A segmented hydraulic push bench for processing of wear-resistant composite pipe and a method of forming

Abstract

The application discloses a segmented hydraulic propelling forming machine for wear-resistant composite pipe processing and a forming method, and belongs to the wear-resistant composite pipe processing field.The segmented hydraulic propelling forming machine comprises a base, a first hydraulic cylinder is fixedly connected to the top left side of the base, and a mounting plate is fixedly connected to the top right side of the base;an extrusion mechanism is arranged at the top left side of the mounting plate, the extrusion mechanism comprises a first mounting block which is slidably connected with the mounting plate, an output shaft end of the first hydraulic cylinder is fixedly connected with an extension pipe, and the bottom of the extension pipe is provided with a mounting rack which is fixedly connected with the mounting plate.The extrusion direction is set as the side extrusion, the extrusion length of the composite pipe is no longer limited by the stroke of the hydraulic cylinder, long-size composite pipes can be continuously extruded, the production capacity of the equipment is remarkably expanded, and the technical problem that the stroke of the hydraulic cylinder restricts the length of the pipe in the traditional axial extrusion mode is solved.

Description

Technical Field

[0001] This invention relates to the field of wear-resistant composite pipe processing, and more specifically, to a segmented hydraulic propulsion forming machine and forming method for wear-resistant composite pipe processing. Background Technology

[0002] Wear-resistant composite pipe is a type of pipe made of two or more different materials. It typically consists of an outer structural pipe and an inner wear-resistant layer. It is widely used in material conveying pipelines in industries such as mining, metallurgy, power, and chemicals to resist the erosion and wear of the pipe wall by solid particulate materials.

[0003] The main manufacturing methods for wear-resistant composite pipes include centrifugal casting, welding, self-propagating high-temperature synthesis, and extrusion composite. Among them, the extrusion composite method uses a hydraulic propulsion device to extrude the composite preform, which has the advantages of high production efficiency, good material bonding strength, and controllable dimensional accuracy.

[0004] Chinese patent CN104607588B discloses a composite pipe extrusion molding device, but it has the following problems: First, the traditional extrusion device adopts axial extrusion, and the length of the extruded pipe is limited by the stroke of the hydraulic cylinder, making it difficult to produce long-length composite pipes; second, the fit clearance between the extrusion die and the extrusion cylinder is fixed and cannot be flexibly adjusted according to the specifications of the composite pipe, resulting in a narrow range of applications; third, after extrusion, the die needs to be heated to prepare for the next extrusion, but the heating device is set up independently, which is cumbersome to operate and affects production efficiency. Therefore, a segmented hydraulic propulsion molding machine and molding method for processing wear-resistant composite pipes are proposed. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention aims to provide a segmented hydraulic propulsion molding machine and molding method for processing wear-resistant composite pipes. By setting the extrusion direction to side extrusion, the extrusion length of the composite pipe is no longer limited by the stroke of the hydraulic cylinder, and long-length composite pipes can be continuously extruded, significantly expanding the production capacity of the equipment and solving the technical problem of the hydraulic cylinder stroke restricting the pipe length in the traditional axial extrusion method.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A segmented hydraulic propulsion forming machine and forming method for processing wear-resistant composite pipes includes a base, a first hydraulic cylinder is fixedly connected to the top left side of the base, and an mounting plate is fixedly connected to the top right side of the base.

[0008] An extrusion mechanism is provided on the top left side of the mounting plate. The extrusion mechanism includes a first mounting block that is slidably connected to the mounting plate, and an extension tube is fixedly connected to the end of the output shaft of the first hydraulic cylinder.

[0009] Furthermore, the bottom of the protruding tube is provided with a mounting bracket that is fixedly connected to the mounting plate, and the top of the mounting bracket passes through the protruding tube and is fixedly connected to a second extrusion block.

[0010] Furthermore, a cylinder is fixedly connected inside the first mounting block, and a first pressing block is fixedly connected to the right side of the cylinder. A moving groove is provided inside the protruding tube to accommodate the movement of the mounting frame.

[0011] Furthermore, the front end of the protruding tube is provided with a circular hole to accommodate the movement of the second extrusion block, and a second hydraulic cylinder is fixedly connected to the top right side of the mounting plate, with the output shaft end of the second hydraulic cylinder fixedly connected to the first mounting block.

[0012] Furthermore, a heating mechanism is provided between the extrusion mechanism and the second hydraulic cylinder, and the heating mechanism includes a second mounting block fixedly connected to the mounting plate.

[0013] Furthermore, a toothed plate is fixedly connected to the right side of the first mounting block, a drive groove is provided inside the second mounting block corresponding to the position of the toothed plate, and an extension hole is provided in the middle of the second mounting block.

[0014] Furthermore, a flip plate is rotatably connected to the top of the protruding hole, a heating element is fixedly connected to the left side of the flip plate, and a driving element is connected between the flip plate and the second mounting block.

[0015] Furthermore, the opposing surfaces of the first extrusion block and the second extrusion block are arc surfaces, both the first extrusion block and the second extrusion block are detachable structures, and there is a gap between the first extrusion block and the second extrusion block for extruding the composite preform into a composite tube.

[0016] Furthermore, when the toothed plate moves within the drive groove, it drives the drive component to rotate. The drive component causes the flipping plate and the heating component to flip 90 degrees. After flipping, the heating component extends into the interior of the cylinder to heat the cylinder and the first extrusion block. A cylinder is fixedly connected to the top of the mounting bracket, and the second extrusion block is fixedly connected to the top of the cylinder.

[0017] A forming method for a segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes includes the following steps:

[0018] S1: The composite preform is placed inside the cylinder of the extrusion mechanism, and the second hydraulic cylinder extends to abut against the first mounting block to fix it in place;

[0019] S2: Start the first hydraulic cylinder, extend the tube to the right and push the composite preform. The composite preform is extruded from the gap between the first extrusion block and the second extrusion block to form a composite tube. The composite tube passes through the extension hole of the second mounting block.

[0020] S3: After extrusion is completed, the first hydraulic cylinder retracts, and the second hydraulic cylinder continues to extend to push the first mounting block to move to the right. The toothed plate on the first mounting block passes through the drive groove of the second mounting block. The toothed plate drives the drive component to rotate. The drive component drives the flipping plate and the heating component to rotate counterclockwise by ninety degrees. The heating component extends into the cylinder to heat the cylinder and the first extrusion block.

[0021] S4: After heating is completed, the second hydraulic cylinder retracts, causing the first mounting block to move to the left and reset. The toothed plate exits from the drive slot, and the drive unit drives the flipping plate and heating element to rotate 90 degrees clockwise and reset. The heating element exits from the cylinder.

[0022] S5: Place the new composite preform inside the cylinder and repeat steps S1 to S4 for continuous segmented hydraulic propulsion molding.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] This solution sets the extrusion direction to side extrusion, so the extrusion length of the composite tube is no longer limited by the stroke of the hydraulic cylinder. Long composite tubes can be continuously extruded, which significantly expands the production capacity of the equipment and solves the technical problem of the hydraulic cylinder stroke restricting the tube length in the traditional axial extrusion method.

[0025] This solution, by setting up detachable first and second extrusion blocks, allows operators to quickly replace the appropriate extrusion blocks according to the required wall thickness and diameter specifications of the composite pipe, achieving multi-purpose use of one machine, flexibly adapting to the production needs of composite pipes of different specifications, and reducing equipment investment and changeover costs.

[0026] In this design, the opposing surfaces of the first and second extrusion blocks are designed with arc surfaces, which reduces friction and wear between the extrusion blocks during the extrusion process and extends the service life of the mold. The boundary line between the two materials inside the composite preform is located between the first and second extrusion blocks, making the two materials more evenly distributed and the bonding interface stronger during the extrusion process of the composite tube.

[0027] This solution utilizes the cooperation between the toothed plate and the driving component to automatically trigger the flipping plate and heating element to rotate 90 degrees and extend into the cylinder during the lateral movement of the extrusion mechanism. This heats the cylinder and the first extrusion block. After heating is complete, the heating element automatically retracts when the extrusion mechanism resets. The entire heating process requires no manual intervention, thus automating mold heating and improving production efficiency and operational safety. Attached Figure Description

[0028] Figure 1This is a schematic diagram of the structure of the propellant molding machine of the present invention;

[0029] Figure 2 This is a schematic diagram of the extrusion mechanism of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the first extrusion block and the cylinder of the present invention;

[0031] Figure 4 This is a schematic diagram of the mounting bracket of the present invention;

[0032] Figure 5 This is a schematic diagram of the protruding tube of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the second mounting block of the present invention;

[0034] Figure 7 This is a side sectional view of the second mounting block of the present invention.

[0035] Explanation of the labels in the diagram:

[0036] 1. Base; 11. First hydraulic cylinder; 12. Second hydraulic cylinder; 13. Mounting plate; 2. Extrusion mechanism; 21. First mounting block; 211. First extrusion block; 212. Cylinder; 22. Extension tube; 221. Moving groove; 222. Circular hole; 23. Mounting bracket; 231. Cylindrical column; 232. Second extrusion block; 24. Toothed plate; 3. Heating mechanism; 31. Second mounting block; 311. Drive groove; 312. Extension hole; 32. Heating element; 33. Tilting plate; 34. Drive element. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1 to 7 A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes includes a base 1. A first hydraulic cylinder 11 is fixedly connected to the top left side of the base 1, and a mounting plate 13 is fixedly connected to the top right side of the base 1. An extrusion mechanism 2 is provided on the top left side of the mounting plate 13. The extrusion mechanism 2 includes a first mounting block 21 that is slidably connected to the mounting plate 13. An extension pipe 22 is fixedly connected to the end of the output shaft of the first hydraulic cylinder 11. The first hydraulic cylinder 11 drives the extension pipe 22 to move toward the extrusion mechanism 2.

[0039] The bottom of the protruding tube 22 is provided with a mounting bracket 23 that is fixedly connected to the mounting plate 13. The top of the mounting bracket 23 passes through the protruding tube 22 and is fixedly connected to a second extrusion block 232. A cylinder 212 is fixedly connected inside the first mounting block 21, and a first extrusion block 211 is fixedly connected to the right side of the cylinder 212.

[0040] like Figure 3 and Figure 4 As shown, the composite preform is placed inside the cylinder 212, the first hydraulic cylinder 11 is activated, the extension tube 22 moves to the right, and the end of the extension tube 22 squeezes the left end of the composite preform. Under pressure, the composite preform is extruded from the right end of the cylinder 212. When it passes through the annular gap between the first extrusion block 211 and the second extrusion block 232, it is extruded into the desired cross-sectional shape of the composite tube. Since there is a set annular gap between the first extrusion block 211 and the second extrusion block 232, the composite preform is extruded from the gap to form a composite tube with a uniformly distributed outer and inner layer.

[0041] The opposing surfaces of the first extrusion block 211 and the second extrusion block 232 are designed with arc surfaces, which reduces friction and wear between them during the extrusion process. The boundary line between the two materials inside the composite preform is located at the gap between the first extrusion block 211 and the second extrusion block 232, making the two materials more evenly distributed in the circumferential direction of the extruded composite tube and the bonding interface more solid. Since the side extrusion method is adopted, the extrusion length of the composite tube is not limited by the stroke of the first hydraulic cylinder 11, and longer composite tubes can be continuously extruded, making the device more convenient to use.

[0042] Both the first extrusion block 211 and the second extrusion block 232 are detachable structures. By replacing the first extrusion block 211 and the second extrusion block 232 with different inner and outer diameters, the extrusion gap can be flexibly adjusted according to the required wall thickness and diameter specifications of the composite pipe, making the device more widely applicable.

[0043] like Figure 5 As shown, the inside of the extension tube 22 is provided with a moving groove 221 to accommodate the movement of the mounting bracket 23. When the extension tube 22 moves to the right, the mounting bracket 23 slides relative to each other inside the moving groove 221, which does not affect the normal movement of the extension tube 22. The front end of the extension tube 22 is provided with a circular hole 222 to accommodate the movement of the second extrusion block 232. During the movement of the extension tube 22, the second extrusion block 232 extends into the circular hole 222, so that the extension tube 22 will not be interfered with by the second extrusion block 232, making the device more convenient to use.

[0044] A second hydraulic cylinder 12 is fixedly connected to the top right side of the mounting plate 13. The output shaft end of the second hydraulic cylinder 12 is fixedly connected to the first mounting block 21. When the extrusion mechanism 2 is subjected to the extrusion force of the first hydraulic cylinder 11, the second hydraulic cylinder 12 is locked and presses against the first mounting block 21, so that the first mounting block 21 will not move to the right, ensuring that the extrusion pressure is fully applied to the composite preform, making it easier to extrude the composite tube. After the composite tube is extruded, the second hydraulic cylinder 12 is activated, driving the first mounting block 21 to move to the right, so that the second extrusion block 232 is separated from the cylinder 212, making room for the next placement of the composite preform.

[0045] like Figure 1 , Figure 6 , Figure 7 As shown, a heating mechanism 3 is provided between the extrusion mechanism 2 and the second hydraulic cylinder 12. The heating mechanism 3 includes a second mounting block 31 fixedly connected to the mounting plate 13. A toothed plate 24 is fixedly connected to the right side of the first mounting block 21. When the toothed plate 24 moves to the right with the first mounting block 21, the toothed plate 24 moves toward the second mounting block 31. A drive groove 311 is provided inside the second mounting block 31 at the position corresponding to the toothed plate 24. The toothed plate 24 passes through the drive groove 311 and moves horizontally therein.

[0046] The second mounting block 31 has an extension hole 312 in the middle. The extruded composite tube passes through the extension hole 312 to prevent the second mounting block 31 from interfering with the extruded composite tube. The top of the extension hole 312 is rotatably connected to a flip plate 33 via a rotating shaft. A heating element 32 is fixedly connected to the left side of the flip plate 33. The flip plate 33 and the second mounting block 31 are rotatably connected via a driving element 34, which is a torsion spring or a rotary cylinder.

[0047] When the toothed plate 24 moves to the right in the drive groove 311, the teeth on the toothed plate 24 push the protrusions on the surface of the drive member 34, causing the drive member 34 to rotate. The drive member 34, along with the flipping plate 33 and the heating member 32, rotates 90 degrees counterclockwise. At this time, the first mounting block 21 continues to move to the right with the first extrusion block 211. The heating member 32 extends into the interior of the cylinder 212 and the inner cavity of the first extrusion block 211, thereby preheating the cylinder 212 and the first extrusion block 211. The heating temperature is set according to the material of the composite preform, so that the cylinder 212 and the first extrusion block 211 are at a suitable temperature when the composite preform is placed next time, which is beneficial to the initial flow and forming of the composite preform.

[0048] After heating is completed, the second hydraulic cylinder 12 drives the extrusion mechanism 2 to return to its original position to the left, the toothed plate 24 exits from the drive groove 311, and the drive component 34 rotates 90 degrees clockwise to reset under the action of elasticity or pneumatic force, carrying the flipping plate 33 and the heating component 32. The heating component 32 exits from the cylinder 212. At this time, the operator can place the new hollow composite preform inside the cylinder 212 and start the next round of extrusion molding. The entire heating process is completed automatically without manual intervention, making the device more convenient to use and significantly improving production efficiency.

[0049] Please see Figures 1 to 7 A forming method for a segmented hydraulic propulsion forming machine used for processing wear-resistant composite pipes includes the following steps:

[0050] S1: The composite preform is placed inside the cylinder 212 of the extrusion mechanism 2, and the second hydraulic cylinder 12 extends to abut against the first mounting block 21 to fix it.

[0051] S2: Start the first hydraulic cylinder 11, extend the tube 22 to the right and push the composite preform. The composite preform is extruded from the gap between the first extrusion block 211 and the second extrusion block 232 to form a composite tube. The composite tube passes through the extension hole 312 of the second mounting block 31.

[0052] S3: After extrusion is completed, the first hydraulic cylinder 11 retracts, and the second hydraulic cylinder 12 continues to extend to push the first mounting block 21 to move to the right. The toothed plate 24 on the first mounting block 21 passes through the drive groove 311 of the second mounting block 31. The toothed plate 24 drives the drive component 34 to rotate. The drive component 34 drives the flipping plate 33 and the heating component 32 to rotate counterclockwise by ninety degrees. The heating component 32 extends into the cylinder 212 to heat the cylinder 212 and the first extrusion block 211.

[0053] S4: After heating is completed, the second hydraulic cylinder 12 retracts, driving the first mounting block 21 to move to the left and reset. The toothed plate 24 exits from the drive groove 311. The drive component 34 drives the flipping plate 33 and the heating component 32 to rotate 90 degrees clockwise and reset. The heating component 32 exits from the cylinder 212.

[0054] S5: Place the new composite preform inside the cylinder 212 and repeat steps S1 to S4 for continuous segmented hydraulic propulsion molding.

[0055] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes, comprising a base (1), characterized in that: A first hydraulic cylinder (11) is fixedly connected to the top left side of the base (1), and a mounting plate (13) is fixedly connected to the top right side of the base (1). An extrusion mechanism (2) is provided on the top left side of the mounting plate (13). The extrusion mechanism (2) includes a first mounting block (21) that is slidably connected to the mounting plate (13). An extension tube (22) is fixedly connected to the end of the output shaft of the first hydraulic cylinder (11).

2. The segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes according to claim 1, characterized in that: The bottom of the protruding tube (22) is provided with a mounting bracket (23) that is fixedly connected to the mounting plate (13), and the top of the mounting bracket (23) passes through the protruding tube (22) and is fixedly connected with a second extrusion block (232).

3. A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes according to claim 2, characterized in that: The first mounting block (21) has a cylinder (212) fixedly connected inside, and a first extrusion block (211) is fixedly connected to the right side of the cylinder (212). The protruding tube (22) has a moving groove (221) inside to accommodate the movement of the mounting frame (23).

4. A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes according to claim 3, characterized in that: The front end of the protruding tube (22) is provided with a circular hole (222) to accommodate the movement of the second extrusion block (232). The top right side of the mounting plate (13) is fixedly connected to a second hydraulic cylinder (12), and the output shaft end of the second hydraulic cylinder (12) is fixedly connected to the first mounting block (21).

5. A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes according to claim 4, characterized in that: A heating mechanism (3) is provided between the extrusion mechanism (2) and the second hydraulic cylinder (12). The heating mechanism (3) includes a second mounting block (31) that is fixedly connected to the mounting plate (13).

6. A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes according to claim 5, characterized in that: A toothed plate (24) is fixedly connected to the right side of the first mounting block (21), and a drive groove (311) is provided inside the second mounting block (31) corresponding to the position of the toothed plate (24). An extension hole (312) is provided in the middle of the second mounting block (31).

7. A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes according to claim 6, characterized in that: A flip plate (33) is rotatably connected to the top of the protrusion hole (312), a heating element (32) is fixedly connected to the left side of the flip plate (33), and a driving element (34) is connected between the flip plate (33) and the second mounting block (31).

8. A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes according to claim 7, characterized in that: The opposing surfaces of the first extrusion block (211) and the second extrusion block (232) are arc surfaces. Both the first extrusion block (211) and the second extrusion block (232) are detachable structures. There is a gap between the first extrusion block (211) and the second extrusion block (232) for extruding the composite preform into a composite tube.

9. A segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes according to claim 8, characterized in that: When the toothed plate (24) moves in the drive groove (311), it drives the drive member (34) to rotate. The drive member (34) drives the flipping plate (33) and the heating member (32) to flip ninety degrees. After the heating member (32) flips, it extends into the interior of the cylinder (212) to heat the cylinder (212) and the first extrusion block (211). The top of the mounting bracket (23) is fixedly connected to a cylinder (231), and the second extrusion block (232) is fixedly connected to the top of the cylinder (231).

10. A forming method applicable to the segmented hydraulic propulsion forming machine for processing wear-resistant composite pipes as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: The composite preform is placed inside the cylinder (212) of the extrusion mechanism (2), and the second hydraulic cylinder (12) extends to abut against the first mounting block (21) to fix it; S2: Start the first hydraulic cylinder (11), extend the tube (22) to the right and push the composite blank. The composite blank is extruded from the gap between the first extrusion block (211) and the second extrusion block (232) to form a composite tube. The composite tube passes through the extension hole (312) of the second mounting block (31). S3: After extrusion is completed, the first hydraulic cylinder (11) retracts and the second hydraulic cylinder (12) continues to extend to push the first mounting block (21) to move to the right. The toothed plate (24) on the first mounting block (21) passes through the drive groove (311) of the second mounting block (31). The toothed plate (24) drives the drive component (34) to rotate. The drive component (34) drives the flipping plate (33) and the heating component (32) to rotate counterclockwise by 90 degrees. The heating component (32) extends into the cylinder (212) to heat the cylinder (212) and the first extrusion block (211). S4: After heating is completed, the second hydraulic cylinder (12) retracts and drives the first mounting block (21) to move to the left to reset. The toothed plate (24) exits from the drive groove (311). The drive component (34) drives the flipping plate (33) and the heating component (32) to rotate 90 degrees clockwise to reset. The heating component (32) exits from the cylinder (212). S5: Place the new composite preform inside the cylinder (212) and repeat steps S1 to S4 for continuous segmented hydraulic propulsion molding.

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