Edge grinding gun for capacitor shell blank

Abstract

The edge grinding gun comprises a gun body and a grinding rod, a grab handle of the gun body can be conveniently held by a single hand, the grinding rod is installed on the front portion of the gun body, the grinding rod can rotate, the rotating speed of the grinding rod can be controlled, and when the edge grinding gun is used, the grinding rod makes contact with the inner edge or the outer edge to be ground at the opening end of a capacitor shell and rotates relative to the inner edge or the outer edge to be ground. The edge grinding gun further comprises a rotating shaft which is a hollow shaft with a shaft hole, the grinding rod is provided with a mounting handle coaxial with the grinding rod, an elastic rubber cake is arranged in the shaft hole of the rotating shaft, an inserting hole is formed in the center of the rubber cake, the periphery of the rubber cake is fixed to the inner wall of the shaft hole, and the mounting handle of the grinding rod is inserted and fixed into the inserting hole. And the grinding rod can elastically shake to a certain extent. The device has the advantages that compared with the prior art, the replacement frequency is greatly reduced, so that the grinding processing has continuity, and the grinding efficiency can be obviously improved; waste of grinding consumables (grinding rods and abrasive paper) can be avoided; the polishing operation is safer; and the gun has multiple purposes and is convenient to use.

Description

Technical Field

[0001] The invention relates to a capacitor housing blank edge grinding gun, belonging to the technical field of metal blank grinding processing. Background Art

[0002] The capacitor housing is generally cylindrical or rectangular, with at least one end being open. The two right-angled edges of the inner and outer sides of the open end of the stamped capacitor housing where the end face intersects with the inner and outer walls need to be properly rounded to eliminate the flash and burrs left by stamping and shearing. The traditional grinding method is to manually grind with sandpaper repeatedly. For a cylindrical capacitor housing, the capacitor housing is first installed on a rotating seat to rotate the capacitor housing along its own axis. At the same time, the sandpaper is manually held in contact with the capacitor housing to be ground, and the grinding is performed by using the high-speed rotation of the capacitor housing and the friction with the sandpaper.

[0003] The disadvantages of the above-mentioned edge grinding method are: 1. The sandpaper needs to be replaced after it is ground flat, and the replacement frequency is high, which lacks continuity in work and reduces the grinding efficiency; 2. Not all replaced sandpaper has been worn out, so discarding it will cause a certain amount of waste; 3. There is a risk of finger injury when using the swivel seat. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to efficiently grind the right-angle edge of the opening end of the capacitor shell.

[0005] In view of the above problems, the technical solution proposed by the present invention is: A capacitor housing blank edge grinding gun comprises a gun body with a handle that is convenient for one-handed gripping, and a grinding rod installed at the front of the gun body. The grinding rod can rotate and its rotation speed can be controlled. When in use, the grinding rod contacts the inner edge or outer edge to be ground of the capacitor housing opening end and rotates relatively.

[0006] The edge grinding gun further comprises a rotating shaft, which is mounted on the gun body via a bearing, and the grinding rod is mounted on the rotating shaft.

[0007] The rotating shaft is a hollow shaft with an axial hole, and the grinding rod has a mounting handle coaxial with the rotating shaft. A rubber cake with elastic force is arranged in the axial hole of the rotating shaft. The center of the rubber cake has an insertion hole, and its periphery is fixed to the inner wall of the axial hole. The mounting handle of the grinding rod is inserted into and fixed in the insertion hole, so that the grinding rod can make a certain degree of elastic shaking.

[0008] The upper and lower surfaces between the insertion hole of the rubber cake and the outer periphery of the rubber cake are formed into annular depressions facing each other, so that the thickness of the rubber cake in the annular area becomes thinner.

[0009] The diameter of the upper end of the grinding rod is greater than the diameter of the lower end.

[0010] The above-mentioned edge grinding gun also includes an air supply pipeline.

[0011] The rotating shaft is provided with an impeller, and a plurality of pneumatic blades are provided on the outer periphery of the impeller. The gun body is provided with an air nozzle 1 which sprays air toward the pneumatic blades on one side of the impeller, so as to decelerate the rotating grinding rod or rotate the grinding rod. The air nozzle 1 is connected to the air supply pipeline.

[0012] A valve switch is provided on the gun body in front of the handle, which can be used to control the air flow of the air nozzle by turning with the thumb.

[0013] A second air nozzle for blowing chips into the capacitor housing is also provided at the front end of the gun body, and the second air nozzle is communicated with the air supply pipeline.

[0014] A valve switch 2 is arranged under the gun body in front of the handle, and the size of the air flow of the air nozzle 2 can be controlled by pressing the index finger. Beneficial Effects

[0015] 1. Since the grinding rod is more wear-resistant than sandpaper, compared with the existing technology, the replacement frequency is greatly reduced, making the grinding process sustainable and significantly improving the grinding efficiency; 2. Since the grinding rod is only replaced when it is completely worn out and can no longer be used, it can avoid the waste of grinding consumables (grinding rods and sandpaper); 3. Since the grinding rod is installed on the gun body, the processing personnel's hands do not need to directly approach the grinding tool, making the grinding operation very safe; 4. One gun has multiple uses (it can grind two types of shells and blow away the debris), and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The cylindrical capacitor housing blank and the rectangular capacitor housing blank to be polished as described in the present application; Figure 2 A three-dimensional schematic diagram of the edge grinding gun for which Benqing is seeking protection; Figure 3 for Figure 1 A partial schematic diagram of Figure 4 is a three-dimensional schematic diagram of the rubber cake; Figure 5 It is a cross-sectional diagram of the assembled rotating shaft, bearing, pneumatic blade, rubber cake, grinding rod and mounting handle; Figure 6 It is a cross-sectional schematic diagram of the assembled rotating shaft, bearing, pneumatic blade, rubber cake, grinding rod, and mounting handle, and the figure shows that the rubber cake can be deformed to make the grinding rod and its mounting handle swing to one side; Figure 7A schematic diagram of the structure of the gas supply pipeline and related components; Figure 8 A three-dimensional schematic diagram of a grinding rod grinding the inner edge of a capacitor housing.

[0017] In the figure: 1. gun body; 101. handle; 2. rotating shaft; 201. bearing; 202. pneumatic blade; 3. rubber cake; 201. insertion hole; 4. grinding rod; 401. mounting handle; 5. air supply pipeline; 6. air nozzle 1; 601. valve switch 1; 7. air nozzle 2; 701. valve switch 2; 8. rotating seat; 9. capacitor housing; 901. inner edge; 902. outer edge. DETAILED DESCRIPTION

[0018] like Figure 1 Shown are a cylindrical capacitor housing 9 and a rectangular capacitor housing 9 to be edged in the present application.

[0019] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1

[0020] like Figure 2 , 3 Combined with Figure 1 As shown, a capacitor housing blank edge grinding gun includes a gun body 1 having a handle 101 that is convenient for one-handed gripping, and a grinding rod 4 installed at the front of the gun body 1. The grinding rod 4 can rotate and the speed can be controlled. When in use, the operator can hold the handle 101 with one hand, so that the grinding rod 4 contacts the inner edge 901 or the outer edge 902 to be ground at the open end of the capacitor housing 9 and rotates relatively, thereby eliminating the flash and burrs on the inner edge 901 and the outer edge 902 of the open end of the capacitor housing 9. Since the grinding rod 4 is more wear-resistant than sandpaper, it will only be replaced when it is completely worn out and cannot be used. Therefore, compared with the prior art, it not only greatly reduces the replacement frequency, makes the grinding process continuous, and can significantly improve the grinding efficiency, but also can avoid the waste of grinding consumables (grinding rod and sandpaper). Since the grinding rod 4 is installed on the gun body 1, the processing personnel's hands do not need to directly approach the grinding tool, which also makes the grinding operation very safe.

[0021] The edge grinding gun further comprises a rotating shaft 2, which is mounted on the gun body 1 via a bearing 201, and a grinding rod 4 is mounted on the rotating shaft 2. When in use, the grinding rod 4 is driven to rotate by the rotation of the rotating shaft.

[0022] like Figure 2As shown in FIG. 6 , further, the rotating shaft 2 is a hollow shaft with an axial hole, the grinding rod 4 has a mounting handle 401 coaxial with itself, the axial hole of the rotating shaft 2 is provided with an elastic rubber cake 3, the center of the rubber cake 3 has an insertion hole 301, and its periphery is fixed to the inner wall of the axial hole, and the mounting handle 401 of the grinding rod 4 is inserted and fixed in the insertion hole 301, so that the grinding rod 4 can make a certain range of elastic shaking. The grinding rod 4 can be in flexible contact with the inner edge 901 or the outer edge 902 of the open end of the capacitor housing 9 to be ground, avoiding excessive wear of the capacitor housing 9 during hard contact.

[0023] The upper and lower surfaces between the insertion hole 301 of the rubber cake 3 and the outer periphery of the rubber cake 3 are formed into annular depressions facing each other, so that the thickness of the rubber cake 3 in the annular area becomes thinner, which can further increase the flexibility of the rubber cake 3.

[0024] The diameter of the upper end of the grinding rod 4 is larger than the diameter of the lower end. When grinding, the grinding rod 4 is continuously dragged axially, which can continuously change the contact area between the grinding rod 4 and the inner edge 901 and the outer edge 902 to be ground of the capacitor housing 9, so as to obtain a specific grinding effect. When grinding, it is not necessary to slide the grinding rod 4 to the lower end every time, so as to avoid the grinding rod 4 from slipping off the inner edge 901 and the outer edge 902 to be ground, and the grinding rod 4 can basically achieve synchronous exhaustion of the upper and lower parts.

[0025] like Figure 7 As shown, the edge grinding gun also includes an air supply pipeline 5.

[0026] An impeller is provided on the rotating shaft 2, and a plurality of pneumatic blades 202 are provided on the outer periphery of the impeller. An air nozzle 6 is provided on the gun body 1 to spray air toward the pneumatic blades 202 on one side of the impeller, so as to decelerate the rotating grinding rod 4 or rotate the grinding rod. The air nozzle 6 is connected to the air supply pipeline 5. Furthermore, a valve switch 601 is provided on the gun body 1 in front of the handle 101, and the air flow size of the air nozzle 6 can be controlled by rotating the thumb.

[0027] Based on the above settings, the edge grinding gun has two ways of use: 1. Grinding the inner edge 901 and the outer edge 902 of the opening end of the cylindrical capacitor housing 9 using the rotating seat 8: like Figure 2 , 8 As shown, the capacitor housing 9 is mounted on the rotating seat 8, so that the capacitor housing 9 rotates at high speed around the axis of the capacitor housing 9 itself under the driving force of the rotating seat 8; The edge grinding gun handle 101 is held in one hand to make the grinding rod contact with the inner edge 901 or the outer edge 902 of the opening end of the capacitor housing 9. Under the action of friction, the grinding rod and its rotating shaft 2 will rotate with the capacitor housing 9. At this time, the thumb of the hand holding the edge grinding gun handle 101 is used to turn the valve switch 601, so that the airflow ejected from the air nozzle 6 acts on the pneumatic blades 202 of the impeller, and a force opposite to the rotation direction is appropriately applied to the rotating shaft 2, so that the linear speed of the rotating shaft 2 is smaller than the linear speed of the inner edge 901 or the outer edge 902 of the opening end of the capacitor housing 9, that is, the linear speed of the outer peripheral surface of the grinding rod 4 is smaller than the linear speed of the inner edge 901 or the outer edge 902, so that the outer peripheral surface of the grinding rod 4 forms relative friction with the inner edge 901 or the outer edge 902, thereby realizing the grinding of flash or burrs.

[0028] 2. Grinding of the inner edge 901 and the outer edge 902 of the opening end of the rectangular capacitor housing 9: like Figure 2 Combined with Figure 1 As shown, the edge grinding gun handle 101 is held in one hand, and the thumb of the hand holding the edge grinding gun handle 101 is used to turn the valve switch 601, so that the airflow ejected from the air nozzle 6 acts on the pneumatic blades 202 of the impeller, so that the rotating shaft 2 rotates at a high speed, and then the grinding rod is brought into contact with the inner edge 901 or the outer edge 902 of the opening end of the capacitor housing 9 to directly perform grinding. Embodiment 2

[0029] like Figure 1 , 7 As shown, the front end of the gun body 1 is also provided with an air nozzle 7 for blowing chips into the capacitor housing 9, and the air nozzle 7 is connected to the air supply pipeline 5. A valve switch 701 that can be used to control the air flow of the air nozzle 7 by pressing the index finger is provided under the gun body 1 in front of the handle 101. When in use, the valve switch 701 is pressed with the index finger to make the air nozzle 7 spray out air to blow away the chips dropped by grinding inside and outside the capacitor housing 9.

[0030] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the protection scope of the present invention. Any modifications in equivalent forms should be regarded as falling within the protection scope of the present invention.

Claims

1. A capacitor housing blank edge grinding gun, characterized in that: The invention comprises a gun body (1) having a handle (101) which is convenient for one-handed gripping, and a grinding rod (4) mounted on the front of the gun body (1). The grinding rod (4) is capable of rotating and its rotation speed can be controlled. When in use, the grinding rod (4) contacts and relatively rotates with an inner edge (901) or an outer edge (902) to be ground at an open end of a capacitor housing (9).

2. The capacitor housing blank edge grinding gun according to claim 1, characterized in that: It also comprises a rotating shaft (2), the rotating shaft (2) being mounted on the gun body (1) via a bearing (201), and the grinding rod (4) being mounted on the rotating shaft (2).

3. The capacitor housing blank edge grinding gun according to claim 2, characterized in that: The rotating shaft (2) is a hollow shaft having an axial hole. The grinding rod (4) has a mounting handle (401) coaxial with the rotating shaft (2). A rubber cake (3) with elasticity is arranged in the axial hole of the rotating shaft (2). The center of the rubber cake (3) has an insertion hole (301), and its periphery is fixed to the inner wall of the axial hole. The mounting handle (401) of the grinding rod (4) is inserted into and fixed in the insertion hole (301), so that the grinding rod (4) can make a certain range of elastic shaking.

4. The capacitor housing blank edge grinding gun according to claim 3, characterized in that: The upper and lower surfaces between the insertion hole (301) of the rubber cake (3) and the outer periphery of the rubber cake (3) are formed into annular depressions facing each other, so that the thickness of the rubber cake (3) in the annular area becomes thinner.

5. The capacitor housing blank edge grinding gun according to claim 1, characterized in that: The diameter of the upper end of the grinding rod (4) is greater than the diameter of the lower end.

6. The capacitor housing blank edge grinding gun according to claim 2, characterized in that: It also includes an air supply pipeline (5).

7. The capacitor housing blank edge grinding gun according to claim 6, characterized in that: The rotating shaft (2) is provided with an impeller, and a plurality of pneumatic blades (202) are provided on the outer periphery of the impeller. The gun body (1) is provided with an air nozzle (6) for spraying air toward the pneumatic blades (202) on one side of the impeller, so as to decelerate the rotating grinding rod (4) or rotate the grinding rod. The air nozzle (6) is connected to the air supply pipeline (5).

8. The capacitor housing blank edge grinding gun according to claim 7, characterized in that: A valve switch (601) is provided on the gun body (1) in front of the handle (101) and can be used to control the air flow of the air nozzle (6) by rotating with the thumb.

9. The capacitor housing blank edge grinding gun according to claim 6, characterized in that: A second air nozzle (7) for blowing chips into the capacitor housing (9) is also provided at the front end of the gun body (1); the second air nozzle (7) is connected to the air supply pipeline (5).

10. The capacitor housing blank edge grinding gun according to claim 6, characterized in that: A valve switch 2 (701) is provided under the gun body (1) in front of the handle (101) and can be pressed by an index finger to control the air flow of the air nozzle 2 (7).

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