Film tail cutting, clamping and knotting device after film winding of rocker arm type winding machine

Abstract

The invention discloses a rocker arm type winding machine film winding end film tail cutting, clamping and knotting device which comprises a rack, a main swing arm, a main swing arm driving air cylinder, an auxiliary swing arm, an auxiliary swing arm driving air cylinder, an electromagnetic valve set and a film blowing spray pipe. The main swing arm driving air cylinder drives the main swing arm to enable the main swing arm to be switched between the horizontal state and the vertical state. The bottom of the auxiliary swing arm is connected with the rack, and the auxiliary swing arm driving air cylinder drives the auxiliary swing arm to be switched between the horizontal state and the vertical state. After the auxiliary swing arm is vertical, a gap between a winding film and goods is pulled out, a clamping block on the main swing arm pulls the film into a ball and clamps the film, a clamping jaw on the other side of the main swing arm clamps the film, a cutter on the main swing arm cuts off the film, and the clamping jaw on the main swing arm plugs the tail of the film into the gap to achieve the knotting effect. According to the implementation mode, the film tail is efficiently and stably wrapped in the wrapping film, high-temperature film breaking and film ironing are not needed, and influences on the environment and operators are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of rocker arm wrapping machines, in particular to a device for cutting, clamping and knotting a film tail at the end of film wrapping of a rocker arm wrapping machine. Background Art

[0002] The swing arm wrapping machine is a device that pulls out the film from the wrapping film roll and rotates it around the goods so that the film wraps the goods. According to the way the film frame moves relative to the goods, the wrapping machine can be divided into a swing arm wrapping machine, a turntable wrapping machine, and a swivel wrapping machine. In the swing arm wrapping machine, the film roll is placed on the film frame. When the film frame rotates relative to the goods, the film frame can move up and down, so that all positions of the goods can be wrapped by the wrapping film. After the wrapping film is wrapped on the goods, it is necessary to rely on one or more devices to complete the actions of cutting the film, clamping one end of the film, and sealing the other end of the film. According to the existing film cutting form, most of them use steel wire heating and melting, which has strict requirements on the fit between the wrapping film and the steel wire. In addition, the wrapping film is not only easy to adhere to the steel wire, but also produces smoke and odor. At the same time, the high temperature is easy to damage the goods. According to the existing sealing film form, one is to use high-temperature heating metal parts to heat the film tail and the film wrapped on the goods together. The long-term high temperature of this metal part affects safety, and cutting the hot film will also produce smoke and odor. The other method is to use a cylinder to push a cantilever equipped with a brush or rubber plate to sweep the surface of the goods, so that the film tail adheres to the goods by adhesion. The pasted film tail will fall off after long-term storage.

[0003] The Chinese patent with the authorization announcement number CN 221874426 U discloses a film clamping, film cutting and film welding mechanism, including a film clamping assembly, a baffle assembly and a welding and film cutting assembly. The two clamping blocks in the film clamping assembly are driven by a cylinder to clamp the wrapping film, the baffle is set vertically by a cylinder, and the welding film plate in the welding and film cutting assembly is driven by a cylinder to be close to the baffle. At the same time, the film cutting heating wire will be close to the wrapping film, and the wrapping film will be melted by the heating of the heating wire. This solution cuts and welds the film by heating, which has the risk of high temperature and smoke and odor. The heating wire film cutting requires that the heating wire and the wrapping film are in close contact, otherwise the film in some parts will not be melted. The various components of this solution are set independently, and the equipment space occupied is relatively large.

[0004] The Chinese patent with the authorization announcement number CN 218907880 U discloses a new type of pneumatic film-cutting rocker-type wrapping machine, which includes a base and a column. A film clamping mechanism is arranged on one side of the base. The film clamping mechanism includes a welding part and a shell. A film clamping cylinder is installed on the welding part. The film clamping cylinder drives two groups of clamping blocks to clamp the wrapping film. A film-cutting mechanism is arranged on one side of the base. A connecting plate and a rotating swing arm are arranged on the film-cutting mechanism. A heating wire and a sponge pad are arranged on the rotating arm. After the wrapping is completed, the heating wire on the film-cutting mechanism heats and melts the wrapping film. The sponge pad on the film-cutting mechanism is used to stick the tail of the wrapping film after the film is cut to the goods. This method relies on the self-adhesiveness of the wrapping film, has certain requirements on the quality of the wrapping film, and cannot guarantee that the film will fall off naturally after the goods are stored for a long time. Summary of the invention

[0005] The purpose of the present invention is to provide a device for processing the film tail after the goods are wrapped by a rocker-type wrapping machine, so as to solve the problems existing in the above-mentioned prior art. By pulling the film tail into a ball and then cutting it with a knife, the safety hazard caused by high temperature can be avoided, and the influence of smoke and odor on the environment can be avoided. The film tail is stuffed into the wrapped wrapping film of the previous layer to form a knotting effect, which avoids high temperature damage to the goods and also saves the baffle device. At the same time, the film clamping, film cutting and knotting processes are realized on one device, so that the space occupied is more compact while ensuring the function.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a film tail processing device for a rocker-type winding machine, comprising a frame, a main swing arm, a main swing arm driving cylinder, a secondary swing arm, a secondary swing arm driving cylinder, and a solenoid valve group. The bottom of the main swing arm is connected to the frame through a shaft, one side of the main swing arm is connected to the frame through the main swing arm driving cylinder, and the main swing arm driving cylinder drives the main swing arm to switch between a horizontal state and a vertical state. The bottom of the secondary swing arm is connected to the frame through a shaft, one side of the secondary swing arm is connected to the frame through the secondary swing arm driving cylinder, and the secondary swing arm driving cylinder drives the secondary swing arm to switch between a horizontal state and a vertical state.

[0008] Preferably, the main swing arm is provided with a film clamping cylinder parallel to the swing arm, and a clamping block is installed on the film clamping cylinder, and the clamping block is used to pull the film into a ball and clamp it.

[0009] Preferably, a cutter cylinder is arranged on the outer side of the main swing arm, and a cutter is installed at the end of the cutter cylinder, and the cutter is used to cut the film.

[0010] Preferably, a push-pull cylinder is provided inside the main swing arm, and a sliding frame is provided at the end of the telescopic cylinder. The sliding frame is connected to the inner side of the main swing arm through a slide rail, and the sliding frame can be extended and retracted from the main swing arm through the motion guidance of the slide rail and the drive of the push-pull cylinder.

[0011] Preferably, a push cylinder is arranged on the top of the sliding frame, a bracket is arranged on the end of the push cylinder, the bracket is connected to the top of the main swing arm through a slide rail, and the bracket can be pushed out of the sliding frame through the motion guidance of the slide rail and the drive of the push cylinder.

[0012] Preferably, a clamping jaw assembly is arranged on the lower side of the bracket, and the clamping jaw assembly comprises a clamping jaw cylinder. A clamping jaw is arranged at the end of the clamping jaw cylinder, and the clamping jaw is used to clamp the membrane mass.

[0013] Preferably, the auxiliary swing arm is composed of a cylinder, a telescopic cylinder is arranged inside the auxiliary swing arm, a column is arranged at the end of the telescopic cylinder, and the column is driven by the telescopic cylinder to extend and retract the cylinder.

[0014] Preferably, the cutter is located between the clamp block and the clamp jaws, the clamp block pulls and clamps the stretch film, the clamp jaws clamp the other side of the stretch film, the cutter cuts the film ball, and the clamp jaws insert the cut stretch film tail into the previous circle of wrapped film.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] (1) The present invention processes the film tail by inserting the film tail into the film wrapped in the previous circle to form a knotted effect. It does not need to use high temperature hot film, and does not need to use sponge pads to stick the film tail, thereby avoiding the adverse effects of high temperature on the environment and people. The film tail will not fall off when the goods are stored for a long time, and there is no need to set a baffle to prevent the goods from being scalded.

[0017] (2) The present invention uses a cutter to cut the film, and does not need to use an electric heating wire to generate a high temperature to melt the film, thereby avoiding the adverse effects of high temperature on the environment and people. The film is pulled into a ball and then cut off with a high success rate, and the problem of the film not being melted due to insufficient adhesion between the heating wire and the film will not occur.

[0018] (3) The present invention integrates the film cutting, film clamping and knotting, which reduces the space occupied by the device, simplifies the structure and improves the stability and maintainability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is the overall structure diagram of the present invention;

[0021] Figure 2 for Figure 1 Exploded structure diagram;

[0022] Figure 3 for Figure 1 Exploded structure diagram of middle component 2;

[0023] Figure 4 for Figure 1 Exploded structure diagram of middle component 4;

[0024] Figure 5 It is the working state diagram of the present invention;

[0025] Figure 6 It is the working state diagram of the present invention;

[0026] Figure 7 This is a working state diagram of the present invention.

[0027] Among them, 1. frame; 2. main swing arm; 3. main swing arm driving cylinder; 4. auxiliary swing arm; 5. auxiliary swing arm driving cylinder; 6. film blowing nozzle; 7. solenoid valve group; 201. main swing arm body; 202. film clamping cylinder; 203. clamping block; 203. cable guide assembly; 205. slide rail; 206. sliding frame; 207. push cylinder; 208. side slide rail; 209. bracket; 211. clamping claw cylinder; 212. clamping claw; 213. cover plate; 214. cutter cylinder; 215. cutter; 216. push-pull cylinder; 401. cylinder; 402. telescopic cylinder; 403. inner cylinder; 404. drum base; 405. drum. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide a device for processing the film tail after the goods are wrapped by a rocker-type wrapping machine, so as to solve the problems existing in the prior art. The film is pulled into a ball, clamped at two places and cut from the middle with a knife, and the film tail is inserted into the upper layer of wrapped wrapping film to form a knot effect. Without adding a baffle to prevent scalding of goods, it is ensured that the goods are not damaged and the film tail will not fall off.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 4 As shown, the present invention provides a film tail processing device for a rocker-type wrapping machine after the goods are wrapped, comprising a frame 1, a main swing arm 2, a main swing arm driving cylinder 3, an auxiliary swing arm 4, an auxiliary swing arm driving cylinder 5, a film blowing nozzle 6, and a solenoid valve group 7. The film cutting, film clamping, knotting and other device structures are highly integrated, compact, and occupy a small space.

[0032] like Figure 1 , 2 As shown, the frame 1 as the main supporting and bearing structure can adopt a beam-column structure and be fixed on the foundation ground by expansion bolts or anchor bolts to ensure the stability of the frame 1.

[0033] like Figure 1 , 2 As shown in Figure 4, the auxiliary swing arm 4 is a film-blocking structure that can rotate on the frame 1 and switch between a horizontal state and a vertical state. Specifically, the bottom of the auxiliary swing arm 4 is connected to the frame 1 through a pin shaft, and a part of the auxiliary swing arm 4 body is connected to the frame 1 through an auxiliary swing arm driving cylinder 5. The auxiliary swing arm 4 body is composed of a cylinder 401, a telescopic cylinder 402, an inner cylinder 403, a rotating drum base 404, and a rotating drum 405. The rotating drum 405 can rotate freely around the rotating drum base 404, and the telescopic cylinder 402 can drive the inner cylinder 403, the rotating drum base 404 and the rotating drum 405 to enter and exit the cylinder 401.

[0034] like Figures 1 to 3As shown, the main swing arm 2, as the main structure for film clamping and film cutting, can rotate on the frame 1 and switch between the horizontal state and the vertical state. Specifically, a place on the main swing arm 2 body is connected to the frame 1 through the main swing arm driving cylinder 3, and the main swing arm 2 is provided with a film clamping cylinder 202 parallel to the swing arm, and a clamping block 203 is provided on the film clamping cylinder 202. A cutting cylinder 214 is provided on the outside of the main swing arm 2, and a cutting knife 215 is installed at the end of the cutting cylinder 214. The cover plate 213 is used for safety protection, and the cutting knife 215 is used to cut the film. A push-pull cylinder 216 is provided inside the main swing arm 2, and a sliding frame 206 is provided at the end of the push-pull cylinder 216. The sliding frame 206 is connected to the inner side of the main swing arm body 201 through a slide rail 205. A horizontal push cylinder 207 is arranged on the top of the sliding frame 206, and a bracket 209 is arranged at the end of the horizontal push cylinder 207. The bracket 209 is connected to the top of the sliding frame 206 through a slide rail 208. A clamp body 210 is arranged on the lower side of the bracket 209, and a clamp cylinder 211 is arranged inside the clamp body 210. A clamp 212 is arranged at the end of the clamp cylinder 211, and the clamp 212 is used to clamp the film group. The cable guide assembly 204 is used to guide the horizontal and vertical movements of the cable.

[0035] like Figures 1 to 3 As shown, the film blowing nozzle 6 is arranged on the frame 1, and is used to blow up the film head after the clamp block 203 releases the film head at the beginning of winding, so as to wrap the film head during the film winding process. The electromagnetic valve group 7 is arranged on the frame 1, and is used to control the movement of all cylinders in the present invention and high-pressure jet.

[0036] like Figures 1 to 7As shown, in actual work, there is a certain distance between the auxiliary swing arm 4 and the goods. Before the rocker-type wrapping machine wraps the goods with the last circle of film, the auxiliary swing arm 4 turns from a horizontal state to a vertical state, and the inner cylinder 403, the drum base 404, and the drum 405 extend out of the cylinder 401 to form a longer column state. The last circle of film is wrapped inside the auxiliary swing arm 4, so that a gap is reserved between the last circle of film and the goods. After the rocker-type wrapping machine finishes wrapping the goods with film, the push-pull cylinder 216 pushes out the sliding frame 206, the main swing arm 2 turns from a horizontal state to a vertical state, the film clamping cylinder 202 drives the clamping block 203 and the main swing arm 2 to close, thereby clamping the wrapping film, the push-pull cylinder 216 pulls back the sliding frame 206, and the clamping claw 212 pulls the film into a ball and clamps it, the push-pull cylinder 216 pushes out the sliding frame 206 again, and the cutter 215 cuts the film, and the horizontal push cylinder 207 pushes out the bracket 209, The push-pull cylinder 216 pulls back the sliding frame 206 again, and the clamp 212 stuffs the film tail into the reserved gap between the last circle of film and the goods. The push-pull cylinder 216 pushes out the sliding frame 206 for the third time. At the same time, the nozzle 217 sprays high-pressure air to prevent the clamp 212 from bringing out the film tail when retreating. The horizontal push cylinder 207 pulls back the bracket 209, and the push-pull cylinder 216 pulls back the sliding frame 206 for the third time. The main swing arm 2 turns from the vertical state to the horizontal state, and the auxiliary swing arm 4 turns from the vertical state to the horizontal state.

[0037] The present invention uses a cutting knife to cut the film instead of the existing heating wire cutting method, and will not cause the film to not be cut at some point due to insufficient adhesion between the heating wire and the film, and has high efficiency. The present invention uses a plugging film knotting method to replace the existing high-temperature hot film tail pasting method, which will not produce smoke to affect the environment, and there is no risk of high-position burns, and has high safety. The present invention uses a knotting method to ensure that the film tail will not fall off when the goods are stored for a long time, and has high stability.

[0038] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for cutting, clamping and knotting the film tail of a rocker-type winding machine at the end of film wrapping, characterized in that: The invention comprises a frame (1), a main swing arm (2), a main swing arm driving cylinder (3), a secondary swing arm (4), a secondary swing arm driving cylinder (5), a solenoid valve group (7), and a film blowing nozzle (6). The bottom of the main swing arm (2) is connected to the frame (1) via a shaft, and one side of the main swing arm (2) is connected to the frame (1) via the main swing arm (2) driving cylinder. The bottom of the secondary swing arm (4) is connected to the frame (1) via a shaft, and one side of the secondary swing arm (4) is connected to the frame (1) via the secondary swing arm driving cylinder (5).

2. The device for cutting, clamping and knotting the film tail of the rocker-type winding machine at the end of film wrapping according to claim 1 is characterized in that: The main swing arm (2) is provided with a film clamping cylinder (202), and a clamping block (203) is installed on the film clamping cylinder (202).

3. The device for cutting, clamping and knotting the film tail of the rocker-type winding machine at the end of film wrapping according to claim 1 is characterized in that: The outer wall of the main swing arm (2) is provided with a cutter cylinder (214), the end of the cutter cylinder (214) is fixedly connected with a cutter (215), and the outer wall of the cutter cylinder (214) is clamped with a cover plate (213).

4. The device for cutting, clamping and knotting the film tail of the rocker-type winding machine at the end of film wrapping according to claim 1 is characterized in that: The main swing arm (2) comprises a main swing arm body (201), a push-pull cylinder (216) is arranged inside the main swing arm (2), a sliding frame (206) is arranged at the end of the push-pull cylinder (216), the outer wall of the sliding frame 206 is fixedly connected with a sliding rail (205), and the sliding rail (205) is slidably connected to the inner side of the main swing arm (2).

5. The device for cutting, clamping and knotting the film tail of the rocker-type winding machine at the end of film wrapping according to claim 4, characterized in that: A horizontal push cylinder (207) is arranged on the top of the sliding frame 206, and a bracket (209) is arranged at the end of the horizontal push cylinder 207.

6. The device for cutting, clamping and knotting the film tail of the rocker-type winding machine at the end of film wrapping according to claim 5, characterized in that: The outer wall of the bracket (209) is fixedly connected to a side slide rail (208), and the side slide rail (208) is slidably connected to the top of the sliding frame 206. A clamp body (210) is arranged below the bracket (209), a clamp cylinder (211) is arranged inside the clamp body (210), and a clamp (212) is arranged at the end of the clamp cylinder (211). The outer wall of the bracket (209) is provided with a cable guide assembly (204).

7. The device for cutting, clamping and knotting the film tail of the rocker-type wrapping machine at the end of film wrapping according to claim 1, characterized in that: The auxiliary swing arm (4) comprises a cylinder (401), a telescopic cylinder (402), an inner cylinder (403), a rotating cylinder base (404) and a rotating cylinder (405).

8. The device for cutting, clamping and knotting the film tail of the rocker-type winding machine at the end of film wrapping according to claim 1, characterized in that: A group of film blowing nozzles (6) are installed on the frame (1), and high-pressure airflow is ejected from the film blowing nozzles (6).

9. The device for cutting, clamping and knotting the film tail of the rocker-type wrapping machine at the end of film wrapping according to claim 1, characterized in that: The electromagnetic valve group (7) is installed on the frame (1), and the electromagnetic valve group (7) controls the movement of all cylinders.

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