Automatic film tearing device for metal strip

Abstract

The utility model discloses an automatic film tearing device for a metal material belt, which comprises a feeding machine and a film tearing device, a loading shaft is arranged on the feeding machine, the film tearing device comprises a film rolling seat, a winding rod, a tension adjusting mechanism and a feeding sensing mechanism, the tension adjusting mechanism and the feeding sensing mechanism are both arranged on the film rolling seat, and the loading shaft is arranged on the loading shaft. A winding motor is further mounted in the film winding seat, the winding rod is mounted on the upper portion of the base, the tail end of the winding rod extends into the film winding seat to be connected with the power output end of the winding motor, the tension adjusting mechanism is mounted below the winding rod, and the feeding sensing mechanism is in communication connection with the winding motor. And the sensing end of the feeding sensing mechanism is positioned on a path before the protective film of the metal strip passes through the tension adjusting mechanism. By means of the mode, the film tearing device can automatically execute the film tearing action along with the action of the feeding machine, the breakage phenomenon in the film tearing process is reduced, and the overall production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of metal processing, in particular to an automatic film tearing device for metal strip. Background Art

[0002] When the metal strip is wound, in order to prevent scratches on the surface due to friction between the surfaces of the strip, a protective film is covered on one side surface of the strip during the production process, and then wound. When in use, the required length is intercepted, the surface protective film is removed, and then processing is carried out. However, with the development of technology, current processing is mostly automated continuous processing. Therefore, a special device is required to synchronously remove the film when the feeder unwinds and feeds the strip. Generally, the film tearing machines on the market are developed based on the form of soft tape. Although they can complete the film tearing action, their structures are complex, and generally, the film is torn during the continuous feeding process. However, when the metal strip is fed, it is not continuously fed, but is fed intermittently according to the processing rhythm of the processing equipment. Therefore, the film winding and tearing action of the protective film also needs to be carried out intermittently according to the feeding rhythm. Otherwise, because the adhesion of the protective film on the metal strip is relatively large, the tearing action does not match the feeding frequency of the metal strip, and breakage problems often occur. Summary of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide an automatic film tearing device for metal strip, which can match the feeding rhythm of the metal strip during film tearing and reduce breakage problems.

[0004] To solve the above technical problem, a technical solution adopted by the utility model is: to provide an automatic film tearing device for metal strip, the automatic film tearing device for metal strip includes: a feeder and a film tearing device. A loading shaft is installed on the feeder, and the metal strip is wound into a coil and hung on the loading shaft. The loading shaft can rotate along with the movement of the metal strip. The film tearing device includes a film winding seat, a winding rod, a tension adjusting mechanism and a feeding induction mechanism. The tension adjusting mechanism and the feeding induction mechanism are both installed on the film winding seat. A winding motor is also installed in the film winding seat. The winding rod is installed on the upper part of the film winding seat. The tail end of the winding rod extends into the film winding seat and is connected to the power output end of the winding motor. The tension adjusting mechanism is installed below the winding rod. The feeding induction mechanism is communicatively connected with the winding motor. After the protective film on the metal strip is torn off, it is wound onto the winding rod through the tension adjusting mechanism. The sensing end of the feeding induction mechanism is located on the path of the protective film before passing through the tension adjusting mechanism.

[0005] In a preferred embodiment of the present utility model, the feeding induction mechanism includes a sensor bracket, a torque sensor, a connecting rod, and an induction head. The sensor bracket is installed on the back of the film winding base. The torque sensor is installed on the sensor bracket. One end of the connecting rod is connected to the torque sensor, and the other end is installed with the induction head. The induction head is rod-shaped and is located on the winding path of the protective film. The rod body is perpendicular to the moving direction of the protective film, and the length of the rod body is greater than the width of the protective film. The sensor bracket is a U-shaped bracket. The torque sensor is a disc-type torque sensor, and the disc-type torque sensor is sleeved on the cross bar of the U-shaped bracket.

[0006] In a preferred embodiment of the present utility model, the distance between the tension adjusting mechanism and the ground is less than the distance between the loading shaft and the ground.

[0007] In a preferred embodiment of the present utility model, the tension adjusting mechanism includes a limit groove, a tension adjusting rod, and a tension adjusting slider. The limit groove is opened on the front of the film winding base, and the direction is perpendicular to the horizontal plane. The tension adjusting slider is installed in the limit groove and can move vertically up and down along the limit groove. A spring is installed in the limit groove. The tail end of the spring abuts against the tension adjusting slider, and the top end abuts against the top of the limit groove. The rod body of the tension adjusting rod is parallel to the winding rod, and the tail end is fixed on the tension adjusting slider. There are two tension adjusting rods, namely an upper adjusting rod and a lower adjusting rod.

[0008] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple, the film tearing force is strong, it is easy to maintain, and it can match the rhythm of the feeding process of the metal strip. When the feeder executes the feeding action, it automatically starts to execute the film tearing action, and when the feeding action pauses, it automatically stops the film tearing action, integrating with the processing rhythm of the entire production line. It not only does not cause the problem of the protective film breaking, but also improves the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a three-dimensional structural schematic diagram of a preferred embodiment of the present utility model;

[0010] Figure 2 is an enlarged schematic diagram of a partial structure of the illustrated embodiment;

[0011] The marks of each component in the drawings are as follows:

[0012] 1. Metal strip, 2. Protective film, 3. Feeder, 4. Loading shaft, 5. Film winding base, 6. Winding rod, 7. Limit groove, 8. Tension adjusting rod, 9. Sensor bracket, 10. Torque sensor, 11. Connecting rod, 12. Induction head;

[0013] 801. Upper adjusting rod, 802. Lower adjusting rod. Detailed implementation manners

[0014] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0015] Please refer to Figure 1 and Figure 2 , the content of the embodiment of the present utility model includes:

[0016] An automatic film tearing device for a metal strip, the automatic film tearing device for the metal strip includes: a feeder 3 and a film tearing device. A loading shaft 4 is installed on the feeder 3. After the metal strip 1 is wound into a coil, it is hung on the loading shaft 4. The loading shaft 4 can rotate along with the movement of the metal strip 1. The film tearing device includes a film winding base 5, a winding rod 6, a tension adjusting mechanism and a feeding induction mechanism. The tension adjusting mechanism and the feeding induction mechanism are both installed on the film winding base 5. A winding motor is installed inside the film winding base 5. The winding rod 6 is installed on the upper part of the film winding base 5. The tail end of the winding rod 6 extends into the film winding base 5 and is connected to the power output end of the winding motor. The tension adjusting mechanism is installed below the winding rod 6. The feeding induction mechanism is communicatively connected to the winding motor. After the protective film 2 on the metal strip 1 is torn off, it is wound around the winding rod 6 after passing through the tension adjusting mechanism. The induction end of the feeding induction mechanism is located on the path between the tearing position of the protective film and the tension adjusting mechanism. When the feeder 3 feeds the material, the protective film 2 is naturally tightened. When the feeding induction mechanism senses the tightened state of the protective film 2, it will send a signal to the winding motor to control the rotation of the winding rod 6 and wind the torn-off protective film 2 onto the winding rod 6.

[0017] The feeding induction mechanism includes a sensor bracket 9, a torque sensor 10, a connecting rod 11 and an induction head 12. The sensor bracket 9 is installed on the back of the film winding base 5. The torque sensor 10 is installed on the sensor bracket 9. One end of the connecting rod 11 is connected to the torque sensor 10, and the other end is installed with the induction head 12. The induction head is rod-shaped and is located on the winding route of the protective film 2. The rod body is perpendicular to the movement direction of the protective film 2 and its length is greater than the width of the protective film. The sensor bracket 9 is a U-shaped bracket. The torque sensor 10 is a disc-type torque sensor, and the disc-type torque sensor is sleeved on the cross bar of the U-shaped bracket. The above structure is adopted because the structure of the U-shaped bracket has good matching with the installation of the disc-type torque sensor. In this way, when the induction head 12 is stressed due to the tightening of the protective film 2, the force can be quickly transmitted to the disc-type torque sensor through the connecting rod 11, thereby determining the action of the feeder 3.

[0018] The distance between the tension adjusting mechanism and the ground is less than the distance between the loading shaft 4 and the ground. In this way, an inclined plane structure is formed between the tearing position of the protective film 2 and the tension adjusting mechanism during film tearing, which is convenient for the feeding induction mechanism to sense the film surface tension.

[0019] The tension adjusting mechanism includes a limit groove 7, a tension adjusting rod 8 and a tension adjusting slider. The limit groove 7 is opened on the front surface of the film winding base 5, and its direction is perpendicular to the horizontal plane. The tension adjusting slider is installed in the limit groove 7 and can move vertically up and down along the limit groove 7. A spring is installed in the limit groove 7. The tail end of the spring abuts against the tension adjusting slider, and the top end abuts against the top of the limit groove 7. The tension adjusting rod 8 is fixed on the tension adjusting slider, and the rod body of the tension adjusting rod 8 is parallel to the rod body of the winding rod 6. In this way, through spring adjustment, the influence of the periodic start-stop action of the feeder 3 on the film surface tension can be buffered, so that the protective film 2 remains stable during the winding process, and the probability of fracture is significantly reduced. There are two tension adjusting rods 8 in total, namely an upper adjusting rod 801 and a lower adjusting rod 802. The reason for installing two tension adjusting rods 8 is that in actual use, a single tension adjusting rod 8 has to bear a large tension all the time, and problems such as bending are likely to occur. In this way, the two tension adjusting rods 8 can be used alternately, which can effectively relieve the stress on a single rod and improve the overall service life.

[0020] The working principle of the present invention is as follows: During actual feeding, when the feeder 3 is paused, the protective film 2 is in a relaxed state. At this time, the sensing head 12 is not stressed or is stressed very little, and the torque sensor 10 will not send a start signal to the winding motor. When the feeder 3 starts to feed, the rotation of the material tray automatically tightens the protective film 2. The tightened protective film will push the sensing head 12 pressed on the film surface upward, so that the torque sensor 10 senses the generation of tension, thereby confirming the action of the feeder and sending a corresponding start signal to the winding motor.

[0021] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A metal strip automatic film tearing device, characterized in that: The automatic film tearing device for metal strip comprises: a feeder and a film tearing device; a loading shaft is installed on the feeder, and the metal strip is hung on the loading shaft after being wound into a disc, and the loading shaft can rotate with the movement of the metal strip; the film tearing device comprises a film rolling seat, a winding rod, a tension adjustment mechanism and a feeding sensing mechanism, and the tension adjustment mechanism and the feeding sensing mechanism are all installed on the film rolling seat, and a winding motor is also installed in the film rolling seat, and the winding rod is installed on the upper part of the film rolling seat, and the tail end of the winding rod extends into the film rolling seat and is connected with the power output end of the winding motor, the tension adjustment mechanism is installed under the winding rod, and the feeding sensing mechanism is communicatively connected with the winding motor, and the protective film on the metal strip is torn off and then wound onto the winding rod after passing through the tension adjustment mechanism, and the sensing head of the feeding sensing mechanism is located on the path between the tearing position of the protective film and the tension adjustment mechanism.

2. The automatic film-tearing device for metal strips according to claim 1, characterized in that: The feeding sensing mechanism includes a sensor bracket, a torque sensor, a connecting rod and a sensing head. The sensor bracket is installed on the back of the film winding seat, and the torque sensor is installed on the sensor bracket. One end of the connecting rod is connected to the torque sensor, and the other end is installed with the sensing head. The sensing head is rod-shaped and located on the winding path of the protective film. The rod body is perpendicular to the movement direction of the protective film and the length of the rod body is greater than the width of the protective film.

3. The automatic film-tearing device for metal strips according to claim 2, characterized in that: The sensor bracket is a gate-shaped bracket, and the torque sensor is a disc-type torque sensor, which is sleeved on a crossbar of the gate-shaped bracket.

4. The automatic film-tearing device for metal strips according to claim 1, characterized in that: The distance between the tension adjustment mechanism and the ground is smaller than the distance between the loading shaft and the ground.

5. The automatic film-tearing device for metal strips according to claim 1, characterized in that: The tension adjustment mechanism includes a limit groove, a tension adjustment rod and a tension adjustment slider. The limit groove is opened on the front side of the film winding seat and its direction is perpendicular to the horizontal plane. The tension adjustment slider is installed in the limit groove and can move vertically up and down along the limit groove. A spring is installed in the limit groove, the tail end of the spring abuts against the tension adjustment slider, and the top end abuts against the top of the limit groove. The tension adjustment rod is fixedly installed on the tension adjustment slider, and the shaft of the tension adjustment rod is parallel to the shaft of the winding rod.

6. The automatic film-tearing device for metal strips according to claim 5, characterized in that: There are two tension adjustment rods, an upper adjustment rod and a lower adjustment rod.

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