging film. This makes it difficult for the film to adhere tightly and evenly to the surface of the roll, which can easily cause the packaging layer to become loose, wrinkled or misaligned, reducing the stability of packaging quality. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a vertical packaging machine for material rolls.

[0005] The purpose of this utility model is achieved through the following technical solution: a vertical packaging machine for material rolls, including a base plate, on which a roll support unit for driving the roll to rotate and a lifting component for adjusting the winding height are fixedly provided. A winding ring for rotating and winding the packaging film is installed on the lifting component. A hollow shaft is fixedly provided on the winding ring. An unwinding component for clamping and fixing the film roll and supporting its unwinding is installed on the outside of the hollow shaft. A pad is sleeved in the middle section of the hollow shaft. A plurality of outward expansion components for pushing the pad to expand outward are evenly installed on the circumference of the hollow shaft. A control component for pushing the outward expansion components outward is provided inside the hollow shaft.

[0006] Preferably, the expansion assembly includes a first wedge block that is radially slidably mounted on the middle section of the hollow shaft, and an expansion plate is fixedly provided at one end of the first wedge block near the pad sleeve.

[0007] Preferably, the control component includes a threaded post that is axially threaded inside the hollow shaft. One end of the threaded post away from the winding ring extends to the outside of the hollow shaft and is fixedly provided with a knob. One end of the threaded post away from the knob is fixedly provided with a fixed shaft. A second wedge block is fixedly provided at the position corresponding to the first wedge block.

[0008] Preferably, the outer expansion plate is arc-shaped and fits the inner wall of the gasket.

[0009] Preferably, the unwinding assembly includes an unwinding roller rotatably mounted outside the hollow shaft, with a fixed ring fixedly provided at one end of the unwinding roller near the winding ring, and a movable ring threadedly installed at the other end of the unwinding roller away from the winding ring.

[0010] Preferably, the lifting assembly includes a lifting frame fixed to the base plate, an electric push rod is fixedly provided at the bottom of the lifting frame, the output end of the electric push rod passes downward through the lifting frame and is fixedly provided with a drive frame for driving the winding ring to rotate, and the drive frame is slidably connected to the lifting frame.

[0011] Preferably, the side opposite to the fixed ring and the movable ring is tapered.

[0012] Beneficial effects:

[0013] This vertical packaging machine for film rolls utilizes a pad, an expansion assembly, and a control assembly. The friction generated by the contact between the pad and the unwinding roller provides basic resistance for unwinding the film roll, ensuring that the packaging film remains taut throughout the winding process. This prevents loosening or wrinkling due to insufficient tension, thus improving the stability of packaging quality. Simultaneously, the adjustment structure, consisting of a knob, threaded column, wedge block, and expansion plate, allows for dynamic adjustment of the tightness of the contact between the pad and the unwinding roller, achieving stepless adjustment of tension to accommodate film rolls of different materials. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the structure of the unwinding assembly of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the external expansion component of this utility model;

[0019] Figure 5 This is a schematic diagram of the assembly of the external expansion component and the control component of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the control component of this utility model.

[0021] In the diagram: 1. Base plate; 2. Lifting assembly; 21. Lifting frame; 22. Electric push rod; 23. Drive frame; 3. Winding ring; 4. Roll material support unit; 5. Hollow shaft; 6. Unwinding assembly; 61. Unwinding roller; 62. Fixed ring; 63. Movable ring; 7. Pad; 8. Outer expansion assembly; 81. First wedge block; 82. Outer expansion plate; 9. Control assembly; 91. Knob; 92. Threaded column; 93. Fixed shaft; 94. Second wedge block. Detailed Implementation

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, in part of which will be obvious from the description or may be learned by practice of the invention.

[0024] like Figures 1 to 6As shown, a vertical packaging machine for rolls includes a base plate 1. A roll support unit 4 for driving the roll to rotate and a lifting assembly 2 for adjusting the winding height are fixedly mounted on the base plate 1. A winding ring 3 for rotating and winding the packaging film is installed on the lifting assembly 2. A hollow shaft 5 is fixedly mounted on the winding ring 3. An unwinding assembly 6 for clamping and fixing the film roll and supporting its unwinding is installed on the outside of the hollow shaft 5. A pad 7 is fitted in the middle section of the hollow shaft 5. Multiple outward expansion components 8 for pushing the pad 7 outward are evenly installed around the circumference of the hollow shaft 5. A control assembly 9 for pushing the outward expansion components 8 outward is provided inside the hollow shaft 5. In use, the roll is first placed on the roll support unit 4 supported by the base plate 1, and then the lifting assembly 2 controls the winding height. The winding ring 3 descends until it reaches the top of the roll. Then, the film roll is fixed on the unwinding assembly 6, and the winding ring 3 rotates, causing the film roll on the unwinding assembly 6 to rotate around the roll, thus performing wrapping. During the packaging process, as the packaging film wraps around the surface of the roll, the film roll is pulled and causes the unwinding assembly 6 to rotate around the hollow shaft 5. At this time, the pad 7 contacts the unwinding assembly 6, providing resistance to the rotation of the unwinding assembly 6, ensuring that the packaging film is always taut, providing stable tension for the unwinding of the film roll, and improving the stability of packaging quality. At the same time, the outer expansion assembly 8 can be driven by the control assembly 9 to support the pad 7, thereby increasing the tightness of the contact between the pad 7 and the unwinding assembly 6, increasing the tension, and adapting to film rolls of different materials.

[0025] like Figure 1 As shown, the lifting assembly 2 includes a lifting frame 21 fixed on the base plate 1. An electric push rod 22 is fixedly provided at the bottom of the lifting frame 21. The output end of the electric push rod 22 passes through the lifting frame 21 downward and is fixedly provided with a drive frame 23 for driving the winding ring 3 to rotate. The drive frame 23 is slidably connected to the lifting frame 21. The lifting frame 21 supports the electric push rod 22, so that it extends to control the drive frame 23 to drive the winding ring 3 downward until the winding ring 3 drops to the top of the roll material. At this time, the drive frame 23 drives the winding ring 3 to rotate and wrap the roll material.

[0026] like Figure 3 As shown, the unwinding assembly 6 includes an unwinding roller 61 rotatably mounted outside the hollow shaft 5. A fixed ring 62 is fixedly provided at one end of the unwinding roller 61 near the winding ring 3, and a movable ring 63 is threadedly installed at the other end of the unwinding roller 61 away from the winding ring 3. The fixed ring 62 and the movable ring 63 are both tapered on opposite sides. The movable ring 63 is unscrewed, the film roll is placed on the unwinding roller 61 and one end of it is pressed against the fixed ring 62. Then the movable ring 63 is tightened again. The film roll is clamped and fixed by the engagement of the movable ring 63 and the tapered surface on the fixed ring 62. The two tapered surfaces engage to achieve bidirectional clamping, which can accommodate film rolls of different widths and inner diameters.

[0027] like Figures 3 to 5As shown, the expansion assembly 8 includes a first wedge block 81 that is radially slidably installed in the middle section of the hollow shaft 5. An expansion plate 82 is fixedly provided at one end of the first wedge block 81 near the pad 7. The expansion plate 82 is arc-shaped and fits the inner wall of the pad 7. The control assembly 9 pushes the first wedge block 81 to drive the expansion plate 82 to support the pad 7, thereby increasing the tightness of the contact between the pad 7 and the unwinding roller 61, increasing the tension, and adapting to film rolls of different materials.

[0028] like Figures 3 to 6 As shown, the control component 9 includes a threaded post 92 that is axially threaded inside the hollow shaft 5. One end of the threaded post 92 away from the winding ring 3 extends to the outside of the hollow shaft 5 and is fixedly provided with a knob 91. The other end of the threaded post 92 away from the knob 91 is fixedly provided with a fixed shaft 93. The fixed shaft 93 is fixedly provided with a second wedge block 94 that cooperates with the first wedge block 81 at the position corresponding to the first wedge block 81. The knob 91 drives the threaded post 92 to rotate, so that the threaded post 92 pushes the second wedge block 94 to move deeper into the hollow shaft 5 through the fixed shaft 93. Then, the second wedge block 94 pushes the first wedge block 81, which drives the outer expansion plate 82 to support the outer sleeve 7, thereby improving the tightness of the contact between the sleeve 7 and the unwinding roller 61, increasing the tension, and adapting to film rolls of different materials.

[0029] The work process is as follows:

[0030] S1: As Figure 1 As shown, when in use, the roll material is first placed on the roll material support unit 4 supported by the base plate 1, and then the lifting frame 21 is activated to support the electric push rod 22, so that it extends to control the drive frame 23 to drive the winding ring 3 downward until the winding ring 3 descends to the top of the roll material.

[0031] S2: As Figure 2 and Figure 3 As shown, then unscrew the movable ring 63, put the film roll on the unwinding roller 61 and make one end of it press against the fixed ring 62. Then tighten the movable ring 63 again. The film roll is clamped and fixed by the cooperation of the movable ring 63 and the conical surface on the fixed ring 62. The two conical surfaces cooperate to achieve bidirectional clamping, which can adapt to film rolls of different widths and inner diameters.

[0032] S3: As Figure 1 and Figure 2 As shown, after the above preparations are completed, the drive frame 23 drives the winding ring 3 to rotate, which in turn drives the film winding roll on the unwinding roller 61 to rotate, thereby performing winding and packaging.

[0033] S4: As Figures 1 to 3 As shown, during the packaging process, as the packaging film is wound around the surface of the roll, the film roll is pulled and drives the unwinding roller 61 to rotate around the hollow shaft 5.

[0034] S5: As Figure 3 and Figure 4As shown, at this time, the pad 7 is in contact with the unwinding roller 61, providing resistance to the rotation of the unwinding roller 61, ensuring that the packaging film is always in a taut state, providing stable tension for unwinding the film roll, and improving the stability of packaging quality.

[0035] S6: As Figures 3 to 6 As shown, the screw thread 92 can be rotated by the knob 91, so that the screw thread 92 pushes the second wedge block 94 into the hollow shaft 5 through the fixed shaft 93. Then the second wedge block 94 pushes the first wedge block 81, which drives the outer expansion plate 82 to support the outer sleeve 7, thereby increasing the tightness of the contact between the sleeve 7 and the unwinding roller 61, increasing the tension, and adapting to film rolls of different materials.

[0036] The roll material support unit 4, electric push rod 22 and drive frame 23 in this application are known technologies in this field, therefore their specific structures and working principles are not described in detail.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A vertical packaging machine for material rolls, characterized in that: The device includes a base plate (1), on which a roll support unit (4) for driving the roll to rotate and a lifting assembly (2) for adjusting the winding height are fixedly mounted. A winding ring (3) for rotating and winding the packaging film is mounted on the lifting assembly (2). A hollow shaft (5) is fixedly mounted on the winding ring (3). An unwinding assembly (6) for clamping and fixing the film roll and supporting its unwinding is mounted on the outside of the hollow shaft (5). A pad (7) is sleeved in the middle section of the hollow shaft (5). Multiple expansion assemblies (8) for pushing the pad (7) outward are evenly mounted on the circumference of the hollow shaft (5). A control assembly (9) for pushing the expansion assembly (8) outward is provided inside the hollow shaft (5).

2. The vertical packaging machine for material rolls according to claim 1, characterized in that: The expansion assembly (8) includes a first wedge block (81) that is radially slidably mounted on the middle section of the hollow shaft (5), and an expansion plate (82) is fixedly provided at one end of the first wedge block (81) near the pad (7).

3. A vertical packaging machine for material rolls according to claim 2, characterized in that: The control component (9) includes a threaded post (92) that is threaded along the axial direction inside the hollow shaft (5). One end of the threaded post (92) away from the winding ring (3) extends to the outside of the hollow shaft (5) and is fixedly provided with a knob (91). One end of the threaded post (92) away from the knob (91) is fixedly provided with a fixed shaft (93). The fixed shaft (93) is fixedly provided with a second wedge block (94) corresponding to the position of the first wedge block (81).

4. A vertical packaging machine for material rolls according to claim 3, characterized in that: The outer expansion plate (82) is arc-shaped and fits the inner wall of the pad (7).

5. A vertical packaging machine for material rolls according to claim 1, characterized in that: The unwinding assembly (6) includes an unwinding roller (61) rotatably mounted outside the hollow shaft (5). A fixed ring (62) is fixedly provided at one end of the unwinding roller (61) near the winding ring (3), and a movable ring (63) is threadedly installed at the other end of the unwinding roller (61) away from the winding ring (3).

6. A vertical packaging machine for material rolls according to claim 1, characterized in that: The lifting assembly (2) includes a lifting frame (21) fixed on the base plate (1). An electric push rod (22) is fixedly provided at the bottom of the lifting frame (21). The output end of the electric push rod (22) passes through the lifting frame (21) downward and is fixedly provided with a drive frame (23) for driving the winding ring (3) to rotate. The drive frame (23) is slidably connected to the lifting frame (21).

7. A vertical packaging machine for material rolls according to claim 5, characterized in that: The fixed ring (62) and the movable ring (63) are both tapered on opposite sides.

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