Semi-automatic assembly production line of high-pressure water heater

Abstract

The invention relates to the technical field of high-pressure heater assembly, in particular to a semi-automatic assembly production line of a high-pressure water heater, which comprises a hoisting mechanism for hoisting an end socket above a shell and clamping and positioning mechanisms arranged on two sides of the shell and used for clamping and positioning the shell and providing assembly nuts for the shell; when the lower ends of the bolts on the upper flange plate are in extrusion contact with the upper surfaces of the nuts, the bolts are driven to move upwards, and when the upper flange plate continues to move downwards to a certain position, the end socket is in contact with the upper end of the shell, the bolts are driven to rotate by means of the extrusion rotating structure, and the bolts are in threaded connection with the nuts during rotation. The bolts and the nuts can be conveniently and rapidly assembled, the bolts and the nuts do not need to be manually installed one by one, all the bolts and the nuts can be assembled at a time, and therefore the end socket and the shell can be assembled, the assembly efficiency of the end socket and the shell is improved, and meanwhile the installation convenience of the bolts and the nuts is improved.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure heater assembly, and in particular to a semi-automatic assembly production line for a high-pressure water heater. Background Art

[0002] A high-pressure water heater is a heat conversion device. Currently, high-pressure heaters are divided into horizontal high-pressure heaters and vertical high-pressure heaters. When producing a vertical high-pressure heater, it is necessary to connect the heater head and the shell through flanges, bolts, and nuts. At present, most of them are driven to move up by hoisting, and the head is moved to the top of the shell, and then the head is driven to move down. The head moves down and contacts the end of the shell, and then the bolts need to be manually placed in the screw holes of the flange, and tightened and reinforced with nuts to complete the assembly of the head and the shell. This assembly method requires manual installation of the bolts and nuts one by one, and the assembly efficiency is low. Therefore, a semi-automatic assembly production line for high-pressure water heaters is proposed to improve the assembly efficiency between the head and the shell, and at the same time improve the installation convenience of the bolts and nuts. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides a semi-automatic assembly production line for a high-pressure water heater, which improves the assembly efficiency between the head and the shell, and improves the convenience of installing bolts and nuts.

[0004] The technical solution adopted by the present invention to solve its technical problems is a semi-automatic assembly production line for a high-pressure water heater, including a hoisting mechanism for hoisting a head to the top of a shell, and a clamping and positioning mechanism arranged on both sides of the shell for clamping and positioning the shell and providing assembly nuts for the shell, a clamping mechanism for clamping the head is connected below the hoisting mechanism, and an extrusion and rotation structure for automatically twisting the bolts arranged on the head after the head contacts the top of the shell.

[0005] Specifically, the extrusion rotation structure includes a sleeve opening downward, and a sleeve rotatably connected to the inside of the sleeve, the inner wall of the sleeve is provided with a spiral guide groove, the outer side of the sleeve is fixedly connected with a guide block slidably connected to the spiral guide groove, the lower end of the sleeve is rotatably connected with a horizontally arranged fixed plate, and the fixed plate has a plurality of groups of mounting holes corresponding to the bolts distributed circumferentially, and a rotating seat is rotatably connected in the mounting holes, and a polygonal groove is provided on the lower surface of the rotating seat, and a plurality of groups of vertically arranged damping gas spring rods are connected between the fixed plate and the sleeve, and the rotating seat is driven by meshing with teeth arranged on the inner side of the sleeve through a one-way gear.

[0006] Specifically, the upper end of the shell is fixedly connected to a lower flange, and the clamping and positioning mechanism includes arc-shaped positioning plates arranged on both sides of the top of the shell, and the arc-shaped positioning plates are clamped at the lower part of the lower flange. The lower surfaces of the arc-shaped positioning plates are fixedly connected to vertically arranged connecting plates, and the side of the connecting plate away from the shell is fixedly connected to a horizontally arranged first pneumatic telescopic rod, and the fixed ends of the first pneumatic telescopic rod are connected to vertically arranged support seats, and the positioning telescopic rod is fixedly connected between the support seats and the arc-shaped positioning plates.

[0007] Specifically, the clamping positioning mechanism also includes several groups of positioning grooves arranged on the arc-shaped positioning plate, nuts are placed in the positioning grooves, and the side of the arc-shaped positioning plate close to the shell is provided with a first movable groove connected to the positioning groove, and the lower surface of the arc-shaped positioning plate is provided with a second movable groove connected to the positioning groove and the first movable groove.

[0008] Specifically, the lower end of the head is fixedly connected to an upper flange; the clamping mechanism includes a first connecting rod circumferentially distributed on the outside of the sleeve, one end of the first connecting rod is fixedly connected to a vertically arranged second connecting rod, the lower end of the second connecting rod is fixedly connected to a horizontally arranged hydraulic telescopic rod, and the output ends of the hydraulic telescopic rods are fixedly connected to arc-shaped clamping plates, which correspond to the outer side of the upper flange.

[0009] Specifically, it also includes a conveying platform for conveying the shells, and the conveying platform is provided with a plurality of groups of vertically arranged shells; the support seats are arranged on both sides of the conveying platform.

[0010] Specifically, the lifting mechanism includes a conveying track horizontally arranged above the conveying platform, a horizontally arranged electric slider is slidably connected to the conveying track, both ends of the conveying track are fixedly connected to vertically arranged columns, the lower surface of the electric slider is fixedly connected to an electric telescopic rod, the fixed end of the electric telescopic rod is fixedly connected to the lower surface of the electric slider, and the output end of the electric telescopic rod is rotatably connected to the upper surface of the sleeve.

[0011] Specifically, a horizontally arranged second pneumatic telescopic rod is provided on the column, a fixed end of the second pneumatic telescopic rod is fixedly connected to one side of the column, an output end of the second pneumatic telescopic rod is fixedly connected to a first extrusion plate, a cross bar is fixedly connected to the outer side of the fixed end of the electric telescopic rod, one end of the cross bar is fixedly connected to a vertically arranged second extrusion plate, the second extrusion plate corresponds to the first extrusion plate, and the fixed end of the second pneumatic telescopic rod is connected to the fixed end of the first pneumatic telescopic rod through a pipeline.

[0012] Specifically, anti-slip pads are provided on the inner sides of the arc-shaped clamping plate and the arc-shaped positioning plate.

[0013] Specifically, an inclined reinforcing rod is fixedly connected between the upright column and the conveying track; and a reinforcing rib is fixedly connected to a side of the support seat away from the arc-shaped positioning plate.

[0014] Beneficial effects of the present invention:

[0015] (1) The semi-automatic assembly production line of a high-pressure water heater described in the present invention, when the lower end of the bolt on the upper flange is squeezed into contact with the upper surface of the nut, the bolt is driven to move upward. When the upper flange continues to move downward to a certain position, the head contacts the upper end of the shell. At this time, the extrusion rotation structure drives several groups of bolts to rotate. When the bolts rotate, they are threadedly connected with the nuts, thereby facilitating the rapid assembly of several groups of bolts and nuts. There is no need to manually install the bolts and nuts one by one. All bolts and nuts can be assembled at one time, thereby completing the assembly of the head and the shell, thereby improving the assembly efficiency between the head and the shell, and at the same time improving the convenience of installing the bolts and nuts.

[0016] (2) In the semi-automatic assembly production line of the high-pressure water heater described in the present invention, when the bolts and nuts are assembled, the clamping mechanism is driven to reset and no longer clamp the head, and the arc positioning plate is reset and moved at the same time. When the arc positioning plate is reset and moved, the nut is slidably connected to the first movable groove, thereby disengaging the nut from the arc positioning plate. At the same time, the second movable groove facilitates the disengagement of the lower end of the bolt from the arc positioning plate, thereby further improving the convenience and efficiency of assembling the head and the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 is an axonometric view of the present invention;

[0019] Figure 2 is a side view of the present invention;

[0020] Figure 3 for Figure 1 A magnified image of area A;

[0021] Figure 4 It is an axonometric view of the clamping mechanism of the present invention;

[0022] Figure 5 for Figure 4 A magnified view of area B;

[0023] Figure 6 A bottom view of the clamping mechanism of the present invention;

[0024] Figure 7 for Figure 6 A magnified view of region C;

[0025] Figure 8It is a schematic cross-sectional view of the sleeve of the present invention;

[0026] Fig. 9 for Figure 8 A magnified view of region D;

[0027] Fig.10 It is a schematic diagram of the structure after the sleeve of the present invention moves downward;

[0028] Fig.11 for Fig.10 A magnified view of the E region;

[0029] Fig.12 for Fig.10 A magnified view of the F region;

[0030] In the figure: 1, head; 2, shell; 3, nut; 4, bolt; 5, sleeve; 6, casing; 7, spiral guide groove; 8, guide block; 9, fixing plate; 10, mounting hole; 11, rotating seat; 12, polygonal groove; 13, damping gas spring rod; 14, one-way gear; 15, teeth; 16, lower flange; 17, arc positioning plate; 18, connecting plate; 19, first gas pressure telescopic rod; 20, support seat; 21, positioning telescopic rod; 22, Positioning groove; 23, first movable groove; 24, second movable groove; 25, upper flange; 26, first connecting rod; 27, second connecting rod; 28, hydraulic telescopic rod; 29, arc clamping plate; 30, conveying platform; 31, conveying track; 32, electric slider; 33, column; 34, electric telescopic rod; 35, second pneumatic telescopic rod; 36, first extrusion plate; 37, cross bar; 38, second extrusion plate; 39, reinforcing rod; 40, reinforcing rib. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] In order to improve the assembly efficiency between the head and the shell, and at the same time improve the convenience of installing the bolts and nuts, as an embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 As shown, a semi-automatic assembly production line of a high-pressure water heater described in the present invention includes a hoisting mechanism for hoisting a head 1 above a shell 2, and a clamping and positioning mechanism arranged on both sides of the shell 2 for clamping and positioning the shell 2 and providing the shell 2 with an assembly nut 3, and a clamping mechanism for clamping the head 1 and an extrusion and rotation structure for automatically twisting the bolt 4 arranged on the head 1 after the head 1 and the top of the shell 2 are in contact are connected below the hoisting mechanism.

[0033] When in use, several groups of bolts 4 are first inserted into the head 1, and the head 1 is clamped and fixed by the clamping mechanism to ensure the stability of the head 1, and then the clamping mechanism and the head 1 are driven to move by the hoisting mechanism. When the head 1 moves to a certain distance, the shell 2 is clamped and fixed by the clamping and positioning mechanism, and the nut 3 is transported to the outside of the shell 2. When the head 1 continues to move to a certain position, the head 1 is located above the shell 2, and the clamping mechanism and the head 1 are driven to move downward by the hoisting mechanism. When the head 1 moves downward to a certain position, the lower ends of the bolts 4 on the head 1 and the nuts 3 are aligned. The upper surface is squeezed and contacted, thereby squeezing and driving the bolts 4 to move upward. When the head 1 continues to move downward to a certain position, the head 1 contacts the upper end of the shell 2. At this time, the extrusion rotation structure drives several groups of bolts 4 to rotate. When the bolts 4 rotate, they are threadedly connected with the nuts 3, so that it is convenient to quickly assemble several groups of bolts 4 and nuts 3. There is no need to manually install the bolts 4 and nuts 3 one by one. All bolts 4 and nuts 3 can be assembled at one time, thereby completing the assembly of the head 1 and the shell 2, thereby improving the assembly efficiency between the head 1 and the shell 2, and at the same time improving the installation convenience of the bolts 4 and nuts 3;

[0034] It should be pointed out that after the bolt 4 and the nut 3 described in the present invention are threadedly connected, an electric torque wrench is required to tighten and reinforce the bolt 4 and the nut 3 to ensure the sealing and stability between the shell 2 and the head 1.

[0035] In order to facilitate the rotation of the bolt 4, for example, Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 As shown, the present invention also includes that the extrusion rotation structure includes a sleeve 5 with an opening downward, and a sleeve 6 rotatably connected to the inside of the sleeve 5, the inner wall of the sleeve 5 is provided with a spiral guide groove 7, the outer side of the sleeve 6 is fixedly connected with a guide block 8 slidably connected to the spiral guide groove 7, the lower end of the sleeve 6 is rotatably connected with a horizontally arranged fixed plate 9, a plurality of groups of mounting holes 10 corresponding to the bolts 4 are distributed circumferentially on the fixed plate 9, a rotating seat 11 is rotatably connected in each of the mounting holes 10, the lower surface of the rotating seat 11 is provided with a polygonal groove 12, a plurality of groups of vertically arranged damping gas spring rods 13 are connected between the fixed plate 9 and the sleeve 5, and the rotating seat 11 is meshed and transmitted with a tooth 15 arranged on the inner side of the sleeve 6 through a one-way gear 14.

[0036] When in use, when the head 1 is located above the shell 2, the lifting mechanism drives the clamping mechanism and the head 1 to move downward. When the head 1 moves down to a certain position, the lower end of the bolt 4 on the head 1 is pressed and contacted with the upper surface of the nut 3, thereby pressing and driving the bolt 4 to move upward. When the bolt 4 moves upward, the upper end of the bolt 4 first moves into the corresponding polygonal groove 12. As the clamping mechanism continues to move downward, the bolt 4 squeezes the polygonal groove 12 and the rotating seat 11. When the rotating seat 11 moves upward, it drives the fixed plate 9 and the sleeve 6 to move upward. When the sleeve 6 moves upward, it relies on the guide block 8 to slide with the spiral guide groove 7, thereby driving the sleeve 6 to rotate and move upward. When the sleeve 6 rotates and moves upward, it is rotationally connected with the fixed plate 9, and at the same time squeezes the damping gas spring. The rod 13 can avoid the bolt 4 and the nut 3 from being damaged by rigid contact, and the one-way gear 14 can avoid driving the rotating seat 11 to rotate, thereby ensuring the stability of the bolt 4; when the head 1 continues to move down to a certain position, the head 1 is in contact with the upper end of the shell 2, and the damping gas spring rod 13 slowly resets and drives the fixed plate 9, the rotating seat 11 and the sleeve 6 to move down. The sleeve 6 rotates during the downward movement, and the teeth 15 on the inner side of the sleeve 6 are meshed with the one-way gear 14 to drive the rotating seat 11 to rotate. When the rotating seat 11 rotates, the polygonal groove 12 drives the bolt 4 to rotate. When the bolt 4 rotates, it is threadedly connected with the nut 3, so as to facilitate the rapid assembly of several groups of bolts 4 and nuts 3;

[0037] When the bolts 4 and nuts 3 are assembled, the driving clamping mechanism no longer clamps the head 1, and the sleeve 5 is driven upward by the lifting mechanism to facilitate the subsequent assembly of the bolts 4 and nuts 3 on the next set of head 1 and shell 2.

[0038] In order to facilitate the clamping and fixing of the outer side of the housing 2, for example, Figure 1 , Figure 2 , Figure 3 As shown, the present invention also includes that the upper end of the shell 2 is fixedly connected with a lower flange 16, and the clamping and positioning mechanism includes an arc-shaped positioning plate 17 arranged on both sides of the top of the shell 2, and the arc-shaped positioning plate 17 is clamped at the lower part of the lower flange 16, and the lower surface of the arc-shaped positioning plate 17 is fixedly connected with a vertically arranged connecting plate 18, and the side of the connecting plate 18 away from the shell 2 is fixedly connected with a horizontally arranged first pneumatic telescopic rod 19, and the fixed ends of the first pneumatic telescopic rod 19 are connected with a vertically arranged support seat 20, and a positioning telescopic rod 21 is fixedly connected between the support seat 20 and the arc-shaped positioning plate 17.

[0039] When in use, the lifting mechanism drives the clamping mechanism and the head 1 to move. When the head 1 moves to a certain distance, the first pneumatic telescopic rod 19 is driven to drive the arc positioning plate 17 to move. When the arc positioning plate 17 moves to a certain distance, the arc positioning plate 17 clamps and fixes the outer side of the shell 2. At the same time, the upper surface of the arc positioning plate 17 is located below the lower flange 16 to ensure the stability of the shell 2. The stability of the arc positioning plate 17 can be further guaranteed by relying on the positioning telescopic rod 21, and the stability of the first pneumatic telescopic rod 19 and the positioning telescopic rod 21 can be guaranteed by relying on the support seat 20.

[0040] For example, Figure 1 , Figure 2 , Figure 3 As shown, the present invention also includes that the clamping positioning mechanism also includes a plurality of groups of positioning grooves 22 arranged on the arc-shaped positioning plate 17, nuts 3 are placed in the positioning grooves 22, and the arc-shaped positioning plate 17 is provided with a first movable groove 23 connected to the positioning groove 22 on one side close to the shell 2, and the lower surface of the arc-shaped positioning plate 17 is provided with a second movable groove 24 connected to the positioning groove 22 and the first movable groove 23.

[0041] When in use, several groups of nuts 3 are placed in the corresponding positioning grooves 22 respectively. When the arc-shaped positioning plate 17 clamps and fixes the outer side of the shell 2, and the upper surface of the arc-shaped positioning plate 17 is located below the lower flange 16, the clamping mechanism and the head 1 are driven downward by the lifting mechanism. When the head 1 moves down to a certain position, the lower end of the bolt 4 on the head 1 passes through the bolt mounting hole on the lower flange 16 and is pressed and contacted with the upper surface of the nut 3 on the arc-shaped positioning plate 17, thereby pressing and driving the bolt 4 to move upward. When the bolt 4 moves upward, it drives the rotating seat 11 and the fixing plate 9 to move upward, thereby driving the sleeve 6 to rotate and move upward. When the sleeve 6 rotates and moves upward, it is rotatably connected with the fixing plate 9 and squeezes the damping gas spring rod 13 at the same time. When the head 1 continues to move down to a certain position, the head 1 contacts the upper end of the shell 2. , the damping gas spring rod 13 slowly resets and drives the fixed plate 9, the rotating seat 11 and the sleeve 6 to move downward. The sleeve 6 rotates during the downward movement, thereby driving the rotating seat 11 to rotate. The rotating seat 11 drives the bolt 4 to rotate and is threadedly connected with the nut 3. At the same time, the lower end of the bolt 4 passes through the second positioning groove 22, so as to facilitate the rapid assembly of the bolt 4 and the nut 3. When the bolt 4 and the nut 3 are assembled, the driving clamping mechanism is reset and no longer clamps the head 1. At the same time, the arc positioning plate 17 is reset and moved. When the arc positioning plate 17 is reset and moved, the nut 3 is slidably connected with the first moving groove 23, so that the nut 3 is separated from the arc positioning plate 17. At the same time, the second moving groove 24 is used to facilitate the separation of the lower end of the bolt 4 from the arc positioning plate 17, so as to further improve the convenience and efficiency of assembling the head 1 and the shell 2.

[0042] It should be pointed out that a magnet may be provided in the positioning groove 22 of the present invention. When the nut 3 is placed in the positioning groove 22, the nut 3 is magnetically adsorbed to the magnet, thereby ensuring the stability of the nut 3 and preventing the nut 3 from moving.

[0043] In order to facilitate the clamping and fixing of the outer side of the upper flange 25, for example, Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the present invention also includes that the lower end of the head 1 is fixedly connected to an upper flange 25; the clamping mechanism includes a first connecting rod 26 circumferentially distributed on the outside of the sleeve 5, one end of the first connecting rod 26 is fixedly connected to a vertically arranged second connecting rod 27, the lower end of the second connecting rod 27 is fixedly connected to a horizontally arranged hydraulic telescopic rod 28, the output ends of the hydraulic telescopic rod 28 are fixedly connected to arc-shaped clamping plates 29, and the arc-shaped clamping plates 29 correspond to the outer side of the upper flange 25.

[0044] When in use, when the end cap 1 needs to be hoisted, several groups of bolts 4 are vertically placed in the bolt mounting holes on the upper flange 25 to ensure that the upper ends of the bolts 4 correspond to the rotating seat 11, and then several groups of hydraulic telescopic rods 28 are driven to drive the arc clamping plate 29 to move. After the arc clamping plate 29 moves to a certain position, the arc clamping plate 29 is squeezed and contacted with the outer side of the upper flange 25, and the outer side of the upper flange 25 is clamped and fixed by the arc clamping plate 29, and then the sleeve 5 is driven to move upward by the hoisting mechanism. When the sleeve 5 moves upward, the upper flange 25 and the end cap 1 are driven to move upward synchronously by the first connecting rod 26, the second connecting rod 27, and the arc positioning rod, so as to facilitate the hoisting of the end cap 1;

[0045] When the head 1 moves to the top of the shell 2, the sleeve 5 and the head 1 are driven downward by the lifting mechanism. When the head 1 moves downward to a certain position, the lower end of the bolt 4 on the upper flange 25 passes through the bolt mounting hole on the lower flange 16 and is pressed and contacted with the upper surface of the nut 3 on the arc-shaped positioning plate 17, thereby pressing and driving the bolt 4 to move upward. When the bolt 4 moves upward, it drives the rotating seat 11 and the fixed plate 9 to move upward, thereby driving the sleeve 6 to rotate and move upward. When the sleeve 6 rotates and moves upward, it is connected to the fixed plate 9 and squeezes the damping gas spring rod at the same time. 13. When the head 1 continues to move down to a certain position, the head 1 contacts the upper end of the shell 2, and the damping gas spring rod 13 slowly resets and drives the fixed plate 9, the rotating seat 11 and the sleeve 6 to move down. The sleeve 6 rotates during the downward movement, and the teeth 15 on the inner side of the sleeve 6 are meshed with the one-way gear 14 to drive, thereby driving the rotating seat 11 to rotate. The rotating seat 11 drives the bolt 4 to move up and squeezes to drive the rotating seat 11 to rotate, so that the bolt 4 is threadedly connected with the nut 3 when it rotates, so as to facilitate the rapid assembly of the bolt 4 and the nut 3.

[0046] For example, Figure 1 The present invention further includes a conveying platform 30 for conveying the shell 2 , on which a plurality of groups of vertically arranged shells 2 are arranged; and the support seats 20 are arranged on both sides of the conveying platform 30 .

[0047] During use, the shell 2 is conveniently transported by relying on the conveying platform 30. When the shell 2 is transported to a certain position, the conveying platform 30 is closed, and the shell 2 is clamped and fixed by relying on the arc-shaped positioning plate 17 on the support seat 20, so as to ensure the stability of the shell 2 when the shell 2 and the head 1 are assembled; when the shell 2 and the head 1 are assembled, the conveying platform 30 is opened again, so as to facilitate the next group of shells 2 to be moved between the two groups of support seats 20, and to facilitate the assembly of the head 1 for the next group of shells 2, so as to improve the convenience of assembling the shell 2 and the head 1.

[0048] For example, Figure 1 , Figure 4 As shown, the present invention also includes that the hoisting mechanism includes a conveying track 31 horizontally arranged above the conveying platform 30, and a horizontally arranged electric slider 32 is slidably connected to the conveying track 31, and both ends of the conveying track 31 are fixedly connected with vertically arranged columns 33, and the lower surface of the electric slider 32 is fixedly connected with an electric telescopic rod 34, the fixed end of the electric telescopic rod 34 is fixedly connected to the lower surface of the electric slider 32, and the output end of the electric telescopic rod 34 is rotatably connected to the upper surface of the sleeve 5.

[0049] When in use, drive several groups of hydraulic telescopic rods 28 to drive the arc clamping plate 29 to move. After the arc clamping plate 29 clamps and fixes the outer side of the upper flange 25, the electric telescopic rod 34 is used to drive the sleeve 5 to move upward. When the sleeve 5 moves to a certain position, the electric slider 32 and the conveying track 31 drive the electric telescopic rod 34 to move. When the electric telescopic rod 34 moves a certain distance, the end cap 1 is located above the shell 2. Then, the output end of the electric telescopic rod 34 is driven to move downward, thereby driving the sleeve 5 to move downward, so as to facilitate the assembly of the end cap 1 and the shell 2 and improve the convenience of assembly.

[0050] The overall stability of the conveying track 31 can be ensured by relying on the upright posts 33 .

[0051] For example, Figure 1 , Figure 2 As shown, the present invention also includes that a horizontally arranged second pneumatic telescopic rod 35 is provided on the column 33, the fixed end of the second pneumatic telescopic rod 35 is fixedly connected to one side of the column 33, the output end of the second pneumatic telescopic rod 35 is fixedly connected to a first extrusion plate 36, the fixed end of the electric telescopic rod 34 is fixedly connected to a cross bar 37 on the outside, one end of the cross bar 37 is fixedly connected to a vertically arranged second extrusion plate 38, the second extrusion plate 38 corresponds to the first extrusion plate 36, and the fixed end of the second pneumatic telescopic rod 35 is connected to the fixed end of the first pneumatic telescopic rod 19 through a pipeline.

[0052] When in use, the electric slider 32 drives the electric telescopic rod 34, the sleeve 5 and the head 1 to move to a certain position. At this time, the second extrusion plate 38 on the outside of the electric telescopic rod 34 is squeezed and contacted with the first extrusion plate 36. When the second pneumatic telescopic rod 35 is squeezed, the output end of the first pneumatic telescopic rod 19 is driven to extend through the pipeline. The first pneumatic telescopic rod 19 drives the arc positioning plate 17 to move and clamp and fix the outside of the shell 2. In this way, after the head 1 moves to a certain position, the first pneumatic telescopic rod 19 and the arc positioning plate 17 are automatically driven to clamp and fix the shell 2, thereby further improving the assembly convenience between the shell 2 and the head 1.

[0053] Exemplarily, the present invention also includes that the inner sides of the arc-shaped clamping plate 29 and the arc-shaped positioning plate 17 are both provided with anti-slip pads.

[0054] When in use, the anti-skid pad can ensure the clamping stability of the arc-shaped clamping plate 29 on the upper flange 25, and at the same time, the clamping stability of the arc-shaped positioning plate 17 on the lower flange 16 can be ensured.

[0055] For example, Figure 1 , Figure 2As shown, the present invention also includes that an inclined reinforcing rod 39 is fixedly connected between the column 33 and the conveying track 31 ; and a reinforcing rib 40 is fixedly connected to the side of the support seat 20 away from the arc-shaped positioning plate 17 .

[0056] When in use, the reinforcing rod 39 can further ensure the stability between the conveying track 31 and the column 33, and the clamping rib can further ensure the overall stability of the support base 20.

[0057] When the present invention is in use, when it is necessary to hoist the end cap 1, several groups of bolts 4 are vertically placed in the bolt mounting holes on the upper flange 25 to ensure that the upper ends of the bolts 4 correspond to the rotating seat 11, and then several groups of hydraulic telescopic rods 28 are driven to drive the arc clamping plate 29 to move. After the arc clamping plate 29 moves to a certain position, the arc clamping plate 29 is squeezed and contacted with the outer side of the upper flange 25, and the outer side of the upper flange 25 is clamped and fixed by the arc clamping plate 29, and then the sleeve 5 is driven to move upward by the electric telescopic rod 34. When the sleeve 5 moves upward, the upper flange 25 and the end cap 1 are driven to move upward synchronously by the first connecting rod 26, the second connecting rod 27, and the arc positioning rod, so as to facilitate the hoisting of the end cap 1;

[0058] A plurality of groups of nuts 3 are placed in the corresponding positioning grooves 22 respectively, and the electric slider 32 and the conveying track 31 are used to drive the electric telescopic rod 34 to move. When the electric telescopic rod 34 moves a certain distance, the second extrusion plate 38 on the outer side of the electric telescopic rod 34 is squeezed and contacted with the first extrusion plate 36. When the second pneumatic telescopic rod 35 is squeezed, the output end of the first pneumatic telescopic rod 19 is driven to extend through the pipeline. The arc positioning plate 17 is driven by the first pneumatic telescopic rod 19 to move and clamp and fix the outer side of the shell 2. At the same time, the upper surface of the arc positioning plate 17 is located below the lower flange 16. At the same time, the nuts 3 on the arc positioning plate 17 correspond to the bolt mounting holes on the lower flange 16, so as to ensure the stability of the shell 2.

[0059] When the head 1 is located above the shell 2, the output end of the electric telescopic rod 34 is driven to move downward, thereby driving the sleeve 5 and the head 1 to move downward. After the head 1 moves down to a certain position, the lower end of the bolt 4 on the upper flange 25 passes through the bolt mounting hole on the lower flange 16 and is pressed and contacted with the upper surface of the nut 3 on the arc-shaped positioning plate 17, thereby pressing and driving the bolt 4 to move upward. When the bolt 4 moves upward, the upper end of the bolt 4 first moves into the corresponding polygonal groove 12. As it continues to move downward, the bolt 4 presses the polygonal groove 12 and the rotating seat 11. When the rotating seat 11 moves upward, it drives the fixed plate 9 and the sleeve 6 to move upward. When the sleeve 6 moves upward, it relies on the guide block 8 to slide with the spiral guide groove 7, thereby driving the sleeve 6 to rotate and move upward. When the sleeve 6 rotates and moves upward, it is connected to the fixed plate 9 and rotates, and at the same time squeezes the damping gas spring rod 13, so as to avoid the bolt 4 and the nut 3 from being damaged by rigid contact. Relying on the one-way gear 14, it can avoid driving the rotating seat 11 to rotate, thereby ensuring the stability of the bolt 4;

[0060] When the head 1 continues to move down to a certain position, the head 1 contacts the upper end of the shell 2, and the lower surface of the upper flange 25 contacts the upper surface of the lower flange 16. The damping gas spring rod 13 slowly resets and drives the fixed plate 9, the rotating seat 11 and the sleeve 6 to move down. The sleeve 6 rotates during the downward movement, and the teeth 15 on the inner side of the sleeve 6 are meshed with the one-way gear 14 to drive, thereby driving the rotating seat 11 to rotate. The rotating seat 11 drives the bolt 4 to move up and squeezes the rotating seat 11 to rotate, so that the bolt 4 is threadedly connected with the nut 3 when it rotates, so as to facilitate the rapid assembly of the bolt 4 and the nut 3. There is no need to manually install the bolt 4 and the nut 3 one by one. All the bolts 4 and the nuts 3 can be assembled at one time, thereby completing the assembly of the head 1 and the shell 2.

[0061] When the bolt 4 and the nut 3 are assembled, the arc-shaped clamping plate 29 is driven to no longer clamp the head 1, and the sleeve 5 is driven to move up by the electric telescopic rod 34, so as to facilitate the subsequent assembly of the bolts 4 and nuts 3 on the next group of head 1 and shell 2; when the electric slider 32 is reset and moved, it no longer squeezes the second pneumatic telescopic rod 35. At this time, the first pneumatic telescopic rod 19 is reset and moved, so that the arc-shaped positioning plate 17 no longer clamps the shell 2, and the arc-shaped positioning plate 17 is reset and moved. When the arc-shaped positioning plate 17 is reset and moved, the nut 3 is slidably connected with the first moving groove 23, so that the nut 3 is separated from the arc-shaped positioning plate 17, and the second moving groove 24 is relied on to facilitate the lower end of the bolt 4 to separate from the arc-shaped positioning plate 17, so as to further improve the convenience and assembly efficiency of the head 1 and the shell 2 assembly; at this time, the conveying platform 30 can be opened again, the next group of shells 2 are moved between the two groups of support seats 20, and the head 1 assembly of the next group of shells 2 is convenient, so as to improve the convenience of assembling the shell 2 and the head 1.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A semi-automatic assembly line for high-pressure water heaters, characterized in that: The invention comprises a lifting mechanism for lifting a head (1) above a shell (2), and a clamping and positioning mechanism arranged on both sides of the shell (2) for clamping and positioning the shell (2) and providing an assembly nut (3) for the shell (2); a clamping mechanism for clamping the head (1) and an extrusion and rotation structure for automatically twisting a bolt (4) arranged on the head (1) after the head (1) and the top of the shell (2) come into contact are connected below the lifting mechanism.

2. A semi-automatic assembly production line for a high-pressure water heater according to claim 1, characterized in that: The extrusion rotation structure comprises a sleeve (5) with an opening facing downward, and a sleeve (6) rotatably connected to the inside of the sleeve (5); a spiral guide groove (7) is provided on the inner wall of the sleeve (5); a guide block (8) slidably connected to the spiral guide groove (7) is fixedly connected to the outer side of the sleeve (6); a horizontally arranged fixing plate (9) is rotatably connected to the lower end of the sleeve (6); a plurality of groups of mounting holes (10) corresponding to the bolts (4) are distributed circumferentially on the fixing plate (9); a rotating seat (11) is rotatably connected in each of the mounting holes (10); a polygonal groove (12) is provided on the lower surface of each of the rotating seats (11); a plurality of groups of vertically arranged damping gas spring rods (13) are connected between the fixing plate (9) and the sleeve (5); and the rotating seat (11) is meshed and transmitted with teeth (15) arranged on the inner side of the sleeve (6) through a one-way gear (14).

3. A semi-automatic assembly line for a high-pressure water heater according to claim 2, characterized in that: The upper end of the shell (2) is fixedly connected to a lower flange (16), and the clamping and positioning mechanism includes arc-shaped positioning plates (17) arranged on both sides of the top of the shell (2), and the arc-shaped positioning plates (17) are clamped at the lower part of the lower flange (16). The lower surface of the arc-shaped positioning plates (17) is fixedly connected to a vertically arranged connecting plate (18), and the side of the connecting plate (18) away from the shell (2) is fixedly connected to a horizontally arranged first pneumatic telescopic rod (19), and the fixed ends of the first pneumatic telescopic rod (19) are connected to a vertically arranged support seat (20), and a positioning telescopic rod (21) is fixedly connected between the support seat (20) and the arc-shaped positioning plate (17).

4. A semi-automatic assembly line for a high-pressure water heater according to claim 3, characterized in that: The clamping positioning mechanism further comprises a plurality of groups of positioning grooves (22) arranged on the arc-shaped positioning plate (17), nuts (3) are placed in each of the positioning grooves (22), a first movable groove (23) connected to the positioning groove (22) is provided on one side of the arc-shaped positioning plate (17) close to the shell (2), and a second movable groove (24) connected to the positioning groove (22) and the first movable groove (23) is provided on the lower surface of the arc-shaped positioning plate (17).

5. A semi-automatic assembly line for a high-pressure water heater according to claim 4, characterized in that: The lower end of the sealing head (1) is fixedly connected to an upper flange (25); the clamping mechanism comprises a first connecting rod (26) circumferentially distributed on the outer side of the sleeve (5); one end of the first connecting rod (26) is fixedly connected to a vertically arranged second connecting rod (27); the lower end of the second connecting rod (27) is fixedly connected to a horizontally arranged hydraulic telescopic rod (28); the output ends of the hydraulic telescopic rods (28) are fixedly connected to arc-shaped clamping plates (29); the arc-shaped clamping plates (29) correspond to the outer side of the upper flange (25).

6. A semi-automatic assembly line for a high-pressure water heater according to claim 5, characterized in that: It also comprises a conveying platform (30) for conveying the shells (2), wherein a plurality of groups of vertically arranged shells (2) are arranged on the conveying platform (30); and the support seat (20) is arranged on both sides of the conveying platform (30).

7. A semi-automatic assembly line for a high-pressure water heater according to claim 6, characterized in that: The hoisting mechanism comprises a conveying track (31) horizontally arranged above the conveying platform (30), a horizontally arranged electric slider (32) being slidably connected to the conveying track (31), vertically arranged columns (33) being fixedly connected at both ends of the conveying track (31), an electric telescopic rod (34) being fixedly connected to the lower surface of the electric slider (32), a fixed end of the electric telescopic rod (34) being fixedly connected to the lower surface of the electric slider (32), and an output end of the electric telescopic rod (34) being rotatably connected to the upper surface of the sleeve (5).

8. A semi-automatic assembly line for a high-pressure water heater according to claim 7, characterized in that: The column (33) is provided with a second pneumatic telescopic rod (35) arranged horizontally, the fixed end of the second pneumatic telescopic rod (35) is fixedly connected to one side of the column (33), the output end of the second pneumatic telescopic rod (35) is fixedly connected to a first extrusion plate (36), the fixed end of the electric telescopic rod (34) is fixedly connected to a cross bar (37) on the outside, one end of the cross bar (37) is fixedly connected to a second extrusion plate (38) arranged vertically, the second extrusion plate (38) corresponds to the first extrusion plate (36), and the fixed end of the second pneumatic telescopic rod (35) is connected to the fixed end of the first pneumatic telescopic rod (19) through a pipeline.

9. A semi-automatic assembly line for a high-pressure water heater according to claim 8, characterized in that: Anti-slip pads are provided on the inner sides of the arc-shaped clamping plate (29) and the arc-shaped positioning plate (17).

10. A semi-automatic assembly line for a high-pressure water heater according to claim 9, characterized in that: An inclined reinforcing rod (39) is fixedly connected between the upright column (33) and the conveying track (31); and a reinforcing rib (40) is fixedly connected to the side of the support seat (20) away from the arc-shaped positioning plate (17).

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