Material breakage alarm device

Abstract

The utility model discloses a material break alarm device, including frame and buzzer alarm, the outer wall of frame is rotatingly connected with the guide roller, the outer wall of guide roller is fixedly installed with the delay time relay, the outer wall of guide roller is sleeved with the assembly ring in sliding mode, the outer wall of the assembly ring is fixedly connected with two spacing ring, the spacing ring is fixed with the buzzer alarm, and the buzzer alarm is fixed on the frame. The outer walls of the two limiting rings are each slidably sleeved with two semicircular rings. By arranging the assembling ring, the limiting ring, the semicircular ring, the countersunk bolt, the connecting rod, the locking bolt and the U-shaped piece, the positions of the arc-shaped magnet and the magnetic proximity switch are changed according to different widths of materials, the materials are conveniently rolled, and meanwhile the magnetic proximity switch moves to the position above the arc-shaped magnet; by arranging the delay time relay, the buzzer alarm, the arc-shaped magnet and the magnetic proximity switch, after the guide roller stops rotating, the buzzer alarm is powered on, buzzing alarming is conducted, a worker rapidly comes to stop after smelling sound, and waste of a large number of materials is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to a material breaking alarm device. Background Art

[0002] The film blowing machine is a machine used to produce plastic film. It is mainly composed of an extruder head, a cooling device, a stretching device, a winding device, etc. The working principle of the film blowing machine is: the plastic is melted by high temperature and high pressure, and the molten plastic is blown out by the extruder head under the action of compressed air to form a uniform layer of plastic film. When the film blowing machine is started, the film needs to pass through the guide roller until it is wound by the winder under normal circumstances; according to the existing conditions and the material running trajectory, as long as the material is extruded and wound normally, the guide roller through which the material passes will keep rotating under the tension of the material. When the material does not pass, the guide roller will stop.

[0003] In the prior art, sometimes plastic masterbatch is prone to produce charred materials at high temperatures, which causes film bubble leakage and film breakage. If there are no workers on site and the extruder is not shut down manually, the extruder will continue to work and all the materials will accumulate on the film head, which will result in a large amount of material waste. Therefore, we propose a material break alarm device to solve the above problem. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a material shortage alarm device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A material shortage alarm device comprises a frame and a buzzer alarm, wherein the outer wall of the frame is rotatably connected to a guide roller, the outer wall of the guide roller is fixedly mounted with a time delay relay, the outer wall of the guide roller is slidingly sleeved with an assembly ring, the outer wall of the assembly ring is fixedly connected with two limit rings, the outer walls of the two limit rings are both slidingly sleeved with two semicircular rings, the outer walls of the semicircular rings and the limit rings are both provided with a plurality of mounting holes, the inner walls of the plurality of mounting holes are threadedly connected with countersunk bolts, the outer wall of the assembly ring is magnetically connected with an arc magnet, and the outer wall of the frame is provided with an alarm mechanism.

[0007] Preferably, the alarm mechanism includes a magnetic proximity switch, a rectangular hole is opened on the outer wall of the frame, a connecting rod is slidably connected to the inner wall of the rectangular hole, a threaded hole is opened on the outer wall of the frame, a locking bolt is threadedly connected to the inner wall of the threaded hole, an assembly hole is opened on the outer wall of the connecting rod, the inner wall of the assembly hole is slidably connected to the outer wall of the magnetic proximity switch, and two gaskets are threadedly sleeved on the outer wall of the magnetic proximity switch, and the magnetic proximity switch is fixed to the connecting rod by setting the two gaskets.

[0008] Preferably, the outer wall of the semicircular ring is pressed against the outer wall of the arc-shaped magnet, and the arc-shaped magnet is fixed on the guide rail by arranging the semicircular ring.

[0009] Preferably, the outer wall of the semicircular ring is pressed against the outer wall of the guide roller.

[0010] Preferably, a U-shaped piece is rotatably connected to the bottom of the locking bolt, and the outer wall of the U-shaped piece is pressed against the outer wall of the connecting rod, so that the connecting rod is fixed to the frame by providing the U-shaped piece.

[0011] Preferably, the outer walls of the two gaskets are pressed against the outer wall of the connecting rod.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] This solution changes the positions of the arc magnet and the magnetic proximity switch according to the different widths of the materials by setting an assembly ring, a limit ring, a semicircular ring, a countersunk bolt, a connecting rod, a locking bolt and a U-shaped piece, so as to facilitate the winding of the materials. At the same time, the magnetic proximity switch moves the top of the arc magnet. By setting a delay time relay, a buzzer alarm, an arc magnet and a magnetic proximity switch, after the guide roller stops rotating, the buzzer alarm is energized and sounds an alarm. After hearing the sound, the workers rush to shut down the machine quickly, thus avoiding a large amount of material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods 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.

[0015] Figure 1 This is a three-dimensional structural diagram of a material shortage alarm device proposed by the utility model;

[0016] Figure 2 This is a schematic cross-sectional structure diagram of a material shortage alarm device proposed by the utility model;

[0017] Figure 3 A material breaking alarm device proposed by the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0018] In the figure: 1. frame; 2. guide roller; 3. delay time relay; 4. buzzer alarm; 5. assembly ring; 6. limit ring; 7. semicircular ring; 8. countersunk bolt; 9. arc magnet; 10. connecting rod; 11. locking bolt; 12. U-shaped piece; 13. magnetic proximity switch; 14. gasket. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Depend on Figure 1-Figure 3 As shown, it relates to a material shortage alarm device, including a frame 1 and a buzzer alarm 4. The outer wall of the frame 1 is rotatably connected to a guide roller 2, and the outer wall of the guide roller 2 is fixedly installed with a delay time relay 3. According to the working principle of the delay time relay 3, the function table is adjusted to adjust the delay time relay 3 to a signal trigger, the relay is energized and has an output, the signal is disconnected, the delay time relay 3 is disconnected after a delay of A seconds (extended time), and the output is stopped. During the delay period, a signal is given again, and the delay time relay 3 continues to keep the output. If no signal is given, the delay time relay 3 is disconnected after a delay of A seconds (extended time), and the output is stopped. When the delay time relay 3 stops outputting, the normally closed end of the delay time relay 3 is closed and connected, and the normally open end is disconnected. When the delay time relay 3 has an output, the normally closed end of the delay time relay 3 is disconnected, and the normally open end is closed and connected.

[0021] The outer wall of the guide roller 2 is slidably sleeved with an assembly ring 5, and the outer wall of the assembly ring 5 is fixedly connected to two limit rings 6. The outer walls of the two limit rings 6 are both slidably sleeved with two semicircular rings 7. The outer walls of the semicircular rings 7 are squeezed with the outer wall of the guide roller 2, and the semicircular rings 7 fix the assembly ring 5 on the guide rail.

[0022] The outer walls of the semicircular ring 7 and the limiting ring 6 are provided with multiple mounting holes, the inner walls of the multiple mounting holes are threadedly connected with countersunk bolts 8, the outer wall of the mounting ring 5 is magnetically connected with an arc magnet 9, the outer wall of the semicircular ring 7 is squeezed with the outer wall of the arc magnet 9, and the semicircular ring 7 fixes the arc magnet 9 on the mounting ring 5.

[0023] The outer wall of the frame 1 is provided with an alarm mechanism, which includes a magnetic proximity switch 13. The outer wall of the frame 1 is provided with a rectangular hole, the inner wall of the rectangular hole is slidably connected with a connecting rod 10, and the outer wall of the frame 1 is provided with a threaded hole, the inner wall of the threaded hole is threadedly connected with a locking bolt 11.

[0024] The bottom of the locking bolt 11 is rotatably connected to a U-shaped piece 12, and the outer wall of the U-shaped piece 12 is squeezed against the outer wall of the connecting rod 10. The locking bolt 11 fixes the connecting rod 10 in the rectangular hole through the U-shaped piece 12. An assembly hole is provided on the outer wall of the connecting rod 10, and the inner wall of the assembly hole is slidably connected to the outer wall of the magnetic proximity switch 13. The outer wall of the magnetic proximity switch 13 is threadedly sleeved with two gaskets 14, and the outer walls of the two gaskets 14 are squeezed against the outer wall of the connecting rod 10.

[0025] Connect the two wires of the magnetic proximity switch 13 to the signal trigger end of the delay time relay 3 respectively; connect the existing power supply to the input power supply zero and live wires of the delay time relay 3; connect another set of power supply live wires to the common end of the delay time relay 3, and the neutral wire to one end of the buzzer alarm 4; use a wire to connect the normally closed end of the delay time relay 3 and the other end of the buzzer alarm 4.

[0026] Working principle: When in use, according to the different widths of the materials, the countersunk bolts 8 are turned to release the position fixation of the four semicircular rings 7, and the movable assembly ring 5 and the limit ring 6 drive the arc magnet 9 to move left and right, changing the position of the arc magnet 9 to facilitate the winding of the material. At the same time, after the arc magnet 9 moves, the locking bolts 11 are turned to drive the U-shaped piece 12 to move upward, releasing the position fixation of the connecting rod 10, and the magnetic proximity switch 13 is moved through the connecting rod 10, and its sensing end is located above the arc magnet 9; the guide roller 2 rotates continuously when the material passes, and the arc magnet 9 also rotates accordingly, so that the magnetic proximity switch 13 is continuously switched under the induction of the arc magnet 9. The trigger signal of the delay time relay 3 is continuously and intermittently triggered, so that the delay time relay 3 is triggered multiple times within the delay A seconds (extended time) of the function block, and the delay time relay 3 keeps the output state. Once the guide roller 2 stops rotating, the magnetic switch will disconnect the trigger or the magnetic proximity switch 13 keeps the trigger state, and the delay time relay 3 will stop outputting after A seconds (extended time). When the delay time relay 3 stops outputting, the normally open function of the delay time relay 3 is disconnected and the normally closed function is closed. Therefore, once closed, the buzzer alarm 4 is powered and the buzzer alarm sounds. The power supply of this buzzer alarm 4 can be selected as DC or AC power supply according to the actual situation. At the same time, this buzzer alarm 4 can also be used on other machines and equipment to alarm for material shortage or material shortage.

[0027] The standard parts used in the utility model can all be purchased from the market, special-shaped parts can be customized according to the description in the specification and the drawings, the specific connection methods of each part all adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0028] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A material shortage alarm device, comprising a frame (1) and a buzzer alarm (4), characterized in that: The outer wall of the frame (1) is rotatably connected to a guide roller (2), the outer wall of the guide roller (2) is fixedly mounted with a time delay relay (3), the outer wall of the guide roller (2) is slidably sleeved with an assembly ring (5), the outer wall of the assembly ring (5) is fixedly connected with two limit rings (6), the outer walls of the two limit rings (6) are both slidably sleeved with two semicircular rings (7), the semicircular rings (7) and the outer walls of the limit rings (6) are both provided with a plurality of mounting holes, the inner walls of the plurality of mounting holes are all threadedly connected with countersunk bolts (8), the outer wall of the assembly ring (5) is magnetically connected with an arc magnet (9), and the outer wall of the frame (1) is provided with an alarm mechanism.

2. A material shortage alarm device according to claim 1, characterized in that: The alarm mechanism comprises a magnetic proximity switch (13); a rectangular hole is provided on the outer wall of the frame (1); a connecting rod (10) is slidably connected to the inner wall of the rectangular hole; a threaded hole is provided on the outer wall of the frame (1); a locking bolt (11) is threadedly connected to the inner wall of the threaded hole; an assembly hole is provided on the outer wall of the connecting rod (10); the inner wall of the assembly hole is slidably connected to the outer wall of the magnetic proximity switch (13); and two gaskets (14) are threadedly sleeved on the outer wall of the magnetic proximity switch (13).

3. A material shortage alarm device according to claim 1, characterized in that: The outer wall of the semicircular ring (7) is pressed against the outer wall of the arc-shaped magnet (9).

4. A material shortage alarm device according to claim 1, characterized in that: The outer wall of the semicircular ring (7) is pressed against the outer wall of the guide roller (2).

5. A material shortage alarm device according to claim 2, characterized in that: The bottom of the locking bolt (11) is rotatably connected to a U-shaped piece (12), and the outer wall of the U-shaped piece (12) is pressed against the outer wall of the connecting rod (10).

6. A material shortage alarm device according to claim 2, characterized in that: The outer walls of the two gaskets (14) are pressed against the outer wall of the connecting rod (10).

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