CN112388941A - Manufacturing equipment and manufacturing method of inspection well - Google Patents
Manufacturing equipment and manufacturing method of inspection well Download PDFInfo
- Publication number
- CN112388941A CN112388941A CN202011138594.4A CN202011138594A CN112388941A CN 112388941 A CN112388941 A CN 112388941A CN 202011138594 A CN202011138594 A CN 202011138594A CN 112388941 A CN112388941 A CN 112388941A
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- Prior art keywords
- bottom cover
- manufacturing
- inspection well
- disc
- rotary table
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/002—Combinations of extrusion moulding with other shaping operations combined with surface shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/16—Straightening or flattening
- B29C53/18—Straightening or flattening of plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/84—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
- B29C59/043—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for profiled articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
Abstract
The invention relates to the technical field of municipal construction devices, in particular to design of processing and manufacturing equipment of an inspection well. The invention is realized by the following technical scheme: the manufacturing equipment of the inspection well comprises a bottom cover manufacturing device and a body conveying device, wherein the bottom cover manufacturing device comprises a discharging device, and the bottom cover manufacturing device also comprises a rotary table, a rotary table driving device, a sliding rail, a moving table and a moving table driving device, wherein the rotary table is positioned below the extrusion port and used for bearing materials, the rotary table driving device is used for driving the rotary table to rotate, the moving table is connected with the rotary table, and the moving table driving device is used for driving the moving table to move on the sliding rail; the body transporting device is used for transporting the body to a position above the turntable. The invention aims to provide manufacturing equipment and a manufacturing method of an inspection well, which have the advantages of high automation degree, low labor intensity of workers, controllable material positioning in the bottom cover forming process, good forming effect, convenient and quick combination of the bottom cover and a main body, simplified working procedures and improved efficiency.
Description
Technical Field
The invention relates to the technical field of municipal construction devices, in particular to design of processing and manufacturing equipment of an inspection well.
Background
At present, with the continuous improvement of the urbanization level in China, the management of corresponding drainage systems and facilities is more and more emphasized by people. Drainage pipes and manholes are common components in drainage systems. The inspection well is mainly used in building districts, such as residential areas, public building areas, plant areas and the like, is generally arranged at the junction of drainage pipelines, turning positions, pipe diameter or gradient changing positions, water falling positions and the like, and is a well-shaped structure for facilitating periodic inspection, cleaning and dredging or well descending operation inspection.
For example, chinese patent publication No. CN201920248328.3 discloses an inspection well, which is made of polyethylene, and needs to be welded when being connected to a pipeline. The inspection well comprises a main body part and a bottom cover connected with the main body part, and defects exist in the manufacturing process of the bottom cover in the prior art. On one hand, the labor intensity of workers is high, the position of the spread polyethylene material is not accurate, and the integral formability of the bottom cover is not strong. On the other hand, the polyethylene material becomes the bottom cover after the shaping, and the process of bottom cover and inspection shaft body seam is not smooth enough, and the error rate is high.
Disclosure of Invention
The invention aims to provide manufacturing equipment and a manufacturing method of an inspection well, which have the advantages of high automation degree, low labor intensity of workers, controllable material positioning in the bottom cover forming process, good forming effect, convenient and quick combination of the bottom cover and a main body, simplified working procedures and improved efficiency.
The technical purpose of the invention is realized by the following technical scheme: the manufacturing equipment of the inspection well comprises a bottom cover manufacturing device and a body conveying device, wherein the bottom cover manufacturing device comprises a discharging device, the discharging device comprises an extruding device used for extruding materials, the extruding device comprises an extruding port, the bottom cover manufacturing device further comprises a rotary table, a rotary table driving device used for driving the rotary table to rotate, a sliding rail, a moving table connected with the rotary table and a moving table driving device used for driving the moving table to move on the sliding rail, and the rotary table driving device is positioned below the extruding port and used for bearing the materials; the body transporting device is used for transporting the body to a position above the turntable.
Preferably, the body transportation device comprises a high-altitude guide rail, a suspension rope connected with the high-altitude guide rail and a hook connected with the suspension rope.
Preferably, the bottom cover manufacturing device further comprises a shaping device for shaping flatness of the materials on the rotary table, and the shaping device comprises a connecting frame, a connecting shaft connected with the connecting frame and a pressing head mounted on the connecting shaft.
Preferably, the pressing head comprises a plurality of flat pressing single wheels, the flat pressing single wheels are connected to the connecting shaft together, and the connecting shaft is located on the axis of the flat pressing single wheels.
Preferably, the shaping device further comprises a rotating shaft, and the bottom cover manufacturing equipment further comprises a downward pressing driving device for driving the connecting frame and the pressing head to rotate and press downward by taking the rotating shaft as a shaft.
Preferably, the bottom cover manufacturing device further comprises a cutting knife for cutting off the material at the position of the extrusion port, and the bottom cover manufacturing device further comprises a heating device for heating the rotary disc.
A manufacturing method of an inspection well comprises the following steps:
s01, a manufacturing step of a bottom cover of the inspection well,
s02, connecting the main body with the bottom cover;
wherein, S01 includes the following steps:
s011, a preparation step,
rotating the turntable; the height of a pressure head in the shaping device relative to the rotary disc is adjusted;
s012, a discharging step,
the materials are put into a material box, extruded out from an extrusion port on an extrusion device and fall into a turntable;
s013, a step of flattening into a disc,
the materials on the rotary disc rotate along with the rotary disc and are pressed and flattened by the pressure head, and the materials are in a disc shape on the rotary disc to form a bottom cover;
s02 includes the steps of:
s021, a hooking and moving step,
the hook hooks the inspection well main body, slides on the high-altitude guide rail and finally moves to the position above the turntable;
s022, a step of pressing down,
the material on the turntable is heated and the hook descends to press the main body directly down onto the bottom cover 9 which is fully heated.
In a preferred aspect of the present invention, the S013 flattening disc forming step further includes a disc diameter adjusting step:
and the user adjusts the relative position of the disc center of the rotating disc and the extrusion port in the horizontal direction, so as to adjust the disc diameter size of the final bottom cover molding.
Preferably, in the disc diameter adjusting step, the bottom cover is formed from outside to inside, that is, the relative distance between the center of the rotary disc and the extrusion opening in the horizontal direction gradually decreases.
Preferably, after the step of flattening into a disc, the method further comprises:
cutting and striking;
the extrusion port is stopped to continue discharging, the cutting knife is used for cutting the material from the extrusion port to form a material head, the pressure head is vertically hit to strike the material head falling on the turntable, and the material head is evenly and solidly tiled.
In conclusion, the invention has the following beneficial effects:
1. through body conveyer, directly push down the main part on the bottom by the abundant heating, bottom and main part are direct to be cohered and form, and are high-efficient convenient.
2. Through set up rotatory carousel and slidable mobile station in extrusion device below, not only make the fashioned position of material accurate controllable, and can be used for producing the bottom of preparation equidimension not by same equipment.
3. Due to the flat design of the extrusion port, the bottom cover is good in forming effect.
4. The shaping device performs flat pressing operation on the material, so that the forming height of the bottom cover is controllable.
5. The pressure head adopts the driven design of many rounds, not only makes the material flatten more evenly, and the bottom after the shaping possess the ripple outward appearance.
6. After the cutting knife cut the material, more material can receive lasting the patting of pressure head for this part material is still tight real even.
7. Be equipped with heating device on the carousel for the bottom keeps suitable temperature in process of production, the later stage of also being convenient for and inspection shaft main part's be connected.
Drawings
FIG. 1 is a schematic diagram of example 1;
fig. 2 is a schematic view at an extrusion device and a shaping device.
In the figure: 1. the device comprises a moving table, 11, a supporting frame, 12, pulleys, 2, a sliding rail, 3, a rotary table, 4, a discharging device, 41, a material box, 42, an extruding device, 421, an extruding opening, 5, a shaping device, 51, a rotating shaft, 52, a connecting frame, 521, an avoiding space, 53, a pressure head, 531, a flat pressing single wheel, 54, a connecting shaft, 6, a body conveying device, 61, a high-altitude guide rail, 62, a hanging rope, 63, a hook, 9 and a bottom cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1, as shown in fig. 1, a manufacturing apparatus and a manufacturing method of an inspection well, the manufacturing apparatus of the whole inspection well includes two parts, a bottom cover manufacturing device and a body transporting device 6, which are respectively at the left part and the right part of the drawing of fig. 1.
The bottom cover making device comprises a discharge device 4, the discharge device 4 comprises a bin 41 and an extrusion device 42, and the material for making the bottom cover, such as polyethylene, is placed in the bin 41 and extruded through the extrusion device 42. The parts of the feed box 41 and the extrusion device 42 are prior art, and the present solution does not modify these two parts, and will not be described herein.
The bottom cover making device further comprises a turntable 3, and the turntable 3 rotates under the driving of a turntable driving device such as a motor in the prior art. In this embodiment, a slide rail 2 is laid on the ground, and a turntable 3 is attached to a mobile station 1. The mobile station 1 includes a support frame 11 and a pulley 12, and the mobile station 1 slides on the slide rail 2 by a mobile station driving device such as a servo motor in the related art. The moving speed, the moving distance and the moving track of the mobile station 1 can be accurately operated through the automatic numerical control in the prior art. This makes the position of the bottom cover falling from the extrusion port 421 into the rotary table 3 adjustable, and the bottom cover with different diameters can be manufactured by moving the moving table 1.
In the present technical solution, the manufacturing method of the inspection well mainly includes two steps, which are S01, an inspection well bottom cover manufacturing step and S02, and a main body and bottom cover connecting step.
In the inspection bottom hole cover manufacturing step S01, S011 is the first step of preparation. At this time, the rotating disc 3 starts to rotate; the height of the ram 53 in the truing device 5 relative to the turntable 3 is adjusted.
Subsequently, S012, a discharging step. As shown in fig. 2, the extruding device 42 includes an extruding opening 421, in this embodiment, the extruding opening 421 is a long strip-shaped opening, and the material is extruded to form a flat belt.
S013, a step of flattening into a disc,
the shaping device 5 is installed below the extruding device 42, the main part of the shaping device is a connecting frame 52 which is in a frame type design structure, and an avoiding space 521 exists in the connecting frame 52 aiming at the material extruding position. The avoiding space 521 avoids contacting with the high-temperature material coming out of the extrusion port 421, so that the material can smoothly fall down onto the rotary table 3.
The extrusion opening 421 is stationary with respect to the ground, so that the material falls on the rotating disc 3.
When the material falls into carousel 3 for the first time, often possess certain height, level and smooth inadequately. In this embodiment, the shaping device 5 is used for flattening the material. As shown in fig. 2, a pressing head 53 is provided at the front end of the connection frame 52. The user adjusts the height of the pressing head 53 from the turntable 3 in advance, and the pressing head 53 performs the flattening and smearing operation on the material on the turntable 3 under the rotation of the turntable 3. Further, the pressing head 53 includes a plurality of flat pressing single wheels 531 connected to the connecting shaft 54, each adjacent flat pressing single wheel 531 may rotate with respect to the connecting shaft 54, and a small gap may exist between the adjacent flat pressing single wheels 531. On one hand, the flattening effect is more uniform and smooth due to the design, and on the other hand, the finally formed bottom cover has ripples.
In this step, a disc diameter adjusting step is also included.
In actual production, the bottom cover is of a disc shape, and the diameters of the discs are different according to different product specifications. In this embodiment, the same extrusion ports 421 may be used to produce bottom caps of different specifications. Therefore, the model of the extrusion port 421 does not need to be replaced when meeting different production requirements, the production efficiency is increased, and the maintenance cost of the equipment is reduced.
In this embodiment, the process flow of bottom cover is from outer gradually to interior, namely through the removal of mobile station 1 for extrude the horizontal distance taper of mouthful 421 and the centre of a circle position of carousel 3, when the preparation is ended soon, utilize the cutting knife will extrude the material of mouthful 421 departments to cut, and stop the ejection of compact. At this time, the large amount of the material falls into the center of the bottom cover. At this time, the shaping device 5 performs a pressing and striking operation on the portion of the material.
Specifically, as shown in fig. 2, the connecting frame 52 is connected to the rotating shaft 51, and when the connecting frame 52 is driven by a downward driving device such as an air cylinder (not shown in the figure) to rotate upward and downward about the rotating shaft 51, the ram 53 performs a beating operation on a large amount of the material. Because the material of the part is a little more than the material in the common falling stage, the beating action can enable the material of the part to become flat and uniform in the central position, and finally the forming effect of the bottom cover is achieved. The bottom cover 9 in fig. 1 is the final molded product.
During the process of manufacturing the bottom cover 9, the temperature of the bottom cover 9 needs to be controlled. The specific form of the heating device is not limited, and open fire heating or electric heating in the prior art can be adopted. The heating device is used for heating the rotary table 3, so that the bottom cover 9 has a proper processing temperature in the manufacturing process, and the subsequent connection of the bottom cover 9 and the inspection well body is facilitated.
Thus, the entire bottom cover 9 is completed. Entering a second main step: and S02, connecting the main body with the bottom cover.
The body transportation device 6 comprises an overhead guide rail 61, and the overhead guide rail 61 is erected in the air of a workshop. The suspension cords 62 may slide along the overhead rail 61 by means of a pulley or the like, as is common in the art. The hanging rope 62 is connected with a hook 63, and the hook 63 ascends and descends under the action of the lengthening and retracting of the hanging rope.
First, S021, a hooking moving step,
at this time, the inspection well main body is manufactured, the manufacturing link of the main body part is the same as that of the prior art, and the detailed description is omitted in the scheme. The hook 63 hooks the manufactured inspection well main body, slides on the high-altitude guide rail 61 and finally moves to the upper part of the turntable 3;
s022, a step of pressing down,
at this time, the main body of the inspection well and the bottom cover 9 are both just manufactured and are not sufficiently cooled. In particular the bottom cover 9, is still subjected to the heating effect of the heating means. The hook 63 descends to directly press the main body on the fully heated bottom cover 9, and the bottom cover 9 is directly adhered to the main body, so that the heating device is efficient and convenient.
Claims (10)
1. An inspection well manufacturing device is characterized in that: the bottom cover manufacturing device comprises a bottom cover manufacturing device and a body conveying device (6), wherein the bottom cover manufacturing device comprises a discharging device (4), the discharging device (4) comprises an extruding device (42) used for extruding materials, the extruding device (42) comprises an extruding opening (421), the bottom cover manufacturing device further comprises a rotary table (3) located below the extruding opening (421) and used for bearing the materials, a rotary table driving device used for driving the rotary table (3) to rotate, a sliding rail (2), a moving table (1) connected with the rotary table (3) and a moving table driving device used for driving the moving table (1) to move on the sliding rail (2); the body transporting device (6) is used for transporting the body to a position above the turntable (3).
2. An inspection well manufacturing apparatus according to claim 1, wherein: the body conveying device (6) comprises a high-altitude guide rail (61), a suspension rope (62) connected with the high-altitude guide rail (61), and a hook (63) connected with the suspension rope (62).
3. An inspection well manufacturing apparatus according to claim 1, wherein: the bottom cover manufacturing device further comprises a shaping device (5) used for carrying out flatness shaping on materials on the rotary table (3), and the shaping device (5) comprises a connecting frame (52), a connecting shaft (54) connected with the connecting frame (52) and a pressing head (53) installed on the connecting shaft (54).
4. An inspection well manufacturing apparatus according to claim 3, wherein: the pressure head (53) comprises a plurality of flat pressing single wheels (531), the flat pressing single wheels (531) are connected to the connecting shaft (54) together, and the connecting shaft (54) is located on the axis of the flat pressing single wheels (531).
5. An inspection well manufacturing apparatus according to claim 3, wherein: the shaping device (5) further comprises a rotating shaft (51), and the bottom cover manufacturing equipment further comprises a downward pressing driving device for driving the connecting frame (52) and the pressing head (53) to rotate and press downward by taking the rotating shaft (51) as a shaft.
6. An inspection well fabrication apparatus as claimed in any one of claims 1 to 5, wherein: the bottom cover manufacturing device further comprises a cutting knife used for cutting off the material at the position of the extrusion port (421), and the bottom cover manufacturing device further comprises a heating device used for heating the rotary disc (3).
7. A method for manufacturing an inspection well is characterized by comprising the following steps: s01, manufacturing a bottom cover of the inspection well, S02, connecting the main body with the bottom cover; wherein, S01 includes the following steps: s011, a preparation step, namely rotating the turntable (3); the height of a pressure head (53) in the shaping device (5) relative to the rotary disc (3) is adjusted; s012, a discharging step, namely, putting the materials into a material box (41), extruding the materials from an extrusion port (421) on an extrusion device (42) and dropping the materials into a rotary disc (3); s013, a flattening and disc forming step, wherein materials on the rotary disc (3) rotate along with the rotary disc (3) and are pressed down by the pressing head (53) to be flattened, and the materials are in a disc shape on the rotary disc (3) to form a bottom cover (9); s02 includes the steps of: s021, a hooking and moving step, namely hooking the inspection well main body by a hook (63), sliding on the high-altitude guide rail (61), and finally moving to the position above the turntable (3); s022, a pressing step, heating the materials on the rotary disc (3), descending the hook (63), and directly pressing the main body on the fully heated bottom cover (9).
8. The method according to claim 7, wherein in the step of pressing S013 into a plate, the method further comprises a step of adjusting a plate diameter: the user adjusts the relative position of the disc center of the rotating disc (3) and the extrusion opening (421) in the horizontal direction, thereby adjusting the disc diameter size formed by the final bottom cover (9).
9. The manufacturing method of the inspection well according to claim 8, wherein in the disc diameter adjusting step, the forming track of the bottom cover (9) is formed from outside to inside, namely, the relative distance between the disc center of the rotating disc (3) and the extrusion port (421) in the horizontal direction is gradually reduced.
10. The method of claim 9, further comprising, after the step of S013 flattening into a disk: s014, cutting and striking; stopping to extrude mouthful (421) and continuing the ejection of compact, using the cutting knife to cut off the material from extruding mouthful (421) position, forming the stub bar, hitting the stub bar that drops on carousel (3) from top to bottom in pressure head (53), the tiling of realization stub bar is even and real.
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN200995478Y (en) * | 2006-12-21 | 2007-12-26 | 四川天鑫塑胶管业有限公司 | Inspection-well equipment of thermal-extruding and cold-pressing formative plastic |
CN202147398U (en) * | 2011-07-08 | 2012-02-22 | 四川江瀚工业股份有限公司 | Device for welding plastic inspection well soleplate |
CN107119719A (en) * | 2017-05-22 | 2017-09-01 | 包头市问号系统集成有限公司 | The rapid forming equipment of inspection shaft and the manufacture method of inspection shaft |
-
2020
- 2020-10-22 CN CN202011138594.4A patent/CN112388941B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN200995478Y (en) * | 2006-12-21 | 2007-12-26 | 四川天鑫塑胶管业有限公司 | Inspection-well equipment of thermal-extruding and cold-pressing formative plastic |
CN202147398U (en) * | 2011-07-08 | 2012-02-22 | 四川江瀚工业股份有限公司 | Device for welding plastic inspection well soleplate |
CN107119719A (en) * | 2017-05-22 | 2017-09-01 | 包头市问号系统集成有限公司 | The rapid forming equipment of inspection shaft and the manufacture method of inspection shaft |
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