Multi-layer cold and hot automatic circulation forming production line for composite material products

Abstract

The invention discloses a multi-layer cold and hot automatic circulation forming production line for composite products. A plurality of mold opening and closing stations and auxiliary presses are arranged in cooperation with an annular conveying line. A mold changing trolley capable of transversely moving and longitudinally driving is arranged in cooperation with the annular conveying line; a plurality of forming presses are arranged on the rear side of the die changing trolley, and a die traction frame is arranged on the die changing trolley and can achieve multi-layer die supply; by means of the structure, in-out supply of molds at the mold opening and closing station can be achieved through the annular conveying line, mold supply of the mold changing trolley is further achieved through the annular conveying line, the molds are grouped and gathered through the mold changing trolley, and then the molds are guided to a forming press; the device is high in automation degree, semi-automatic or automatic operation can be achieved in the whole die feeding and discharging process and die gathering and selecting work, synchronous operation production of a set of dies can be achieved, the production efficiency and the product forming precision are improved, the product yield is increased, personnel operation is reduced, and the production cost is reduced. And the occurrence probability of industrial accidents is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of high-performance composite material product extrusion molding, and specifically discloses a composite material product multi-layer hot and cold automatic cycle molding production line capable of realizing the combined use of multiple sets of molds. Background Art

[0002] In the processing of high-performance composite products, when similar products or component products are produced, the existing technology is still independent molding, where the mold is transferred to the inside of the press by personnel or equipment, and the product is extruded by the press.

[0003] The technical disadvantages of the molding methods mentioned above can be summarized as follows: 1. Low efficiency. In the current trend of automated equipment transformation, the independent operation of a single device can no longer meet current production needs; 2. Unable to operate jointly and the degree of automation is low. In the existing composite material production model, most of them still use independent operation of multiple devices, which cannot form a production system or production line. The uncertainty factors in the workers' operation process increase, resulting in an increase in mold failure rate, a decrease in product yield, and even an increase in the risk of work-related accidents.

[0004] In view of the above-mentioned drawbacks, as a technical unit in the heavy press equipment industry, it is very necessary to design a multi-layer hot and cold automatic cycle molding production line for composite products. Its purpose is to replace the manual operation process or steps in the production process with equipment, minimize personnel operation, improve production efficiency and yield rate, and reduce the probability of work-related accidents. Summary of the invention

[0005] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a multi-layer hot and cold automatic cycle molding production line for composite products, which connects multiple hot presses and a mold changing trolley through a ring conveyor line, and is connected to the molding press through the mold changing trolley. During operation, multiple sets of molds can be supplied and used synchronously, thereby improving the efficiency of automated production.

[0006] In order to achieve the above technical objectives, the present invention adopts the following scheme: a composite material product multi-layer hot and cold automatic cycle molding production line, which includes a ring conveyor line, and a plurality of mold opening and closing stations and auxiliary presses are arranged in conjunction with the ring conveyor line; a mold changing trolley that can be moved horizontally and driven longitudinally is arranged in conjunction with the ring conveyor line; a plurality of molding presses are arranged at the rear side of the mold changing trolley, and a multi-layer structure is arranged inside the molding press, and a mold pulling frame is arranged on the mold changing trolley to realize multi-layer mold supply;

[0007] The annular conveyor line is provided with a mold closing conveying area, an upper mold conveying area, a mold storage area, a lower mold conveying area and a mold waiting area. The mold closing conveying area corresponds to a plurality of auxiliary presses; the upper mold conveying area corresponds to the upper mold station of the mold changing trolley, and the lower mold conveying area corresponds to the lower mold station of the mold changing trolley; the mold waiting area is arranged between the mold changing trolley and the auxiliary press; a conveying station is arranged on the mold closing conveying area, and the conveying station can realize the horizontal and vertical conveyance of the mold; the upper mold conveying area and the lower mold conveying area are both provided with mold pushing and pulling devices to pull and load and unload the mold on the mold changing trolley.

[0008] A mold supply area is arranged on the annular conveyor line, and the mold supply area is equipped with a receiving trolley, through which the molds in the mold supply area can be received for maintenance or replacement.

[0009] The mold opening and closing station is provided with a longitudinal conveying roller, and a mold push-pull device is provided in conjunction with the longitudinal conveying roller. The mold push-pull device is provided with a lifting frame, a longitudinal moving track and a driving part, and the driving part is connected with the push-pull plate to realize longitudinal drive; the bottom of the mold push-pull device is provided with a vertical driving device to push the lifting frame and the upper components to move up and down. The left and right sides of the mold opening and closing station are provided with vertical mold opening cylinders, and a top plate is provided above the vertical mold opening cylinder, and a mold opening rod fixing position is provided on the top plate.

[0010] The auxiliary press is equipped with a fixed platform and a movable platform, a driving cylinder is arranged at the bottom of the movable platform, a guide column is arranged between the fixed platform and the movable platform, a rotating seat is arranged at the top of the auxiliary press, a movable beam is arranged on the rotating seat, and an electric hoist is arranged on the movable beam.

[0011] The bottom of the mold changing trolley is provided with a transverse guide part; the mold changing trolley includes a trolley frame, and a transverse drive device is provided on the trolley frame. Multiple layers of mold tables are arranged horizontally at intervals inside the mold changing trolley, and pulling and positioning rods are arranged between the multiple layers of mold tables. The trolley frame is provided with a lifting drive device, and the lifting drive device connects the mold tables by driving belts or chains to realize the vertical pulling and movement of the multiple layers of mold tables; a longitudinal push-pull part is provided on the trolley frame, and a push-pull drive part and a push-pull guide part are provided on the longitudinal push-pull part, and a pulling frame is provided on the push-pull guide part, and the pulling frame moves longitudinally under the drive of the push-pull drive part; a vertical locking cylinder is provided on the pulling frame, and a plurality of vertical hooks are provided on the driving end of the vertical locking cylinder, and the mold bottom plate is hooked by the vertical hooks.

[0012] A vertical linkage cylinder is arranged inside the trolley frame, and the vertical linkage cylinder is connected to the bottom mold table to realize linkage driving.

[0013] A vertical guide portion is arranged inside the trolley frame, and the vertical movement and guidance of the multi-layer mold table is realized through the vertical guide portion.

[0014] The mold table of the trolley frame is provided with side guide wheels and bottom guide wheels, and the mold is guided in and out through the cooperation of the side guide wheels and the bottom guide wheels.

[0015] A mold positioning plate is arranged at the rear side of the trolley frame, and a telescopic driving cylinder is arranged in coordination with the mold positioning plate. The mold positioning plate blocks the mold to prevent the mold from falling off the multi-layer mold table.

[0016] The forming press includes a press frame, a vertical extrusion cylinder is arranged at the lower part or the bottom end of the press frame, a vertical extrusion guide part and a vertical positioning plate are arranged inside the press frame, the press frame realizes vertical guidance of the forming extrusion plate through the vertical extrusion guide part, and a positioning blocking member is arranged on the forming extrusion plate, and the positioning blocking member cooperates with the blocking area on the vertical positioning plate to realize vertical limiting.

[0017] The forming extrusion plate is provided with a guide wheel, through which the auxiliary sliding of the mold is achieved when entering.

[0018] The press frame is provided with a telescopic functional module, which includes a telescopic driving cylinder, and a functional unit is provided at the end of the telescopic driving cylinder. The functional unit is plugged and matched with the functional area on the mold.

[0019] The beneficial effects of the present invention are as follows: through the above arrangement, the present invention is provided with a plurality of mold opening and closing stations and auxiliary presses in cooperation with the annular conveyor line; a mold changing trolley that can be moved laterally and driven longitudinally is provided in cooperation with the annular conveyor line; a plurality of molding presses are provided on the rear side of the mold changing trolley, and a mold pulling frame is provided on the mold changing trolley to realize multi-layer mold supply; through the above structure, the mold in and out supply of the mold opening and closing stations can be realized through the annular conveyor line, and the annular conveyor line also realizes the mold supply of the mold changing trolley, and the molds are grouped and aggregated through the mold changing trolley, and then the molds are directed to the molding press; the present invention has a high degree of automation, and the entire upper and lower mold processes as well as the mold aggregation and selection work can be realized semi-automatically or automatically, and the synchronous operation and production of a complete set of molds can be realized, thereby improving production efficiency and product molding accuracy, improving product yield, reducing personnel operation, and reducing the probability of work-related accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0023] Figure 4 for Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0024] Figure 5 for Figure 1 A magnified schematic diagram of the structure of the middle B region;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the auxiliary press;

[0026] Figure 7 It is a schematic diagram of the rear view structure of the auxiliary press;

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the front side of the mold changing trolley;

[0028] Fig. 9 This is a schematic diagram of the three-dimensional structure of the front side of the mold changing trolley;

[0029] Fig.10 This is a schematic diagram of the left side structure of the mold changing trolley;

[0030] Fig.11 This is a schematic diagram of the right side structure of the mold changing trolley;

[0031] Fig.12 for Figure 8 A magnified schematic diagram of the structure of the middle C region;

[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the front side of the forming press;

[0033] Fig.14 It is a schematic diagram of the three-dimensional structure of the rear side of the forming press;

[0034] Fig.15 It is a schematic diagram of the rear structure of the forming press;

[0035] Fig.16 for Fig.13 A magnified schematic diagram of the structure of the middle D region;

[0036] In the attached drawings, 1, annular conveyor line, 11, mold closing conveying area, 111, conveying station, 112, surrounding conveying roller, 113, longitudinal conveyor belt, 12, upper mold conveying area, 121, sprocket, 122, annular driving member, 123, lifting frame, 124, positioning plate, 125, positioning protrusion, 126, pulling protrusion, 127, longitudinal moving track; 13, mold storage area, 14, lower mold conveying area, 15, mold waiting area;

[0037] 2. Auxiliary press, 21. Sensor, 22. Guide column, 23. Driving cylinder, 24. Moving table, 25. Fixed table, 26. Rotating seat, 27. Moving beam, 28. Electric hoist;

[0038] 3. Mold changing trolley, 31. Trolley frame, 311. Side guide wheel, 312. Bottom guide wheel, 313. Rotary encoder, 314. Wire support frame, 315. Transverse position sensor; 32. Lifting drive device, 321. Lifting drive shaft, 322. Lifting chain, 323. Bottom gear seat, 324. Bottom gear; 33. Longitudinal push-pull part, 331. Longitudinal platform, 332. Push-pull screw, 333. Pulling frame, 334. Longitudinal guide rail; 34. Telescopic drive cylinder, 341. Mold positioning plate; 35. Transverse drive motor; 36. Transverse track; 37. Mold table I, 371 Mold table II, 372 Mold table III, 373 Mold table IV, 374 Pulling positioning rod; 38. Vertical linkage cylinder; 39. Vertical locking cylinder, 391. Vertical hook;

[0039] 4. Forming press, 40. Press frame, 41. Telescopic drive cylinder, 42. Top frame, 43. Vertical extrusion guide rail, 44. Sliding block, 45. Forming extrusion plate, 451. Guide wheel, 46. Functional unit, 47. Vertical extrusion cylinder, 471. Forming bottom plate, 48. Sensor, 49. Vertical positioning plate, 491. Blocking area; 401. Cold forming press.

[0040] 5. Observation operation platform, 51. Pump station, 52. Hot press oil supply station;

[0041] 6. Observation deck;

[0042] 7. Mold supply area, 71. Receiving trolley, 711. Lower mold roller, 72. Mold supply roller, 73. Longitudinal outward conveyor belt;

[0043] 8. Mold opening and closing station, 80. Longitudinal conveying roller, 81. Vertical mold opening cylinder, 82. Top plate, 83. Mold opening rod fixing position;

[0044] 9. Mould bottom plate, 91. Hook slot. DETAILED DESCRIPTION

[0045] As shown in the accompanying drawings, the present invention discloses a multi-layer hot and cold automatic circulation molding production line for composite products. This embodiment shows the specific structure of the multi-layer hot and cold automatic circulation molding production line for composite products in detail, and explains the method of use through specific embodiments. Those skilled in the art can implement the technical solution or make further technical extensions on the basis of the technical solution. The protection scope of the present invention shall be based on the claims.

[0046] Embodiment 1:

[0047] A composite material product multi-layer hot and cold automatic cycle molding production line, its specific structure and the functions of each part are described as follows:

[0048] It includes a circular conveyor line 1, such as Figure 1 , 2 As shown in FIG. 3 , the annular conveyor line 1 is provided with a mold closing conveying area 11 , an upper mold conveying area 12 , a mold storage area 13 , a lower mold conveying area 14 and a mold waiting area 15 .

[0049] The mold closing and conveying area 11 is provided corresponding to a plurality of auxiliary presses 2, and a mold opening and closing station 8 is provided between each auxiliary press 2 and the mold closing and conveying area 11; a mold changing trolley 3 capable of transverse movement and longitudinal drive is provided in cooperation with the annular conveying line 1; a plurality of molding presses 4 are provided at the rear side of the mold changing trolley 3, including a hot press and a cold press; a multi-layer structure is provided inside the molding press 4, and a mold pulling frame is provided on the molding press 3 to realize multi-layer mold supply;

[0050] The upper mold conveying area 12 corresponds to the upper mold station of the molding press 3, and the lower mold conveying area 14 corresponds to the lower mold station of the molding press 3; the mold waiting area 15 is arranged between the molding press 3 and the auxiliary press 2; the mold closing conveying area 11 is provided with a conveying station 111, and the conveying station 111 is provided with a surrounding conveying roller 112 and a longitudinal conveying belt 113. The surrounding conveying roller 112 and the longitudinal conveying belt 113 are combined to realize the horizontal and longitudinal conveying of the mold; the upper mold conveying area 12 and the lower mold conveying area 14 are both provided with a mold pushing and pulling device to pull and load the mold on the molding press 3.

[0051] The more specific detailed structure is as follows: the mold opening and closing station 8 is provided with a longitudinal conveying roller 80, and a mold push-pull device is provided in conjunction with the longitudinal conveying roller. In this embodiment, the mold push-pull device in the upper mold conveying area 12 and the lower mold conveying area 14 and the mold push-pull device on the mold opening and closing station 8 have the same structure, and are described uniformly here. The specific structure is referenced Figure 4As shown, it includes a lifting frame 123, on which a longitudinal moving track 127 is arranged, and a pulling protrusion 126 that can be longitudinally moved is arranged in conjunction with 127, and the pulling protrusion 126 is used as a push-pull plate; the driving part is connected with the pulling protrusion 126 to realize longitudinal drive, and the driving part includes a sprocket 121 and an annular driving member 122 surrounding the sprocket, and the annular driving member 122 can be a chain or a belt. In this embodiment, a chain is adopted, and a positioning protrusion 125 is fixed on the chain, and the positioning protrusion 125 realizes longitudinal drive when it is in compression contact with the pulling protrusion 126. The bottom of the mold push-pull device is provided with a vertical driving cylinder to push the entire lifting frame 123 and the upper components up and down. When the device is used, the positioning protrusion 125 fixed on the annular driving member 122 rotates forward or reversely to drive the pulling protrusion 126 to move forward and backward to pull the hook groove 91 on the mold bottom plate 9. The lifting frame 123 can be raised and lowered to avoid the mold bottom plate 9 and adjust the position before and after the positioning protrusion 125.

[0052] like Figure 5 As shown, vertical mold opening cylinders 81 are respectively provided on the left and right sides of the mold opening and closing station 8, a top plate 82 is provided above the vertical mold opening cylinder 81, and a mold opening rod fixing position 83 is provided on the top plate 82. When the mold on the mold opening and closing station 8 is heavy and cannot be manually disassembled vertically, a support rod is placed on the two mold opening rod fixing positions 83 to support the upper mold upward, thereby realizing mold opening.

[0053] like Figure 5 , 6 As shown in Figures 7 and 8, the auxiliary press 2 is equipped with a fixed platform 25 and a movable platform 24. A driving cylinder 23 is provided at the bottom of the movable platform 24. A guide column 22 is provided between the fixed platform 25 and the movable platform 24. A rotating seat 26 is provided at the top of the auxiliary press 2. A movable beam 27 is provided on the rotating seat 26. An electric hoist 28 is provided on the movable beam 27. The electric hoist 28 on the auxiliary press 2 can assist in opening a large mold, thereby realizing the removal of internal products or the placement of internal materials. The auxiliary press 2 can also realize pre-tightening of the fixed platform 25 and the movable platform 24.

[0054] The bottom of the mold changing trolley 3 is provided with a transverse track 36 as a transverse guide part, and a transverse position sensor 315 and a rotary encoder 313 are also provided to realize the control of transverse accuracy; the forming press 3 includes a trolley frame 31, and a transverse drive motor 35 is provided on the trolley frame 31 as a transverse drive device. The molding press 3 is provided with multiple layers of mold tables at horizontal intervals, such as mold table I 37, mold table II 371, mold table III 372, and mold table IV 373. A pulling positioning rod 374 is provided between each adjacent layer of mold tables. The trolley frame 31 is provided with a lifting drive device 32, and the lifting drive device The device 32 includes a driving motor, and a lifting driving shaft 321 is provided on the driving motor to transmit power to the left and right sides of the multi-layer mold table. The left and right sides are connected to the mold table through a driving belt or a lifting chain 322 to realize the vertical pulling movement of the multi-layer mold table. A bottom gear seat 323 and a bottom gear 324 are provided on the left and right sides of the bottom of the trolley frame 31. The top gear and the bottom gear 324 are provided on the lifting driving shaft 321 to cooperate to realize the encirclement of the lifting chain 322. Because a pulling positioning rod 374 is provided between the multi-layer mold tables, the lifting chain 322 can realize the overall pulling while the minimum gap between the multi-layer mold tables is relatively stable.

[0055] The trolley frame 31 is provided with a longitudinal push-pull part 33, and a longitudinal platform 331 is provided on the longitudinal push-pull part 33. A motor is provided on the top of the longitudinal platform 331 as a push-pull driving part, and a longitudinal guide rail 334 is provided on the bottom of the longitudinal platform 331 as a push-pull guiding part. A pulling frame 333 is provided on the longitudinal guide rail 334. The pulling frame 333 is connected to a push-pull screw 332 through a slider, and moves longitudinally under the drive of the push-pull driving part, and the push-pull screw 332 drives the slider to drive the pulling frame 333 to move longitudinally. It should be pointed out that a vertical locking cylinder 39 is provided on the pulling frame 333, and a plurality of vertical hooks 391 are vertically provided on the driving end of the vertical locking cylinder 39, and the plurality of vertical hooks are respectively provided corresponding to each layer of the mold table, and the hooking of the hook groove 91 on the mold bottom plate 9 is achieved through the vertical hooks. Through the above structural arrangement, the forming press 3 can realize receiving the molds sent up by the upper mold conveying area 12 one by one. When receiving, the lifting chain 322 drives the mold table II 371 to move upward, and the mold table II 371 drives the mold table III 372 and the mold table IV 373 to move upward under the pulling of the pulling positioning rod 374. When reaching the receiving height of the rear forming press 4, the mold base plate 9 is locked by the vertical hook 391, and then the multi-layer molds are pushed to the rear forming press 4 at the same time through the pulling frame 333, or the molds on the rear forming press are pulled onto the mold table. The above-mentioned multi-layer molds can be a matching mold group in the same product, or can be the same batch of products of the same model or similar model, etc., and the purpose is to achieve simultaneous production.

[0056] Furthermore, the present invention also provides a vertical guide part inside the trolley frame 31, which can be a track or a track groove, and its purpose is to guide the vertical movement of the multi-layer mold table through this vertical guide part. Because when the mold table of this molding press 3 descends, it mainly falls by the deadweight of each layer of the mold table, but this falling method has the disadvantage of different parts on the left and right sides. In order to improve the above problem, the present invention provides multiple vertical linkage cylinders 38 between the mold table IV373 and the trolley frame 31, and the multiple vertical linkage cylinders 38 are symmetrically arranged on the left and right. The vertical linkage cylinders 38 are connected to the bottom layer of the mold table and realize linkage drive, and are combined with the pulling and positioning rod 374 to realize vertical pulling and positioning.

[0057] Furthermore, each mold platform of the trolley frame 31 is provided with side guide wheels 311 and bottom guide wheels 312, and the side guide wheels 311 and bottom guide wheels 312 cooperate with each other to realize support and guidance of the mold bottom plate 9 when it moves in and out.

[0058] The present invention also provides a mold positioning plate 341 at the rear side of the trolley frame 31, and a telescopic drive cylinder 34 is provided in cooperation with the mold positioning plate 341, and the mold is blocked by the mold positioning plate 341 to prevent the mold from falling off the multi-layer mold table. A wire support frame 314 is also provided at the rear side of the trolley frame 31 to cooperate with the outside to realize cable support.

[0059] like Fig.13 , 14 As shown in Figures 15 and 16, the molding press 4 disclosed in the present invention includes a press frame 40. A vertical extrusion cylinder 47 is provided at the lower part or the bottom end of the press frame 40. The vertical extrusion cylinder 47 applies force to the molding base plate 471. The molding base plate 471 is used to vertically extrude the multi-stage molding extrusion plate to realize the extrusion of the mold and the molding of the product. A vertical extrusion guide track 43 and a vertical positioning plate 49 are provided inside the press frame 40. The press frame 40 realizes the vertical guidance of the molding extrusion plate 45 through the vertical extrusion guide track 43. The molding extrusion plate 45 is provided with a sliding block 44 as a positioning stopper. The sliding block 44 cooperates with the blocking area 491 on the vertical positioning plate 49 to realize vertical limiting. A guide wheel 451 is provided on the molding extrusion plate 45. The guide wheel 451 is used to realize the auxiliary sliding of the mold base plate 9 when entering.

[0060] Furthermore, the press frame 40 is also provided with a telescopic functional module, which includes a telescopic drive cylinder 41, and a functional unit 46 is provided at the end of the telescopic drive cylinder 41, and the functional unit 46 is plugged and matched with the functional area on the mold. Such a functional area can be a pressing area, a gluing area, and the like.

[0061] The present invention also provides a sensor 48 at one end of the die of the molding press 4 to avoid mis-extrusion during the upper and lower die processes.

[0062] In conjunction with the above modules, the annular conveyor line 1 is provided with a mold supply area 7, in which a plurality of mold supply rollers 72 are provided, which are arranged toward the annular conveyor line 1 and are used to transport molds to the annular conveyor line 1 or to receive the annular conveyor line 1.

[0063] The mold supply area 7 is equipped with a receiving trolley 71. The mold supply area 7 cooperates with the mold supply roller 72 to be provided with a longitudinal outward conveyor belt 73 toward the receiving trolley 71, so as to realize the movement and transportation of the mold between the receiving trolley 71 and the mold supply area 7, thereby realizing the maintenance or replacement of the mold.

[0064] The present invention is also provided with an observation operation platform 5, a pump station 51, a hot press oil supply station 52 and an observation platform 6, which serve to provide a standing place and an observation place for employees, by realizing the hydraulic configuration of the system.

[0065] Embodiment 2:

[0066] When the present invention is in operation, at most 4 molds can be waiting in the mold waiting area 15;

[0067] On the mold opening and closing station 8, wait for the mold. The mold waiting area 15 receives the mold waiting signal and sends a pair of molds to the mold opening and closing station 8. After the mold is positioned on the mold opening and closing station 8, the upper mold is gently pried open manually. If auxiliary mold opening is required, the two mold opening rods on the upper mold are manually assisted to align, and the mold opening rods are placed on the mold opening rod fixed position 83, and the switch button is pressed. The vertical mold opening cylinder 81 applies vertical force to open the upper mold to separate the upper and lower molds. For example, if the mold is too thin, it is necessary to open the upper mold. Select 0.5 The mold is lifted and opened by an electric hoist 28 of T; after the mold is opened, the lower mold is transported to the direction of the 50T auxiliary press 2 for a station distance to clean the upper and lower mold surfaces (such as: if it is a mold that has been formed, take the product out first and then clean the mold), lay the raw materials on the lower mold, and return the lower mold with the raw materials laid back to the mold opening and closing station 8. After the lower mold is sent back, the upper mold is covered. After the lower mold with the raw materials laid and the upper mold are covered, the entire mold is sent to the 50T auxiliary press 2.

[0068] On the auxiliary press 2, the mold is closed, and the blowing and vacuuming are tested. The mold can be preheated to 80 degrees. If the blowing and vacuuming are unqualified, press the switch to send the mold out from the front of the 50T auxiliary press 2, and the receiving trolley 71 will receive the mold. The operator at the mold opening and closing position will call the next group of molds again (opening and closing the mold, auxiliary materials); if the blowing and vacuuming are qualified; after the mold is preheated and reaches the required time, the mold is sent back to the ring line, and reaches the upper mold conveying area through the ring line, scans the code to confirm, and sends it to the corresponding position on the mold changing trolley.

[0069] In this embodiment, two four-layer mold-changing trolleys 3 are used to correspond to three hot forming presses 4 and two cold forming presses 4, and the two four-layer mold-changing trolleys 3 are mold-changing trolley No. 1 3 and mold-changing trolley No. 2 3 respectively;

[0070] The action of the No. 1 mold changing trolley 3 is as follows: When the mold changing trolley 3 receives the mold from the upper mold conveying area 12, it receives the mold layer by layer. It is required to receive the mold from the top layer. After receiving each layer of the mold, the Z axis rises 410mm to the same height, and then receives the next layer of the mold. In order to ensure the precise control of the Z axis rising height, a high-precision displacement sensor is used in the Z axis direction to ensure that the mold changing trolley 3 can smoothly receive the mold, and each mold can be sent to the same height in the press; when the mold changing trolley 3 receives four molds, the mold changing trolley 3 will pull the four molds up to the corresponding height in the Z axis direction, and the horizontal drive motor 35 will be braked at this time; then the Y axis moves forward for a short distance, and the vertical locking cylinder 39 rises vertically, and the vertical hook 391 hangs the four molds. Then the mold-changing trolley 3 starts to move in the x-axis direction, moves to the front of the No. 1 200TL forming press 4 and stops. In order to ensure the accuracy of the position, a photoelectric switch is used in combination with a rotary encoder 313 to perform position detection and positioning simultaneously; the longitudinal push-pull part 33 on the mold-changing trolley 3 is opened, and then the four molds are pushed into the forming press 4 in the Y-axis direction. After they are in place, the vertical locking cylinder 39 is lowered, and the four molds are separated from the vertical hook 391 at the same time, and the longitudinal push-pull part 33 is retracted. The No. 1 mold-changing trolley 3 moves to the original station, and the Z axis drops to the lowest point, ready to receive the next car of molds; the above actions are repeated continuously, and the molds are sent to the No. 2 and No. 3 200TL thermoforming presses 4 respectively. After each mold delivery, it returns to the original station to wait.

[0071] On the forming press 4, after receiving the mold, the forming press 4 moves from bottom to top, and closes and pressurizes the four molds; after closing the molds, the functional unit 46 behind the forming press 4 is activated, and vacuuming is automatically performed. The blowing device is inserted into the standard tray, and vacuuming and blowing are performed on the mold; the mold closing and pressurizing and heating takes about 30 to 45 minutes; after the product is formed, the vacuuming and blowing device retreats and opens, and the rear press moves downward again, opening layer by layer into place; waiting for the No. 2 mold changing trolley 3 to transfer the mold to the corresponding cold forming press 401; when the No. 2 mold changing trolley 3 takes away the mold, the No. 1 mold changing trolley 3 will bring the mold in again.

[0072] A detailed description of the action of the second die-changing carriage 3 is provided when the two cold forming presses 401 are unloaded:

[0073] The second mold-changing trolley 3 moves to the front of the already formed and opened hot forming press 4, in front of the No. 2 station or on the No. 3 station or the No. 4 station, the height position and other aspects are in place synchronously, and the longitudinal push-pull part 33 is opened; the No. 2 mold-changing trolley 3 moves to the front of the hot forming press, the vertical locking cylinder 39 rises vertically, the vertical hook 391 hangs the four molds, the No. 2 mold-changing trolley 3 pulls the four molds from the hot forming press 4 to the No. 2 mold-changing trolley 3 at the same time, and the longitudinal push-pull part 33 of the No. 2 mold-changing trolley 3 is closed; the No. 2 mold-changing trolley 3 is transferred from the hot forming press station 4 to the front of the cold forming press station 401; the longitudinal push-pull part 33 on the No. 2 mold-changing trolley 3 is opened; then in the Y-axis direction, the four molds are pushed into the cold forming press 401 at the same time, and the vertical locking cylinder 39 is lowered after it is in place, and the four molds are separated from the vertical hook 391 at the same time, and the longitudinal push-pull part 33 is retracted;

[0074] A detailed description of the actions of the second die change trolley 3 is provided when the two cold forming presses 401 are fully loaded:

[0075] The mold changing trolley No. 2 moves to the front of the nearest cold forming press 401 which is about to complete forming; within the first time after the cold forming press 401 is opened and completed, the Y axis of the mold changing trolley No. 2 3 moves into the cold forming press 401, the vertical locking cylinder 39 rises vertically, and the vertical hook 391 hangs the four molds; the mold changing trolley No. 2 3 pulls the four molds from the cold forming press 401 into the trolley at the same time, and the longitudinal push-pull part 33 on the mold changing trolley No. 2 3 is closed. After it is in place, the vertical locking cylinder 39 descends, and the four molds are separated from the vertical hook 391 at the same time, and the longitudinal push-pull part 33 is retracted, and the Z axis of the mold changing trolley No. 2 3 moves down to the bottom layer and is flush with the ring conveyor line 1; the push-pull mechanism on the ring conveyor line 1 takes out the molds layer by layer and transfers them to the ring conveyor line 1 until all the molds are emptied.

[0076] To sum up, the present invention realizes the supply of molds in and out of the split mold station through the annular conveyor line, and the annular conveyor line also realizes the mold supply of the mold changing trolley, and the molds are grouped and aggregated by the mold changing trolley, and then the molds are directed to the molding press; the present invention has a high degree of automation, and the entire upper and lower mold processes as well as the mold aggregation and selection work can be semi-automatic or automatic, and the synchronous operation and production of a set of molds can be realized, thereby improving production efficiency and product molding accuracy, improving product yield, reducing personnel operations, and reducing the probability of work-related accidents.

Claims

1. A multi-layer hot and cold automatic cycle molding production line for composite products, characterized by: It includes a circular conveyor line, and is equipped with a plurality of mold opening and closing stations and auxiliary presses in coordination with the circular conveyor line; a mold changing trolley capable of horizontal movement and longitudinal drive is arranged in coordination with the circular conveyor line; a plurality of molding presses are arranged at the rear side of the mold changing trolley, and a multi-layer structure is arranged inside the molding presses, and a mold pulling frame is arranged on the mold changing trolley to realize multi-layer mold supply; The annular conveyor line is provided with a mold closing conveying area, an upper mold conveying area, a mold storage area, a lower mold conveying area and a mold waiting area. The mold closing conveying area corresponds to a plurality of auxiliary presses; the upper mold conveying area corresponds to the upper mold station of the mold changing trolley, and the lower mold conveying area corresponds to the lower mold station of the mold changing trolley; the mold waiting area is arranged between the mold changing trolley and the auxiliary press; a conveying station is arranged on the mold closing conveying area, and the conveying station can realize the horizontal and vertical conveyance of the mold; the upper mold conveying area and the lower mold conveying area are both provided with mold pushing and pulling devices to pull and load and unload the mold on the mold changing trolley.

2. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 1, characterized in that: A mold supply area is arranged on the annular conveyor line, and the mold supply area is equipped with a receiving trolley, through which the molds in the mold supply area can be received for maintenance or replacement.

3. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 1, characterized in that: The mold opening and closing station is provided with a longitudinal conveying roller, and a mold pushing and pulling device is provided in conjunction with the longitudinal conveying roller. The mold pushing and pulling device is provided with a lifting frame, a longitudinal movement track and a driving part. The driving part is connected to the pushing and pulling plate to realize longitudinal drive; the bottom of the mold pushing and pulling device is provided with a vertical driving device to push the lifting frame and the upper components to move up and down.

4. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 3, characterized in that: Vertical mold opening cylinders are arranged on the left and right sides of the mold opening and closing station, a top plate is arranged above the vertical mold opening cylinder, and a mold opening rod fixing position is arranged on the top plate.

5. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 1, characterized in that: The auxiliary press is equipped with a fixed platform and a movable platform, a driving cylinder is arranged at the bottom of the movable platform, a guide column is arranged between the fixed platform and the movable platform, a rotating seat is arranged at the top of the auxiliary press, a movable beam is arranged on the rotating seat, and an electric hoist is arranged on the movable beam.

6. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 1, characterized in that: The bottom of the mold changing trolley is provided with a transverse guide part; the mold changing trolley includes a trolley frame, and a transverse drive device is provided on the trolley frame. Multiple layers of mold tables are arranged horizontally at intervals inside the mold changing trolley, and pulling and positioning rods are arranged between the multiple layers of mold tables. The trolley frame is provided with a lifting drive device, and the lifting drive device connects the mold tables by driving belts or chains to realize the vertical pulling and movement of the multiple layers of mold tables; a longitudinal push-pull part is provided on the trolley frame, and a push-pull drive part and a push-pull guide part are provided on the longitudinal push-pull part, and a pulling frame is provided on the push-pull guide part, and the pulling frame moves longitudinally under the drive of the push-pull drive part; a vertical locking cylinder is provided on the pulling frame, and a plurality of vertical hooks are provided on the driving end of the vertical locking cylinder, and the mold bottom plate is hooked by the vertical hooks.

7. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 6, characterized in that: A vertical linkage cylinder is arranged inside the trolley frame, and the vertical linkage cylinder is connected to the bottom mold table to realize linkage driving.

8. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 6, characterized in that: A vertical guide portion is arranged inside the trolley frame, and the vertical movement and guidance of the multi-layer mold table is realized through the vertical guide portion.

9. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 6, characterized in that: A mold positioning plate is arranged at the rear side of the trolley frame, and a telescopic driving cylinder is arranged in coordination with the mold positioning plate. The mold positioning plate blocks the mold to prevent the mold from falling off the multi-layer mold table.

10. The composite material product multi-layer hot and cold automatic cycle molding production line according to claim 1, characterized in that: The forming press includes a press frame, a vertical extrusion cylinder is arranged at the lower part or the bottom end of the press frame, a vertical extrusion guide part and a vertical positioning plate are arranged inside the press frame, the press frame realizes vertical guidance of the forming extrusion plate through the vertical extrusion guide part, and a positioning blocking member is arranged on the forming extrusion plate, and the positioning blocking member cooperates with the blocking area on the vertical positioning plate to realize vertical limiting.

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