Cake extrusion detection structure

Abstract

The utility model relates to the field of auxiliary equipment of an extruding machine, in particular to an extruded cake detection structure, which is characterized in that a containing cavity with an opening facing an extruding rod is arranged in the middle of an extruding rod pad, a movable part capable of sliding along the axial direction of the extruding rod is arranged in the containing cavity, and the movable part is propped against a detection rod; an elastic piece which enables the movable piece to tend to be far away from the extrusion rod pad and ejects the detection rod into the concave hole is arranged between the movable piece and the extrusion rod pad; the extrusion cake detection structure further comprises an alarm and two conducting strips electrically connected with the alarm, when the first side face of the extrusion cake abuts against the extrusion rod, the detection rod stretches into the concave hole, the movable piece is located at the position away from the extrusion rod pad, the two conducting strips make contact with the insulation part of the lining, and a circuit of the alarm is disconnected. When the second side face of the extrusion cake abuts against the extrusion rod, the second side face abuts against the movable piece to the position close to the extrusion rod pad through the detection rod, the two conducting strips make contact with the conducting part of the lining, and a circuit of the alarm is connected. The device can detect whether the extruded cake is placed reversely or not, is simple in structure, and can be realized through simple transformation on an old extruder.

Description

Technical Field

[0001] This utility model relates to the field of extrusion machine auxiliary equipment, and in particular to an extrusion cake detection structure. Background Technology

[0002] In the aluminum extrusion process, the aluminum rod is first heated to soften it, and then placed into the extruder's feed chamber. The extrusion rod pushes the extruder cake, pressing the aluminum rod towards the die to extrude the aluminum profile. The addition of the extruder cake is crucial in this process; if the cake is placed in the wrong direction, it can cause bending or breakage during extrusion, thus affecting normal production. Therefore, existing technologies incorporate detection mechanisms into the extrusion rod, such as the extrusion protection device for an aluminum rod extrusion machine disclosed in Chinese Utility Model Patent ZL2023207576647, which can trigger an alarm when the extruder cake is placed in the wrong direction.

[0003] However, as can be seen from the structure disclosed in the aforementioned patent, to achieve the function of this device, a channel needs to be opened in its movable beam (also known as the butterfly head) for the linkage shaft to pass through; at the same time, a second channel needs to be opened in the movable beam for the lever to pass through, which means that at least two channels need to be opened in the movable beam. In addition, the protection principle of this kind of protection device is to use a position sensor to sense the position of the lever to generate a sensing signal and then control the movable beam; in order to achieve this function, a controller that can connect to the position sensor and recognize the sensing signal needs to be configured. In actual production, most extruders are older models. If the above-mentioned protection device is to be added to an older extruder, the movable beam needs to be removed and the two channels mentioned above need to be drilled. However, the movable beam is large and thick, making actual operation difficult; in addition, a lever and other structures are required. The lever is relatively long, and in order to ensure accurate sensing, the installation precision of the lever must be very high, otherwise the position sensor will not be able to accurately sense the lever; furthermore, older extruders may not be equipped with a controller that can connect to the position sensor, so the position sensor cannot be used. The aforementioned issues make it difficult to install the extrusion protection device on older extrusion presses; it can generally only be installed on new extrusion presses before they leave the factory. Therefore, it is necessary to improve upon the existing technology to address these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a cake extrusion detection structure that can detect whether the cake is placed in reverse. The structure is simple and can be easily installed on older extruders through simple modifications.

[0005] To achieve the above objectives, this utility model provides a cake extrusion detection structure, which includes a butterfly head. A rod extrusion pad, a rod extrusion bushing, and a rod extrusion cap are sequentially installed on one side of the butterfly head. The rod extrusion bushing presses the first end of a rod against the rod extrusion pad. The rod extends from the rod extrusion cap and has an axial through hole. A detection rod is slidably connected within the through hole. The second end of the rod abuts against a cake extrusion. The first side of the cake extrusion has a recessed hole allowing the detection rod to extend into it, and the second side is flat. A receiving cavity with an opening facing the rod is provided in the middle of the rod extrusion pad. A movable member capable of sliding along the axial direction of the rod is provided within the receiving cavity. The movable member abuts against the detection rod. A spacer is provided between the movable member and the rod extrusion pad to move the movable member away from the rod. The extrusion rod pad pushes the detection rod to the elastic element that extends into the recessed hole; the extrusion cake detection structure also includes an alarm and two conductive plates electrically connected to the alarm. The outer periphery of the movable part is wrapped with a bushing, which is divided into an insulating part and a conductive part along the sliding direction of the movable part. The two conductive plates are fixedly installed on the side wall of the accommodating cavity and in contact with the bushing. When the first side of the extruded cake abuts against the extrusion rod, the detection rod extends into the recessed hole, the movable part is located away from the extrusion rod pad, the two conductive plates contact the insulating part of the bushing, and the circuit of the alarm is disconnected; when the second side of the extruded cake abuts against the extrusion rod, the second side pushes the movable part to a position close to the extrusion rod pad with the help of the detection rod, the two conductive plates contact the conductive part of the bushing, and the circuit of the alarm is connected.

[0006] Furthermore, the elastic element is a spring disposed between the moving part and the extrusion rod pad.

[0007] Furthermore, a guide post is provided at the bottom of the accommodating cavity, a spring is sleeved on the outside of the guide post, and a guide hole is provided on the movable part, with the guide hole slidably connected to the guide post.

[0008] Furthermore, the bushing includes an insulating ring and a conductive ring sleeved on the outside of the insulating ring. The insulating ring has a groove and the conductive ring is nested in the groove so that the outer surface of the insulating ring is flush with the outer surface of the conductive ring.

[0009] Furthermore, the insulating ring is a ceramic ring, and the conductive ring is a copper ring.

[0010] Furthermore, the extrusion rod pad has a through hole or groove for the alarm's wire to pass through, and the extrusion rod cover has a through hole or groove for the alarm's wire to pass through. The alarm is installed on the extrusion rod cover.

[0011] Furthermore, the alarm is an alarm light and / or a buzzer, and the alarm has its own power supply.

[0012] This utility model provides a cake detection structure. If the cake is placed correctly, the moving part remains away from the extruder pad, and the alarm will not sound. However, if the cake is placed incorrectly, the moving part is pushed close to the extruder pad, triggering the alarm, and the operator can immediately stop the machine to correct the error. The main component requiring modification in this cake detection structure is the extruder pad, which is simply fitted onto the first end of the extruder rod. The extruder pad is significantly smaller and lighter than the butterfly head, making its modification simpler and allowing for easy modification of older extruders to achieve this cake detection structure at a low cost. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the extrusion cake detection structure of this utility model;

[0014] Figure 2 When the extruded cake is placed correctly Figure 1 A schematic diagram of the structure shown at point A in the middle;

[0015] Figure 3 When the extruded cake is placed backwards Figure 1 A schematic diagram of the structure shown at point A in the middle.

[0016] Explanation of reference numerals in the attached figures:

[0017] 11. Butterfly head; 12. Extruder pad; 13. Extruder bushing; 14. Extruder cap; 15. Extruder; 16. Detection rod; 17. Extruded cake;

[0018] 2. Receiving cavity; 21. Guide post;

[0019] 3. Moving parts; 31. Insulating ring; 32. Conductive ring; 33. Guide hole;

[0020] 4. Elastic components;

[0021] 5. Alarm device;

[0022] 6. Conductive sheet;

[0023] 7. Electrical wires. Detailed Implementation

[0024] The present invention will be described in detail below with reference to specific embodiments.

[0025] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through one or more intermediate media. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The directional terms appearing in this utility model are for the purpose of better describing the characteristics of the features and the relationships between them. It should be understood that when the placement direction of this utility model changes, the direction of the characteristics of the features and the relationships between them also changes accordingly. Therefore, directional terms do not constitute an absolute limitation on the characteristics of the features and the relationships between them in space, but only a relative limitation.

[0026] This utility model provides a cake extrusion detection structure, such as Figures 1 to 3 As shown, it includes a butterfly head 11. A rod pad 12, a rod bushing 13, and a rod cap 14 are sequentially mounted on one side of the butterfly head 11. The rod bushing 13 presses the first end of a rod 15 against the rod pad 12. The rod 15 extends from the rod cap 14. The rod 15 has an axial through hole, and a detection rod 16 is slidably connected within the through hole. The second end of the rod 15 abuts against a cake 17. The first side of the cake 17 has a recessed hole allowing the detection rod 16 to extend into it, and the second side is flat. A receiving cavity 2 with an opening facing the rod 15 is provided in the middle of the rod pad 12. A movable member 3 that can slide along the axial direction of the rod 15 is provided in the receiving cavity 2. The movable member 3 abuts against the detection rod 16. A spacer is provided between the movable member 3 and the rod pad 12 to move the movable member 3 away from the rod pad 12. The detection rod 16 is pushed against the elastic element 4 that extends into the recessed hole. The extrusion cake detection structure also includes an alarm 5 and two conductive plates 6 electrically connected to the alarm 5. The outer periphery of the movable element 3 is wrapped with a bushing. Along the sliding direction of the movable element 3, the bushing is divided into an insulating part and a conductive part. The two conductive plates 6 are fixedly installed on the side wall of the accommodating cavity 2 and contact the bushing. When the first side of the extrusion cake 17 abuts against the extrusion rod 15, the detection rod 16 extends into the recessed hole, the movable element 3 is located away from the extrusion rod pad 12, the two conductive plates 6 contact the insulating part of the bushing, and the circuit of the alarm 5 is disconnected. When the second side of the extrusion cake 17 abuts against the extrusion rod 15, the second side pushes the movable element 3 to a position close to the extrusion rod pad 12 with the help of the detection rod 16, the two conductive plates 6 contact the conductive part of the bushing, and the circuit of the alarm 5 is connected.

[0027] Based on the above structural setup, during extrusion production, if the extruded cake 17 is placed correctly, the movable part 3 will always be in a position away from the extrusion rod pad 12, and the alarm 5 will not sound. However, when the extruded cake 17 is placed in reverse, the movable part 3 will be pushed to a position close to the extrusion rod pad 12, the alarm 5 will sound, and the staff will stop the machine in time to correct the error.

[0028] If an older extruder needs to add this type of extrusion cake detection structure, it is only necessary to process the receiving cavity 2 and the conductive sheet 6 for installing the alarm 5 on the extrusion rod pad 12, and then put a bushing on the extrusion rod 15. Since the extrusion rod pad 12 is much smaller in size and weight than the butterfly head 11, it is simpler to process the extrusion rod pad 12. At the same time, the cost of using the alarm 5 instead of the sensor is also lower, and there is no need to make complex controller circuit modifications or program settings. The modification is simple and low in cost, but the effect is excellent.

[0029] In this embodiment, the elastic element 4 is a spring disposed between the movable element 3 and the extrusion rod pad 12. Preferably, a guide post 21 is provided at the bottom of the accommodating cavity 2, the spring is sleeved on the outside of the guide post 21, and the movable element 3 is provided with a guide hole 33, which is slidably connected to the guide post 21. This structure allows the movable element 3 to tend to move away from the extrusion rod pad 12 and slide stably. In actual modification, the guide post 21 can be directly welded or screwed to the extrusion rod pad 12.

[0030] In this embodiment, the bushing includes an insulating ring 31 and a conductive ring 32 fitted over the insulating ring 31. The insulating ring 31 has a groove, and the conductive ring 32 is nested in the groove so that the outer surface of the insulating ring 31 is flush with the outer surface of the conductive ring 32. The flush outer surfaces allow the conductive sheet 6 to slide smoothly back and forth between the insulating ring 31 and the conductive ring 32, extending the life of the conductive sheet 6. The conductive ring 32, fitted over the outer surface of the insulating ring 31, prevents the conductive ring 32 from contacting the metal extrusion rod 15, thus preventing problems with the electrical conduction of the alarm 5. In this embodiment, the insulating ring 31 is a ceramic ring, and the conductive ring 32 is a copper ring. The ceramic ring is insulating, heat-resistant, and wear-resistant, making it suitable for the application scenario in this embodiment.

[0031] In this embodiment, the extrusion rod pad 12 has a through hole or groove for the wire 7 of the alarm 5 to pass through, and the extrusion rod cover 14 has a through hole or groove for the wire 7 of the alarm 5 to pass through. The alarm 5 is installed on the extrusion rod cover 14. Based on the above configuration, during modification, it is only necessary to open through holes or grooves in the extrusion rod pad 12 and the extrusion rod cover 14 to allow the wire 7 to extend out to connect to the alarm 5. This structure can be completed with simple machining, making modification convenient and easy to operate.

[0032] In this embodiment, the alarm 5 is an alarm light and / or a buzzer, and the alarm 5 has its own power supply. Using an alarm light and / or a buzzer in the alarm 5 provides a better warning effect and is also less expensive. In addition, for safety, the alarm 5 can be directly equipped with a power supply, which eliminates the need to modify the circuit of the extruder. Of course, it is also possible to modify the circuit of the extruder to bring out wires to power the alarm 5.

[0033] In summary, this extrusion cake detection structure can detect whether the extrusion cake is placed backwards. It has a simple structure and can be implemented on older extruders with simple modifications. Of course, this extrusion cake detection structure is also applicable to newer extruders.

[0034] Where there is no conflict, the above embodiments and features can be combined with each other.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A cake extrusion detection structure, comprising a butterfly head (11), wherein a rod pad (12), a rod bushing (13), and a rod cap (14) are sequentially installed on one side of the butterfly head (11), the rod bushing (13) presses the first end of a rod (15) against the rod pad (12), the rod (15) extends out from the rod cap (14), the rod (15) is provided with an axial through hole, a detection rod (16) is slidably connected in the through hole, the second end of the rod (15) abuts against a cake (17), the first side of the cake (17) is provided with a concave hole into which the detection rod (16) can extend, and the second side is a plane, characterized in that: A receiving cavity (2) with an opening facing the extrusion rod (15) is provided in the middle of the extrusion rod pad (12). A movable member (3) that can slide along the axial direction of the extrusion rod (15) is provided in the receiving cavity (2). The movable member (3) abuts against the detection rod (16). An elastic member (4) is provided between the movable member (3) and the extrusion rod pad (12) to make the movable member (3) move away from the extrusion rod pad (12) and push the detection rod (16) into the recess. The extrusion cake detection structure also includes an alarm (5) and two conductive plates (6) electrically connected to the alarm (5). The outer periphery of the movable part (3) is wrapped with a bushing. Along the sliding direction of the movable part (3), the bushing is divided into an insulating part and a conductive part. The two conductive plates (6) are fixedly installed on the side wall of the accommodating cavity (2) and in contact with the bushing. When the first side of the extrusion cake (17) abuts against the extrusion rod (15), the detection rod (16) extends into the concave hole, the movable part (3) is located away from the extrusion rod pad (12), the two conductive plates (6) contact the insulating part of the bushing, and the circuit of the alarm (5) is disconnected. When the second side of the extrusion cake (17) abuts against the extrusion rod (15), the second side uses the detection rod (16) to push the movable part (3) to a position close to the extrusion rod pad (12), the two conductive plates (6) contact the conductive part of the bushing, and the circuit of the alarm (5) is connected.

2. The extrusion cake detection structure according to claim 1, characterized in that: The elastic element (4) is a spring disposed between the movable element (3) and the extrusion rod pad (12).

3. The extrusion cake detection structure according to claim 2, characterized in that: The bottom of the accommodating cavity (2) is provided with a guide post (21), and a spring is sleeved on the outside of the guide post (21). The movable part (3) is provided with a guide hole (33), and the guide hole (33) is slidably connected to the guide post (21).

4. The extrusion cake detection structure according to claim 1, characterized in that: The bushing includes an insulating ring (31) and a conductive ring (32) sleeved on the outside of the insulating ring (31). The insulating ring (31) is provided with a groove and the conductive ring (32) is nested in the groove so that the outer surface of the insulating ring (31) is flush with the outer surface of the conductive ring (32).

5. The extrusion cake detection structure according to claim 4, characterized in that: The insulating ring (31) is a ceramic ring, and the conductive ring (32) is a copper ring.

6. The extrusion cake detection structure according to claim 1, characterized in that: The extrusion rod pad (12) has a through hole or groove through which the wire (7) of the alarm (5) passes, and the extrusion rod cover (14) has a through hole or groove through which the wire (7) of the alarm (5) passes. The alarm (5) is installed on the extrusion rod cover (14).

7. The extrusion cake detection structure according to any one of claims 1 to 6, characterized in that: The alarm (5) is an alarm light and / or a buzzer, and the alarm (5) has its own power supply.

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