Bilateral alignment device for cold stretching film sleeving machine

Abstract

The utility model relates to a double-side aligning device for a cold stretching film sleeving machine, which comprises four groups of film clamping parts and at least one group of lifting parts, the lifting parts are used for adjusting the height positions of the four groups of film clamping parts, the double-side aligning device further comprises four groups of translation parts, every two adjacent groups of film clamping parts are connected through one group of translation parts, and the lifting parts are used for adjusting the height positions of the four groups of film clamping parts. The four translation parts are used for adjusting the position states of the four film clamping parts on the horizontal plane, each translation part comprises a sleeve and two sliding rods, a connecting pipe communicated with an inner cavity of the sleeve is formed in the middle section of the sleeve, the end, back to the sleeve, of the connecting pipe is connected with an external pump body, and openings are formed in the two ends of the sleeve. Through cooperative arrangement of the translation part and the film clamping part, positioning and stretching adjustment of the film body can be carried out according to the size of an object to be packaged when the film body is stretched and sleeved with the film, so that the film body can be better matched with the object to be packaged, the outer side of the object to be packaged is stably wrapped, and the film sleeving packaging quality and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of film-coating machine technology, specifically to a double-sided alignment device for a cold stretch film-coating machine. Background Technology

[0002] The cold stretch film sleeve machine is a specialized piece of equipment that automatically bags palletized goods using cold stretch film. Its principle is to automatically extract a film of the appropriate height from a roll of cold stretch film, and then heat-seal and cut it from both sides at the top to form a bag. The stretching arms simultaneously stretch the film from four directions and bag it from top to bottom. Relying on the inherent properties of the cold stretch film, the bag retracts onto the tray, forming a five-sided, waterproof, moisture-proof, and securely packed package.

[0003] Existing fully automatic cold stretch film forming machines generally adopt a fixed film-fitting mechanism. This structure cannot adapt to the processing requirements of different product sizes when making different products, resulting in low production efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This invention provides a double-sided alignment device for a cold stretch film forming machine, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a double-sided alignment device for a cold stretching film-coating machine, comprising four sets of clamping parts and at least one set of lifting parts. The lifting parts are used to adjust the height position of the four sets of clamping parts. It also includes four sets of translation parts, with each pair of adjacent clamping parts connected by a translation part. The four translation parts are used to adjust the position of the four sets of clamping parts on a horizontal plane. Each translation part includes a sleeve and two sliding rods. The middle section of the sleeve forms a connecting pipe communicating with the inner cavity of the sleeve. One end of the connecting pipe facing away from the sleeve is connected to an external pump body. Both ends of the sleeve have openings. The two sliding rods are slidably connected to the sleeve and respectively extend through the two openings of the sleeve. The opposite ends of the two sliding rods are rotatably connected to adjacent clamping parts. Changes in pressure within the inner cavity of the sleeve can adjust the movement of the two sliding rods.

[0008] Preferably, the end of the slide rod located in the inner cavity of the sleeve has a piston section, the cross-sectional diameter of which is adapted to the diameter of the inner cavity of the sleeve, and the end of the slide rod located outside the inner cavity of the sleeve has a connecting section that mates with the clamping part. The diameter of the slide rod is smaller than the inner diameter of the sleeve, the width of the connecting section is larger than the inner diameter of the sleeve, and the length of the slide rod is less than half the length of the sleeve.

[0009] In a further preferred embodiment, the membrane clamping section includes a support, a slider, a membrane clamping base plate, a membrane clamping top plate, two first hangers, two connecting frames, a second linear drive source, two second hangers, and a movable seat. Both sliders are slidably connected to the support, and the membrane clamping base plate and membrane clamping top plate are respectively installed at adjacent ends of the two sliders. The two first hangers are symmetrically rotatably connected to opposite sides of the two sliders, and the two first hangers are also rotatably connected to two symmetrical connecting frames. The output end and the side of the second linear drive source facing away from its output end are rotatably connected to the two connecting frames. A guide post is formed on the side of the support facing away from the slider, and the movable seat is slidably sleeved on the guide post. The opposite sides of the movable seat are rotatably connected to the two second hangers, and the two second hangers are also symmetrically rotatably connected to the two connecting frames. Mounting frames are also formed on opposite sides of the movable seat, and the mounting frames are rotatably connected to adjacent connecting sections via pins.

[0010] In a further preferred embodiment, the lifting part is configured as a ball screw structure driven by a motor, and the bracket is mounted and fixed on the lead screw seat of the ball screw structure, so that the height position can be adjusted by the transmission cooperation between the lead screw and the lead screw.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, this utility model provides a double-sided alignment device for a cold stretch film forming machine, which has the following advantages:

[0013] In this invention, the cooperative arrangement of the translation part and the clamping part allows the film to be positioned and stretched according to the size of the item to be packaged when the film is stretched and wrapped, so that the film can better fit the item to be packaged and wrap its outer side securely, thereby improving the quality and efficiency of the film packaging. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the double-sided alignment device for a cold stretch film forming machine according to the implementation plan;

[0015] Figure 2 This is a schematic diagram of the connection structure between the membrane clamping part and the translation part according to the implementation plan;

[0016] Figure 3 This is a schematic diagram of the structure after the translation section is cut open according to the implementation plan.

[0017] In the figure: 10, membrane clamping section; 11, bracket; 111, guide post; 112, mounting bracket; 12, slider; 13, membrane clamping bottom plate; 14, membrane clamping top plate; 141, base plate; 142, movable plate; 143, lifting lug; 144, first linear drive source; 15, first lifting rod; 16, connecting frame; 161, first connecting end; 162, second connecting end; 163, third connecting end; 17, second linear drive source; 18, second lifting rod; 19, movable seat; 20, lifting section; 30, translation section; 31, sleeve; 311, connecting pipe; 32, slide rod; 321, piston section; 322, connecting section. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1 to 3 A double-sided alignment device for a cold stretch film forming machine includes four sets of film clamping sections 10, at least one set of lifting sections 20, and four sets of translation sections 30. The lifting sections 20 are used to adjust the height position of the four sets of film clamping sections 10; each pair of adjacent sets of four sets of film clamping sections 10 is connected by a translation section 30, and the four sets of translation sections are used to adjust the position of the four sets of film clamping sections 10 on the horizontal plane.

[0020] In this embodiment, the lifting part 20 can adopt the existing ball screw structure driven by a motor, and the bracket 11 in the film clamping part 10 can be fixed to the lead seat of the ball screw structure by bolts, so that the height position of the film clamping part 10 can be adjusted by the transmission cooperation between the lead seat and the lead screw.

[0021] In this embodiment, the translation part 30 includes a sleeve 31 and two sliding rods 32. A connecting pipe 311 communicating with the inner cavity of the sleeve 31 is formed in the middle section of the sleeve 31. The end of the connecting pipe 311 facing away from the sleeve 31 is connected to an external pump body. The external pump body can inject or evacuate air into the sleeve 31, thereby creating a positive or negative pressure effect in its inner cavity. Openings are formed at both ends of the sleeve 31. The two sliding rods 32 are slidably connected to the sleeve 31 and respectively extend through the two openings of the sleeve 31. Pressure changes within the inner cavity of the sleeve 31 can cause the two sliding rods 32 to slide in opposite directions or towards each other. The opposite ends of the two slide rods 32 are rotatably connected to the adjacent clamping parts 10. The movement of the slide rods 32 can adjust the position of the clamping parts 10 connected to them. Under the drive of the four sets of translation parts 30, the four sets of clamping parts 10 can move outward or inward at the same time, thereby adjusting the size of the four sets of clamping parts 10, so that the membrane can be clamped and stretched.

[0022] In this embodiment, a piston section 321 is formed at one end of the slide rod 32 located inside the inner cavity of the sleeve 31, and the cross-sectional diameter of the piston section 321 is adapted to the inner cavity diameter of the sleeve 31. A connecting section 322 is formed at the other end of the slide rod 32 located outside the inner cavity of the sleeve 31, which mates with the clamping portion 10. The diameter of the slide rod 32 is smaller than the inner diameter of the sleeve 31, the width of the connecting section 322 is larger than the inner diameter of the sleeve 31, and the length of the slide rod 32 is less than half the length of the sleeve 31, so that the slide rod 32 can maintain a sliding connection with the sleeve 31.

[0023] In this embodiment, the membrane clamping section 10 may include a support 11, a slider 12, a membrane clamping base plate 13, a membrane clamping top plate 14, two first lifting rods 15, two connecting frames 16, a second linear drive source 17, two second lifting rods 18, and a movable seat 19. The support 11 is detachably fixedly connected to the movable end of the lifting section 20. Both sliders 12 are slidably connected to the support 11. The membrane clamping base plate 13 and the membrane clamping top plate 14 are respectively installed at adjacent ends of the two sliders 12. When stretching the membrane, the device can make one side of the membrane lie between the membrane clamping base plate 13 and the membrane clamping top plate 14, and use the membrane clamping base plate 13 and the membrane clamping top plate 14 to clamp the membrane, so that it can have a large contact area when stretching the membrane. The two first lifting rods 15 are symmetrically rotatably connected to the opposite sides of the two sliders 12, and the two first lifting rods 15 are also rotatably connected to the two symmetrical connecting frames 16. The output end of the second linear drive source 17 and the side facing away from its output end are rotatably connected to two connecting frames 16, respectively. The movable seat 19 is slidably mounted on the guide post 111. The opposite sides of the movable seat 19 are rotatably connected to two second hangers 18, which are also symmetrically rotatably connected to the two connecting frames 16. When the output end of the second linear drive source 17 moves telescopically, the action force and its own reaction force can be used to push the two connecting frames 16 to symmetrically deflect. When the connecting frame 16 deflects, the two first hangers 15 can be used to drive the two sliders 12 to slide towards or away from each other; and when the connecting frame 16 deflects, the two second hangers 18 can be used to drive the movable seat 19 to slide on the guide post 111. Mounting frames 112 are also formed on opposite sides of the movable seat 19, and the mounting frames 112 are rotatably connected to the adjacent connecting section 322 by a pin.

[0024] The system of the present invention may further include a control system for controlling the operation of the aforementioned motor, linear drive source, and external air pump to perform automatic operations of membrane stretching and membrane movement. It should be understood that the control system is not particularly limited and can be implemented using existing control techniques, which will not be elaborated upon here.

[0025] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-sided alignment device for a cold stretch film forming machine, comprising four sets of film clamping sections (10) and at least one set of lifting sections (20), wherein the lifting section (20) is used to adjust the height position of the four sets of film clamping sections (10), characterized in that, It also includes four sets of translation sections (30), with each pair of adjacent sets of the four sets of clamping sections (10) connected by a translation section (30). The four sets of translation sections are used to adjust the position of the four sets of clamping sections (10) on the horizontal plane. The translation part (30) includes a sleeve (31) and two slide rods (32). The middle section of the sleeve (31) has a connecting pipe (311) that communicates with the inner cavity of the sleeve (31). One end of the connecting pipe (311) facing away from the sleeve (31) is connected to an external pump body. Both ends of the sleeve (31) have openings. The two slide rods (32) are slidably connected to the sleeve (31) and pass through the two openings of the sleeve (31) respectively. The opposite ends of the two slide rods (32) are rotatably connected to the adjacent clamping part (10) respectively. The change in pressure in the inner cavity of the sleeve (31) can adjust the activity state of the two slide rods (32).

2. The bilateral alignment device for a cold stretch film forming machine according to claim 1, characterized in that: The slide rod (32) has a piston section (321) at one end located in the inner cavity of the sleeve (31). The cross-sectional diameter of the piston section (321) is adapted to the inner cavity diameter of the sleeve (31). The slide rod (32) has a connecting section (322) at one end located outside the inner cavity of the sleeve (31) that is connected to the clamping part (10).

3. The bilateral alignment device for a cold stretch film forming machine according to claim 2, characterized in that: The diameter of the slide rod (32) is smaller than the inner diameter of the sleeve (31), the width of the connecting section (322) is larger than the inner diameter of the sleeve (31), and the length of the slide rod (32) is less than half the length of the sleeve (31).

4. The bilateral alignment device for a cold stretch film forming machine according to claim 1, characterized in that: The membrane clamping section (10) includes a support (11), sliders (12), a membrane clamping base plate (13), a membrane clamping top plate (14), two first hangers (15), two connecting frames (16), a second linear drive source (17), two second hangers (18), and a movable seat (19). Both sliders (12) are slidably connected to the support (11), and the membrane clamping base plate (13) and membrane clamping top plate (14) are respectively installed at adjacent ends of the two sliders (12). The two first hangers (15) are symmetrically rotatably connected to the opposite sides of the two sliders (12), and... Furthermore, the two first rods (15) are rotatably connected to two symmetrical connecting frames (16), the output end of the second linear drive source (17) and the side facing away from its output end are rotatably connected to the two connecting frames (16), the bracket (11) has a guide post (111) on the side facing away from the slider (12), the movable seat (19) is slidably sleeved on the guide post (111), the opposite sides of the movable seat (19) are rotatably connected to the two second rods (18), and the two second rods (18) are symmetrically rotatably connected to the two connecting frames (16).

5. A double-sided alignment device for a cold stretch film forming machine according to claim 4, characterized in that: The movable seat (19) also has mounting brackets (112) on both sides opposite to each other. The mounting brackets (112) are rotatably connected to the adjacent connecting section (322) by means of pins.

6. A bilateral alignment device for a cold stretch film forming machine according to claim 4 or 5, characterized in that: The lifting part (20) is configured as a ball screw structure driven by a motor, and the bracket (11) is installed and fixed on the screw seat of the ball screw structure so that the height position can be adjusted by the transmission cooperation between the screw seat and the screw.

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