CN212499011U - Hot gas welding plastic welding equipment - Google Patents
Hot gas welding plastic welding equipment Download PDFInfo
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- CN212499011U CN212499011U CN202021555926.4U CN202021555926U CN212499011U CN 212499011 U CN212499011 U CN 212499011U CN 202021555926 U CN202021555926 U CN 202021555926U CN 212499011 U CN212499011 U CN 212499011U
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Abstract
The utility model provides a hot gas welding plastics welding equipment, the on-line screen storage device comprises a base, be provided with first support body on the base, the second support body, the third support body, the fourth support body, be provided with down slip table and last slip table on first support body and the second support body, the slip table upper end that slides down is provided with mould anchor clamps, goes up the slip table lower extreme and is provided with lower mould anchor clamps, is provided with the well slip table that is used for occupying or dodging down slip table and last slip table and spatial position between the slip table on third support body and the fourth frame, is provided with the well mould in the nitrogen gas heating on the well slip. When utilizing hot gas welding plastics welding equipment to weld, do not have the hot plate and weld the not good problem of welding quality after being polluted by the working of plastics in the hot plate welding, there is the clastic problem of friction among the no vibrations friction weld process, utilize the nitrogen gas of heating to weld after heating to welding temperature to the face of weld of last working of plastics and lower working of plastics, than laser welding with low costs to as long as the working of plastics all can weld through this equipment, enlarged the application range of equipment.
Description
Technical Field
The utility model belongs to the technical field of welding equipment, concretely relates to hot gas welding plastics welding equipment.
Background
The existing plastic welding method mainly comprises hot plate welding, vibration friction welding, laser welding and the like, wherein the hot plate welding is to melt a plastic piece by contacting a heating plate with the plastic piece; the vibration friction welding is to load certain axial pressure on the welding surfaces of two plastic parts, the welding surfaces of the two plastic parts are welded together through friction heat generated by violent friction movement, and because the friction is violent, a lot of plastic scraps are usually found to fall off due to the friction of the welding surfaces of the two plastic parts after the welding is finished, and the scraps can scatter on a tool or are bonded on the welding surfaces of the plastic parts and are difficult to be completely removed, so that the vibration friction welding has great influence on products, and great noise can be generated in the welding process, so that certain damage is caused to the health of operators; laser welding adopts lower pressure crimping together with the face of weld of two kinds of working of plastics earlier, then through the strong radiation wave of the boundling that laser produced, melt the working of plastics face of weld, thereby be in the same place two working of plastics welding, laser welding has certain requirement to the material of working of plastics, two kinds of working of plastics that weld together, the material of a working of plastics must be transparent to laser, the material of another kind of working of plastics is opaque to laser, just so can realize laser welding, and laser welding's cost is higher.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the background art, the utility model provides a hot gas welding plastics welding equipment.
The technical scheme of the utility model as follows:
a hot gas welding plastic welding device comprises a base, wherein a first frame body and a second frame body which are identical in structure and symmetrically arranged are fixedly installed on two sides of the front end of the base, a lower sliding table and an upper sliding table which can move up and down are sequentially arranged between the first frame body and the second frame body from bottom to top, a lower die clamp for fixing a lower plastic piece is installed at the upper end of the lower sliding table, and an upper die clamp for fixing an upper plastic piece is installed at the lower end of the upper sliding table; the nitrogen heating middle die is characterized in that a third frame body and a fourth frame body which have the same structure and are symmetrically arranged are fixedly arranged on two sides of the rear end of the base, middle sliding tables used for occupying or avoiding space positions between the lower sliding table and the upper sliding table are arranged on the third frame body and the fourth frame body, the middle sliding tables can move back and forth along the base, a nitrogen heating middle die used for heating the welding surface of the upper plastic piece and the welding surface of the lower plastic piece is arranged on the middle sliding tables, and the nitrogen heating middle die is used for conveying nitrogen through a nitrogen control device;
the lower sliding table comprises a lower frame body, two ends of the lower frame body are slidably mounted on sliding rails through sliding blocks, the sliding rails are fixedly mounted on a first frame body and a second frame body respectively, the sliding rails are perpendicular to the base, a lower mounting plate is fixedly mounted at the upper end of the lower frame body, a positioning hole and a bolt hole are formed in the lower mounting plate, and the lower frame body is driven to slide through a lower driving device; the upper sliding table comprises an upper frame body, two ends of the upper frame body are slidably mounted on the sliding rails through sliding blocks, an upper mounting plate is fixedly mounted at the lower end of the upper frame body, and the upper sliding table is driven to slide through an upper driving device;
the middle sliding table comprises a left mounting plate and a right mounting plate, the bottom end of the left mounting plate is slidably mounted on a left sliding rail through a sliding block, the left sliding rail is fixedly mounted on an upper end beam of the third frame body, and the left mounting plate is driven to slide through a left driving device; the bottom of right side mounting panel passes through slider slidable mounting on right slide rail, right slide rail fixed mounting is on the upper end crossbeam of fourth support body, the right side mounting panel slides through the drive of right drive arrangement.
Preferably, the lower die clamp comprises a lower die base plate, a positioning pin matched with a positioning hole in the lower mounting plate is installed at the front end of the lower die base plate, a locking hand button matched with a bolt hole in the lower mounting plate is installed at the corner of the lower die base plate, a fixing column is fixedly installed on the lower die base plate, a lower die plate is fixedly installed on the fixing column, at least three guide sleeves are fixedly installed on the lower die plate, a lower die positioning piece is fixedly installed on the lower die plate, two lower die clamping cylinders are fixedly installed on two sides of the bottom end of the lower die plate, telescopic ends of the two lower die clamping cylinders are respectively fixedly connected with the two lower die clamping blocks through connecting pieces, and a lower plastic piece is clamped and fixed through the relative movement of the two lower;
the upper die clamp comprises an upper die plate, guide pillars with the same number and positions as those of the guide sleeves are fixedly mounted at the lower end of the upper die plate, the upper die plate is fixedly mounted on an upper mounting plate through at least four upper die fixing pieces which are bilaterally symmetrical, an upper die positioning piece is fixedly mounted at the lower end of the upper die plate, two upper die clamping cylinders are arranged on two sides of the upper die positioning piece, the two upper die clamping cylinders are arranged on the upper die plate, and an upper plastic piece is clamped and fixed through the combined action of the movement of the two upper die clamping cylinders and the upper die;
the middle mould heating device comprises a sealing box, a heating pipe is arranged in the sealing box, a gas needle is arranged on the sealing box, the gas needle penetrates through the sealing box, middle mould mounting plates are fixedly mounted on two sides of the sealing box, two sides of the middle mould mounting plates are respectively fixedly mounted on a left side mounting plate and a right side mounting plate through middle mould fixing parts, at least two nitrogen conveying pipes are mounted on the middle mould mounting plate on one side, the output end of each nitrogen conveying pipe is connected with the gas needle after passing through the sealing box, the input end of each nitrogen conveying pipe is connected with a nitrogen control device, the nitrogen control device comprises a pressure reducing valve connected with the output end of a nitrogen making machine, the output end of each pressure reducing valve is connected with a gas distributing block, the gas distributing block is provided with output pipelines with the same number as the nitrogen conveying pipes, the nitrogen after passing through the flowmeter flows into a nitrogen conveying pipe.
Preferably, the upper driving device comprises an upper servo motor fixedly mounted on a servo motor mounting plate, the servo motor mounting plate is arranged above the upper sliding table, and two ends of the servo motor mounting plate are fixedly mounted on the first frame body and the second frame body;
the lower driving device comprises a lower servo motor fixedly arranged on the base, an output shaft of the lower servo motor is connected with an input shaft of a lower T-shaped speed reducing motor, output shafts at two ends of the lower T-shaped speed reducing motor are respectively connected with input shafts of two lower right-angle speed reducing motors through a coupler and a connecting shaft, the two lower right-angle speed reducing motors are fixedly arranged on the base, output shafts of the two lower right-angle speed reducing motors are respectively and fixedly connected with two lower ball screws, nuts of the two lower ball screws are fixedly arranged on the lower frame body, the other ends of the two lower ball screws are rotatably arranged in lower screw mounting seats, and the lower screw mounting seats are fixedly arranged on the first frame body and the second frame body;
the left driving device comprises a left ball screw, one end of the left ball screw is fixedly provided with a synchronous belt pulley, one end of the left ball screw with the synchronous belt pulley is rotatably arranged in the mounting seat, the mounting seat of the left ball screw is fixedly arranged on an upper end beam of the third frame body and is arranged at the rear end of the third frame body, and a nut of the left ball screw is fixedly connected onto the left mounting plate through a left connecting strip;
the right driving device comprises a right ball screw, one end of the right ball screw is fixedly provided with a synchronous pulley, one end of the right ball screw with the synchronous pulley is rotatably arranged in the mounting seat, the mounting seat of the right ball screw is fixedly arranged on the upper end beam of the fourth frame body and is arranged at the rear end of the fourth frame body, and the nut of the right ball screw is fixedly connected to the right mounting plate through a right connecting strip;
the synchronous belt pulley of left side ball one end meshes on a synchronous belt with the synchronous belt pulley of right ball one end jointly, still mesh on the synchronous belt and install synchronous belt's servo motor, servo motor fixed mounting is on the third support body.
Preferably, the lower sliding table further comprises a lower anti-drop device and a lower displacement detection device, the lower anti-drop device comprises a lower stop cylinder, the lower stop cylinder is fixedly mounted on the lower frame body between the second frame body and the lower mounting plate, a telescopic end of the lower stop cylinder is fixedly provided with a lower stop clamping plate, the lower stop clamping plate is slidably mounted on a lower stop sliding rail through a sliding block, the lower stop sliding rail is fixedly mounted on the lower frame body, when the telescopic end of the lower stop cylinder extends out, the lower stop clamping plate is driven to move from the lower frame body to the second frame body until the lower stop clamping plate is clamped on a stop shaft with a plurality of clamping steps, and the stop shaft is fixedly mounted on the second frame body and perpendicular to the base; the lower displacement detection device comprises a lower displacement sensor, the lower displacement sensor is fixedly arranged on the first frame body and is perpendicular to the base, a lower displacement sensor sliding block is slidably arranged on the lower displacement sensor, and the lower displacement sensor sliding block is fixedly connected to the lower frame body through a lower sensor connecting plate;
the upper sliding table further comprises an upper anti-falling device and an upper displacement detection device, the upper anti-falling device comprises an upper stop cylinder, the upper stop cylinder is fixedly mounted on the upper frame body between the second frame body and the upper mounting plate, an upper stop clamping plate is fixedly mounted on the telescopic end of the upper stop cylinder, the upper stop clamping plate is slidably mounted on an upper stop sliding rail through a sliding block, the upper stop sliding rail is fixedly mounted on the upper frame body, and when the telescopic end of the upper stop cylinder extends out, the upper stop clamping plate is driven to move from the upper frame body to the second frame body until the upper stop clamping plate is clamped on the stop shaft; the upper displacement detection device comprises an upper displacement sensor, the upper displacement sensor is fixedly installed on the first frame body and perpendicular to the base, an upper displacement sensor sliding block is installed on the upper displacement sensor in a sliding mode, and the upper displacement sensor sliding block is fixedly connected to the upper frame body through an upper sensor connecting plate.
As preferred, lower mould mobile device is all installed at both ends about the lower mould bottom plate, lower mould mobile device includes two fixing bases of fixed mounting on the lower mould bottom plate, two all be provided with the cam in the mounting hole of fixing base, two fixing base and two the equal fixed mounting of cam is in a pivot, the one end fixed mounting of pivot has the pivot handle, slidable mounting has the pivot slider in the fixing base of cam below, the gyro wheel is installed to the below of pivot slider.
As preferred, the base rear end intermediate position has been seted up and has been dodged the district, dodge the district and set up between third support body and fourth support body, dodge and be used for depositing hydraulic lift truck in the district, be provided with the retooling frock that is used for changing mould in the nitrogen gas heating on the hydraulic lift truck, the retooling frock includes the frock bottom plate with the contact of hydraulic lift truck, the frock stand is installed perpendicularly to the corner of frock bottom plate, frock stand upper end fixed mounting has the frock roof, the intermediate position of frock roof has been seted up and has been dodged the through-hole, be provided with a plurality of spacing archs on the frock roof.
As preferred, be provided with the outer frame body on the base, the outer frame body covers first support body, second support body, third support body, fourth support body, the electric rolling shutter door of being convenient for to push hydraulic lift car is installed at the rear of outer frame body, the electric cabinet is installed to the side of outer frame body, the tower lamp that is used for air discharge fan and display device running state is installed to the upper end of outer frame body, the air discharge fan is connected with the air pipe of factory, pneumatic emergency exit is installed to the front end of outer frame body, install safe correlation grating on the emergency exit outer frame body all around, the operation touch screen is still installed to the front end of outer frame body.
Preferably, the guide pillar of the upper die clamp is a conical guide pillar, the guide sleeve of the lower die clamp is a conical guide sleeve, the conical guide pillar is fixedly mounted at the lower end of the upper die plate through a guide pillar support, and the free end of the conical guide pillar is provided with a conical head which is in mutual contact with the lower die clamp during die assembly; the taper guide sleeve comprises a guide sleeve positioning seat fixedly mounted on the lower die plate, a cushion block with a screw hole is fixedly mounted at the bottom end inside the guide sleeve positioning seat, a sliding guide sleeve is matched in the taper guide sleeve, a taper mounting hole matched with a taper head of the taper guide pillar is formed in the upper end of the sliding guide sleeve, a screw mounting hole is formed in the sliding guide sleeve below the taper mounting hole, a screw is mounted in the screw mounting hole, a spring is sleeved on the screw and is arranged in the sliding guide sleeve, and when the spring is in a relaxation state, the lower end of the sliding guide sleeve is in a suspension state.
Preferably, the lower die base plate is further fixedly provided with two handles, and the two handles are arranged at the front end of the lower die base plate.
The utility model has the advantages as follows:
(1) the utility model provides a hot gas welding plastic welding equipment, do not need working of plastics and hot plate contact, the hot plate is polluted the not good problem of back welding quality by the working of plastics in not having the hot plate to weld, do not need to carry out violent friction between the working of plastics, there is not the clastic problem of friction among the vibrations friction welding process, utilize the nitrogen gas of heating to heat welding temperature postwelding to the face of weld of last working of plastics and lower working of plastics, than laser welding's with low costs, and the working of plastics all can weld as long as it is all through this equipment, the application range of equipment has been enlarged.
(2) The utility model provides a hot gas welding plastics welding equipment, wherein go up drive arrangement and drive arrangement all sets up in the periphery down, do not occupy the welding space, it is connected with last mould anchor clamps through last mould mounting to go up the slip table simultaneously, mould anchor clamps are gone up in convenient dismantlement change, adopt servo motor to pass through gear motor and drive ball pivoted mode, the rising or the decline that last slip table and lower slip table can be steady have been guaranteed, utilize one to go up servo motor and drive the slip table motion, the uniformity of going up the slip table left and right sides motion process has been guaranteed, utilize one to drive slip table motion down under the servo motor drive, the uniformity of lower slip table left and right sides motion process has been guaranteed.
(3) The utility model provides a hot gas welding plastics welding equipment adopts the form of mechanical cardboard, and locking force is big, can prevent to drop because of the accident at the in-process of last slip table and the static or motion of lower slip table. In addition, an upper displacement detection device for detecting displacement of the upper sliding table and a lower displacement detection device for detecting displacement of the lower sliding table are further arranged, whether the displacement conditions of the upper sliding table and the lower sliding table are the same as preset displacement or not is monitored in real time, operation of the welding equipment can be immediately stopped if deviation exists, and safety of the welding equipment is further guaranteed.
(4) The utility model provides a hot gas welding plastics welding equipment places hydraulic lift truck and retooling frock inside the outer frame body, be convenient for accomodate, and simultaneously, this equipment has high flexibility, can carry out the welding demand of change in the nitrogen gas heating with the adaptation different form product through the retooling frock, wherein lower mould anchor clamps set to can pull removal type, go on pulling of lower mould anchor clamps behind mould anchor clamps and the lower mould anchor clamps compound die through the cooperation between handle and the gyro wheel, pull the in-process and make sliding friction become rolling friction, make things convenient for the retooling, the retooling man-hour and the retooling manpower have been saved.
(5) The utility model provides a hot gas welding plastics welding equipment, utilize nitrogen gas that nitrogen making machine will prepare to flow in the nitrogen gas heating well mould after through the pressure and the flow of nitrogen gas controlling means control nitrogen gas, wherein the seal box in the mould in the nitrogen gas heating has reduced the thermal loss of heating tube, heating rate has been promoted, the gas needle link up seal box simultaneously, conveniently carry on the heating of working of plastics face of weld of upper and lower side, utilize nitrogen gas to carry out the heating of plastics in addition, the oxidation that air heating appears has been avoided taking place, the welding quality is improved.
(6) The utility model provides a hot gas welding plastics welding equipment, electric cabinet and last servo motor, lower servo motor, operation touch screen, tower lamp, emergency exit and safe correlation grating electricity are connected, carry out the control of this equipment operation process through the operation touch screen, save operating personnel quantity. Show green when the tower lamp, this equipment operation is normal, shows red when the tower lamp, and this equipment trouble shows yellow when the tower lamp, and this equipment gets into the debugging stage, makes things convenient for management and maintenance personal to observe the equipment condition at a distance and in time handles the equipment problem.
Drawings
Other objects and results of the invention will be more apparent and readily appreciated by reference to the following description taken in conjunction with the accompanying drawings, and as the invention is more fully understood. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is another angle structure diagram of fig. 1.
Fig. 4 is a schematic structural view of the utility model with the outer frame hidden.
Fig. 5 is an assembly diagram of the upper sliding table, the lower sliding table, the first frame body and the second frame body of the present invention.
Fig. 6 is a front view of fig. 5.
Fig. 7 is an enlarged view of a portion a in fig. 5.
Fig. 8 is an enlarged view at B in fig. 5.
Fig. 9 is an enlarged view at C in fig. 5.
Fig. 10 is an enlarged view at D in fig. 5.
Fig. 11 is an assembly schematic diagram of the third frame body, the fourth frame body, the middle sliding table and the nitrogen heating middle mold of the present invention.
Fig. 12 is an exploded view of the third frame, the fourth frame and the middle slide table of the present invention.
Fig. 13 is a schematic structural view of the upper die clamp of the present invention.
Fig. 14 is a schematic structural view of the middle and lower mold clamping apparatus of the present invention.
Fig. 15 is another angular configuration of fig. 14.
Fig. 16 is a schematic structural view of the middle mold in nitrogen heating according to the present invention.
Fig. 17 is a front view of fig. 16.
Fig. 18 is a top view of fig. 16.
Fig. 19 is a schematic structural diagram of the nitrogen gas control device of the present invention.
Fig. 20 is a schematic structural view of the middle die changing tool of the present invention.
Fig. 21 is a cross-sectional view of the guide sleeve of the middle and lower mold clamp of the present invention.
Wherein the reference numerals are: comprises a base 1, a lower sliding table 2, an upper sliding table 3, a lower die clamp 4, an upper die clamp 5, a nitrogen heating middle die 7, a nitrogen control device 8, an outer frame 9, a first frame 101, a second frame 102, a third frame 103, a fourth frame 104, an avoidance area 105, a hydraulic lift truck 106, a die changing tool 107, a tool bottom plate 108, a tool upright 109, a tool top plate 110, an avoidance through hole 111, a limit bulge 112, a lower frame 201, a slide rail 202, a lower mounting plate 203, a lower servo motor 204, a lower ball screw 205, a lower anti-falling device 206, a lower displacement detection device 207, a lower stop cylinder 208, a lower stop clamping plate 209, a lower stop slide 210, a stop shaft 211, a lower displacement sensor 212, a lower displacement sensor slide block 213, a lower sensor connecting plate 214, an upper frame 301, an upper mounting plate 302, an upper servo motor 303, an upper ball screw 304, an upper anti-falling device 305, an upper displacement detection device, An upper stop cylinder 307, an upper stop clamping plate 308, an upper stop sliding rail 309, an upper displacement sensor 310, an upper displacement sensor sliding block 311, an upper sensor connecting plate 312, a lower die bottom plate 401, a conical guide sleeve 402, a guide sleeve positioning seat 402-1, a cushion block 402-2, a sliding guide sleeve 402-3, a conical mounting hole 402-4, a screw 402-5, a spring 402-6, a positioning pin 403, a locking knob 404, a fixing column 405, a lower die plate 406, a lower die positioning piece 407, a lower die clamping cylinder 408, a lower die clamping block 409, a lower die moving device, a fixing seat 410, a cam 411, a rotating shaft handle, a rotating shaft sliding block 413, a roller 414, a handle 415, an upper die plate 501, a conical guide pillar 502, a conical head 502-1, a guide pillar support 502-2, an upper die fixing piece 503, an upper die positioning piece 504, an upper die clamping cylinder 505, The device comprises a right side mounting plate 602, a left slide rail 603, a left driving device, a right slide rail 604, a left ball screw 605, a left connecting strip 606, a right ball screw 607, a right connecting strip 608, a toothed belt 609, a servo motor 610, a shield 611, a seal box 701, a heating pipe 702, a gas needle 703, a middle mold mounting plate 704, a middle mold fixing part 705, a nitrogen conveying pipe 706, a nitrogen generator 801, a pressure reducing valve 802, a gas distributing block 803, a throttle valve 804, a flow meter 805, an electric rolling door 901, an electric cabinet 902, an exhaust fan 903, a tower lamp 904, a safety door 905, a safety correlation grating 906 and an operation touch screen 907.
Detailed Description
In order to make the technical solution and advantages of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.
Referring to fig. 2 to 4: the hot gas welding plastic welding equipment comprises a base 1, wherein a first frame body 101 and a second frame body 102 which are identical in structure and symmetrically arranged are fixedly installed on two sides of the front end of the base 1, a lower sliding table 2 and an upper sliding table 3 which can move up and down are sequentially arranged between the first frame body 101 and the second frame body 102 from bottom to top, a lower die clamp 4 for fixing lower plastic pieces is installed at the upper end of the lower sliding table 2, and an upper die clamp 5 for fixing upper plastic pieces is installed at the lower end of the upper sliding table 3; base 1's rear end both sides fixed mounting has the same and symmetry third support body 103 and the fourth support body 104 that sets up of structure, be provided with on third support body 103 and the fourth support body 104 and be used for occupying or dodging down the slip table 2 and go up the well slip table of spatial position between the slip table 3, well slip table can carry out the back-and-forth movement along base 1, install on the well slip table and be used for heating the nitrogen gas heating well mould 7 of working of plastics welded surface and working of plastics welded surface down, nitrogen gas is carried through nitrogen gas controlling means 8 to well mould 7 in the nitrogen gas heating.
Referring to FIG. 6: the lower sliding table 2 comprises a lower frame body 201, two ends of the lower frame body 201 are slidably mounted on sliding rails 202 through sliding blocks, the sliding rails 202 are respectively fixedly mounted on the first frame body 101 and the second frame body 102, a lower mounting plate 203 is fixedly mounted at the upper end of the lower frame body 201, a positioning hole and a bolt hole are formed in the lower mounting plate 203, the lower frame body 201 is driven to slide through a lower driving device, the lower driving device comprises a lower servo motor 204 fixedly mounted on the base 1, an output shaft of the lower servo motor 204 is connected with an input shaft of a lower T-shaped speed reducing motor, output shafts at two ends of the lower T-shaped speed reducing motor are respectively connected with input shafts of two lower right-angle speed reducing motors through a coupler and a connecting shaft, the two lower right-angle speed reducing motors are fixedly mounted on the base 1, output shafts of the two lower right-angle speed reducing motors are respectively fixedly connected with two lower ball screws 205, the other ends of the two lower ball screws 205 are rotatably mounted in lower screw mounting seats which are fixedly mounted on the first frame body 101 and the second frame body 102.
Referring to fig. 5, 8 and 10: the lower sliding table 2 further comprises a lower anti-falling device 206 and a lower displacement detection device 207, the lower anti-falling device 206 comprises a lower stop cylinder 208, the lower stop cylinder 208 is fixedly mounted on the lower frame body 201 between the second frame body 102 and the lower mounting plate 203, a lower stop clamping plate 209 is fixedly mounted on a telescopic end of the lower stop cylinder 208, the lower stop clamping plate 209 is slidably mounted on a lower stop sliding rail 210 through a sliding block, the lower stop sliding rail 210 is fixedly mounted on the lower frame body 201, when the telescopic end of the lower stop cylinder 208 extends out, the lower stop clamping plate 209 is driven to move from the lower frame body 201 to the second frame body 102 until the lower stop clamping plate 209 is clamped on a stop shaft 211 with a plurality of clamping steps, and the stop shaft 211 is fixedly mounted on the second frame body 102 and is perpendicular to the; lower displacement detection device 207 includes displacement sensor 212 down, and lower displacement sensor 212 fixed mounting is perpendicular to base 1 setting on first support body 101, and slidable mounting has lower displacement sensor slider 213 on lower displacement sensor 212, and lower displacement sensor slider 213 is through sensor connecting plate 214 fixed connection under on support body 201.
Referring to fig. 5 and 6: the upper sliding table 3 comprises an upper frame body 301, two ends of the upper frame body 301 are slidably mounted on the sliding rails 202 through sliding blocks, an upper mounting plate 302 is fixedly mounted at the lower end of the upper frame body 301, the upper sliding table 3 is driven to slide through an upper driving device, the upper driving device comprises an upper servo motor 303 fixedly mounted on the servo motor mounting plate, the servo motor mounting plate is arranged above the upper sliding table 3, two ends of the servo motor mounting plate are fixedly mounted on the first frame body 101 and the second frame body 102, an output shaft of the upper servo motor 303 is connected with input shafts of upper T-shaped speed reducing motors, output shafts of the upper T-shaped speed reducing motors are respectively connected with input shafts of two upper right-angle speed reducing motors through a coupler and a connecting shaft, the two upper right-angle speed reducing motors are fixedly mounted on the servo motor mounting plate, output shafts of the two upper right-angle speed reducing motors are respectively fixedly connected with two upper, the other ends of the two upper ball screws 304 are rotatably mounted in the upper screw mounting seats, and the upper screw mounting seats are fixedly mounted on the first frame body 101 and the second frame body 102.
Referring to fig. 5, 7 and 9: the upper sliding table 3 further comprises an upper anti-drop device 305 and an upper displacement detection device 306, the upper anti-drop device 305 comprises an upper stop cylinder 307, the upper stop cylinder 307 is fixedly installed on the upper frame body 301 between the second frame body 102 and the upper mounting plate 302, an upper stop clamping plate 308 is fixedly installed at the telescopic end of the upper stop cylinder 307, the upper stop clamping plate 308 is slidably installed on an upper stop sliding rail 309 through a sliding block, the upper stop sliding rail 309 is fixedly installed on the upper frame body 301, and when the telescopic end of the upper stop cylinder 307 extends out, the upper stop clamping plate 308 is driven to move from the upper frame body 301 to the second frame body 102 until the upper stop clamping plate 308 is clamped on the stop shaft 211; go up displacement detection device 306 and include displacement sensor 310, go up displacement sensor 310 fixed mounting perpendicular to base 1 setting on first support body 101, slidable mounting has last displacement sensor slider 311 on going up displacement sensor 310, goes up displacement sensor slider 311 through last sensor connecting plate 312 fixed connection on last support body 301.
Referring to fig. 11 and 12: the middle sliding table comprises a left mounting plate 601 and a right mounting plate 602, the bottom end of the left mounting plate 601 is slidably mounted on a left sliding rail 603 through a sliding block, the left sliding rail 603 is fixedly mounted on a cross beam at the upper end of the third frame body 103, and the left mounting plate 601 is driven to slide through a left driving device; the bottom end of the right mounting plate 602 is slidably mounted on a right slide rail 604 through a slide block, the right slide rail 604 is fixedly mounted on the upper end beam of the fourth frame body 104, and the right mounting plate 602 is driven to slide through a right driving device;
the left driving device comprises a left ball screw 605, one end of the left ball screw 605 is provided with a synchronous pulley, one end of the left ball screw 605 provided with the synchronous pulley is rotatably arranged in a mounting seat of the left ball screw 605, the mounting seat of the left ball screw 605 is fixedly arranged on a cross beam at the upper end of the third frame body 103 and is arranged at the rear end of the third frame body 103, and a nut of the left ball screw 605 is fixedly connected on the left mounting plate 601 through a left connecting strip 606; the right driving device comprises a right ball screw 607, one end of the right ball screw 607 is provided with a synchronous pulley, one end of the right ball screw 607 provided with the synchronous pulley is rotatably arranged in a mounting seat of the right ball screw 607, the mounting seat of the right ball screw 607 is fixedly arranged on an upper end beam of the fourth frame body 104 and is arranged at the rear end of the fourth frame body 104, and a nut of the right ball screw 607 is fixedly connected on the right mounting plate 602 through a right connecting bar 608;
a synchronous pulley at one end of the left ball screw 605 and a synchronous pulley at one end of the right ball screw 607 are engaged with a synchronous belt 609, the synchronous belt 609 is further engaged with a servo motor 610 provided with the synchronous pulley, the servo motor 610 is fixedly mounted on the third frame body 103, and a shield 611 covering the synchronous belt 609 is further mounted at the positions of the synchronous belt 609 at the rear ends of the third frame body 103 and the fourth frame body 104 (see fig. 4).
Referring to fig. 14, 15 and 21: the lower die clamp 4 comprises a lower die base plate 401, a positioning pin 403 matched with a positioning hole in the lower mounting plate 203 is mounted on the lower die base plate 401, the positioning pin 403 is arranged at the front end of the lower die base plate 401, a locking knob 404 matched with a bolt hole in the lower mounting plate 203 is mounted at the corner of the lower die base plate 401, a fixing column 405 is fixedly mounted on the lower die base plate 401, a lower die plate 406 is fixedly mounted on the fixing column 405, and three conical guide sleeves 402 are fixedly mounted on the lower die plate 406; the conical guide sleeve 402 comprises a guide sleeve positioning seat 402-1 fixedly arranged on the lower template 406, the bottom end inside the guide sleeve positioning seat 402-1 is fixedly provided with a cushion block 402-2 with a screw hole, the conical guide sleeve 402 is internally matched with a sliding guide sleeve 402-3, the upper end of the sliding guide sleeve 402-3 is provided with a conical mounting hole 402-4 matched with the conical head 502-1 of the conical guide column 502, the sliding guide sleeve 402-3 below the conical mounting hole 402-4 is internally provided with a screw mounting hole, a screw 402-5 is arranged in the screw mounting hole, the screw is sleeved with a spring 402-6, the spring 402-6 is arranged in the sliding guide sleeve 402-3, and when the spring 402-6 is in a relaxation state, the lower end of the sliding guide sleeve 402-3 is in a;
a lower die positioning piece 407 is fixedly mounted on the lower die plate 406, an arc-shaped positioning groove is formed in one side of the lower die positioning piece 407, two lower die clamping cylinders 408 are fixedly mounted at the bottom end of the lower die plate 406, the telescopic ends of the two lower die clamping cylinders 408 are respectively and fixedly connected with two lower die clamping blocks 409, the two lower die clamping blocks 409 are symmetrically arranged, the arc-shaped positioning grooves are formed in the front ends of the two lower die clamping blocks 409, and a lower plastic piece is clamped and fixed in the arc-shaped positioning groove under the combined action of the relative movement of the two lower die clamping blocks 409 and the;
the left end and the right end of the lower die bottom plate 401 are both provided with a lower die moving device, the lower die moving device comprises two fixed seats 410 fixedly arranged on the lower die bottom plate 401, the mounting holes of the two fixed seats 410 are both provided with a cam 411, the two fixed seats 410 and the two cams 411 are both fixedly arranged on a rotating shaft, one end of the rotating shaft is fixedly provided with a rotating shaft handle 412, the rotating shaft handle 412 is adjacent to the front end of the lower die bottom plate 401, a rotating shaft sliding block 413 is arranged in the fixed seats 410 below the cam 411 in a sliding manner, and a roller 414 is arranged below the;
two handles 415 are fixedly mounted on the lower die base plate 401, and the two handles 415 are arranged at the front end of the lower die base plate 401.
Referring to FIG. 13: the upper die clamp 5 comprises an upper die plate 501, three conical guide posts 502 are fixedly arranged at the lower end of the upper die plate 501, the conical guide pillar 502 is fixedly installed at the lower end of the upper die plate 501 through a guide pillar support 502-2, the free end of the conical guide post 502 is provided with a conical head 502-1 which is contacted with the lower die clamp 4 during die assembly, the upper die plate 501 is fixedly arranged at the bottom end of the upper mounting plate 302 through six upper die fixing parts 503 (refer to figure 6) which are symmetrical left and right, the upper die plate 501 is fixedly arranged on the upper mounting plate 302 by rotating a locking handle in the upper die fixing part 503 to drive a locking press block in the upper die fixing part 503, an upper die positioning part 504 is fixedly arranged at the lower end of the upper die plate 501, two upper die clamping cylinders 505 are arranged at two sides of the upper die positioning part 504, the two upper die clamping cylinders 505 are fixedly arranged on the upper die plate 501, the upper plastic part is clamped and fixed by the movement of the two upper mold clamping cylinders 505 and the cooperation of the upper mold positioning piece 504.
Referring to fig. 3, 12, and 16 to 19: the nitrogen heating middle die 7 comprises a sealing box 701, a heating pipe 702 is arranged in the sealing box 701, a gas needle 703 is arranged on the sealing box 701, the gas needle 703 penetrates through the sealing box 701, middle die mounting plates 704 are fixedly mounted on two sides of the sealing box 701, the middle die mounting plates 704 on the two sides are respectively fixedly mounted on a left side mounting plate 601 and a right side mounting plate 602 through middle die fixing pieces 705, two middle die mounting posts 707 are respectively mounted on the middle die mounting plates 704, the two middle die mounting posts 707 on the left side mounting plate 601 and the right side mounting plate 602 are mounted in the middle die fixing pieces 705, each middle die fixing piece 705 comprises a fixing block with a through hole and a screwing handle fixedly mounted on the fixing block, the middle die mounting posts 707 mounted in the fixing blocks are locked and fixed through rotating the screwing handle, eight nitrogen delivery pipes 706 are mounted on the middle die mounting plate 704 on one side, the four nitrogen conveying pipes 706 are arranged above the heating pipe 702, the other four nitrogen conveying pipes 706 are arranged below the heating pipe 702, the input end of each nitrogen conveying pipe 706 is connected with the nitrogen control device 8, the nitrogen control device 8 comprises a pressure reducing valve 802 connected with the output end of the nitrogen making machine 801, the output end of the pressure reducing valve 802 is connected with a gas distributing block 803, the gas distributing block 803 is provided with eight output pipelines, the output pipelines flow into a flow meter 805 after passing through a throttle valve 804, and nitrogen after passing through the flow meter 805 flows into the nitrogen conveying pipes 706.
Referring to fig. 4, 5 and 20: base 1 rear end intermediate position has been seted up and has been dodged district 105, dodge district 105 and set up between third support body 103 and fourth support body 104, be used for depositing hydraulic lift truck 106 in dodging the district 105, be provided with the retooling frock 107 that is arranged in changing nitrogen gas heating well mould 7 on the hydraulic lift truck 106, retooling frock 107 includes the frock bottom plate 108 with hydraulic lift truck 106 contact, frock stand 109 is installed perpendicularly to the corner of frock bottom plate 108, frock stand 109 upper end fixed mounting has frock roof 110, the intermediate position of frock roof 110 has been seted up and has been dodged through-hole 111 in order to dodge the structure of intermediate position on the nitrogen gas heating well mould 7, be provided with a plurality of spacing archs 112 on the frock roof 110.
Referring to fig. 1 and 3: the base 1 is provided with an outer frame body 9, the outer frame body 9 covers the first frame body 101, the second frame body 102, the third frame body 103 and the fourth frame body 104, an electric rolling door 901 convenient for pushing the hydraulic lifting vehicle 106 is installed at the rear of the outer frame body 9, an electric cabinet 902 is installed on the side face of the outer frame body 9, a tower lamp 904 used for an exhaust fan 903 and displaying the running state of equipment is installed at the upper end of the outer frame body 9, the exhaust fan 903 is connected with a ventilation pipeline at the factory, a pneumatic safety door 905 is installed at the front end of the outer frame body 9, a safety correlation grating 906 is installed on the outer frame body 9 around the safety door 905, an operation touch screen is further installed at the front end of the outer frame body 9, wherein the electric rolling door 901, the exhaust fan 903, the tower lamp, the safety door 905 and the safety correlation grating 906 are.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a hot gas welding plastics welding equipment which characterized in that: the plastic part fixing device comprises a base, wherein a first frame body and a second frame body which are identical in structure and symmetrically arranged are fixedly installed on two sides of the front end of the base, a lower sliding table and an upper sliding table which can move up and down are sequentially arranged between the first frame body and the second frame body from bottom to top, a lower die clamp for fixing a lower plastic part is installed at the upper end of the lower sliding table, and an upper die clamp for fixing an upper plastic part is installed at the lower end of the upper sliding table; the nitrogen heating middle die is characterized in that a third frame body and a fourth frame body which have the same structure and are symmetrically arranged are fixedly arranged on two sides of the rear end of the base, middle sliding tables used for occupying or avoiding space positions between the lower sliding table and the upper sliding table are arranged on the third frame body and the fourth frame body, the middle sliding tables can move back and forth along the base, a nitrogen heating middle die used for heating the welding surface of the upper plastic piece and the welding surface of the lower plastic piece is arranged on the middle sliding tables, and the nitrogen heating middle die is used for conveying nitrogen through a nitrogen control device;
the lower sliding table comprises a lower frame body, two ends of the lower frame body are slidably mounted on sliding rails through sliding blocks, the sliding rails are fixedly mounted on a first frame body and a second frame body respectively, the sliding rails are perpendicular to the base, a lower mounting plate is fixedly mounted at the upper end of the lower frame body, a positioning hole and a bolt hole are formed in the lower mounting plate, and the lower frame body is driven to slide through a lower driving device; the upper sliding table comprises an upper frame body, two ends of the upper frame body are slidably mounted on the sliding rails through sliding blocks, an upper mounting plate is fixedly mounted at the lower end of the upper frame body, and the upper sliding table is driven to slide through an upper driving device;
the middle sliding table comprises a left mounting plate and a right mounting plate, the bottom end of the left mounting plate is slidably mounted on a left sliding rail through a sliding block, the left sliding rail is fixedly mounted on an upper end beam of the third frame body, and the left mounting plate is driven to slide through a left driving device; the bottom of right side mounting panel passes through slider slidable mounting on right slide rail, right slide rail fixed mounting is on the upper end crossbeam of fourth support body, the right side mounting panel slides through the drive of right drive arrangement.
2. The hot gas welding plastic welding apparatus of claim 1, wherein: the lower die clamp comprises a lower die base plate, a positioning pin matched with a positioning hole in the lower mounting plate is installed at the front end of the lower die base plate, a locking hand button matched with a bolt hole in the lower mounting plate is installed at the corner of the lower die base plate, a fixing column is fixedly installed on the lower die base plate, a lower die plate is fixedly installed on the fixing column, at least three guide sleeves are fixedly installed on the lower die plate, a lower die positioning piece is fixedly installed on the lower die plate, two lower die clamping cylinders are fixedly installed on two sides of the bottom end of the lower die plate, the telescopic ends of the two lower die clamping cylinders are fixedly connected with the two lower die clamping blocks through connecting pieces respectively, and a lower plastic piece is clamped and fixed through the combined action of the;
the upper die clamp comprises an upper die plate, guide pillars with the same number and positions as those of the guide sleeves are fixedly mounted at the lower end of the upper die plate, the upper die plate is fixedly mounted on an upper mounting plate through at least four upper die fixing pieces which are bilaterally symmetrical, an upper die positioning piece is fixedly mounted at the lower end of the upper die plate, two upper die clamping cylinders are arranged on two sides of the upper die positioning piece, the two upper die clamping cylinders are arranged on the upper die plate, and an upper plastic piece is clamped and fixed through the combined action of the movement of the two upper die clamping cylinders and the upper die;
the middle mould heating device comprises a sealing box, a heating pipe is arranged in the sealing box, a gas needle is arranged on the sealing box, the gas needle penetrates through the sealing box, middle mould mounting plates are fixedly mounted on two sides of the sealing box, two sides of the middle mould mounting plates are respectively fixedly mounted on a left side mounting plate and a right side mounting plate through middle mould fixing parts, at least two nitrogen conveying pipes are mounted on the middle mould mounting plate on one side, the output end of each nitrogen conveying pipe is connected with the gas needle after passing through the sealing box, the input end of each nitrogen conveying pipe is connected with a nitrogen control device, the nitrogen control device comprises a pressure reducing valve connected with the output end of a nitrogen making machine, the output end of each pressure reducing valve is connected with a gas distributing block, the gas distributing block is provided with output pipelines with the same number as the nitrogen conveying pipes, the nitrogen after passing through the flowmeter flows into a nitrogen conveying pipe.
3. The hot gas welding plastic welding apparatus of claim 1, wherein: the upper driving device comprises an upper servo motor fixedly mounted on a servo motor mounting plate, the servo motor mounting plate is arranged above the upper sliding table, and two ends of the servo motor mounting plate are fixedly mounted on the first frame body and the second frame body;
the lower driving device comprises a lower servo motor fixedly arranged on the base, an output shaft of the lower servo motor is connected with an input shaft of a lower T-shaped speed reducing motor, output shafts at two ends of the lower T-shaped speed reducing motor are respectively connected with input shafts of two lower right-angle speed reducing motors through a coupler and a connecting shaft, the two lower right-angle speed reducing motors are fixedly arranged on the base, output shafts of the two lower right-angle speed reducing motors are respectively and fixedly connected with two lower ball screws, nuts of the two lower ball screws are fixedly arranged on the lower frame body, the other ends of the two lower ball screws are rotatably arranged in lower screw mounting seats, and the lower screw mounting seats are fixedly arranged on the first frame body and the second frame body;
the left driving device comprises a left ball screw, one end of the left ball screw is fixedly provided with a synchronous belt pulley, one end of the left ball screw with the synchronous belt pulley is rotatably arranged in the mounting seat, the mounting seat of the left ball screw is fixedly arranged on an upper end beam of the third frame body and is arranged at the rear end of the third frame body, and a nut of the left ball screw is fixedly connected onto the left mounting plate through a left connecting strip;
the right driving device comprises a right ball screw, one end of the right ball screw is fixedly provided with a synchronous pulley, one end of the right ball screw with the synchronous pulley is rotatably arranged in the mounting seat, the mounting seat of the right ball screw is fixedly arranged on the upper end beam of the fourth frame body and is arranged at the rear end of the fourth frame body, and the nut of the right ball screw is fixedly connected to the right mounting plate through a right connecting strip;
the synchronous belt pulley of left side ball one end meshes on a synchronous belt with the synchronous belt pulley of right ball one end jointly, still mesh on the synchronous belt and install synchronous belt's servo motor, servo motor fixed mounting is on the third support body.
4. The hot gas welding plastic welding apparatus of claim 1, wherein: the lower sliding table further comprises a lower anti-falling device and a lower displacement detection device, the lower anti-falling device comprises a lower stop air cylinder, the lower stop air cylinder is fixedly mounted on a lower frame body between the second frame body and the lower mounting plate, a telescopic end of the lower stop air cylinder is fixedly provided with a lower stop clamping plate, the lower stop clamping plate is slidably mounted on a lower stop sliding rail through a sliding block, the lower stop sliding rail is fixedly mounted on the lower frame body, when the telescopic end of the lower stop air cylinder extends out, the lower stop clamping plate is driven to move from the lower frame body to the second frame body until the lower stop clamping plate is clamped on a stop shaft with a plurality of clamping steps, and the stop shaft is fixedly mounted on the second frame body and perpendicular to the base; the lower displacement detection device comprises a lower displacement sensor, the lower displacement sensor is fixedly arranged on the first frame body and is perpendicular to the base, a lower displacement sensor sliding block is slidably arranged on the lower displacement sensor, and the lower displacement sensor sliding block is fixedly connected to the lower frame body through a lower sensor connecting plate;
the upper sliding table further comprises an upper anti-falling device and an upper displacement detection device, the upper anti-falling device comprises an upper stop cylinder, the upper stop cylinder is fixedly mounted on the upper frame body between the second frame body and the upper mounting plate, an upper stop clamping plate is fixedly mounted on the telescopic end of the upper stop cylinder, the upper stop clamping plate is slidably mounted on an upper stop sliding rail through a sliding block, the upper stop sliding rail is fixedly mounted on the upper frame body, and when the telescopic end of the upper stop cylinder extends out, the upper stop clamping plate is driven to move from the upper frame body to the second frame body until the upper stop clamping plate is clamped on the stop shaft; the upper displacement detection device comprises an upper displacement sensor, the upper displacement sensor is fixedly installed on the first frame body and perpendicular to the base, an upper displacement sensor sliding block is installed on the upper displacement sensor in a sliding mode, and the upper displacement sensor sliding block is fixedly connected to the upper frame body through an upper sensor connecting plate.
5. The hot gas welding plastic welding apparatus of claim 2, wherein: lower mould mobile device is all installed at both ends about the lower mould bottom plate, lower mould mobile device includes two fixing bases of fixed mounting on the lower mould bottom plate, two all be provided with the cam in the mounting hole of fixing base, two fixing base and two the equal fixed mounting of cam is in a pivot, the one end fixed mounting of pivot has the pivot handle, slidable mounting has the pivot slider in the fixing base of cam below, the gyro wheel is installed to the below of pivot slider.
6. The hot gas welding plastic welding apparatus of claim 1, wherein: the base rear end intermediate position has been seted up and has been dodged the district, dodge the district setting between third support body and fourth support body, dodge and be used for depositing hydraulic lift truck in the district, be provided with the retooling frock that is used for changing mould in the nitrogen gas heating on the hydraulic lift truck, the retooling frock includes the frock bottom plate with the contact of hydraulic lift truck, the frock stand is installed perpendicularly to the corner of frock bottom plate, frock stand upper end fixed mounting has the frock roof, the intermediate position of frock roof has been seted up and has been dodged the through-hole, be provided with a plurality of spacing archs on the frock roof.
7. The hot gas welding plastic welding apparatus of claim 1, wherein: the hydraulic lifting trolley is characterized in that an outer frame body is arranged on the base, the outer frame body covers the first frame body, the second frame body, the third frame body and the fourth frame body, an electric rolling door convenient for pushing a hydraulic lifting trolley is installed at the rear of the outer frame body, an electric cabinet is installed on the side face of the outer frame body, a tower lamp used for an exhaust fan and a display device running state is installed at the upper end of the outer frame body, the exhaust fan is connected with a ventilation pipeline of a factory, a pneumatic safety door is installed at the front end of the outer frame body, safety correlation gratings are installed on the outer frame body around the safety door, and an operation touch screen is further installed at the front end of the outer frame body.
8. The hot gas welding plastic welding apparatus of claim 1, wherein: the guide pillar of the upper die clamp is a conical guide pillar, the guide sleeve of the lower die clamp is a conical guide sleeve, the conical guide pillar is fixedly arranged at the lower end of the upper die plate through a guide pillar support, and the free end of the conical guide pillar is provided with a conical head which is in contact with the lower die clamp when the die is closed; the taper guide sleeve comprises a guide sleeve positioning seat fixedly mounted on the lower die plate, a cushion block with a screw hole is fixedly mounted at the bottom end inside the guide sleeve positioning seat, a sliding guide sleeve is matched in the taper guide sleeve, a taper mounting hole matched with a taper head of the taper guide pillar is formed in the upper end of the sliding guide sleeve, a screw mounting hole is formed in the sliding guide sleeve below the taper mounting hole, a screw is mounted in the screw mounting hole, a spring is sleeved on the screw and is arranged in the sliding guide sleeve, and when the spring is in a relaxation state, the lower end of the sliding guide sleeve is in a suspension state.
9. The hot gas welding plastic welding apparatus of claim 2, wherein: the lower die bottom plate is also fixedly provided with two handles, and the two handles are arranged at the front end of the lower die bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021555926.4U CN212499011U (en) | 2020-07-31 | 2020-07-31 | Hot gas welding plastic welding equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021555926.4U CN212499011U (en) | 2020-07-31 | 2020-07-31 | Hot gas welding plastic welding equipment |
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| Publication Number | Publication Date |
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| CN212499011U true CN212499011U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021555926.4U Active CN212499011U (en) | 2020-07-31 | 2020-07-31 | Hot gas welding plastic welding equipment |
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| CN (1) | CN212499011U (en) |
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2020
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