Glass fiber unwinding broken bar alarm mechanism for extruder

Abstract

The utility model relates to a glass fiber unwinding and strip breaking alarm mechanism for an extruder, and relates to the technical field of extruder processing. The rack is rotatably connected with a wire roller, a glass fiber coiled material is wound on the wire roller, the rack is provided with a guide bracket, the guide bracket is provided with a guide hole through which a glass fiber passes, the glass fiber is pulled to pass through the guide hole and can drive the wire roller to rotate, the guide bracket is hinged with an overturning frame, the glass fiber passes through the lower part of the overturning frame, and the overturning frame is connected with the wire roller. The turning frame can be driven to turn upwards; a first contact is arranged on the guide support, a second contact is arranged on the turnover frame, and when the turnover frame tends to turn downwards under the action of gravity, the second contact tends to abut against the first contact, and when the turnover frame turns upwards, the second contact tends to be away from the first contact; the first contact and the second contact are connected with wires, and an alarm is connected between the two wires. According to the invention, the speed and accuracy of glass fiber unwinding broken bar detection can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of extruder processing technology, and in particular to a glass fiber unwinding broken strip alarm mechanism for an extruder. BACKGROUND

[0002] In modern industry, especially in the fields of automobile manufacturing, building materials and electronics, long glass fibers are widely used as reinforcing materials, which are added to plastics or other matrix materials to improve the mechanical properties, chemical resistance and temperature resistance of products. However, in actual production process, due to various factors such as equipment failure, improper operation, environmental condition change, etc., the long glass fiber strip may be broken before entering the extruder. Such breakage not only interrupts the normal production process, but also seriously affects the quality of the final product, such as reducing the strength and increasing the defect rate.

[0003] At present, the treatment of long glass fiber broken strip problem in the industry mainly depends on manual visual inspection or simple sensor monitoring, which has the problems of slow response speed and low detection accuracy. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the speed and accuracy of glass fiber unwinding broken strip detection, the application provides a glass fiber unwinding broken strip alarm mechanism for an extruder.

[0005] The glass fiber unwinding broken strip alarm mechanism for an extruder provided by the application adopts the following technical scheme:

[0006] A glass fiber unwinding broken strip alarm mechanism for an extruder, comprising a rack, a wire roller rotatably connected to the rack, a glass fiber roll wound on the wire roller, a guide bracket provided on the rack, a guide hole provided on the guide bracket for threading the glass fiber, the glass fiber being pulled to pass through the guide hole to drive the wire roller to rotate, a turnover frame hinged to the guide bracket, the glass fiber passing under the turnover frame to drive the turnover frame to turn over;

[0007] A first contact point is provided on the guide bracket, and a second contact point is provided on the turnover frame, the second contact point tends to abut against the first contact point when the turnover frame tends to turn down under the action of gravity, and the second contact point tends to move away from the first contact point when the turnover frame turns over;

[0008] A wire is connected to each of the first contact point and the second contact point, and an alarm is connected between the two wires, the alarm is started and alarms when the first contact point and the second contact point are in contact, and the alarm is turned off when the first contact point and the second contact point are separated.

[0009] By adopting the above technical scheme, when the glass fiber is broken, the turnover frame is turned down due to the loss of tension, so that the contact point contacts and starts the alarm, timely reminding the operator, effectively avoiding the interruption of production and product quality problems.

[0010] Optionally, a roller for guiding the glass fiber is arranged on the turnover frame.

[0011] By adopting the above technical scheme, the roller arranged on the turnover frame not only reduces the friction between the glass fiber and the turnover frame, but also protects the surface of the glass fiber from being damaged.

[0012] Optionally, a limiting groove is arranged on the outer peripheral wall of the roller.

[0013] By adopting the above technical scheme, the limiting groove on the outer peripheral wall of the roller not only enhances the guiding property of the glass fiber, but also effectively prevents the position deviation of the glass fiber during unwinding through physical limitation, improves the accuracy and stability of the glass fiber unwinding, and provides reliable glass fiber supply for the subsequent processing process.

[0014] Optionally, a rotating shaft is fixedly connected to the wire roller, the rotating shaft is rotatably connected to the rack, a stud is threadedly connected to the support, and a limiting piece for abutting against the rotating shaft is arranged on the stud.

[0015] By adopting the above technical scheme, the rotating shaft is fixedly connected to the wire roller, and the threadedly connected stud and the limiting piece are arranged on the rack, and the resistance of the wire roller rotation is adjusted by screwing the stud to adjust the abutting effect of the rotating shaft, which not only prevents the self-rotation of the wire roller when the glass fiber is not pulled, but also allows the resistance to be adjusted according to actual needs, improving the adaptability and flexibility of the equipment.

[0016] Optionally, the limiting piece comprises a friction belt, the friction belt is wound on the rotating shaft, one end of the friction belt is fixedly connected to the rack, and the other end of the friction belt is rotatably connected to the stud.

[0017] By adopting the above technical scheme, the limiting piece adopts the design of the friction belt, which is simple and practical. One end of the friction belt is fixed to the rack, and the other end is rotatably connected to the stud. By adjusting the position of the stud, the compression degree of the friction belt on the rotating shaft can be changed, so as to accurately control the rotation resistance of the wire roller, and effectively manage the rotation of the wire roller.

[0018] Optionally, the end of the friction belt away from the stud is connected to the rack through a tension spring.

[0019] By adopting the above technical scheme, the tension spring is arranged at the end of the friction belt away from the stud, so that the friction belt can maintain a certain tension and closely fit on the rotating shaft, thereby improving the accuracy and stability of the adjustment of the rotating resistance of the wire roller, further enhancing the reliability and durability of the equipment, and reducing the risk of failure caused by loosening or failure of the friction belt.

[0020] To sum up, the present application has at least one of the following beneficial technical effects:

[0021] 1. When the glass fiber breaks, the turnover frame is turned down due to the loss of tension, so that the contact points contact and start the alarm, timely reminding the operator, effectively avoiding production interruption and product quality problems;

[0022] 2. The limiting piece adopts the design of the friction belt, which is simple and practical. One end of the friction belt is fixed to the rack, and the other end is rotatably connected to the stud. By adjusting the position of the stud, the compression degree of the friction belt on the rotating shaft can be changed, so as to accurately control the rotating resistance of the wire roller, and effectively manage the rotation of the wire roller. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0024] Figure 2 is a schematic diagram of the structure of the turnover frame according to the embodiment of the present application.

[0025] Figure 3 is a schematic diagram of the structure of the first contact and the second contact according to the embodiment of the present application.

[0026] Figure 4 is a schematic diagram of the structure of the limiting piece according to the embodiment of the present application.

[0027] Reference signs: 1, rack; 11, wire roller; 12, guide support; 13, guide hole; 14, roller; 15, limiting groove; 16, first contact; 17, second contact; 18, wire; 19, alarm; 2, rotating shaft; 21, stud; 22, turnover frame; 3, limiting piece; 31, tension spring; 32, friction belt. DETAILED DESCRIPTION

[0028] The following will be described in detail in combination with the accompanying Figures 1-4 The present application will be further described in detail.

[0029] The embodiment of the present application discloses a glass fiber unwinding broken strip alarm mechanism for an extruder. As shown in Figure 1 and Figure 2The fiberglass unwinding breakage alarm mechanism for extruders includes a frame 1, on which multiple wire rollers 11 are rotatably connected via bearings. Fiberglass rolls are wound on the wire rollers 11. To guide the unwinding of the fiberglass, a guide bracket 12 is fixedly installed on the frame 1. The guide bracket 12 has guide holes 13. The fiberglass is pulled through the guide holes 13 and extends into the feed end of the corresponding extruder (not shown in the figure). As the extruder extrudes the fiberglass strip, it pulls the wire rollers 11 to rotate.

[0030] like Figure 3 and Figure 4 In this embodiment, two guide supports 12 are provided on the frame 1, and the guide holes 13 of the two guide supports 12 are arranged opposite to each other. A flip frame 22 is rotatably connected to one of the guide supports 12 via a hinge. The flip frame 22 can flip up and down around the hinge and is located between the two guide supports 12. Fiberglass passes through the bottom of the flip frame 22. When the fiberglass is normally pulled, the tension of the fiberglass will cause the flip frame 22 to flip upward. The flip angle of the flip frame 22 can be adjusted by the tension of the fiberglass and the weight of the flip frame 22.

[0031] To achieve automatic detection of fiberglass breakage, a first contact 16 is fixedly installed on the guide bracket 12, and a second contact 17 is fixedly installed on the flipping frame 22. When the flipping frame 22 tends to flip downwards under its own weight, the second contact 17 tends to contact the first contact 16; conversely, when the fiberglass drives the flipping frame 22 to flip upwards, the second contact 17 tends to move away from the first contact 16. Both the first contact 16 and the second contact 17 are connected to wires 18, and an alarm 19 is connected in series between the two wires 18, forming a closed or open circuit. The alarm 19 is equipped with an audible and visual alarm element, a control chip, and a power supply.

[0032] When the fiberglass breaks, the tilting frame 22 loses the tension of the fiberglass and tilts downwards under its own weight, causing the second contact 17 to come into contact with the first contact 16. At this time, the circuit is closed, and the alarm 19 is activated and emits an alarm signal. When the fiberglass resumes normal traction, the tilting frame 22 will be driven upwards by the fiberglass, causing the second contact 17 to separate from the first contact 16. At this time, the circuit is broken, and the alarm 19 stops sounding.

[0033] A roller 14 is rotatably connected to the flipping frame 22, and a limiting groove 15 is formed on the outer peripheral wall of the roller 14. The roller 14 can reduce the friction between the glass fiber and the flipping frame 22 and protect the glass fiber from being scratched; while the limiting groove 15 can limit the position of the glass fiber and prevent the glass fiber from shifting or falling off during the unwinding process.

[0034] A rotating shaft 2 is fixedly connected to the wire roller 11. The rotating shaft 2 is rotatably connected to the frame 1 via bearings. The wire roller 11 drives the rotating shaft 2 to rotate relative to the frame 1. A stud 21 is threaded onto the guide bracket 12. A limiting element 3 is provided on the stud 21 to restrict the free rotation of the rotating shaft 2. The limiting element 3 includes a friction belt 32, which is wound around the rotating shaft 2. One end of the friction belt 32 is fixedly connected to the frame 1, and the other end is rotatably connected to the stud 21. By adjusting the position of the stud 21, the pressure of the friction belt 32 on the rotating shaft 2 can be changed, thereby adjusting the rotational resistance of the wire roller 11 and preventing the wire roller 11 from rotating on its own when the glass fiber is not being pulled.

[0035] To ensure that the friction band 32 fits tightly against the rotating shaft 2 and maintains a certain tension, the present invention also provides a tension spring 31 at the end of the friction band 32 away from the stud 21. One end of the tension spring 31 is connected to the frame 1, and the other end is connected to the friction band 32, thereby maintaining the tension of the friction band 32.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A glass fiber unwinding breakage alarm mechanism for an extruder, characterized in that: The utility model relates to a glass fiber winding device, including frame (1), frame (1) is rotatably connected with wire roller (11), wire roller (11) is wound with glass fiber coil material, frame (1) is provided with guide support (12), guide support (12) is provided with the guide hole (13) for the glass fiber of setting, glass fiber is drawn from the guide hole (13) and passes, can drive wire roller (11) rotation, guide support (12) is hinged with turnover frame (22), glass fiber passes from the turnover frame (22) below, to can drive turnover frame (22) and turn over; First contact (16) is provided on the guide support (12), the second contact (17) is provided on the turnover frame (22), when the turnover frame (22) is inclined to turn down under the action of gravity, so that the second contact (17) is inclined to abut on the first contact (16), the turnover frame (22) is turned over, so that the second contact (17) is inclined to be away from the first contact (16); First contact (16) and second contact (17) are connected with the wire (18) on both, and the alarm (19) is connected between two wires (18), when the first contact (16) and the second contact (17) contact, the alarm (19) starts and alarms;When two first contact (16) and the second contact (17) are separated, the alarm (19) is closed.

2. The glass fiber unwinding and broken strand alarm mechanism for an extruder according to claim 1, characterized in that: The turnover frame (22) is provided with a roller (14) for guiding the glass fiber.

3. The glass fiber unwinding and broken strand alarm mechanism for an extruder according to claim 2, characterized in that: A circle of limiting grooves (15) is arranged on the outer peripheral wall of the roller (14).

4. The glass fiber unwinding and broken strand alarm mechanism for an extruder according to claim 1, characterized in that: The wire roller (11) is fixedly connected with a rotating shaft (2), the rotating shaft (2) is rotatably connected to the frame (1), the support is screwedly connected with a stud (21), and the stud (21) is provided with a limiting piece (3) for abutting against the rotating shaft (2).

5. The glass fiber unwinding and broken strand alarm mechanism for an extruder according to claim 4, characterized in that: The limiting piece (3) includes a friction belt (32), the friction belt (32) is wound on the rotating shaft (2), one end of the friction belt (32) is fixedly connected to the frame (1), and the other end of the friction belt (32) is rotatably connected to the stud (21).

6. The glass fiber unwinding and broken strand alarm mechanism for an extruder according to claim 5, characterized in that: The end of the friction belt (32) away from the stud (21) is connected to the frame (1) through a tension spring (31).

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