A servo double-tube water expansion equipment

Abstract

The present invention provides a servo double-tube water-inflated device, which belongs to the technical field of pipe processing. The present invention clamps the pipe raw material to be processed through a forming die assembly, and seals the two ends of the pipe raw material through a sealing assembly and a water-inflated pre-deformation assembly, and then fills the pipe raw material with high-pressure water through the water-inflated pre-deformation assembly to force the pipe wall of the pipe raw material to be pre-deformed, and finally pushes the forming die assembly to move through the extrusion drive assembly, and further squeezes the pipe raw material through the forming die assembly to make the pipe wall of the pre-deformed pipe raw material continue to deform to form corrugations, which is simple to process and reduces the difficulty of corrugation forming. At the same time, a number of die pieces are provided in the forming die assembly to simultaneously extrude the pipe wall of different positions of the pipe raw material, thereby realizing the synchronous forming of a number of corrugations and improving processing efficiency. In addition, the uniformity of the corrugation processing is also guaranteed, so that the uniformity of the processed corrugations is achieved, the product quality is higher, and it is conducive to the promotion and use of the product.

Description

Technical Field

[0001] The invention relates to the technical field of pipe fitting processing, and in particular to a servo double-tube water expansion device. Background Art

[0002] As the output structure of fluid, pipe fittings are widely used and have complex operating environments. Therefore, improving the performance of pipe fittings has become the key to pipe fitting manufacturing.

[0003] Currently, piping systems are formed by interconnecting several pipes. To facilitate installation and ensure accuracy, the flexibility of the pipe joints needs to be increased, allowing them to bend and deform to accommodate joint offsets. Existing pipes on the market typically feature corrugations at their joints, forming bellows. However, existing processing equipment has a simple structure, with the die head only capable of forming one circle of corrugations. Furthermore, the die head lacks a pre-deformation mechanism during processing, making corrugation difficult and inefficient. This can also lead to uneven corrugations, impacting product quality. Summary of the Invention

[0004] In response to the above-mentioned problems existing in the prior art, the present invention aims to provide a servo double-tube water-expansion equipment, which is equipped with a water-expansion pre-deformation component, a forming die component, a sealing component and an extrusion drive component. The pipe raw material is clamped by the forming die component, and the pipe wall of the pipe raw material is pre-deformed by the sealing component and the water-expansion pre-deformation component. The forming die component is then pushed to move by the extrusion drive component, so that the forming die component further extrude the pipe raw material, so that the pipe wall of the pipe raw material continues to deform and form corrugations, thereby reducing the difficulty of corrugation forming and improving processing efficiency. At the same time, it also ensures that the corrugation processing is uniform, the uniformity is better, and the product quality is higher.

[0005] The specific technical solutions are as follows:

[0006] A servo double-tube water expansion device has the following characteristics, including:

[0007] base;

[0008] A forming die assembly is provided on the base. The forming die assembly includes a fixed plate, a movable plate, and a plurality of die pieces. The fixed plate and the movable plate are arranged in parallel and spaced apart. The plurality of die pieces are arranged in parallel in the space between the movable plate and the fixed plate. The movable plate, the fixed plate, and each die piece are provided with corresponding through holes. A deformation groove with an enlarged aperture is provided at the through hole on each die piece and at the opening on one side close to the fixed plate or the movable plate.

[0009] An extrusion drive assembly is provided on the base and is located on the side of the movable plate facing away from the fixed plate. The extrusion drive assembly includes an extrusion drive and a push plate. The push plate is arranged parallel to the movable plate. The extrusion drive is located on the side of the push plate facing away from the movable plate, and its drive shaft is fixedly connected to the push plate.

[0010] The blocking assembly is arranged on the extrusion drive assembly, and the blocking assembly includes a blocking driver and a blocking rod. The blocking driver is installed on the side of the push plate close to the movable plate. One end of the blocking rod is connected to the drive shaft of the blocking driver, and the other end of the blocking rod is arranged toward the through hole on the movable plate.

[0011] The water-rising pre-deformation component includes a tightening driver, a tightening plate and a water injection rod. The tightening driver is arranged on the base and is located on the side of the fixed plate away from the movable plate. The tightening plate is arranged between the tightening driver and the fixed plate and is connected to the drive shaft of the tightening driver. One end of the water injection rod is installed on the tightening plate and connected to the high-pressure water source pipeline, and the other end of the water injection rod is arranged toward the through hole on the fixed plate.

[0012] The above-mentioned servo double-tube water inflation equipment also includes a lower clamping assembly, which includes a top frame, a down-pressing driver and a down-pressing block. The top frame is placed horizontally above the forming mold assembly, and the down-pressing driver is installed vertically downward on the top frame. The pressure block is arranged between the horizontal frame and the forming mold assembly and is connected to the drive shaft of the down-pressing driver.

[0013] The above-mentioned servo double-tube water-inflating equipment also includes a reset component, which includes an extension frame and a reset driver. The extension frame is arranged between the push plate and the movable plate and is fixedly connected to the movable plate. The reset driver is arranged on the side of the forming mold assembly and arranged toward the push plate. At the same time, the drive shaft of the reset driver abuts against or is connected to the extension frame.

[0014] The above-mentioned servo double-tube water inflation equipment, wherein the forming mold assembly also includes a bottom plate and a top plate, the bottom plate is arranged on the base, and the bottom plate and the top plate are respectively located below and above the fixed plate, the movable plate and the mold piece. At the same time, one end of the top plate and the bottom plate are respectively fixedly connected to the upper and lower parts of the fixed plate, the bottom surface of the top plate is in contact with the top of the movable plate and the mold piece, and the top surface of the bottom plate is in contact with the bottom of the movable plate and the mold piece.

[0015] The above-mentioned servo double-tube water inflation equipment, wherein each mold piece includes an upper mold piece and a lower mold piece, the movable plate includes an upper movable plate and a lower movable plate, the fixed plate includes an upper fixed plate and a lower fixed plate, the upper mold piece and the lower mold piece, the upper movable plate and the lower movable plate, and the upper fixed plate and the lower fixed plate are facing each other in the vertical direction. At the same time, the opposite side of the upper movable plate and the lower movable plate, the opposite side of the upper mold piece and the lower mold piece, and the opposite side of the upper fixed plate and the lower fixed plate are respectively provided with semicircular holes and constitute the through holes on the movable plate, the corresponding mold piece and the fixed plate.

[0016] The above-mentioned servo double-tube water inflation equipment, wherein the opposite side of the upper movable plate and the lower movable plate and the opposite side of the upper mold piece and the corresponding lower mold piece are respectively provided with limit blocks and limit grooves, and the limit blocks extend into the corresponding limit grooves.

[0017] The above-mentioned servo double-tube water-inflating equipment, wherein a number of spaced connection holes are provided on the movable plate, the fixed plate and each mold piece, and connecting columns are provided between the movable plate and the mold piece, between two adjacent mold pieces, and between the mold piece and the fixed plate. The longitudinal section of the connecting column is arranged in an "I" shape, and the ends of the two ends of the connecting column form limiting protrusions. The two ends of the connecting column respectively pass through the corresponding connection holes on the two adjacent mold pieces, the adjacent movable plate and mold piece, and the adjacent mold piece and the fixed plate, and are limited by the limiting protrusions. In addition, the connecting columns of each mold piece used to connect the structures on both sides are staggered.

[0018] The above-mentioned servo double-tube water inflation equipment, wherein the forming mold assembly also includes a forming guide rod, and corresponding guide holes are opened on the movable block and each mold piece. One end of the guide rod is fixed to the fixed plate, and the other end of the guide rod passes through the corresponding guide holes on each mold piece and the movable block.

[0019] The above-mentioned servo double-tube water-inflating equipment also includes a support frame, which includes a base frame and two side frames. The base frame is arranged on the base, and the forming mold assembly is arranged on the base frame. The two side frames are arranged vertically and are respectively located at both ends of the base frame and connected to the base frame. The two ends of the top frame of the lower clamping assembly are respectively fixedly connected to the upper parts of the two side frames. At the same time, the extrusion driver and the clamping driver are respectively installed on the two side frames.

[0020] The above-mentioned servo double-tube water inflation equipment, wherein, both the push plate and the clamping plate are provided with adjustment components, the adjustment components include a slider and a slide groove, and the side of the push plate close to the movable plate and the side of the clamping plate close to the fixed plate are provided with horizontally arranged slide grooves, and the slide grooves are arranged perpendicular to the axial direction of the extrusion drive. At the same time, sliders are provided in the slide grooves on the push plate and the clamping plate, and the sealing drive and the water injection rod are respectively installed on the sliders on the push plate and the clamping plate.

[0021] The positive effects of the above technical solution are:

[0022] The above-mentioned servo double-tube water-inflated equipment arranges a water-inflated pre-deformation component, a forming die component, a sealing component and an extrusion drive component on the base, uses the forming die component to clamp the pipe raw material, and then blocks the two ends of the pipe raw material through the sealing component and the water-inflated pre-deformation component, and then fills the pipe raw material with high-pressure water through the water-inflated pre-deformation component to pre-deform the pipe wall of the pipe raw material, and then pushes the forming die component to move through the extrusion drive component, so that the forming die component further extrude the pipe raw material and the pipe wall of the already pre-deformed pipe raw material continues to deform to form corrugations, which reduces the difficulty of corrugation forming, improves processing efficiency, and also ensures the uniformity of corrugation processing, ensures the uniformity of corrugations, improves product quality, and is conducive to the promotion and use of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of an embodiment of a servo double-tube water expansion device of the present invention;

[0024] Figure 2 A structural diagram of a molding die assembly according to a preferred embodiment of the present invention;

[0025] Figure 3 A structural diagram of a movable plate of a forming die assembly according to a preferred embodiment of the present invention;

[0026] Figure 4 A structural diagram of a molding die assembly during die installation according to a preferred embodiment of the present invention;

[0027] Figure 5 A structural diagram of a die piece of a molding die assembly according to a preferred embodiment of the present invention;

[0028] Figure 6 This is an installation diagram of an extrusion drive assembly and a blocking assembly according to a preferred embodiment of the present invention;

[0029] Figure 7 This is a structural diagram of a water-swelling pre-deformation assembly according to a preferred embodiment of the present invention;

[0030] Figure 8 This is a structural diagram of a lower pressing assembly according to a preferred embodiment of the present invention;

[0031] Figure 9 A structural diagram of a reset assembly according to a preferred embodiment of the present invention;

[0032] Figure 10 This is a structural diagram of a support frame according to a preferred embodiment of the present invention.

[0033] In the accompanying drawings: 1. Base; 2. Forming mold assembly; 21. Fixed plate; 22. Movable plate; 23. Die; 24. Bottom plate; 25. Top plate; 26. Forming guide rod; 211. Upper fixed plate; 212. Lower fixed plate; 221. Through hole; 222. Upper movable plate; 223. Lower movable plate; 231. Deformation groove; 232. Upper die; 233. Lower die; 234. Connecting hole; 235. Connecting column; 236. Guide hole; 2321. Limit block; 2331. Limit groove; 2351. Limiting protrusion ;3. Extrusion drive assembly;31. Extrusion drive;32. Push plate;321. Adjustment assembly;3211. Slider;3212. Slide;4. Blocking assembly;41. Blocking drive;42. Blocking rod;5. Water swelling pre-deformation assembly;51. Clamping drive;52. Clamping plate;53. Water injection rod;6. Lower clamping assembly;61. Top frame;62. Lower pressure drive;63. Lower pressure block;7. Reset assembly;71. Extension frame;72. Reset drive;8. Support frame;81. Base frame;82. Side frame. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the attached Figure 1 To the attached Figure 10 The technical solution provided by the present invention is described in detail, but the following content is not intended to limit the present invention.

[0035] Figure 1 This is a structural diagram of an embodiment of a servo double-tube water expansion device of the present invention. Figure 1 As shown, the servo double-tube water expansion equipment provided in this embodiment includes: a base 1, a forming die assembly 2, an extrusion drive assembly 3, a blocking assembly 4 and a water expansion pre-deformation assembly 5.

[0036] Figure 2 A structural diagram of a molding die assembly according to a preferred embodiment of the present invention; Figure 3 A structural diagram of a movable plate of a forming die assembly according to a preferred embodiment of the present invention; Figure 4 A structural diagram of a molding die assembly during die installation according to a preferred embodiment of the present invention; Figure 5 FIG. 1 is a structural diagram of a mold piece of a molding die assembly according to a preferred embodiment of the present invention. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 as well as Figure 5As shown, the forming die assembly 2 is mounted on the base 1. The forming die assembly 2 further comprises a fixed plate 21, a movable plate 22, and a plurality of die pieces 23. The fixed plate 21 and the movable plate 22 are arranged parallel to each other and spaced apart, allowing for installation space between the fixed plate 21 and the movable plate 22. The size of the installation space between the two plates can be adjusted by moving the movable plate 22. Furthermore, the plurality of die pieces 23 are arranged parallel to each other within the space between the movable plate 22 and the fixed plate 21. When the movable plate 22 moves, the installation space for the plurality of die pieces 23 can be reduced or expanded, pushing the die pieces 23 to extrude the pipe stock, thus facilitating the subsequent extrusion of the pipe stock to form the corrugated tube. Furthermore, corresponding through-holes 221 are provided in the movable plate 22, the fixed plate 21, and each die piece 23. These through-holes 221 allow the pipe stock to be installed, allowing the pipe stock to contact each die piece 23, facilitating subsequent extrusion of the pipe stock by the die pieces 23. Furthermore, each die 23 has a deformation groove 231 with an enlarged diameter, located near the opening on one side of the fixed plate 21 or the movable plate 22 and through the hole 221. This allows the wall of the raw material to deform toward the deformation groove 231 when the die 23 is extruding the tube, thereby forming corrugations on the tube wall. The deformation groove 231 provides a clearance and a shaping reference for the extrusion of the corrugations on the tube, ensuring uniformity and uniformity of the corrugation process, thereby ensuring product quality. Furthermore, multiple die 23s can simultaneously process multiple corrugations on the raw material, improving processing efficiency.

[0037] Figure 6 FIG. 1 is an installation diagram of an extrusion drive assembly and a blocking assembly according to a preferred embodiment of the present invention; FIG. Figure 1 、 Figure 2 as well as Figure 6 As shown, the extrusion drive assembly 3 is disposed on the base 1. At this point, the extrusion drive assembly 3 is located on the side of the movable plate 22 facing away from the fixed plate 21, providing conditions for subsequently driving the movable plate 22 away from or toward the fixed plate 21. Simultaneously, the extrusion drive assembly 3 includes an extrusion driver 31 and a push plate 32. The push plate 32 is arranged parallel to the movable plate 22, allowing the push plate 32 to subsequently contact the movable plate 22 and drive the movable plate 22 to move. Furthermore, the extrusion driver 31 is located on the side of the push plate 32 facing away from the movable plate 22, and its drive shaft is fixedly connected to the push plate 32. The extrusion driver 31 drives the push plate 32 toward or away from the movable plate 22, providing power for the movement of the movable plate 22.

[0038] Specifically, the blocking assembly 4 is disposed on the extrusion drive assembly 3. In this case, the blocking assembly 4 further includes a blocking driver 41 and a blocking rod 42. The blocking driver 41 is mounted on the side of the push plate 32 near the movable plate 22, so that the blocking driver 41 can be arranged toward one side of the movable plate 22, providing conditions for subsequent action on the end of the pipe material in the through hole 221 of the movable plate 22. In addition, one end of the blocking rod 42 is connected to the drive shaft of the blocking driver 41, and the other end of the blocking rod 42 is arranged toward the through hole 221 on the movable plate 22. When the drive shaft of the blocking driver 41 is extended or retracted, the blocking rod 42 can be extended into or withdrawn from the through hole 221 of the movable plate 22, thereby sealing or releasing the end of the pipe material in the through hole 221, providing conditions for subsequent water expansion pre-deformation operations. It is worth noting that a plug is provided at the end of the blocking rod 42 facing the through hole 221 on the movable plate 22, thereby improving the sealing performance.

[0039] Figure 7 This is a structural diagram of a water swelling pre-deformation component according to a preferred embodiment of the present invention. Figure 1 、 Figure 2 as well as Figure 7As shown, the water-swelling pre-deformation assembly 5 is disposed on the base 1 , and the water-swelling pre-deformation assembly 5 includes a pressing driver 51 , a pressing plate 52 and a water injection rod 53 . At this time, the clamping driver 51 is arranged on the base 1 and is located on the side of the fixed plate 21 away from the movable plate 22, that is, the clamping driver 51 and the blocking driver 41 are respectively located at the two ends of the forming mold assembly 2, and the clamping plate 52 is arranged between the clamping driver 51 and the fixed plate 21 and is connected to the driving shaft of the clamping driver 51, so that the clamping plate 52 can be driven by the clamping driver 51 to move toward or away from the fixed plate 21, and one end of the water injection rod 53 is installed on the clamping plate 52 and connected to the high-pressure water source pipeline. At the same time, the other end of the water injection rod 53 is arranged toward the through hole 221 on the fixed plate 21, so that when the clamping plate 52 moves toward or away from the fixed plate 21, the water injection rod 53 can be inserted into the through hole 221 of the fixed plate 21 or pulled out from the through hole 221, thereby realizing the clamping of the forming mold assembly 2 The other end of the pipe material to be processed is sealed or opened, and the water injection rod 53 is connected to the high-pressure water source pipeline, so that after the two ends of the pipe material to be processed are respectively sealed by the sealing rod 42 and the water injection rod 53, high-pressure water can be injected into the pipe material to be processed through the water injection rod 53, thereby forcing the pipe wall of the pipe material to be processed to deform, and since the pipe material is in the through holes 221 of several mold pieces 23, the pipe wall of the pipe material expands into the gap between the two adjacent mold pieces 23, completing the pre-deformation operation of the pipe material, and the pipe wall of the pre-deformed pipe material can resist the corresponding mold piece 23, so that when the subsequent mold piece 23 moves, it can continue to squeeze the pipe wall without causing relative sliding between the mold piece 23 and the pipe wall of the pipe material, providing conditions for subsequent secondary extrusion to form corrugations. It is worth noting that after the pipe wall of the pipe raw material is pre-deformed and before the extrusion driver 31 is actuated, the blocking driver 41 or the blocking driver 41 and the pressing driver 51 automatically release pressure and are in a free no-load state, so that after the extrusion driver 31 is actuated, the blocking rod 42 and the blocking driver 41 will not be damaged, and the structural design is more reasonable.

[0040] Figure 8 This is a structural diagram of the lower pressing assembly of a preferred embodiment of the present invention. Figure 1 and Figure 8As shown, a lower clamping assembly 6 is also provided on the base 1. At this time, the lower clamping assembly 6 includes a top frame 61, a lower clamping driver 62 and a lower clamping block 63. The top frame 61 is placed horizontally above the forming die assembly 2, and the lower clamping driver 62 is installed vertically downward on the top frame 61, and the clamping block is arranged between the horizontal frame and the forming die assembly 2. At the same time, the clamping block is connected to the driving shaft of the lower clamping driver 62, so that when the lower clamping driver 62 drives the clamping block to move toward the forming die assembly 2, the clamping block can approach and stick to the movable plate 22, the fixed plate 21 and the die 23, preventing the movable plate 22 from being subsequently squeezed and causing the movable plate 22 and the die 23 to deviate when moving. The movement stability is higher and it is safer and more reliable.

[0041] Figure 9 FIG. 1 is a structural diagram of a reset assembly according to a preferred embodiment of the present invention. Figure 1 and Figure 9 As shown, the base 1 is also provided with a reset assembly 7. The reset assembly 7 includes an extension frame 71 and a reset driver 72. The extension frame 71 is positioned between the push plate 32 and the movable plate 22 and is fixedly connected to the movable plate 22. The extension frame 71 extends the length of the movable plate 22, allowing the extension frame 71 to drive the movable plate 22 to move. Furthermore, the reset driver 72 is positioned beside the molding die assembly 2 and is arranged toward the push plate 32. The drive shaft of the reset driver 72 abuts or is connected to the extension frame 71, aligning the reset driver 72 in the opposite direction to the extrusion driver 31. This allows the movable plate 22 to be reset under the action of the reset driver 72 and the extension frame 71 after the movable block is pushed toward the fixed plate 21 by the large extrusion driver 31, thus facilitating subsequent operation. It is worth noting that a space is provided on the extension frame 71 for the sealing rod 42 to pass through. At the same time, the push plate 32 connected to the extrusion driver 31 also contacts the extension frame 71 when pushing the movable plate 22 to move. This can not only ensure that the sealing rod 42 can smoothly seal the port of the processed pipe material, but also realize the extrusion of the movable plate 22. In addition, it can also reset the movable plate 22, and the structural design is more reasonable.

[0042] More specifically, the forming mold assembly 2 on the base 1 also includes a bottom plate 24 and a top plate 25. At this time, the bottom plate 24 is set on the base 1, and the bottom plate 24 and the top plate 25 are respectively located below and above the fixed plate 21, the movable plate 22 and the mold 23. At the same time, one end of the top plate 25 and the bottom plate 24 are fixedly connected to the upper and lower parts of the fixed plate 21, respectively, and the bottom surface of the top plate 25 is in contact with the top of the movable plate 22 and the mold 23, and the top surface of the bottom plate 24 is in contact with the bottom of the movable plate 22 and the mold 23. A structure approximately in the shape of a "U" is formed by the top plate 25, the bottom plate 24 and the fixed plate 21, so that several molds 23 can move and be guided in the space formed by the top plate 25, the bottom plate 24 and the fixed plate 21, further improving the stability of the movement of the mold 23, thereby improving the quality of the corrugations obtained by extruding the mold 23, and the structural design is more reasonable.

[0043] More specifically, each die piece 23 in the forming die assembly 2 comprises an upper die piece 232 and a lower die piece 233, i.e., each die piece 23 is a split structure. Simultaneously, the movable plate 22 is also divided into an upper movable plate 222 and a lower movable plate 223, and the fixed plate 21 is also divided into an upper fixed plate 211 and a lower fixed plate 212. The upper movable plate 222, the upper die piece 232, and the upper fixed plate 211 form one extrusion structure, while the lower movable plate 223, the lower die piece 233, and the lower fixed plate 212 form another extrusion structure. Furthermore, the upper die piece 232 and the lower die piece 233, the upper movable plate 222 and the lower movable plate 223, and the upper fixed plate 211 and the lower fixed plate 212 are vertically aligned, allowing the two extrusion structures to correspond to each other and form a split structure, facilitating the loading of pipe raw materials and the unloading of the processed corrugated pipes. At the same time, semicircular holes are respectively provided on the opposite side of the upper movable plate 222 and the lower movable plate 223, the opposite side of the upper mold piece 232 and the lower mold piece 233, and the opposite side of the upper fixed plate 211 and the lower fixed plate 212, forming the movable plate 22, the corresponding mold piece 23 and the through hole 221 on the fixed plate 21. Since the pipe raw material is placed in the through hole 221, the pipe raw material and the processed corrugated pipe are between the two groups of extrusion structures, so that the operator can load the pipe raw material and unload the processed corrugated pipe by opening and closing the two groups of extrusion structures, and the structural design is more reasonable.

[0044] More specifically, a limiting block 2321 and a limiting groove 2331 are respectively provided on the opposite side of the upper movable plate 222 and the lower movable plate 223, and on the opposite side of the upper mold 232 and the corresponding lower mold 233, and the limiting block 2321 extends into the corresponding limiting groove 2331. Through the cooperation of the limiting block 2321 and the limiting groove 2331, the movement of the mold 23 is guided and restricted, which further improves the stability of the movement of the mold 23 and makes the structural design more reasonable.

[0045] More specifically, a plurality of spaced connection holes 234 are provided on the movable plate 22, the fixed plate 21 and each mold piece 23. At this time, a connecting column 235 is provided between the movable plate 22 and the mold piece 23. At the same time, a connecting column 235 is also provided between the two adjacent mold pieces 23. In addition, a connecting column 235 is also provided between the mold piece 23 and the fixed plate 21, that is, the movable plate 22, the plurality of mold pieces 23 and the fixed plate 21 are formed into a whole through the plurality of connecting columns 235. Moreover, the longitudinal section of the connecting column 235 is arranged in an "I" shape, and the ends of the two ends of the connecting column 235 form a limiting protrusion 2351. The two ends of the connecting column 235 pass through the two adjacent mold pieces 23, The corresponding connection holes 234 on the adjacent movable plates 22 and mold pieces 23, as well as the adjacent mold pieces 23 and fixed plates 21, are limited by the limiting protrusions 2351. When the movable plate 22 approaches the fixed plate 21, the movable plate 22 can directly push the mold pieces 23 to move, causing the mold pieces 23 to squeeze the pipe wall of the pipe material to form corrugations. In addition, the limiting protrusions 2351 can ensure the uniformity of the joint distance of the mold pieces 23, preventing the problem of different movement amounts of the mold pieces 23 at different positions. In addition, when the movable plate 22 moves toward the side away from the fixed plate 21, the movable plate 22 can drag the mold pieces 23 to move through the connecting posts 235 to complete the reset operation of the mold pieces 23, which is more reasonable in structural design. In addition, the connecting posts 235 used to connect the structures on both sides of each mold piece 23 are staggered, avoiding the problem of the connecting posts 235 used to connect the structures on both sides of the mold piece 23 facing each other and colliding with each other, which is more reasonable in structural design.

[0046] More specifically, the molding die assembly 2 is further provided with a molding guide rod 26. At this time, corresponding guide holes 236 are opened on the movable block and each mold piece 23, and one end of the guide rod is fixed on the fixed plate 21 to ensure the stability of the guide rod installation. At the same time, the other end of the guide rod passes through the corresponding guide holes 236 on each mold piece 23 and the movable block, so that when the movable plate 22 and several mold pieces 23 move toward or away from the fixed plate 21, they can be guided by the cooperation of the guide holes 236 and the guide rods, thereby ensuring the stability of the movement of the movable plate 22 and the mold pieces 23, and further ensuring the quality of the product.

[0047] Figure 10 FIG. 1 is a structural diagram of a support frame according to a preferred embodiment of the present invention. Figure 1 and Figure 10As shown, the base 1 is also provided with a support frame 8. At this time, the support frame 8 includes a bottom frame 81 and two side frames 82. The bottom frame 81 is set on the base 1, and the forming mold assembly 2 is set on the bottom frame 81. At the same time, the two side frames 82 are arranged vertically and are respectively located at both ends of the bottom frame 81 and fixedly connected to the bottom frame 81. The two ends of the top frame 61 of the lower clamping assembly 6 are respectively fixedly connected to the upper parts of the two side frames 82. At the same time, the extrusion driver 31 and the tightening driver 51 are respectively installed on the two side frames 82. The bottom frame 81 provides a mounting carrier for the forming mold assembly 2, and the two side frames 82 provide a mounting carrier for the extrusion driver 31 and the tightening driver 51, which facilitates the installation of the above structure on the base 1. In addition, the bottom frame 81, the two side frames 82 and the top frame 61 can form a rectangular frame structure, and the forming mold assembly 2, the extrusion drive assembly 3, the sealing assembly 4 and the water expansion pre-deformation assembly 5 are all arranged on the same frame, thereby forming a locking force frame, which makes the structural strength of the equipment higher and more safe and reliable.

[0048] More specifically, the push plate 32 in the extrusion drive assembly 3 and the abutting plate 52 in the water expansion pre-deformation assembly 5 are both provided with an adjustment assembly 321. At this time, the adjustment assembly 321 further includes a slider 3211 and a slide groove 3212. The side of the push plate 32 close to the movable plate 22 and the side of the abutting plate 52 close to the fixed plate 21 are both provided with a horizontally arranged slide groove 3212, and the slide groove 3212 is arranged perpendicular to the axial direction of the extrusion drive 31. At the same time, the slide groove 3212 on the push plate 32 and the abutting plate 52 is provided with a slider 3211, so that the slider 3211 can pass through the slide groove 3212 to move between the corresponding push plate 32 or the abutting plate. 52, and the blocking driver 41 and the water injection rod 53 are respectively installed on the slider 3211 on the push plate 32 and the clamping plate 52, so that the positions of the blocking driver 41, the blocking rod 42 and the water injection rod 53 can be adjusted by the slider 3211, so that when the products of different specifications and models are replaced for processing later, the positions of the blocking rod 42 and the water injection rod 53 can be adjusted by the slider 3211 to face the center of the pipe raw material, thereby improving the sealing effect and ensuring higher safety.

[0049] Preferably, the extrusion driver 31 is a servo electric cylinder, which has high feeding precision and convenient control, further ensuring the accuracy and uniformity of the corrugation processing on the pipe fitting, and the structural design is more reasonable.

[0050] The servo double-tube water-inflating equipment provided in this embodiment includes a base 1, a forming die assembly 2, an extrusion drive assembly 3, a sealing assembly 4 and a water-inflating pre-deforming assembly 5; the forming die assembly 2 is used to clamp the pipe material to be processed, and the two ends of the pipe material are sealed by the sealing assembly 4 and the water-inflating pre-deforming assembly 5, and then high-pressure water is filled into the pipe material through the water-inflating pre-deforming assembly 5 to force the pipe wall of the pipe material to be pre-deformed, and finally the forming die assembly 2 is pushed to move by the extrusion drive assembly 3, and the forming die assembly 2 is used to further extrude the pipe material so that the pipe wall of the pre-deformed pipe material continues to deform to form corrugations, which is simple to process and reduces the difficulty of corrugation forming. At the same time, a plurality of die pieces 23 are provided in the forming die assembly 2 to simultaneously extrude the pipe wall of different positions of the pipe material, thereby realizing the synchronous forming of a plurality of corrugations and improving the processing efficiency. In addition, the uniformity of the corrugation processing is ensured, so that the uniformity of the processed corrugations is achieved, the product quality is higher, and it is conducive to the promotion and use of the product.

[0051] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A servo double-tube water expansion device, characterized in that: include: base; A forming die assembly, the forming die assembly being arranged on the base, the forming die assembly comprising a fixed plate, a movable plate, and a plurality of die pieces, the fixed plate and the movable plate being arranged in parallel and spaced apart, the plurality of die pieces being arranged in parallel in the space between the movable plate and the fixed plate, the movable plate, the fixed plate, and each of the die pieces being provided with corresponding through holes, and a deformation groove with an enlarged aperture being provided at the opening of the through hole on each of the die pieces and on one side close to the fixed plate or the movable plate; An extrusion drive assembly is disposed on the base and located on a side of the movable plate facing away from the fixed plate. The extrusion drive assembly includes an extrusion drive and a push plate. The push plate is arranged parallel to the movable plate. The extrusion drive is located on a side of the push plate facing away from the movable plate, and its drive shaft is fixedly connected to the push plate. a blocking assembly, the blocking assembly being arranged on the extrusion drive assembly, the blocking assembly comprising a blocking driver and a blocking rod, the blocking driver being mounted on a side of the push plate close to the movable plate, one end of the blocking rod being connected to a drive shaft of the blocking driver, and the other end of the blocking rod being arranged toward the through hole on the movable plate; A water-expanding pre-deformation assembly, comprising a tightening driver, a tightening plate, and a water injection rod. The tightening driver is disposed on the base and is located on a side of the fixed plate facing away from the movable plate. The tightening plate is disposed between the tightening driver and the fixed plate and is connected to a drive shaft of the tightening driver. One end of the water injection rod is mounted on the tightening plate and connected to a high-pressure water source pipe, and the other end of the water injection rod is arranged toward the through hole on the fixed plate. In addition, the push plate and the clamping plate are both provided with adjustment components, and the adjustment components include a slider and a slide groove. The side of the push plate close to the movable plate and the side of the clamping plate close to the fixed plate are both provided with horizontally arranged slide grooves, and the slide grooves are both perpendicular to the axial arrangement of the extrusion driver. At the same time, the sliders are provided in the slide grooves on the push plate and the clamping plate, and the blocking driver and the water injection rod are respectively installed on the sliders on the push plate and the clamping plate.

2. The servo double-tube water expansion equipment according to claim 1, characterized in that: It also includes a lower clamping assembly, which includes a top frame, a down-pressing driver and a down-pressing block. The top frame is placed horizontally above the forming die assembly, and the down-pressing driver is installed vertically downward on the top frame. The pressure block is arranged between the top frame and the forming die assembly and is connected to the drive shaft of the down-pressing driver.

3. The servo double-tube water expansion equipment according to claim 1, characterized in that: It also includes a reset component, which includes an extension frame and a reset driver. The extension frame is arranged between the push plate and the movable plate and is fixedly connected to the movable plate. The reset driver is arranged on the side of the forming mold assembly and is arranged toward the side of the push plate. At the same time, the drive shaft of the reset driver abuts against or is connected to the extension frame.

4. The servo double-tube water expansion equipment according to claim 1, characterized in that: The molding die assembly also includes a bottom plate and a top plate, the bottom plate is arranged on the base, and the bottom plate and the top plate are respectively located below and above the fixed plate, the movable plate and the mold piece. At the same time, one end of the top plate and the bottom plate are respectively connected to the upper and lower parts of the fixed plate, the bottom surface of the top plate is in contact with the top of the movable plate and the mold piece, and the top surface of the bottom plate is in contact with the bottom of the movable plate and the mold piece.

5. The servo double-tube water expansion equipment according to claim 1, characterized in that: Each of the mold pieces includes an upper mold piece and a lower mold piece, the movable plate includes an upper movable plate and a lower movable plate, and the fixed plate includes an upper fixed plate and a lower fixed plate. The upper mold piece and the lower mold piece, the upper movable plate and the lower movable plate, and the upper fixed plate and the lower fixed plate are facing each other in the vertical direction. At the same time, the opposite side of the upper movable plate and the lower movable plate, the opposite side of the upper mold piece and the lower mold piece, and the opposite side of the upper fixed plate and the lower fixed plate are respectively provided with semicircular holes and constitute the through holes on the movable plate, the corresponding mold piece and the fixed plate.

6. The servo double-tube water expansion equipment according to claim 5, characterized in that: A limiting block and a limiting groove are respectively provided on one side opposite to the upper movable plate and the lower movable plate, and on one side opposite to the upper mold piece and the corresponding lower mold piece, and the limiting block extends into the corresponding limiting groove.

7. The servo double-tube water expansion equipment according to claim 1, characterized in that: The movable plate, the fixed plate and each of the mold pieces are provided with a number of spaced connection holes, and connecting columns are provided between the movable plate and the mold piece, between two adjacent mold pieces, and between the mold piece and the fixed plate. The longitudinal section of the connecting column is arranged in an "I" shape, and the ends of both ends of the connecting column form limiting protrusions. The two ends of the connecting column respectively pass through the corresponding connection holes on the two adjacent mold pieces, the adjacent movable plate and the mold piece, and the adjacent mold piece and the fixed plate, and are limited by the limiting protrusions. In addition, the connecting columns of each mold piece used to connect the structures on both sides are staggered.

8. The servo double-tube water expansion equipment according to claim 1, characterized in that: The molding die assembly also includes a molding guide rod, and corresponding guide holes are provided on the movable plate and each mold piece. One end of the guide rod is fixed to the fixed plate, and the other end of the guide rod passes through the corresponding guide holes on each mold piece and the movable plate.

9. The servo double-tube water expansion equipment according to claim 2, characterized in that: It also includes a support frame, which includes a base frame and two side frames. The base frame is arranged on the base, and the forming mold assembly is arranged on the base frame. The two side frames are arranged vertically and are respectively located at the two ends of the base frame and fixedly connected to the base frame. The two ends of the top frame of the lower clamping assembly are respectively fixedly connected to the upper parts of the two side frames. At the same time, the extrusion driver and the clamping driver are respectively installed on the two side frames.

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