Broken bar alarm device of extruder

Abstract

The utility model relates to a broken bar alarm device of an extruder, and relates to the technical field of extruders. The device comprises a rack, a supporting arm used for bearing a material strip is hinged to the rack, a conductive bracket used for limiting the overturning angle of the supporting arm is fixedly connected to the rack, an elastic piece is arranged between the rack and the supporting arm, and the elastic piece is used for pushing the supporting arm to move towards the conductive bracket; the rack is made of an insulating material, the supporting arm and the conductive bracket are both made of a conductive material, the supporting arm and the conductive bracket are connected through a wire, an alarm is connected to the wire in series, the material strip drives the supporting arm to be separated from the conductive bracket and supported on the rack under the action of gravity in the state that the material strip is supported on the supporting arm, the supporting arm can be disconnected from the conductive bracket, and the alarm is closed; after the material strip is broken, the material strip is separated from the support arms, so that the support arms abut against the conductive bracket under the elastic force of the elastic piece and are communicated with the conductive bracket, and the alarm is started. According to the invention, automatic detection and alarm of material strip breakage of the extruder can be realized, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of extruder technology, in particular to an extruder broken strip alarm device. BACKGROUND

[0002] In the extrusion production link of modified plastic processing, the plastic extruder produces the required plastic particles through some procedures such as pulling strips, removing water, and cutting particles. The plastic particles are continuously extruded through a die. The extrusion process is not always smooth. Factors such as substandard raw material quality, die wear due to long-term use, or improper extruder parameter configuration may cause the material strip to break during extrusion. Unexpected breakage of the material strip not only directly weakens the efficiency of the production line and the stability of the quality of the output products, but also may cause potential damage to the structure of the extruder itself, increasing maintenance costs.

[0003] The traditional coping strategy highly depends on the direct visual monitoring of the operator. The operator needs to pay attention to the state of the material strip in the extruder at all times. Once a breakage is found, the operator needs to intervene quickly and manually rejoin the broken part. Although this method is direct, it has a significant problem of human consumption. Moreover, the attention and reaction speed of humans are limited, and it is difficult to ensure that all unexpected situations can be responded to in a timely manner. Therefore, the broken material strip that is not handled in a timely manner often leads to unnecessary waste of materials and further drags down the overall production efficiency of the extruder, becoming a key factor restricting the improvement of production efficiency. CONTENT OF THE INVENTION

[0004] In order to realize automatic detection and alarm of the broken material strip of the extruder, reduce production accidents, and improve production efficiency, the present application provides an extruder broken strip alarm device.

[0005] The extruder broken strip alarm device provided by the present application adopts the following technical solution:

[0006] An extruder broken strip alarm device, comprising a rack, a support arm for supporting a material strip is hingedly connected to the rack, a conductive bracket for limiting the overturning angle of the support arm is fixedly connected to the rack, an elastic member is arranged between the rack and the support arm, and the elastic member is used to push the support arm to move towards the conductive bracket; the rack is made of an insulating material, the support arm and the conductive bracket are made of a conductive material, the support arm and the conductive bracket are connected by a wire, and an alarm is connected in series to the wire; under the action of gravity, the material strip supports the support arm to be separated from the conductive bracket and supported on the rack when the material strip is supported on the support arm, the support arm can be disconnected from the conductive bracket, and the alarm is turned off; after the material strip is disconnected, the material strip is separated from the support arm, the support arm abuts against the conductive bracket and is in communication with each other under the elastic force of the elastic member, and the alarm is started.

[0007] By adopting the technical scheme, when the material strip is normal, the support arm is supported on the rack by the gravity of the material strip, is disconnected with the conductive bracket, and the alarm is closed; after the material strip is broken, the support arm abuts against the conductive bracket under the action of the elastic member and connects the circuit, triggers the alarm to start, thereby timely reminding the operator to handle, realizes the automatic detection and alarm of the material strip breakage of the extruder, effectively reduces production accidents, and improves production efficiency.

[0008] Optionally, the support arm and the conductive bracket form a group of trigger switches, and the trigger switches are provided in several groups and are connected in parallel on the wire.

[0009] By adopting the technical scheme, the support arm and the conductive bracket form a group of trigger switches in the embodiment, and such trigger switches are provided in several groups and are connected in parallel on the wire, so that the alarm can be triggered when part of the material strip is broken.

[0010] Optionally, the elastic member includes a torsion spring, the support arm is hinged to the rack through a rotating shaft, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixedly connected to the support arm, and the other end of the torsion spring is fixedly connected to the rack and drives the support arm to tend to abut against the conductive bracket.

[0011] By adopting the technical scheme, the torsion spring is used as the elastic member, the support arm is hinged to the rack through the rotating shaft, and the elastic force of the torsion spring is ingeniously used to drive the support arm to tend to abut against the conductive bracket, so that the design is simple and efficient. The use of the torsion spring ensures that the support arm can be quickly and stably reset after the material strip is broken, triggers the alarm, is easy to install and maintain, and reduces the complexity of the device.

[0012] Optionally, a roller is rotatably arranged on the support arm, and the roller is used to support the material strip.

[0013] By adopting the technical scheme, the design of the roller rotatably arranged on the support arm reduces the frictional resistance between the material strip and the support arm, is beneficial to the stable conveying of the material strip, reduces the damage of the material strip caused by friction, and improves the production quality.

[0014] Optionally, a groove is arranged on the outer circumferential wall of the roller.

[0015] By adopting the technical scheme, the groove arranged on the outer circumferential wall of the roller further enhances the fixing effect of the roller on the material strip, prevents the material strip from slipping or deviating during conveying, and ensures the accuracy and stability of the position of the material strip.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] 1. When the material strip is normal, the support arm is supported on the frame by the gravity of the material strip, disconnected with the conductive bracket, and the alarm is closed; after the material strip is broken, the support arm abuts against the conductive bracket under the action of the elastic member and connects the circuit, triggers the alarm to start, thereby timely reminding the operator to handle, realizes the automatic detection and alarm of the broken material strip of the extruder, effectively reduces the production accidents, and improves the production efficiency;

[0018] 2. The trigger switch is provided with a plurality of groups and is connected in parallel on the wire, so that part of the material strip is broken, and the alarm can be triggered. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic diagram of the embodiment of the application.

[0020] Figure 2 is the structure schematic diagram of the frame and the support arm for embodying the embodiment of the application.

[0021] Figure 3 is the cross-sectional view for embodying the trigger switch power-off of the embodiment of the application.

[0022] Figure 4 is the cross-sectional view for embodying the trigger switch power-on of the embodiment of the application.

[0023] Marked 1, frame; 11, support arm; 12, rotating shaft; 2, elastic member; 21, torsional spring; 3, conductive bracket; 32, alarm; 33, wire; 34, roller; 35, groove. DETAILED DESCRIPTION

[0024] The following will be described in detail in combination with the accompanying Figures 1-4 The application is further described in detail.

[0025] The embodiment of the application discloses an extruder broken strip alarm device. Figure 1 The extruder broken strip alarm device comprises a frame 1, the frame 1 is arranged on a die of an extruder or installed on a cooling water tank of extrusion, in the embodiment of the application, the frame 1 is installed on the cooling water tank. The frame 1 is used as a basic support component of the whole device, is made of high-strength and corrosion-resistant material, so as to ensure the stability and durability of the device.

[0026] As shown in Figure 2 and Figure 3 , the frame 1 is hinged with a support arm 11 through a rotating shaft 12, and is used for supporting a material strip continuously extruded from the extruder. An elastic member 2 is arranged between the frame 1 and the support arm 11, the elastic member 2 comprises a torsional spring 21 sleeved on the rotating shaft 12, one end of the torsional spring 21 is connected with the support arm 11, and the other end of the torsional spring 21 is connected with the frame 1. The elastic force of the torsional spring 21 makes the support arm 11 tend to turn to the direction of the conductive bracket 3 when not subjected to external force, and keeps the contact state with the conductive bracket 3.

[0027] The rotating shaft 12 is rotatably connected to one end of the supporting arm 11, and the supporting arm 11 is fixedly connected to the frame 1. The other end of the supporting arm 11 is used to place the material strip. The frame 1 is made of insulating material, and the supporting arm 11, the rotating shaft 12 and the conductive bracket 3 are made of conductive material. When the supporting arm 11 abuts against the conductive bracket 3, the rotating shaft 12 is in conduction with the conductive bracket 3. When the supporting arm 11 is separated from the conductive bracket 3 and abuts against the frame 1, the rotating shaft 12 is disconnected from the conductive bracket 3.

[0028] The alarm 32 is connected to the conductive bracket 3 and the rotating shaft 12 through the wire 33, and is used to send an alarm signal when the electric connection between the rotating shaft 12 and the conductive bracket 3 is in conduction. The alarm 32 can be set to sound alarm, light alarm or sound-light alarm, etc. to meet the needs of different scenes.

[0029] In addition, in order to facilitate the support of the material strip and reduce friction, the supporting arm 11 is further rotatably provided with a roller 34. A groove 35 is arranged on the outer peripheral wall of the roller 34 to reduce the situation that the material strip is separated from the roller 34.

[0030] As Figure 3 and Figure 4 When the extruder is working normally, the material strip is continuously extruded from the extruder and supported on the roller 34. The gravity of the material strip will make the supporting arm 11 turn down and be supported on the frame 1. At this time, the electric connection between the supporting arm 11 and the conductive bracket 3 is disconnected, and the alarm 32 is turned off. Once the material strip is broken, the material strip will be separated from the roller 34, and the supporting arm 11 will turn up and abut against the conductive bracket 3 under the elastic force of the torsional spring 21 to form an electric connection, so as to trigger the alarm 32 to start and send an alarm signal.

[0031] The supporting arm 11 and the conductive bracket 3 form a group of trigger switches in this embodiment, and a plurality of groups of such trigger switches are arranged in parallel on the wire 33. Even if part of the material strip is broken, as long as one group of trigger switches is activated, the alarm 32 will start.

[0032] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. An extruder broken strand alarm apparatus characterized by: The utility model provides a kind of material bar supporting device, including rack (1), the support arm (11) for supporting material bar is hinged on the rack (1), the electrically conductive bracket (3) for limiting the turning angle of the support arm (11) is fixedly connected on the rack (1), and the elastic member (2) is arranged between the rack (1) and support arm (11), and the elastic member (2) is used to push the support arm (11) towards the electrically conductive bracket (3) direction moves; The rack (1) is insulating material, the support arm (11) and the electrically conductive bracket (3) are electrically conductive material, the support arm (11) and the electrically conductive bracket (3) are connected by wire (33), and the alarm (32) is connected in series on the wire (33), material bar is supported in the state of the support arm (11), under the action of gravity, the support arm (11) is separated from the electrically conductive bracket (3), and is supported on the rack (1), the support arm (11) can be disconnected with the electrically conductive bracket (3), and the alarm (32) is closed;When the material bar is disconnected, the material bar is separated from support arm (11), so that support arm (11) is abutted on the electrically conductive bracket (3) under the elastic force of elastic member (2) and is interconnected, so that the alarm (32) is started.

2. A broken bar alarm device for an extruder as defined in claim 1, wherein: The support arm (11) and the electrically conductive bracket (3) form a group of trigger switches, and the trigger switches are provided in several groups, and the several trigger switches are connected in parallel on the wire (33).

3. A broken bar alarm apparatus for an extruder as defined in claim 1, wherein: The elastic member (2) includes a torsion spring (21), the support arm (11) is hinged on the rack (1) by a rotating shaft (12), the torsion spring (21) is sleeved on the rotating shaft (12), one end of the torsion spring (21) is fixedly connected to the support arm (11), and the other end of the torsion spring (21) is fixedly connected to the rack (1), and the support arm (11) is driven to abut against the electrically conductive bracket (3).

4. The extruder broken bar alarm of claim 1 wherein: The support arm (11) is provided with a roller (34) rotating thereon, and the roller (34) is used for supporting the material bar.

5. A broken bar alarm device for an extruder as defined in claim 4, wherein: A groove (35) is arranged on the outer peripheral wall of the roller (34).

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