Oil leakage prevention oil pump head of manual hydraulic pipe bending machine

Abstract

The utility model discloses an oil leakage prevention oil pump head of a manual hydraulic pipe bending machine, and relates to the field of pipe bending machines. The oil pump head comprises an oil pump head body and a piston column, a mold clamping end is arranged at the top of the piston column, a threaded hole is formed in the middle axis of the mold clamping end, a sealing mechanism is arranged in the threaded hole, and the sealing mechanism comprises a first threaded block and a second threaded block. In the connecting process, the bottom face of the second threaded block abuts against the sealing piece, due to the fact that the abutting face is an inclined face, the sealing piece made of rubber deforms, gaps between the threaded blocks are filled, good sealing performance is provided, meanwhile, threaded sealing of the threaded blocks is matched, the sealing performance of connection between the second threaded block and a threaded hole is further enhanced, oil leakage is effectively prevented, and the service life of the second threaded block is prolonged. Compared with traditional raw adhesive tape sealing, the mode has the advantages that the winding process is omitted, the sealing performance is improved, the installation steps are simplified, and the convenience is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of pipe bending machines, in particular to an oil pump head for a manual hydraulic pipe bending machine which is anti-oil-leakage. Background Art

[0002] Manual pipe bending machine is a simple and practical pipe bending equipment. It can achieve high-precision pipe bending through manual operation without complicated heating and sand filling processes. It is easy to carry and easy to operate. It can meet the needs of small-scale pipe processing and maintenance. It is widely used in construction, automobiles, aerospace and other fields. However, the processing efficiency of manual pipe bending machine is relatively low, and the labor intensity is high. It is not suitable for large-scale batch production and requires operators to have certain physical strength and skills.

[0003] During the use of the pipe bending machine, oil pump head oil leakage is a common problem. There are two main reasons, which can be seen in Figure 1 First, the sealing ring 3 on the surface of the piston column 2 may cause oil leakage due to aging or damage. Secondly, if the sealing bolt at the top of the piston column 2 is not threaded tightly, it will also cause oil leakage. For the situation where the sealing bolt is not tightly connected, a common solution is to use raw tape to improve the sealing of the structure. However, while using raw tape improves the sealing, it also reduces the convenience of installation and connection of the sealing bolt. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide an oil leakage-proof manual hydraulic pipe bending oil pump head to solve the technical problem of reducing the convenience of installation and connection when the traditional use of raw tape to solve the problem of loose sealing structure of sealing bolts.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil leakage-proof manual hydraulic pipe bending oil pump head, comprising an oil pump head body and a piston column, a mold clamping end is arranged on the top of the piston column, a threaded hole is opened at the center axis of the mold clamping end, a sealing mechanism is arranged inside the threaded hole, the sealing mechanism comprises a first threaded block and a second threaded block, a protrusion is arranged at the top center axis of the first threaded block, a first hexagonal hole is opened on the surface of the protrusion, a through hole is opened below the center axis of the second threaded block, and a sealing sheet is arranged between the first threaded block and the second threaded block.

[0006] By adopting the above technical scheme, the first threaded block is connected to the threaded hole by threaded connection, so as to build a solid foundation for the sealing mechanism. Subsequently, the sealing sheet is sleeved on the outer side of the protrusion to prepare for the subsequent sealing operation. Then, the second threaded block is threadedly connected to the threaded hole. During this process, the protrusion is gradually inserted into the interior of the through hole, and at the same time, the bottom surface of the second threaded block is tightly abutted against the sealing sheet on the top surface of the first threaded block. Since the abutting surfaces of the second threaded block and the first threaded block are designed as an inclined structure, during the pressing process, the rubber sealing sheet is deformed, which effectively fills the gap between the two threaded blocks, which not only provides excellent sealing, but also cooperates with the threaded sealing of the first threaded block and the second threaded block, thereby further enhancing the connection sealing with the threaded hole and significantly reducing the risk of oil leakage.

[0007] Furthermore, the sealing sheet is in a circular ring shape and is made of rubber.

[0008] By adopting the above technical solution, the annular structure of the sealing sheet enables it to perfectly adapt to the contact surface between the first threaded block and the second threaded block, ensuring that the sealing sheet can evenly cover and fill the gap between the two threaded blocks, providing comprehensive sealing coverage and effectively preventing oil leakage from these gaps.

[0009] Furthermore, the top surface of the first threaded block abuts against the bottom surface of the second threaded block, and the abutting surface is an inclined structure.

[0010] By adopting the above technical solution, the contact area is increased, making the connection between the two threaded blocks tighter, and the inclined surface structure enables the two threaded blocks to gradually fit together during the tightening process to form a more stable connection.

[0011] Furthermore, the protrusion is a cylindrical structure, and the protrusion is adapted to the through hole.

[0012] By adopting the above technical solution, it can be stably and accurately inserted into the through hole, ensuring the precise positioning between the first threaded block and the second threaded block, which not only enhances the stability of the entire sealing mechanism, but also effectively prevents possible misalignment or loosening during use.

[0013] Furthermore, the first threaded block and the second threaded block are both threadedly connected to the threaded hole.

[0014] By adopting the above technical solution, a tight fit between the threaded block and the threaded hole is ensured, and the threaded connection has self-locking properties, which can effectively prevent the threaded block from loosening due to vibration or pressure changes during use, thereby ensuring the stability and reliability of the sealing mechanism. At the same time, the threaded connection also makes the installation and disassembly of the threaded block convenient and quick, and facilitates maintenance and replacement.

[0015] Furthermore, a second hexagonal hole is provided above the central axis of the second threaded block, and the first hexagonal hole and the second hexagonal hole are used to provide force points for the user to apply a hexagonal wrench to the first threaded block and the second threaded block.

[0016] By adopting the above technical solution, a convenient operation point is provided for the user. Through these hexagonal holes, the user can easily rotate the threaded block with a hexagonal wrench.

[0017] Furthermore, a sealing ring is provided below the outer side of the piston column.

[0018] By adopting the above technical solution, the sealing ring ensures the sealing performance of the oil pump. The sealing ring can effectively prevent oil leakage, ensure that the oil pump can maintain a stable pressure during operation, and avoid performance degradation or equipment damage caused by oil leakage.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] The utility model constructs the basis of the sealing mechanism through a sealing mechanism, by threading the first threaded block and the threaded hole. Subsequently, the sealing sheet is sleeved on the outside of the convex block to prepare for sealing. Next, the second threaded block is connected to the threaded hole. During the connection process, the convex block is gradually inserted into the through hole, and the bottom surface of the second threaded block abuts the sealing sheet. Since the abutting surface is an inclined surface, the sealing sheet can be extended and deformed obliquely, and fills the gap between the threaded blocks, providing good sealing. At the same time, the threaded sealing of the threaded block further enhances the connection sealing with the threaded hole, effectively preventing oil leakage. Compared with the traditional raw tape sealing, this method eliminates the winding process, which not only improves the sealing, but also simplifies the installation steps, and significantly improves the convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the sealing mechanism of the utility model;

[0023] Figure 3 It is a cross-sectional structural diagram of the sealing mechanism of the utility model;

[0024] Figure 4 For this utility model Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0025] In the figure: 1. Oil pump head body; 2. Piston rod; 3. Sealing ring; 4. Mold clamping end; 5. Threaded hole; 6. Sealing mechanism; 601. First threaded block; 602. Second threaded block; 603. Protrusion; 604. First hexagonal inner hole; 605. Through hole; 606. Second hexagonal inner hole; 607. Sealing sheet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0029] The following describes an embodiment of the utility model based on its overall structure.

[0030] Embodiment 1:

[0031] A leak-proof manual hydraulic pipe bending oil pump head, such as Figure 1-Figure 4As shown, it includes an oil pump head body 1 and a piston column 2, a mold clamping end 4 is provided on the top of the piston column 2, a threaded hole 5 is provided at the center axis of the mold clamping end 4, a sealing mechanism 6 is provided inside the threaded hole 5, and the sealing mechanism 6 includes a first threaded block 601 and a second threaded block 602, a protrusion 603 is provided at the top center axis of the first threaded block 601, a first hexagonal hole 604 is provided on the surface of the protrusion 603, a through hole 605 is provided below the center axis of the second threaded block 602, a sealing sheet 607 is provided between the first threaded block 601 and the second threaded block 602, the first threaded block 601 is connected to the threaded hole 5 by threaded connection, and a solid foundation for the sealing mechanism 6 is constructed, and then the sealing sheet 607 is sleeved on the outside of the protrusion 603 to prepare for the next sealing operation, and then the second threaded block 602 is threadedly connected to the threaded hole 5. , the protrusion 603 is gradually inserted into the interior of the through hole 605, and at the same time, the bottom surface of the second threaded block 602 is tightly abutted against the sealing sheet 607 on the top surface of the first threaded block 601. Since the abutting surfaces of the second threaded block 602 and the first threaded block 601 are designed as a slope structure, during the pressing process, the rubber sealing sheet 607 is deformed, effectively filling the gap between the two threaded blocks, not only providing excellent sealing, but also cooperating with the threaded sealing of the first threaded block 601 and the second threaded block 602, thereby further enhancing the connection sealing with the threaded hole 5, and significantly reducing the risk of oil leakage. Compared with the traditional method of using raw tape for sealing, the cumbersome process of winding raw tape is eliminated, which not only improves the sealing performance, but also greatly simplifies the installation steps, thereby significantly improving the convenience of operation. This setting achieves efficient and convenient sealing effects by optimizing the structure and material selection.

[0032] See also Figure 3 , Figure 4 The sealing sheet 607 is in a circular ring structure and is made of rubber. The circular ring structure of the sealing sheet 607 enables it to perfectly fit the contact surface between the first threaded block 601 and the second threaded block 602, ensuring that the sealing sheet 607 can evenly cover and fill the gap between the two threaded blocks, providing comprehensive sealing coverage, and effectively preventing oil from leaking from these gaps. At the same time, the sealing sheet 607 is made of rubber, which has good elasticity and deformation recovery ability. When the second threaded block 602 presses against the sealing sheet, the rubber material can undergo appropriate deformation and fit closely to the inclined abutting surfaces of the two threaded blocks, further enhancing the sealing effect. The durability and corrosion resistance of rubber also ensure the stability and reliability of the sealing sheet 607 in long-term use.

[0033] See also Figure 2 , Figure 3 , Figure 4The top surface of the first threaded block 601 abuts against the bottom surface of the second threaded block 602, and the abutting surface is an inclined structure, which increases the contact area and makes the connection between the two threaded blocks tighter. The inclined structure enables the two threaded blocks to gradually fit together during the tightening process to form a more stable connection. At the same time, the inclined abutting surface also helps to deform the sealing sheet 607 during the pressing process to fill the gap, thereby providing excellent sealing performance and effectively preventing oil leakage from the connection, ensuring the normal operation of the oil pump head. The setting of the inclined abutting surface not only enhances the stability of the connection, but also improves the sealing effect.

[0034] See also Figure 2 , Figure 3 , Figure 4 The protrusion 603 has a cylindrical structure. The protrusion 603 is compatible with the through hole 605 and can be stably and accurately inserted into the through hole 605, ensuring the precise positioning between the first threaded block 601 and the second threaded block 602, which not only enhances the stability of the entire sealing mechanism, but also effectively prevents the misalignment or loosening that may occur during use. At the same time, due to the compatibility of the protrusion 603 and the through hole 605, when the second threaded block 602 is tightened, the protrusion can be tightly embedded in the through hole, further strengthening the tightness of the connection between the two threaded blocks. This tight connection helps to improve the sealing performance of the entire sealing mechanism, prevent oil leakage, and ensure the normal operation of the oil pump head.

[0035] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The first threaded block 601 and the second threaded block 602 are both threadedly connected to the threaded hole 5, ensuring a tight fit between the threaded block and the threaded hole 5. The threaded connection is self-locking and can effectively prevent the threaded block from loosening due to vibration or pressure changes during use, thereby ensuring the stability and reliability of the sealing mechanism. At the same time, the threaded connection also makes the installation and disassembly of the threaded block convenient and quick, and is easy to maintain and replace. In addition, the threaded connection can evenly distribute pressure, avoid stress concentration, and increase the service life of the entire oil pump head. The threaded connection provides a stable and reliable connection method for the oil pump head, ensuring its normal operation and extending its service life.

[0036] Embodiment 2:

[0037] See also Figure 2 , Figure 3 , Figure 4A second hexagonal hole 606 is provided above the central axis of the second threaded block 602. The first hexagonal hole 604 and the second hexagonal hole 606 are used to provide the user with force points for using a hexagonal wrench to apply force to the first threaded block 601 and the second threaded block 602, providing the user with convenient operation points. Through these hexagonal holes, the user can easily rotate the threaded block with a hexagonal wrench. At the same time, the design of the hexagonal holes makes the force more concentrated and precise, reduces the possible sliding or misalignment during operation, thereby improving the efficiency and accuracy of the operation, which not only facilitates the user to install and disassemble the threaded block, but also provides convenience for maintenance and debugging, further improving the practicality and ease of use of the oil pump head.

[0038] See also Figure 1 A sealing ring 3 is arranged at the lower outer side of the piston rod 2. The sealing ring 3 ensures the sealing performance of the oil pump. The sealing ring 3 can effectively prevent oil leakage, ensure that the oil pump can maintain a stable pressure during operation, and avoid performance degradation or equipment damage caused by oil leakage. At the same time, the sealing ring 3 can also reduce the entry of external impurities into the oil pump, protect the oil pump from pollution, thereby extending the service life of the oil pump. The setting of the sealing ring 3 also improves the overall working efficiency of the oil pump, because good sealing performance means less energy loss, so that the oil pump can convert energy more efficiently during operation.

[0039] The implementation principle of the utility model is: the first thread block 601 is threadedly connected to the threaded hole 5, and then the sealing sheet 607 is sleeved on the outer side of the protrusion 603, and then the second thread block 602 is threadedly connected to the threaded hole 5. During the gradual thread connection process, the protrusion 603 is gradually inserted into the interior of the through hole 605, and the bottom surface of the second thread block 602 abuts against the sealing sheet 607 on the top surface of the first thread block 601. Because the abutting surfaces of the second thread block 602 and the first thread block 601 are inclined structures, when the sealing sheet 607 is pressed, the sealing sheet 607 made of rubber material is deformed to fill the gap between the second thread block 602 and the first thread block 601, providing sufficient sealing while cooperating with the thread sealing of the first thread block 601 and the second thread block 602, which is conducive to further improving the connection sealing with the threaded hole 5 and avoiding oil leakage. Compared with the traditional raw tape sealing form, it is conducive to eliminating the process of winding raw tape, improving the sealing and further improving the convenience of its installation process.

[0040] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0041] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. An anti-leakage manual hydraulic pipe bending oil pump head, characterized in that: The invention comprises an oil pump head body (1) and a piston column (2), wherein a mold clamping end (4) is arranged at the top of the piston column (2), a threaded hole (5) is provided at the center axis of the mold clamping end (4), a sealing mechanism (6) is provided inside the threaded hole (5), and the sealing mechanism (6) comprises a first threaded block (601) and a second threaded block (602), a convex block (603) is arranged at the center axis of the top of the first threaded block (601), a first hexagonal hole (604) is provided on the surface of the convex block (603), a through hole (605) is provided below the center axis of the second threaded block (602), and a sealing sheet (607) is provided between the first threaded block (601) and the second threaded block (602).

2. The anti-leakage manual hydraulic pipe bending oil pump head according to claim 1 is characterized by: The sealing sheet (607) is in a circular ring structure and is made of rubber.

3. The anti-leakage manual hydraulic pipe bending oil pump head according to claim 1 is characterized by: The top surface of the first threaded block (601) abuts against the bottom surface of the second threaded block (602), and the abutting surface is an inclined structure.

4. The anti-leakage manual hydraulic pipe bending oil pump head according to claim 1 is characterized by: The convex block (603) is in a cylindrical structure, and the convex block (603) is adapted to the through hole (605).

5. The anti-leakage manual hydraulic pipe bending oil pump head according to claim 1 is characterized by: The first threaded block (601) and the second threaded block (602) are both threadedly connected to the threaded hole (5).

6. The anti-leakage manual hydraulic pipe bending oil pump head according to claim 1, characterized in that: A second hexagonal hole (606) is provided above the central axis of the second threaded block (602), and the first hexagonal hole (604) and the second hexagonal hole (606) are used to provide force points for the user to use a hexagonal wrench to apply force to the first threaded block (601) and the second threaded block (602).

7. The anti-leakage manual hydraulic pipe bending oil pump head according to claim 1, characterized in that: A sealing ring (3) is arranged below the outer side of the piston column (2).

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