Double-layer thermos flask liner welding device and welding method

Abstract

The present invention discloses a double-layer thermos flask liner welding device relating to the technical field of thermos flask production, comprising a base, a welding gun is arranged at the rear of the base, a loading plate is fixedly connected to the top of the base, the top of the loading plate is inclined, a pressing plate is arranged above the loading plate, the top of the base is rotatably connected to a support, a cross bar and a limit bar are driven to move by a driving group, and then a bottom film is pushed and loaded by a pushing piece, and manual placement is not required, thereby reducing labor intensity and frequent manual adjustments, and after the pushing piece is loaded, the pressing rod will press down the pressing plate, thereby pressing down the bottom film of the inner circle of the support through the pressing plate, so that the inclined bottom film can tend to be horizontal, and then the driving group drives the pushing piece to reset, and then the driving group drives the inner liner and the bottom film to rotate, thereby completing welding, so that the welding quality can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of thermos bottle production, in particular to a double-layer thermos bottle liner welding device and a welding method thereof. Background Art

[0002] During the production process of the double-layer thermos, the inner liner and the outer liner need to be processed. When processing the inner liner, the stainless steel tube needs to be processed into the shape of the inner liner. Because the inner liner has no bottom after processing and forming, it is necessary to weld the bottom of the inner liner to the bottom film first; when welding the bottom of the inner liner, the bottom film is generally placed on the support of the processing table, and then the inner liner is placed on the bottom film by hand, and then the upper part of the inner liner is pressed by the upper cylinder for welding, but when the bottom film is manually placed on the support, the bottom film cannot be horizontally inside the support, which is easy to cause the bottom film to tilt, and the arm of the staff will also exert a certain gravity on the inner liner during the action of placing the inner liner on the bottom film, which is more likely to cause the bottom film to tilt. At this time, manual adjustment is required, and the position of the weld between the bottom film and the inner liner is judged by the naked eye to see whether there is a large inclination between the welding gun on the side, and it usually requires multiple and long adjustments, which is time-consuming and labor-intensive, inefficient, and easy to affect the welding quality of the bottom film and the inner liner.

[0003] Based on this, the present invention designs a double-layer thermos flask liner welding device and a welding method thereof to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a double-layer thermos flask liner welding device and a welding method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a double-layer thermos flask liner welding device, comprising a base, a welding gun is arranged at the rear of the base, a feeding plate is fixedly connected to the top of the base, the top of the feeding plate is inclined, a pressing plate is arranged above the feeding plate, a support is rotatably connected to the top of the base, and a feeding group is arranged on both sides of the pressing plate;

[0006] The loading group includes a limit rod, a rectangular groove, a second spring, a pressure rod and a fixing rod, the fixing rod is wedge-shaped, the fixing rod is fixedly connected to the top of the base, the limit rod is slidably connected to the right side wall of the loading plate in the front and rear directions, the rectangular groove is opened on the right side wall of the loading plate, the limit rod is slidably connected to a push piece, the bottom end of the push piece is slidably connected to the inside of the rectangular groove, a top plate is arranged under the limit rod, and the top plate is slidably connected to the loading plate in the vertical direction; the top plate is fixedly connected to a first spring for resetting the top plate, the limit rod is fixedly connected to a vertical rod, the vertical rod is slidably connected to the base, the pressure plate is slidably connected to the vertical rod, the second spring is fixedly connected between the pressure plate and the vertical rod, the limit rod is fixedly connected to a cross rod, and the cross rod is slidably connected to an L-shaped rod; the L-shaped rod is fixedly connected to a third spring for resetting the L-shaped rod, the rear end of the L-shaped rod is wedge-shaped, the pressure rod is rotatably connected to the fixing rod, the pressure rod is used to press the pressure plate downward, and the rotating shaft sleeve of the pressure rod is connected with a torsion spring;

[0007] A driving group is arranged above the two feeding groups, and the driving group can drive the two L-shaped plates to move backward and drive the supporting member to rotate while clamping the inner liner of the thermos bottle.

[0008] As a further solution of the present invention, the driving group includes a cross plate and a motor, the cross plate is slidably connected to the two fixed rods, the cross plate is fixedly connected to two first rack rods, the two first rack rods are meshed with first gears, the two first gears are respectively rotatably connected to the two fixed rods, the two first gears are fixedly connected to driving rods, the two driving rods are respectively rotatably connected to the two fixed rods, the bottom ends of the two driving rods are respectively located inside the two cross rods, the motor is fixedly connected to the bottom of the cross plate, and the output shaft of the motor is fixedly connected to a turntable;

[0009] The driving group also includes a linear driving group and a clamping group. The clamping group is used to clamp the inner liner of the thermos bottle, and the linear driving group is used to drive the horizontal plate to rise and fall.

[0010] As a further solution of the present invention, the clamping group includes two connecting rods, the two connecting rods are symmetrically arranged about the motor, the two connecting rods are fixedly connected with a sixth spring for resetting the two connecting rods, and the two connecting rods are slidably connected with a second rack rod; the two second rack rods are fixedly connected with a fourth spring for resetting the two second rack rods, the two second rack rods are fixedly connected with an arc-shaped piece, the two second rack rods are meshed with a second gear, the two second gears are respectively rotatably connected to the two connecting rods, and the two second rack rods are slidably connected with a support piece; the two second gears are meshed with a third rack rod, the two support pieces are fixedly connected with a fifth spring for resetting the two third rack rods, and the two third rack rods are fixedly connected to the fixed rod.

[0011] As a further solution of the present invention, both of the two support sheets are provided with accommodating grooves.

[0012] As a further solution of the present invention, the inner walls of the two arc-shaped sheets are rotatably connected to a plurality of rollers.

[0013] As a further solution of the present invention, a rubber layer is glued to the bottom of the turntable.

[0014] As a further solution of the present invention, the linear drive group includes two cylinders, and the two cylinders are fixedly connected between the base and the cross plate.

[0015] A method for welding a double-layer thermos flask liner, the method comprising the following steps:

[0016] Step 1: The cylinder drives the horizontal plate to rise, and then the two support plates move closer to each other, and the two arc plates move away from each other:

[0017] Step 2: The two first gears are meshed with the first rack rod, so that the cross bar is moved through the driving rod, and then the push film pushes the bottom film to be loaded;

[0018] Step 3: The L-shaped rod and the pressure rod make the pressure rod press down the pressure plate, so that the film tends to be horizontal;

[0019] Step 4: Place the inner liner of the thermos bottle to be welded on the receiving groove on the support plate, and when the cylinder drives the horizontal plate to descend, the two arc-shaped plates clamp the inner liner of the thermos bottle;

[0020] Step 5: When the horizontal plate descends, the horizontal bar is reset, and when the horizontal plate descends to the limit position, the rubber layer at the bottom of the turntable contacts the inner liner of the thermos bottle. When the motor drives the support and the bottom film to rotate, the roller can reduce friction, thereby completing the welding;

[0021] Step 6: Repeat the above steps.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The driving group drives the cross bar and the limit rod to move, and then the push piece is used to push the film for loading. It does not need to be placed manually, reducing the labor intensity and frequent manual adjustments. After the push piece is loaded, the pressure rod will press down the pressure plate, thereby pressing down the film on the inner circle of the support through the pressure plate, so that the inclined film can tend to be horizontal, and then the driving group drives the push piece to reset, and then the driving group drives the inner liner and the film to rotate, thereby completing the welding, so that the welding quality can be guaranteed.

[0024] 2. The method of clamping the thermos flask liner by the clamping group and then conveying it to the top of the film instead of the manual placement method can prevent the film from being tilted again when it contacts the thermos flask liner due to the tilt of the staff's arm, etc.

[0025] 3. The feeding group can automatically feed the film, thereby reducing the labor intensity of manual labor, and the clamping group can also prevent the film from being separated from the inner liner of the thermos flask when the turntable contacts the top of the thermos flask, thereby preventing the worker's arm from being pressed, thereby reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a side view of the feeding group of the present invention;

[0028] Figure 3 It is a schematic diagram of the connection relationship between the compression rod and the torsion spring of the present invention;

[0029] Figure 4 It is a schematic diagram of the positional relationship between the loading plate and the supporting member of the present invention;

[0030] Figure 5 It is a side view of the connection relationship between the push piece and the limit rod of the present invention;

[0031] Figure 6 It is a schematic diagram of the connection relationship and position relationship between the vertical rod and the pressing plate of the present invention;

[0032] Figure 7 It is a side view of the top plate and the limiting rod of the present invention;

[0033] Figure 8 It is a schematic diagram of the positional relationship between the first rack rod, the first gear and the cross plate of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the clamping group of the present invention;

[0035] Fig.10 for Fig. 9 A partial enlarged view of the middle part;

[0036] 11 is a schematic diagram of the connection relationship between the support plate and the second rack rod of the present invention;

[0037] Fig.12 A schematic diagram of the connection relationship between the roller and the arc-shaped piece of the present invention;

[0038] Fig.13 It is a flow chart of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0040] 1. Base; 2. Welding gun; 3. Loading plate; 4. Limit rod; 5. Rectangular groove; 6. Top plate; 7. First spring; 8. Pressure plate; 9. Vertical rod; 10. Second spring; 11. Cross rod; 12. L-shaped rod; 13. Third spring; 14. Pressure rod; 15. Fixed rod; 16. Torsion spring; 17. Support member; 18. Cross plate; 19. First rack rod; 20. First gear; 21. Driving rod; 22. Motor; 23. Turntable; 24. Connecting rod; 25. Second rack rod; 26. Fourth spring; 27. Second gear; 28. Arc sheet; 29. ​​Support sheet; 30. Fifth spring; 31. Accommodating groove; 32. Sixth spring; 33. Roller; 34. Cylinder; 35. Push sheet; 36. Third rack rod. DETAILED DESCRIPTION

[0041] See also Figure 1-13 The present invention provides a technical solution: a double-layer thermos flask liner welding device, comprising a base 1, a welding gun 2 is arranged at the rear of the base 1, a feeding plate 3 is fixedly connected to the top of the base 1, the top of the feeding plate 3 is inclined, a pressing plate 8 is arranged above the feeding plate 3, a support 17 is rotatably connected to the top of the base 1, and a feeding group is arranged on both sides of the pressing plate 8;

[0042] The feeding group includes a limit rod 4, a rectangular groove 5, a second spring 10, a pressure rod 14 and a fixed rod 15. The fixed rod 15 is wedge-shaped and fixedly connected to the top of the base 1. The limit rod 4 is slidably connected to the right side wall of the feeding plate 3 in the front-to-back direction. The rectangular groove 5 is opened on the right side wall of the feeding plate 3. The limit rod 4 is slidably connected with a push piece 35. The bottom end of the push piece 35 is slidably connected to the inside of the rectangular groove 5. A top plate 6 is arranged below the limit rod 4. The top plate 6 is slidably connected to the feeding plate 3 in the vertical direction; the top plate 6 is fixedly connected with a push piece 35 for its replication. The first spring 7 of the position, the limit rod 4 is fixedly connected with the vertical rod 9, the vertical rod 9 is slidably connected with the base 1, the pressure plate 8 is slidably connected with the vertical rod 9, the second spring 10 is fixedly connected between the pressure plate 8 and the vertical rod 9, the limit rod 4 is fixedly connected with the cross bar 11, and the cross bar 11 is slidably connected with the L-shaped rod 12; the L-shaped rod 12 is fixedly connected with the third spring 13 for its reset, the rear end of the L-shaped rod 12 is wedge-shaped, the pressure rod 14 is rotatably connected with the fixed rod 15, the pressure rod 14 is used to press the pressure plate 8 downward, and the rotating shaft of the pressure rod 14 is sleeved with a torsion spring 16;

[0043] A driving group is arranged above the two feeding groups, and the driving group can drive the two L-shaped plates 12 to move backward and drive the supporting member 17 to rotate while clamping the inner liner of the thermos bottle.

[0044] When the above scheme is put into actual use, before use, the film is first placed on the loading plate 3. Because the loading plate 3 is tilted, when the film is placed, it will slide to the rear of the base 1, and the push pieces 35 are located on both sides in front of the rearmost film. Then the driving group is started. When the driving group works, it will push the two L-shaped rods 12 to move backward along the cross bar 11. Because the limit rod 4 is slidably connected with the rectangular groove 5, and the first spring 7 is in a compressed state at this time, when the L-shaped rod 12 moves backward, the limit rod 4 and the cross bar 11 will be pushed backward through the third spring 13. When the limit rod 4 moves backward, it will drive the push piece 35 to move. When the two push pieces 35 move backward, they will push the rearmost film of the loading plate 3 backward. The inner circle above the supporting member 17 moves, and the bottom end of the limiting rod 4 will be separated from the bottom of the top plate 6 after moving a certain distance. At this time, the first spring 7 will be elastically relaxed and will tend to push the top plate 6 upward, but the bottom of the push piece 35 is still in the horizontal plane of the rectangular groove 5, so the top plate 6 cannot push the push piece 35 up. However, when the bottom film enters the inner circle of the supporting member 17, the limiting rod 4 also slides to the vertical plane position at the rear of the rectangular groove 5. At this time, the first spring 7 will push the push piece 35 upward through the top plate 6, so that the push piece 35 slides upward to the limit position along the limiting rod 4. At this time, the bottom end of the push piece 35 is higher than the top end of the bottom film, and the bottom film behind the loading plate 3 will slide backward along the loading plate 3.

[0045] When the limit rod 4 slides backward, it will also drive the vertical rod 9 to slide along the base 1. When the vertical rod 9 slides, it will drive the pressure plate 8 to move. When the push piece 35 pushes the bottom plate to the inner circle of the support member 17, the limit rod 4 also moves to the limit position. At this time, the pressure plate 8 is above the support member 17. Because the bottom plate will be tilted after entering the inner circle of the support member 17, the driving group will continue to push the L-shaped rod 12. Because the limit rod 4 has slid to the limit position, the driving group pushes the L-shaped rod 12 to compress the third spring 13 and will not cause the cross bar 11 and the limit rod 4 to continue to move. When the third spring 13 is compressed, the L-shaped rod 12 will move When the L-shaped rod 12 moves backward again, its wedge-shaped rear end will contact the end of the pressure rod 14 and push the end of the pressure rod 14 upward, so that the pressure rod 14 rotates around the fixed rod 15 and compresses the torsion spring 16. At this time, the end of the pressure rod 14 close to the pressure plate 8 will drop and press down the side of the pressure plate 8. After being pressed down by the pressure rod 14, the pressure plate 8 will slide downward along the vertical rod 9 and compress the second spring 10. When the pressure plate 8 slides downward, it will press down the bottom film of the inner circle of the support member 17, so that the inclined bottom film can be adjusted in angle after receiving the pressure from the pressure plate 8, so that the bottom film is in a horizontal position;

[0046] After the limit rod 4 moves to the limit position, the top plate 6 will push up the push piece 35, so that the limit rod 4 will move back to the limit position, and the push piece 35 will move back along the horizontal groove above the rectangular groove 5 to prevent the push piece 35 from being blocked by the bottom film at the rear when moving back. When the limit rod 4 moves back to the initial position, the push piece 35 will move down from the vertical groove at the front of the rectangular groove 5 to the initial position, so as to facilitate the next push and loading of the bottom film. When the inner liner of the thermos flask drops onto the bottom film, the drive group will drive the inner liner of the thermos flask and the support member 17 to rotate, and then the welding position is welded by the welding gun 2 while the support member 17 and the inner liner of the thermos flask rotate.

[0047] After welding is completed, the driving assembly will drive the welded liner and bottom film to rise, and drive the cross bar 11 to move backward again, so as to load the bottom film again;

[0048] The driving group drives the cross bar 11 and the limit rod 4 to move, and then the push piece 35 is used to push the film for loading. There is no need for manual placement, which reduces the labor intensity and frequent manual adjustments. After the push piece 35 is loaded, the pressure rod 14 will press down the pressure plate 8, thereby pressing down the film on the inner circle of the support member 17 through the pressure plate 8, so that the inclined film can tend to be horizontal, and then the driving group drives the push piece 35 to reset, and then the driving group drives the inner liner and the film to rotate, thereby completing the welding, so that the welding quality can be guaranteed.

[0049] As a further solution of the present invention, the driving group includes a transverse plate 18 and a motor 22, the transverse plate 18 is slidably connected to the two fixed rods 15, the transverse plate 18 is fixedly connected to two first rack rods 19, the two first rack rods 19 are meshed with first gears 20, the two first gears 20 are respectively rotatably connected to the two fixed rods 15, the two first gears 20 are fixedly connected to a driving rod 21, the two driving rods 21 are respectively rotatably connected to the two fixed rods 15, the bottom ends of the two driving rods 21 are respectively located inside the two transverse rods 11, the motor 22 is fixedly connected to the bottom of the transverse plate 18, and the output shaft of the motor 22 is fixedly connected to a turntable 23;

[0050] The driving group further comprises a linear driving group and a clamping group, wherein the clamping group is used for clamping the inner liner of the thermos bottle, and the linear driving group is used for driving the horizontal plate 18 to rise and fall.

[0051] When the above-mentioned driving group is working, the cross plate 18 is at the bottom when not working, and then the linear driving group drives the cross plate 18 to rise. When the cross plate 18 rises, it will drive the motor 22 and the first rack rod 19 to rise. After the first rack rod 19 rises to a position meshing with the first gear 20, the first gear 20 will drive the driving rod 21 to rotate. When the driving rod 21 rotates, its bottom end will rotate backward along the cross bar 11 and push the L-shaped rod 12 to move, so that the cross bar 11 and the limit rod 4 move backward, and then the push piece 35 loads the bottom film. When the cross plate 18 rises to the limit position, the thermos flask liner and the bottom film that have been welded are removed from the clamping group, and then replaced with a new one. The thermos flask liner to be welded, and then the linear drive group drives the cross plate 18 to descend. At this time, the first rack rod 19 is meshed with the first gear 20 again, so that the drive rod 21 and the push piece 35 are reset. When the cross plate 18 is lowered to the limit position again, the clamping group also places the thermos flask liner on the bottom film. At this time, the turntable 23 is at the top of the thermos flask liner clamped by the clamping group, and the turntable 23 also applies a certain pressure to the thermos flask liner, so that the thermos flask liner is in close contact with the bottom film, and then the motor 22 is started. The motor 22 drives the turntable 22 to rotate, so that the support 17 and the bottom film rotate, and then the welding gun 2 welds the weld between the two.

[0052] As a further solution of the present invention, the clamping group includes two connecting rods 24, the two connecting rods 24 are symmetrically arranged about the motor 22, the two connecting rods 24 are fixedly connected with a sixth spring 32 for resetting them, and the two connecting rods 24 are slidably connected with a second rack rod 25; the two second rack rods 25 are fixedly connected with a fourth spring 26 for resetting them, the two second rack rods 25 are fixedly connected with an arc piece 28, the two second rack rods 25 are meshed with a second gear 27, the two second gears 27 are respectively rotatably connected to the two connecting rods 24, and the two second rack rods 25 are slidably connected with a support piece 29; the two second gears 27 are meshed with a third rack rod 36, the two support pieces 29 are fixedly connected with a fifth spring 30 for resetting them, and the two third rack rods 36 are fixedly connected to the fixed rod 15.

[0053] When the above-mentioned clamping group is working, when the linear drive group drives the cross plate 18 to be at the highest point, the two arc-shaped pieces 28 are away from each other, and the two support pieces 29 are close to each other. At this time, the thermos flask liner to be welded is placed between the two support pieces 29, and then the linear drive group drives the cross plate 18 to descend. When the cross plate 18 descends, it will slide and descend along the fixed rod 15. When the cross plate 18 descends, it drives the connecting rod 24 to descend. When the connecting rod 24 descends, the second gear 27 will mesh with the third rack rod 36. When the second gear 27 rotates, it will drive the second rack rod 25 to slide along the connecting rod 24. When the second rack rod 25 slides, the elastic force of the fourth spring 26 is gradually released, and the two arc-shaped pieces 28 are also gradually close to each other until the two arc-shaped pieces 28 clamp the thermos flask liner. After clamping, the second gear 27 is disengaged from the third rack rod 36. Because the fixing rod 15 is wedge-shaped, when the two arc-shaped pieces 28 clamp the thermos flask liner, the end of the support piece 29 also slides to the lower part of the fixing rod 15. At this time, the elastic force of the two fifth springs 30 is also released. At this time, the two support pieces 29 are away from the bottom of the thermos flask liner, and then the cross plate 18 continues to be driven down by the linear drive group. When the thermos flask liner contacts the bottom film, the two connecting rods 24 will compress the sixth spring 32, and the thermos flask liner is buffered by the elastic compression of the sixth spring 32. At this time, the turntable 23 also contacts the top of the thermos flask liner, and then the motor 22 is started. The motor 22 drives the turntable 23 to rotate, thereby rotating the support member 17 and the bottom film, thereby facilitating the welding of the welding gun 2;

[0054] After welding is completed, the linear drive group drives the cross plate 18 to rise, and then the first rack rod 19 engages with the first gear 20. At this time, the drive rod 21 drives the cross bar 11 to move, and then the bottom film is loaded. When the cross plate 18 rises to the limit position, the two support plates 29 move to the bottom of the welded thermos flask liner, and then the two arc-shaped plates 28 unfold, and then the welded thermos flask liner is removed and replaced with a new one.

[0055] As a further solution of the present invention, both of the two support sheets 29 are provided with a receiving groove 31 .

[0056] When the above solution is in operation, the accommodating groove 31 can support and restrict the inner liner of the thermos flask when the inner liner of the thermos flask is placed on the two supporting sheets 29 .

[0057] As a further solution of the present invention, the inner walls of the two arc-shaped pieces 28 are rotatably connected to a plurality of rollers 33 .

[0058] When the above solution is in operation, the roller 33 can reduce friction when the inner liner of the thermos bottle rotates.

[0059] As a further solution of the present invention, a rubber layer is glued to the bottom of the rotating disk 23 .

[0060] When the above solution is working, the rubber layer can increase the friction, making it easier for the turntable 23 to drive the inner liner of the thermos bottle to rotate.

[0061] As a further solution of the present invention, the linear drive group includes two cylinders 34 , and the two cylinders 34 are fixedly connected between the base 1 and the cross plate 18 .

[0062] When the linear drive group is working, the cylinder 34 facilitates the lifting and lowering of the horizontal plate 18 and is easy to control.

[0063] A method for welding a double-layer thermos flask liner, the method comprising the following steps:

[0064] Step 1: The cylinder 34 drives the horizontal plate 18 to rise, and then the two support plates 29 approach each other, and the two arc-shaped plates 28 move away from each other:

[0065] Step 2: The two first gears 20 are meshed with the first rack rod 19, so that the cross bar 11 is moved through the driving rod 21, and then the push plate 35 pushes the bottom film to be loaded;

[0066] Step 3: The L-shaped rod 12 and the pressure rod 14 make the pressure rod 14 press down the pressure plate 8, so that the bottom film tends to be horizontal;

[0067] Step 4: Place the thermos flask liner to be welded on the receiving groove 31 on the support plate 29, and when the cylinder 34 drives the horizontal plate 18 to descend, the two arc-shaped plates 28 clamp the thermos flask liner;

[0068] Step 5: When the horizontal plate 18 descends, the horizontal bar 11 is reset, and after the horizontal plate 18 descends to the limit position, the rubber layer at the bottom of the turntable 23 contacts the inner liner of the thermos bottle, and the motor 22 drives the support member 17 and the bottom film to rotate through the roller 33 to reduce friction, thereby completing welding;

[0069] Step 6: Repeat the above steps.

[0070] Working principle: Before use, place the film on the loading plate 3 first. Because the loading plate 3 is tilted, when the film is placed on it, it will slide to the rear of the base 1, and the push pieces 35 are located on both sides in front of the rearmost film. Then start the driving group. When the driving group works, it will push the two L-shaped rods 12 to move backward along the cross bar 11. Because the limit rod 4 is slidably connected with the rectangular groove 5, and the first spring 7 is in a compressed state at this time, when the L-shaped rod 12 moves backward, it will push the limit rod 4 and the cross bar 11 to move backward through the third spring 13. When the limit rod 4 moves backward, it will drive the push piece 35 to move. When the two push pieces 35 move backward, they will push the rearmost film of the loading plate 3 to the rear support. When the inner circle above the supporting member 17 moves, the limiting rod 4 moves a certain distance and its bottom end will be separated from the bottom of the top plate 6. At this time, the first spring 7 will be elastically relaxed and will tend to push the top plate 6 upward, but the bottom of the push piece 35 is still in the horizontal plane of the rectangular groove 5, so the top plate 6 cannot push the push piece 35 up. However, when the bottom plate enters the inner circle of the supporting member 17, the limiting rod 4 also slides to the vertical plane position at the rear of the rectangular groove 5. At this time, the first spring 7 will push the push piece 35 upward through the top plate 6, so that the push piece 35 slides upward to the limit position along the limiting rod 4. At this time, the bottom end of the push piece 35 is higher than the top end of the bottom plate, and the bottom plate behind the loading plate 3 will slide backward along the loading plate 3.

[0071] When the limit rod 4 slides backward, it will also drive the vertical rod 9 to slide along the base 1. When the vertical rod 9 slides, it will drive the pressure plate 8 to move. When the push piece 35 pushes the bottom plate to the inner circle of the support member 17, the limit rod 4 also moves to the limit position. At this time, the pressure plate 8 is above the support member 17. Because the bottom plate will be tilted after entering the inner circle of the support member 17, the driving group will continue to push the L-shaped rod 12. Because the limit rod 4 has slid to the limit position, the driving group pushes the L-shaped rod 12 to compress the third spring 13 and will not cause the cross bar 11 and the limit rod 4 to continue to move. When the third spring 13 is compressed, the L-shaped rod 12 will move When the L-shaped rod 12 moves backward again, its wedge-shaped rear end will contact the end of the pressure rod 14 and push the end of the pressure rod 14 upward, so that the pressure rod 14 rotates around the fixed rod 15 and compresses the torsion spring 16. At this time, the end of the pressure rod 14 close to the pressure plate 8 will drop and press down the side of the pressure plate 8. After being pressed down by the pressure rod 14, the pressure plate 8 will slide downward along the vertical rod 9 and compress the second spring 10. When the pressure plate 8 slides downward, it will press down the bottom film of the inner circle of the support member 17, so that the inclined bottom film can be adjusted in angle after receiving the pressure from the pressure plate 8, so that the bottom film is in a horizontal position;

[0072] When the inner liner of the thermos flask is lowered, the driving group will drive the cross bar 11 to reset. Because the top plate 6 will lift the push piece 35 after the limit rod 4 moves to the limit position, the cross bar 11 will drive the limit rod 4 to retreat. At this time, the push piece 35 will retreat along the horizontal groove above the rectangular groove 5, thereby preventing the push piece 35 from being blocked by the rear bottom film when retreating. When the limit rod 4 retreats to the initial position, the push piece 35 will descend from the frontmost vertical groove of the rectangular groove 5 to the initial position, thereby facilitating the next push and loading of the bottom film. When the inner liner of the thermos flask falls onto the bottom film, the driving group will drive the inner liner of the thermos flask and the support member 17 to rotate, and then the welding position will be welded by the welding gun 2 while the support member 17 and the inner liner of the thermos flask are rotating;

[0073] After welding is completed, the driving assembly will drive the welded liner and bottom film to rise, and drive the cross bar 11 to move backward again, so as to load the bottom film again;

[0074] The driving group drives the cross bar 11 and the limit rod 4 to move, and then the push piece 35 is used to push the film for loading. There is no need for manual placement, which reduces the labor intensity and frequent manual adjustments. After the push piece 35 is loaded, the pressure rod 14 will press down the pressure plate 8, thereby pressing down the film on the inner circle of the support member 17 through the pressure plate 8, so that the inclined film can tend to be horizontal, and then the driving group drives the push piece 35 to reset, and then the driving group drives the inner liner and the film to rotate, thereby completing the welding, so that the welding quality can be guaranteed.

Claims

1. A double-layer thermos flask liner welding device, comprising a base (1), a welding gun (2) is arranged behind the base (1), and is characterized in that: The top of the base (1) is fixedly connected to a loading plate (3), the top of the loading plate (3) is tilted, a pressing plate (8) is arranged above the loading plate (3), the top of the base (1) is rotatably connected to a support member (17), and loading groups are arranged on both sides of the pressing plate (8); The feeding group comprises a limit rod (4), a rectangular groove (5), a second spring (10), a pressure rod (14) and a fixed rod (15); the fixed rod (15) is wedge-shaped and fixedly connected to the top of the base (1); the limit rod (4) is slidably connected to the right side wall of the feeding plate (3) in the front-back direction; the rectangular groove (5) is provided on the right side wall of the feeding plate (3); the limit rod (4) is slidably connected to a push piece (35); the bottom end of the push piece (35) is slidably connected to the inside of the rectangular groove (5); a top plate (6) is arranged below the limit rod (4); the top plate (6) is slidably connected to the feeding plate (3) in the vertical direction; the top plate (6) is fixedly connected to a a first spring (7), the limiting rod (4) is fixedly connected to a vertical rod (9), the vertical rod (9) is slidably connected to the base (1), the pressing plate (8) is slidably connected to the vertical rod (9), the second spring (10) is fixedly connected between the pressing plate (8) and the vertical rod (9), the limiting rod (4) is fixedly connected to a cross rod (11), the cross rod (11) is slidably connected to an L-shaped rod (12); the L-shaped rod (12) is fixedly connected to a third spring (13) for resetting the L-shaped rod (12), the rear end of the L-shaped rod (12) is wedge-shaped, the pressing rod (14) is rotatably connected to the fixed rod (15), the pressing rod (14) is used to press the pressing plate (8) downward, and the rotating shaft of the pressing rod (14) is sleeved with a torsion spring (16); A driving group is arranged above the two feeding groups, and the driving group can drive the two L-shaped plates (12) to move backward and drive the supporting member (17) to rotate while clamping the inner liner of the thermos bottle.

2. A double-layer thermos flask liner welding device according to claim 1, characterized in that: The driving group comprises a transverse plate (18) and a motor (22), wherein the transverse plate (18) is slidably connected to the two fixed rods (15), the transverse plate (18) is fixedly connected to two first rack rods (19), the two first rack rods (19) are meshed with first gears (20), the two first gears (20) are respectively rotatably connected to the two fixed rods (15), the two first gears (20) are fixedly connected to a driving rod (21), the two driving rods (21) are respectively rotatably connected to the two fixed rods (15), the bottom ends of the two driving rods (21) are respectively located inside the two transverse rods (11), the motor (22) is fixedly connected to the bottom of the transverse plate (18), and the output shaft of the motor (22) is fixedly connected to a rotating disk (23); The driving group also includes a linear driving group and a clamping group, wherein the clamping group is used to clamp the inner liner of the thermos bottle, and the linear driving group is used to drive the transverse plate (18) to rise and fall.

3. A double-layer thermos flask liner welding device according to claim 2, characterized in that: The clamping group comprises two connecting rods (24), the two connecting rods (24) are symmetrically arranged with respect to the motor (22), the two connecting rods (24) are fixedly connected with a sixth spring (32) for resetting the two connecting rods (24), and the two connecting rods (24) are slidably connected with a second rack rod (25); the two second rack rods (25) are fixedly connected with a fourth spring (26) for resetting the two second rack rods (25), the two second rack rods (25) are fixedly connected with an arc-shaped sheet (28), the two second rack rods (25) are meshed with a second gear (27), the two second gears (27) are respectively rotatably connected with the two connecting rods (24), and the two second rack rods (25) are slidably connected with a support sheet (29); the two second gears (27) are meshed with a third rack rod (36), the two support sheets (29) are fixedly connected with a fifth spring (30) for resetting the two third rack rods (36) are fixedly connected with the fixing rod (15).

4. A double-layer thermos flask liner welding device according to claim 3, characterized in that: The two support sheets (29) are both provided with a receiving groove (31).

5. A double-layer thermos flask liner welding device according to claim 3, characterized in that; The inner walls of the two arc-shaped sheets (28) are rotatably connected to a plurality of rollers (33).

6. A double-layer thermos flask liner welding device according to claim 2, characterized in that: The bottom of the rotating disk (23) is glued with a rubber layer.

7. A double-layer thermos flask liner welding device according to claim 2, characterized in that: The linear drive group comprises two cylinders (34), and the two cylinders (34) are fixedly connected between the base (1) and the transverse plate (18).

8. A double-layer thermos flask liner welding method according to claim 1, applicable to the double-layer thermos flask liner welding device described in claims 1-7, characterized in that: The method comprises the following steps: Step 1: The cylinder (34) drives the horizontal plate (18) to rise, and then the two supporting plates (29) move closer to each other, and the two arc-shaped plates (28) move away from each other; Step 2: The two first gears (20) are meshed with the first rack rod (19), so that the cross bar (11) is moved through the driving rod (21), and the push plate (35) pushes the bottom film to be loaded; Step 3: The L-shaped rod (12) and the pressing rod (14) are used so that the pressing rod (14) presses down the pressing plate (8), thereby making the bottom film tend to be horizontal; Step 4: placing the inner liner of the thermos bottle to be welded on the receiving groove (31) on the supporting plate (29), and when the cylinder (34) drives the horizontal plate (18) to descend, the two arc-shaped plates (28) clamp the inner liner of the thermos bottle; Step 5: When the horizontal plate (18) is lowered, the horizontal bar (11) is reset, and when the horizontal plate (18) is lowered to the limit position, the rubber layer at the bottom of the turntable (23) contacts the inner liner of the thermos bottle, and when the motor (22) drives the support member (17) and the bottom film to rotate, the friction can be reduced through the roller (33), thereby completing the welding; Step 6: Repeat the above steps.

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