Fixed-distance triggering device of graphite electrode shearing machine

Abstract

The fixed-distance triggering device of the graphite electrode shearing machine comprises a graphite electrode extruding machine, the graphite electrode shearing machine and a graphite electrode moving tray which are installed in a mutually matched mode, and a graphite electrode body green body extruded from the graphite electrode extruding machine is conveyed on the graphite electrode moving tray. The device is characterized by further comprising an L-shaped positioning frame fixed to the side of the graphite electrode moving tray, a graphite electrode body green body is extruded through an extruding machine and slides on the moving tray to make contact with the length measuring position triggering assembly, then the first proximity switch is induced, and a shearing signal is transmitted to the PLC; then the graphite electrode shearing machine and the graphite electrode extruder are controlled to be matched through the PLC, fixed-distance shearing of the graphite electrode is achieved, the fixed-distance shearing precision of the graphite electrode is improved, meanwhile, overlong protection of a green body extruded by the extruder is achieved through induction matching of the movable triggering assembly and the second proximity switch, and a shearing tool is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite electrode shearing, in particular to a fixed-distance triggering device for a graphite electrode shearing machine. Background Art

[0002] A graphite electrode refers to a high-temperature-resistant graphite conductive material made of petroleum coke and needle coke as aggregates and coal tar pitch as a binder through processes such as raw material calcination, crushing and grinding, batching, kneading, forming, roasting, impregnation, graphitization, and machining, called an artificial graphite electrode (abbreviated as graphite electrode) to distinguish it from a natural graphite electrode prepared from natural graphite as raw material.

[0003] During the production of graphite electrodes, they need to be formed by an extruder and then cut at a fixed distance. When cutting with a graphite electrode shearing machine, it is necessary to fix the cutting position of the graphite electrode to ensure that the length of each extruded graphite electrode green body is accurate enough to meet the quality requirements for the final graphite electrode to leave the factory.

[0004] Therefore, in view of the deficiencies of the prior art, it is very necessary to provide a fixed-distance triggering device for a graphite electrode shearing machine to solve the deficiencies of the prior art. Content of the Utility Model

[0005] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a fixed-distance triggering device for a graphite electrode shearing machine. The fixed-distance triggering device for the graphite electrode shearing machine slides the extruded graphite electrode body green body on the moving tray to touch and trigger the length measurement position triggering component, thereby inducing the first proximity switch, transmitting a shearing signal to the PLC controller, and then controlling the graphite electrode shearing machine and the graphite electrode extruder to cooperate through the PLC controller to achieve fixed-distance shearing of the graphite electrode, improving the fixed-distance shearing accuracy of the graphite electrode. At the same time, through the cooperation of the movable triggering component and the second proximity switch, over-length protection of the extruded green body of the extruder is achieved, preventing damage to the shearing tool.

[0006] The above object of the utility model is achieved by the following technical means.

[0007] Provide a fixed-distance triggering device for a graphite electrode shearing machine, including a graphite electrode extruder, a graphite electrode shearing machine, and a graphite electrode moving tray that are installed in cooperation with each other. The graphite electrode moving tray conveys the extruded graphite electrode body green body from the graphite electrode extruder. It is characterized in that: it further includes an L-shaped positioning frame fixed on the side of the graphite electrode moving tray. The L-shaped positioning frame is provided with a positioning installation surface, and the positioning installation surface is located above the graphite electrode moving tray;

[0008] A side-sliding positioning chute is fixedly installed on the positioning installation surface. A positioning slider is slidably installed inside the side-sliding positioning chute. One side of the positioning slider away from the positioning installation surface is bolted with an equipment fixing plate. Two horizontally arranged installation slots are opened on the equipment fixing plate. An external bolt positioning sleeve is movably installed inside each installation slot. A first proximity switch and a second proximity switch are respectively movably installed inside the two external bolt positioning sleeves. An activity triggering assembly and a limit baffle are also installed on the equipment fixing plate, and the activity triggering assembly is also in movable triggering cooperation with the first proximity switch and the second proximity switch at the same time;

[0009] Both the first proximity switch and the second proximity switch are electrically connected to the PLC controller. The PLC controller is also electrically connected to the graphite electrode extruder and the graphite electrode shearer at the same time.

[0010] Specifically, the activity triggering assembly includes a positioning shaft. The positioning shaft is installed on the side of the equipment fixing plate away from the positioning slider. A rotating shaft sleeve is rotatably installed on the positioning shaft. A bent connecting plate and a T-shaped triggering plate are installed on the rotating shaft sleeve at the same time. One end of the bent connecting plate away from the rotating shaft sleeve is fixedly installed with a triggering push tube. The T-shaped triggering plate is in movable triggering cooperation with the first proximity switch and the second proximity switch.

[0011] Preferably, the triggering push tube is in movable cooperation with one end end of the green body of the graphite electrode body. The T-shaped triggering plate is provided with a first triggering part and a second triggering part. The first triggering part is in movable triggering cooperation with the first proximity switch, and the second triggering part is in movable triggering cooperation with the second proximity switch.

[0012] Specifically, a locking screw is fixedly installed on the positioning slider. A locking nut is spirally installed on the locking screw. The locking nut is in pressing cooperation with the side-sliding positioning chute.

[0013] Furthermore, a scale is installed on the L-shaped positioning frame. A pointer is fixedly installed on the positioning slider. The pointer and the scale cooperate with each other.

[0014] Specifically, the limiting component includes a fixing plate. The fixing plate is installed on the side of the equipment fixing plate away from the positioning slider. A support rod is fixedly installed on the fixing plate. The bent connecting plate and the support rod are in movable abutting cooperation.

[0015] In the utility model, the green body of the graphite electrode body extruded by the extruder slides on the moving tray and touches and collides with the length measuring position triggering component, thereby triggering the first proximity switch, transmitting a shearing signal to the PLC controller, and then controlling the graphite electrode shearer and the graphite electrode extruder to cooperate with each other through the PLC controller to realize the fixed-distance shearing of the graphite electrode, improving the fixed-distance shearing precision of the graphite electrode. At the same time, the activity triggering component is in induction cooperation with the second proximity switch to realize the over-length protection of the extruded green body of the extruder and prevent the shearing tool from being damaged. Description of the Drawings

[0016] The present utility model will be further described with reference to the accompanying drawings, but the content in the drawings does not constitute any limitation to the present utility model.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a fixed-distance triggering device of a graphite electrode shearing machine of the present utility model, which is cooperatively installed with a graphite electrode extruding machine, a graphite electrode shearing machine, a graphite electrode moving tray, and a PLC controller.

[0018] Figure 2 It is an enlarged schematic diagram at position A of a fixed-distance triggering device of a graphite electrode shearing machine of the present utility model.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the installation of a positioning slider and a side-sliding positioning chute of a fixed-distance triggering device of a graphite electrode shearing machine of the present utility model.

[0020] From Figures 1 to 3 it includes:

[0021] 1. Graphite electrode extruding machine;

[0022] 2. Graphite electrode shearing machine;

[0023] 3. Graphite electrode moving tray;

[0024] 4. Green body of graphite electrode body;

[0025] 5. L-shaped positioning frame;

[0026] 6. Positioning installation surface;

[0027] 7. Side-sliding positioning chute;

[0028] 8. Positioning slider;

[0029] 9. Equipment fixing plate;

[0030] 10. Installation slot hole;

[0031] 11. Outer bolt positioning sleeve;

[0032] 12. First proximity switch;

[0033] 13. Second proximity switch;

[0034] 14. Movable trigger assembly;

[0035] 141. Positioning shaft, 142. Rotating shaft sleeve, 143. Bent connecting plate, 144. T-shaped trigger plate, 145. Trigger top pipe, 146. First trigger part, 147. Second trigger part;

[0036] 15. Limiting assembly;

[0037] 16. PLC controller;

[0038] 17. Locking screw;

[0039] 18. Locking nut;

[0040] 19. Scale;

[0041] 20. Pointer;

[0042] 21. Fixed plate;

[0043] 22. Support rod. Detailed implementation mode

[0044] The present utility model will be further described in conjunction with the following embodiments.

[0045] Embodiment 1.

[0046] As Figures 1 - 3 shown, a fixed-distance triggering device for a graphite electrode shearing machine includes a graphite electrode extruder 1, a graphite electrode shearing machine 2 and a graphite electrode moving tray 3 which are installed in cooperation with each other. A green body 4 of a graphite electrode body extruded from the graphite electrode extruder 1 is conveyed on the graphite electrode moving tray 3. It is characterized in that: it further includes an L-shaped positioning frame 5 fixed on the side of the graphite electrode moving tray 3. A positioning mounting surface 6 is provided on the L-shaped positioning frame 5, and the positioning mounting surface 6 is located above the graphite electrode moving tray 3.

[0047] This application is used for fixed-distance cutting and triggering of the forming extrusion of graphite electrodes. First, the production of graphite electrodes is extruded and formed by the graphite electrode extruder 1. The extruded graphite electrode body falls on the conveyor belt for transmission. When it reaches a certain length, it is sheared by the graphite electrode shearing machine 2. This application is fixed through the mounting surface of the L-shaped positioning frame 5, and then it is in abutting cooperation with the green body 4 of the graphite electrode body extruded from the graphite electrode to achieve the fixed-distance triggering and shearing effect.

[0048] A side-sliding positioning chute 7 is fixedly installed on the positioning mounting surface 6. A positioning slider 8 is slidably installed inside the side-sliding positioning chute 7. On the side of the positioning slider 8 away from the positioning mounting surface 6, a device fixed plate 219 is bolted. Two horizontally arranged mounting holes 10 are provided on the device fixed plate 219. An external bolt positioning sleeve 11 is movably installed inside each mounting hole 10. A first proximity switch 12 and a second proximity switch 13 are respectively movably installed inside the two external bolt positioning sleeves 11. A cooperating movable triggering assembly 14 and a limit baffle are also installed on the device fixed plate 219. The movable triggering assembly 14 is also in movable triggering cooperation with the first proximity switch 12 and the second proximity switch 13.

[0049] The equipment fixing plate 219 is installed on the positioning slider 8 through bolts to achieve horizontal side-sliding displacement, thereby realizing the adjustment of the horizontal position, changing the fixed-distance length of the graphite electrode. The outer bolt sleeve is fixed through the installation slot hole 10 and the nut gasket, etc. Then, the first proximity switch 12 and the second proximity switch 13 can be movably clamped inside the bolt sleeve for fixation. The movable trigger assembly 14 is in top-moving cooperation with the green body 4 of the graphite electrode body to change the position, thereby triggering the first proximity switch 12 and the second proximity switch.

[0050] Both the first proximity switch 12 and the second proximity switch 13 are electrically connected to the PLC controller 16. The PLC controller 16 is also electrically connected to the graphite electrode extruder 1 and the graphite electrode shearing machine 2.

[0051] When the movable trigger assembly 14 is pushed by the end of the green body 4 of the graphite electrode body to a specified position, the first proximity switch 12 is triggered. The first proximity switch 12 transmits a signal to the PLC controller 16. The PLC controller 16 sends a deceleration signal to the graphite electrode extruder 1, and the graphite electrode extruder 1 reduces the extrusion pressure, thereby achieving the effect of extrusion speed reduction. At the same time, the PLC controller 16 detects the extrusion pressure of the graphite electrode extruder 1. When the extrusion pressure decreases to a specified value, at this time, the second proximity switch 13 pauses working, and the PLC controller 16 sends a shearing signal to the graphite electrode shearing machine 2, so as to achieve fixed-distance shearing, which can not only ensure fixed-distance shearing, but also ensure the shearing effect of the graphite electrode, and avoid damage to the shearing knife due to the extrusion of the graphite electrode body.

[0052] When the PLC controller 16 detects that the extrusion pressure of the graphite electrode extruder 1 does not decrease, no shearing instruction is issued at this time, and the green body 4 of the graphite electrode body continues to move forward. When the movable trigger assembly 14 triggers the second proximity switch 13, the PLC controller 16 detects the extrusion pressure of the graphite electrode extruder 1 again. If the extrusion pressure still does not decrease, the PLC controller 16 cancels the automatic shearing mode of the graphite electrode shearing machine 2, reduces the extrusion pressure of the graphite electrode extruder 1 through the manual mode, and then performs manual shearing.

[0053] The movable trigger assembly 14 includes a positioning shaft 141. The positioning shaft 141 is installed on the side of the equipment fixing plate 219 away from the positioning slider 8. A rotating shaft sleeve 142 is rotatably installed on the positioning shaft 141. A bent connecting plate 143 and a T-shaped trigger plate 144 are installed on the rotating shaft sleeve 142 at the same time. One end of the bent connecting plate 143 away from the rotating shaft sleeve 142 is fixedly installed with a trigger top pipe 145. The T-shaped trigger plate 144 is in movable trigger cooperation with the first proximity switch 12 and the second proximity switch 13.

[0054] The activity trigger component 14 is triggered by the green body 4 of the graphite electrode body sliding horizontally on the graphite electrode moving tray 3. When the green body 4 of the graphite electrode body is extruded from the graphite electrode extruder 1, it will slide on the conveyor belt. As the green body 4 of the graphite electrode body moves, at the fixed-distance position where the activity trigger component 14 is located, one end of the green body 4 of the graphite electrode body contacts the trigger push tube 145, pushing the trigger push tube 145 to move, and then driving the bent connecting plate 143 to rotate. The bent connecting plate 143 drives the rotating shaft sleeve 142 to rotate, and the T-shaped trigger plate 144 on the rotating shaft sleeve 142 will generate a rotational displacement. As the displacement distance of the green body 4 of the graphite electrode body increases, the T-shaped trigger plate 144 will first reach the sensing area of the first proximity switch 12. At this time, it reaches the fixed-distance shearing position of the green body 4 of the graphite electrode body. The PLC controller 16 detects whether the graphite electrode extruder 1 reduces the pressure to the specified value. If it meets the standard, the graphite electrode shearing machine 2 will shear the green body 4 of the graphite electrode body.

[0055] The trigger push tube 145 is movably matched with one end of the green body 4 of the graphite electrode body. The T-shaped trigger plate 144 is provided with a first trigger part 146 and a second trigger part 147. The first trigger part 146 is movably triggered and matched with the first proximity switch 12, and the second trigger part 147 is movably triggered and matched with the second proximity switch 13.

[0056] The area range of the first trigger part 146 is relatively large and will first sense the first proximity switch 12, and then the second trigger part 147 reaches the sensing area of the second proximity switch 13.

[0057] A locking screw 17 is fixedly installed on the positioning slider 8, and a locking nut 18 is spirally installed on the locking screw 17. The locking nut 18 is in pressing fit with the side-sliding positioning chute 7.

[0058] By the spiral displacement of the locking nut 18, the positioning slider 8 can be pressed against the side-sliding positioning chute 7 to fix the position of the positioning slider 8.

[0059] A scale 19 is installed on the L-shaped positioning frame 5, and a pointer 20 is fixedly installed on the positioning slider 8. The pointer 20 and the scale 19 cooperate with each other.

[0060] The cooperation between the pointer 20 and the scale 19 can facilitate the precise adjustment of the length of the fixed-distance cutting.

[0061] The limiting component 15 includes a fixing plate 21. The fixing plate 21 is installed on the side of the equipment fixing plate 219 away from the positioning slider 8. A support rod 22 is fixedly installed on the fixing plate 21. The bent connecting plate 143 and the support rod 22 are in movable abutting fit.

[0062] The limiting component 15 prevents the bent connecting plate 143 from generating excessive displacement due to its own inertia through the support rod 22, playing a role of abutting and limiting.

[0063] In the present utility model, the extrusion transfer displacement of the green body 4 of the graphite electrode body on the graphite electrode moving tray 3 jacks up the movable trigger assembly 14, thereby inducing the first proximity switch 12, transmitting a shearing signal to the PLC controller 16, and then controlling the graphite electrode shearing machine 2 and the graphite electrode extruding machine 1 to cooperate through the PLC controller 16 to achieve the fixed-distance shearing of the graphite electrode, improving the fixed-distance shearing accuracy of the graphite electrode. At the same time, the shearing protection of the shearing machine is realized through the induction cooperation of the movable trigger assembly 14 and the second proximity switch 13, preventing damage to the shearing tool.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A fixed-distance triggering device for a graphite electrode shearing machine, comprising a graphite electrode extruder, a graphite electrode shearing machine and a graphite electrode moving tray which are installed in cooperation with each other. The graphite electrode blank as extruded from the graphite electrode extruder is conveyed on the graphite electrode moving tray. It is characterized in that: It further includes an L-shaped positioning frame fixed to the side of the moving tray of the graphite electrode. There is a positioning and mounting surface on the L-shaped positioning frame, and the positioning and mounting surface is located above the moving tray of the graphite electrode. A side-sliding positioning chute is fixedly installed on the positioning and mounting surface. A positioning slider is slidably installed inside the side-sliding positioning chute. A device fixing plate is bolted to the side of the positioning slider away from the positioning and mounting surface. Two horizontally arranged mounting slots are provided on the device fixing plate. An external bolt positioning sleeve is movably installed inside each mounting slot. A first proximity switch and a second proximity switch are respectively movably installed inside the two external bolt positioning sleeves. A matching movable triggering component and a limiting component are also installed on the device fixing plate. The movable triggering component is also in movable triggering cooperation with the first proximity switch and the second proximity switch. Both the first proximity switch and the second proximity switch are electrically connected to a PLC controller. The PLC controller is also electrically connected to the graphite electrode extruder and the graphite electrode shearer.

2. The fixed-distance triggering device of a graphite electrode shearing machine according to claim 1, characterized in that: The movable triggering component includes a positioning shaft installed on the side of the device fixing plate away from the positioning slider. A rotating shaft sleeve is rotatably installed on the positioning shaft. A bent connecting plate and a T-shaped triggering plate are installed on the rotating shaft sleeve at the same time. A triggering top tube is fixedly installed at the end of the bent connecting plate away from the rotating shaft sleeve. The T-shaped triggering plate is in movable triggering cooperation with the first proximity switch and the second proximity switch.

3. The fixed-distance triggering device of a graphite electrode shearing machine according to claim 2, characterized in that: The triggering top tube is in movable cooperation with one end of the green body of the graphite electrode body. The T-shaped triggering plate is provided with a first triggering portion and a second triggering portion. The first triggering portion is in movable triggering cooperation with the first proximity switch, and the second triggering portion is in movable triggering cooperation with the second proximity switch.

4. A fixed-distance triggering device for a graphite electrode shearing machine according to claim 3, characterized in that: A locking screw is fixedly installed on the positioning slider. A locking nut is screwed onto the locking screw, and the locking nut is in pressing cooperation with the side-sliding positioning chute.

5. A fixed-distance triggering device for a graphite electrode shearing machine according to claim 4, characterized in that: A scale is installed on the L-shaped positioning frame. A pointer is fixedly installed on the positioning slider, and the pointer cooperates with the scale.

6. The fixed-distance triggering device of a graphite electrode shearing machine according to claim 5, characterized in that: The limiting component includes a fixing plate installed on the side of the device fixing plate away from the positioning slider. A support rod is fixedly installed on the fixing plate, and the bent connecting plate is in movable abutting cooperation with the support rod.

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