A corrugated pipe integrated hydraulic forming machine

Abstract

This application relates to the technical field of corrugated pipes. Specifically, it relates to a corrugated pipe integrated hydraulic forming machine, which includes: a fixed base, a pressurizing device, and a processing module. Among them, the positioning module and the auxiliary module are arranged at intervals on the outer side of the pipe blank, and the first sealing cover and the second sealing cover are hermetically connected to the processing module. The device of this application is firmly fixed. The pressing unit is used to fix the processing module to prevent the processing module from moving. It has a good sealing effect. The pressurizing device is used to ensure the sealing effect at both ends of the pipe blank. With the continuous pressurization of the oil cylinder, the integrated forming effect is good. The corrugation height and spacing are adjustable. By adjusting the disassembly disc of the positioning module, the corrugation height can be adjusted. By increasing or decreasing the auxiliary module, the spacing between the corrugations can be adjusted to ensure integrated forming and a successful extrusion at one time.

Description

Technical Field

[0001] The present application relates to the technical field of corrugated pipes, and more particularly, to a corrugated pipe integrated hydraulic forming machine. Background Art

[0002] A corrugated pipe is a telescopic tubular elastic sensitive element connected along the folding direction. Corrugated pipes are widely used in instruments and meters. Their main purpose is to serve as a measuring element for pressure measuring instruments, converting pressure into displacement or force. The corrugated pipe wall is relatively thin, with high sensitivity, and the measurement range is from dozens of pascals to dozens of megapascals. Its open end is fixed, and the other end is in a free state, and an auxiliary spiral spring or reed is used to increase elasticity. The corrugated pipe is formed by rolling a stainless steel strip into a cylindrical shape and then extruding it by a corrugated pipe forming machine.

[0003] The prior art, such as the corrugated pipe hydraulic forming machine disclosed in the patent application with the publication number CN103252394A, includes a forming device, a die splitting mechanism, an electrical control device, and a hydraulic drive device; a die splitting and combining mechanism is provided, which includes a vertically arranged guide rail, an upper die splitting and combining module and a lower die splitting and combining module that can move along the guide rail; the die splitting plates in the upper die splitting and combining module and the lower die splitting and combining module can be combined through positioning holes and positioning pins.

[0004] The above technologies have the following disadvantages: The corrugated pipe forming equipment is complex, the equipment is relatively large, and the floor area is large, consuming production costs; the corrugated pipe forming extrusion steps are complicated. When extruding a section of pipeline, it is necessary to perform extrusion of different wave bands multiple times; the positioning effect of the corrugated pipe forming die on the corrugated pipe blank is not good enough, affecting the forming quality of the corrugated pipe. Summary of the Invention

[0005] In view of this, the purpose of the present application is to provide an integrated corrugated pipe forming machine that can accurately position the pipe blank, use a fixed base to fix the processing module and the pipe blank, and use a pressurizing device for integrated forming. The device has a simple structure, can be formed in one press, has a high production speed, and the device structure is simple and compact.

[0006] The purpose of the present application is achieved through the following technical solutions:

[0007] A corrugated pipe integrated hydraulic forming machine includes a fixed base, a pressurizing device and a processing module. The fixed base includes a support plate, a connecting rod and a pressing unit. The support plates are fixedly connected by the connecting rod. The pressing unit is used to clamp the processing module. The pressurizing device includes an oil cylinder, a telescopic end and a fixed end. The processing module includes a pipe blank, a sealing block, a positioning module and an auxiliary module. The telescopic end and the fixed end are arranged at both ends of the pipe blank. The sealing block is installed on both sides of the pipe blank. The pipe blank is a hollow cylinder structure. The positioning module includes a disc body and a disassembly disc. Both the disc body and the disassembly disc are circular structures. A groove is provided at the center of the disc body. A first opening is provided on one side of the disc body away from the groove. The groove and the first opening are concentrically arranged. The disassembly disc is placed in the groove. The outer diameter of the disassembly disc is equal to the diameter of the groove. A second opening is provided in the disassembly disc. A third opening is provided at the center of the auxiliary module. The diameter of the third opening is equal to the diameter of the first opening and equal to the diameter of the pipe blank;

[0008] Among them, the positioning module and the auxiliary module are arranged at intervals on the outer side of the pipe blank.

[0009] Preferably, the pressing unit includes a rotating handle, a lifting screw rod, a lifting block, a pressing rod and a fixed rod. The rotating handle is fixedly connected to the lifting screw rod. The lifting block is threadedly connected to the lifting screw rod. Both ends of the pressing rod are fixedly connected to the lifting block.

[0010] Preferably, the telescopic end includes a first sealing cover and a first joint. The output end of the oil cylinder is fixedly connected to the first joint. The fixed end includes a second sealing cover and a second joint. The first sealing cover and the second sealing cover are hermetically connected to the processing module.

[0011] Preferably, the diameter of the second opening is greater than the diameter of the first opening. The height of the disassembly disc is equal to the height of the groove.

[0012] Preferably, the disassembly disc is divided into a left disassembly disc and a right disassembly disc.

[0013] Preferably, an opening is provided on one side of the support plate. The fixed end further includes a pipe body. The pipe body is fixedly connected to the opening. The pipe body extends into the second sealing cover. The second joint is fixedly connected to the end of the pipe body. A first sealing valve, a first water pipe, a first water pump and a first water storage bucket are provided on the side of the pipe body away from the second joint. The first water pipe is connected to the first sealing valve, the first water pump and the first water storage bucket in sequence. A water inlet is provided on the side of the pipe body located in the second sealing cover.

[0014] Preferably, a first sealing cover is provided outside the output end of the oil cylinder. The first sealing cover is fixedly connected to the support plate. A second sealing valve, a second water pipe, a second water pump and a second water storage bucket are provided on one side of the first sealing cover. The output end of the oil cylinder is fixedly connected to the first joint.

[0015] Preferably, the first joint and the second joint are circular structures, the diameters of the first joint and the second joint are equal to the diameter of the tube blank, and rubber rings are provided on the first joint and the second joint.

[0016] Preferably, the first joint is detachably connected to the output end of the oil cylinder, and the second joint is detachably connected to the tube body.

[0017] Preferably, both the positioning module and the auxiliary module are circular structures, and the diameter of the auxiliary module is larger than the diameter of the positioning module.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The device is firmly fixed. The pressing unit is used to fix the processing module to prevent the processing module from moving. It has a good sealing effect. The pressurizing device is used to ensure the sealing effect at both ends of the tube blank. With the continuous pressurization of the oil cylinder, the integrated forming effect is good. The corrugation height and spacing are adjustable. By adjusting the disassembly disc of the positioning module, the corrugation height can be adjusted. By increasing or decreasing the auxiliary module, the spacing between the corrugations can be adjusted to ensure integrated forming and successful extrusion at one time. The diameter of the auxiliary module is larger than the diameter of the positioning module. The auxiliary module plays a limiting role in the device, which can reduce the contact between the positioning module and the fixing rod, ensure that the positioning module always remains stable during the positioning process, and avoid external interference. The overall structure of the device is simple and compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure provided by some embodiments of the present application;

[0021] Figure 2 is Figure 1 the front view of

[0022] Figure 3 is a schematic diagram of a partial structure of the present application;

[0023] Figure 4 is Figure 3 the front view of

[0024] Figure 5 is Figure 4 the sectional view taken along A-A in

[0025] Figure 6 is Figure 5 the enlarged view of the structure at B in

[0026] Figure 7 is a schematic diagram of the structure of the positioning module;

[0027] Figure 8 is the front view of the positioning module;

[0028] Figure 9 It is a schematic diagram of the combination of the positioning module and the auxiliary module.

[0029] Icons: 1. Fixed base; 101. Support plate; 102. Connecting rod; 103. Pressing unit; 104. Rotating handle; 105. Lifting screw; 106. Pressing rod; 107. Fixed rod; 2. Pressing device; 201. Oil cylinder; 202. Telescopic end; 203. Fixed end; 204. First sealing cover; 205. First joint; 206. Second sealing cover; 207. Second joint; 3. Processing module; 301. Tube blank; 302. Positioning module; 303. Auxiliary module; 304. Disk body; 305. Demounting disk; 3051. Left demounting disk; 3052. Right demounting disk; 306. First opening; 307. Second opening; 4. First sealing valve. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the detailed implementation manners. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0031] Compared with the embodiments shown in the drawings, the feasible implementation solutions within the scope of protection of the present application may have fewer components, have other components not shown in the drawings, different components, differently arranged components or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0032] A corrugated pipe integrated hydraulic forming machine proposed in an embodiment of the present application, see attached Figure 1 and attached Figure 2 , includes:

[0033] Fixed base 1, the fixed base 1 includes a support plate 101, a connecting rod 102 and a pressing unit 103. The support plates 101 are fixedly connected by the connecting rod 102. The pressing unit 103 includes a rotating handle 104, a lifting screw 105, a lifting block, a pressing rod 106 and a fixing rod 107. Among them, the rotating handle 104 is fixedly connected to the lifting screw 105, the lifting block is threadedly connected to the lifting screw 105, and both ends of the pressing rod 106 are fixedly connected to the lifting block. Among them, in some embodiments of the present application, the connecting rod 102 and the support plate 101 are fixedly connected by means of screws and nuts to ensure the overall stability of the fixed base 1. The number of connecting rods 102 is 2. The pressing unit 103 is a set of pressing structures designed in the vertical direction. By rotating the rotating handle 104, the lifting block on the lifting screw 105 can move up and down with the lifting screw 105, thereby driving the up and down movement of the pressing rod 106. The fixing rod 107 is a fixed design, and the fixing rod 107 is used to support the processing module 3. When the pressing rod 106 moves down, the processing module 3 is clamped and fixed.

[0034] Pressing device 2, see attached Figure 3 attachment Figure 4 attachment Figure 5 attachment Figure 6 , the fixed end 203 includes a second sealing cover 206 and a second joint 207. Among them, the oil cylinder 201 is the power source, and the output end of the oil cylinder 201 drives the telescopic end 202 to move, thereby shortening the distance between the first joint 205 and the second joint 207 for pressing operation. When the present application is in use, the pipe blank 301 is placed between the first joint 205 and the second joint 207, and by driving the oil cylinder 201 to move, the inside of the pipe blank 301 is pressurized.

[0035] Processing module 3, the processing module 3 includes a tube blank 301, a sealing block, a positioning module 302 and an auxiliary module 303. The sealing block is installed on both sides of the tube blank 301. The tube blank 301 is a hollow cylinder structure. The positioning module 302 includes a disc body 304 and a disassembly disc 305. Both the disc body 304 and the disassembly disc 305 are circular structures. A groove is provided at the center of the disc body 304. A first opening 306 is provided on the side of the disc body 304 away from the groove. The groove and the first opening 306 are concentrically arranged. The disassembly disc 305 is placed in the groove. The outer diameter of the disassembly disc 305 is equal to the diameter of the groove. A second opening 307 is provided in the disassembly disc 305. A third opening is provided at the center of the auxiliary module 303. The diameter of the third opening is equal to the diameter of the first opening 306 and equal to the diameter of the tube blank 301. Among them, the sealing block is installed inside the tube blank 301 for sealing the inside of the tube blank 301 and contacting the first joint 205 and the second joint 207. The positioning module 302 is used for corrugated forming. The auxiliary module 303 is used for the overall fixation of the processing module 3 and, through cooperation with the positioning module 302, realizes the control of the corrugated forming position.

[0036] Specifically, referring to the attached Figure 7 , Figure 8 , the positioning module 302 passes through the first opening 306 at the disc body 304. The first opening 306 is used to cooperate with the outer wall of the tube blank 301. A groove is provided at the center of the disc body 304. The groove provides a pressurized space for corrugated forming. The disassembly disc 305 is detachably installed in the groove. The disassembly disc 305 is used to control the height of corrugated forming to meet the requirements of different corrugated patterns. At the same time, the disassembly disc 305 is convenient for disassembly, and it is more convenient to disassemble after integral forming. Further, in order to better control the height of corrugated forming, a disassembly disc 305 is provided in the groove. By adjusting the size of the second opening 307 of the disassembly disc 305, the control of the height of corrugated forming can be better realized.

[0037] Among them, the positioning module 302 and the auxiliary module 303 are arranged at intervals on the outside of the tube blank 301. The function of the auxiliary module 303 is to fix the processing module 3 and separate the positioning modules 302. During use, referring to the attached Figure 9 , a number of adjacent positioning modules 302 are arranged and combined together in sequence. According to the distance requirement between the corrugations of the corrugated pipe, the auxiliary module 303 is inserted between the positioning modules 302.

[0038] Specifically, the first sealing cover 204 and the second sealing cover 206 are hermetically connected to the processing module 3. In this application, the inside of the tube blank 301 is pressurized by a pressurizing method. Therefore, the functions of the first sealing cover 204 and the second sealing cover 206 are to seal both ends of the tube blank 301, and at the same time, use the first joint 205 and the second joint 207 to realize the extrusion of the sealing block, thereby realizing the purpose of hydraulic forming.

[0039] In some possible embodiments, the number of connecting rods 102 is not limited to two, and multiple connecting rods can be used to ensure the stability of the fixed base 1. As a further improvement, the fixing rod 107 is not fixedly installed. The fixing rod 107 is respectively matched with the lifting screw 105 and the lifting block, and both ends of the fixing rod 107 are also fixedly connected to the lifting block. By rotating the rotating handle 104, the three fixing rods 107 can be adjusted. The advantage of this is that the fixing of the processing module 3 is more flexible and can meet the fixing requirements of different thicknesses of pipe blanks 301. In this way, the cross-section of the support plate 101 can be designed as a hexagonal structure, and the lifting screws 105 are arranged around the support plate 101 at an angle of 120° to each other with the center point of the support plate 101 as the reference.

[0040] Specifically, referring to the appendix Figure 7 , Figure 8 , the diameter of the second opening 307 is larger than the diameter of the first opening 306, and the height of the disassembly disc 305 is equal to the height of the groove. The diameter of the second opening 307 is larger than that of the first opening 306. In this way, when the pipe blank 301 passes through the first opening 306, there is still a certain space between the inner diameter of the second opening 307 and the outer wall of the pipe blank 301 for corrugation forming. The size of the second opening 307 determines the height of the corrugation forming. The difference in radius between the second opening 307 and the first opening 306 is equal to the corrugation height. Therefore, in actual use, the user can freely select the disassembly disc 305 with an appropriate opening size according to the corrugation forming height to determine the height of the formed corrugation, which is convenient to use.

[0041] Specifically, the disassembly disc 305 is divided into a left disassembly disc 3051 and a right disassembly disc 3052. The structures of the left disassembly disc 3051 and the right disassembly disc 3052 are more convenient for later disassembly. At the same time, the flexibility of the device for adjusting the corrugation height is improved, which is convenient for installation and adjustment.

[0042] In some possible embodiments, the diameter of the second opening 307 is smaller than the diameter of the first opening 306, and the height of the disassembly disc 305 is smaller than the height of the groove. When the processing module 3 is actually used, it can be flexibly adjusted according to the required corrugation shape and freely adjusted according to the actual production needs.

[0043] It can be understood that referring to Figure 6, one side of the support plate 101 is provided with an opening. The fixed end 203 further includes a pipe body, which is fixedly connected to the opening. The pipe body extends into the second sealing cover 206, and the end of the pipe body is fixedly connected to the second joint 207. On the side of the pipe body away from the second joint 207, there are a first sealing valve 4, a first water pipe, a first water pump, and a first water storage bucket. The first water pipe is sequentially connected to the first sealing valve 4, the first water pump, and the first water storage bucket. The pipe body is provided with a water inlet on the side of the second sealing cover 206. Among them, the water inlet can enable water to enter the second sealing cover 206 from the water pipe, pressurize the water inlet, and ensure the sealing performance on the left side of the pipe blank 301. Among them, the lengths of the second sealing cover 206 and the second joint 207 are fixed, and the length of the pipe blank 301 extending into the second sealing cover 206 is fixed. This application needs to ensure the sealing performance of pressurization. Water is injected into the second sealing cover 206 through a water pump. After the second sealing cover 206 is fixed in the processing module 3, it is hermetically connected to the surface of the disc body 304, which can be a fixed connection of screws and nuts, with the main goal of realizing the sealing performance of the second sealing cover 206. Further, a first sealing cover 204 is provided outside the output end of the oil cylinder 201. The first sealing cover 204 is fixedly connected to the support plate 101. On one side of the first sealing cover 204, there are a second sealing valve, a second water pipe, a second water pump, and a second water storage bucket. The output end of the oil cylinder 201 is fixedly connected to the first joint 205. The first sealing cover 204 also adopts the method of injecting water to improve its sealing performance. Threaded holes are provided on the side of the auxiliary module 303 close to the first sealing cover 204 and the second sealing cover 206, and fixed connections are made through connecting flanges to improve the sealing performance between each other. When the oil cylinder 201 drives the first joint 205 to pressurize, the overall sealing effect of the processing module 3 is good.

[0044] In some possible embodiments, the auxiliary module 303 may not be provided. Specifically, the disassembly disc 305 is divided into a left disassembly disc 3051 and a right disassembly disc 3052. The diameter of the second opening 307 formed between the left disassembly disc 3051 and the right disassembly disc 3052 is equal to the diameter of the first opening 306. Therefore, when the processing module 3 is in use, the size of the second opening 307 in the disassembly disc 305 can be adjusted to meet the use requirements of the processing module 3, and only the disassembly disc 305 needs to be assembled appropriately.

[0045] Specifically, the first joint 205 and the second joint 207 are circular structures. The diameters of the first joint 205 and the second joint 207 are equal to the diameter of the pipe blank 301. The first joint 205 is detachably connected to the output end of the oil cylinder 201, and the second joint 207 is detachably connected to the pipe body. Rubber rings are provided on the first joint 205 and the second joint 207. The detachable connection of the first joint 205 and the second joint 207 can be flexibly adjusted according to the diameter of the pipe blank 301 during use, improving the overall sealing performance of the processing module 3 and making it more flexible to use.

[0046] Among them, both the positioning module 302 and the auxiliary module 303 are circular structures, and the diameter of the auxiliary module 303 is greater than that of the positioning module 302. The auxiliary module 303 plays a limiting function in the device, which can reduce the contact between the positioning module 302 and the fixed rod 107, ensure that the positioning module 302 always remains stable during the positioning process, and avoid the interference of external forces.

[0047] When this application is in use, first adjust the height. By rotating the handle 104, raise the position of the pressing rod 106. Replace the first joint 205 and the second joint 207 according to the diameter of the tube blank 301, and install the auxiliary module 303 at the first joint 205 and the second joint 207 through the connecting flange. Install the positioning module 302 and the auxiliary module 303 on the outer periphery of the tube blank 301 as required. After installing the sealing block, fit one end of the tube blank 301 with the first joint 205 and the first sealing cover 204, and fit the other end of the tube blank 301 with the second joint 207 and the second sealing cover 206 for fixation. Rotate the handle 104 to press down the pressing rod 106 to make it closely cooperate with the processing module 3. After fixation, open the water pumps at both ends to inject water and pressurize into the first sealing cover 204 and the second sealing cover 206. Open the oil cylinder 201, and the output end of the oil cylinder 201 drives the first joint 205 to continuously squeeze for a hydraulic forming operation. After the forming is completed, close the water pumps and the oil cylinder 201, and shake the pressing rod 106 upward to disassemble the tube blank 301.

[0048] The above is only the preferred embodiment of this application and is not used to limit this application. For those skilled in the art, this application can have various changes and modifications, which all fall within the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A corrugated pipe integrated hydraulic forming machine, comprising a fixed base (1), a pressurizing device (2) and a processing module (3), characterized in that, The fixed base (1) includes a support plate (101), a connecting rod (102), and a pressing unit (103). The support plates (101) are fixedly connected by the connecting rod (102). The pressing unit (103) is used to clamp the processing module (3). The pressurizing device (2) includes an oil cylinder (201), a telescopic end (202), and a fixed end (203). The processing module (3) includes a tube blank (301), a sealing block, a positioning module (302), and an auxiliary module (303). The telescopic end (202) and the fixed end (203) are arranged at both ends of the tube blank (301). The sealing block is installed on both sides of the tube blank (301). The tube blank (301) is a hollow cylinder structure. The positioning module (302) includes a disk body (304) and a disassembly disk (305). Both the disk body (304) and the disassembly disk (305) are circular structures. A groove is provided at the center of the disk body (304). A first opening (306) is provided on one side of the disk body (304) away from the groove. The groove and the first opening (306) are concentrically arranged. The disassembly disk (305) is placed in the groove. The outer diameter of the disassembly disk (305) is equal to the diameter of the groove. A second opening (307) is provided in the disassembly disk (305). A third opening is provided at the center of the auxiliary module (303). The diameter of the third opening is equal to the diameter of the first opening (306) and equal to the diameter of the tube blank (301). Among them, the positioning module (302) and the auxiliary module (303) are arranged at intervals on the outer side of the tube blank (301). The pressing unit (103) includes a rotary handle (104), a lifting screw rod (105), a lifting block, a pressing rod (106), and a fixed rod (107). The rotary handle (104) is fixedly connected to the lifting screw rod (105). The lifting block is threadedly connected to the lifting screw rod (105). Both ends of the pressing rod (106) are fixedly connected to the lifting block. The fixed rod (107) cooperates with the lifting screw rod (105) and the lifting block respectively. Both ends of the fixed rod (107) are also fixedly connected to the lifting block. By rotating the rotary handle (104), the three fixed rods (107) can be adjusted. Both the positioning module (302) and the auxiliary module (303) are circular structures. The diameter of the auxiliary module (303) is larger than the diameter of the positioning module (302).

2. The one-piece hydraulic forming machine for corrugated pipes according to claim 1, wherein The telescopic end (202) includes a first sealing cover (204) and a first joint (205). The output end of the oil cylinder (201) is fixedly connected to the first joint (205). The fixed end (203) includes a second sealing cover (206) and a second joint (207). The first sealing cover (204) and the second sealing cover (206) are in sealed connection with the processing module (3).

3. A corrugated pipe integrated hydraulic forming machine according to claim 1, characterized in that, The diameter of the second opening (307) is larger than the diameter of the first opening (306). The height of the disassembly disk (305) is equal to the height of the groove.

4. A corrugated pipe integrated hydraulic forming machine according to claim 1, characterized in that, The disassembly disk (305) is divided into a left disassembly disk (3051) and a right disassembly disk (3052).

5. A bellows integrated hydraulic forming machine according to claim 2, characterized in that, One side of the support plate (101) is provided with an opening. The fixed end (203) further includes a pipe body, which is fixedly connected to the opening. The pipe body extends into the second sealing cover (206), and the end of the pipe body is fixedly connected to the second joint (207). A first sealing valve (4), a first water pipe, a first water pump and a first water storage bucket are arranged on one side of the pipe body away from the second joint (207). The first water pipe is sequentially connected to the first sealing valve (4), the first water pump and the first water storage bucket. The pipe body is provided with a water inlet on one side of the second sealing cover (206).

6. The one-piece hydraulic forming machine for corrugated pipes according to claim 5, characterized in that, A first sealing cover (204) is arranged outside the output end of the oil cylinder (201). The first sealing cover (204) is fixedly connected to the support plate (101). A second sealing valve, a second water pipe, a second water pump and a second water storage bucket are arranged on one side of the first sealing cover (204). The output end of the oil cylinder (201) is fixedly connected to the first joint (205).

7. A corrugated pipe integrated hydraulic forming machine according to claim 2, characterized in that, The first joint (205) and the second joint (207) are circular structures. The diameters of the first joint (205) and the second joint (207) are equal to the diameter of the pipe blank (301). Rubber rings are arranged on the first joint (205) and the second joint (207).

8. A corrugated pipe integrated hydraulic forming machine according to claim 2, characterized in that, The first joint (205) is detachably connected to the output end of the oil cylinder (201), and the second joint (207) is detachably connected to the pipe body.

Images