CN115971320A - Forming process and device for valve body of Venturi valve - Google Patents

Abstract

The invention relates to the technical field of manufacturing of Venturi valves, and particularly discloses a Venturi valve body forming process and a Venturi valve body forming device, wherein the process comprises the following steps: blanking according to the expansion length of the diameter of the minimum position of the caliber of the valve body and the expansion length of the axial direction of the valve body, and welding into a cylindrical pipe blank; placing the cylindrical pipe blank in a mold, and closing the mold; injecting hydraulic oil into the cylindrical pipe blank until the outer wall of the cylindrical pipe blank is tightly attached to the inner wall of the mold; and after the cylindrical pipe blank in the die is formed, controlling a hydraulic forming system to release pressure, opening the die after hydraulic oil is discharged, and taking out the formed valve body of the venturi valve. In the invention, the processing precision is comprehensively improved through a brand-new forming process, the product precision which can be realized by the traditional process is completely subverted, and the control precision of the valve body manufactured by adopting the novel process provided by the invention meets the requirement of a high-end product on the premise that other parts are completely the same, so that the valve body is in the world leading position.

Description

A Venturi valve body forming process and forming device

technical field

The invention relates to a valve body forming process, in particular to a Venturi valve body forming process and a forming device, belonging to the technical field of Venturi valve manufacturing.

Background technique

Venturi airflow control valves combine a mechanical pressure independent regulator with a high speed airflow controller to extend airflow control to the highest level. Through the aerodynamic design, the valve has quiet working performance, and the quick-response automatic pressure balance device provides reliable control of fume hood dust collection and indoor pressure. The Venturi valve has the characteristics of not being affected by changes in air duct pressure, quick response, and precise adjustment. However, the equipment is relatively expensive, and it is suitable for use in certain biological product production plants that require negative pressure control, toxic and harmful, chemical laboratories, and biosafety laboratories.

Internationally, there are two traditional forming methods for this workpiece: segmented splicing, and curved segments formed by spinning. After being rolled into a tube, it is cut into two along the center line, stamped and formed separately, and then welded together. The disadvantages of these two methods are: after the curve section is formed by spinning, the dimensional accuracy is very low due to the rebound of the metal material (diameter tolerance ≥ 0.3), and the roundness of each section is deformed after tailor welding, and the roundness cannot be guaranteed (roundness ≥0.2), and the coaxiality of the left, middle and right three sections is also very low (coaxiality at both ends ≥0.5); the middle split stamping forming method has low roundness and dimension accuracy due to the welding of two longitudinal welds ; The local material thickness reduction at the variable diameter of the two molding methods is very large (thickness reduction ≥ 0.3), which reduces the overall strength of the valve body.

Contents of the invention

The object of the present invention is to propose a venturi valve body molding process in order to solve the shortcomings in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A Venturi valve body molding process, the process includes the following steps:

Step 1: According to the developed length of the minimum diameter of the valve body and the developed length in the axial direction of the valve body, blanking is carried out and welded into a cylindrical tube blank;

Step 2: Place the cylindrical tube blank in the mold, close the mold, and use the sealing plug and the movable pressure oil nozzle to seal the two ends of the cylindrical tube blank;

Step 3: Use the hydraulic system to drive the hydraulic forming system, and inject hydraulic oil into the tubular tube blank until the outer wall of the tubular tube blank fits closely with the inner wall of the mold;

Step 4: While step 3 is being carried out, the automatic push system of the hydraulic press on the left drives the propulsion mechanism to move to the right in the guide sleeve of the hydraulic press, and at the same time pushes the movable pressure oil nozzle, locking process ring, and tubular tube to move to the right , to reduce the amount of wall thickness reduction during the forming process of the cylindrical tube blank;

Step 5: After the tubular tube blank in the mold is formed, control the hydraulic forming system to release the pressure to discharge the hydraulic oil in the tubular tube blank, open the mold, take out the formed Venturi valve body, and the forming process is completed.

Optionally, both ends of the mold are equipped with locking process rings, and the two locking process rings can respectively lock the pressure sealing plug and the movable pressure oil injection nozzle.

Optionally, an oil injection pipeline is provided inside the movable pressure oil injection nozzle, through which hydraulic oil enters the interior of the cylindrical tube blank.

A Venturi valve body molding device, which is applied to the above-mentioned molding process, and the device includes a processing table, the top of the processing table is equipped with a box through a plurality of support columns, and the top of the processing table is also The support column is connected with the bottom of the mold, the inside of the box is equipped with a first processing mechanism for sorting the tubular blanks, and the top of the processing table is also equipped with a cleaning and testing mechanism the second processing agency.

Optionally, the first processing mechanism includes a first swash plate, the first slant plate is installed inside the box body, and a second slant plate is also installed inside the box body below the first slant plate, and the second slant plate A first discharge port and a second discharge port are respectively opened near the high end and the low end, and a third discharge port is provided on the outer wall of the lower end of the box close to the second inclined plate.

Optionally, the inside of the box body is located below the second slanting plate, and the first rotating plate is installed in an inclined state through the rotating shaft, and the bottom of the first rotating plate is equidistantly provided with a plurality of through grooves. Risers are installed on both sides, and a rubber pad is bonded to the inner wall of one of the risers.

Optionally, the outer wall of the box body opposite to the third discharge port is provided with a fourth discharge port, and a second rotating plate is installed in the fourth discharge port, and the second rotating plate is close to the first rotating plate. A grinding belt is installed on one side of the plate, and a sealing door is also installed on the fourth feeding port below the second rotating plate.

Optionally, the second processing mechanism includes an electric slider, a chute is provided on the top of the processing table, the electric slider is installed inside the chute, a fixing plate is installed on the top of the electric slider, and the top of the fixing plate is close to the box A rotating block is installed on one side of the body, and a first electric telescopic rod is installed on the outer wall of the rotating block away from the fixed plate. A cleaning block is installed at one end of the box body, and the outer wall of the box close to the fixed plate is provided with an opening for the first electric telescopic rod to drive the cleaning block to move to the inside of the box body.

Optionally, a groove is provided on the outer wall of the cleaning block, and a second electric telescopic rod is installed in the groove, and an arc-shaped magnet block is installed on the extending end of the second electric telescopic rod, and a part of the cleaning block close to the round rod Two third electric telescopic rods are installed on the side outer wall, and the protruding ends of the two third electric telescopic rods are jointly connected with a moving block. The connecting end of the gas mechanism, and the outer wall of the moving block near the cleaning block is provided with a plurality of air outlets, the outer wall of the cleaning block near the moving block is equipped with an air bag, and a connecting pipe is installed between the air bag and the moving block.

Optionally, two fourth electric telescopic rods are installed inside the mold, and arc-shaped push plates are installed on the protruding ends of the two fourth electric telescopic rods, and the top of the processing table is close to the box body and the mold side Both are provided with two rectangular slots, and the bottom of the processing table is located directly under the two rectangular slots, and a collection box is slidably installed.

The beneficial effects of the present invention are:

1. In this invention, the overall improvement of machining accuracy is achieved through a new molding process, which completely subverts the product accuracy that can be achieved by traditional processes: the diameter tolerance of each curved surface is ≤0.05, the roundness of each diameter is ≤0.05, and the coaxiality of the two ports is ≤ 0.05, cylinder wall thickness reduction ≤ 0.1, reinforcing ribs can be added to any cylinder part, effectively improving the pressure resistance and deformation resistance of the valve body. Under the same premise, its control accuracy has reached the requirements of high-end products and is in the leading position in the world.

2. In this invention, before placing the welded tubular blank in the mold, it can be placed in the box first, and through the first and second discharge ports set on the second inclined plate, it can be The unqualified cylindrical tube blanks are removed, and the qualified cylindrical tube blanks will fall on the top of the first rotating plate, and the outer wall of the cylindrical tube blanks will be polished and cleaned by the grinding belt at the bottom of the second rotating plate to avoid The welding slag or other impurities on the outer wall of the tube blank fall into the mold together, which will affect the molding of the Venturi valve body.

3. In this invention, after the diameter-qualified cylindrical tube blank falls on the top of the first rotating plate, the second rotating plate can be rotated downward to squeeze the cylindrical tube blank falling on the top of the first rotating plate, so that A plurality of tubular blanks located on the top of the first rotating plate can be arranged neatly, so that after the external drive mechanism drives the first rotating plate to rotate in an inclined state, one end of the plurality of tubular blanks is all in contact with the rubber pad, thereby being able to The unqualified cylindrical tube blanks are rejected to realize the automatic processing of the cylindrical tube blanks before forming, thereby improving the qualified rate of the Venturi valve body.

4. In this invention, the plurality of tubular blanks neatly arranged on the top of the first rotating plate can drive the cleaning block into the interior of the tubular blank through the first electric telescopic rod, and clean the miscellaneous tube blanks on the inner wall of the tubular blank. and after the cleaning block enters the interior of the cylindrical tube blank, the two third electric telescopic rods can drive the moving block to move towards the direction close to the first electric telescopic rod on the outer wall of the round rod, so that the moving block has an air outlet One side of the outer wall is in contact with the tubular blank. At this time, the external gas transmission mechanism can be used to deliver gas to the moving block through the connecting end, so that the gas outlet can be exhausted to the inside of the cylindrical tube, and the airtightness of the cylindrical tube The accuracy of the inspection is carried out to avoid defects in the welding seam position, resulting in hydraulic oil leakage or deformation and damage of the tubular tube blank during the subsequent forming process.

Description of drawings

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the schematic diagram of a kind of Venturi valve body molding process that the present invention proposes;

Fig. 2 is the structural representation of a kind of Venturi valve valve body molding device that the present invention proposes;

Fig. 3 is a structural schematic diagram of another angle of Fig. 2;

Fig. 4 is the structural sectional view of casing among the present invention;

Fig. 5 is a structural schematic diagram of the first rotating plate in the present invention;

Fig. 6 is the structural sectional view of mold among the present invention;

Fig. 7 is the structural representation of the second processing mechanism in the present invention;

Fig. 8 is a schematic structural view of the cleaning block and the arc-shaped magnet block in the present invention.

In the figure: 1. Processing table; 2. Box body; 3. Mold; 4. Fixed plate; 5. The fourth feeding port; 6. Rectangular slot; 7. Collection box; Material opening; 10, opening; 11, the first rotating plate; 12, the first inclined plate; 13, the second inclined plate; 14, the first feeding port; 15, the second feeding port; 16, the second rotating plate ;17, grinding belt; 18, sealed door; 19, rubber pad; 20, through groove; 21, arc push plate; 22, the fourth electric telescopic rod; 23, electric slider; 24, the first electric telescopic rod; 25. Cleaning block; 26. Moving block; 27. Connecting end; 28. Air outlet; 29. The third electric telescopic rod; 30. Air bag; 31. Connecting pipe; 32. Arc magnet block; 33. The second electric telescopic Rod; 34. Hydraulic system; 35. Automatic propulsion system of hydraulic press; 36. Hydraulic forming system; 37. Guide sleeve of hydraulic press; 38. Propelling mechanism; 39. Movable pressure nozzle; 40. Locking process ring; 41. Tube blank; 42, sealing plug; 43, round rod.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Referring to Figure 1-Figure 8, a Venturi valve body forming process, the process includes the following steps:

Step 1: blanking according to the developed length of the smallest diameter of the valve body and the developed length in the axial direction of the valve body, and welding into a cylindrical tube blank 41;

Step 2: Place the cylindrical tube blank 41 in the mold 3, close the mold 3, and use the sealing plug 42 and the movable pressure oil nozzle 39 to seal the two ends of the cylindrical tube blank 41;

Step 3: Use the hydraulic system 34 to drive the hydraulic forming system 36, and inject hydraulic oil into the cylindrical tube blank 41 until the outer wall of the cylindrical tube blank 41 is closely attached to the inner wall of the mold 3;

Step 4: While step 3 is being carried out, the hydraulic press automatic push system 35 on the left drives the propulsion mechanism 38 to move to the right in the guide sleeve 37 of the hydraulic press, and at the same time pushes the movable pressure oil nozzle 39, the locking process ring 40, the tubular tube The blank 41 moves to the right to reduce the wall thickness reduction during the forming process of the cylindrical tube blank 41;

Step 5: After the tubular tube blank 41 in the mold 3 is formed, control the hydraulic forming system 36 to release the pressure so that the hydraulic oil in the tubular tube blank 41 is discharged, open the mold 3, and take out the formed Venturi valve body , the forming process is completed.

As a technical optimization solution of the present invention, both ends of the mold 3 are equipped with locking process rings 40, and the two locking process rings 40 can lock the sealing plug 42 and the movable pressure oil nozzle 39 respectively.

As a technical optimization solution of the present invention, an oil injection pipeline is provided inside the movable pressure oil injection nozzle 39 , and hydraulic oil enters the interior of the cylindrical tube blank 41 through the oil injection pipeline.

A Venturi valve body forming device, which is applied to the above-mentioned forming process, and the device includes a processing table 1, the top of the processing table 1 is equipped with a box body 2 through a plurality of support columns, and the processing table 1 The top is also connected to the bottom end of the mold 3 through the support column, the inside of the box body 2 is provided with a first processing mechanism for sorting the cylindrical tube blanks 41, and the top of the processing table 1 is also provided with a processing mechanism for sorting the cylindrical tube blanks. The second processing mechanism for cleaning and testing the inside of the blank 41.

As a technical optimization solution of the present invention, the first processing mechanism includes a first slant plate 12, the first slant plate 12 is installed inside the box body 2, and the inside of the box body 2 is also installed below the first slant plate 12 The second slant plate 13, the second slant plate 13 is respectively provided with a first discharge port 14 and a second discharge port 15 near the high end and the low end, and the outer wall of the box body 2 is opened near the low end of the second slant plate 13. There is a third feeding port 9. A plurality of tubular blanks 41 after welding can be placed in the box body 2 so that it slides down from the top of the first inclined plate 12 to the top of the second inclined plate 13, and among the plurality of tubular blanks 41 A small amount of tubular blanks 41 with a thinner diameter will fall downward when passing through the first discharge opening 14, those with a qualified diameter and thicker will pass through the first discharge opening 14, and the cylindrical blanks 41 with a qualified diameter will pass through the first discharge opening 14. After the top of the second inclined plate 13 continues to move to the position of the second discharge opening 15, it falls downwards. The thicker ones will still pass through the second discharge port 15 and be discharged from the third discharge port 9 to the outside of the box body 2 , so as to classify the thickness of the tubular blank 41 .

As a technical optimization solution of the present invention, the inside of the box body 2 is located below the second slant plate 13, and the first rotating plate 11 is installed in an inclined state through the rotating shaft, and the bottom of the first rotating plate 11 is equidistantly provided with a plurality of Both sides of the through slot 20 and the first rotating plate 11 are provided with risers, and a rubber pad 19 is bonded to the inner wall of one of the longer risers.

As a technical optimization scheme of the present invention, the outer wall of the box body 2 opposite to the third discharge port 9 is provided with a fourth discharge port 5, and a second rotating plate 16 is rotatably installed in the fourth discharge port 5. , and the side of the second rotating plate 16 close to the first rotating plate 11 is equipped with a grinding belt 17 , and the fourth feeding port 5 is located below the second rotating plate 16 and is also equipped with a sealed door 18 . When a plurality of cylindrical tube blanks 41 are moving on the top of the second swash plate 13, the second rotating plate 16 at this time can be driven to rotate upwards by an external drive mechanism, so that the end away from the rotating part is rotated upwards until it is aligned with the second rotating plate. After the position where the bottom of the inclined plate 13 abuts, the second rotating plate 16 at this time can be used as a guide plate to facilitate the thinner diameter tubular tube blank 41 falling downward from the first feeding port 14 to fall on the second rotating plate 16. The top of the rotating plate 16 is discharged from the casing 2, and the unqualified cylindrical tube blank 41 falling from the first discharge port 14 can be prevented from falling on the top of the first rotating plate 11; A rotating plate 11 is arranged at an inclination, and the cylindrical tube blank 41 falling on the top of the first rotating plate 11 will automatically move towards the lower end, and enough cylindrical tubes with qualified diameters are collected on the top of the first rotating plate 11 After the blanks 41, these cylindrical tube blanks 41 freely fall down to the top of the first rotating plate 11, some of the cylindrical tube blanks 41 will be in a stacked state, at this time, the second rotating plate can be driven by an external driving mechanism 16 is rotated downwards to the state that is flush with the first rotating plate 11, so that the second rotating plate 16 can repeatedly carry out a plurality of cylindrical tube blanks 41 on the top of the first rotating plate 11 in the process of rotating downwards. Extrusion times, multiple times of extrusion by the second rotating plate 16, impels a plurality of tubular blanks 41 to be neatly arranged on the top of the first rotating plate 11.

As a technical optimization scheme of the present invention, the second processing mechanism includes an electric slider 23, the top of the processing table 1 is provided with a chute 8, the electric slider 23 is installed in the inside of the chute 8, and the top of the electric slider 23 is installed There is a fixed plate 4, and the side of the top of the fixed plate 4 close to the box body 2 is rotated with a rotating block, and the outer wall of the side of the rotating block away from the fixed plate 4 is equipped with a first electric telescopic rod 24, and the extension of the first electric telescopic rod 24 A round rod 43 is installed at the outlet, and a cleaning block 25 is installed on the end of the round rod 43 far away from the first electric telescopic rod 24, and a side outer wall of the casing 2 near the fixed plate 4 is provided with a cleaning block for the first electric telescopic rod 24 to drive. 25 moves to the opening 10 inside the box body 2 .

As a technical optimization scheme of the present invention, a groove is provided on the outer wall of the cleaning block 25, and a second electric telescopic rod 33 is installed in the groove, and an arc-shaped magnet block 32 is installed on the extended end of the second electric telescopic rod 33. Two third electric telescopic rods 29 are installed on the side outer wall near the round rod 43 of the cleaning block 25, and the extended ends of the two third electric telescopic rods 29 are jointly connected with a moving block 26, and the moving block 26 and the round rod 43 The outer wall of the moving block 26 is fitted with a connecting end 27 for connecting with an external air delivery mechanism, and the outer wall of the moving block 26 close to the cleaning block 25 is provided with a plurality of air outlets 28, and the cleaning block 25 moves close to An air bag 30 is installed on one side outer wall of the block 26 , and a communication pipe 31 is installed between the air bag 30 and the moving block 26 . After the cylindrical tube blanks 41 on the top of the first rotating plate 11 are arranged neatly, another external drive mechanism can be used to drive the rotating shaft to rotate, which can drive the side of the outer wall of the first rotating plate 11 where the vertical plate is installed to rotate downward for a certain angle. so that one end of a plurality of tubular blanks 41 located at the top of the first rotating plate 11 can all abut against the rubber pad 19 on the inner wall of the riser, so that the visual recognition equipment arranged inside the box body 2 can recognize a plurality of tubular blanks. The other end of the tube blank 41 is automatically identified to facilitate the detection of the lengths of multiple tubular tube blanks 41 on the top of the first rotating plate 11. If the cylindrical tube blank 41 with an unqualified length is identified, the signal can be sent to the device The controller installed inside controls the electric slider 23 to slide in the chute 8 to the same position as the unqualified tubular tube blank 41, and then the first electric telescopic rod 24 starts to drive the round rod 43 and the round rod 43. The cleaning block 25 installed at the end is inserted into the inside of the unqualified tubular blank 41, and the second electric telescopic rod 33 is activated to drive the arc-shaped magnet block 32 to protrude, and magnetically contact with the inner wall of the unqualified tubular blank 41. Adsorption, and then reset by the extended end of the first electric telescopic rod 24 to drive the cleaning block 25 and the unqualified cylindrical tube blank 41 adsorbed by the arc magnet block 32 to move from the opening 10 to the outside of the box body 2, and use the external The driving mechanism drives the rotating block to rotate downwards, and then can drive the cleaning block 25 and the unqualified cylindrical tube blank 41 to rotate downwards synchronously, until after rotating to the top of the rectangular groove 6, the second electric telescopic rod 33 drives the arc-shaped magnet block 32 Reset, so that the arc-shaped magnet block 32 is separated from the unqualified cylindrical tube blank 41, so that the unqualified cylindrical tube blank 41 automatically slides down into the rectangular groove 6, and falls in the collection box 7 for collection, which is convenient The cylindrical tube blank 41 whose length is unqualified is rejected.

And after the cleaning of the unqualified tubular blank 41 at the top of the first rotating plate 11 is completed, the protruding end of the first electric telescopic rod 24 can drive the cleaning block 25 to continue to extend into the inside of the qualified cylindrical blank 41 , scrape and clean the welding slag or other sundries inside the cylindrical tube blank 41, and after the cleaning block 25 extends into the cylindrical tube blank 41, it is driven by the extended ends of the two third electric telescopic rods 29 The moving block 26 slides on the outer wall of the round rod 43, so that the first electric telescopic rod 24 can drive the cleaning block 25 to move to the other end of the cylindrical tube blank 41. After the cleaning block 25 moves to the other end of the cylindrical tube blank 41, the third The extended end of the electric telescopic rod 29 is retracted for a certain distance, and the moving block 26 is driven to abut against one end of the tubular blank 41 to block one end of the tubular blank 41, while the other end of the tubular blank 41 will be the same. The thrust from the moving block 26 abuts against the rubber pad 19 on the inner wall of the riser, thereby completing the sealing of both ends of the cylindrical tube blank 41, and then it can be connected to the connecting end 27 through an external gas transmission mechanism, so that the external gas transmission The mechanism can discharge gas to the inside of the cylindrical tube blank 41 through the multiple air outlets 28 on the outer wall of the moving block 26, and test the air tightness of the cylindrical tube blank 41 to avoid air leakage at the welding part and affect subsequent molding. And in the process of exhausting air from multiple air outlets 28 of the moving block 26, part of the gas can be discharged to the inside of the airbag 30 through the connecting pipe 31, so that the airbag 30 is in an inflated state. The connecting pipe 31 is a flexible pipe, and the actual length is greater than The length of the round rod 43, after cleaning the inside of the cylindrical tube blank 41 and testing its airtightness, the air bag 30 in the inflated state will be against the inner wall of the cylindrical tube blank 41, and the first electric telescopic rod 24 In the process of driving the cleaning block 25 to move out from the inside of the tubular blank 41, the airbag 30 will rub against the inner wall of the tubular blank 41, and then the dust remaining inside the cylindrical blank 41 can be cleaned; because the outer wall of the airbag 30 A wear-resistant layer is provided, and when the airbag 30 rubs against the inner wall of the cylindrical tube blank 41, it can prevent the airbag 30 from being damaged by friction with the inner wall of the cylindrical tube blank 41 for a long time, prolong the service life of the airbag 30, and facilitate the subsequent cylindrical tube The injection of hydraulic oil inside the billet 41 and the repeated use of hydraulic oil. After the tubular blank 41 on the top of the first rotating plate 11 has passed multiple tests, the remaining qualified tubular blank 41 can be rotated downward by the second rotating plate 16 to drive the grinding belt 17 at the bottom of the second rotating plate 16 It abuts against the outer wall of the cylindrical tube blank 41, and the welding slag and other sundries on the outer wall of the cylindrical tube blank 41 can be polished and cleaned by the rotating grinding belt 17. Since the bottom of the first rotating plate 11 is provided with multiple through grooves 20. The sundries cleaned inside and outside of the cylindrical tube blank 41 can fall down to the bottom of the box body 2 through the through groove 20 for collection.

As a technical optimization scheme of the present invention, two fourth electric telescopic rods 22 are installed inside the mold 3, and arc-shaped push plates 21 are installed on the protruding ends of the two fourth electric telescopic rods 22, and the processing table 1 Two rectangular grooves 6 are provided on the top of the top near the box body 2 and the mold 3 side, and the bottom of the processing table 1 is located directly below the two rectangular grooves 6 and is slidably equipped with a collection box 7 . The tubular blank 41 processed by the first processing mechanism and the second processing mechanism can be moved to the Inside the mold 3, after the above-mentioned molding process, the mold 3 is opened, and the two fourth electric telescopic rods 22 provided inside the mold 3 drive the arc-shaped push plate 21 to push the molded Venturi valve body upwards to At the top of the mold 3, the electric slider 23 can drive the fixed plate 4 and the cleaning block 25 to move together to the same linear position as the Venturi valve body, and then the first electric telescopic rod 24 drives the round rod 43 and its After the moving block 26 on the outer wall moves to a position close to the Venturi valve body, air is blown toward the inside of the Venturi valve body through the air outlet 28, which can accelerate the discharge of hydraulic oil adhering to the inside of the Venturi valve body. If the molding of the cylindrical tube blank 41 inside the mold 3 fails, the cleaning block 25 can be driven deep into the inside of the cylindrical tube blank 41 by the first electric telescopic rod 24, and then the arc magnet block 32 in the protruding state is magnetically attracted to it. Finally, the external drive mechanism drives the rotating block and the first electric telescopic rod 24 to rotate downwards, and the cylindrical tube blank 41 that drives the magnetic attraction rotates to the top of another rectangular groove 6, so that the arc magnet block 32 and the forming The failed cylindrical tube blanks 41 are separated from each other, and the failed cylindrical tube blanks 41 can be dropped down to another collection box 7 for collection; after the cylindrical tube blanks 41 inside the mold 3 are successfully formed, the cleaning block 25 stretches into the inside of the Venturi valve body that has been molded successfully, and after being fixed by the arc-shaped magnet block 32 and its magnetic attraction, the rotating block is turned upwards to be in a vertical state, and after driving the first electric telescopic rod 24 to be in a vertical state, Stay for a period of time, so that the residual hydraulic oil inside the successfully formed Venturi valve body is controlled. At this time, the air bag 30 can still be inflated through the connecting pipe 31, so that the air bag 30 can be inflated with the venturi valve body. The inner walls are abutted against each other, and then the arc-shaped magnet block 32 is controlled to disengage from the Venturi valve body, so that the bottom of the Venturi valve body abuts against the moving block 26. By continuously controlling the extension of the third electric telescopic rod 29 extension and retract, drive the moving block 26 to repeatedly push the Venturi valve body on the top to move up and down, to speed up the discharge of the internal hydraulic oil, and when it moves up and down, the air bag 30 in the inflated state and the Venturi valve valve The inner wall of the Venturi valve body is in contact, and the residual hydraulic oil on the inner wall can also be scraped and cleaned, and when the air bag 30 is in contact with the inner wall of the smallest part of the Venturi valve body, the air delivery can be stopped through the external air delivery mechanism, so that The reduced volume of the airbag 30 facilitates the passage of the airbag 30 through the smallest part of the Venturi valve body, so that the residual hydraulic oil on the inner wall of the Venturi valve can be cleaned. Moreover, the cleaned hydraulic oil can also flow down to the outer wall of the first electric telescopic rod 24 along the round rod 43, and even in the process of cleaning the hydraulic oil on the inner wall of the Venturi valve valve body that has been successfully formed for a long time, the partially cleaned The hydraulic oil will flow down into the chute 8 and have a certain lubricating effect on the first electric telescopic rod 24 and the electric slider 23 .

In the present invention, when the user uses the device, a plurality of welded tubular blanks 41 can be placed in the box body 2, so that they can be automatically classified according to the diameter during the process of sliding on the top of the second inclined plate 13. , the diameter qualified cylindrical tube blank 41 will fall on the top of the first rotating plate 11 for collection, and with the help of the downward rotation of the second rotating plate 16, a plurality of cylindrical tube blanks 41 at the top of the first rotating plate 11 can be Orderly rows.

After the tubular blanks 41 on the top of the first rotating plate 11 are arranged neatly, another external drive mechanism can be used to drive the rotating shaft to rotate, which can drive the first rotating plate 11 to turn downwards at a certain angle with the rotating shaft as the center, so that multiple tubes One end of the tubular blanks 41 can be in contact with the inner wall of the riser, so that the visual recognition equipment inside the box body 2 can identify the plurality of tubular blanks 41 and detect the lengths of the multiple tubular blanks 41 .

After the cleaning of the unqualified tubular blank 41 at the top of the first rotating plate 11 is completed, the protruding end of the first electric telescopic rod 24 can drive the cleaning block 25 to continue to extend into the inside of the qualified cylindrical blank 41, Scrape and clean the welding slag or other sundries inside the cylindrical tube blank 41. After the cleaning block 25 extends into the cylindrical tube blank 41, the extended ends of the two third electric telescopic rods 29 drive the moving block 26 After the outer wall of the round rod 43 slides and the cleaning block 25 moves to the other end of the cylindrical tube blank 41, the extended end of the third electric telescopic rod 29 drives the moving block 26 to abut against one end of the cylindrical tube blank 41, and the cylindrical tube blank 41 is sealed at one end, and the other end of the tubular blank 41 is also pushed by the moving block 26 to abut against the rubber pad 19 on the inner wall of the riser, thereby completing the sealing of both ends of the cylindrical blank 41, and then the The external gas transmission mechanism is connected with the connection end 27, so that the external gas transmission mechanism can discharge the gas to the inside of the cylindrical tube blank 41 through a plurality of gas outlets 28 on the outer wall of the moving block 26, and the cylindrical tube blank 41 The air tightness is tested to avoid air leakage at the welding part and affect the subsequent molding.

During the exhausting process of multiple gas outlets 28, part of the gas can be discharged to the inside of the airbag 30 through the connecting pipe 31, so that the airbag 30 is in an inflated state, and the inside of the cylindrical tube blank 41 is cleaned and its airtightness is improved. After the detection, when the first electric telescopic rod 24 drives the cleaning block 25 to move out from the inside of the cylindrical tube blank 41, the air bag 30 will clean up the residual dust inside the cylindrical tube blank 41, which is convenient for the subsequent injection of hydraulic oil and hydraulic pressure. Oil reuse.

After the cylindrical tube blank 41 on the top of the first rotating plate 11 has undergone several tests, the remaining qualified cylindrical tube blank 41 can abut against the outer wall of the cylindrical tube blank 41 through the grinding belt 17 at the bottom of the second rotating plate 16 , The welding slag and other sundries on the outer wall of the cylindrical tube blank 41 can be polished and cleaned by the rotating grinding belt 17, and the processed cylindrical tube blank 41 can be driven by the rotating grinding belt 17 to move the cylindrical tube blank 41 To the inside of the mold 3 for molding processing, the formed Venturi valve body can be pushed upward to the top of the mold 3 through the fourth electric telescopic rod 22 to drive the arc-shaped push plate 21. At this time, the electric slider 23 can be used to drive the cleaning block 25, etc. After the components are moved to the same linear position as the Venturi valve body, air is blown toward the inside of the Venturi valve body through the air outlet 28, which can accelerate the discharge of the hydraulic oil adhered inside the Venturi valve body.

After the cylindrical tube blank 41 is successfully formed, the cleaning block 25 extends into the inside of the successfully formed Venturi valve body, and after being fixed by the arc-shaped magnet block 32 and its magnetic attraction, the first electric telescopic rod 24 is driven by the rotating block to form a vertical position. After the straight state, stay for a period of time, so that the residual hydraulic oil inside the successfully formed Venturi valve body can be treated for oil control. At this time, the air bag 30 can still be inflated through the connecting pipe 31 and offset against the inner wall of the Venturi valve body. Then, by continuously controlling the extension and retraction of the third electric telescopic rod 29 extension end, the moving block 26 can be driven to repeatedly push the Venturi valve body on its top to move up and down, and the air bag 30 in the expanded state and the Venturi valve valve The inner wall of the valve body is in contact with each other, and the residual hydraulic oil on the inner wall can also be scraped and cleaned, and the residual hydraulic oil on the inner wall of the Venturi valve can be cleaned.

The preferred embodiments of the invention disclosed above are only to help illustrate the invention. The preferred embodiments are not exhaustive in all detail, nor are the inventions limited to specific embodiments described. Obviously, many modifications and variations can be made based on the contents of this specification. This description selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The invention is to be limited only by the claims, along with their full scope and equivalents.

Claims (10)

1. A Venturi valve body forming process is characterized in that the process comprises the following steps: Step 1: blanking according to the developed length of the smallest diameter of the valve body and the developed length in the axial direction of the valve body, and welding into a cylindrical tube blank (41); Step 2: Place the cylindrical tube blank (41) in the mold (3), close the mold (3), use the sealing plug (42) and the movable pressure oil nozzle (39) to seal the cylindrical tube blank (41 ) are blocked at both ends; Step 3: Use the hydraulic system (34) to drive the hydraulic forming system (36), and inject hydraulic oil into the cylindrical tube blank (41) until the outer wall of the cylindrical tube blank (41) is closely attached to the inner wall of the mold (3) ; Step 4: While step 3 is being carried out, the hydraulic press automatic propulsion system (35) on the left side drives the propulsion mechanism (38) to move to the right in the hydraulic press guide sleeve (37), and simultaneously pushes the movable pressure oil nozzle (39), lock Tighten the process ring (40) and move the tubular blank (41) to the right to reduce the wall thickness reduction during the forming process of the tubular blank (41); Step 5: After the tubular tube blank (41) in the mold (3) is formed, control the hydraulic forming system (36) to release the pressure so that the hydraulic oil in the tubular tube blank (41) is discharged, and then open the mold (3) , take out the formed Venturi valve body, and the forming process is completed. 2. a kind of Venturi valve body forming process according to claim 1, is characterized in that, the two ends of described mold (3) are all equipped with locking technology ring (40), two locking technology rings ( 40) The sealing plug (42) and the movable pressure grease nozzle (39) can be locked respectively. 3. A Venturi valve body molding process according to claim 1, characterized in that an oil injection pipeline is provided inside the movable pressure oil injection nozzle (39), and the hydraulic oil enters the cylindrical shape through the oil injection pipeline. The inside of the tube blank (41). 4. A Venturi valve valve body molding device, which is applied to the molding process in the above-mentioned claim 1, and the device includes a processing table (1), characterized in that the top of the processing table (1) passes through A plurality of support columns are equipped with a box body (2), and the top of the processing table (1) is also connected with the bottom end of the mold (3) through the support column, and the inside of the box body (2) is provided with a (41) The first processing mechanism for sorting. The top of the processing table (1) is also equipped with a second processing mechanism for cleaning and testing the inside of the cylindrical tube blank (41). 5. A kind of Venturi valve body forming device according to claim 4, characterized in that, said first processing mechanism comprises a first swash plate (12), and the first swash plate (12) is installed in the casing ( 2), and the inside of the box (2) is located below the first slant plate (12) and a second slant plate (13) is installed, and the second slant plate (13) is respectively opened near the high end and the low end. There are a first feeding port (14) and a second feeding port (15), and the casing (2) is provided with a third feeding port (9) near the lower end outer wall of the second inclined plate (13). 6. A Venturi valve valve body forming device according to claim 5, characterized in that, the inside of the box (2) is located below the second slant plate (13) and is installed with a second slant plate (13) in an inclined state through a rotating shaft. A rotating plate (11), and the bottom of the first rotating plate (11) is equidistantly provided with a plurality of through grooves (20), the two sides of the first rotating plate (11) are equipped with vertical plates, and one of the vertical plates The plate inner wall is bonded with a rubber pad (19). 7. A Venturi valve valve body forming device according to claim 6, characterized in that, the outer wall of the box body (2) opposite to the third feeding port (9) is provided with a fourth bottom Material port (5), the second rotating plate (16) is installed in the fourth feeding port (5), and the second rotating plate (16) is equipped with a polishing belt ( 17), the fourth feeding port (5) is located below the second rotating plate (16) and is also equipped with a sealed door (18). 8. A kind of Venturi valve valve body molding device according to claim 4, is characterized in that, described second processing mechanism comprises electric slide block (23), and the top of processing table (1) offers chute (8 ), the electric slider (23) is installed inside the chute (8), the top of the electric slider (23) is equipped with a fixed plate (4), and the top of the fixed plate (4) is close to the side of the box body (2) The rotation block is installed with a rotating block, and the first electric telescopic link (24) is installed on the side outer wall of the rotating block away from the fixed plate (4), and a round bar (43) is installed on the extended end of the first electric telescopic link (24), and A cleaning piece (25) is installed on the end of the round rod (43) away from the first electric telescopic rod (24), and the outer wall of the side of the box body (2) near the fixed plate (4) is provided with the first electric telescopic rod (24) Drive the cleaning block (25) to move to the opening (10) inside the box body (2). 9. A Venturi valve body forming device according to claim 8, characterized in that, the outer wall of the cleaning block (25) is provided with a groove, and a second electric telescopic rod (33) is installed in the groove , the extended end of the second electric telescopic rod (33) is equipped with an arc-shaped magnet block (32), and the outer wall of the side of the cleaning block (25) near the round rod (43) is equipped with two third electric telescopic rods (29 ), and the extended ends of the two third electric telescopic rods (29) are jointly connected with a moving block (26), the moving block (26) is slidingly matched with the outer wall of the round rod (43), and the outer wall of the moving block (26) is installed There is a connecting end (27) for connecting with an external gas transmission mechanism, and the outer wall of the side of the moving block (26) close to the cleaning block (25) is provided with a plurality of air outlets (28), and the cleaning block (25) is close to the moving block An air bag (30) is installed on one side outer wall of (26), and a communicating pipe (31) is installed between the air bag (30) and the moving block (26). 10. A venturi valve valve body forming device according to claim 9, characterized in that, two fourth electric telescopic rods (22) are installed inside the mold (3), and the two fourth electric telescopic rods (22) The protruding ends of the telescopic rods (22) are equipped with arc-shaped push plates (21), and the top of the processing table (1) is provided with two rectangular grooves (6) on the side close to the box body (2) and the mold (3). , the bottom of the processing table (1) is located directly below the two rectangular grooves (6) and is slidably equipped with a collection box (7).

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