Electrode tip die repairing clamping jaw mechanism and electrode tip grinding tool

Abstract

The utility model discloses an electrode tip reshaping clamping jaw mechanism and an electrode tip reshaping tool, the electrode tip reshaping clamping jaw mechanism comprises a clamping jaw and a polishing mechanism, the polishing mechanism comprises a plurality of connecting supports, the top of each connecting support is installed on a claw finger of the clamping jaw; the multiple first grinding heads are installed on the connecting support and form a first grinding cavity, and the friction contact faces of the first grinding heads face inwards; the second grinding heads are mounted on the grinding head base and form a second grinding cavity, and the friction contact surfaces of the second grinding heads face inwards; and the grinding head bases are mounted at the bottom of the connecting bracket. According to the electrode tip grinding device, the electrode tips can be efficiently ground, the first grinding heads and / or the second grinding heads are combined into the annular array, and the grinding effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding tools, in particular to an electrode head die repair clamping claw mechanism and an electrode head grinding tool. Background Art

[0002] The polysilicon reduction furnace is used to produce polysilicon. Several electrode heads are arranged at the bottom of the polysilicon reduction furnace. Polysilicon grows on the electrode heads. After the growth is completed, the polysilicon is removed from the electrode heads. Oxide residues will remain on the electrode heads. The oxide residues will affect subsequent production. Therefore, it is necessary to regularly grind off the oxide residues on the surface of the electrode heads. In the past, the oxide residues on the surface of the electrode heads were polished manually. This process consumes a lot of manpower and has poor grinding consistency. Therefore, it is urgent to design an automated electrode head grinding tool. Utility Model Content

[0003] The utility model provides an electrode head die repairing clamping claw mechanism and an electrode head grinding tooling to solve the technical problems in the above-mentioned prior art.

[0004] The technical solution adopted by the utility model is: in the first aspect, an electrode head die repairing clamping mechanism is provided, comprising: a clamping jaw and a grinding mechanism, wherein the grinding mechanism comprises:

[0005] a plurality of connecting brackets, the tops of which are mounted on the claw fingers of the gripper;

[0006] A plurality of grinding head bases are mounted on the bottom of the connecting bracket;

[0007] A plurality of first grinding heads are mounted on the connecting bracket to form a first grinding cavity, the first grinding heads can be arranged in a circular array, and the friction contact surface of the first grinding heads faces inward; and / or a plurality of second grinding heads are mounted on the grinding head base to form a second grinding cavity, the second grinding heads can be arranged in a circular array, and the friction contact surface of the second grinding heads faces inward.

[0008] Furthermore, it also includes an elastic connection mechanism, and the second grinding head is installed on the grinding head base through the elastic connection mechanism, so that when the second grinding head is subjected to radial pressure, a radial resilience force is provided to the second grinding head.

[0009] Furthermore, the elastic connection mechanism includes: a spring shaft, a spring and a latch; a radial groove, an axial through hole and a radial countersunk hole are provided on the grinding head base, and the radial groove is arranged from the inside to the outside; the axial through hole is located in the radial groove, and the diameter of the axial through hole is larger than the diameter of the latch; the radial countersunk hole is arranged from the outside to the inside, and the radial countersunk hole is communicated with the axial through hole; the second grinding head is provided with an axial pin hole, and the second grinding head is located in the radial groove; the latch is installed in the axial pin hole and is located in the axial through hole; the spring shaft is threadedly connected to the end of the radial countersunk hole; the spring is located between the spring shaft and the latch.

[0010] Furthermore, the connecting bracket includes a third bracket and a second bracket, the second bracket is provided with a radial adjustment groove, the radial adjustment groove is provided with a radial adjustment hole, the third bracket is installed on the radial adjustment groove, and radial adjustment of the third bracket and the second bracket is achieved through the radial adjustment hole.

[0011] Furthermore, the clamp is a three-finger clamp.

[0012] In a second aspect, an electrode tip mold repair tool is provided, comprising:

[0013] Pedestal;

[0014] Positioning indicating mechanism, used for positioning detection of the electrode head;

[0015] The driving mechanism is installed on the base and is used to drive the clamping mechanism as described in the first aspect to rotate and grind the electrode head.

[0016] Furthermore, the driving mechanism comprises:

[0017] A motor, fixedly mounted above the base;

[0018] An electrical slip ring, comprising a stationary part and a rotating part, wherein the stationary part is connected to the base;

[0019] A first connecting shaft is fixedly connected to the rotating part of the electrical slip ring, and the motor drives the first connecting shaft to rotate through a gear set;

[0020] A connecting tube, fixedly installed below the base;

[0021] The rotating shaft is rotatably connected to the connecting cylinder via a bearing located inside the connecting cylinder. The top end of the rotating shaft passes through a through hole in the middle of the base and is fixedly connected to the first connecting shaft. The bottom end of the rotating shaft is fixedly connected to the clamping claw.

[0022] Furthermore, it also includes a positioning ring, which is arranged at the through hole in the middle of the base and is used to position the connecting tube and the electrical slip ring.

[0023] Furthermore, the positioning indication mechanism includes: a cylinder, a first bracket, a positioning detection block and a positioning ejector pin, the cylinder is fixed on the base through the first bracket, the positioning ejector pin passes through the through hole in the middle of the clamp, the through hole in the middle of the rotating shaft, and the through hole in the middle of the first connecting shaft and is connected to the telescopic shaft of the cylinder, and the positioning detection block is installed at the bottom of the positioning ejector pin.

[0024] Furthermore, it also includes protective covers installed above and below the base, and exhaust pipes are arranged in the protective covers.

[0025] Furthermore, a sealing ring is provided between the connecting tube and the rotating shaft.

[0026] The beneficial effects of the utility model are as follows: the electrode head mold repairing tool of the utility model can realize efficient grinding of the electrode head, and the first grinding head and / or the second grinding head can be combined into a ring array respectively, so the grinding effect is good. The setting of the positioning detection block and the positioning ejector pin ensures the accuracy of positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the electrode head mold repair tooling disclosed in the utility model;

[0028] Figure 2 It is a structural schematic diagram of the electrode head mold repair tooling disclosed in the utility model with the protective cover removed;

[0029] Figure 3 It is a cross-sectional view of the electrode head mold repair tool disclosed in the utility model;

[0030] Figure 4 It is a cross-sectional view of the connecting tube part disclosed in the utility model;

[0031] Figure 5 It is a structural schematic diagram of the grinding mechanism disclosed in the utility model;

[0032] Figure 6 It is a partial cross-sectional view of the grinding head base and the second grinding head disclosed in the utility model;

[0033] Figure 7 It is a structural schematic diagram of the second bracket disclosed in the utility model;

[0034] Figure 8 Schematic diagram of the structure of the electrode head.

[0035] Figure markings: 1-base, 11-handle, 12-exhaust pipe, 13-first bracket, 14-positioning ring, 2-protective cover, 3-motor, 31-first connecting shaft, 4-cylinder, 41-positioning detection block, 42-positioning ejector pin, 43-locking nut, 5-electrical slip ring, 6-connecting cylinder, 61-bearing, 62-sealing ring, 7-rotating shaft, 8-clamp, 9-grinding mechanism, 91-second bracket, 911-radial adjustment groove, 912-axial adjustment hole, 92-third bracket, 93-first grinding head, 94-grinding head base, 941-radial slide groove, 942-axial through hole, 943-radial countersunk hole, 95-second grinding head, 951-pin, 952-axial pin hole, 96-spring shaft, 97-spring. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings, but the embodiments of the utility model are not limited thereto. It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be a centered element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a centered element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0037] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0038] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0039] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] Embodiment 1:

[0041] The electrode head at the bottom of the polysilicon reduction furnace is as follows Figure 8 As shown, it is a rotating body, and its shape is similar to that of a seal. The purpose of this application is to grind away the oxide residue on the surface of the electrode head. To this end, this embodiment discloses an electrode head mold repairing clamping claw mechanism, see Figure 2 , Figure 5-Figure 7, which comprises: a clamping jaw 8 and a grinding mechanism 9, wherein the grinding mechanism 9 comprises: a plurality of connecting brackets, the top of which is mounted on the claw of the clamping jaw 8; a plurality of first grinding heads 93, which are mounted in the middle of the connecting bracket to form a circular array, and the friction contact surface of the first grinding heads 93 is inward; a plurality of grinding head bases 94, which are mounted at the bottom of the connecting bracket; a plurality of second grinding heads 95, which are mounted on the grinding head bases 94 to form a circular array, and the friction contact surface of the second grinding heads 95 is inward. The first grinding heads 93 and the second grinding heads 95 cooperate with each other, and can be separate or integrated; they can also be used independently as needed.

[0042] The first grinding head 93 can grind the upper part of the electrode head, and the second grinding head 95 can grind the lower part of the electrode head. The clamping jaw 8 can be driven to rotate by an external rotating device to realize automatic grinding of the electrode head. Since the electrode head has various models and slightly different shapes, the curvature of the first grinding head 93 and the second grinding head 95 can be designed specifically so that the first grinding head 93 and the second grinding head 95 fit the outer surface of the electrode head as much as possible.

[0043] Furthermore, in order to achieve flexible contact between the grinding head and the electrode head, the second grinding head 95 and the grinding head base 94 can be connected by an elastic connection mechanism, which can provide radial resilience to the second grinding head 95 when the second grinding head 95 is subjected to radial pressure.

[0044] As an optional implementation, see Figure 6 The elastic connection mechanism includes: a spring shaft 96, a spring 97 and a latch 951; the grinding head base 94 is provided with a radial groove 941, an axial through hole 942 and a radial countersunk hole 943, the radial groove 941 is arranged from the inside to the outside ("inside" refers to the center of the annular array, and "radial" refers to the center of the annular array); the axial through hole 942 is located in the radial groove 941 ("axial" refers to the direction of the rotation center line when grinding the electrode head, which is basically equal to the vertical direction), and the axial through hole 942 is straight The diameter of the radial counterbore 943 is larger than the diameter of the plug 951; the radial counterbore 943 is arranged from outside to inside, and the radial counterbore 943 is communicated with the axial through hole 942; one implementation scheme of the second grinding head 95 is a C-shaped structure, on which an axial pin hole 952 is arranged, and the second grinding head 95 is located in the radial slide groove 941; the plug 951 is installed in the axial pin hole 952 and is located in the axial through hole 942; the spring shaft 96 is threadedly connected to the end of the radial counterbore 943; the spring 97 is located between the spring shaft 96 and the plug 951. Since the diameter of the axial through hole 942 is larger than the diameter of the plug 951, the plug 951 can shake radially in the axial through hole 942. Under the action of the spring 97, a radial thrust is always given to the plug 951, so that the second grinding head 95 can achieve flexible contact when contacting the electrode head.

[0045] Further, the connecting bracket includes a third bracket 92 and a second bracket 91, the second bracket 91 is provided with a radial adjustment groove 911, the radial adjustment groove 911 is provided with a radial adjustment hole (i.e. waist-shaped hole), the third bracket 92 is installed on the radial adjustment groove 911, and the radial adjustment of the third bracket 92 and the second bracket 91 is achieved through the radial adjustment hole. Figure 1 If a protective shell is provided on the outer cover of the clamping mechanism, the distance between the second grinding head 95 and the bottom end surface of the protective shell can be adjusted through the radial adjustment hole.

[0046] Preferably, the clamping jaw 8 is a three-finger clamping jaw 8; correspondingly, the number of grinding mechanisms 9 is also three, which are respectively installed on the three fingers of the clamping jaw.

[0047] Embodiment 2:

[0048] See also Figure 2-Figure 3 This embodiment discloses an electrode head mold repair tool, including: a base 1; a positioning indication mechanism for positioning and detecting the electrode head; a driving mechanism installed on the base 1 and used to drive the clamping mechanism described in Example 1 to rotate and grind the electrode head.

[0049] As an optional embodiment, the driving mechanism includes: a motor 3, fixedly mounted above the base 1; an electrical slip ring 5, including a stationary part and a rotating part, the stationary part being fixedly mounted on the base 1; a first connecting shaft 31, fixedly mounted on the rotating part of the electrical slip ring 5, the motor 3 drives the first connecting shaft 31 to rotate through a gear set; a connecting cylinder 6, fixedly mounted below the base 1; a rotating shaft 7, rotatably connected to the connecting cylinder 6 through a bearing 61 located inside the connecting cylinder 6, the top of the rotating shaft 7 passes through a through hole in the middle of the base 1 and is fixedly connected to the first connecting shaft 31; the bottom of the rotating shaft 7 is fixedly connected to the clamp 8. The electrical slip ring 5, the first connecting shaft 31, the rotating shaft 61 and the clamp 8 are provided with a passage matching the air supply pipe, and the air pipe will not be interfered by rotation. Specifically, the first connecting shaft 31 is also provided with an air hole, and the air supply pipe is led out from the rotating part of the electrical slip ring 5 and inserted into the airway provided on the rotating shaft 61, and then enters the corresponding interface in the clamp 8.

[0050] The electrical slip ring 5 realizes the circuit connection and the gas circuit connection. The upper part of the rotating shaft 7 is provided with an external thread, the bottom is a flange structure, and the middle part is hollow. The middle part of the first connecting shaft 31 is hollow and provided with an internal thread. The first connecting shaft 31 is threadedly connected to the rotating shaft 7. Figure 4The bearing 61 preferably adopts a tapered roller bearing 61, and there are two of them. The upper tapered roller bearing 61 is tightened by a locking nut 43 threadedly connected to the rotating shaft 7, and the outer ring is interference-fitted with the stepped hole at the top of the connecting tube 6. A positioning ring 14 is also provided at the through hole in the middle of the base 1. The positioning ring 14 is used to position the connecting tube 6 and the electrical slip ring 5 on the one hand, so that the axis of the connecting tube 6 coincides with the rotation center line; on the other hand, it can also be used to limit the outer ring of the upper tapered roller bearing 61. The outer ring of the lower tapered roller bearing 61 is interference-fitted with the stepped hole below the connecting tube 6, and the inner ring is limited by the rotating shaft 7. A sealing ring 62 (i.e., an oil seal) is provided between the flange end faces at the bottom of the connecting tube 6 and the bottom of the rotating shaft 7.

[0051] As an optional implementation, see Figure 3 The positioning indicating mechanism includes: a cylinder 4, a first bracket 13, a positioning detection block 41 and a positioning ejector pin 42. The cylinder 4 is fixed on the base 1 through the first bracket 13. The positioning ejector pin 42 passes through the through hole in the middle of the clamp 8, the through hole in the middle of the rotating shaft 7, and the through hole in the middle of the first connecting shaft 31 and is connected to the telescopic shaft of the cylinder 4. The positioning detection block 41 is installed at the bottom of the positioning ejector pin 42, and the positioning detection distance is a certain distance from the bottom end of the positioning ejector pin 42. Figure 8 A through hole is provided in the middle of the electrode head, and the positioning ejector pin 42 is located on the rotation center line. When the cylinder 4 extends downward, the positioning ejector pin 42 is inserted into the through hole of the electrode head. At this time, the positioning detection block 41 is pressurized and sends a signal, indicating that it is in place. At this time, the motor 3 can drive the dumb film mechanism to rotate and grind the electrode head.

[0052] For further information, see Figure 1 A protective cover 2 is installed above and below the base 1. An exhaust pipe 12 is arranged inside the protective cover 2. The exhaust pipe 12 is installed on the base 1 and communicates with the space below the base 1, so that the rust powder in the protective cover 2 below is sucked away.

[0053] Furthermore, a handle 11 is provided on the base 1 to facilitate manual handling and manual grinding of the electrode head. In addition, the electrode head mold repair tooling can be connected to an industrial robot through a clamp, and automatic grinding can be performed by the industrial robot.

[0054] The electrode head trimming tool of this embodiment can realize efficient grinding of the electrode head, and the grinding effect is good by combining the first grinding head 93 and the second grinding head 95 into a ring array. The positioning detection block 41 and the positioning ejector pin 42 ensure the accuracy of positioning.

[0055] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. The various technical features can be combined arbitrarily without conflict. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An electrode head die repairing clamping jaw mechanism, characterized in that: include: The clamping jaws and the grinding mechanism include: a plurality of connecting brackets, the tops of which are mounted on the claw fingers of the gripper; A plurality of grinding head bases are mounted on the bottom of the connecting bracket; A plurality of first grinding heads are mounted on the connecting bracket to form a first grinding cavity, and the friction contact surface of the first grinding heads faces inward; and / or a plurality of second grinding heads are mounted on the grinding head base to form a second grinding cavity, and the friction contact surface of the second grinding heads faces inward.

2. The electrode head die repairing clamping jaw mechanism according to claim 1, characterized in that: It also includes an elastic connection mechanism, through which the second grinding head is mounted on the grinding head base, so that when the second grinding head is subjected to radial pressure, a radial resilience force is provided to the second grinding head.

3. The electrode head die repairing clamping jaw mechanism according to claim 2, characterized in that: The elastic connection mechanism includes: a spring shaft, a spring and a latch; a radial groove, an axial through hole and a radial countersunk hole are provided on the grinding head base, and the radial groove is arranged from the inside to the outside; the axial through hole is located in the radial groove, and the diameter of the axial through hole is larger than the diameter of the latch; the radial countersunk hole is arranged from the outside to the inside, and the radial countersunk hole is communicated with the axial through hole; the second grinding head is provided with an axial pin hole, and the second grinding head is located in the radial groove; the latch is installed in the axial pin hole and is located in the axial through hole; the spring shaft is threadedly connected to the end of the radial countersunk hole; the spring is located between the spring shaft and the latch.

4. The electrode tip die repairing clamping jaw mechanism according to claim 1, characterized in that: The connecting bracket includes a third bracket and a second bracket, the second bracket is provided with a radial adjustment groove, the radial adjustment groove is provided with a radial adjustment hole, the third bracket is installed on the radial adjustment groove, and radial adjustment of the third bracket and the second bracket is achieved through the radial adjustment hole.

5. An electrode tip grinding tool, characterized in that: include: Pedestal; Positioning indicating mechanism, used for positioning detection of the electrode head; A driving mechanism is installed on the base and is used to drive the clamping mechanism as described in any one of claims 1 to 4 to rotate and grind the electrode head.

6. The electrode tip grinding tool according to claim 5, characterized in that: The driving mechanism comprises: A motor, fixedly mounted above the base; An electrical slip ring, comprising a stationary part and a rotating part, wherein the stationary part is connected to the base; A first connecting shaft is fixedly connected to the rotating part of the electrical slip ring, and the motor drives the first connecting shaft to rotate through a gear set; A connecting tube, fixedly installed below the base; The rotating shaft is rotatably connected to the connecting cylinder via a bearing located inside the connecting cylinder, the top of the rotating shaft passes through the through hole in the middle of the base and is fixedly connected to the first connecting shaft; the bottom of the rotating shaft is fixedly connected to the clamping claw; The electrical slip ring, the first connecting shaft, the rotating shaft and the clamping jaws are provided with matching passages for the air supply pipe to pass through, and the air pipe will not be interfered by the rotation.

7. The electrode tip grinding tool according to claim 6, characterized in that: It also includes a positioning ring, which is arranged at the through hole in the middle of the base and is used to position the connecting cylinder and the electrical slip ring.

8. The electrode tip grinding tool according to claim 6, characterized in that: The positioning indicating mechanism includes: a cylinder, a first bracket, a positioning detection block and a positioning ejector pin. The cylinder is fixed on the base through the first bracket. The positioning ejector pin passes through a through hole in the middle of the clamping jaw, a through hole in the middle of the rotating shaft, and a through hole in the middle of the first connecting shaft to be connected with the telescopic shaft of the cylinder. The positioning detection block is installed at the bottom of the positioning ejector pin.

9. The electrode tip grinding tool according to claim 5, characterized in that: The utility model also comprises protective covers which are installed above and below the base, and an exhaust pipe is arranged in the protective covers.

10. The electrode tip grinding tool according to claim 6, characterized in that: A sealing ring is arranged between the connecting cylinder and the rotating shaft.

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