A hot plate welding machine welding sealing mechanism

Abstract

The application discloses a kind of hot plate welding machine welding sealing mechanism, including cabinet, respectively liftable in cabinet upper plastic piece fixing device and lower plastic piece fixing device, movable in cabinet plastic piece heating device, plastic piece heating device is located between upper plastic piece fixing device and lower plastic piece fixing device horizontal movement, upper plastic piece fixing device includes lifting slide one, turnover shaft one, turnover plate, upper positioning template;Lower plastic piece fixing device includes lifting slide two, turnover shaft two, turnover plate two, lower positioning template;Plastic piece heating device, heating slide, upper heating template, lower heating template, hydraulic telescopic cylinder one;Cabinet both sides are equipped with lifting assembly, and rotating assembly is installed on lifting slide one and lifting slide two;Upper positioning template, lower positioning template are equipped with suction assembly for sucking plastic piece in it.The advantages of the application: it has the effect of shortening the working time of hot plate welding machine, improving the welding processing efficiency of hot plate welding machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic welding, in particular to a hot plate welding machine welding sealing mechanism. BACKGROUND

[0002] The hot plate welding machine is used for the mechanism of welding sealing two plastic parts, wherein the working principle is that two plastic parts are respectively fixed and placed in the upper plastic part fixing device and the lower plastic part fixing device, then the upper plastic part fixing device and the lower plastic part fixing device will respectively drive the two plastic parts to move close to the middle plastic part heating device, so that the two plastic parts are respectively tightly attached to the heating structure on the upper and lower sides of the plastic part heating device, so as to melt the welding points of the two plastic parts, after the plastic part reaches a certain melting degree, the upper plastic part fixing device and the lower plastic part fixing device will drive the plastic part to move away from the plastic part heating device, at the same time, the plastic part heating device will withdraw from the upper plastic part fixing device and the lower plastic part fixing device, finally, the upper plastic part fixing device and the lower plastic part fixing device will combine the two plastic parts together, when reaching a certain welding time and welding depth, the whole welding sealing process is completed.

[0003] In the above welding sealing process, since only one plastic part template is placed in the upper plastic part fixing device and the lower plastic part fixing device, the worker can only replace the new unprocessed plastic part after the hot plate welding machine welds one plastic part each time, and because the general plastic part structure is relatively complex, the worker needs a long time to place and remove the plastic part, not only occupies a certain working time of the hot plate welding machine, but also needs a long time for the hot plate welding machine to weld each time, thereby leading to low welding processing efficiency of the hot plate welding mechanism. SUMMARY

[0004] The purpose of the present application is to provide a hot plate welding machine welding sealing mechanism, which has the effect of shortening the working time of the hot plate welding machine for each time and improving the welding processing efficiency of the hot plate welding machine.

[0005] The above technical purpose of the present application is realized by the following technical scheme: a hot plate welding machine welding sealing mechanism, comprising a cabinet, an upper plastic part fixing device and a lower plastic part fixing device which are respectively and vertically arranged in the cabinet, and a plastic part heating device which is movably arranged in the cabinet, wherein the plastic part heating device is horizontally movable between the upper plastic part fixing device and the lower plastic part fixing device, the upper plastic part fixing device comprises two lifting sliding blocks one which are respectively slidably arranged on the two sides of the cabinet, two turning shafts one which are respectively and rotatably connected to the two lifting sliding blocks one on the two sides of the cabinet, a turning plate one which is fixed on the two turning shafts one, and two upper positioning templates which are respectively fixed on the front and back surfaces of the turning plate one.

[0006] The lower plastic part fixing device comprises two lifting sliding blocks two respectively slidingly installed on the two sides of the cabinet, two overturning shafts two respectively rotationally connected to the two lifting sliding blocks two on the two sides of the cabinet, two overturning plates two fixed on the overturning shafts two, and two lower positioning templates respectively fixed on the front and back surfaces of the overturning plates two.

[0007] The cabinet is provided with a lifting assembly on the two sides thereof to drive the lifting sliding block one and the lifting sliding block two to slide up and down, and the lifting sliding block one and the lifting sliding block two are respectively provided with a rotating assembly to drive the overturning shaft one and the overturning shaft two to rotate; the upper positioning template and the lower positioning template are respectively provided with a groove corresponding to the fixed plastic part in position, the upper heating template and the lower heating template are respectively provided with a protrusion for heating the plastic part, the groove of the upper positioning template and the protrusion of the upper heating template, and the groove of the lower positioning template and the protrusion of the lower heating template correspond to each other, and the upper positioning template and the lower positioning template are provided with an air suction assembly for sucking the plastic part in the groove.

[0008] By adopting the above technical scheme, when welding two plastic parts, first, one of the plastic parts is placed in the groove of the upper positioning template on the top of the overturning plate one, and the other plastic part is placed in the groove of the lower positioning template on the bottom of the overturning plate two, then the rotating assembly is controlled to drive the overturning shaft one and the overturning shaft two to rotate, so that the two upper positioning templates of the overturning plate one or the two lower positioning templates of the overturning plate two are exchanged in position, and the two plastic parts are converted from opposite directions to relative directions in the exchange process, then the hydraulic telescopic cylinder one is controlled to push the heating slide plate to slide, so that the upper heating template of the heating slide plate corresponds to the upper positioning template, and the lower heating template corresponds to the lower positioning template, then the lifting assembly is controlled to drive the lifting sliding block one to slide downward and the lifting sliding block two to slide upward, so that the two plastic parts are clamped and fixed by the upper positioning template and the upper heating template, and the lower positioning template and the lower heating template, and are heated by the heating element in the heating slide plate at the same time, after the welding part of the plastic part reaches a certain melting degree, the lifting assembly and the hydraulic telescopic cylinder one are controlled again to pull back the heating templates between the overturning plate one and the overturning plate two, and finally the lifting assembly is controlled to drive the lifting sliding block one and the lifting sliding block two to further approach each other, so that the upper positioning template and the lower positioning template combine and clamp the two plastic parts, and after a certain welding time and welding depth, the whole welding process is completed.

[0009] In the process of heating and welding the plastic parts, the workers can place new plastic parts in the recesses of the upper positioning template placed above the first turnover plate and the lower positioning template placed above the second turnover plate again. After the welding of the plastic parts in the previous round is completed, the lifting mechanism pulls apart the distance between the first turnover plate and the second turnover plate, and the rotating mechanism drives the first turnover shaft and the second turnover shaft to rotate, so that the new plastic parts replace the plastic parts that have just been welded, and the welded plastic parts are exchanged to the lower side of the second turnover plate together with the lower positioning template, so as to be taken away by the workers. The air suction assembly can effectively suck the plastic parts placed in the recesses of the templates, not only can fix the plastic parts in the recesses of the upper positioning template and the lower positioning template to achieve the effect of heating and welding, but also can prevent the plastic parts placed upside down from falling due to gravity.

[0010] Further, the cabinet is provided with long strip sliding holes on both sides for sliding of the first and second lifting sliding blocks, the lifting assembly and the rotating assembly are respectively located outside the cabinet, guide rails are fixedly arranged on both sides of the cabinet, and the heating sliding plate is provided with a first moving sliding block slidingly connected with the guide rails.

[0011] By adopting the above technical scheme, the internal space of the cabinet can be effectively saved, and the sliding stability of the heating sliding plate is ensured.

[0012] Further, the rotating assembly comprises a first worm wheel fixedly installed on the first turnover shaft, a second worm wheel fixedly installed on the second turnover shaft, a first worm gear rotatably installed on the first lifting sliding block and engaged with the first worm wheel, a second worm gear rotatably installed on the second lifting sliding block and engaged with the second worm wheel, a driving shaft rotatably installed on the top of the cabinet and parallel to the first turnover shaft or the second turnover shaft, a driven shaft rotatably installed in the long strip sliding hole on each side of the cabinet and perpendicular to the driving shaft, two first bevel gears fixedly installed on the upper ends of the two driven shafts, two second bevel gears fixedly installed on the driving shaft and engaged with the two first bevel gears, and a motor fixedly installed on the cabinet and driving the driving shaft to rotate. Cavities for installing the first and second worm gears are respectively formed in the first and second lifting sliding blocks. The first and second turnover shafts rotatably pass through the cavities of the first and second lifting sliding blocks, and the first and second worm wheels are respectively located in the cavities of the first and second lifting sliding blocks. The first and second worm gears and the driven shafts have coaxial centers, and the two ends of the first and second worm gears rotatably pass through the cavities of the first and second lifting sliding blocks. The first and second worm gears are provided with through holes penetrating the two ends, and the driven shafts slidingly pass through the through holes of the first and second worm gears. The outer surface of the driven shaft and the inner surface of the through hole are respectively provided with matched polygonal external spline and polygonal internal spline.

[0013] When the first and second turnover shafts need to be driven to rotate, the motor first drives the driving shaft, so that the two bevel gears on the driving shaft mesh with the bevel gears on the top of the two driven shafts. Since the driven shafts slide through the through holes of the worm gears, and the outer surfaces of the driven shafts and the inner surfaces of the through holes are respectively provided with matching polygonal external splines and polygonal internal splines, the driven shafts drive the worm gears to rotate, and the worm gears mesh with the worm wheels in the cavities of the first and second lifting blocks, respectively. Finally, since the first and second turnover shafts rotate through the cavities of the first and second lifting blocks and are fixedly connected with the worm wheels, respectively, the first and second turnover shafts rotate synchronously with the worm wheels, so as to achieve the effect of changing the positions of the two upper positioning templates of the first turnover plate or the two lower positioning templates of the second turnover plate. Since the driven shafts slide through the through holes of the worm gears, and the driven shafts rotate vertically in the long sliding hole, the transmission between the driven shafts, the worm gears and the worm gears does not affect or interfere with the up-and-down sliding of the first and second lifting blocks.

[0014] Further, the lifting assembly comprises two connecting rods one respectively hinged to the two ends of the first turnover shaft and located on the two sides of the cabinet, two connecting rods two respectively hinged to the two ends of the second turnover shaft and located on the two sides of the cabinet, two moving blocks two respectively slidingly installed on the two sides of the cabinet, and two hydraulic telescopic cylinders two respectively fixedly installed on the two sides of the cabinet. The moving block two is fixedly provided with a hinge shaft one and slides horizontally between the first and second turnover shafts. The two connecting rods one and two on the same side of the cabinet are respectively hingedly connected with the hinge shaft one of the moving block.

[0015] When the first and second lifting blocks need to be driven to slide, the hydraulic telescopic cylinders two on the two sides of the cabinet simultaneously drive the moving blocks two connected with the piston rods at the front ends of the hydraulic telescopic cylinders two to slide. Then, the connecting rods one and two hingedly connected with the hinge shaft one of the moving block two drive or pull the first and second turnover shafts hingedly connected at the other ends, respectively. Since the first and second lifting blocks slide in the long sliding hole, and the first and second turnover shafts rotate through the first and second lifting blocks, respectively, under the pulling or driving of the connecting rods one and two, the first and second lifting blocks, the first and second turnover shafts slide towards or away from each other along the long sliding hole.

[0016] The further setting of the present application is that the air suction assembly comprises two main air suction pipes respectively arranged in the inside of the turnover shaft I and the turnover shaft II, two pairs of air suction pipes respectively arranged in the inside of the turnover plate I and the turnover plate II and respectively communicated with the main air suction pipe and the groove at two ends, two air outlets respectively arranged at one end of the turnover shaft I and the turnover shaft II and communicated with the main air suction pipe, an air suction machine fixedly installed at the bottom of the cabinet, and a three-way hose communicated with the two air outlets and the air suction machine, wherein a rotary joint is installed between the three-way hose and the air outlet.

[0017] By adopting the above technical scheme, the effect of stably adsorbing and fixing the plastic parts in all positioning template grooves can be realized without affecting the rotation and lifting work of the turnover plate I and the turnover plate II.

[0018] The further setting of the present application is that a collecting box for collecting plastic parts is arranged at the bottom of the cabinet, a partition plate is fixedly arranged between the plastic collecting box and the turnover plate II, the partition plate is provided with an opening for the plastic parts to enter the collecting box, and the opening of the partition plate is opposite to the lower positioning template of the downward surface of the turnover plate II.

[0019] By adopting the above technical scheme, the work personnel can conveniently collect the plastic parts after welding and processing.

[0020] The further setting of the present application is that the partition plate is provided with a sliding groove at one side of the opening, a sliding cover is slidably arranged in the sliding groove, the front end of the sliding cover extends out of the sliding groove, two slide columns are respectively fixedly arranged at two sides of the sliding cover extending out of the sliding groove, two long holes for parallel sliding plates are respectively arranged at the two sides of the cabinet, one end of the two slide columns respectively slides through the two long holes, and a third connecting rod is respectively hingedly arranged at the two long holes, a third moving sliding block is slidably arranged at the two sides of the cabinet, a second hinged shaft is fixedly arranged on the third moving sliding block, a fourth connecting rod is hingedly arranged between the second hinged shaft and the turnover shaft I, a fifth connecting rod is hingedly arranged between the second hinged shaft and the turnover shaft II, and the second hinged shaft of the third moving sliding block is hingedly arranged at the end of the third connecting rod away from the slide column.

[0021] When the lifting assembly controls the lifting slider one and the lifting slider two to pull apart or shorten the distance, the connecting rod four and the connecting rod five hinged to the turning shaft one and the turning shaft two will pull the moving slider three and the hinge shaft two horizontally slide together, then the hinge shaft two will pull the slide post to slide in the long hole through the connecting rod three, and finally the slide cover connected to the slide post will slide in and out of the sliding groove on the side of the partition plate, thereby realizing the automatic opening or closing of the opening of the partition plate under different conditions. When the plastic part welded and processed in the bottom positioning template of the turning plate two is removed, the lifting slider one and the lifting slider two have been pulled apart to a certain distance to ensure the stable rotation of the turning plate one and the turning plate two, so that the slide cover will automatically retract into the opening of the sliding groove under the action of the connecting rod structure, so as to facilitate the worker to put the plastic part into the collection box; when the new plastic part is placed in the bottom positioning template of the turning plate two, the lifting slider one and the lifting slider two have been shortened to a certain distance to heat and weld the previous plastic part, so that the slide cover will automatically extend out of the sliding groove to close the opening under the action of the connecting rod mechanism, thereby avoiding the worker from accidentally dropping the plastic part into the collection box during the placement of the new plastic part.

[0022] Further, the cabinet is provided with a guide groove on both sides for the sliding of the moving slider two and the moving slider three, and the middle part of the guide groove is penetrated by a long sliding hole, and the moving slider two and the moving slider three are symmetrically located on both sides of the long sliding hole.

[0023] By adopting the above technical scheme, the sliding stability of the moving slider one and the moving slider two can be effectively ensured.

[0024] Further, the side of the slide cover facing the turning plate two is provided with a mirror.

[0025] By adopting the above technical scheme, when the slide cover closes the opening of the partition plate, the worker can observe the bottom positioning template of the turning plate two, thereby facilitating the worker to quickly place the new plastic part.

[0026] The beneficial effects of the present application are: through the structure of the reversible turnover plate and the positioning template in the upper plastic part fixing device and the lower plastic part fixing device, new plastic parts can be loaded during the welding process of the plastic parts, and the welded plastic parts can be replaced in time, and the welded plastic parts can be inverted at the bottom of the turnover plate two, so that the workers can quickly unload them, thereby effectively shortening the loading and unloading preparation time of the hot plate welding machine, and also improving the welding processing efficiency of the hot plate welding machine; through the transmission structure of the gear, shaft, worm gear and worm in the rotating assembly, the synchronous rotation effect of the first turnover shaft and the second turnover shaft can be realized without affecting the working condition of the lifting assembly, and the self-locking characteristics of the worm gear and the worm can also ensure the stability of the upward and downward movement of the first turnover plate and the second turnover plate before and after the turnover; through the transmission structure of the connecting rod one, the connecting rod two and the moving slider two in the lifting assembly, the synchronous lifting of the lifting slider one and the lifting slider two can be driven, and the transmission structure of the connecting rod four, the connecting rod five and the moving slider three can also be linked to automatically open and close the baffle opening of the collection box, thereby facilitating the safe collection of the welded plastic parts; through the air suction structure of the air suction pipeline, the three-way hose, the rotary joint and the air suction machine in the air suction assembly, continuous and stable suction force can be provided to the grooves of all positioning templates without interfering with the rotation and lifting work of the first turnover plate and the second turnover plate, so as to prevent the plastic parts from falling out and deviating from the positioning point during the welding process. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0029] Figure 2 is a schematic view of the lifting assembly structure of the present application;

[0030] Figure 3 is a schematic view of the upper plastic part fixing device, the lower plastic part fixing device and the plastic part heating device structure of the present application;

[0031] Figure 4 is a schematic view of the air suction assembly structure of the present application;

[0032] Figure 5 is a schematic view of the rotating assembly structure of the present application;

[0033] In the figure, 1, cabinet; 11, long sliding hole; 12, guide rail; 13, long hole; 14, guide groove; 2, upper plastic part fixing device; 21, lifting slider one; 22, turning shaft one; 23, turning plate one; 24, upper positioning template; 3, lower plastic part fixing device; 31, lifting slider two; 32, turning shaft two; 33, turning plate two; 34, lower positioning template; 4, plastic part heating device; 41, heating sliding plate; 411, moving slider one; 42, upper heating template; 43, lower heating template; 44, hydraulic telescopic cylinder one; 5, rotating assembly; 51, worm gear one; 52, worm gear two; 53, worm one; 54, worm two; 55, driving shaft; 56, driven shaft; 57, bevel gear one; 58, bevel gear two; 59, motor; 6, lifting assembly; 61, connecting rod one; 62, connecting rod two; 63, moving slider two; 631, hinged shaft one; 64, hydraulic telescopic cylinder two; 7, air suction assembly; 71, main air suction pipeline; 72, auxiliary air suction pipeline; 73, air outlet; 74, air suction machine; 75, three-way hose; 76, rotary joint; 8, collection box; 9, partition; 91, opening; 92, sliding groove; 10, sliding cover; 101, sliding column; 102, connecting rod three; 103, moving slider three; 104, hinged shaft two; 105, connecting rod four; 106, connecting rod five; 107, mirror. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in combination with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] Embodiment: a hot plate welding machine welding sealing mechanism, such as Figure 1 , Figure 3As shown, including cabinet 1, respectively, the upper plastic part fixing device 2 and the lower plastic part fixing device 3 are arranged in the cabinet 1, and the plastic part heating device 4 is movably arranged in the cabinet 1, the plastic part heating device 4 is horizontally moved between the upper plastic part fixing device 2 and the lower plastic part fixing device 3, the upper plastic part fixing device 2 includes two lifting sliding blocks one 21 slidingly installed on both sides of the cabinet 1, two turnover shafts one 22 rotatably connected to both sides of the lifting sliding block one 21 of the cabinet 1, a turnover plate one 23 fixed to the turnover shaft one 22, and two upper positioning templates 24 fixed to the front and back of the turnover plate one 23; the lower plastic part fixing device 3 includes two lifting sliding blocks two 31 slidingly installed on both sides of the cabinet 1, two turnover shafts two 32 rotatably connected to both sides of the lifting sliding block two 31 of the cabinet 1, a turnover plate two 33 fixed to the turnover shaft two 32, and two lower positioning templates 34 fixed to the front and back of the turnover plate two 33; the plastic part heating device 4 includes a heating sliding plate 41 slidingly installed in the cabinet 1 and having a heating element built-in, an upper heating template 42 and a lower heating template 43 fixed to the front and back of the heating sliding plate 41, and a hydraulic telescopic cylinder one 44 fixedly installed in the cabinet 1 and driving the heating sliding plate 41 to slide; lifting assemblies 6 are installed on both sides of the cabinet 1 to drive the lifting sliding block one 21 and the lifting sliding block two 31 to slide up and down, and rotating assemblies 5 are installed on the lifting sliding block one 21 and the lifting sliding block two 31 to drive the turnover shaft one 22 and the turnover shaft two 32 to rotate; the upper positioning template 24 and the lower positioning template 34 are respectively provided with grooves corresponding to the plastic parts in the up-down direction, the upper heating template 42 and the lower heating template 43 are respectively provided with protrusions for heating the plastic parts, the grooves of the upper positioning template 24 and the protrusions of the upper heating template 42, and the grooves of the lower positioning template 34 and the protrusions of the lower heating template 43 correspond to each other, and the upper positioning template 24 and the lower positioning template 34 are provided with air suction assemblies 7 in the grooves for sucking the plastic parts;

[0036] When welding two pieces of plastic, first one of the pieces of plastic is placed in the groove of the upper positioning template 24 on the top of the turnover plate 23, and the other piece of plastic is placed in the groove of the lower positioning template 34 on the bottom of the turnover plate 33, then the control of the rotating assembly 5 drives the rotation of the turnover shaft 22 and the turnover shaft 32, so that the two upper positioning templates 24 of the turnover plate 23 or the two lower positioning templates 34 of the turnover plate 33 are exchanged in the up-down relationship, and the two pieces of plastic are converted from the opposite direction to the relative direction during the exchange, then the control of the hydraulic telescopic cylinder 44 pushes the heating slide plate 41 to slide, so that the upper heating template 42 of the heating slide plate 41 corresponds to the upper positioning template 24, and the lower heating template 43 corresponds to the lower positioning template 34, then the control of the lifting assembly 6 drives the downward sliding of the lifting slide block 21 and the upward sliding of the lifting slide block 31, so that the two pieces of plastic are clamped and fixed by the upper positioning template 24 and the upper heating template 42, and the lower positioning template 34 and the lower heating template 43, and at the same time are heated by the heating element built-in in the heating slide plate 41 for a period of time, after the plastic welding reaches a certain melting degree, the lifting assembly 6 and the hydraulic telescopic cylinder 44 are controlled again to pull back the heating template between the turnover plate 23 and the turnover plate 33, and finally the lifting assembly 6 drives the lifting slide block 21 and the lifting slide block 31 to further approach each other, so that the upper positioning template 24 and the lower positioning template 34 combine and clamp the upper and lower two pieces of plastic, and after a certain welding time and welding depth, the whole welding process is completed;

[0037] During the above heating and combining welding of the plastic pieces, the worker can again place new plastic pieces in the grooves of the upper positioning template 24 exchanged to the top of the turnover plate 23 and the lower positioning template 34 exchanged to the top of the turnover plate 33, after the welding of the previous round of plastic pieces is completed, the lifting mechanism will pull apart the distance between the turnover plate 23 and the turnover plate 33, and at the same time the rotating mechanism will drive the rotation of the turnover shaft 22 and the turnover shaft 32, so that the new plastic pieces replace the position of the just welded plastic pieces, and the welded plastic pieces will be exchanged to the lower side of the turnover plate 33 together with the lower positioning template 34, so as to be taken away by the worker;

[0038] The air suction assembly 7 can effectively suck the plastic parts placed in the recess of the template, not only can fix the plastic parts in the recess of the upper positioning template 24 and the lower positioning template 34 to achieve the effect of heating and combined welding, but also can prevent the plastic parts placed upside down from falling due to gravity. The cabinet 1 is provided with long strip sliding holes 11 on both sides for the sliding of the lifting sliding block one 21 and the lifting sliding block two 31. The lifting assembly 6 and the rotating assembly 5 are respectively located outside the cabinet 1. The cabinet 1 is fixedly provided with guide rails 12 on both sides of the heating sliding plate 41. The heating sliding plate 41 is provided with a moving sliding block one 411 slidably connected with the guide rails 12. The cabinet 1 can effectively save the internal space of the cabinet 1 and ensure the sliding stability of the heating sliding plate 41. The cabinet 1 is provided with a collecting box 8 for collecting plastic parts. The cabinet 1 is fixedly provided with a partition plate 9 between the plastic collecting box 8 and the turnover plate two 33. The partition plate 9 is provided with an opening 91 for the plastic parts to enter the collecting box 8. The opening 91 of the partition plate 9 is opposite to the lower positioning template 34 of the downward surface of the turnover plate two 33, which can facilitate the collection of the plastic parts after welding and processing.

[0039] As shown in Figure 3 、 Figure 5 The rotating assembly 5 includes a worm one 51 fixedly installed on the turnover shaft one 22, a worm two 52 fixedly installed on the turnover shaft two 32, a worm one 53 rotatably installed on the lifting sliding block one 21 and engaged with the worm one 51, a worm two 54 rotatably installed on the lifting sliding block two 31 and engaged with the worm two 52, a driving shaft 55 rotatably installed on the top of the cabinet 1 and parallel to the turnover shaft one 22 or the turnover shaft two 32, a driven shaft 56 rotatably installed in the long strip sliding hole 11 of the cabinet 1 and perpendicular to the driving shaft 55, two bevel gears one 57 fixedly installed on the upper end of the two driven shafts 56, two bevel gears two 58 fixedly installed on the driving shaft 55 and engaged with the two bevel gears one 57, a motor 59 fixedly installed on the cabinet 1 and driving the driving shaft 55 to rotate. The lifting sliding block one 21 and the lifting sliding block two 31 are respectively provided with cavities for installing the worm one 53 and the worm two 54. The turnover shaft one 22 and the turnover shaft two 32 rotatably pass through the cavities of the lifting sliding block one 21 and the lifting sliding block two 31, and the worm one 51 and the worm two 52 are respectively located in the cavities of the lifting sliding block one 21 and the lifting sliding block two 31. The worm one 53, the worm two 54 and the driven shaft 56 have the same axis, and the two ends of the worm one 53 and the worm two 54 rotatably pass through the cavities of the lifting sliding block one 21 and the lifting sliding block two 31. The worm one 53 and the worm two 54 are provided with through holes penetrating the two ends, and the driven shaft 56 slides through the through holes on the worm one 53 and the worm two 54. The outer surface of the driven shaft 56 and the inner surface of the through hole are respectively provided with a polygonal outer spline and a polygonal inner spline matched with each other.

[0040] When the rotation of the first overturning shaft 22 and the second overturning shaft 32 is required to be driven, the motor 59 first drives the driving shaft 55, so that the two bevel gears two 58 on the driving shaft 55 mesh with the bevel gears one 57 at the top of the two driven shafts 56. Since the driven shafts 56 slide through the through holes of the worm one 53 and the worm two 54, and the outer surfaces of the driven shafts 56 and the inner surfaces of the through holes are respectively provided with matching polygonal outer splines and polygonal inner splines, the driven shafts 56 will drive the worm one 53 and the worm two 54 to mesh with the worm gear one 51 in the cavity of the lifting slider one 21 and the worm gear two 52 in the cavity of the lifting slider two 31 to rotate. Finally, since the first overturning shaft 22 and the second overturning shaft 32 rotate through the cavities of the lifting slider one 21 and the lifting slider two 31 respectively, and are fixedly connected with the worm gear one 51 and the worm gear two 52 respectively, the first overturning shaft 22 and the second overturning shaft 32 will rotate synchronously with the worm gear one 51 and the worm gear two 52 respectively, so as to achieve the effect of exchanging the positions of the two upper positioning templates 24 of the first overturning plate 23 or the two lower positioning templates 34 of the second overturning plate 33. Since the driven shafts 56 slide through the through holes of the worm one 53 and the worm two 54 respectively, and the driven shafts 56 rotate vertically in the long strip sliding hole 11, the transmission between the driven shafts 56, the worm one 53 and the worm two 54 will not affect or interfere with the up and down sliding of the lifting slider one 21 and the lifting slider two 31.

[0041] As shown in Figure 2 The lifting assembly 6 includes two connecting rods one 61 respectively hinged to both ends of the first overturning shaft 22 and located on both sides of the cabinet 1, two connecting rods two 62 respectively hinged to both ends of the second overturning shaft 32 and located on both sides of the cabinet 1, two moving blocks two 63 respectively slidingly installed on both sides of the cabinet 1, and two hydraulic telescopic cylinders two 64 respectively fixedly installed on both sides of the cabinet 1. The moving blocks two 63 are fixedly provided with a hinge shaft one 631 and slide horizontally between the first overturning shaft 22 and the second overturning shaft 32. One end of each of the two connecting rods one 61 and the two connecting rods two 62 on the same side of the cabinet 1 is commonly hinged to the hinge shaft one 631 of the moving block. The piston rods of the two hydraulic telescopic cylinders two 64 are fixedly connected to the moving blocks two 63 on the same side of the cabinet 1. When the sliding of the lifting slider one 21 and the lifting slider two 31 is required to be driven, the two hydraulic telescopic cylinders two 64 on both sides of the cabinet 1 will simultaneously push the moving blocks two 63 connected to the front ends of the piston rods to slide. Then the connecting rods one 61 and the connecting rods two 62 hinged to the hinge shaft one 631 of the moving blocks two 63 will respectively push or pull the first overturning shaft 22 and the second overturning shaft 32 hinged to the other ends. Since the lifting slider one 21 and the lifting slider two 31 slide in the long strip sliding hole 11, and the first overturning shaft 22 and the second overturning shaft 32 rotate through the lifting slider one 21 and the lifting slider two 31 respectively, under the pulling or pushing of the connecting rods one 61 and the connecting rods two 62, the lifting slider one 21 and the first overturning shaft 22, and the lifting slider two 31 and the second overturning shaft 32 will slide towards or away from each other along the long strip sliding hole 11.

[0042] As Figure 4 shown, the air suction assembly 7 includes two main air suction pipes 71 respectively arranged inside the turning shaft one 22 and the turning shaft two 32, two auxiliary air suction pipes 72 respectively arranged inside the turning plate one 23 and the turning plate two 33 and having two ends respectively communicated with the main air suction pipe and the groove, two air outlets 73 respectively arranged at one end of the turning shaft one 22 and the turning shaft two 32 and communicated with the main air suction pipe 71, an air suction machine 74 fixedly installed at the bottom of the cabinet 1, a three-way hose 75 communicated with the two air outlets 73 and the air suction machine 74, and a rotary joint 76 installed between the three-way hose 75 and the air outlet 73. Through the air suction assembly 7, the stable adsorption and fixation of the plastic parts in all positioning mold grooves can be realized without affecting the rotation and lifting work of the turning plate one 23 and the turning plate two 33.

[0043] As Figure 2 , Figure 3 shown, the partition plate 9 is provided with a sliding groove 92 at one side of the opening 91, a sliding cover 10 is slidably arranged in the sliding groove 92, the front end of the sliding cover 10 extends out of the opening of the sliding groove 92, and two slide columns 101 are respectively fixedly arranged at both sides of the sliding cover 10 extending out of the opening of the sliding groove 92. Two long holes 13 parallel to the sliding plate are respectively arranged at both sides of the cabinet 1, one end of each of the two slide columns 101 is slidably arranged through the two long holes 13, and a connecting rod three 102 is respectively hingedly arranged. A moving sliding block three 103 is slidably arranged at both sides of the cabinet 1, a hinged shaft two 104 is fixedly arranged on the moving sliding block three 103, a connecting rod four 105 is hingedly arranged between the hinged shaft two 104 and the turning shaft one 22, and a connecting rod five 106 is hingedly arranged between the hinged shaft two 104 and the turning shaft two 32. One end of the connecting rod three 102 away from the slide column 101 is hingedly connected to the hinged shaft two 104 of the moving sliding block three 103. When the lifting assembly 6 controls the lifting sliding block one 21 and the lifting sliding block two 31 to be pulled apart or shortened, the connecting rod four 105 and the connecting rod five 106 hingedly connected to the turning shaft one 22 and the turning shaft two 32 will jointly pull the moving sliding block three 103 and the hinged shaft two 104 to slide horizontally. Then, the hinged shaft two 104 will pull the slide column 101 to slide in the long hole 13 through the connecting rod three 102. Finally, the sliding cover 10 connected to the slide column 101 will be retracted into or extended out of the sliding groove 92 at one side of the partition plate 9, thereby realizing the automatic opening or closing of the opening 91 of the partition plate 9 under different conditions.

[0044] When the plastic part welded in the lower positioning template 34 under the bottom of the turnover plate two 33 is taken out, the sliding cover 10 will automatically retract into the opening 91 of the sliding groove 92 under the action of the connecting rod structure, so that the workers can put the plastic part into the collection box 8, because the lifting slider one 21 and the lifting slider two 31 have been pulled apart to ensure the stable rotation of the turnover plate one 23 and the turnover plate two 33. When the new plastic part is placed in the lower positioning template 34 under the bottom of the turnover plate two 33, the sliding cover 10 will automatically extend out of the opening 91 of the sliding groove 92 under the action of the connecting rod mechanism, so as to avoid the workers from accidentally dropping the plastic part into the collection box 8 during the placement of the new plastic part, because the lifting slider one 21 and the lifting slider two 31 have been shortened to a certain distance for heating and welding the previous round of plastic parts. The cabinet 1 is provided with guide grooves 14 on both sides for the sliding of the moving slider two 63 and the moving slider three 103, the middle part of the guide groove 14 is penetrated by a long sliding hole 11, and the moving slider two 63 and the moving slider three 103 are symmetrically located on both sides of the long sliding hole 11, which can effectively ensure the stable sliding of the moving slider one 411 and the moving slider two 63. The side of the sliding cover 10 facing the turnover plate two 33 is provided with a mirror 107, which can be used by workers to observe the lower positioning template 34 under the bottom of the turnover plate two 33 when the sliding cover 10 closes the opening 91 of the partition 9, thereby facilitating the workers to quickly place the new plastic part.

Claims

1. A hot plate welding machine welding sealing mechanism, comprising a cabinet (1), an upper plastic part fixing device (2) and a lower plastic part fixing device (3) respectively arranged in the cabinet (1) in a liftable manner, and a plastic part heating device (4) movably arranged in the cabinet (1), wherein the plastic part heating device (4) is horizontally movable between the upper plastic part fixing device (2) and the lower plastic part fixing device (3), characterized in that, The upper plastic part fixing device (2) comprises two lifting sliding blocks one (21) slidingly installed on the two sides of the cabinet (1), two overturning shafts one (22) rotationally connected to the two lifting sliding blocks one (21) on the two sides of the cabinet (1), an overturning plate one (23) fixed on the overturning shaft one (22), and two upper positioning templates (24) fixed on the front and back surfaces of the overturning plate one (23), respectively. The lower plastic part fixing device (3) comprises two lifting sliding blocks two (31) slidingly installed on the two sides of the cabinet (1), two overturning shafts two (32) rotationally connected to the two lifting sliding blocks two (31) on the two sides of the cabinet (1), an overturning plate two (33) fixed on the overturning shaft two (32), and two lower positioning templates (34) fixed on the front and back surfaces of the overturning plate two (33), respectively. The cabinet (1) is provided with a lifting assembly (6) on the two sides for driving the lifting sliding blocks one (21) and the lifting sliding blocks two (31) to slide up and down, and the lifting sliding blocks one (21) and the lifting sliding blocks two (31) are respectively provided with a rotating assembly (5) for driving the overturning shaft one (22) and the overturning shaft two (32) to rotate. The cabinet (1) is provided with a lifting assembly (6) on the two sides for driving the lifting sliding blocks one (21) and the lifting sliding blocks two (31) to slide up and down, and the lifting sliding blocks one (21) and the lifting sliding blocks two (31) are respectively provided with a rotating assembly (5) for driving the overturning shaft one (22) and the overturning shaft two (32) to rotate. The cabinet (1) is provided with a lifting assembly (6) on the two sides for driving the lifting sliding blocks one (21) and the lifting sliding blocks two (31) to slide up and down, and the lifting sliding blocks one (21) and the lifting sliding blocks two (31) are respectively provided with a rotating assembly (5) for driving the overturning shaft one (22) and the overturning shaft two (32) to rotate. The cabinet (1) is provided with a lifting assembly (6) on the two sides for driving the lifting sliding blocks one (21) and the lifting sliding blocks two (31) to slide up and down, and the lifting sliding blocks one (21) and the lifting sliding blocks two (31) are respectively provided with a rotating assembly (5) for driving the overturning shaft one (22) and the overturning shaft two (32) to rotate. The cabinet (1) is provided with a lifting assembly (6) on the two sides for driving the lifting sliding blocks one (21) and the lifting sliding blocks two (31) to slide up and down, and the lifting sliding blocks one (21) and the lifting sliding blocks two (31) are respectively provided with a rotating assembly (5) for driving the overturning shaft one (22) and the overturning shaft two (32) to rotate. The lifting assembly (6) comprises two connecting rods one (61) respectively hinged to two ends of the overturning shaft one (22) and located at two sides of the cabinet (1), two connecting rods two (62) respectively hinged to two ends of the overturning shaft two (32) and located at two sides of the cabinet (1), two moving sliders two (63) respectively slidingly installed at two sides of the cabinet (1), and two hydraulic telescopic cylinders two (64) respectively fixedly installed at two sides of the cabinet (1), the moving slider two (63) is fixedly provided with a hinge shaft one (631), and is located at the middle of the overturning shaft one (22) and the overturning shaft two (32) and slides horizontally, one end of the two connecting rods one (61) and the two connecting rods two (62) at the same side of the cabinet (1) are respectively hingedly connected to the hinge shaft one (631) on the moving slider, and the piston rod of the hydraulic telescopic cylinder two (64) is fixedly connected to the moving slider two (63) at the same side of the cabinet (1); The cabinet (1) is provided with a collecting box (8) for collecting plastic parts at the bottom, the cabinet (1) is provided with a partition plate (9) between the plastic collecting box (8) and the overturning plate two (33), the partition plate (9) is provided with an opening (91) for the plastic parts to enter the collecting box (8), and the opening (91) of the partition plate (9) is opposite to the lower positioning template (34) on the downward surface of the overturning plate two (33); The partition plate (9) is provided with a sliding groove (92) on one side of the opening (91), the sliding groove (92) is slidingly provided with a sliding cover (10), the front end of the sliding cover (10) extends out of the sliding groove (92), and the two sides of the sliding cover (10) extending out of the sliding groove (92) are respectively provided with a sliding column (101), the cabinet (1) is provided with two long holes (13) for parallel sliding plates on two sides, one end of the two sliding columns (101) respectively slidingly passes through the two long holes (13), and is respectively hingedly provided with a connecting rod three (102), the cabinet (1) is further provided with a moving slider three (103) slidingly arranged on two sides, the moving slider three (103) is fixedly provided with a hinge shaft two (104), the hinge shaft two (104) and the overturning shaft one (22) are hingedly connected with a connecting rod four (105), the hinge shaft two (104) and the overturning shaft two (32) are hingedly connected with a connecting rod five (106), and one end of the connecting rod three (102) away from the sliding column (101) is hingedly connected to the hinge shaft two (104) of the moving slider three (103).

2. A hot plate sealer according to claim 1, wherein: The rotating assembly (5) comprises a worm wheel I (51) fixedly installed on the turnover shaft I (22), a worm wheel II (52) fixedly installed on the turnover shaft II (32), a worm I (53) rotatably installed on the lifting slider I (21) and engaged with the worm wheel I (51), a worm II (54) rotatably installed on the lifting slider II (31) and engaged with the worm wheel II (52), a driving shaft (55) rotatably installed on the top of the cabinet (1) and parallel to the turnover shaft I (22) or the turnover shaft II (32), a driven shaft (56) rotatably installed in the long strip sliding hole (11) on both sides of the cabinet (1) and perpendicular to the driving shaft (55), two bevel gears I (57) fixedly installed on the upper ends of the two driven shafts (56), two bevel gears II (58) fixedly installed on the driving shaft (55) and engaged with the two bevel gears I (57), respectively, a motor (59) fixedly installed on the cabinet (1) and driving the driving shaft (55) to rotate, and cavities for installing the worm I (53) and the worm II (54) are formed in the lifting slider I (21) and the lifting slider II (31), respectively, the turnover shaft I (22) and the turnover shaft II (32) rotatably pass through the cavities of the lifting slider I (21) and the lifting slider II (31), respectively, and the worm wheel I (51) and the worm wheel II (52) are located in the cavities of the lifting slider I (21) and the lifting slider II (31), respectively, the worm I (53), the worm II (54) and the driven shaft (56) have coaxial shafts, and the two ends of the worm I (53) and the worm II (54) rotatably pass through the cavities of the lifting slider I (21) and the lifting slider II (31), respectively, the worm I (53) and the worm II (54) are provided with through holes penetrating the two ends, and the driven shaft (56) slides through the through holes on the worm I (53) and the worm II (54), and the outer surface of the driven shaft (56) and the inner surface of the through hole are provided with matched polygonal external spline and polygonal internal spline, respectively.

3. The hot plate sealer of claim 1, wherein: The air suction assembly (7) comprises two main air suction pipelines (71) formed in the turnover shaft I (22) and the turnover shaft II (32), respectively, two auxiliary air suction pipelines (72) formed in the turnover plate I (23) and the turnover plate II (33) and having two ends communicated with the main air suction pipeline and the groove, respectively, two air outlets (73) formed in one end of the turnover shaft I (22) and the turnover shaft II (32) and communicated with the main air suction pipeline (71), an air suction machine (74) fixedly installed on the bottom of the cabinet (1), and a three-way hose (75) communicated with the two air outlets (73) and the air suction machine (74), wherein a rotary joint (76) is installed between the three-way hose (75) and the air outlet (73).

4. The hot plate sealer of claim 1, wherein: Long strip sliding holes (11) are formed in the middle of the guide grooves (14) on both sides of the cabinet (1), and the mobile slider II (63) and the mobile slider III (103) are symmetrically located on both sides of the long strip sliding hole (11).

5. The hot plate sealer of claim 1, wherein: A mirror (107) is installed on one side of the turnover plate II (33) facing the sliding cover (10).

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