Double-film butt joint mechanism of strapping machine

Abstract

The utility model discloses a double-film butt-joint mechanism of a strapping machine, which comprises a case and a control system, and is characterized in that a first unwinding roller and a second unwinding roller which are distributed left and right are arranged on a front side panel of the case, and a first machine box, a second machine box and a third machine box which are positioned above the unwinding rollers and are distributed side by side at intervals; thin film unwinding channels are formed between the first machine box and the second machine box and between the second machine box and the third machine box respectively, film inlet guide rollers are arranged below the thin film unwinding channels respectively, and film outlet guide rollers with the left position and the right position capable of being switched are arranged above the thin film unwinding channels. The first machine box and the second machine box as well as the second machine box and the third machine box are internally provided with film welding and cutting mechanisms which are matched with each other respectively, and a film positioning structure is arranged below the second machine box. According to the utility model, double films are quickly butted for roll replacement, so that continuous unwinding of the films of the strapping machine is realized, and the efficiency is prevented from being influenced by roll replacement after shutdown.

Description

Technical Field

[0001] The utility model relates to an improved invention of a strapping machine, in particular to an improved invention of a double-film docking mechanism of a strapping machine. Background Art

[0002] A strapping machine is a packaging machine that uses films and other products to wind and package. The film is tightened on the surface of the product and the two ends are bonded together. When using a traditional strapping machine, it is necessary to pre-load the film reel, and after use, it is necessary to stop the machine to change the reel, resulting in a long downtime gap and affecting the strapping efficiency. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a double-film docking mechanism for a strapping machine that can change the reel without stopping the machine.

[0004] To solve the above technical problem, the utility model is implemented by adopting the following technical scheme: The double-film docking mechanism of the strapping machine includes a chassis and a control system, and is characterized in that: on the front panel of the chassis, a first film unwinding roller and a second film unwinding roller are arranged left and right, and a first machine box, a second machine box and a third machine box are arranged side by side and at intervals above the film unwinding rollers. A film unwinding channel is formed between the first machine box and the second machine box and between the second machine box and the third machine box respectively, and an inlet film guide roller is respectively arranged below the film unwinding channel, and an outlet film guide roller with a switchable left and right position is arranged above the film unwinding channel. A film welding and cutting mechanism that cooperates with each other is respectively arranged in the first machine box and the second machine box and between the second machine box and the third machine box, and a film positioning structure is arranged below the second machine box.

[0005] A guide groove is arranged on the front panel of the chassis, and the corresponding outlet film guide roller can be arranged to move left and right in the guide groove, and the inner end of the outlet film guide roller is connected with a driving structure.

[0006] A welding and cutting tool head and its driving cylinder are respectively arranged in the first machine box and the third machine box, and a cushion block corresponding to the first machine box and the third machine box and its driving cylinder are arranged in the second machine box.

[0007] The film positioning structure is a positioning clamp block arranged on the front panel of the chassis.

[0008] Two sets of the double-film docking mechanisms are arranged up and down and share the chassis.

[0009] The beneficial effect of the utility model is that the improved double-film docking mechanism of the strapping machine uses two film reels to switch and unwind the film, and uses a film welding and cutting mechanism for continuous connection, realizing continuous and uninterrupted unwinding, without the need to stop the machine to change the reel, and effectively improving the production efficiency. Description of the Drawings

[0010] The following further elaborates on the specific implementation manners of the present utility model in conjunction with the accompanying drawings.

[0011] Figure 1 It is a schematic structural diagram of the present utility model.

[0012] Figure 2 It is a three-dimensional structural diagram of the present utility model. Specific implementation manners

[0013] The accompanying drawings illustrate the structure of the present utility model, and the relevant details will be further described below in conjunction with the drawings. In this embodiment, referring to the attached Figure 1-2 , the double-film docking mechanism of this strapping machine includes a machine case 1 and a control system. The control system is a PLC control system. On the front side panel of the machine case 1, there are a first unwind roller 2 and a second unwind roller 3 arranged left and right, a first machine box 4, a second machine box 5, and a third machine box 6 arranged side by side and spaced apart above the unwind rollers. The first unwind roller 2 and the second unwind roller 3 are preferably air-expansion shafts. The first machine box 4, the second machine box 5, and the third machine box 6 are preferably square, and the first machine box 4 and the third machine box 6 are provided with heat dissipation holes. Film unwind channels are respectively formed between the first machine box 4 and the second machine box 5 and between the second machine box 5 and the third machine box 6, and film inlet guide rollers 7 are respectively arranged below the film unwind channels. An outlet film guide roller 8 with a switchable left and right position is arranged above the film unwind channels, that is, the outlet film guide roller 8 can be switched and used above the two film unwind channels. Film welding and cutting mechanisms that cooperate with each other are respectively arranged in the first machine box 4 and the second machine box 5 and between the second machine box 5 and the third machine box 6. A film positioning structure 9 is arranged below the second machine box 5.

[0014] The working principle of the present utility model is as follows: The first film unwound from the first unwinding roller 2 is guided by the corresponding film inlet guide roller 7 and enters the film unwinding channel between the first machine box 4 and the second machine box 5 from below, and then is guided by the film outlet guide roller 8 into the bundling station. At this time, the film outlet guide roller 8 is located above the film unwinding channel between the first machine box 4 and the second machine box 5. The second film unwound from the second unwinding roller 3 is guided by the corresponding film inlet guide roller 7 and enters the film unwinding channel between the second machine box 5 and the third machine box 6 from below, and then enters the film unwinding channel between the first machine box 4 and the second machine box 5 from above. The front end of the second film is fixed to the film positioning structure 9. When the first film unwound from the first unwinding roller 2 is used up, the film welding and cutting mechanism in the first machine box 4 and the second machine box 5 welds and cuts the first film and the second film, so that the second film continues to unwind after connecting with the first film. Correspondingly, the film outlet guide roller 8 moves to above the film unwinding channel between the second machine box 5 and the third machine box 6 to cooperate with the feeding of the second film to the bundling station. Thus, the roll change from the first film to the second film is completed. Similarly, for the roll change from the second film to the first film, the first film needs to be replenished in advance, and then the first film enters the film unwinding channel between the first machine box 4 and the second machine box 5 from below, and then enters the film unwinding channel between the second machine box 5 and the third machine box 6 from above. The front end of the first film is fixed to the film positioning structure 9. Among them, the roll change can be equipped with sensors for automatic monitoring or servo-set time, and is assisted by the control system to be completed manually.

[0015] As a further improved specific implementation manner, a guide groove 10 is provided on the front side panel of the chassis 1. The corresponding film outlet guide roller 8 is movably arranged left and right in the guide groove, and the inner end of the film outlet guide roller 8 is connected with a driving structure. Specifically, the inner end of the film outlet guide roller 8 is connected to a driving block, and the driving block is driven by the driving structure. The driving structure is preferably a cylinder or a motor.

[0016] As a further improved specific implementation manner, welding and cutting tool heads and their driving cylinders are respectively provided in the first machine box 4 and the third machine box 6. The second machine box 5 is provided with pads corresponding to the first machine box 4 and the third machine box 6 and their driving cylinders. The welding and cutting tool heads and the pads are respectively driven by the driving cylinders to move towards each other and approach for welding and cutting cooperation. Openings for the welding and cutting tool heads to extend are provided on the inner side walls of the corresponding first machine box 4 and the third machine box 6, and openings for the pads to extend are provided on both side walls of the second machine box 5.

[0017] As a further improved specific implementation manner, the film positioning structure 9 is a positioning clamp block arranged on the front side panel of the chassis 1, which is used for clamping and positioning the front end of the film to be unwound. Among them, the positioning clamp block can adopt a conventional structure with a clamping function such as an elastic clamp block or a screw-tightening clamp block.

[0018] As a specific implementation of further improvement, the double-film docking mechanism is provided with two sets, upper and lower, and shares the chassis 1, and they cooperate with each other to provide the film required for bundling for the bundling machine.

[0019] In summary, the above are only the preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Double-film docking mechanism for strapping machine, comprising a cabinet and a control system, characterized in that: On the front side panel of the chassis, there are a first unwind roller and a second unwind roller distributed left and right, a first machine box, a second machine box and a third machine box arranged side by side and spaced apart above the unwind rollers. A film unwind channel is formed between the first machine box and the second machine box and between the second machine box and the third machine box respectively. An inlet film guide roller is respectively arranged below the film unwind channel, and an outlet film guide roller with a switchable left and right position is arranged above the film unwind channel. A film welding and cutting mechanism that cooperates with each other is respectively arranged in the first machine box, the second machine box and the second machine box and the third machine box. A film positioning structure is arranged below the second machine box.

2. The double-film docking mechanism of the strapping machine according to claim 1, characterized in that: A guide groove is arranged on the front side panel of the chassis. The corresponding outlet film guide roller can be arranged to move left and right in the guide groove, and the inner end of the outlet film guide roller is connected with a driving structure.

3. The double-film docking mechanism of the strapping machine according to claim 1, characterized in that: A welding and cutting tool head and its driving cylinder are respectively arranged in the first machine box and the third machine box. A cushion block corresponding to the first machine box and the third machine box and its driving cylinder are arranged in the second machine box.

4. The double-film docking mechanism of the strapping machine according to claim 1, characterized in that: The film positioning structure is a positioning clamp block arranged on the front side panel of the chassis.

5. The double-film docking mechanism of the strapping machine according to claim 1, characterized in that: There are two sets of double-film docking mechanisms, which share the chassis.

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