Die for processing hexagon nut pipe joint blank

Abstract

The utility model relates to a die for processing a hexagon nut pipe joint blank, which belongs to the field of automobile accessories and is characterized in that a hexagonal cavity, a cylindrical cavity and a shunting cavity are arranged in a lower die, a sliding die is arranged in the right side of the lower die, a screw hole is arranged in the sliding die, a positioning rod is mounted on the lower die, and a screw hole is arranged in the screw hole. An upper die is installed on the positioning rod, a connecting ring is installed on the upper die, and a punching needle is installed at the bottom of the upper die; after a red iron column is placed in the extrusion cavity, the upper die drives the punching needle to move downwards to extrude the iron column into a hexagon nut shape.

Description

Technical Field

[0001] This utility model relates to a mold for processing hexagonal nut pipe joint blanks, belonging to the field of auto parts, and specifically to a mold for extruding hexagonal nut blanks. Background Technology

[0002] Hexagonal nut pipe fittings, with a hexagonal nut at one end and a round tube at the other, are typically used in the brake lines of heavy-duty trucks. Currently, there are two methods for producing hexagonal nut pipe fitting blanks: one is by forging round steel, and the other is by casting molten iron. Forged round steel blanks have the advantages of fast processing speed and low cost, but the disadvantages are a high scrap rate during forging, the need for drilling a center hole during subsequent lathe machining, and a large machining workload. Molten iron casting blanks have the advantages of fast casting speed, the ability to cast multiple boxes simultaneously, and low casting cost, but the disadvantages are the need for drilling a center hole and machining the outer diameter during subsequent lathe machining, resulting in a large machining workload. Therefore, there is a need for a pipe fitting extrusion die with a low scrap rate, simple structure, and small machining workload.

[0003] Application No.: ZL2022207036216. This invention relates to the field of oil pipe connector molds, aiming to improve user convenience and work efficiency. Specifically, it is a production mold for automotive oil pipe connectors, comprising a mold body with symmetrically fixed mold cavities inside. The invention utilizes a screw to drive a slider to slide to one side, causing a lower push block fixed at the upper end of the slider to abut against an upper push block. Simultaneously, the upper push block and its upper fixed stop block push against the mold cavity, thus ejecting the molded part from the mold cavity for easy removal by the user. This improves the convenience of the device and increases work efficiency. Furthermore, the water inlet and outlet surrounding the mold cavity allow for cyclical cooling of the mold cavity after the solution is poured in, enabling rapid cooling and molding of the internal solution, thereby improving work efficiency.

[0004] Application No.: 2021224351876 In the field of water pipe connector mold technology, a water pipe connector molding mold is proposed, including an upper mold and a lower mold. The upper mold has a molding cavity, and the lower mold has a flange cavity. The molding cavity and the flange cavity form an injection cavity. The lower mold has threaded holes that communicate with the flange cavity. It also includes positioning rods, at least three of which extend into the flange cavity at one end. Each positioning rod has a threaded section that threadedly engages with the threaded hole. The positioning rods are used to support a reinforcing plate. The upper mold has multiple assembly holes. Four uprights are mounted on the lower mold, located within the flange cavity. The uprights are inserted into the assembly holes to position the upper and lower molds. This technical solution solves the problem in the prior art where the reinforcing plate cannot be positioned during injection molding.

[0005] The aforementioned oil pipe joint mold employs a mold body, mold cavity, screw, sliding block, lower ejector block, upper ejector block, stop block, inlet, and outlet to achieve circulation for cooling and heat dissipation of the mold cavity, allowing the internal solution to cool and solidify rapidly. The aforementioned water supply pipe joint mold employs an upper mold, lower mold, forming cavity, flange cavity, injection cavity, threaded hole, positioning rod, reinforcing plate, assembly hole, and upright rod, enabling the upright rod to be inserted into the assembly hole to position the upper and lower molds, solving the problem in the prior art where the reinforcing plate cannot be positioned during injection molding. Utility Model Content

[0006] This utility model provides a die for processing hexagonal nut pipe joint blanks. The lower die is rectangular in shape, with an extrusion cavity in the center and a sliding groove on the side. A sliding die is installed inside the sliding groove. An upper die is rectangular in shape and a punch is installed at the bottom of the upper die. After the red-hot iron column is placed into the extrusion cavity, the upper die moves the punch downward to extrude the iron column into the shape of a hexagonal nut.

[0007] The technical solution of this utility model is as follows: A mold for processing hexagonal nut pipe joint blanks includes a lower mold 1. The lower mold 1 has a hexagonal cavity 2, a cylindrical cavity 3, and a flow divider 4 inside. A sliding mold 5 is provided inside the right side of the lower mold 1. A threaded hole 6 is provided inside the sliding mold 5. A positioning rod 7 is installed on the upper part of the lower mold 1. An upper mold 8 is installed on the upper part of the positioning rod 7. A connecting ring 9 is installed on the upper part of the upper mold 8. A punch 10 is installed at the bottom of the upper mold 8.

[0008] Furthermore, the lower mold 1 is a cuboid made of 45# steel, and a groove with a smaller top and a larger bottom is provided inside the upper right side of the lower mold 1, and a sliding mold 5 is placed inside the groove.

[0009] Furthermore, the sliding mold 5 is a trapezoid with a smaller top and a larger bottom. A hexagonal cavity 2 is provided at the contact point between the lower left side of the sliding mold 5 and the center inside the lower mold 1. A conical flow divider 4 is provided at the downward part of the center of the hexagonal cavity 2. A cylindrical cavity 3 is provided at the contact point between the upper left side of the sliding mold 5 and the center of the upper part of the lower mold 1. A wire hole 6 is provided at the center of the right side of the sliding mold 5.

[0010] Furthermore, a cylindrical positioning rod 7 is installed at each of the four corners of the lower mold 1, and the four positioning rods 7 are movably connected to the sliding holes at the four corners of the upper mold 8.

[0011] Furthermore, the upper mold 8 is rectangular in shape, with a circular sliding hole at each of the four corners. A connecting ring 9 is installed in the center of the upper mold 8, and a punch 10 is installed vertically downwards in the center of the bottom of the upper mold 8.

[0012] Furthermore, the punch 10 is cylindrical, and a conical punch made of tungsten steel is installed at the bottom of the punch 10. The surface of the punch is uniformly provided with V-shaped flow channels.

[0013] Beneficial effects: Currently, the disadvantages of hexagonal nut pipe fitting blanks formed by forging round steel are a high scrap rate during the forging process, the need to drill a center hole during subsequent lathe machining, and a large amount of machining work. The disadvantages of hexagonal nut pipe fitting blanks formed by molten iron casting are that subsequent lathe machining requires drilling a center hole and turning the outer diameter, resulting in a large amount of machining work.

[0014] A die for processing hexagonal nut pipe fitting blanks uses a cuboid-shaped lower die with a pressing cavity in the center and a sliding groove on the side of the lower die. A sliding die is installed inside the sliding groove. A cuboid-shaped upper die is installed on top of the lower die, and a punch is installed at the bottom of the upper die. After the red-hot iron column is placed into the pressing cavity, the upper die drives the punch to move downward to press the iron column into the shape of a hexagonal nut. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a mold for processing hexagonal nut pipe fitting blanks;

[0016] In the diagram, 1 is the lower mold, 2 is the hexagonal cavity, 3 is the cylindrical cavity, 4 is the flow divider, 5 is the sliding mold, 6 is the thread hole, 7 is the positioning rod, 8 is the upper mold, 9 is the connecting ring, and 10 is the punch. Detailed Implementation

[0017] The structure and shape of this utility model will be described in detail below with reference to the accompanying drawings and reference numerals:

[0018] Example 1

[0019] See appendix Figure 1A mold for processing hexagonal nut pipe fitting blanks includes a lower mold 1, which supports a sliding mold 5, a hexagonal cavity 2, a cylindrical cavity 3, and a flow divider 4. The lower mold 1 internally contains the hexagonal cavity 2, the cylindrical cavity 3, and the flow divider 4. The hexagonal cavity 2 is used to shape the hexagonal nut blank, the cylindrical cavity 3 is used to shape the joint portion of the hexagonal nut blank, and the flow divider 4 is used to divert the metal extruded from the bottom of the punch 10. The sliding mold 5 is located on the right side of the lower mold 1. The sliding mold 5 is used to close and separate the hexagonal cavity 2 and the cylindrical cavity 3. Take out the extruded hexagonal nut pipe connector. The sliding mold 5 has a threaded hole 6 inside, which is used to connect to the transverse hydraulic cylinder. The lower mold 1 is equipped with a positioning rod 7, which is used to position the upper mold 8. The upper mold 8 is installed on the positioning rod 7. The upper mold 8 is used to install the punch 10 and drive the punch 10 to move up and down. The upper mold 8 is equipped with a connecting ring 9, which is used to connect to the hydraulic cylinder above the upper mold 8. The bottom of the upper mold 8 is equipped with a punch 10, which is used to extrude and shape the metal inside the hexagonal cavity 2 and the cylindrical cavity 3.

[0020] See appendix Figure 1 The lower mold 1 is a cuboid made of 45# steel. The upper right side of the lower mold 1 has a groove that is smaller at the top and larger at the bottom, and the sliding mold 5 is placed inside the groove.

[0021] See appendix Figure 1 The sliding mold 5 is a trapezoid with a smaller top and a larger bottom. A hexagonal cavity 2 is provided at the contact point between the lower left side of the sliding mold 5 and the center inside the lower mold 1. A conical flow divider 4 is provided at the downward part of the center of the hexagonal cavity 2. A cylindrical cavity 3 is provided at the contact point between the upper left side of the sliding mold 5 and the center of the upper part of the lower mold 1. A wire hole 6 is provided at the center of the right side of the sliding mold 5.

[0022] See appendix Figure 1 A cylindrical positioning rod 7 is installed at each of the four corners of the lower mold 1, and the four positioning rods 7 are movably connected to the sliding holes at the four corners of the upper mold 8.

[0023] Referring to the attached drawings, the upper mold 8 is rectangular in shape with a circular sliding hole at each of the four corners. A connecting ring 9 is installed in the center of the upper mold 8, and a punch 10 is installed vertically downwards in the center of the bottom of the upper mold 8.

[0024] Referring to the attached drawings, the punch 10 is cylindrical, and a conical punch made of tungsten steel is installed at the bottom of the punch 10. The surface of the punch is uniformly provided with V-shaped flow channels.

[0025] Based on the above simple description of the process of using a mold for processing hexagonal nut pipe fitting blanks, the worker places a red-hot metal cylinder into the cylindrical cavity 3 and the hexagonal cavity 2, and then operates the control button of the hydraulic press, causing the piston rod of the hydraulic cylinder above the hydraulic press to push the upper mold 8 downward. The upper mold 8 drives the punch 10 to move downward synchronously. The punch at the bottom of the punch 10 forcibly squeezes the center of the metal cylinder out of the circular hole. At the same time, the central part of the metal cylinder will flow downward and spread outward. The metal in the spread-out part will quickly fill the cylindrical cavity 3, the hexagonal cavity 2 and the flow-dividing cavity 4. When the punch approaches the flow-dividing cavity 4, the metal in the flow-dividing cavity 4... The blank is forced into the hexagonal cavity 2 along the flow channel on the punch. When the punch reaches the flow channel 4, the hexagonal nut pipe joint blank is extruded and formed. The worker operates the control button of the hydraulic press to force the piston rod of the hydraulic cylinder above the hydraulic press to drive the upper mold 8 and punch 10 to return to the upper position. At the same time, the piston rod of the hydraulic cylinder on the right side of the hydraulic press pulls the sliding mold 5 to the right by 5-15cm. At this time, the hexagonal cavity 2 and the cylindrical cavity 3 are split into two at the same time. The worker uses pliers to clamp the extruded hexagonal nut pipe joint blank and take it out. Then, the worker uses the control button of the hydraulic press to force the piston rod of the hydraulic cylinder on the right side of the hydraulic press to push the sliding mold 5 to the left to return to the upper position.

Claims

1. A die for machining hexagon nut pipe joint blanks, comprising a lower die, characterized in that The inside of the lower mould is provided with hexagonal cavity, cylindrical cavity and shunt cavity, the inside of the right side of the lower mould is provided with sliding mould, the inside of the sliding mould is provided with wire hole, the upper surface of the lower mould is installed with positioning rod, the upper surface of the positioning rod is installed with upper mould, the upper surface of the upper mould is installed with connecting ring, and the bottom of the upper mould is installed with punch needle.

2. The die for machining a hexagon nut pipe joint blank according to claim 1, characterized by the lower die The cuboid shape is made of 45# steel, the inside of the upper right side of the lower mould is provided with upper small and lower large recess, and the sliding mould is placed in the recess.

3. The die for machining a hexagon nut pipe joint blank according to claim 1, characterized in that The sliding mould is upper small and lower large trapezoid, the lower side of the left side of the sliding mould is provided with hexagonal cavity, the center of the hexagonal cavity is provided with conical shunt cavity, the upper side of the left side of the sliding mould is provided with cylindrical cavity, and the center of the right side of the sliding mould is provided with wire hole.

4. The die for machining a hexagon nut pipe joint blank according to claim 1, characterized in that Four cylindrical positioning rods are installed on the four corners of the upper surface of the lower mould, and the four positioning rods are movably connected with the sliding holes of the four corners of the upper mould.

5. The die for machining a hexagon nut pipe joint blank according to claim 1, characterized in that The upper mould is cuboid shape, four corners are provided with circular sliding hole, the center of the upper surface of the upper mould is installed with connecting ring, and the center of the bottom of the upper mould is vertically installed with punch needle.

6. The die for machining a hexagon nut pipe joint blank according to claim 1, characterized in that The punch needle is cylindrical, the bottom of the punch needle is installed with tungsten steel conical punch, and the surface of the punch is uniformly provided with V-shaped shunt groove.

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