Auxiliary heating extrusion forming device and process for prefabricated tee joint

Abstract

The application relates to an auxiliary heating extrusion forming device and process for a prefabricated tee joint, which comprises a device body, an upper die plate installed at the top of the device body, a lower die plate installed at the bottom of the device body, the upper die plate and the lower die plate being mutually pressed to form an extrusion cavity, and a sealing part used for sealing the connection part of the driving part and the cavity. The application is provided with a liquid storage part for storing forming liquid. When the tee pipe is formed, the driving part drives the telescopic rod to move, the telescopic rod pulls the extrusion plate on one side to move to one side, the forming liquid in the liquid storage tank is compressed from one side of the liquid storage tank to the other side, and is extruded into the connecting pipe, so that the energy consumption required for extrusion forming liquid can be saved, the forming liquid can be more quickly compressed into the cavity, and the pipe quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of extrusion forming, in particular to a preformed tee joint auxiliary heating extrusion forming device and process. BACKGROUND

[0002] Tee pipe is a commonly used pipe fitting in industrial production, and the traditional manufacturing process of tee pipe mainly includes forging, casting and welding. The above three traditional processes have different degrees of defects. At present, the extrusion process is mainly used to manufacture tee pipe, that is, a special hydraulic machine is used to inject liquid into a pipe blank with the same diameter as the tee pipe, and the pipe blank is extruded by the synchronous centering movement of the two horizontal side cylinders of the hydraulic machine. The volume of the pipe blank becomes smaller after being extruded, and the liquid in the pipe blank increases in pressure as the volume of the pipe blank becomes smaller. When the required pressure for expanding the branch pipe of the tee pipe is reached, the metal material flows along the inner cavity of the die under the double action of the side cylinder and the liquid pressure in the pipe blank to expand the branch pipe.

[0003] At present, there are still many problems in the manufacture of tee pipe by using the extrusion forming process. The sealing between the two ends of the extrusion cavity and the forming head is not strict, which can easily lead to leakage of the forming liquid, and the forming liquid cannot enter the cavity more quickly, which reduces the quality of the pipe fitting. SUMMARY

[0004] The purpose of the present application is to provide a preformed tee joint auxiliary heating extrusion forming device and process.

[0005] In order to solve the above technical problems, the present application provides a preformed tee joint auxiliary heating extrusion forming device and process, which comprises a device body, an upper die plate installed on the top of the device body, a lower die plate installed on the bottom of the device body, the upper die plate and the lower die plate being pressed together to form an extrusion cavity, a driving part for plugging the two ends of the cavity, a sealing part for sealing the connection between the driving part and the cavity, a liquid storage part comprising a liquid storage tank fixed on both sides of the bottom of the device body and a telescopic rod installed inside the liquid storage tank, and a connecting pipe installed between the liquid storage tank and the driving part, the connecting pipe being a flexible pipe, the telescopic rod being connected with the driving part, wherein the driving part is adapted to drive the telescopic rod to extrude the material inside the liquid storage tank.

[0006] Further, one side of the liquid storage tank is fixed with two groups of first springs, one side of the first spring is fixed with an extrusion plate, the end of the telescopic rod is fixed on the extrusion plate, and the extrusion plate is adapted to push the material into the connecting pipe.

[0007] Further, one side of the inner bottom wall of the liquid storage tank is provided with a mounting groove, a first air cylinder is mounted in the mounting groove, and a push plate is mounted on the top of the first air cylinder, wherein when the extrusion plate moves to abut against the push plate, the first air cylinder is driven to make the push plate push the material into the connecting pipe again.

[0008] Further, a supporting table is mounted on one side of the liquid storage tank; the driving part comprises two groups of second air cylinders and a shaped head mounted on the telescopic end of the second air cylinder, and fixing blocks are mounted on the top and bottom of the shaped head; and a telescopic rod is fixed on one side of the fixing block.

[0009] The second air cylinder drives the shaped head to move to the right, so that the extrusion plate extrudes the material in the liquid storage tank to one side.

[0010] Further, the sealing part comprises an oil storage cavity formed in the supporting table, a second spring is mounted on one end of the oil storage cavity, an oil guide rod is fixed on one end of the second spring, and the other end of the oil guide rod is fixed in the shaped head; the oil guide rod is hollow inside, and an oil inlet is formed in one end of the oil guide rod.

[0011] Further, a lining pipe is mounted in the cavity, and the shaped head is adapted to abut against both ends of the lining pipe; an oil outlet is formed in the outer side wall of the shaped head, and an annular groove is formed in the inner side wall of the cavity.

[0012] Further, a supporting pipe cavity is arranged at the bottom of the lower mold plate, and a material supporting head is mounted in the supporting pipe cavity; stop blocks are arranged on both sides of the upper mold plate, and a stop rod is hinged on one side of the fixing block.

[0013] Further, a third air cylinder is mounted on the top of the upper mold plate.

[0014] The application also provides a process of the auxiliary heating extrusion molding device for prefabricated three-way joints, which comprises the following steps:

[0015] S1: placing the lining pipe in the cavity, and starting the third air cylinder to compress the upper mold plate onto the lower mold plate;

[0016] S2: starting the second air cylinder, the second air cylinder drives the shaped head to move into the cavity, the telescopic rod drives the extrusion plate to extrude the molding liquid in the liquid storage tank into the discharge pipe, and the remaining molding liquid is extruded to one side of the liquid storage tank, then the first air cylinder is started, and the first air cylinder rises to extrude the top molding liquid into the lining pipe again;

[0017] S3: when the shaped head moves to the end of the lining pipe, the oil guide rod extrudes the sealing oil in the oil storage cavity to one side, and the sealing oil enters the annular groove through the oil outlet;

[0018] S4: After the extrusion is completed, the upper mold plate is lifted, and the forming head is withdrawn.

[0019] The beneficial effects of the present application are that the auxiliary heating extrusion forming device and process for prefabricated tee joints can store forming liquid through the setting of the liquid storage part, when the tee pipe is formed, the driving part drives the telescopic rod to move, the telescopic rod pulls the extrusion plate on one side to move to one side, the forming liquid in the liquid storage tank is compressed from one side to the other side of the liquid storage tank, and is extruded into the connecting pipe, so that the energy consumption required for extrusion forming liquid can be saved, and the forming liquid can be more quickly compressed into the cavity, and the pipe quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described below in combination with the drawings and examples.

[0021] Figure 1 is a perspective view of the preferred embodiment of the present application;

[0022] Figure 2 is a front view of the preferred embodiment of the present application;

[0023] Figure 3 is a preferred embodiment of the present application Figure 2 is a schematic view of the local enlarged structure at A in the preferred embodiment of the present application.

[0024] In the drawings:

[0025] 1, device body;

[0026] 2, upper mold plate; 21, stop block; 22, stop rod; 23, third cylinder;

[0027] 3, lower mold plate; 31, cavity; 32, liner pipe; 33, branch pipe cavity; 34, material supporting head;

[0028] 4, driving part; 41, support table; 42, second cylinder; 43, forming head; 44, fixed block; 45, oil outlet; 46, discharge pipe;

[0029] 5, sealing part; 51, oil storage cavity; 52, second spring; 53, oil guide rod; 54, oil inlet;

[0030] 6, liquid storage part; 61, liquid storage tank; 62, telescopic rod; 63, connecting pipe; 64, first spring; 65, extrusion plate; 66, mounting groove; 67, first cylinder; 68, push plate. DETAILED DESCRIPTION

[0031] The application will now be further described in combination with the drawings. These drawings are all simplified schematic views, and only schematically show the basic structure of the present application, and therefore only show the structures related to the present application.

[0032] AsFigures 1-3 The auxiliary heating extrusion forming device for prefabricated tee joint of the present application comprises a device body 1, an upper die plate 2 installed on the top of the device body 1, a third cylinder 23 installed on the top of the upper die plate 2, a lower die plate 3 installed on the bottom of the device body 1, the upper die plate 2 and the lower die plate 3 being pressed together to form an extrusion cavity 31, the upper die plate 2 being moved to the top of the lower die plate 3 by starting the third cylinder 23, the upper die plate 2 and the lower die plate 3 being pressed together to form the extrusion cavity 31, and a liner tube 32 being placed in the cavity 31 between the lower die plate 3 and the upper die plate 2.

[0033] The device further comprises a liquid storage part 6, which comprises liquid storage tanks 61 fixed on both sides of the bottom of the device body 1, a telescopic rod 62 installed inside the liquid storage tanks 61, and a connecting pipe 63 installed between the liquid storage tanks 61 and the driving part 4, the connecting pipe 63 being a hose, the telescopic rod 62 being connected with the driving part 4, wherein the driving part 4 is adapted to drive the telescopic rod 62 to extrude the material inside the liquid storage tanks 61, one side of the inside of the liquid storage tanks 61 being fixed with two groups of first springs 64, the first springs 64 being used for resetting the extrusion plate 65, one side of the first springs 64 being fixed with the extrusion plate 65, the end of the telescopic rod 62 being fixed on the extrusion plate 65, and the extrusion plate 65 being adapted to push the material into the connecting pipe 63.

[0034] The liquid storage part 6 is used for storing the forming liquid, when the tee pipe is formed, the driving part 4 drives the telescopic rod 62 to move, the telescopic rod 62 pulls the extrusion plate 65 on one side to move to one side, the forming liquid in the liquid storage tanks 61 is compressed from one side to the other side of the liquid storage tanks 61 and extruded into the connecting pipe 63, so that the energy consumption required for extruding the forming liquid can be saved, the forming liquid can be more quickly compressed into the cavity 31, and the quality of the pipe fitting is improved.

[0035] The device further comprises a driving part 4 used for plugging the two ends of the cavity 31, an installation groove 66 being formed on one side of the inner bottom wall of the liquid storage tanks 61, a first cylinder 67 being installed in the installation groove 66, and a push plate 68 being installed on the top of the first cylinder 67, wherein when the extrusion plate 65 moves to abut against the push plate 68, the first cylinder 67 is driven to make the push plate 68 push the material into the connecting pipe 63 again.

[0036] The first cylinder 67 is installed in the installation groove 66, when a part of the forming liquid is extruded into the liquid storage tanks 61 by the extrusion plate 65, the inside of the cavity 31 still needs to be injected with a part of the forming liquid, the first cylinder 67 is started to rise to extrude the forming liquid on the top into the connecting pipe 63 again.

[0037] The side of the liquid storage tank 61 is provided with a support table 41; the driving part 4 comprises two groups of second air cylinders 42 and a forming head 43 installed at the telescopic end of the second air cylinder 42, the top and bottom of the forming head 43 are provided with fixed blocks 44, one side of the fixed block 44 is fixed with a telescopic rod 62; the inside of the forming head 43 is provided with a discharge pipe 46; wherein the second air cylinder 42 pushes the forming head 43 to move to the right, so that the extrusion plate 65 extrudes the material in the liquid storage tank 61 to one side, and is discharged through the discharge pipe 46.

[0038] By installing the forming head 43 at the end of the second air cylinder 42, the forming head 43 can be used to seal the end of the liner tube 32 inside the cavity 31, and the fixed block 44 is used to fix the telescopic rod 62. When the second air cylinder 42 pushes the forming head 43 to move inside the cavity 31, the electric telescopic rod 62 moves, and the telescopic rod 62 can drive the extrusion plate 65 to extrude the forming liquid inside the liquid storage tank 61 into the discharge pipe 46 and discharge, and extrude the remaining forming liquid to one side of the liquid storage tank 61, so that the energy consumed for pumping the forming liquid into the liner tube 32 can be saved.

[0039] The sealing part 5 is used to seal the connection between the driving part 4 and the cavity 31; the sealing part 5 comprises a oil storage cavity 51 opened in the inside of the support table 41, one end of the oil storage cavity 51 is provided with a second spring 52, one end of the second spring 52 is fixed with an oil guide rod 53, the other end of the oil guide rod 53 is fixed in the forming head 43; the inside of the oil guide rod 53 is hollow, one end of the oil guide rod 53 is provided with an oil inlet 54, the inside of the cavity 31 is provided with a liner tube 32, and the forming head 43 is adapted to abut against both ends of the liner tube 32; the outside wall of the forming head 43 is provided with an oil outlet 45, and the inside wall of the cavity 31 is provided with an annular groove.

[0040] By setting the sealing part 5, the end of the liner tube 32 can be sealed to prevent the injected forming liquid from leaking out, and the oil storage cavity 51 is filled with sealing oil. When the forming head 43 moves to the end of the liner tube 32, the oil guide rod 53 at one end of the oil storage cavity 51 extrudes the sealing oil inside the oil storage cavity 51 to one side, the sealing oil is pressed into the inside of the oil guide pipe through the oil inlet 54, and enters the annular groove through the oil outlet 45, further seals the end of the liner tube 32, prevents the sealing oil from flowing out of the cavity 31, and avoids the leakage of the forming liquid.

[0041] The bottom of the lower mold plate 3 is provided with a branch pipe cavity 33, and the inside of the branch pipe cavity 33 is provided with a material supporting head 34; the two sides of the upper mold plate are provided with stop blocks 21, and one side of the fixed block 44 is hinged with a stop rod 22. By setting the fixed block 44, when the lower mold plate 3 is attached to the upper mold plate, the rod is turned, and when the rod is at one side of the upper and lower mold plates 3, the movement of the upper and lower mold plates 3 can be prevented.

[0042] When the cavity 31 reaches the pressure required for the branch pipe of the tee joint to expand, the liner 32 flows into the branch pipe cavity 33 of the lower die plate 3 to form the branch pipe, and the extrusion molding is completed.

[0043] The application also has a process of auxiliary heating extrusion molding device for prefabricated tee joint, including the following steps:

[0044] S1: Place the liner 32 in the cavity 31, and start the third cylinder 23 to compress the upper die plate onto the lower die plate 3;

[0045] S2: Start the second cylinder 42, the second cylinder 42 drives the molding head 43 to move towards the inside of the cavity 31, the telescopic rod 62 can drive the extrusion plate 65 to extrude the molding liquid in the liquid tank 61 into the discharge pipe 46, and then from the pipe opening, and the remaining molding liquid is extruded into the liquid tank 61 on one side, then start the first cylinder 67, the first cylinder 67 rises to extrude the top molding liquid into the liner 32 again;

[0046] S3: When the molding head 43 moves to the end of the liner 32, the oil guide rod 53 extrudes the sealing oil in the oil storage cavity 51 to one side, and enters the ring groove through the oil outlet 45;

[0047] S4: After the extrusion is completed, the upper die plate is lifted and the molding head 43 is withdrawn.

[0048] Based on the above ideal embodiments according to the application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the application. The technical scope of the application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. An auxiliary heating extrusion forming device for prefabricated tee joints, characterized in that, The device body (1) comprises An upper mold plate (2) is installed on the top of the device body (1); A lower mold plate (3) is installed on the bottom of the device body (1), and the upper mold plate (2) and the lower mold plate (3) are pressed together to form a cavity (31); A driving part is used to block both ends of the cavity (31); A sealing part (5) is used to seal the connection between the driving part and the cavity (31); A liquid storage part (6) comprises a liquid storage tank (61) fixed on both sides of the bottom of the device body (1), a telescopic rod (62) installed inside the liquid storage tank (61), and a connecting pipe (63) installed between the liquid storage tank (61) and the driving part, the connecting pipe (63) is a flexible pipe, and the telescopic rod (62) is connected with the driving part; The driving part is suitable for driving the telescopic rod (62) to extrude the molding liquid in the liquid storage tank (61); One side of the inside of the liquid storage tank (61) is fixed with two groups of first springs (64), one side of the first spring (64) is fixed with an extrusion plate (65), and the end of the telescopic rod (62) is fixed on the extrusion plate (65), and the extrusion plate (65) is suitable for pushing the molding liquid into the connecting pipe (63); One side of the bottom wall of the liquid storage tank (61) is provided with a mounting groove (66), and a first air cylinder (67) is installed in the mounting groove (66), and a push plate (68) is installed on the top of the first air cylinder (67), When the extrusion plate (65) moves to abut against the push plate (68), the first air cylinder (67) is driven to make the push plate (68) push the molding liquid into the connecting pipe (63) again; One side of the liquid storage tank (61) is provided with a supporting table (41); The driving part comprises two groups of second air cylinders (42) and a molding head (43) installed on the telescopic end of the second air cylinder (42), and the top and bottom of the molding head (43) are provided with fixed blocks (44), and one side of the fixed block (44) is provided with a telescopic rod (62); The second air cylinder (42) pushes the molding head (43) to move to the right, so that the extrusion plate (65) extrudes the molding liquid in the liquid storage tank (61) to one side; The sealing part (5) comprises an oil storage cavity (51) opened in the inside of the supporting table (41), one end of the oil storage cavity (51) is provided with a second spring (52), one end of the second spring (52) is fixed with an oil guide rod (53), and the other end of the oil guide rod (53) is fixed in the molding head (43); The inside of the oil guide rod (53) is hollow, and an oil inlet (54) is formed at one end of the oil guide rod (53).

2. The auxiliary heating and extrusion molding device for prefabricated tee joint according to claim 1, wherein A liner (32) is installed in the cavity (31), and the molding head (43) is suitable for abutting against both ends of the liner (32). ​ The outer side wall of the forming head (43) is provided with an oil outlet, and the inner side wall of the cavity (31) is provided with an annular groove.

3. The auxiliary heating extrusion forming device for prefabricated tee joints according to claim 2, characterized in that, The bottom of the lower die plate (3) is provided with a branch pipe cavity (33), and the inside of the branch pipe cavity (33) is provided with a material supporting head (34). The two sides of the upper die plate (2) are provided with stop blocks (21), and the stop blocks (21) are hingedly connected with stop levers (22).

4. The auxiliary heating extrusion forming device for prefabricated tee joints according to claim 3, characterized in that, The top of the upper die plate (2) is provided with a third air cylinder (23).

5. A process for the auxiliary heating extrusion forming device for prefabricated tee joints according to claim 4, comprising the following steps: S1: placing a lining pipe (32) in the cavity (31), and starting the third air cylinder (23) to compress the upper die plate (2) onto the lower die plate (3); S2: starting the second air cylinder (42), the second air cylinder (42) pushes the forming head (43) to move towards the inside of the cavity (31), the telescopic rod (62) can drive the extrusion plate (65) to extrude the forming liquid in the liquid storage tank (61) into the connecting pipe (63), and then discharge from the pipe opening, and extrude the remaining forming liquid into one side of the liquid storage tank (61), then start the first air cylinder (67), the first air cylinder (67) rises to extrude the forming liquid at the top into the connecting pipe (63) again; S3: when the forming head (43) moves to the end of the lining pipe (32), the oil guide rod (53) extrudes the sealing oil in the oil storage cavity (51) to one side, and enters the annular groove through the oil outlet; S4: after the extrusion is completed, the upper die plate (2) is lifted, and the forming head (43) is withdrawn.

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