CN112453820B - Water tank welding device - Google Patents
Water tank welding device Download PDFInfo
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- CN112453820B CN112453820B CN202011369675.5A CN202011369675A CN112453820B CN 112453820 B CN112453820 B CN 112453820B CN 202011369675 A CN202011369675 A CN 202011369675A CN 112453820 B CN112453820 B CN 112453820B
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- water tank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000003466 welding Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
Abstract
A water tank welding device comprises a middle clamping mechanism and two side clamping mechanisms with the same structure; the two side clamping mechanisms are respectively used for clamping the upper half section and the lower half section of the water tank to be welded and are symmetrically arranged on the left end part and the right end part of the bottom plate, each side clamping mechanism comprises an outer ring and a spring clamp holder which can transversely move and push along with the first pushing cylinder, the outer ring is fixed on the first bracket, the inner wall of the outer ring is provided with a spring sliding groove, and the middle part of the lower end of the bracket is connected with the output shaft of the first pushing cylinder; the middle clamping mechanism is used for clamping the middle section of the water tank to be welded and comprises an arc clamp holder, the arc clamp holder comprises an upper half ring and a lower half ring, one ends of the upper half ring and the lower half ring are hinged through hinges, the upper half ring and the lower half ring are circular after being closed, the inner diameter of a circular pipe is matched with the outer diameter of the middle section, and the central axis of the circular pipe is parallel to the circle center of each arc plate of the two side clamping mechanisms after being closed; the coaxiality error of three sections of the water tank is reduced, and the clamping time is saved.
Description
Technical Field
The invention belongs to the technical field of water tank welding processing, and particularly relates to a water tank welding device.
Background
The technical difficulty of water tank welding is that when three sections are welded, higher coaxiality between the three sections is ensured, otherwise if the coaxiality is too low, the three sections are staggered to generate sharp angles, static electricity carried by an object is concentrated at the sharp angle positions according to the skin effect of a static electrode, and electrochemical oxidation is very easy to occur at the sharp angle positions. In the using process of the water tank, static electricity is generated, so that the sharp corner is rusted first, and water leakage can occur after the water tank is used for a long time. At present, no special fixture for welding the water tank exists, the welding of the water tank is basically carried out by manually butt-jointing three sections, and then the welding is carried out, but the coaxiality of the three sections is poor by the manual butt-jointing method, the technical difficulty of the welding of the water tank cannot be solved, and the operation is complex during the welding. And if the coaxiality of the three sections is too poor, the appearance of the water tank is also not good.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the water tank welding device which reduces the coaxiality error of three sections of the water tank and saves the clamping time.
The technical scheme of the invention is as follows: a water tank welding device comprises a middle clamping mechanism and two side clamping mechanisms with the same structure;
The two side clamping mechanisms are respectively used for clamping the upper half section and the lower half section of the water tank to be welded and are symmetrically arranged on the left end part and the right end part of the bottom plate, each side clamping mechanism comprises an outer ring and a spring clamp holder which can transversely move and push along with the first pushing cylinder, the outer ring is fixed on the first bracket, the inner wall of the outer ring is provided with a spring sliding groove, and the middle part of the lower end of the bracket is connected with the output shaft of the first pushing cylinder;
The spring holder is horizontally sleeved in the outer ring and comprises an air bag, an annular disc is arranged on the periphery of the air bag, more than two arc plates which can be opened and closed along with the shrinkage of the air bag are arranged on the annular disc, a sector plate is arranged at one end part of each arc plate, which is far away from the air bag, and an arc pressing plate for clamping the corresponding upper half section/lower half section is outwards extended from the inner wall of each sector plate; the upper end part of the outer wall of each arc-shaped plate is provided with a counter bore, and springs are arranged in the counter bores and the spring sliding grooves in an internal pressing mode; when the air bag is contracted, the spring rebounds, and after each arc-shaped plate is closed to drive the corresponding arc-shaped pressing plate to be closed, the inner diameter of the circle where each arc-shaped pressing plate is positioned is smaller than the outer diameter of the upper half section/the lower half section to be clamped;
The middle clamping mechanism is used for clamping the middle section of the water tank to be welded, the middle clamping mechanism comprises an arc clamp holder, the arc clamp holder comprises an upper semi-ring and a lower semi-ring, one ends of the upper semi-ring and the lower semi-ring are hinged through hinges, the lower semi-ring is fixed on a second support, the upper semi-ring is connected with an output shaft of an opening and closing cylinder and can be opened and closed along with the expansion of the output shaft of the opening and closing cylinder in a rotating mode around the hinges, the upper semi-ring and the lower semi-ring are closed and then are in a circular tube shape, the inner diameter of the circular tube is matched with the outer diameter of the middle section, and the central axes of the circular tube are flush with the circle centers of the arc plates of the two side clamping mechanisms after the arc plates are closed.
When the arc plates are closed, a closed cylinder is formed, and the inner diameter of the cylinder is smaller than the outer diameter of the upper half section or the lower half section.
An arc-shaped fixing seat is arranged at the upper end part of the bracket, and a sliding plate is respectively arranged at the two end parts of the lower end of the bracket; the outer ring is fixedly welded on the arc-shaped fixing seat.
The bottom plate is provided with a first slide rail which corresponds to the slide plate and extends along the transverse direction.
The second bracket comprises two symmetrical isosceles triangular frames and a connecting plate connected between the two isosceles triangular frames.
The connecting plate is connected with an output shaft of the pushing cylinder II and can longitudinally translate along with the pushing cylinder II.
The bottom plates at the lower ends of the two isosceles triangular frames are respectively provided with a second sliding rail extending longitudinally.
After the top end of the output shaft of the opening and closing cylinder is sleeved into the joint bearing, the output shaft of the opening and closing cylinder is fixedly connected with the inner ring of the joint bearing through a baffle, and the outer ring of the joint bearing is connected with the upper semi-ring through an arc-shaped support plate.
The periphery of the bottom plate is provided with a plurality of bolt fixing grooves.
The air pressure system is used for providing power sources for the two air bags, the first propelling cylinder, the opening and closing cylinder and the second propelling cylinder; the air pressure system comprises a low-pressure pump and a high-pressure pump, the low-pressure pump is divided into two air supply pipes through a first check valve to supply air to the two air bags respectively, and each branch pipe is communicated with an air inlet of the air bag through a first reversing valve, a third check valve and a first speed regulating valve respectively; the pipelines led out of the check valve III and the speed regulating valve I are led into the atmosphere through the stop valve;
The high-pressure pump is divided into four air supply pipelines through a second check valve to supply air to the first propulsion cylinder, the second opening and closing cylinder and the second propulsion cylinder respectively, wherein the three air supply pipelines are communicated with the two air inlets of the first propulsion cylinder and the second propulsion cylinder through a second reversing valve respectively, the other air supply pipeline is divided into two air pipes through a hydraulic control electromagnetic reversing valve respectively, one air pipe is communicated with the air inlet of the rod cavity of the opening and closing cylinder through a second speed regulating valve and a second hydraulic control check valve, and the other air pipe is communicated with the air inlet of the rod cavity of the opening and closing cylinder through a first hydraulic control check valve; the pipeline at the rear end of the one-way valve I is communicated with the pipeline at the rear end of the two-way valve II through the sequence valve;
And a branch pipe is led out from the pipeline between the low-pressure pump and the first check valve and from the rear end of the second check valve, and an overflow valve is arranged on each branch pipe.
Compared with the prior art, the mechanical structure can align three sections of the water tank through mechanical movement, so that the alignment is more accurate than manual alignment, the coaxiality error of the three sections of the water tank is reduced, the clamping time is saved, the clamping process is simplified, and the conversion from manual assembly to mechanical assembly is realized.
The pneumatic transmission structure adopts a mode of supplying pressure by the high-pressure pump and the low-pressure pump, and the mode can adjust the working conditions of the high-pressure pump and the low-pressure pump according to different requirements on air pressure in the system, so that the energy is saved. Because the air pressure requirement of the air bag is lower than that of the air cylinder due to the fact that the air pressure requirement of the air bag is different from that of the air cylinder, only the low-pressure pump is required to supply pressure independently when the air bag works, the high-low double-pump supplies pressure when the air cylinder works, the pressure supply conversion of the single-double pump is controlled by the sequence valve during the period, and the air pressure of the air bag is lower when the air bag works and is insufficient to open the sequence valve, so that the low-pressure pump only supplies pressure, and the high-pressure pump is unloaded through the overflow valve; when the cylinder is operating, the air bag does not need to be supplied at the moment, so the air pressure of the low-pressure pump is enough to open the sequence valve, and the high-pressure and low-pressure double pumps are used for supplying pressure.
In order to enhance the working stability of the air bag, a speed regulating valve is added in the air supply pipeline, so that the air bag can be effectively prevented from suddenly expanding and contracting. In order to prevent the air pump from being impacted by the air pressure backflow when the air pump is closed, a one-way valve is arranged at the air outlet of the air pump. In order to prevent leakage of the opening and closing cylinder, an automatic pressure maintaining loop consisting of two hydraulic control one-way valves is arranged. In order to prevent the leakage of gas from the airbag, a check valve is provided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the side clamping mechanism of the present invention;
FIG. 3 is a schematic view of the outer ring of the present invention;
FIG. 4 is a schematic view of a portion of the outer ring of the present invention;
FIG. 5 is a block diagram of the spring air bag holder of the present invention (in the air bag non-inflated state);
FIG. 6 is a top view of the spring air bag holder of the present invention in one position (with the air bag not inflated);
FIG. 7 is a cross-sectional view taken along the direction B-B in FIG. 6;
FIG. 8 is a second block diagram of the spring air bag holder of the present invention (in the air bag inflated state);
FIG. 9 is a top plan view of the spring air bag holder of the present invention in a second (air bag inflated state);
FIG. 10 is a cross-sectional view taken along the direction A-A of FIG. 9;
FIG. 11 is a schematic view of the middle clamping mechanism of the present invention;
FIG. 12 is a schematic view of a portion of the structure of the mid-section clamping mechanism of the present invention;
FIG. 13 is an assembly view of the opening and closing cylinder and the knuckle bearing of the present invention;
FIG. 14 is a schematic view of the structure of a water tank to be welded;
FIG. 15 is a schematic diagram of a pneumatic system of the present invention;
FIG. 16 is an effect diagram of the tank having too poor a three-stage post-weld coaxiality;
In the figure: 1. an air bag; 2. a spring holder; 3. a bolt fixing groove; 4. arc clamp holder; 5. a bottom plate; 6. an air bag; 7. a first propelling cylinder; 9. A first slide rail; 10. a first bracket; 11. an opening and closing cylinder; 13. A pushing cylinder II; 15. A second slide rail; 16. a second bracket; 17. a first propelling cylinder; 18. an outer ring; 19. an output shaft of the opening and closing cylinder; 20. a knuckle bearing; 21. a baffle; 22. an upper half ring; 23. a lower half ring; 24. a hinge; 25. an upper half section; 26. a middle section; 27. a lower half section;
100-1, low pressure pump; 100-2, high pressure pump; 101. an overflow valve; 102. a first check valve; 103. a second check valve; 104. a sequence valve; 105. an overflow valve; 106. a reversing valve I; 107. a reversing valve I; 108. a third check valve; 109. a first speed regulating valve; 110. a third check valve; 111. a first speed regulating valve; 112. a first hydraulic control one-way valve; 113. a second hydraulic control check valve; 114. a second speed regulating valve; 115. a hydraulically-controlled electromagnetic reversing valve; 116. a reversing valve II; 117. a reversing valve II; 118. a reversing valve II; 119. a stop valve; 120. a stop valve; 180. a spring sliding groove; 201. an arc-shaped plate; 202. a fan-shaped disc; 203. an arc-shaped pressing plate; 204. and (3) a spring.
Detailed Description
The technical solutions of the embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings, which are simplified schematic diagrams illustrating the basic structure of the present invention only by way of illustration.
In FIG. 1, the present invention includes a central clamping mechanism and two side clamping mechanisms of identical construction; the two side clamping mechanisms are respectively used for clamping an upper half section 25 and a lower half section 27 of a water tank to be welded and are symmetrically arranged on the left end part and the right end part of the bottom plate 5, each side clamping mechanism comprises an outer ring 18 and a spring clamp holder 2 which can transversely move and push along with a pushing cylinder, the outer ring 18 is fixed on a first bracket 10, and the middle part of the lower end of the first bracket 10 is connected with an output shaft of the pushing cylinder; the spring holder 2 is horizontally sleeved in the outer ring 18; the spring holder 2 comprises an air bag, an annular disc is arranged on the periphery of the air bag, more than two arc plates 201 which can be opened and closed along with the shrinkage of the air bag are arranged on the annular disc, a sector plate 202 is arranged on one end part of each arc plate 201 far away from the air bag, and an arc pressing plate 203 for clamping the corresponding upper half section 25/lower half section 27 is outwards extended from the inner wall of each sector plate 202; a counter bore is formed in the upper end part of the outer wall of each arc-shaped plate 201, and a spring 204 is arranged in each counter bore and the spring sliding groove 180 in a pressing mode; when the air bag is contracted, the springs 204 rebound, and after each arc-shaped plate 201 is closed to drive the corresponding arc-shaped pressing plate 203 to be closed, the inner diameter of the circle where each arc-shaped pressing plate 203 is positioned is smaller than the outer diameter of the upper half section 25/the lower half section 27 to be clamped; the middle clamping mechanism is used for clamping the middle section 26 of the water tank to be welded, the middle clamping mechanism comprises an arc clamp 4, the arc clamp comprises an upper half ring 22 and a lower half ring 23, one ends of the upper half ring 22 and the lower half ring 23 are hinged through hinges 24, the lower half ring 23 is fixed on the second bracket 16, the upper half ring 22 is connected with the output shaft 19 of the opening and closing cylinder, the upper half ring 22 can be opened and closed along with the expansion and contraction of the output shaft 19 of the opening and closing cylinder around the hinges 24 in a rotary mode, the upper half ring 22 and the lower half ring 23 are closed to form a circular tube, the inner diameter of the circular tube is matched with the outer diameter of the middle section 26, and the central axes of the circular tube are flush with the circle centers of the arc plates 201 of the two side clamping mechanisms after being closed. The periphery of the bottom plate 5 is provided with a plurality of bolt fixing grooves 3.
In fig. 2, an arc-shaped fixing seat is arranged at the upper end part of a first bracket 10, and a sliding plate is respectively arranged at the two end parts of the lower end of the first bracket; the outer ring 18 is fixedly welded on the arc-shaped fixing seat; the bottom plate 5 is provided with a first slide rail 9 which corresponds to the slide plate and extends along the transverse direction.
In fig. 3 and 4, the inner wall of the outer ring 18 is provided with a spring sliding groove 180.
In fig. 5, 6 and 7, when the air bag (1, 6) is not inflated, the three arcuate plates 201 of the two side clamping mechanisms form a closed cylinder when closed, the cylinder inner diameter being smaller than the outer diameter of the upper half 25 or lower half 27.
In fig. 8, 9 and 10, when the air bags (1 and 6) are inflated, the inner holes of the cylinders formed by the three arc-shaped plates 201 of the two side clamping mechanisms are increased, at the moment, the upper half section 25 and the lower half section 27 to be butt-welded are arranged between the three arc-shaped pressing plates 203, then the air bags (1 and 6) are deflated, the springs 204 rebound, and after the three arc-shaped plates 201 are closed to drive the corresponding arc-shaped pressing plates 203 to be closed, the inner diameter of the circle where the three arc-shaped pressing plates 203 are positioned is smaller than the outer diameter of the upper half section 25/the lower half section 27 to be clamped; this holds the upper and lower halves 25, 27 to be butt welded.
In fig. 11 and 12, the second bracket 16 comprises two symmetrical isosceles triangular frames and a connecting plate connected between the two isosceles triangular frames, and the connecting plate is connected with the output shaft of the second propulsion cylinder 13 and can longitudinally translate along with the second propulsion cylinder 13; the bottom plates 5 at the lower ends of the two isosceles triangular frames are respectively provided with a second sliding rail 15 extending along the longitudinal direction.
In fig. 13, after the top end of the output shaft 19 of the opening and closing cylinder is sleeved into the knuckle bearing 20, the top end of the output shaft is fixedly connected with the inner ring of the knuckle bearing 20 through a baffle 21, and the outer ring of the knuckle bearing 20 is connected with the upper half ring 22 through an arc-shaped support plate.
FIG. 14 is a schematic diagram of a structure of a water tank to be welded; the three sections are respectively an upper half section 25, a lower half section 27 and a middle section 26.
FIG. 15 is a schematic diagram of a pneumatic system of the present invention; the air pressure system comprises a low-pressure pump 100-1 and a high-pressure pump 100-2, wherein the low-pressure pump 100-1 is divided into two air supply pipes through a first check valve 102 to supply air to two air bags respectively, and each branch pipe is communicated with an air inlet of one air bag through a first reversing valve (106, 107), a third check valve (108, 110) and a first speed regulating valve (109, 111) respectively; the pipelines led out between the third check valve (108, 110) and the first speed regulating valve (109, 111) are led into the atmosphere after passing through the stop valves (119, 120);
the high-pressure pump 100-2 is divided into four air supply pipelines through a second check valve 103 to supply air to the first pushing cylinder (7 and 17), the opening and closing cylinder 11 and the second pushing cylinder 13 respectively, wherein the three air supply pipelines are communicated with two air inlets of the first pushing cylinder and the second pushing cylinder 13 through a second reversing valve (116, 118 and 117) respectively, the other air supply pipeline is divided into two air pipes through a hydraulic control electromagnetic reversing valve 115 respectively, one air pipe is communicated with a rod cavity air inlet of the opening and closing cylinder 11 through a second speed regulating valve 114 and a second hydraulic control check valve 113, and the other air pipe is communicated with a rodless cavity air inlet of the opening and closing cylinder 11 through a first hydraulic control check valve 112; the pipeline at the rear end of the first check valve 102 is communicated with the pipeline at the rear end of the second check valve 103 through a sequence valve 104;
and a branch pipe is respectively led out from the pipeline between the low-pressure pump 100-1 and the first check valve 102 and the pipeline at the rear end of the second check valve 103, and an overflow valve is respectively arranged on each branch pipe.
The working process comprises the following steps:
opening the low-pressure pump 100-1 and the reversing valve I107, inflating the air bag 1, opening the left spring holder, and putting the left spring holder into the upper half section 25 of the water tank; then the stop valve 119 is opened to deflate the air bag 1, and the left spring holder clamps the upper half section 25 of the water tank;
Then the first reversing valve 106 is opened, the air bag 6 is inflated, the right spring holder is opened and put into the lower half section 27 of the water tank, and then the stop valve 120 is opened, the air bag 6 is deflated, and the right spring holder clamps the lower half section 27 of the water tank;
Simultaneously, the low-pressure pump 100-1, the high-pressure pump 100-2, the sequence valve 104 and the hydraulic control electromagnetic directional valve 115 are started, the opening and closing cylinder 11 is inflated to enable the piston rod to extend, the upper half ring 22 of the circular arc clamp holder 4 is opened, and the middle section 26 of the water tank is placed in the lower half ring 23 of the circular arc clamp holder; reversing the hydraulic control electromagnetic reversing valve 115, retracting the piston rod of the opening and closing cylinder 11, closing the arc clamp 4, and clamping the middle section 26 of the water tank;
Then the second reversing valve 117 is opened, so that the piston rod of the propulsion cylinder 13 extends to the limit position; opening the reversing valve II 116 to enable the piston rod of the first propelling cylinder 7 on the left to extend until the middle section 26 of the water tank contacts the upper half section 25 of the water tank; and opening the reversing valve II 118 to extend the piston rod of the pushing cylinder I17 on the right until the middle section 26 of the water tank contacts the lower half section 27 of the water tank, and thus, after the water tank is spliced, pre-welding the sections of the water tank is started.
The working flow of the hydraulic system is as follows:
The first step: turning on the low pressure pump 100-1 and turning on the high pressure pump 100-2;
And a second step of: 1YA in the first reversing valve 107 is electrified, the air bag 1 is inflated, the sequence valve 104 is closed because the air bag 1 needs low air pressure, the air bag 1 is inflated by the low-pressure pump 100-1, the high-pressure pump 100-2 is unloaded through the overflow valve 105, and the specific air flow is as follows:
Low pressure pump 100-1- & gt one-way valve one 102- & gt reversing valve one 107- & gt one-way valve three 108- & gt speed regulating valve one 109- & gt air bag 1;
The low-pressure pump 100-1 is unloaded through the overflow valve 101 until the air bag 1 is filled with air, the upper half 25 of the water tank is placed in the left spring holder, after the position is adjusted, 1YA in the first reversing valve 107 is powered off, the stop valve 119 is opened, the air bag 1 is deflated, and the upper half 25 of the water tank is clamped;
And a third step of: 2YA in the first reversing valve 106 is electrified to inflate the air bag 6, the sequence valve 104 is closed because the air bag 6 needs low air pressure, the air bag 6 is inflated by the low-pressure pump 100-1, the high-pressure pump 100-2 is unloaded by the overflow valve 105, and the specific air flow is as follows:
low pressure pump 100-1- & gt one-way valve one 102- & gt reversing valve one 106- & gt one-way valve three 110- & gt speed regulating valve one 111- & gt air bag 6;
the low-pressure pump 100-1 is unloaded through the overflow valve 101 until the air bag 6 is full of air, the lower half 27 of the water tank is placed in the spring holder on the right, after the position is adjusted, 2YA in the first reversing valve 106 is powered off, the stop valve 120 is opened, the air bag 6 is deflated, and the lower half 27 of the water tank is clamped;
Fourth step: energizing 4YA in the hydraulically-controlled electromagnetic directional valve 115, and opening the sequence valve 104 under the air pressure of the low-pressure pump 100-1 because the first directional valve 107 and the first directional valve 106 are closed; so the opening and closing cylinder 11 is inflated by the low pressure pump 100-1 and the high pressure pump 100-2 at the same time, so that the piston rod of the opening and closing cylinder 11 stretches out, the upper half ring 22 of the arc clamp 4 is opened, and the specific airflow is as follows:
The hydraulic control system comprises a low-pressure pump 100-1, a first check valve 102, a sequence valve 104, a right cavity of a hydraulic control electromagnetic directional valve 115, a first hydraulic control check valve 112, a rodless cavity of an opening and closing cylinder 11, a second hydraulic control check valve 113, a second speed regulating valve 114, a right cavity of the hydraulic control electromagnetic directional valve 115 and the outside;
High-pressure pump 100-2, one-way valve two 103, right cavity of hydraulic control electromagnetic directional valve 115, hydraulic control one-way valve one 112, rodless cavity of opening and closing cylinder 11, hydraulic control one-way valve two 113, speed regulating valve two 114, right cavity of hydraulic control electromagnetic directional valve 115 and outside;
Then, the water tank middle section 26 is placed in the circular arc clamp 4, 3YA in the hydraulic control electromagnetic directional valve 115 is electrified, and the piston rod of the opening and closing cylinder 11 is retracted, so that the water tank middle section 26 is clamped by the circular arc clamp 4, and the specific airflow is as follows:
the hydraulic control system comprises a low-pressure pump 100-1, a first check valve 102, a sequence valve 104, a left cavity of a hydraulic control electromagnetic directional valve 115, a second speed regulating valve 114, a second hydraulic control check valve 113, a rod cavity of an opening and closing cylinder 11, a first hydraulic control check valve 112, a left cavity of the hydraulic control electromagnetic directional valve 115 and the outside;
high-pressure pump 100-2- & gt a second check valve 103- & gt a left cavity of a hydraulic control electromagnetic directional valve 115- & gt a second speed regulating valve 114- & gt a second hydraulic control check valve 113- & gt a rod cavity of an opening and closing cylinder 11- & gt a first hydraulic control check valve 112- & gt a left cavity of the hydraulic control electromagnetic directional valve 115- & gt the outside;
wherein, in order to prevent the leakage of the opening and closing cylinder 11, an automatic pressure maintaining loop consisting of two hydraulic control one-way valves (112, 113) is arranged;
Fifth step: energizing 9YA in the second reversing valve 116 to extend the piston rod of the first propulsion cylinder 7 and move the left spring holder forward to the limit position; energizing 7YA in the second electromagnetic directional valve 117 to extend the piston rod of the second pushing cylinder 13 and move the arc clamp 4 forward to the limit position; energizing 5YA in the second electromagnetic directional valve 118 to extend the piston rod of the first propulsion cylinder 17 and move the right spring holder forward to the limit position;
Since the three steps are almost carried out synchronously, the demand for air flow is large, so the high-pressure pump and the low-pressure pump supply pressure simultaneously, and the specific air flow is as follows:
low pressure pump 100-1- > one-way valve one 102- > sequence valve 104- > left chamber of reversing valve two 116; high-pressure pump 100-2- & gtone-way valve two 103- & gtthe left cavity of reversing valve two 117;
Low pressure pump 100-1- > one-way valve one 102- > sequence valve 104- > left chamber of reversing valve two 116; high-pressure pump 100-2- & gtone-way valve two 103- & gtthe left cavity of reversing valve two 118;
Low pressure pump 100-1- > one-way valve one 102- > sequence valve 104- > left chamber of reversing valve two 116; high-pressure pump 100-2- & gtone-way valve two 103- & gtthe left cavity of reversing valve two 118;
Under the pushing of the first pushing cylinder (7 and 17) and the second pushing cylinder (13), when the left spring holder, the right spring holder and the arc holder (4) are moved forward to the limit position, the three sections of the water tank are just completely spliced together, then the pre-welding is started, after the pre-welding is finished, the left spring holder is opened, then the right spring holder is opened, then the arc holder is opened, the pre-welded water tank is taken out, and then the pre-welded water tank is integrally welded, wherein the specific flow is as follows:
a. 1YA in the first reversing valve 107 is electrified to inflate the airbag 1, the sequence valve 104 is closed because the air pressure required by the airbag 1 is low, the airbag 1 is inflated by the low-pressure pump 100-1, the high-pressure pump 100-2 is unloaded by the overflow valve 105, and the specific air flow is as follows:
Low pressure pump 100-1- & gt one-way valve one 102- & gt reversing valve one 107- & gt one-way valve three 108- & gt speed regulating valve one 109- & gt air bag 1;
until the air bag 1 is full of air, the low-pressure pump 100-1 is unloaded through the overflow valve 101, and the left spring holder is opened;
b. 2YA in the first reversing valve 106 is electrified to inflate the air bag 6, the sequence valve 104 is closed because the air bag 6 needs low air pressure, the air bag 6 is inflated by the low-pressure pump 100-1, the high-pressure pump 100-2 is unloaded by the overflow valve 105, and the specific air flow is as follows:
low pressure pump 100-1- & gt one-way valve one 102- & gt reversing valve one 106- & gt one-way valve three 110- & gt speed regulating valve one 111- & gt air bag 6;
Until the air bag 6 is full of air, the low-pressure pump 100-1 is unloaded through the overflow valve 101, and the spring holder on the right is opened;
c. Energizing 10YA in the second reversing valve 116 to retract the piston rod of the first propulsion cylinder 7 and retract the left spring holder to the limit position;
d. energizing 6YA in the second reversing valve 118 to retract the piston rod of the first propulsion cylinder 17 to retract the right spring holder to the limit position;
e. 4YA in the hydraulic control electromagnetic directional valve 115 is electrified, so that the piston rod of the opening and closing cylinder 11 extends out, and the circular arc clamp 4 is used for opening, and the specific airflow is as follows:
The hydraulic control system comprises a low-pressure pump 100-1, a first check valve 102, a sequence valve 104, a right cavity of a hydraulic control electromagnetic directional valve 115, a first hydraulic control check valve 112, a rodless cavity of an opening and closing cylinder 11, a second hydraulic control check valve 113, a second speed regulating valve 114 and a right cavity of the hydraulic control electromagnetic directional valve 115;
high-pressure pump 100-2, one-way valve two 103, right cavity of hydraulic control electromagnetic directional valve 115, hydraulic control one-way valve one 112, rodless cavity of opening and closing cylinder 11, hydraulic control one-way valve two 113, speed regulating valve two 114 and right cavity of hydraulic control electromagnetic directional valve 115;
f. the pre-welded water tank is taken out of the circular arc clamp 4;
g. Energizing 8YA in the second reversing valve 117 to retract the piston rod of the second pushing cylinder 13 and enable the arc clamp 4 to retract to the limit position;
h. the low pressure pump 100-1 and the high pressure pump 100-2 are turned off.
FIG. 16 is an effect diagram of the tank having too poor a three-stage post-weld coaxiality; a sharp angle C is formed inside the tank.
Claims (6)
1. A water tank welding set, characterized in that: comprises a middle clamping mechanism and two side clamping mechanisms with the same structure;
the two side clamping mechanisms are respectively used for clamping an upper half section (25) and a lower half section (27) of the water tank to be welded and are symmetrically arranged on the left end part and the right end part of the bottom plate (5), each side clamping mechanism comprises an outer ring (18) and a spring clamp holder (2) which can transversely move and push along with a first pushing cylinder, the outer ring (18) is fixed on a first bracket (10), a spring sliding groove (180) is formed in the inner wall of the outer ring, and the middle part of the lower end of the first bracket (10) is connected with an output shaft of the first pushing cylinder;
The spring holder (2) is horizontally sleeved in the outer ring (18), the spring holder (2) comprises an air bag, an annular disc is arranged on the periphery of the air bag, more than two arc plates (201) which can be opened and closed along with the shrinkage of the air bag are arranged on the annular disc, a sector plate (202) is arranged at one end part of each arc plate (201) far away from the air bag, and an arc pressing plate (203) for clamping the corresponding upper half section (25)/lower half section (27) is outwards extended from the inner wall of each sector plate (202); a counter bore is formed in the upper end part of the outer wall of each arc-shaped plate (201), and a spring (204) is arranged in each counter bore and the spring sliding groove (180) in an internal pressure mode; when the air bag is contracted, the springs (204) rebound, and after each arc-shaped plate (201) is closed to drive the corresponding arc-shaped pressing plate (203) to be closed, the inner diameter of the circle where each arc-shaped pressing plate (203) is positioned is smaller than the outer diameter of the upper half section (25)/the lower half section (27) to be clamped;
The middle clamping mechanism is used for clamping a middle section (26) of a water tank to be welded and comprises an arc clamp (4), the arc clamp comprises an upper half ring (22) and a lower half ring (23), one ends of the upper half ring (22) and the lower half ring (23) are hinged through a hinge (24), the lower half ring (23) is fixed on a bracket II (16), the upper half ring (22) is connected with an opening and closing cylinder output shaft (19) and can be opened and closed in a rotating mode along with the opening and closing cylinder output shaft (19) around the hinge (24), the upper half ring (22) and the lower half ring (23) are closed and are in a circular tube shape, the inner diameter of the circular tube is matched with the outer diameter of the middle section (26), and the central axes of the circular tube are flush with the circle centers of all arc plates (201) of the two side clamping mechanisms after being closed;
When the arc plates (201) are closed, a closed cylinder is formed, and the inner diameter of the cylinder is smaller than the outer diameter of the upper half section (25) or the lower half section (27);
The upper end part of the first bracket (10) is provided with an arc-shaped fixing seat, and two end parts of the lower end are respectively provided with a sliding plate; the outer ring (18) is fixedly welded on the arc-shaped fixed seat;
The top end of the opening and closing cylinder output shaft (19) is sleeved into the joint bearing (20), and is fixedly connected with the inner ring of the joint bearing (20) through a baffle plate (21), and the outer ring of the joint bearing (20) is connected with the upper half ring (22) through an arc-shaped support plate;
The device also comprises an air pressure system for providing power sources for the two air bags, the first propelling cylinder, the opening and closing cylinder (11) and the second propelling cylinder (13); the air pressure system comprises a low-pressure pump (100-1) and a high-pressure pump (100-2), wherein the low-pressure pump (100-1) is divided into two air supply pipes through a first check valve (102) to supply air to two air bags respectively, and each branch pipe is communicated with an air inlet of one air bag through a first reversing valve, a third check valve and a first speed regulating valve respectively; the pipelines led out of the check valve III and the speed regulating valve I are led into the atmosphere through the stop valve;
The high-pressure pump (100-2) is divided into four air supply pipelines through a second check valve (103) to supply air to the first propulsion cylinder, the opening and closing cylinder (11) and the second propulsion cylinder (13), wherein the three air supply pipelines are respectively communicated with the two air inlets of the first propulsion cylinder and the second propulsion cylinder (13) through a second reversing valve, the other air supply pipeline is respectively divided into two air pipes through a hydraulic control electromagnetic reversing valve, one air pipe is communicated with the air inlet of a rod cavity of the opening and closing cylinder (11) through a second speed regulating valve (114) and a second hydraulic control check valve (113), and the other air pipe is communicated with the air inlet of a rodless cavity of the opening and closing cylinder (11) through a first hydraulic control check valve (112); the pipeline at the rear end of the first check valve (102) is communicated with the pipeline at the rear end of the second check valve (103) through a sequence valve (104);
And a branch pipe is respectively led out from the pipeline between the low-pressure pump (100-1) and the first check valve (102) and the pipeline at the rear end of the second check valve (103), and an overflow valve is respectively arranged on each branch pipe.
2. A water tank welding apparatus as claimed in claim 1, wherein: the bottom plate (5) is provided with a first slide rail (9) which corresponds to the slide plate and extends along the transverse direction.
3. A water tank welding apparatus as claimed in claim 1, wherein: the second bracket (16) comprises two symmetrical isosceles triangular frames and a connecting plate connected between the two isosceles triangular frames.
4. A tank welding apparatus as claimed in claim 3, wherein: the connecting plate is connected with an output shaft of the second propelling cylinder (13) and can longitudinally translate along with the second propelling cylinder (13).
5. A tank welding apparatus as claimed in claim 3, wherein: the bottom plates (5) at the lower ends of the two isosceles triangular frames are respectively provided with a second sliding rail (15) extending along the longitudinal direction.
6. A water tank welding apparatus as claimed in claim 1, wherein: the periphery of the bottom plate (5) is provided with a plurality of bolt fixing grooves (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011369675.5A CN112453820B (en) | 2020-11-30 | 2020-11-30 | Water tank welding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011369675.5A CN112453820B (en) | 2020-11-30 | 2020-11-30 | Water tank welding device |
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| CN112453820A CN112453820A (en) | 2021-03-09 |
| CN112453820B true CN112453820B (en) | 2024-05-03 |
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| CN202011369675.5A Active CN112453820B (en) | 2020-11-30 | 2020-11-30 | Water tank welding device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113478267B (en) * | 2021-09-07 | 2021-12-10 | 江苏博润图制造有限公司 | Positioning fixture for machining shell cover of compressor shell |
| CN114346510A (en) * | 2022-02-18 | 2022-04-15 | 浙江正同管业有限公司 | Welding equipment for pipe fitting production |
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| GB2514593B (en) * | 2013-05-30 | 2016-02-17 | Acergy France SAS | Internal line-up clamps for welding pipes |
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| JPH09150297A (en) * | 1995-11-27 | 1997-06-10 | Toshiba Corp | Device for automatically welding piping and treatment of the same device |
| CN205978236U (en) * | 2016-08-11 | 2017-02-22 | 北京磊焱氮气弹簧技术研究所 | Automatic change equipment and aerify equipment of binding off, dual -seal structure air spring simultaneously |
| CN107214467A (en) * | 2017-07-04 | 2017-09-29 | 苏州市合叶精密机械有限公司 | A kind of flexible fixture suitable for irregular shape pipeline |
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| CN112453820A (en) | 2021-03-09 |
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