Lubricating oil mist supply device of pipe bending machine

Abstract

The utility model relates to the technical field of pipe benders, in particular to a lubricating oil mist supply device of a pipe bender, which comprises a sleeve with an inner cavity and an opening at one end, and an air outlet and an air inlet which are communicated with the inner cavity are arranged on the side wall of the sleeve; the spray pipe is communicated with the air outlet hole; the connecting piece is in threaded connection with the opening and forms a connector towards the inner cavity; and the oil supply assembly is communicated with the connector. The surface of the oil delivery needle is fixedly sleeved with the limiting piece, it is ensured that after the oil delivery needle is screwed into the connector in a threaded mode, the limiting piece can abut against the connector, and after the oil delivery needle penetrates through the inner cavity and the air outlet hole and stretches into the spray pipe through the connecting piece, the limiting piece can be attached to the blocking piece fixed in the inner cavity, and therefore the oil delivery needle can be prevented from being blocked. Therefore, the limiting piece is clamped between the blocking piece and the connector, axial positioning of the oil conveying needle is achieved, and axial movement of the oil conveying needle caused by loosening of threaded connection is prevented.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending machine technology, and in particular to a lubricating oil mist supply device for a pipe bending machine. Background Technology

[0002] When a pipe bending machine processes metal pipes, there is a lot of friction between the mold and the pipe, which can cause wear on both the mold and the pipe, affecting product quality and potentially damaging the machine. Therefore, an oil mist supply device is needed for lubrication.

[0003] A search revealed a Chinese utility model patent with authorization announcement number CN215902587U, which discloses a lubricating oil mist supply device and a pipe bending machine. In this design, the oil pipe and the long needle are connected by threads instead of an interference fit, avoiding the problem of the oil pipe clogging the end face of the core tube due to loose connection between the long needle and the oil pipe. At the same time, the oil pipe and the air pipe are designed with different axes, and the gas and oil are input into the core tube from different inlets, avoiding the problem of the oil pipe clogging the end face of the core tube and insufficient air input caused by the concentric setting of the air pipe and the oil pipe.

[0004] In the above technical solution, a threaded connection is used between the oil pipe and the long needle (oil delivery needle) instead of an interference fit. Although this can reduce the loosening of the connection between the long needle and the oil pipe, the lack of axial locking between the long needle and the oil pipe means that the threaded connection between the long needle and the oil pipe may still loosen with the frequent use of the lubricating oil mist supply device. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a lubricating oil mist supply device for a pipe bending machine, so as to solve the technical problem that the connection between the oil supply needle and the oil pipe of the existing lubricating oil mist supply device for pipe bending machines is easy to loosen.

[0006] To achieve the above objectives, this utility model provides a lubricating oil mist supply device for a pipe bending machine, comprising:

[0007] A sleeve having an inner cavity and an open end, wherein the side wall of the sleeve has an air outlet and an air inlet communicating with the inner cavity;

[0008] A nozzle connected to the air outlet;

[0009] A connector that is threaded to the open end and forms a connector head facing the inner cavity;

[0010] The oil supply assembly connected to the connector;

[0011] An air supply assembly connected to the air inlet;

[0012] The oil delivery needle has one end threadedly connected to the connector, and the other end passes through the inner cavity and the air outlet in sequence and extends into the nozzle.

[0013] A limiting member fitted over the oil delivery needle;

[0014] A blocking component is disposed within the inner cavity and located between the air outlet and the connector. The blocking component has a through hole that fits with the gap of the oil delivery needle. The limiting component is clamped between the blocking component and the connector to achieve axial positioning.

[0015] As a preferred embodiment of this utility model, the outer surface of the nozzle is provided with a first external thread, which engages with a first threaded groove formed at one end of the sleeve, and the first threaded groove is connected to the air outlet.

[0016] As a preferred embodiment of this utility model, a second external thread is provided on a portion of the circumferential surface of the connector, and the second external thread engages with a second threaded groove provided on the inner wall of the opening.

[0017] As a preferred embodiment of this utility model, the oil delivery needle is provided with a third external thread on the outer circumferential surface at one end, and the third external thread cooperates with the third thread groove opened in the connector.

[0018] As a preferred embodiment of this utility model, the limiting member is an annular member, and the blocking member has a first groove that matches the shape of the limiting member.

[0019] As a preferred technical solution of this utility model, the blocking member is an annular plate that is adapted to the cross-sectional shape of the inner cavity, and a second groove is provided at the edge of the blocking member, and a first sealing ring is sleeved in the second groove.

[0020] As a preferred embodiment of this utility model, a baffle is fixedly provided on the inner wall of the inner cavity, and the baffle is used to cooperate with the connector to clamp the blocking component.

[0021] As a preferred embodiment of this utility model, the air supply component includes a first connector connected to an air inlet, the first connector being provided with a regulating valve and an air pipe, the air pipe being connected to an air storage tank.

[0022] As a preferred embodiment of this utility model, the oil supply assembly includes a second connector with one end connected to a connector, and an oil pipe connected to the other end of the second connector, the oil pipe being connected to an oil storage tank.

[0023] The beneficial effects of this utility model are as follows: By installing a fixed limiting member on the surface of the oil delivery needle, this utility model ensures that when the oil delivery needle is screwed into the connector, the limiting member can abut against the connector. When the oil delivery needle is passed through the inner cavity and the air outlet and inserted into the nozzle using the connector, the limiting member can fit against the blocking member fixed in the inner cavity, thereby clamping the limiting member between the blocking member and the connector to achieve axial positioning of the oil delivery needle and prevent axial movement of the oil delivery needle due to loose threaded connection. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the external three-dimensional structure of the present invention;

[0026] Figure 2 This is a schematic diagram of a half-section of the present invention;

[0027] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the semi-sectional three-dimensional structure of this utility model;

[0029] Figure 5 This is a partial three-dimensional structural diagram of the blocking component of this utility model.

[0030] The markings in the diagram are as follows: 1. Sleeve; 2. Inner cavity; 3. Air outlet; 4. First threaded groove; 5. Nozzle; 6. First external thread; 7. Air inlet; 8. First connector; 9. Regulating valve; 10. Air pipe; 11. Connector; 12. Second external thread; 13. Connector head; 14. Third threaded groove; 15. Oil injection needle; 16. Third external thread; 17. Blocking component; 18. First groove; 19. Limiting component; 20. Baffle; 21. Second groove; 22. First sealing ring; 23. Second connector; 24. Oil pipe. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] like Figure 1 and Figure 2 As shown, a lubricating oil mist supply device for a pipe bending machine includes: a sleeve 1 with an inner cavity 2 and an open end, the side wall of the sleeve 1 having an air outlet 3 and an air inlet 7 communicating with the inner cavity 2; a spray pipe 5 communicating with the air outlet 3; a connector 11 threadedly connected to the open end and forming a connector 13 facing the inner cavity 2; an oil supply assembly communicating with the connector 13; an air supply assembly communicating with the air inlet 7; an oil supply needle 15, one end of which is threadedly connected to the connector 13, and the other end passing through the inner cavity 2, the air outlet 3 and extending into the spray pipe 5; a limiting member 19 sleeved outside the oil supply needle 15; and a blocking member 17, which is disposed in the inner cavity 2 and located between the air outlet 3 and the connector 13, the blocking member 17 having a through hole that fits with the oil supply needle 15 with a clearance, and the limiting member 19 being clamped between the blocking member 17 and the connector 13 to achieve axial positioning.

[0034] The above technical solution effectively solves the problem of loosening of the oil delivery needle 15. In use, one end of the oil delivery needle 15 is screwed into the connector 13 until the limiting member 19 sleeved on the outside of the oil delivery needle 15 abuts against one end of the connector 13. Then, the connector 11, which connects the connector 13 and the oil delivery needle 15, is screwed into the opening of the sleeve 1, thereby sealing the inner cavity 2. As the connector 11 continues to penetrate deeper into the inner cavity 2, it will cause one end of the oil delivery needle 15 to pass through the inner cavity 2 and the vent 3 in sequence. The nozzle 15 is inserted into the nozzle 5 until the limiting part 19 on the surface of the oil needle 15 abuts against the blocking part 17, thus completing the installation. When spraying oil mist, the oil supply component sprays lubricating oil into the nozzle 5 through the connector 11, connector 13 and oil needle 15. At the same time, the air supply component sprays compressed gas into the inner cavity 2 through the air inlet 7. The compressed gas entering the inner cavity 2 enters the space between the nozzle 5 and the oil needle 15 through the air outlet 3, thereby causing the gas in the nozzle 5 to push the oil out of the nozzle 5 and provide lubricating oil mist for the pipe bending machine.

[0035] In summary, this utility model, by fitting a fixing limiting member 19 onto the surface of the existing oil delivery needle 15, ensures that after the oil delivery needle 15 is screwed into the connector 13, the limiting member 19 can abut against the connector 13, indicating that the oil delivery needle 15 has been screwed into the required position. When the connector 11 is used to pass the oil delivery needle 15 through the inner cavity 2 and the air outlet 3 and extend it into the nozzle 5, the limiting member 19 can fit against the blocking member 17 fixed in the inner cavity 2, thereby clamping the limiting member 19 between the blocking member 17 and the connector 13, so as to achieve axial positioning of the oil delivery needle 15 and prevent the oil delivery needle 15 from moving axially due to loose threaded connection.

[0036] like Figure 2 and Figure 4 As shown, in this embodiment, the outer surface of the nozzle 5 is provided with a first external thread 6, which engages with a first threaded groove 4 opened at one end of the sleeve 1, and the first threaded groove 4 is connected to the air outlet 3.

[0037] The above technical solution allows the nozzle 5 to be installed at one end of the sleeve 1 via a threaded connection, facilitating disassembly and installation.

[0038] like Figure 2 and Figure 4 As shown, in this embodiment, a second external thread 12 is provided on a portion of the circumferential surface of the connector 11, and the second external thread 12 mates with a second threaded groove provided on the inner wall of the opening.

[0039] The above technical solution allows the connector 11 to be installed at the opening of the sleeve 1 via a threaded connection, thereby sealing the inner cavity 2.

[0040] like Figure 2 and Figure 3 As shown, in this embodiment, the oil injection needle 15 has a third external thread 16 on the outer circumferential surface at one end, and the third external thread 16 cooperates with the third thread groove 14 opened in the connector 13.

[0041] The above technical solution enables the oil injection needle 15 to be connected to the connector 13 by means of threads.

[0042] like Figure 3 and Figure 5 As shown, in this embodiment, the limiting member 19 is an annular member, and the blocking member 17 has a first groove 18 that matches the shape of the limiting member 19.

[0043] The above technical solution enables the blocking member 17 and the limiting member 19 to be stably connected, thereby better positioning the oil delivery needle 15 axially and preventing axial movement due to loose threaded connection of the oil delivery needle 15.

[0044] like Figure 4 and Figure 5As shown, in this embodiment, the blocking member 17 is an annular plate that is adapted to the cross-sectional shape of the inner cavity 2. A second groove 21 is provided at the edge of the blocking member 17, and a first sealing ring 22 is fitted in the second groove 21.

[0045] The above technical solution can divide the interior of the inner cavity 2 into two parts. Only the left part of the inner cavity 2 is for compressed gas to pass through, preventing the gas from blowing oil and water into the gap between the connector 11 and the opening of the sleeve 1. At the same time, the conical structure of the blocking member 17 is conducive to forming a guide surface and guiding the compressed gas into the nozzle 5.

[0046] like Figure 3 and Figure 4 As shown, in this embodiment, a baffle 20 is fixedly provided on the inner wall of the inner cavity 2. The baffle 20 is used to cooperate with the connector 13 to clamp the blocking member 17.

[0047] The above technical solution allows the blocking component 17 to be detachably installed in the inner cavity 2, facilitating the periodic disassembly of the connecting component 11 to open the inner cavity 2, remove the blocking component 17 from the inner cavity 2, and clean and maintain the inside of the inner cavity 2.

[0048] like Figure 1 As shown, in this embodiment, the gas supply assembly includes a first connector 8 connected to the air inlet 7. The first connector 8 is provided with a regulating valve 9 and an air pipe 10, and the air pipe 10 is connected to the gas storage tank.

[0049] The above technical solution can provide compressed gas to the inner cavity 2. The regulating valve 9 is a gas flow regulating valve, which can control the gas flow rate entering the nozzle 5. This part is the technical content recorded in the prior art CN215902587U, and will not be repeated here.

[0050] like Figure 1 As shown, in this embodiment, the oil supply assembly includes a second connector 23 with one end connected to the connector 11, and the other end of the second connector 23 is connected to an oil pipe 24, which is connected to an oil storage tank.

[0051] The above technical solution enables lubricating oil to be introduced into the oil injection needle 15. This part is the technical content recorded in the prior art CN215902587U, and will not be repeated here.

[0052] Working principle: In use, one end of the oil delivery needle 15 is screwed into the connector 13 until the limiting member 19 on the outside of the oil delivery needle 15 abuts against one end of the connector 13. Then, the connector 11, which connects the connector 13 and the oil delivery needle 15, is screwed into the opening of the sleeve 1, thereby sealing the inner cavity 2. As the connector 11 continues to penetrate into the inner cavity 2, it will drive one end of the oil delivery needle 15 to pass through the inner cavity 2, the vent 3 and extend into the nozzle 5 in sequence, until the limiting member 19 on the surface of the oil delivery needle 15 abuts against the blocking member 17, thus completing the installation. A fixed limiting member 19 is provided on the surface to ensure that when the oil injection needle 15 is screwed into the connector 13, the limiting member 19 can abut against the connector 13 to indicate that the oil injection needle 15 has been screwed into the required position. When the connector 11 is used to pass the oil injection needle 15 through the inner cavity 2 and the air outlet 3 and extend it into the nozzle 5, the limiting member 19 can fit against the blocking member 17 fixed in the inner cavity 2, so that the limiting member 19 is clamped between the blocking member 17 and the connector 13 to achieve axial positioning of the oil injection needle 15 and prevent the oil injection needle 15 from moving axially due to loose thread connection.

[0053] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0054] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lubricating oil mist supply device for a pipe bending machine, comprising: A sleeve (1) with an inner cavity (2) and an open end is provided. The side wall of the sleeve (1) is provided with an air outlet (3) and an air inlet (7) that communicate with the inner cavity (2). The nozzle (5) is connected to the air outlet (3); A connector (11) that is threadedly connected to the open end and forms a connector (13) facing the inner cavity (2); The oil supply assembly connected to the connector (13); An air supply assembly connected to the air inlet (7); The oil injection needle (15) has one end threadedly connected to the connector (13), and the other end passes through the inner cavity (2), the air outlet (3) and extends into the nozzle (5); Its characteristic is that it further includes: A limiting member (19) sleeved outside the oil delivery needle (15); A blocking member (17) is provided in the inner cavity (2) and located between the air outlet (3) and the connector (13). The blocking member (17) has a through hole that fits with the oil needle (15) with a clearance. The limiting member (19) is clamped between the blocking member (17) and the connector (13) to achieve axial positioning.

2. The lubricating oil mist supply device for the pipe bending machine according to claim 1, characterized in that, The outer surface of the nozzle (5) is provided with a first external thread (6), which engages with a first thread groove (4) opened at one end of the sleeve (1), and the first thread groove (4) is connected to the air outlet (3).

3. The lubricating oil mist supply device for the pipe bending machine according to claim 1, characterized in that, The connector (11) has a second external thread (12) on a portion of its circumferential surface, and the second external thread (12) engages with a second thread groove located on the inner wall of the opening.

4. The lubricating oil mist supply device for the pipe bending machine according to claim 1, characterized in that, The oil delivery needle (15) has a third external thread (16) on the outer circumferential surface at one end, and the third external thread (16) engages with the third thread groove (14) opened in the connector (13).

5. The lubricating oil mist supply device for the pipe bending machine according to claim 1, characterized in that, The limiting member (19) is an annular member, and the blocking member (17) has a first groove (18) that matches the shape of the limiting member (19).

6. The lubricating oil mist supply device for the pipe bending machine according to claim 5, characterized in that, The blocking member (17) is an annular plate that is adapted to the cross-sectional shape of the inner cavity (2). A second groove (21) is provided at the edge of the blocking member (17), and a first sealing ring (22) is fitted in the second groove (21).

7. The lubricating oil mist supply device for the pipe bending machine according to claim 1, characterized in that, The inner wall of the inner cavity (2) is fixedly provided with a baffle (20), which is used to cooperate with the connector (13) to clamp the blocking member (17).

8. The lubricating oil mist supply device for the pipe bending machine according to claim 1, characterized in that, The gas supply assembly includes a first connector (8) connected to the air inlet (7), the first connector (8) being provided with a regulating valve (9) and an air pipe (10), the air pipe (10) being connected to the gas storage tank.

9. The lubricating oil mist supply device for the pipe bending machine according to claim 1, characterized in that, The oil supply assembly includes a second connector (23) with one end connected to the connector (11), and the other end of the second connector (23) is connected to an oil pipe (24), which is connected to an oil storage tank.

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