Rapid grinding device for stainless steel conical surface sealing pipe nozzle

Abstract

The utility model discloses a quick grinding device for a stainless steel conical surface sealing pipe nozzle, which mainly comprises a grinding structure, a power system and a control system, the grinding structure comprises a threaded positioning sleeve, a grinding head, a spring, a bearing and a retainer ring, the threaded positioning sleeve is in threaded connection with the pipe nozzle, and the grinding head is connected with the power system. And the grinding head is matched with the bearing and the spring in the thread positioning sleeve to rotationally grind the conical surface. By means of the device, the problem of product defects generated in the production and manufacturing process and after use of the sealing pipe nozzle can be rapidly solved, the requirement for the sealing performance of products is met, a traditional manual grinding treatment scheme is replaced, and production efficiency is improved. The grinding device can be quickly expanded, and is suitable for grinding conical nozzles with different specifications by replacing grinding structures with different specifications.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment precision manufacturing and precision shape correction technology, in particular to a device for quickly grinding a sealing pipe nozzle with a stainless steel cone surface. Background Art

[0002] For products with conical sealing nozzles (including radiators, oil tanks and tubes, etc.), grinding the conical surface is an important processing process. Figure 6 A radiator product shown on the left side of the middle is mainly composed of several stainless steel components, and each component is formed by vacuum brazing or argon arc welding. The product is divided into two large cavities. The sealing performance of the two cavities is an important indicator of the product. This indicator requires that no leakage is allowed in the two cavities under a certain pressure and time. Affected by the welding and subsequent correction process of the product, the sealing nozzle of the product is very easy to deform, and the sealing method of the product nozzle is an extrusion deformation seal. After use, the nozzle sealing belt is very easy to be damaged, which has a great impact on the performance of the product. The current grinding and finishing process is manual grinding. Affected by human factors, the size and direction of manual force are difficult to control, which affects the coaxiality, resulting in low grinding efficiency and poor consistency. On April 24, 2017, the applicant submitted a utility model application entitled A Grinding Tool (CN207171779U), which discloses a manual grinding tool for nozzle cone sealing or end face sealing, but the grinding tool has the following limitations in actual use:

[0003] First, the tool can only grind the outer conical surface, and is not applicable to the inner conical surface;

[0004] Second, the tooling has no axial clamping force, and the grinding head is prone to axial floating during the grinding process, and must be manually clamped;

[0005] Third, the grinding paste between the grinding head and the conical surface is easily thrown out due to the centrifugal force. At the same time, the heat in the grinding process is not easy to transfer to the environment, which affects the grinding effect and easily causes damage to the grinding surface.

[0006] Fourth, it is difficult to operate in the case of compact nozzle distribution space;

[0007] Fifth, there is a lack of efficient grinding control devices.

[0008] Based on the above reasons, the applicant decided to improve and adjust the grinding tool. Summary of the invention

[0009] In view of the problems existing in the background technology, the utility model aims to provide a rapid grinding device for a stainless steel conical sealing nozzle, which can complete the grinding of the inner conical surface of the nozzle efficiently and with high quality, and can always maintain coaxial grinding during the grinding process, with uniform distribution of the grinding paste, smooth slag discharge, good heat dissipation effect, and not easy to damage the inner conical surface of the nozzle.

[0010] In order to solve the above problems, the utility model adopts the following technical solutions:

[0011] Stainless steel cone sealing nozzle quick grinding device, including:

[0012] A threaded positioning sleeve, wherein the threaded positioning sleeve is provided with a stepped through hole, the stepped through hole passes through two axial end faces of the threaded positioning sleeve, an inner wall of the stepped through hole is provided with an internal thread for matching the external thread of the nozzle, and a set screw hole is provided on the side of the threaded positioning sleeve;

[0013] A grinding head, the grinding head is inserted into the stepped through hole of the threaded positioning sleeve, the grinding head comprises a rotating shaft, one end of the rotating shaft is a conical grinding part, the other end is a joint, the outer surface of the conical grinding part comprises an outer conical surface, and a notch is opened on the outer conical surface;

[0014] A bearing, wherein the bearing is assembled in the stepped through hole of the threaded positioning sleeve, and the outer ring of the bearing cooperates with the inner wall of the stepped through hole, and the inner ring of the bearing is sleeved on the rotating shaft of the grinding head;

[0015] A spring, wherein the spring is sleeved on the rotating shaft of the grinding head, and one end of the spring is pressed against the end surface of the conical grinding portion of the grinding head, and the other end is pressed against the end surface of the bearing;

[0016] The set screw is inserted into the set screw hole of the threaded positioning sleeve, and the end of the set screw is pressed against the outer ring surface of the bearing.

[0017] As an option, the stainless steel cone seal nozzle quick grinding kit also includes:

[0018] A flexible shaft, a first end of which is detachably connected to a joint at one end of a rotating shaft on the grinding head;

[0019] A servo motor, wherein the output end of the servo motor is connected to the second end of the flexible shaft.

[0020] As an option, the stainless steel cone sealing nozzle rapid grinding device further comprises a controller, which is mainly composed of a touch screen, a power supply, a frequency converter, a contactor and a PLC, and the controller is electrically connected to the servo motor.

[0021] Furthermore, a heat dissipation hole is formed on the surface of the threaded positioning sleeve, and the heat dissipation hole penetrates through the side wall of the threaded positioning sleeve and is connected with the stepped through hole.

[0022] Furthermore, a spiral notch is formed on the outer conical surface of the conical surface grinding portion, and the notch extends from the large outer diameter end to the small outer diameter end of the outer conical surface.

[0023] As an option, the bearing is a double-row dustproof deep groove ball bearing.

[0024] As an option, the spring is a flat-ended cylindrical compression spring.

[0025] As an option, the conical grinding portion of the grinding head has at least one through hole, and the through hole intersects the rotation axis of the grinding head at right angles.

[0026] Compared with the prior art, the utility model has the following characteristics:

[0027] (1) The grinding structure is suitable for sealing the inner conical surface of the nozzle. When in use, the grinding device is connected to the outer thread of the nozzle through the inner thread of the threaded positioning sleeve. After screwing the threaded positioning sleeve, the grinding head is automatically aligned with the two conical surfaces of the nozzle (the outer conical surface of the conical surface grinding part and the inner conical surface of the nozzle) so that the two conical surfaces remain on the same axis. At the same time, the compression spring applies a constant axial pressure to the grinding head. The conical surface grinding part of the grinding head is provided with a spiral groove, which is conducive to storing grinding paste, slag removal, heat dissipation and lubrication, so as to avoid damage to the product caused by factors such as slag generated during the grinding process, large particles of grinding paste, uneven distribution of grinding paste and heat generated by grinding;

[0028] (2) A convenient power system is used to drive the grinding structure. The power system is mainly composed of a servo motor and a joint flexible shaft. According to the characteristics of the nozzle structure and the limited space structure, the axial direction and angle of the joint flexible shaft are adjusted to connect the grinding structure, so that the rotation force of the servo motor is smoothly and effectively transmitted to the grinding structure, avoiding manual intervention, ensuring the constant and stable grinding rotation. At the same time, by matching and replacing grinding structures of different specifications, nozzles of different specifications can be quickly ground;

[0029] (3) An effective control system is adopted. The control system is mainly composed of a touch screen, power supply, frequency converter, contactor, PLC, etc. By inputting relevant parameters, it is used to control the start and stop, rotation direction, speed, time setting and other functions of the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the assembly of the grinding device in the utility model;

[0031] Figure 2 This is a structural diagram of the threaded positioning sleeve in the utility model;

[0032] Figure 3 This is a structural diagram of the grinding head in the utility model;

[0033] Figure 4 This is a schematic diagram of the servo motor and flexible shaft structure in the utility model;

[0034] Figure 5 This is a schematic diagram of a grinding device with a control system and a driving system in the utility model;

[0035] Figure 6 This is a schematic diagram of the working state of the grinding device of the utility model;

[0036] In the figure: 1-threaded positioning sleeve; 2-grinding head; 3-flat-end cylindrical compression spring; 4-double-row dustproof deep groove ball bearing; 5-retaining ring; 6-setting screw; 7-flexible shaft; 8-servo motor; 9-controller. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0038] like Figure 1 to Figure 6 As shown, in this embodiment, a rapid grinding device for a stainless steel conical sealing nozzle is designed. The rotation of the motor is controlled by a control system, and the rotation power of the motor is transmitted to the grinding device by a joint flexible shaft, so as to achieve the goal of grinding and repairing the nozzle defects and meet the conical sealing performance of the nozzle.

[0039] like Figures 1 to 3 The figure shows the main structure of the grinding device, including a threaded positioning sleeve 1, a grinding head 2, a flat-end cylindrical compression spring 3, a double-row dustproof deep groove ball bearing 4, a retaining ring 5 and a set screw 6. A stepped through hole is provided on the threaded positioning sleeve 1, and the stepped through hole passes through the two axial end faces of the threaded positioning sleeve 1. A section of internal thread for matching the external thread of the nozzle is provided on the inner wall of the stepped through hole, and a set screw hole is provided on the side of the threaded positioning sleeve 1; the grinding head 2 is inserted into the stepped through hole of the threaded positioning sleeve 1, and the grinding head 2 includes a rotating shaft, one end of the rotating shaft is a conical grinding part, and the other end is a hexagonal joint. A retaining ring 5 is provided on the rotating shaft and near the hexagonal joint. The outer surface of the conical grinding part includes an outer conical surface, and the outer conical surface is provided with 3 spiral notches; the conical grinding part of the grinding head 2 also has a through hole, as shown in FIG. Figure 3The through hole is located at the large outer diameter end of the conical grinding part and intersects with the rotating shaft vertically, which plays the role of left and right exhaust and balancing the pressure difference on both sides, and also has a certain heat dissipation function; the double-row dustproof deep groove ball bearing 4 is assembled in the stepped through hole of the threaded positioning sleeve 1, and the outer ring of the double-row dustproof deep groove ball bearing 4 cooperates with the inner wall of the stepped through hole, and the inner ring of the double-row dustproof deep groove ball bearing 4 is sleeved on the rotating shaft of the grinding head 2; the flat-end cylindrical compression spring 3 is sleeved on the rotating shaft of the grinding head 2, and one end of the flat-end cylindrical compression spring 3 is pressed against the end face of the conical grinding part of the grinding head 2, and the other end is pressed against the end face of the bearing; the set screw 6 is inserted into the set screw hole of the threaded positioning sleeve 1, and the end of the set screw 6 is pressed against the outer ring surface of the double-row dustproof deep groove ball bearing 4.

[0040] like Figure 2 As shown, a heat dissipation hole is also opened on the surface of the threaded positioning sleeve 1, and the heat dissipation hole penetrates the side wall of the threaded positioning sleeve 1 and is connected with the stepped through hole.

[0041] like Figure 4 As shown, the stainless steel conical sealing nozzle rapid grinding device also includes a power system, which is mainly composed of a flexible shaft 7 and a servo motor 8. The first end of the flexible shaft 7 is detachably connected to the hexagonal joint at one end of the rotating shaft on the grinding head 2 and is fastened with a retaining ring 5. The output end of the servo motor 8 is connected to the second end of the flexible shaft 7.

[0042] like Figure 5 As shown, the stainless steel cone sealing nozzle rapid grinding device also includes a control system. The control system adopts a controller 9. The controller 9 is mainly composed of a touch screen, a power supply, a frequency converter, a contactor, a PLC, etc., and is used to control the start and stop, rotation direction, speed, time setting and other functions of the servo motor by inputting relevant parameters.

[0043] like Figure 6 As shown, it is a schematic diagram of using a stainless steel conical sealing nozzle rapid grinding device to grind the inner conical surface of a nozzle. Before use, select a suitable grinding head 2 and a threaded positioning sleeve 1 according to the specific conditions of the inner conical surface of the nozzle (the taper and outer diameter of the inner conical surface and the external thread size of the nozzle, etc.), then connect the grinding head 2 to the flexible shaft 7, and then connect the other end of the flexible shaft 7 to the servo motor 8. Next, adjust the parameters on the controller 9, and finally screw the threaded positioning sleeve 1 into the nozzle to start grinding.

[0044] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. Rapid grinding device for stainless steel cone sealing nozzle, characterized in that: include: A threaded positioning sleeve (1), wherein the threaded positioning sleeve (1) is provided with a stepped through hole, the stepped through hole passes through two axial end faces of the threaded positioning sleeve (1), an inner wall of the stepped through hole is provided with an internal thread for matching the external thread of the nozzle, and a set screw hole is provided on the side surface of the threaded positioning sleeve (1); A grinding head (2), the grinding head (2) being inserted into the stepped through hole of the threaded positioning sleeve (1), the grinding head (2) comprising a rotating shaft, one end of the rotating shaft being a conical grinding portion, the other end being a joint, the outer surface of the conical grinding portion comprising an outer conical surface, and a notch being formed on the outer conical surface; A bearing, wherein the bearing is assembled in the stepped through hole of the threaded positioning sleeve (1), and the outer ring of the bearing is matched with the inner wall of the stepped through hole, and the inner ring of the bearing is sleeved on the rotating shaft of the grinding head (2); A spring, wherein the spring is sleeved on the rotating shaft of the grinding head (2), and one end of the spring is pressed against the end surface of the conical grinding portion of the grinding head (2), and the other end is pressed against the end surface of the bearing; A set screw (6) is inserted into the set screw hole of the threaded positioning sleeve (1), and the end of the set screw (6) is pressed against the outer ring surface of the bearing.

2. The stainless steel cone sealing nozzle rapid grinding device according to claim 1, characterized in that: Also includes: A flexible shaft (7), wherein a first end of the flexible shaft (7) is detachably connected to a joint at one end of a rotating shaft on the grinding head (2); A servo motor (8), wherein the output end of the servo motor (8) is connected to the second end of the flexible shaft (7).

3. The stainless steel cone sealing nozzle rapid grinding device according to claim 2, characterized in that: The invention also comprises a controller (9), wherein the controller (9) is mainly composed of a touch screen, a power supply, a frequency converter, a contactor and a PLC, and the controller (9) is electrically connected to the servo motor (8).

4. The stainless steel cone sealing nozzle rapid grinding device according to claim 1, characterized in that: The surface of the threaded positioning sleeve (1) is also provided with heat dissipation holes, which penetrate through the side wall of the threaded positioning sleeve (1) and are connected with the stepped through hole.

5. The stainless steel cone sealing nozzle rapid grinding device according to claim 1, characterized in that: A spiral notch is formed on the outer conical surface of the conical surface grinding portion, and the notch extends from the large outer diameter end to the small outer diameter end of the outer conical surface.

6. The stainless steel cone sealing nozzle rapid grinding device according to claim 1, characterized in that: The bearing is a double-row dustproof deep groove ball bearing (4).

7. The stainless steel cone sealing nozzle rapid grinding device according to claim 1, characterized in that: The spring is a flat-end cylindrical compression spring (3).

8. The stainless steel cone sealing nozzle rapid grinding device according to claim 1, characterized in that: The conical surface grinding portion of the grinding head (2) has at least one through hole, and the through hole intersects perpendicularly with the rotation axis of the grinding head (2).

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