CN108582745B

CN108582745B - Turntable EVA (ethylene-vinyl acetate copolymer) stamping forming machine and forming method thereof

Info

Publication number: CN108582745B
Application number: CN201810355995.1A
Authority: CN
Inventors: 吴鸿礼
Original assignee: Fujian Honglong Machinery Co ltd
Current assignee: Fujian Honglong Machinery Co ltd
Priority date: 2018-04-19
Filing date: 2018-04-19
Publication date: 2023-09-29
Anticipated expiration: 2038-04-19
Also published as: CN108582745A

Abstract

The invention discloses a rotary table EVA (ethylene-vinyl acetate copolymer) stamping forming machine and a forming method thereof, comprising the following steps: (1) Placing the EVA sheet on a sliding plate, placing a die on the EVA sheet, moving the sliding plate backwards, descending a lifting pressing frame, and ascending the lifting pressing plate; (2) Rotating the turntable for 90 degrees after ascending, then descending and clamping, descending the lifting pressing plate, and heating and pressing; (3) The lifting pressing plate ascends, then the turntable ascends firstly and then rotates for 90 degrees, descends and is clamped, and the lifting pressing plate descends to perform primary cooling shaping; (4) Lifting pressing plates rise, then the turntable rises firstly and then rotates for 90 degrees, then descends and is clamped, the lifting pressing plates descend, and secondary cooling shaping is carried out; (5) The lifting pressing plate ascends, then the turntable ascends firstly and then rotates for 90 degrees, descends and is clamped, the lifting pressing frame ascends, the sliding plate moves forwards, and the EVA plate is taken away; (6) repeating the above steps (1) to (5). The turning slide plate is accurate in positioning, high in machining efficiency and long in service life.

Description

Turntable EVA (ethylene-vinyl acetate copolymer) stamping forming machine and forming method thereof

Technical Field

The invention belongs to the technical field of EVA (ethylene-vinyl acetate) stamping forming, and particularly relates to a rotary table type EVA stamping forming machine and a forming method thereof.

Background

The existing EVA sole stamping forming equipment is only provided with one station, when an EVA sheet is stamped, a heating process is performed first, a cooling process is performed later, the structure is complex, the maintenance is troublesome, and the production efficiency is lower. At present, a turntable type rubber sole stamping forming machine can be used for stamping EVA soles, but a turntable can only rotate, and because of larger errors of the rotation angle of the turntable, a mold cannot be accurately positioned on a corresponding processing station during rotation, and the mold easily deflects the turntable in the hot pressing and cold pressing processes, so that the processing efficiency is low, the foaming effect is poor, parts of equipment are worn, and the service life of the equipment is reduced.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide the turntable EVA stamping forming machine with good working effect, high production efficiency and long service life and the forming method thereof.

In order to solve the technical problems, the invention adopts a technical scheme that: the rotary table type EVA stamping forming machine comprises a frame, wherein a lifting table which is driven by a first lifting driving mechanism to reciprocate up and down is arranged at the lower part of the frame, a rotary table which is driven by a rotary driving mechanism to horizontally rotate 90 degrees each time is arranged on the lifting table, four chute frames which are symmetrically distributed relative to the center of the rotary table are uniformly arranged on the rotary table, sliding plates capable of sliding back and forth along the chute frames are arranged in the chute frames, lifting pressing frames positioned above the sliding plates are arranged on the chute frames in a crossing manner, fifth lifting driving mechanisms which are respectively used for driving the lifting pressing frames to reciprocate up and down are arranged on the rotary table, four supporting tables which are respectively used for supporting corresponding sliding plates are sequentially arranged on the lifting table along the rotary direction of the rotary table, a taking and placing sliding supporting table, a heating fixed supporting table, a primary cooling fixed supporting table and a secondary cooling fixed supporting table are arranged between the frame and the taking and placing sliding supporting table, a heating lower plate is arranged above the heating fixed supporting table, a secondary cooling table is arranged below the corresponding sliding plate, and the primary cooling fixed table is arranged below the rotary table, and the secondary cooling fixed table is arranged above the rotary table and is cooled down to the corresponding sliding table; the upper part of the rack is provided with three lifting pressing plates which are driven by a second lifting driving mechanism, a third lifting driving mechanism and a fourth lifting driving mechanism to reciprocate up and down respectively, the lifting pressing plates are a heating lifting pressing plate, a primary cooling lifting pressing plate and a secondary cooling lifting pressing plate in sequence along the rotating direction of the turntable, the heating lifting pressing plate, the primary cooling lifting pressing plate and the secondary cooling lifting pressing plate are respectively in one-to-one correspondence with the heating fixed supporting table, the primary cooling fixed supporting table and the secondary cooling fixed supporting table, a heating upper plate which is matched with the heating lower plate is arranged below the heating lifting pressing plate, a primary cooling upper plate which is matched with the primary cooling lower plate is arranged below the primary cooling lifting pressing plate, and a secondary cooling upper plate which is matched with the secondary cooling lower plate is arranged below the secondary cooling lifting pressing plate; the first lifting driving mechanism, the second lifting driving mechanism, the third lifting driving mechanism, the fourth lifting driving mechanism, the fifth lifting driving mechanism, the rotary driving mechanism and the front-back translation driving mechanism are all electrically connected to the control device.

Preferably, electric heaters are arranged in the heating upper plate and the heating lower plate, cooling cavities are arranged in the primary cooling upper plate, the primary cooling lower plate, the secondary cooling upper plate and the secondary cooling lower plate, a cooling medium inlet and a cooling medium outlet of the cooling cavities are respectively connected to corresponding interfaces of the refrigerating device, and the electric heaters and the refrigerating device are electrically connected to the control device.

Preferably, the first lifting driving mechanism, the second lifting driving mechanism, the third lifting driving mechanism and the fourth lifting driving mechanism are all oil cylinders or air cylinders.

Preferably, the rotary driving mechanism comprises a first motor and a speed reducer, the speed reducer is fixedly arranged on the lifting table, the first motor is arranged on the lifting table or the speed reducer, the output end of the first motor is connected with the input end of the speed reducer, and the rotary table is fixedly arranged at the output end of the speed reducer.

Preferably, the lower part of the stand is provided with a first travel switch for the induction lifting platform to descend to the position, the upper part of the stand is provided with a second travel switch for the induction heating lifting pressing plate to ascend to the position, the upper part of the stand is also provided with a third travel switch for the induction primary cooling lifting pressing plate to ascend to the position, the upper part of the stand is also provided with a fourth travel switch for the induction secondary cooling lifting pressing plate to ascend to the position, and the first travel switch, the second travel switch, the third travel switch and the fourth travel switch are all electrically connected to the control device.

Preferably, the front-back translation driving mechanism comprises a rack fixed on the frame, a gear meshed with the rack and a second motor for driving the gear to rotate, the second motor is fixedly arranged at the bottom side of the taking and placing sliding support table, two horizontal guide rails for guiding the taking and placing sliding support table to reciprocate back and forth are arranged on the frame, the rack is arranged between the two horizontal guide rails in parallel, a front limit switch and a rear limit switch for respectively limiting the front-back travel position of the taking and placing sliding support table are arranged on the frame, and the front limit switch and the rear limit switch are electrically connected to the control device.

Preferably, the fifth lifting driving mechanism comprises a pair of cylinders, and the left end and the right end of the lifting pressing frame are respectively driven by the left cylinder and the right cylinder; the lifting pressing frame comprises a left-falling L-shaped plate, a right-falling L-shaped plate and a horizontal pressing strip, wherein the horizontal pressing strip is connected between the bottoms of the left-falling L-shaped plate and the right-falling L-shaped plate to form a U-shaped frame body, the width of the U-shaped frame body is smaller than the width of a chute of the chute frame, the width of the U-shaped frame body is larger than the width of each lifting pressing plate and the corresponding upper plate, the left-falling L-shaped plate is driven by a left cylinder, and the right-falling L-shaped plate is driven by a right cylinder.

Preferably, grooves for accommodating the lifting and lowering frames are formed in bottoms of the heating upper plate, the primary cooling upper plate and the secondary cooling upper plate.

Preferably, a plurality of stand columns are arranged in the stand frame, a beam plate is arranged at the upper part of each stand column, the second lifting driving mechanism, the third lifting driving mechanism and the fourth lifting driving mechanism are arranged on the beam plate, and the lifting pressing plate is positioned below the beam plate; the outside of frame is provided with the casing, the casing contains polylith heat dissipation bounding wall, a plurality of ventilation holes have been seted up on the heat dissipation bounding wall.

In order to solve the technical problems, the invention adopts another technical scheme that: the turntable EVA stamping forming machine is adopted, the turntable is positioned at the lowest position in the initial stage, the heating fixed supporting table, the primary cooling fixed supporting table and the secondary cooling fixed supporting table are respectively embedded with chute frames above the turntable, the lifting frames above the heating fixed supporting table, the primary cooling fixed supporting table and the secondary cooling fixed supporting table are positioned at the lowest positions, the heating lifting pressing plate, the primary cooling lifting pressing plate and the secondary cooling lifting pressing plate are positioned at the lowest positions, the lifting pressing plates press the corresponding lifting frames, the lifting frames above the sliding supporting tables are positioned at the highest positions, the sliding tables are propped against the corresponding sliding plates above the sliding supporting tables, and the sliding plates above the sliding supporting tables are positioned at the front end positions; the method comprises the following steps:

(1) Firstly, placing the EVA sheet after primary foaming on a sliding plate above a taking and placing sliding support table, and then placing a stamping die on the EVA sheet; then the front-back translation driving mechanism drives the taking and placing sliding support table to move backwards, so that the sliding plate completely slides into the sliding chute frame; then a fifth lifting driving mechanism positioned above the taking and placing sliding supporting table drives the lifting frame to descend so as to press the stamping die; finally, the second lifting driving mechanism, the third lifting driving mechanism and the fourth lifting driving mechanism respectively drive the lifting pressing plates to ascend so that the upper plates are separated from the corresponding lifting pressing frames;

(2) The first lifting driving mechanism drives the turntable to ascend firstly, so that each chute frame of the turntable leaves a corresponding supporting table, then the rotary driving mechanism drives the turntable to rotate for 90 degrees, then the first lifting driving mechanism drives the turntable to descend, so that each chute frame of the turntable clamps the corresponding supporting table, finally the second lifting driving mechanism drives the heating lifting pressing plate to descend, so that the heating upper plate presses the corresponding lifting pressing frame and the corresponding stamping die, and at the moment, the EVA sheet on the sliding plate performs secondary heating foaming between the heating upper plate and the heating lower plate;

(3) After heating is finished, the second lifting driving mechanism drives the heating lifting pressing plate to ascend, then the first lifting driving mechanism drives the turntable to ascend, so that each chute frame leaves a corresponding supporting table, then the rotary driving mechanism drives the turntable to continuously rotate for 90 degrees, then the first lifting driving mechanism drives the turntable to descend, so that each chute frame of the turntable clamps the corresponding supporting table, finally the third lifting driving mechanism drives the primary cooling lifting pressing plate to descend, so that the primary cooling upper plate presses the corresponding lifting pressing frame and the stamping die, and at the moment, the EVA board on the slide plate is subjected to primary cooling shaping between the primary cooling upper plate and the primary cooling lower plate;

(4) After the primary cooling is finished, the third lifting driving mechanism drives the primary cooling lifting pressing plate to ascend, then the first lifting driving mechanism drives the turntable to ascend so that each chute frame leaves the corresponding supporting table, then the rotary driving mechanism drives the turntable to continuously rotate by 90 degrees, then the first lifting driving mechanism drives the turntable to descend so that each chute frame of the turntable clamps the corresponding supporting table, finally the fourth lifting driving mechanism drives the secondary cooling lifting pressing plate to descend so that the secondary cooling upper plate presses the corresponding lifting pressing frame and the stamping die, and at the moment, the EVA board on the sliding plate performs secondary cooling shaping between the secondary cooling upper plate and the secondary cooling lower plate;

(5) After secondary cooling is finished, the fourth lifting driving mechanism drives the secondary cooling lifting pressing plate to ascend, then the first lifting driving mechanism drives the turntable to ascend, so that each chute frame leaves the corresponding supporting table, then the rotary driving mechanism drives the turntable to continuously rotate by 90 degrees, then the first lifting driving mechanism drives the turntable to descend, so that each chute frame of the turntable clamps the corresponding supporting table, then the fifth lifting driving mechanism above the taking and placing sliding supporting table drives the lifting pressing frame to ascend, leaves the stamping die, then the front-back translation driving mechanism drives the taking and placing sliding supporting table to move forwards, so that the sliding plate part slides out of the chute frame, and finally the stamping die on the sliding plate and the EVA sheet subjected to secondary foaming are sequentially taken away;

(6) Repeating the steps (1) to (5).

Compared with the prior art, the invention has the following beneficial effects: the rotary table is adopted to carry out four-station continuous circulation work, automatic EVA sole stamping forming integrating material taking and placing, heating stamping, primary cooling forming and secondary cooling forming is realized, the number of production personnel is reduced, only one production personnel is needed to take and place EVA boards and stamping dies in the forming process of the whole sole, the labor intensity is low, manual material transferring is not needed in middle heating and cooling, multi-station simultaneous working and non-stop operation are realized, the safety coefficient is higher, the working environment is good, the degree of automation is high, the maintenance is convenient, the production efficiency is greatly improved, the yield of 50 percent is improved, the power consumption of 30 percent is reduced, and the quality of products is improved.

The clamping of the sliding chute frame and the two sides of the supporting table presses the die by adopting the lifting and lowering frame, so that the sliding plate is accurately positioned on a corresponding processing station after rotating along with the rotary table, the rotary table can not rotate randomly in the working process of the die, the rotary table is prevented from deflecting, the die is ensured to be accurately positioned on the corresponding supporting table all the time, the processing efficiency of the sole is improved, the heating speed is high, the secondary foaming effect is good, the cooling speed is high, the shaping effect is good, the abrasion of parts of equipment is reduced, and the service life of the equipment is prolonged.

Drawings

Fig. 1 is a schematic structural view of a rotary table EVA stamping forming machine.

Fig. 2 is an enlarged view of the upper structure of the molding machine of fig. 1.

Fig. 3 is an enlarged view of the lower structure of the molding machine of fig. 1.

Fig. 4 is a top view of a support table layout structure.

Fig. 5 is a rear view of the support table and lower plate layout structure.

Fig. 6 is a top view of the support table and lower plate layout structure.

Fig. 7 is a front view of the front-rear translation driving mechanism.

Fig. 8 is a top view of the turntable.

Fig. 9 is a front view of the turntable.

Fig. 10 is a schematic diagram showing the engagement of the turntable and the support table.

FIG. 11 is a schematic view showing the slide plate moving forward by the slide support.

FIG. 12 is a schematic view of the slide plate moving backward by the pick-and-place slide support.

Fig. 13 is a front view of the first elevating drive mechanism when the turntable is driven to ascend.

Fig. 14 is a rear view of the first elevating drive mechanism when the turntable is driven to ascend.

Fig. 15 is a schematic diagram of the embossing process of EVA sheet.

Fig. 16 is a schematic illustration of placement of the stamping die.

FIG. 17 is a schematic view of the processing of EVA soles.

The marks in the figure: 100. a frame; 101. a column; 102. a cross beam plate; 103. a housing; 104. a heat dissipation coaming; 105. a vent hole; 110. a shortcut operation panel; 111. a start button; 112. a stop button; 113. an emergency stop button; 120. a touch panel; 121. a power indicator light; 122. operating an indicator light; 123. action indicator light 124, touch display; 130. a temperature control panel; 131. heating a temperature display screen; 132. a heating temperature control knob is arranged on the upper part; 133. a lower heating temperature display screen; 134. a lower heating temperature control knob; 140. a pressure gauge; 150. a fault indicator light; 160. automatically switching the control panel; 161. a power supply start button; 162. a power stop button; 163. manual/automatic switching knob; 164. a mold opening button; 165. a mold closing button; 170. a front-rear translation driving mechanism; 171. a rack; 172. a gear; 173. a second motor; 174. a horizontal guide rail; 175. a front limit switch; 176. a rear limit switch; 200. a lifting table; 210. a first lifting driving mechanism; 300. a turntable; 310. a rotary driving mechanism; 311. a first motor; 312. a speed reducer; 320. a chute frame; 322. a channel; 330. a step-up and step-down frame; 331. a left-falling L-shaped plate; 332. a right inverted L-shaped plate; 333. a horizontal layering; 334. a U-shaped frame; 340. a fifth lifting driving mechanism; 341. a left cylinder; 342. a right cylinder; 350. a barrel cover; 351. a rotary distributor; 400. a slide plate; 401. a first slide plate; 402. a second slide plate; 403. a third slide plate; 404. a fourth slide plate; 405. high temperature resistant cloth backing; 410. EVA sheet material; 411. a sole; 420. stamping a die; 500. a support table; 510. taking and placing a sliding support table; 520. heating the fixed support table; 521. heating the lower plate; 530. the support table is fixed by primary cooling; 531. primary cooling the lower plate; 540. secondary cooling the fixed support table; 541. secondary cooling of the lower plate; 600. a lifting pressing plate; 610. heating the lifting pressing plate; 611. heating the upper plate; 612. a second lifting driving mechanism; 620. cooling the lifting pressing plate once; 621. primary cooling the upper plate; 622. a third lifting driving mechanism; 630. secondary cooling of the lifting pressing plate; 631. secondary cooling of the upper plate; 632. a fourth lifting driving mechanism; 640. a groove; 710. an electric heater; 721. a cooling medium inlet; 722. a cooling medium outlet; 800. a guide mechanism; 910. a first travel switch; 920. a second travel switch; 930. a third travel switch; 940. and a fourth travel switch.

Detailed Description

In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 to 17, a rotary table EVA stamping forming machine, which comprises a frame 100, a lifting table 200 driven by a first lifting driving mechanism 210 to reciprocate up and down is installed at the lower part of the frame 100, a rotary table 300 driven by a rotary driving mechanism 310 to rotate 90 degrees every time horizontally (e.g. clockwise) is installed on the lifting table 200, four chute frames 320 distributed symmetrically about the center of the rotary table 300 are uniformly arranged on the rotary table 300, sliding plates 400 capable of sliding back and forth along the chute frames 320 are placed in the chute frames 320, lifting pressing frames 330 located above the sliding plates 400 are spanned on the chute frames 320, four fifth lifting driving mechanisms 340 respectively driving the lifting pressing frames 330 to reciprocate up and down are arranged on the rotary table 300, four supporting tables 500 respectively used for supporting the corresponding sliding plates 400 are arranged on the frame 100, the supporting table 500 sequentially comprises a taking and placing sliding supporting table 510, a heating fixed supporting table 520, a primary cooling fixed supporting table 530 and a secondary cooling fixed supporting table 540 along the rotating direction of the turntable 300, a front-back translation driving mechanism 170 for driving the taking and placing sliding supporting table 510 to reciprocate back and forth relative to the machine frame 100 is arranged between the machine frame 100 and the taking and placing sliding supporting table 510, a heating lower plate 521 is arranged above the heating fixed supporting table 520, a primary cooling lower plate 531 is arranged above the primary cooling fixed supporting table 530, a secondary cooling lower plate 541 is arranged above the secondary cooling fixed supporting table 540, the chute frames 320 are separated from the corresponding supporting tables 500 below when the turntable 300 is lifted in place, and the chute frames 320 are clamped at two sides of the corresponding supporting table 500 when the turntable 300 is lowered in place, so that the accurate positioning of the sliding plate 400 onto the supporting table 500 is realized; the upper part of the frame 100 is provided with three lifting pressing plates 600 which are driven by a second lifting driving mechanism 612, a third lifting driving mechanism 622 and a fourth lifting driving mechanism 632 to reciprocate up and down respectively, the lifting pressing plates 600 are a heating lifting pressing plate 610, a primary cooling lifting pressing plate 620 and a secondary cooling lifting pressing plate 630 in turn along the rotating direction of the turntable 300, the heating lifting pressing plate 610, the primary cooling lifting pressing plate 620 and the secondary cooling lifting pressing plate 630 are respectively in one-to-one correspondence with the heating fixed supporting table 520, the primary cooling fixed supporting table 530 and the secondary cooling fixed supporting table 540, a heating upper plate 611 which is matched with the heating lower plate 521 is arranged below the heating lifting pressing plate 610, a primary cooling upper plate 621 which is matched with the primary cooling lower plate 531 is arranged below the primary cooling lifting pressing plate 620, and a secondary cooling upper plate 631 which is matched with the secondary cooling lower plate 541 is arranged below the secondary cooling lifting pressing plate 630; the first 210, second 612, third 622, fourth 632, fifth 340, rotary 310 and fore-aft 170 translational drive mechanisms are all electrically connected to a control device.

In this embodiment, the chute frame 320 is provided with two parallel channels 322 on the left and right, two sides of the sliding plate 400 are placed on the corresponding channels 322 of the chute frame 320, the sliding plate 400 can move back and forth and up and down freely in the chute frame 320, and each supporting platform 500 is propped against the bottom of the corresponding sliding plate 400 when the turntable 300 descends in place.

In this embodiment, in order to reduce the difference between the vertical movement strokes of the sliding plates 400 in the chute frames 320, the upper surfaces of the sliding support table 510, the heating lower plate 521, the primary cooling lower plate 531 and the secondary cooling lower plate 541 are flush, so that the four sliding plates 400 can move up and down in the corresponding chute frames 320 synchronously, and the height of the lifting platen 600 can be set conveniently.

In this embodiment, the electric heaters 710 are disposed in the upper heating plate 611 and the lower heating plate 521, the electric heaters 710 are electrically connected to the control device, and the heating temperatures of the upper heating plate 611 and the lower heating plate 521 can be independently controlled by the two electric heaters 710, and the heating temperatures are preferably but not limited to 180-200 ℃. Of course, the heating upper plate 611 and the heating lower plate 521 may also be heated by steam, for example, a hot steam chamber is provided in the heating upper plate 611 and the heating lower plate 521, respectively, and a hot steam inlet and a hot steam outlet of the hot steam chamber are connected to corresponding interfaces of the steam boiler, respectively.

In this embodiment, cooling cavities are disposed in the primary cooling upper plate 621, the primary cooling lower plate 531, the secondary cooling upper plate 631 and the secondary cooling lower plate 541, and a cooling medium inlet 721 and a cooling medium outlet 722 of the cooling cavities are respectively connected to corresponding interfaces of a refrigeration device, and the refrigeration device is electrically connected to the control device; the cooling temperature for the two times is preferably not limited to the normal temperature (15 to 25 ℃ C.), for example, about 20 ℃ C. The cooling medium can be water, the refrigerating device can be an ice water machine, and other refrigerants can be adopted.

In this embodiment, the control device may be an industrial personal computer such as IPC, PLC, DCS, FCS and CNC, and the specific model is not limited, and a programmable logic controller is preferred. As shown in fig. 1, a shortcut operation panel 110 electrically connected to the control device is disposed on the rack (e.g., on the right side of the middle of the front side), and a start button 111, a stop button 112, and a scram button 113 are disposed on the shortcut operation panel 110. The stand 100 (for example, the upper part of the front side) is further provided with a touch panel 120 electrically connected with the control device, the touch panel 120 is provided with a power indicator 121, an operation indicator 122, an action indicator 123 and a touch display screen 124, the operation indicator 122 is used for indicating that the lifting pressing plate 600 is in hot pressing and cold pressing, and the action indicator 123 is used for indicating that the turntable 300 is in a change station.

In this embodiment, as shown in fig. 1, a temperature control panel 130 electrically connected to the control device is disposed on the rack 100 (e.g., on the left), and the temperature control panel 130 is provided with an upper heating temperature display screen 131, an upper heating temperature control knob 132, a lower heating temperature display screen 133, and a lower heating temperature control knob 134. The frame 100 may further be provided with a pressure gauge 140 and a fault indicator 150 electrically connected to the control device, where the pressure gauge 140 displays the pressure of the heating upper plate 611 acting on the stamping die 420, and the magnitude of the pressure is selected according to the specific thickness of the EVA sheet 410 and the required stamping depth.

In this embodiment, as shown in fig. 1, the frame 100 is further provided with a manual/automatic switching control panel 160 (e.g., on the right) electrically connected to the control device, the manual/automatic switching control panel 160 is provided with a power start button 161, a power stop button 162, a manual/automatic switching knob 163, a mold opening button 164, and a mold closing button 165, the mold opening button 164 is used for controlling the lifting platen 600 to rise in the manual mode, and the mold closing button 165 is used for controlling the lifting platen 600 to fall in the manual mode.

In this embodiment, the first lifting driving mechanism 210, the second lifting driving mechanism 612, the third lifting driving mechanism 622, and the fourth lifting driving mechanism 632 are all oil cylinders. The cylinder body of the oil cylinder is fixedly and vertically arranged on the frame 100, and the lifting table 200 and the lifting pressing plate 600 are respectively and fixedly arranged at the tail ends of piston rods of the oil cylinders. Of course, the first lifting driving mechanism 210, the second lifting driving mechanism 612, the third lifting driving mechanism 622, and the fourth lifting driving mechanism 632 may also be a cylinder, an electric telescopic rod, or the like.

In this embodiment, as shown in fig. 2, 4 and 14, for smooth ascending and descending, the first lifting driving mechanism 210, the second lifting driving mechanism 612, the third lifting driving mechanism 622 and the fourth lifting driving mechanism 632 are all provided with a guiding mechanism 800, the guiding mechanism 800 includes two guide posts symmetrically distributed on two sides of the piston rod and two guide holes respectively in sliding fit with the corresponding guide posts, the guide posts are fixed on the piston rod end, and the guide holes are provided on the cylinder end.

In this embodiment, as shown in fig. 4, 6 and 14, the rotation driving mechanism 310 includes a first motor 311 and a speed reducer 312, the speed reducer 312 is fixedly disposed on the lifting platform 200, the first motor 311 is mounted on the lifting platform 200 or the speed reducer 312, an output end of the first motor 311 is connected to an input end of the speed reducer 312, and the turntable 300 is fixedly disposed at an output end of the speed reducer 312. Wherein the first motor 311 is preferably but not limited to a stepper motor or a servo motor, and the speed reducer 312 is preferably but not limited to a worm gear speed reducer.

In this embodiment, as shown in fig. 2 and 13, a first travel switch 910 for sensing the lowering of the lifting platform 200 is disposed at the lower portion of the stand 100, a second travel switch 920 for sensing the raising of the lifting platform 610 is disposed at the upper portion of the stand 100, a third travel switch 930 for sensing the raising of the lifting platform 620 for primary cooling is further disposed at the upper portion of the stand 100, a fourth travel switch 940 for sensing the raising of the lifting platform 630 for secondary cooling is further disposed at the upper portion of the stand 100, and the first travel switch 910, the second travel switch 920, the third travel switch 930 and the fourth travel switch 940 are all electrically connected to a control device, so as to realize precise control of the lowering of the lifting platform 200 and the raising of the lifting platform 600.

In this embodiment, as shown in fig. 3, 4, 7 and 10, the front-rear translation driving mechanism 170 includes a rack 171 fixed on the frame 100, a gear 172 meshed with the rack 171, and a second motor 173 for driving the gear 172 to rotate, the second motor 173 is fixedly installed on the bottom side of the pick-and-place sliding support table 510, two horizontal rails 174 guiding the pick-and-place sliding support table 510 to reciprocate back and forth are provided on the frame 100, the rack 171 is disposed in parallel between the two horizontal rails 174, a front limit switch 175 and a rear limit switch 176 respectively limiting the front-and-rear travel position of the pick-and-place sliding support table 510 are provided on the frame 100, the two limit switches 175, 176 are preferably but not limited to proximity switches, and the front limit switch 175 and the rear limit switch 176 are electrically connected to the control device.

In the present embodiment, as shown in fig. 3 and 9, the fifth lifting driving mechanism 340 includes a pair of cylinders 341, 342, and the left and right ends of the lifting frame 330 are driven by the left cylinder 341 and the right cylinder 342, respectively; the lifting frame 330 comprises a left-falling L-shaped plate 331, a right-falling L-shaped plate 332 and a horizontal pressing bar 333, the horizontal pressing bar 333 is connected between the bottoms of the left-falling L-shaped plate 331 and the right-falling L-shaped plate 332 to form a U-shaped frame 334, the width of the U-shaped frame 334 is smaller than the width of a chute of the chute frame 320, the width of the U-shaped frame 334 is larger than the widths of each lifting pressing plate 600 and the corresponding upper plates 611, 621 and 631, the left-falling L-shaped plate 331 is driven by a left cylinder 341, and the right-falling L-shaped plate 332 is driven by a right cylinder 342. The number of the horizontal pressing bars 333 is two, but not limited thereto. Of course, the fifth lifting driving mechanism 340 may also use an oil cylinder, an electric cylinder, or other electric mechanisms.

In this embodiment, as shown in fig. 8 and 9, a cylinder cover 350 for integrating pipelines is installed at the center of the turntable 300, the cylinder pipelines and the circuits of the four fifth lifting driving mechanisms 340 are led out from the cylinder cover 350, a rotary distributor 351 is disposed in the cylinder cover 350, compressed gas is distributed to each fifth lifting driving mechanism 340, and a gas source (omitted in the drawing) for supplying compressed gas to the rotary distributor 351 is disposed at the upper part (e.g. on a beam plate) of the frame 100, and the gas source includes an air compressor and a gas storage tank.

In this embodiment, as shown in fig. 1 and 2, the bottoms of the heating upper plate 611, the primary cooling upper plate 621 and the secondary cooling upper plate 631 are provided with grooves 640 for accommodating the lifting and lowering frames 330, so that the respective upper plates 611, 621, 631 can be directly pressed on the stamping die 420, and the contact area is large, and the heat and cold transfer effect is good. Wherein, there are two grooves 640, which are respectively used for accommodating two horizontal pressing bars 333. The material of the sliding plate 400 is preferably but not limited to an iron plate, but also can be other materials with good heat conduction effect and difficult deformation, the top surface of the iron plate is coated with a layer of high-resistant Wen Dianbu, the EVA sheet 410 is prevented from being stuck on the iron plate, and the EVA sheet 410 after secondary foaming and stamping is easy to take off. Wherein, the peripheral edges of the high temperature resistant cloth 405 are fixed on the iron plate by rivets or screws.

In this embodiment, as shown in fig. 1, 2, 4 and 11, a plurality of columns 101 are disposed in the frame 100, for example, two columns 101 are disposed on the left and right sides of the frame 100, and two columns 101 are disposed on the rear side of the frame 100; the upper part of the upright post 101 is provided with a beam plate 102, the second lifting driving mechanism 612, the third lifting driving mechanism 622 and the fourth lifting driving mechanism 632 are arranged on the beam plate 102, and the lifting pressing plate 600 is positioned below the beam plate 102; the control device may also be disposed above the beam plate 102. The outside of frame 100 is provided with casing 103, casing 103 contains polylith heat dissipation bounding wall 104, a plurality of ventilation holes 105 have been seted up on the heat dissipation bounding wall 104.

Referring to fig. 1 to 17, in a rotary table EVA stamping forming method, in the rotary table EVA stamping forming machine, initially, the rotary table 300 is located at the lowest position, the heating fixed support table 520, the primary cooling fixed support table 530 and the secondary cooling fixed support table 540 are respectively embedded with the chute frames 320 above the respective fixed support tables, the lifting frames 330 above the heating fixed support table 520, the primary cooling fixed support table 530 and the secondary cooling fixed support table 540 are located at the lowest position, the heating lifting press plate 610, the primary cooling lifting press plate 620 and the secondary cooling lifting press plate 630 are located at the lowest position, each lifting press plate 600 presses the corresponding lifting press frame 330, the lifting press frame 330 above the picking and placing sliding support table 510 is located at the highest position, each support table 500 supports the corresponding sliding plate 400 above, and at this time, the picking and placing sliding support table 510 and the sliding plate 400 above the sliding support table is located at the front end position; the method comprises the following steps:

(1) Firstly, placing the EVA sheet 410 after primary foaming on a sliding plate 400 above a taking and placing sliding support table 510, and then placing a stamping die 420 on the EVA sheet 410; then the front-back translation driving mechanism 170 drives the taking and placing sliding support table 510 to move backwards, so that the sliding plate 400 slides into the sliding chute frame 320 completely; then, the fifth lifting driving mechanism 340 located above the picking and placing sliding supporting table 510 drives the lifting frame 330 to descend, so as to press the stamping die 420; finally, the second lifting driving mechanism 612, the third lifting driving mechanism 622 and the fourth lifting driving mechanism 632 respectively drive the lifting pressing plates 600 to ascend, so that the upper plates 611, 621 and 631 are separated from the corresponding lifting pressing frames 330;

(2) The first lifting driving mechanism 210 drives the turntable 300 to ascend so that each chute frame 320 of the turntable 300 is separated from the corresponding supporting table 500, then the rotary driving mechanism 310 drives the turntable 300 to rotate 90 degrees, then the first lifting driving mechanism 210 drives the turntable 300 to descend so that each chute frame 320 of the turntable 300 clamps the corresponding supporting table 500, finally the second lifting driving mechanism 612 drives the heating lifting pressing plate 610 to descend so that the heating upper plate 611 presses the corresponding lifting pressing frame 330 and the stamping die 420, and at the moment, the EVA sheet 410 on the sliding plate 400 performs secondary heating foaming between the heating upper plate 611 and the heating lower plate 521;

(3) After the heating is completed, the second lifting driving mechanism 612 drives the heating lifting pressing plate 610 to ascend, then the first lifting driving mechanism 210 drives the turntable 300 to ascend, so that each chute frame 320 is separated from the corresponding supporting table 500, then the rotary driving mechanism 310 drives the turntable 300 to continuously rotate 90 degrees, then the first lifting driving mechanism 210 drives the turntable 300 to descend, so that each chute frame 320 of the turntable 300 clamps the corresponding supporting table 500, finally the third lifting driving mechanism 622 drives the primary cooling lifting pressing plate 620 to descend, so that the primary cooling upper plate 621 presses the corresponding lifting pressing frame 330 and the stamping die 420, and at this time, the EVA sheet 410 on the slide plate 400 performs primary cooling shaping between the primary cooling upper plate 621 and the primary cooling lower plate 531;

(4) After the primary cooling is completed, the third lifting driving mechanism 622 drives the primary cooling lifting pressing plate 620 to ascend, then the first lifting driving mechanism 210 drives the turntable 300 to ascend so that each chute frame 320 is separated from the corresponding supporting table 500, then the rotary driving mechanism 310 drives the turntable 300 to continuously rotate for 90 degrees, then the first lifting driving mechanism 210 drives the turntable 300 to descend so that each chute frame 320 of the turntable 300 clamps the corresponding supporting table 500, finally the fourth lifting driving mechanism 632 drives the secondary cooling lifting pressing plate 630 to descend so that the secondary cooling upper plate 631 presses the corresponding lifting pressing frame 330 and the stamping die 420, and at the moment, the EVA sheet 410 on the sliding plate 400 performs secondary cooling shaping between the secondary cooling upper plate 631 and the secondary cooling lower plate 541;

(5) After the secondary cooling is completed, the fourth lifting driving mechanism 632 drives the secondary cooling lifting pressing plate 630 to ascend, then the first lifting driving mechanism 210 drives the turntable 300 to ascend, so that each chute frame 320 is separated from the corresponding supporting table 500, then the rotary driving mechanism 310 drives the turntable 300 to continuously rotate for 90 degrees, then the first lifting driving mechanism 210 drives the turntable 300 to descend, so that each chute frame 320 of the turntable 300 clamps the corresponding supporting table 500, then the fifth lifting driving mechanism 340 above the taking and placing sliding supporting table 510 drives the lifting and pressing frame 330 to ascend, so that the printing and pressing mold 420 is separated, then the front-back translation driving mechanism 170 drives the taking and placing sliding supporting table 510 to move forwards, so that the sliding plate 400 partially slides out of the chute frame 320, and finally the printing and pressing mold 420 on the sliding plate 400 and the secondarily foamed EVA sheet 410 are sequentially taken away;

(6) Repeating the steps (1) to (5).

In this embodiment, the heating lifting platen 610, the primary cooling lifting platen 620 and the secondary cooling lifting platen 630 rise and fall synchronously, so as to realize synchronous working of the picking and placing station, the heating station, the primary cooling station and the secondary cooling station, and improve the utilization rate of the equipment.

In the present embodiment, four sliding plates 400 are sequentially operated according to steps (1) to (5). For example, the four sliding plates 400 are sequentially a first sliding plate 401, a second sliding plate 402, a third sliding plate 403 and a fourth sliding plate 404 in the opposite direction of the rotation of the turntable 300, and the specific operation principle is as follows.

In the initial state, the empty first slide 401, second slide 402, third slide 403, and fourth slide 404 are positioned on the pick-and-place slide support table 510, the secondary cooling fixed support table 540, the primary cooling fixed support table 530, and the heating fixed support table 520 in this order.

When the first slide 401 after discharging (i.e., placing the EVA sheet 410 and the stamping die 420 in sequence) is transferred from the pick-and-place slide support table 510 to the heating fixed support table 520 for hot pressing, the empty second slide 402 is simultaneously transferred from the secondary cooling fixed support table 540 to the pick-and-place slide support table 510 for discharging, the empty third slide 403 is simultaneously transferred from the primary cooling fixed support table 530 to the secondary cooling fixed support table 540, and the empty fourth slide 404 is simultaneously transferred from the heating fixed support table 520 to the primary cooling fixed support table 530.

When the first slide plate 401 after hot pressing is transferred from the heating fixed support table 520 to the primary cooling fixed support table 530 for primary cold pressing, the second slide plate 402 after charging is simultaneously transferred from the taking and placing sliding support table 510 to the heating fixed support table 520 for hot pressing, the empty third slide plate 403 is simultaneously transferred from the secondary cooling fixed support table 540 to the taking and placing sliding support table 510 for discharging, and the empty fourth slide plate 404 is simultaneously transferred from the primary cooling fixed support table 530 to the secondary cooling fixed support table 540.

When the first sliding plate 401 after primary cold pressing is transferred from the primary cooling fixed supporting table 530 to the secondary cooling fixed supporting table 540 for secondary cold pressing, the heated second sliding plate 402 is simultaneously transferred from the heating fixed supporting table 520 to the primary cooling fixed supporting table 530 for primary cooling, the third sliding plate 403 after discharging is simultaneously transferred from the taking and placing sliding supporting table 510 to the heating fixed supporting table 520 for heating, and the empty fourth sliding plate 404 is simultaneously transferred from the secondary cooling fixed supporting table 540 to the taking and placing sliding supporting table 510 for discharging.

When the second cold-pressed first slide plate 401 is transferred from the second cooling fixed support table 540 to the taking and placing sliding support table 510 for taking materials (i.e. sequentially taking away the stamping die 420 and the EVA sheet 410) first and discharging materials later, the first cold-pressed second slide plate 402 is transferred from the first cooling fixed support table 530 to the second cooling fixed support table 540 for secondary cooling, the hot-pressed third slide plate 403 is transferred from the heating fixed support table 520 to the first cooling fixed support table 530 for primary cooling, and the discharged fourth slide plate 404 is transferred from the taking and placing sliding support table 510 to the heating fixed support table 520 for hot pressing.

To this end, the first sled 401 completes a complete operation and cycles through; second sled 402, third sled 403, and fourth sled 404, and so on.

Taking the EVA sole for producing the slippers as an example, as shown in fig. 17, the outline and the hole site of the sole need to be printed on the EVA board 410, then the outline stamping groove and the hole site stamping groove on the EVA board 410 are aligned by a blanking machine for punching, the EVA sole 411 is obtained, and finally the shoelace or the vamp is added, so that the finished slipper product can be obtained.

The present invention is not limited to the above embodiments, but can be modified, equivalent, and modified in any way by those skilled in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a carousel formula EVA seal presses make-up machine, includes frame, its characterized in that: the lower part of the frame is provided with a lifting table which is driven by a first lifting driving mechanism to reciprocate up and down, the lifting table is provided with a turntable which is driven by a rotary driving mechanism to horizontally rotate by 90 degrees each time, four chute frames which are symmetrically distributed about the center of the turntable are uniformly arranged on the turntable, sliding plates which can slide back and forth along the turntable are arranged in the chute frames, the chute frames are provided with lifting pressing frames which are positioned above the sliding plates in a crossing manner, the turntable is provided with four fifth lifting driving mechanisms which are respectively used for driving the lifting pressing frames to reciprocate up and down, the turntable is provided with four supporting tables which are respectively used for supporting corresponding sliding plates, the supporting tables are sequentially provided with a taking and placing sliding supporting table, a heating fixed supporting table, a primary cooling fixed supporting table and a secondary cooling fixed supporting table along the rotating direction, a front-back translation driving mechanism which is used for driving the taking and placing sliding supporting table to reciprocate back and forth relative to the turntable is arranged between the turntable, the secondary cooling fixed supporting table is arranged above the primary cooling fixed supporting table, the secondary cooling plate is arranged below the corresponding chute frame, and the secondary cooling fixed supporting table is arranged below the turntable when the corresponding sliding table is positioned below the turntable; the upper part of the rack is provided with three lifting pressing plates which are driven by a second lifting driving mechanism, a third lifting driving mechanism and a fourth lifting driving mechanism to reciprocate up and down respectively, the lifting pressing plates are a heating lifting pressing plate, a primary cooling lifting pressing plate and a secondary cooling lifting pressing plate in sequence along the rotating direction of the turntable, the heating lifting pressing plate, the primary cooling lifting pressing plate and the secondary cooling lifting pressing plate are respectively in one-to-one correspondence with the heating fixed supporting table, the primary cooling fixed supporting table and the secondary cooling fixed supporting table, a heating upper plate which is matched with the heating lower plate is arranged below the heating lifting pressing plate, a primary cooling upper plate which is matched with the primary cooling lower plate is arranged below the primary cooling lifting pressing plate, and a secondary cooling upper plate which is matched with the secondary cooling lower plate is arranged below the secondary cooling lifting pressing plate; the first lifting driving mechanism, the second lifting driving mechanism, the third lifting driving mechanism, the fourth lifting driving mechanism, the fifth lifting driving mechanism, the rotary driving mechanism and the front-back translation driving mechanism are all electrically connected to the control device.

2. The rotary table EVA stamping and forming machine of claim 1, wherein: the electric heater is arranged in the heating upper plate and the heating lower plate, cooling cavities are arranged in the primary cooling upper plate, the primary cooling lower plate, the secondary cooling upper plate and the secondary cooling lower plate, a cooling medium inlet and a cooling medium outlet of the cooling cavities are respectively connected to corresponding interfaces of the refrigerating device, and the electric heater and the refrigerating device are electrically connected to the control device.

3. The rotary table EVA stamping and forming machine of claim 1, wherein: the first lifting driving mechanism, the second lifting driving mechanism, the third lifting driving mechanism and the fourth lifting driving mechanism are all oil cylinders or air cylinders.

4. The rotary table EVA stamping and forming machine of claim 1, wherein: the rotary driving mechanism comprises a first motor and a speed reducer, the speed reducer is fixedly arranged on the lifting table, the first motor is arranged on the lifting table or the speed reducer, the output end of the first motor is connected with the input end of the speed reducer, and the rotary table is fixedly arranged at the output end of the speed reducer.

5. The rotary table EVA stamping and forming machine of claim 1, wherein: the induction type lifting device comprises a machine frame, and is characterized in that a first travel switch for descending an induction lifting table into place is arranged at the lower part of the machine frame, a second travel switch for ascending an induction heating lifting pressing plate into place is arranged at the upper part of the machine frame, a third travel switch for ascending an induction primary cooling lifting pressing plate into place is also arranged at the upper part of the machine frame, a fourth travel switch for ascending an induction secondary cooling lifting pressing plate into place is also arranged at the upper part of the machine frame, and the first travel switch, the second travel switch, the third travel switch and the fourth travel switch are all electrically connected to a control device.

6. The rotary table EVA stamping and forming machine of claim 1, wherein: the front-back translation driving mechanism comprises a rack fixed on the frame, a gear meshed with the rack and a second motor for driving the gear to rotate, the second motor is fixedly arranged at the bottom side of the taking and placing sliding support table, two horizontal guide rails for guiding the taking and placing sliding support table to reciprocate back and forth are arranged on the frame, the rack is arranged between the two horizontal guide rails in parallel, a front limit switch and a rear limit switch for respectively limiting the front-back travel position of the taking and placing sliding support table are arranged on the frame, and the front limit switch and the rear limit switch are electrically connected to the control device.

7. The rotary table EVA stamping and forming machine of claim 1, wherein: the fifth lifting driving mechanism comprises a pair of air cylinders, and the left end and the right end of the lifting pressing frame are respectively driven by the left air cylinder and the right air cylinder; the lifting pressing frame comprises a left-falling L-shaped plate, a right-falling L-shaped plate and a horizontal pressing strip, wherein the horizontal pressing strip is connected between the bottoms of the left-falling L-shaped plate and the right-falling L-shaped plate to form a U-shaped frame body, the width of the U-shaped frame body is smaller than the width of a chute of the chute frame, the width of the U-shaped frame body is larger than the width of each lifting pressing plate and the corresponding upper plate, the left-falling L-shaped plate is driven by a left cylinder, and the right-falling L-shaped plate is driven by a right cylinder.

8. The rotary table EVA stamping and forming machine according to claim 1 or 7, characterized in that: the bottoms of the heating upper plate, the primary cooling upper plate and the secondary cooling upper plate are respectively provided with a groove for accommodating the lifting and lowering frame.

9. The rotary table EVA stamping and forming machine of claim 1, wherein: a plurality of stand columns are arranged in the frame, a beam plate is arranged at the upper part of each stand column, the second lifting driving mechanism, the third lifting driving mechanism and the fourth lifting driving mechanism are arranged on the beam plate, and the lifting pressing plate is positioned below the beam plate; the outside of frame is provided with the casing, the casing contains polylith heat dissipation bounding wall, a plurality of ventilation holes have been seted up on the heat dissipation bounding wall.

10. A rotary table EVA stamping forming method is characterized in that: the rotary table type EVA stamping forming machine of claim 1 is adopted, wherein the rotary table is positioned at the lowest position at initial time, the heating fixed supporting table, the primary cooling fixed supporting table and the secondary cooling fixed supporting table are respectively embedded with chute frames above the heating fixed supporting table, the lifting frames above the primary cooling fixed supporting table and the secondary cooling fixed supporting table are positioned at the lowest position, the heating lifting pressing plate, the primary cooling lifting pressing plate and the secondary cooling lifting pressing plate are positioned at the lowest position, the lifting pressing plates press the corresponding lifting frames, the lifting and pressing frames above the taking and placing sliding supporting table are positioned at the highest position, the sliding plates above the taking and placing sliding supporting table are propped against the corresponding sliding plates, and the sliding plates above the taking and placing sliding supporting table are positioned at the front end position; the method comprises the following steps:

(6) Repeating the steps (1) to (5).