Double-bin isolation type tungsten needle sharpening machine

Abstract

The utility model belongs to the technical field of tungsten needle sharpening machines, and particularly discloses a double-bin isolation type tungsten needle sharpening machine which comprises a machine body, an output end cover of the machine body is provided with an angle scale to form a grinding bin, and a grinding wheel is contained in the grinding bin and rotationally connected with the machine body through a rotating shaft. The rotating shaft is in sealed connection with the machine body through a wool pad, the machine body is in sealed connection with a dustproof cover through an O-shaped ring, the angle scale is located in the dustproof cover, an insertion hole of the dustproof cover is communicated with the grinding bin through a machining hole of the angle scale, and a plurality of exhaust ports are formed in the outer wall of the machine body at intervals in the radial direction of the machine body. And the plurality of exhaust ports are communicated with a driving bin of the machine body. According to the double-bin isolation type tungsten needle sharpening machine, the grinding bin and the driving bin are completely isolated, grinding dust is prevented from damaging a bearing and a motor, the service life of a product is prolonged, and the stability of the product is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tungsten needle sharpening machines, in particular to a double-bin isolation type tungsten needle sharpening machine. Background Art

[0002] Tungsten electrodes are widely used in welding due to their high melting point, corrosion resistance, high density, good thermal and electrical conductivity. Different welding situations also have specific requirements for the length, diameter and sharp angle of tungsten electrodes. Tungsten electrodes (i.e. tungsten needles) are usually sharpened using handheld sharpening machines, such as sharpening, flattening and cutting.

[0003] The existing handheld sharpening machine has a loose dust cover, and the exhaust port is set along the axial direction of the dust cover (facing the dust cover). During normal use of the sharpening machine, the gas discharged from the exhaust port will directly impact the dust cover, making the dust cover looser, causing the dust generated after the tungsten needle is ground to directly enter the head of the drive compartment, causing damage to the bearing, and then easily causing damage to the motor.

[0004] Therefore, the inventor is committed to designing a sharpening machine to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a double-chamber isolation type tungsten needle sharpening machine, which can prevent dust generated after grinding from entering the driving chamber, prevent damage to the bearing and the motor, and improve the service life and stability of the product.

[0006] In order to achieve the above object, a technical solution adopted by the utility model is:

[0007] A double-chamber isolation type tungsten needle sharpening machine comprises a machine body, the output end cover of the machine body is provided with an angle disk to form a grinding chamber, a grinding wheel is accommodated in the grinding chamber, the grinding wheel is rotatably connected to the machine body through a rotating shaft, the rotating shaft is sealed to the machine body through a wool pad, the machine body is sealed with a dust cover through an O-ring, the angle disk is located in the dust cover, the jack of the dust cover is connected to the grinding chamber through the processed hole of the angle disk, a plurality of exhaust ports are provided on the outer wall of the machine body along its radial interval, and the plurality of exhaust ports are connected to the driving chamber of the machine body.

[0008] As an improvement of the double-chamber isolation type tungsten needle sharpening machine of the utility model, the machine body includes a machine body, a bearing cover and a positioning seat, the output end of the machine body extends outward to form a bearing seat, the bearing cover is arranged on the bearing seat to form the driving chamber, and the positioning seat is superimposed on the bearing cover.

[0009] As an improvement of the double-chamber isolation type tungsten needle sharpening machine of the utility model, the wool pad is arranged on the rotating shaft and is located between the positioning seat and the bearing cover.

[0010] As an improvement of the double-chamber isolation type tungsten needle sharpening machine of the utility model, the rotating shaft passes through the positioning seat, the rotating shaft is provided with a locking hole along its radial direction, and the positioning seat is provided with a plug-in hole along its radial direction corresponding to the position of the locking hole, and the locking hole and the plug-in hole are both located between the grinding wheel and the wool pad.

[0011] As an improvement of the double-chamber isolation type tungsten needle sharpening machine of the utility model, the lower end of the angle plate is sleeved on the positioning seat and covers the entrance of the plug hole.

[0012] As an improvement of the double-chamber isolation type tungsten needle sharpening machine of the utility model, a plurality of exhaust holes are provided on the bearing cover, and the plurality of exhaust ports are arranged one by one on the side walls of the plurality of exhaust holes, and the exhaust ports are connected with the driving chamber through the corresponding exhaust holes.

[0013] As an improvement of the double-chamber isolation type tungsten needle sharpening machine of the utility model, the rotating shaft is rotatably connected to the bearing cover through a bearing, the bottom of the bearing cover is concave and fixed with a supporting plate, and the outer ring of the bearing is located on the supporting plate.

[0014] As an improvement of the double-chamber isolated tungsten needle sharpening machine of the utility model, a cooling fan is rotatably connected in the bearing seat, the grinding wheel and the cooling fan are synchronously rotatably connected with the machine body through the rotating shaft, and the multiple exhaust ports are located between the cooling fan and the O-ring.

[0015] As an improvement of the double-chamber isolation type tungsten needle sharpening machine of the utility model, a disassembly groove is provided at the edge of the grinding end surface of the positioning seat, and the disassembly groove is located outside the grinding wheel.

[0016] Compared with the prior art, the double-chamber isolation type tungsten needle sharpening machine of the utility model seals the rotating shaft with the machine body through a wool pad, and seals the dust cover with the machine body with an O-ring, thereby achieving the purpose of completely isolating the double chambers (i.e., the grinding chamber and the driving chamber), preventing the dust generated by grinding in the grinding chamber from entering the driving chamber, preventing damage to the bearings and the motor in the driving chamber, and at the same time, an exhaust port is arranged along the radial direction of the machine body to prevent the exhausted gas from directly impacting the dust cover and loosening the dust cover, thereby improving the service life and stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional enlarged view of the double-chamber isolation type tungsten needle sharpening machine of the utility model;

[0018] Figure 2It is a three-dimensional enlarged view of the double-chamber isolation type tungsten needle sharpening machine of the utility model, with the dust cover in the open state;

[0019] Figure 3 It is a three-dimensional exploded enlarged view of the machine body, angle plate and dust cover of the utility model;

[0020] Figure 4 It is a three-dimensional exploded view of the double-chamber isolation type tungsten needle sharpening machine of the utility model;

[0021] Figure 5 It is a three-dimensional enlarged view of the body of the utility model and various parts on the rotating shaft;

[0022] Figure 6 It is a three-dimensional enlarged view of the bearing cover of the utility model;

[0023] Figure 7 It is the main view and partial cross-sectional enlarged view of the double-chamber isolation type tungsten needle sharpening machine of the utility model;

[0024] Figure 8 It is a partial cross-sectional enlarged view of the double-chamber isolation type tungsten needle sharpening machine of the utility model.

[0025] Illustration Description:

[0026] 1. Body; 11. Bearing seat; 111. Body; 12. Cooling fan; 13. Rotating shaft; 131. Bearing; 132. Wool pad; 133. Locking hole; 14. Side hole; 15. Support plate; 2. Grinding wheel; 21. Locking screw; 3. Bearing cover; 31. Exhaust hole; 311. Exhaust port; 32. Disassembly slot; 4. Positioning seat; 41. Plug-in hole; 5. O-ring; 6. Angle plate; 61. Sharpened processing hole; 62. Ground processing hole; 63. Cutting slot; 7. Dust cover; 71. Sharpened socket; 72. Ground socket; 8. Grinding chamber; 81. Drive chamber. DETAILED DESCRIPTION

[0027] The following is a detailed explanation of the implementation of the present invention in conjunction with the accompanying drawings. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention.

[0028] Reference Figures 1 to 8A double-chamber isolation type tungsten needle sharpening machine includes a body 111, an angle disc 6, a grinding wheel 2 and a dust cover 7. The angle disc 6 is covered at the output end of the body 111 to form a grinding chamber 8. The grinding wheel 2 is accommodated in the grinding chamber 8. The grinding wheel 2 is rotatably connected to the body 111 through a rotating shaft 13. The rotating shaft 13 is sealed to the body 111 through a wool pad 132. The dust cover 7 is sealed to the body 111 through an O-ring 5. The angle disc 6 is located in the dust cover 7. The jack of the dust cover 7 is connected to the grinding chamber 8 through the processing hole of the angle disc 6. A plurality of exhaust ports 311 are provided on the outer wall of the body 111 along its radial interval. The plurality of exhaust ports 311 are connected to the driving chamber 81 of the body 111.

[0029] Reference Figure 3 and Figure 4 The machine body 111 includes a machine body 1, a bearing cover 3 and a positioning seat 4. The output end of the machine body 1 extends outward to form a bearing seat 11. The bearing cover 3 is covered on the bearing seat 11 to form the driving compartment 81. The positioning seat 4 is superimposed on the bearing cover 3.

[0030] Reference Figure 5 and Figure 8 The top of the fuselage 1 is hollowed out, the fuselage 1 and the bearing seat 11 are coaxially arranged and the two are integrally formed, the top of the bearing seat 11 is hollowed out, a cooling fan 12 is rotatably arranged in the bearing seat 11, a motor is arranged in the fuselage 1, the cooling fan 12 is located at the output end of the motor, the grinding wheel 2 and the cooling fan 12 are respectively located at both ends of the rotating shaft 13, the grinding wheel 2 and the cooling fan 12 are both connected to the fuselage 1 through the rotating shaft 13 for synchronous rotation, the motor can drive the rotating shaft 13 to rotate, and then drive the cooling fan 12 and the grinding wheel 2 to rotate synchronously, a groove is provided at the edge of the side wall of the bearing seat 11, the center of the grinding wheel 2 is fixed to the top of the rotating shaft 13 by a locking screw 21, and the rotating shaft 13 is provided with a locking hole 133 along its radial direction.

[0031] Reference Figures 3 to 8 A plurality of exhaust holes 31 are provided on the concave portion at the bottom of the bearing cover 3, and a plurality of exhaust ports 311 are arranged one by one on the side walls of the plurality of exhaust ports 31, and each exhaust port 311 is communicated with the drive compartment 81 through the corresponding exhaust hole 31. The rotating shaft 13 passes through the bearing cover 3 and is rotatably connected to the bearing cover 3 through a bearing 131. A supporting plate 15 is also fixed to the concave portion at the bottom of the bearing cover 3, and the outer ring of the bearing 131 is located on the supporting plate 15. The supporting plate 15 and the inner step of the bearing cover 3 are combined to form a circle of grooves, and the outer ring of the bearing 131 is located in the groove. The rotating shaft 13 passes through the inner ring of the bearing 131 so that the rotating shaft 13 is rotatably connected to the bearing cover 3. The O-ring 5 is sleeved on the outer wall of the bearing cover 3, and the plurality of exhaust ports 311 are located between the cooling fan 12 and the O-ring 5 and are arranged at intervals of a circle. The bottom surface of the bearing cover 3 and the notch on the side wall of the bearing seat 11 are combined to form a side hole 14.

[0032] Reference Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 The positioning seat 4 is superimposed on the bearing cover 3, the grinding wheel 2 is located at the top of the positioning seat 4, the rotating shaft 13 passes through the positioning seat 4, and the side wall of the positioning seat 4 is provided with a plug-in hole 41 corresponding to the position of the locking hole 133 along its radial direction. In this embodiment, two plug-in holes 41 are preferably provided on the side wall of the positioning seat 4, and the two plug-in holes 41 are coaxially arranged and correspond to the position of the locking hole 133 on the rotating shaft 13, so that the disassembly of the grinding wheel 2 becomes simpler and faster. The wool pad 132 is arranged on the rotating shaft 13 and located between the positioning seat 4 and the bearing cover 3, so that the positioning seat 4 and the bearing cover 3 can be sealed with the rotating shaft 13 through the same wool pad 132 to prevent the dust in the grinding chamber 8 from entering the driving chamber 81 from the rotating shaft 13. Two disassembly grooves 32 are inclined at the edge of the grinding end face of the positioning seat 4, and the positions of the two disassembly grooves 32 are opposite and are both located outside the grinding wheel 2, which solves the problem that the grinding wheel 2 is locked and cannot be removed due to the long-term use of the sharpening machine.

[0033] Reference Figure 2 , Figure 3 and Figure 4 The bottom of the angle disk 6 is hollowed out, and the angle disk 6 is covered on the positioning seat 4 to form the grinding chamber 8. The lower end of the angle disk 6 is sleeved on the positioning seat 4 and covers the entrances of the two plug-in holes 41, blocking the entrances of the two plug-in holes 41 to prevent excessive grinding dust from entering the plug-in holes 41. The locking hole 133 and the plug-in hole 41 are both located between the grinding wheel 2 and the wool pad 132 to prevent a small amount of grinding dust entering the plug-in hole 41 from entering the drive chamber 81 through the rotating shaft 13. Various processing holes are provided on the angle disk 6, which are specifically a plurality of groups of sharpened processing holes 61 and a plurality of flattened processing holes 62, wherein the plurality of groups of sharpened processing holes 61 are arranged at intervals on the side wall of the angle disk 6, and each group of sharpened processing holes 61 is arranged at intervals. In this embodiment, four groups of sharpened processing holes 61 are preferably used, and each group of sharpened processing holes The sharp processing hole 61 is preferably composed of four separate sharpening processing holes 61. The four groups of sharpening processing holes 61 can respectively process sharp angles of 30°, 40°, 50° and 60°. The four sharpening processing holes 61 in the same group can respectively be used to process tungsten needles with diameters of 2.0mm, 2.4mm, 3.2mm and 4.0mm. Each sharpening processing hole 61 is arranged at an angle. Multiple flattening processing holes 62 are located at the top of the angle disk 6 and are arranged in a circle, which can be used to flatten tungsten needles with diameters of 2.0mm, 2.4mm, 3.2mm and 4.0mm. In order to cut off the tungsten needle, the outer side walls of the angle disk 6 and the positioning seat 4 are also provided with notches and a certain cutting groove 63 is formed. The grinding wheel 2 is perpendicular to the cutting groove 63, and the tungsten needle extending into the cutting groove 63 can be cut off at the edge of the grinding wheel 2.

[0034] Reference Figure 1 , Figure 2 and Figure 8 The dust cover 7 is sleeved on the upper end of the bearing cover 3, and the inner wall of the dust cover 7 presses the O-ring 5 so that the dust cover 7 can be sealed and connected with the bearing cover 3. At the same time, the dust cover 7 is more firmly covered on the bearing cover 3. A flattened socket 72 is provided on the top of the dust cover 7, and a sharpened socket 71 is provided on the side wall of the dust cover 7. The dust cover 7, the angle plate 6, the positioning seat 4, the bearing cover 3, the grinding wheel 2, the cooling fan 12 and the bearing seat 11 are all coaxially arranged with the fuselage 1.

[0035] Reference Figure 1 As for Figure 8 The method of using the utility model double-chamber isolation type tungsten needle sharpening machine is as follows:

[0036] The motor is started, and the motor drives the cooling fan 12 and the grinding wheel 2 to rotate synchronously. The heat generated in the driving chamber 81 is discharged to the outside of the sharpening machine through the exhaust hole 31 along the radial direction of the bearing cover 3 under the action of the cooling fan 12;

[0037] When sharpening is required, the dust cover 7 is rotated to align the sharpening insertion hole 71 of the dust cover 7 with a sharpening processing hole 61 of the angle plate 6, and the end of the tungsten needle to be processed is tilted through the sharpening insertion hole 71 and the sharpening processing hole 61 in sequence and extended into the grinding chamber 8, so that the end of the tungsten needle to be processed is tilted to press against the rotating grinding wheel 2, and the tungsten needle is rotated at the same time, so that the end of the tungsten needle to be ground can be sharpened;

[0038] When grinding is required, the dust cover 7 is rotated to align the grinding hole 72 of the dust cover 7 with one of the grinding holes 62 on the top of the angle plate 6, and the end of the tungsten needle to be processed is vertically passed through the grinding hole 72 and the grinding hole 62 in sequence and extended into the grinding chamber 8, so that the bottom of the tungsten needle is pressed against the rotating grinding wheel 2, and the bottom of the tungsten needle can be ground flat;

[0039] When cutting is required, open the dust cover 7, insert the tungsten needle to be cut into the cutting groove 63 on the side wall of the angle plate 6 and the positioning seat 4, and cut the tungsten needle by using the rotating grinding wheel 2;

[0040] When the grinding wheel 2 needs to be replaced, turn off the motor, remove the angle disk 6, rotate the grinding wheel 2 to align the locking hole 133 of the rotating shaft 13 with the plug-in hole 41, insert the disassembly rod (a long round rod) from the plug-in hole 41 into the locking hole 133 to prevent the rotating shaft 13 from rotating, unscrew the locking screw 21, and use the two disassembly grooves 32 on the positioning seat 4 to pry open the grinding wheel 2, so that the grinding wheel 2 can be taken out, and then a new grinding wheel 2 can be installed, and the locking screw 21 can be re-screwed, and the disassembly rod can be pulled out. The replacement of the grinding wheel 2 is completed, and the angle disk 6 can be re-installed for normal use.

[0041] The double-chamber isolation type tungsten needle sharpening machine of the utility model is provided with a plurality of exhaust ports 311 on the side of the bearing seat 11, and an O-ring 5 is designed above the exhaust port 311 to seal the dust cover 7 and the bearing cover 3, and then combined with the wool pad 132, the rotating shaft 13 and the machine body 111 are sealed, so that the grinding chamber 8 and the driving chamber 81 are completely isolated, and the dust after the tungsten needle is ground into the interior of the machine body 111, causing damage to the bearing 131 and further causing damage to the motor is solved, thereby greatly improving the service life and stability of the product.

[0042] The double-chamber isolation type tungsten needle sharpening machine of the utility model solves the problem of no locking position when disassembling the grinding wheel 2 by setting a locking hole 133 on the rotating shaft 13 and a plug-in hole 41 on the positioning seat 4, making the disassembly of the grinding wheel 2 simpler and faster. At the same time, a disassembly groove 32 is added on the positioning seat 4 to solve the problem that the grinding wheel 2 is locked and cannot be removed for a long time.

[0043] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A double-chamber isolation type tungsten needle sharpening machine, comprising a machine body, characterized in that: The output end cover of the machine body is provided with an angle disk to form a grinding chamber, a grinding wheel is accommodated in the grinding chamber, the grinding wheel is rotatably connected to the machine body through a rotating shaft, the rotating shaft is sealed to the machine body through a wool pad, the machine body is sealed with a dust cover through an O-ring, the angle disk is located in the dust cover, the jack of the dust cover is connected to the grinding chamber through the processed hole of the angle disk, a plurality of exhaust ports are provided on the outer wall of the machine body along its radial intervals, and the plurality of exhaust ports are connected to the driving chamber of the machine body.

2. The double-chamber isolation type tungsten needle sharpening machine according to claim 1, characterized in that: The machine body comprises a body, a bearing cover and a positioning seat, the output end of the body extends outward to form a bearing seat, the bearing cover is arranged on the bearing seat to form the driving compartment, and the positioning seat is superimposed on the bearing cover.

3. The double-chamber isolation type tungsten needle sharpening machine according to claim 2, characterized in that: The wool pad is sleeved on the rotating shaft and is located between the positioning seat and the bearing cover.

4. The double-chamber isolation type tungsten needle sharpening machine according to claim 2, characterized in that: The rotating shaft passes through the positioning seat, the rotating shaft is provided with a locking hole along its radial direction, the positioning seat is provided with a plugging hole along its radial direction corresponding to the position of the locking hole, and the locking hole and the plugging hole are both located between the grinding wheel and the wool pad.

5. The double-chamber isolation type tungsten needle sharpening machine according to claim 4, characterized in that: The lower end of the angle plate is sleeved on the positioning seat and covers the entrance of the plug hole.

6. The double-chamber isolation type tungsten needle sharpening machine according to claim 2, characterized in that: The bearing cover is provided with a plurality of exhaust holes, and the plurality of exhaust ports are arranged on the side walls of the plurality of exhaust holes in a one-to-one correspondence, and the exhaust ports are connected with the drive compartment through the corresponding exhaust holes.

7. The double-chamber isolation type tungsten needle sharpening machine according to claim 2, characterized in that: The rotating shaft is rotatably connected to the bearing cover via a bearing. The bottom of the bearing cover is concave and fixed with a supporting plate. The outer ring of the bearing is located on the supporting plate.

8. The double-chamber isolation type tungsten needle sharpening machine according to claim 2, characterized in that: A cooling fan is rotatably connected inside the bearing seat, the grinding wheel and the cooling fan are rotatably connected with the fuselage synchronously via the rotating shaft, and a plurality of exhaust ports are located between the cooling fan and the O-ring.

9. The double-chamber isolation type tungsten needle sharpening machine according to claim 2, characterized in that: A disassembly groove is provided at the edge of the grinding end surface of the positioning seat, and the disassembly groove is located outside the grinding wheel.

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