A welding device for plastic containers for vehicles

Abstract

The present invention relates to the technical field of automobile parts processing equipment, and discloses a vehicle plastic container welding device, comprising a left mold, a right mold, and a heating device; the right mold comprises a right front mold plate and a right rear mold plate; the right front mold plate is provided with a right mounting opening, a first clearance opening, and a second clearance opening; the first clearance opening is for a first mounting portion and a third guide tube to pass through, and the right mold side wall is provided with a first bayonet connected to the first clearance opening; a first clamping plate is provided at the first bayonet opening, and the first clamping plate is provided with a first abutting edge that is adapted to the shape of the outer wall of the right shell at one end facing the right shell, and the first clamping plate is connected to a first driving portion; the second clearance opening is for a second mounting portion to pass through, and the right mold side wall is provided with a second bayonet opening connected to the second clearance opening; a second clamping plate is provided at the second bayonet opening, and the second clamping plate is provided with a second abutting edge that is adapted to the shape of the outer wall of the right shell at one end facing the right shell, and the second clamping plate is connected to a second driving portion. The present invention has the effect of effectively reducing welding misalignment problems and reducing welding defective products.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts processing equipment, and particularly relates to a welding device for automobile plastic containers. Background Art

[0002] Figure 1 The plastic container shown is a car kettle, which is used to store coolant or windshield washer fluid, so as to better ensure the cooling system of the engine working at normal temperature. The car kettle is made by welding two thin-walled hollow shell structures, the left shell 1 and the right shell 2. The production of the kettle generally includes two processes. First, the left shell 1 and the right shell 2 of the kettle are heated by a hot plate, and then the openings are butt-jointed to ensure a firm weld. Since the left shell and the right shell of the plastic container are both thin-walled structures with narrow end faces, the two are improperly / inaccurately butted during the welding process, and the left and right shell ends are easily misaligned, resulting in defective welds. Such defective products cannot be reworked, which easily leads to the direct scrapping of the product. Therefore, the welding processing quality of the aforementioned plastic container still has room for further improvement. Summary of the Invention

[0003] The object of the present invention is to provide a vehicle plastic container welding device with precise alignment.

[0004] In order to achieve the above object, the technical solutions specifically provided by the present invention are as follows:

[0005] A welding device for a plastic container for a vehicle includes a left mold and a right mold that can move toward or away from each other in the horizontal direction. The left mold is used to install and fix the left shell, and the right mold is used to install and fix the right shell. A heating device that can move up and down in the vertical direction is provided between the left and right molds.

[0006] The right mold includes a right front mold plate and a right rear mold plate arranged in sequence in a direction away from the left mold, the right front mold plate and the right rear mold plate are spaced apart and relatively fixed in position; the right front mold plate is provided with a right mounting opening adapted to the shape of the right shell opening, and a first clearance opening and a second clearance opening communicated with the right mounting opening;

[0007] The first clearance opening is for the first mounting portion and the third guide tube to pass through, and a first bayonet opening is formed on the side wall of the right shell and is connected to the first clearance opening; a first clamping plate is provided at the first bayonet opening, and a first abutting edge is provided on one end of the first clamping plate facing the right shell and adapted to the shape of the outer wall of the right shell, and the first clamping plate is connected to a first driving portion for driving the first clamping plate to move within the first bayonet opening in a direction parallel to the right front template;

[0008] The second clearance opening is for the second mounting part to pass through, and a second bayonet connected to the second clearance opening is opened on the side wall of the right shell; a second clamping plate is provided at the second bayonet, and a second abutting edge adapted to the shape of the outer wall of the right shell is provided at one end of the second clamping plate facing the right shell, and the second clamping plate is connected to a second driving part for driving it to move in the second bayonet in a direction parallel to the right front template.

[0009] By adopting the above technical solution, the opening and closing of the left and right molds can be achieved by using known guide rails and hydraulic / pneumatic drive means. The opening and closing directions of the two molds are relatively fixed, and both can be set to move or only one can be movable. On this basis, the present invention optimizes the structure of the right mold, so that the right shell is fixed and does not loosen or shake during each welding, thereby ensuring the docking accuracy of the left and right shells and improving the welding quality. Specifically, before welding, the right shell is installed into the right mounting opening on the right front mold plate, which can relatively easily align the right shell opening with the left shell fixed to the left mold. At the same time, the right shell is locked in the right mounting opening by means of the first and second clamping plates with matching abutting edges. When fastened together, the left and right shells are relatively fixed in their moving directions. With the cooperation of the first and second clamping plates and the right mounting opening, the right shell can be moved closer to the left shell in a relatively fixed position during each welding, thus ensuring accurate docking, improving welding quality, and reducing the risk of defective welds.

[0010] Furthermore, a positioning shell cover for the main body of the right shell to be snapped into is provided between the right front template and the right rear template, and a plurality of third clearance openings for the protruding parts of the outer wall of the right shell to pass through are opened on the positioning shell cover.

[0011] By adopting the above technical solution, the positioning shell can further position and lock the right shell, reducing welding quality problems caused by shaking and displacement of the right shell.

[0012] Furthermore, a first through hole is opened on the positioning shell cover, and a first buffer positioning member is provided in the first through hole. The first buffer positioning member can play a buffering and positioning role when the right shell is installed, thereby reducing the damage to the right shell caused by collision.

[0013] Furthermore, the first buffer positioning member includes a first connecting rod fixedly disposed in the first through hole and a first suction nozzle disposed at the end of the first connecting rod, and the first suction nozzle abuts against the outer wall of the right shell.

[0014] Furthermore, the left mold includes a left front mold, a left middle mold and a left rear mold, which are arranged in sequence along the direction away from the right mold; wherein, the left front mold and the left middle mold are fixed relative to the left rear mold, and the left front mold is provided with a left mounting opening adapted to the shape of the left shell opening, and the left middle mold is provided with a left accommodating cavity for accommodating the left shell main body on the side facing the right mold, and a makeshift groove for the first guide tube to pass through is provided on the side; the left middle mold is provided with a socket for inserting a threaded connecting pipe and is provided with a locking mechanism for cooperating with the threaded connecting pipe to lock the left shell.

[0015] By adopting the above-mentioned technical solution, the left shell is installed between the left middle template and the left front template, so that the opening of the left shell is inserted into the left installation port, the first guide tube passes through the give way groove, and the threaded connecting tube is inserted into the socket, and then the threaded connecting tube is fixed with the help of the locking mechanism, so that the left shell as a whole is firmly fixed.

[0016] Furthermore, the locking mechanism includes a linear drive installed on the left middle template and a plug installed on the driving end of the linear drive; the socket is provided with a plug made of elastic material for inserting a threaded connecting pipe; the wall of the plug is provided with a plurality of deformation slits extending to the end of the plug along the length direction, and the radial direction of the plug away from the linear drive gradually decreases; the plug is inserted into the plug.

[0017] By adopting the above technical solution, when the plug is in the retracted state, the cannula can be smoothly inserted into the threaded connecting tube on the left shell; driven by the linear drive member, the plug moves toward the deformation gap, so that the diameter of the end of the cannula is expanded, thereby pressing against the threaded connecting tube to close and fix the left shell.

[0018] Furthermore, a second through hole is formed on the left middle template, and a second buffer positioning member is provided in the second through hole. The second buffer positioning member can play a buffering and positioning role when the left shell is installed, thereby reducing the damage to the left shell caused by collision.

[0019] Furthermore, the second buffer positioning member includes a second connecting rod fixedly disposed in the second through hole and a second suction nozzle disposed at the end of the second connecting rod, and the second suction nozzle abuts against the outer wall of the right shell.

[0020] Furthermore, the first driving part and the second driving part both include a base, a cardboard driving member capable of providing push-pull driving force, and a connecting member; the connecting member is connected to the driving end of the cardboard driving member and is used to transmit the driving force to the first cardboard and the second cardboard.

[0021] By adopting the above solution, after the right shell is installed in place, the first clamping plate and the second clamping plate can be pressed against the right shell by using the clamping plate driving member, thereby fixing the right shell in place.

[0022] Furthermore, a guide structure is provided between the first clamping plate and the first clamping port, and between the second clamping plate and the second clamping port; the guide structure includes a guide groove and a guide bar that engages with the guide groove. The cooperation between the guide bar and the guide groove can limit the movement direction of the first clamping plate and the second clamping plate.

[0023] Furthermore, the heating device includes parallel heating plates and a heating element disposed between the two heating plates. In this way, the left shell and the right shell can be heated simultaneously. After the heating device is removed, the left and right molds are closed, and the heated left and right shells are butt-jointed and securely welded.

[0024] The present invention has the following beneficial effects:

[0025] The present invention adopts a mold mechanism that is compatible with the plastic container shell, which can accurately position and fix the left shell and the right shell, thereby ensuring that the two can be accurately docked when closed, reducing defective welding products. In the preferred embodiment, the right mold can accurately position and firmly fix the right shell through the four means of the right mounting port and the side wall of the right shell opening, the first clamping plate / the second clamping plate abutting the right shell side wall, the auxiliary positioning of the first buffer positioning member, and the covering positioning of the positioning shell cover on the right shell body; at the same time, the left mold can accurately position and firmly fix the left shell through the five means of the left mounting port and the left shell opening, the clearance groove and the first guide tube, the left accommodating cavity and the left shell body, the auxiliary positioning of the second buffer positioning member, and the locking mechanism of the threaded connecting tube. Therefore, it is not easy to have misalignment and deviation problems during closing welding, which greatly reduces the generation of defective welding products. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a plastic container in the background technology;

[0027] Figure 2 It is a structural schematic diagram of the left shell of the plastic container in the background technology;

[0028] Figure 3 It is a structural schematic diagram of the right shell of the plastic container in the background technology;

[0029] Figure 4 Schematic diagram of the structure of the vehicle plastic container welding device in the embodiment;

[0030] Figure 5 This is a schematic structural diagram of the right mold of the vehicle plastic container welding device according to an embodiment;

[0031] Figure 6 Schematic diagram of the right mold structure of the vehicle plastic container welding device (with the right shell installed) in the embodiment;

[0032] Figure 7 for Figure 6 Enlarged view of part A;

[0033] Figure 8 This is a cross-sectional view of the right mold of the automotive plastic container welding device (with the right shell installed) in the embodiment.

[0034] Figure 9 Schematic diagram of the left mold structure of the vehicle plastic container welding device in the embodiment;

[0035] Figure 10 The left mold structure of the vehicle plastic container welding device (with the left shell installed) in the embodiment is shown in FIG. Figure 1 ;

[0036] Figure 11This is a cross-sectional view of the left mold (with the left shell installed) of the automotive plastic container welding device in the embodiment;

[0037] Figure 12 for Figure 11 Enlarged view of part B;

[0038] Figure 13 The left mold structure of the vehicle plastic container welding device (with the left shell installed) in the embodiment is shown in FIG. Figure 2 .

[0039] Description of reference numerals:

[0040] 1. Left shell; 11. First guide tube; 12. Second guide tube; 13. Threaded connecting tube; 2. Right shell; 21. Third guide tube; 22. First mounting portion; 23. Second mounting portion; 24. Fourth guide tube; 3. Left mold; 31. Left front mold plate; 311. Left mounting port; 32. Left center mold plate; 321. Left accommodating cavity; 322. Gap groove; 323. Insertion hole; 324. Locking mechanism; 3241. Linear drive element; 3242. Plug; 3243. Insertion tube; 3244. Deformation gap; 325. Second through hole; 326. Second buffer positioning element; 3261. Second connecting rod; 3262. Second suction nozzle; 3263. Second mounting bracket; 33. Left rear mold Plate; 34, left connecting column; 4, right mold; 41, right front template; 411, right mounting port; 412, first clearance port; 4121, first bayonet; 4122, first card; 413, second bayonet; 4131, second card; 414, base; 415, card drive; 416, connector; 42, positioning shell; 421, third clearance port; 422, first through hole; 423, first buffer positioning member; 4231, first connecting rod; 4232, first suction nozzle; 4233, first mounting bracket; 43, right rear template; 44, right connecting column; 45, guide bar; 5, heating device; 51, heating plate; 52, lifting ring; 53, mounting frame. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present application will be further described in detail below with reference to the accompanying drawings.

[0042] Figure 1 The plastic container shown is a car water bottle in the related art, used to store coolant or windshield washer fluid to better ensure the engine's cooling system operates at normal temperature. The plastic container is welded together from two thin-walled hollow shell components: a left shell 1 and a right shell 2.

[0043] Reference Figure 1 、 Figure 2 and Figure 3The outer wall of the left shell 1 is connected to a pair of first guide tubes 11 at the top corners. A second guide tube 12, connected to the first guide tubes 11, is located on the inner side of the left shell 1. A pair of threaded connecting tubes 13 are also located on the outer wall of the left shell 1. A third guide tube 21 is connected to the top corner of the right shell 2, extending from the side of the right shell 2. An L-shaped first mounting portion 22 is located on the outer wall of the right shell 2, near the third guide tube 21. The first mounting portion 22 protrudes parallel to the third guide tube 21 relative to the main body of the right shell 2. A protruding second mounting portion 23 is located on the side wall of the right shell 2 opposite the side wall of the right shell 2 with the first mounting portion 22. A fourth guide tube 24 is located at an angle on the back of the right shell 2. The interior cavities of both the left and right shells 1 and 2 are arranged in a nine-square grid pattern, with the surrounding side walls undulating in a wave-like pattern.

[0044] In order to improve the welding quality of the aforementioned plastic containers and reduce defective products, the present invention aims to provide a vehicle plastic container welding device.

[0045] A welding device for plastic containers for vehicles, referring to Figure 4 It includes a left mold 3 and a right mold 4 that can move closer to or away from each other in the horizontal direction, and also includes a heating device 5 set between the left mold 3 and the right mold 4. The left mold 3 is used to fix the left shell 1, and the right mold 4 is used to fix the right shell 2; the heating device 5 can move in the vertical direction to heat the openings of the left shell 1 and the right shell 2. When welding, the left shell 1 and the right shell 2 are first heated by the heating device 5, and then the left mold 3 and the right mold 4 are brought closer to each other so that the openings of the left shell 1 and the right shell 2 are butted, and the temperature is reduced to weld. Figure 1 The mold frame and workbench for mounting the left mold 3 / right mold 4, the guide rails for guiding the movement of the left mold 3 / right mold 4, and the power mechanism for providing driving force for the movement of the left mold 3 / right mold 4 are not shown in the figure. They are all existing or well-known means in the art and will not be described in detail here.

[0046] Reference Figure 4 The heating device 5 includes a mounting frame 53 and a pair of parallel heating plates 51 arranged on the mounting frame 53. The two heating plates 51 are spaced apart, and a heating element is provided in the middle. The heating element can be an electric heating wire that can generate high temperature when powered on. A pair of hanging rings 52 are provided at the top of the mounting frame 53, and a connecting component is provided at the bottom. The connecting component is used to connect to the driving mechanism of the heating device 5 to provide driving force for the up and down movement of the heating device 5. The attached driving mechanism is not shown in the figure, which is an existing or well-known means in the field and will not be described here.

[0047] Reference Figure 4 and Figure 5The right mold 4 is used to fix the right shell 2. The right shell 2 includes a right front mold plate 41 and a right rear mold plate 43, which are parallel and detachably fixed by right connecting columns 44 at the four corners, which can be specifically connected by threaded or bolted connections. A right mounting opening 411 is provided in the center of the right front mold plate 41, which is adapted to the shape of the opening of the right shell 2. A first clearance opening 412 and a second clearance opening are provided on the side of the right front mold plate 41 facing the left mold 3, which are respectively located on opposite sides and connected to the right mounting opening 411. The first clearance opening 412 is used to allow the third guide tube 21 and the first mounting portion 22 to pass through when installing the right shell 2, and the second clearance opening is used to allow the second mounting portion 23 to pass through. At corresponding positions on the right front mold plate 41, a first bayonet 4121 is provided, which is connected to the first clearance opening 412 and the right mounting opening 411, and a second bayonet 413 is provided, which is connected to the second clearance opening and the right mounting opening 411. A first clamping plate 4122 is slidably mounted within the first clamping opening 4121. The end of the first clamping plate 4122 facing the right mounting opening 411 has a first abutting edge that matches the shape of the outer wall of the right shell 2. A second clamping plate 4131 is slidably mounted within the second clamping opening 413. The end of the second clamping plate 4131 facing the right mounting opening 411 has a second abutting edge that matches the shape of the outer wall of the right shell 2. By moving the first clamping plate 4122 or the second clamping plate 4131, the right shell 2 can be loosened or tightened.

[0048] Reference Figure 5 、 Figure 6 and Figure 7 A positioning shell 42 is provided on the back side of the right front template 41. The inner cavity shape of the positioning shell 42 is adapted to the main body shape of the right shell 2, and together with the right front template 41, a space is formed to accommodate the right shell 2. The positioning shell 42 is provided with a third clearance opening 421 for the protruding parts such as the fourth guide tube 24 to pass through. The power mechanism that provides power for the movement of the first card 4122 and the second card 4131 includes a base 414 fixed to the positioning shell 42, a card driving member 415 installed on the base 414, and a connecting member 416 provided at the driving end of the card driving member 415, and the other end of the connecting member 416 is connected to the first card 4122 / the second card 4131. In this embodiment, the power mechanism for providing driving force for the first card 4122 and the second card 4131 is the same; the card driving member 415 can be a cylinder, a hydraulic cylinder or a linear motor. In this embodiment, a hydraulic cylinder is used. When the card driving member 415 generates thrust, the first card 4122 / the second card 4131 are driven to move outwards through the connecting member 416 to release the right shell 2; otherwise, the first card 4122 / the second card 4131 abut against the outer wall of the right shell 2.

[0049] Reference Figure 5 、 Figure 6 and Figure 7To enhance the smooth movement of the first and second clamping plates 4122 and 4131, guide grooves are provided on the sidewalls of the first and second clamping ports 4121 and 413. These grooves are parallel to the sliding direction of the first and second clamping plates 4122 and 4131. Guide strips 45 are provided on the sides of the first and second clamping plates 4122 and 4131 to engage with the guide grooves.

[0050] Reference Figure 6 、 Figure 7 and Figure 8 After the right shell 2 is fixed, the third guide tube 21 and the first mounting portion 22 pass through the first clearance opening 412 on the back side of the positioning shell cover 42, and the fourth guide tube 24 passes through the third clearance opening 421. Under the joint action of the right front template 41, the positioning shell cover 42, the first clamping plate 4122 and the second clamping plate 4131, the right shell 2 is fixed.

[0051] Reference Figure 6 、 Figure 7 and Figure 8 In order to improve the fixing effect, a first buffer positioning member 423 is also provided. The first buffer positioning member 423 includes a first mounting bracket 4233, a first connecting rod 4231 and a first suction nozzle 4232. A first through hole 422 is provided on the back side of the positioning shell cover 42. A U-shaped first mounting bracket 4233 is fixedly provided at the first through hole 422. A first connecting rod 4231 extending into the first through hole 422 is fixedly provided on the first mounting bracket 4233. A first suction nozzle 4232 is fixedly installed at one end of the first connecting rod 4231 located in the first through hole 422. In this way, the negative pressure suction force generated by the first suction nozzle 4232 can be used to assist in fixing the right shell 2. The first connecting rod 4231 is threadedly connected to the first mounting bracket 4233. If necessary, the depth of the first connecting rod 4231 inserted into the first through hole 422 can be adjusted to adjust the suction force of the first suction nozzle 4232 on the right shell 2.

[0052] Reference Figure 6 and Figure 8 The state after the right shell 2 is completely installed in the right mold 4 is as follows Figure 11 As shown, under the joint action of the right front template 41, the positioning shell, the first clamping plate 4122 / the second clamping plate 4131 and the first buffer positioning member 423, the right shell 2 is firmly fixed, the third guide tube 21 and the first mounting portion 22 pass through the first clearance port 412 groove, the second mounting portion 23 is stored in the second clearance port, and the fourth guide tube 24 passes through the third clearance port 421. In this way, when subsequent heating and docking operations are performed, the right shell 2 is not prone to loosening / shaking, which is conducive to reducing welding problems.

[0053] Reference Figure 9 and Figure 10The left mold 3 is used to fix the left shell 1. The left mold 3 includes a parallel and relatively fixed left front mold plate 31, a left middle mold plate 32 and a left rear mold plate 33, wherein the left front mold plate 31 and the left middle mold plate 32 are both detachably fixed to the left rear mold plate 33 through left connecting columns 34 at the four corners, which can be threaded or bolted.

[0054] Reference Figure 10 、 Figure 11 and Figure 12 The left front template 31 has a left mounting opening 311 in the middle that matches the shape of the opening in the left shell 1, giving it a roughly rectangular frame shape. The left middle template 32, which is thicker than the left shell 1, has a left accommodating cavity 321 for accommodating the main body of the left shell 1. A sidewall groove 322, connected to the left accommodating cavity 321, allows the first guide tube 11 to extend. To install the left shell 1, the main body of the left shell 1 is inserted into the left mounting opening 311, locking the main body into the left accommodating cavity 321 and the first guide tube 11 into the groove 322. The left front template 31 and the left middle template 32 are then secured relative to each other and fixedly connected to the left rear template 33. This essentially secures the left shell 1.

[0055] Reference Figure 10 、 Figure 11 and Figure 12 In order to improve the installation and fixing effect of the left shell 1 and reduce the misalignment problem during the welding process, the left mold 3 also includes a locking mechanism 324. A stack of sockets 323 for inserting the threaded connecting tubes 13 are opened on the left middle template 32. The locking mechanism 324 includes a plug 3243 fixedly arranged in the socket 323, a plug 3242 arranged in the plug 3243, and a linear drive member 3241 for driving the plug 3242 to move. The linear drive member 3241 is fixedly arranged on the left middle template 32, which can be a cylinder, a hydraulic cylinder or a linear motor. In this embodiment, a hydraulic cylinder is selected. The plug 3243 is used to be inserted into the threaded connecting tube 13. It is made of elastic material and has a certain deformation ability. The end of the cannula 3243 away from the linear drive member 3241 is provided with a plurality of deformation slits 3244 along the length direction. The plurality of deformation slits 3244 are evenly spaced along the circumference of the cannula 3243, and the inner diameter of the end away from the linear drive member 3241 gradually decreases in the direction away from the linear drive member 3241. The plug 3242 is disposed in the cannula 3243 and is fixedly connected to the driving end of the linear drive member 3241, and can move along the axis of the cannula 3243. When the main body of the left shell 1 is inserted into the left accommodating cavity 321, the threaded connecting tube 13 is inserted into the jack 323 and the cannula 3243 is inserted into the threaded connecting tube 13. Then, driven by the linear drive member 3241, the plug 3242 moves, causing the end of the cannula 3243 to expand outward, thereby firmly fixing the threaded connecting tube 13.

[0056] Reference Figure 11 、 Figure 12 and Figure 13 The left middle template 32 is also provided with a number of second through holes 325, which are connected to the left accommodating chamber 321. A second buffer positioning member 326 is provided in the second through hole 325 for auxiliary fixation of the left shell 1. The second buffer positioning member 326 includes a second mounting bracket 3263, a second suction nozzle 3262 and a second connecting rod 3261. The second connecting rod 3261 is located in the second through hole 325 and is generally coaxial with the second through hole 325. One end of the second connecting rod 3261 is fixed to the second mounting bracket 3263, and the second mounting bracket 3263 is directly fixed to the left middle template 32. The second suction nozzle 3262 is provided at the other end of the second connecting rod 3261, and the open end slightly extends into the left accommodating chamber 321. When the left shell 1 is installed, the outer wall of the left shell 1 presses against the opening of the second suction nozzle 3262, squeezing out part of the gas and forming a negative pressure in the second suction nozzle 3262. The second connecting rod 3261 is threadedly connected to the second mounting bracket 3263 . The depth of the second connecting rod 3261 inserted into the second through hole 325 can be adjusted when necessary, so that the suction force of the second suction nozzle 3262 on the outer wall of the left shell 1 can be adjusted.

[0057] Reference Figure 11 and Figure 13 The state after the left shell 1 is completely installed into the left mold 3 is as follows Figure 13 As shown, under the joint action of the left front template 31, the left middle template 32, the locking mechanism 324 and the second buffer positioning member 326, the left shell 1 is firmly fixed, the first guide tube 11 passes through the makeshift groove 322 on the side of the left middle template 32, the second guide tube 12 passes through the left installation port 311, and the threaded connecting tube 13 is firmly locked by the locking mechanism 324. In this way, when subsequent heating and docking operations are performed, the left shell 1 is not prone to loosening / shaking, which is conducive to reducing welding problems.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A welding device for a plastic container for a vehicle, comprising a left mold (3) and a right mold (4) which can move closer to or farther from each other in a horizontal direction, wherein the left mold (3) is used to install and fix a left shell (1), and the right mold (4) is used to install and fix a right shell (2); a heating device (5) which can move up and down in a vertical direction is provided between the left mold (3) and the right mold (4), and characterized in that: The right mold (4) comprises a right front mold plate (41) and a right rear mold plate (43) which are sequentially arranged in a direction away from the left mold (3); the right front mold plate (41) and the right rear mold plate (43) are spaced apart and relatively fixed in position; the right front mold plate (41) is provided with a right mounting opening (411) which is adapted to the shape of the opening of the right shell (2), as well as a first clearance opening (412) and a second clearance opening which are communicated with the right mounting opening (411); The first clearance opening (412) is for the first mounting portion (22) and the third guide tube (21) to pass through, and a first bayonet opening (4121) is provided on the side wall of the right shell (2) and is communicated with the first clearance opening (412); a first clamping plate (4122) is provided at the first bayonet opening (4121), and a first abutting edge that is adapted to the shape of the outer wall of the right shell (2) is provided at one end of the first clamping plate (4122) facing the right shell (2), and the first clamping plate (4122) is connected to a first driving portion for driving it to move in the first bayonet opening (4121) in a direction parallel to the right front template (41); The second clearance opening is for the second mounting portion (23) to pass through, and a second bayonet opening (413) is provided on the side wall of the right shell (2) and is communicated with the second clearance opening; a second clamping plate (4131) is provided at the second bayonet opening (413), and a second abutting edge adapted to the shape of the outer wall of the right shell (2) is provided at one end of the second clamping plate (4131) facing the right shell (2), and the second clamping plate (4131) is connected to a second driving portion for driving the second clamping plate (4131) to move in the second bayonet opening (413) in a direction parallel to the right front template (41).

2. The vehicle plastic container welding device according to claim 1, characterized in that: A positioning shell cover (42) for the main body of the right shell (2) to be inserted is provided between the right front template (41) and the right rear template (43). The positioning shell cover (42) is provided with a plurality of third clearance openings (421) for the protruding parts of the outer wall of the right shell (2) to pass through.

3. The vehicle plastic container welding device according to claim 2, characterized in that: A first through hole (422) is formed on the positioning shell (42), and a first buffer positioning member (423) is provided in the first through hole (422).

4. A vehicle plastic container welding device according to any one of claims 1 to 3, characterized in that: The left mold (3) comprises a left front mold plate (31), a left middle mold plate (32) and a left rear mold plate (33) which are sequentially arranged in a direction away from the right mold (4); wherein the left front mold plate (31) and the left middle mold plate (32) are fixed relative to the left rear mold plate (33), and a left mounting opening (311) adapted to the opening shape of the left shell (1) is provided on the left front mold plate (31); a left accommodating cavity (321) for accommodating the main body of the left shell (1) is provided on the side of the left middle mold plate (32) facing the right mold (4), and a clearance groove (322) for the first guide tube (11) to pass through is provided on the side; the left middle mold plate (32) is provided with an insertion hole (323) for inserting the threaded connecting tube (13) and a locking mechanism (324) for cooperating with the threaded connecting tube (13) to lock the left shell (1).

5. The vehicle plastic container welding device according to claim 4, characterized in that: A second through hole (325) is formed on the left middle template (32), and a second buffer positioning member (326) is provided in the second through hole (325).

6. The vehicle plastic container welding device according to claim 1, characterized in that: The first driving part and the second driving part both comprise a base (414), a cardboard driving member (415) capable of providing push-pull driving force, and a connecting member (416); the connecting member (416) is connected to the driving end of the cardboard driving member (415) and is used to transmit the driving force to the first cardboard (4122) and the second cardboard (4131).

7. The vehicle plastic container welding device according to claim 6, characterized in that: A guide structure is provided between the first clamping plate (4122) and the first clamping port (4121), and between the second clamping plate (4131) and the second clamping port (413); the guide structure comprises a guide groove and a guide bar (45) inserted into the guide groove.

8. The vehicle plastic container welding device according to claim 1, characterized in that: The heating device (5) comprises parallel heating plates (51) and a heating element arranged between the two heating plates (51).

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