Double-station universal type die changing trolley

Abstract

The utility model relates to a double-station universal type die changing trolley which comprises a die changing trolley body, the die changing trolley body comprises a machine frame and two die changing stations arranged on the machine frame, each die changing station comprises a die push-pull mechanism, a two-way transmission roller conveying mechanism and a positioning idler wheel assembly, the die push-pull mechanism is located on one side of the roller conveying mechanism, and the positioning idler wheel assembly is located on the other side of the roller conveying mechanism. The positioning roller assembly is located on the side, away from the roller conveying mechanism, of the mold push-pull mechanism, the roller conveying mechanism comprises a first chain wheel and chain driving mechanism and a plurality of rollers, the two ends of each roller are rotationally connected with the rack, and the driving end of the first chain wheel and chain driving mechanism is connected with the rollers. The first chain wheel and chain driving mechanism is used for driving the roller to rotate in the forward direction and the reverse direction. According to the mold changing trolley, mold changing operation of injection molding machines at different side ends is achieved, the universality is improved, the mold changing stability is improved, the mold changing efficiency is improved, and the service cycle is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mold changing vehicles, in particular to a dual-station universal mold changing vehicle. Background Art

[0002] Existing dual-station mold-changing carts typically include a push-pull mechanism. The cart first transfers the mold to the side of the injection molding machine. The push-pull mechanism then pulls the completed mold out of the machine, and then pushes a new mold back into the machine. These existing dual-station mold-changing carts only perform mold changes for one injection molding machine, resulting in poor versatility. Furthermore, when the mold is heavy, the cart's push-pull mechanism pushes the mold in and out of the machine, which can easily cause the mold to tilt, affecting mold-changing efficiency and damaging the push-pull mechanism's chain, shortening the cart's lifespan. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a dual-station universal mold changing vehicle, which not only realizes the mold changing operation of injection molding machines at different side ends, thereby improving versatility, but also improves the stability of mold changing for heavier molds, thereby improving mold changing efficiency and service life.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a double-station universal mold changing cart, including a mold changing cart, the mold changing cart includes a frame and two mold changing stations arranged on the frame, the mold changing stations include a mold pushing and pulling mechanism, a two-way transmission roller conveying mechanism and a positioning roller assembly, the mold pushing and pulling mechanism is located on one side of the roller conveying mechanism, and the positioning roller assembly is located on the side of the mold pushing and pulling mechanism away from the roller conveying mechanism.

[0005] The roller conveying mechanism includes a first sprocket chain driving mechanism and several rollers, both ends of which are rotatably connected to the frame respectively, the first sprocket chain driving mechanism is installed at the bottom of the frame, the driving end of the first sprocket chain driving mechanism is connected to the several rollers, and the first sprocket chain driving mechanism is used to drive the rollers to rotate in the forward and reverse directions.

[0006] In one embodiment, the mold push-pull mechanism of the double-station universal mold changing vehicle includes a second sprocket chain drive mechanism, a guide rail assembly with adjustable length and a hook assembly. The second sprocket chain drive mechanism is installed at the top of the frame, the driving end of the second sprocket chain drive mechanism is connected to the hook assembly, the hook assembly is slidably matched with the guide rail assembly, and the second sprocket chain drive mechanism is used to drive the hook assembly to move horizontally along the guide rail assembly.

[0007] In one embodiment, the guide rail assembly of the double-station universal mold changing vehicle includes a first guide rail, a second guide rail assembly and a third guide rail assembly, the first guide rail is installed on the frame, the second guide rail assembly includes a first cylinder and a second guide rail that move horizontally, the driving end of the first cylinder is connected to the second guide rail, the second guide rail slides with the frame, and one end of the second guide rail is against the first guide rail, the third guide rail assembly includes a second cylinder and a third guide rail that move up and down, the second cylinder is installed at the bottom end of the frame, the driving end of the second cylinder is connected to the third guide rail, when the first cylinder drives the second guide rail to move horizontally outside the trolley, the second cylinder drives the third guide rail to move upward, so that the two ends of the third guide rail are respectively against the first guide rail and the second guide rail.

[0008] In one embodiment, the hook assembly of the double-station universal mold changing vehicle includes a base, a hook and two third cylinders. The hook includes a rotating end and a hook end. The rotating end is hinged to the base. The two third cylinders are installed at the top of the hook end. The driving end of the third cylinder passes through the hook and is connected to the base. The third cylinder is used to drive the hook end to drive the rotating end to rotate around the base.

[0009] In one embodiment, the positioning roller assembly of the double-station universal mold changing vehicle includes a fixed plate and a limiting plate, and a plurality of rollers are arranged between the fixed plate and the limiting plate. The two ends of the rollers are rotatably connected to the fixed plate and the limiting plate, and the limiting plate is provided with a plurality of blocks for guiding the mold.

[0010] In one embodiment, the input end of the positioning roller assembly of the double-station universal mold changing vehicle is provided with a second limiting assembly, the second limiting assembly includes a fifth cylinder and a second limiting block, and the driving end of the fifth cylinder is connected to the second limiting block.

[0011] In one embodiment, the mold changing station of the double-station universal mold changing vehicle is further provided with a plurality of anti-slip pedals, the bottoms of the plurality of pedals are respectively connected to the frame through brackets, the plurality of pedals are respectively located between adjacent rollers and the upper surfaces of the pedals are not higher than the tops of the rollers.

[0012] In one embodiment, a plurality of first limiting components for limiting the mold are respectively provided at both ends of the mold changing station of the double-station universal mold changing vehicle. The first limiting component includes a fourth cylinder and a first limiting block, and the driving end of the fourth cylinder is connected to the first limiting block.

[0013] In one embodiment, the bottom of the double-station universal mold changing vehicle is symmetrically provided with two driving wheels, a plurality of driven wheels and a third sprocket chain drive mechanism, a rotating shaft is provided between the two driving wheels, a driving end of the third sprocket chain drive mechanism is connected to the rotating shaft, and the third sprocket chain drive mechanism is used to drive the rotating shaft to drive the two driving wheels to rotate.

[0014] In one embodiment, the dual-station universal mold changing vehicle is provided with fences at both ends and a platform at one end.

[0015] The beneficial effects of this application are:

[0016] The present application provides a double-station universal mold changing cart, which adopts a mold push-pull mechanism and a two-way transmission roller conveying mechanism to change molds. It not only realizes the mold changing operation of different side-end injection molding machines and improves the versatility, but also improves the stability of mold changing for heavier molds, thereby improving the mold changing efficiency and service life.

[0017] The mold changing cart uses two mold changing stations to remove the completed mold from the injection molding machine and move the new mold into the injection molding machine. This design greatly improves the mold changing efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a dual-station universal mold changing vehicle according to an embodiment of the present application from one perspective;

[0019] Figure 2 A schematic diagram of a dual-station universal mold changing vehicle according to an embodiment of the present application from another perspective;

[0020] Figure 3 This is a schematic diagram of the frame, mold push-pull mechanism, roller conveying mechanism, and positioning roller assembly of a dual-station universal mold changing vehicle according to an embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of a positioning roller assembly and a mold push-pull mechanism of a dual-station universal mold changing vehicle according to an embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of a first mold, a second mold, and a mold changing cart of a dual-station universal mold changing cart according to an embodiment of the present application;

[0023] Figure 6 Schematic diagram of a double-station universal mold changing cart, a first injection molding machine, and a second injection molding machine according to an embodiment of the present application;

[0024] in:

[0025] 1. Mold changing car; 2. Frame; 3. Mold changing station; 4. First mold; 5. Second mold; 6. First injection molding machine; 7. Second injection molding machine; 11. Driving wheel; 12. Driven wheel; 13. Rotating shaft; 14. Third sprocket chain drive mechanism; 15. Fence; 16. Step; 32. Mold push-pull mechanism; 33. Roller conveying mechanism; 34. Positioning roller assembly; 35. Second limit assembly; 36. First limit assembly; 311. Pedal; 321. Second sprocket chain drive mechanism; 322. Guide rail assembly; 323. Hook assembly; 100. First Guide rail; 101, second guide rail assembly; 102, third guide rail assembly; 103, base; 104, hook; 105, third cylinder; 001, first cylinder; 002, second guide rail; 003, second cylinder; 004, third guide rail; 005, rotating end; 006, hook end; 331, first sprocket chain drive mechanism; 332, roller; 341, fixed plate; 342, limit plate; 343, roller; 344, stop block; 351, fifth cylinder; 352, second limit block; 361, fourth cylinder; 362, first limit block. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, an embodiment of the present application provides a dual-station universal mold changing cart, including a mold changing cart 1, the mold changing cart 1 includes a frame 2 and two mold changing stations 3 arranged on the frame 2, the mold changing station 3 includes a mold pushing and pulling mechanism 32, a two-way transmission roller conveying mechanism 33 and a positioning roller assembly 34, the mold pushing and pulling mechanism 32 is located on one side of the roller conveying mechanism 33, and the positioning roller assembly 34 is located on the side of the mold pushing and pulling mechanism 32 away from the roller conveying mechanism 33.

[0028] like Figure 3 As shown, the roller conveying mechanism 33 includes a first sprocket chain driving mechanism 331 and several rollers 332. The two ends of the several rollers 332 are respectively connected to the frame 2 for rotation. The first sprocket chain driving mechanism 331 is installed at the bottom of the frame 2. The driving end of the first sprocket chain driving mechanism 331 is connected to the several rollers 332. The first sprocket chain driving mechanism 331 is used to drive the rollers 332 to rotate in the forward direction and the reverse direction.

[0029] Specifically, the first sprocket chain drive mechanism 331 includes a first motor and a first sprocket chain transmission mechanism. Two mold changing stations 3 are mounted on the frame 2 of the mold changing cart 1. Each of the eight rollers 332 is rotatably connected to the frame 2 at both ends. The first sprocket chain transmission mechanism of the first sprocket chain drive mechanism 331 is connected to the eight rollers 332 and the drive end of the first motor, respectively. The first motor drives the first sprocket chain transmission mechanism to rotate the eight rollers 332 in both directions. A mold push-pull mechanism 32 is mounted on the side of the eight rollers 332. The second sprocket chain drive mechanism 321 of the mold push-pull mechanism 32 drives a hook assembly 323 to move horizontally along the guide rail assembly 322. A positioning roller assembly 34 is mounted on the side of the mold push-pull mechanism 32 away from the rollers 332 to position the mold and reduce sliding friction.

[0030] like Figure 6 As shown, the mold change cart 1 can accommodate molds of various sizes, taking a smaller first mold 4 and a larger, heavier second mold 5 as examples. A first injection molding machine 6 performs injection molding on the first mold 4, while a second injection molding machine 7 performs injection molding on the second mold 5. The first injection molding machine 6 and the second injection molding machine 7 are located at different sides of the mold change cart 1. The second two mold change stations 3 are the first mold change station 3 and the second mold change station 3, respectively.

[0031] Example 1: When changing the first mold 4, the new first mold 4 is first placed on the first mold changing station 3 of the mold changing cart 1, and then the mold changing cart 1 drives the second mold changing station 3 to move to the side end of the first injection molding machine 6, and the second sprocket chain driving mechanism 321 of the mold pushing and pulling mechanism 32 on the second mold changing station 3 drives the hook assembly 323 to move along the guide rail assembly 322 to pull out the first mold 4 that has been injected in the first injection molding machine 6, and at the same time, the first sprocket chain mechanism of the roller conveying mechanism 33 drives the multiple rollers 332 to rotate counterclockwise, so that one end of the first mold 4 after injection moves along the positioning roller assembly 34, and the other end of the first mold 4 is transmitted to the second mold changing station 3 along the multiple rollers 332. Then the mold changing cart 1 drives the first mold changing station 3 to move to the side end of the first injection molding machine 6, and the mold pushing and pulling mechanism 32 on the first mold changing station 3 pushes the new first mold 4 along the guide rail assembly 322 to move into the first injection molding machine 6. At the same time, the roller conveying mechanism 33 rotates clockwise and cooperates with the mold pushing and pulling mechanism 32 to transfer the new first mold 4 into the first injection molding machine 6, thereby completing the mold changing operation of the first mold 4.

[0032] Example 2: When changing the second mold 5, the new second mold 5 is first placed on the first mold changing station 3 of the mold changing cart 1. The mold changing cart 1 then drives the second mold changing station 3 to the side end of the second injection molding machine 7. The powered rollers in the second injection molding machine 7 move the second mold 5, which has completed injection molding, out to the second mold changing station 3. Simultaneously, the first sprocket chain drive mechanism 331 on the second mold changing station 3 drives the multiple rollers 332 to rotate clockwise, so that the second mold 5 moves along the multiple rollers 332 to the second mold changing station 3. Then, the mold changing cart 1 drives the first mold changing station 3 to the side end of the second injection molding machine 7. The first sprocket chain drive mechanism 331 on the first mold changing station 3 drives the multiple rollers 332 to rotate counterclockwise, transferring the new second mold 5 to the second injection molding machine 7. The powered rollers in the second injection molding machine 7 engage and transfer the second mold 5 into the second injection molding machine 7, thereby completing the mold changing operation for the second mold 5.

[0033] In the above structure, the mold push-pull mechanism 32 and the roller conveyor mechanism 33 are used to coordinate mold changes. This not only enables mold changes for different side-end injection molding machines, improving versatility, but also improves the stability of changing heavier molds, thereby increasing the mold change efficiency and service life of the mold change vehicle 1. Furthermore, two mold change stations 3 are used to perform mold change operations separately, greatly improving the mold change efficiency of the equipment.

[0034] like Figure 3 and Figure 4 As shown, in one embodiment, the mold push-pull mechanism 32 of the double-station universal mold changing vehicle includes a second sprocket chain drive mechanism 321, an adjustable length guide rail assembly 322 and a hook assembly 323. The second sprocket chain drive mechanism 321 is installed at the top of the frame 2, and the driving end of the second sprocket chain drive mechanism 321 is connected to the hook assembly 323. The hook assembly 323 is slidably matched with the guide rail assembly 322. The second sprocket chain drive mechanism 321 is used to drive the hook assembly 323 to move horizontally along the guide rail assembly 322.

[0035] Specifically, the second sprocket chain drive mechanism 321 includes a second sprocket chain transmission mechanism and a second motor. The driving end of the second motor is connected to one end of the second sprocket chain, and the other end of the second sprocket chain is connected to the hook assembly 323. The second motor is used to drive the hook assembly 323 to move horizontally along the guide rail assembly 322. This arrangement facilitates driving the hook assembly 323 to push out or pull in the mold.

[0036] like Figure 4As shown, in one embodiment, the guide rail assembly 322 of the double-station universal mold changing vehicle includes a first guide rail 100, a second guide rail assembly 101 and a third guide rail assembly 102. The first guide rail 100 is installed on the frame 2. The second guide rail assembly 101 includes a first cylinder 001 and a second guide rail 002 that move horizontally. The driving end of the first cylinder 001 is connected to the second guide rail 002. The second guide rail 002 is slidably matched with the frame 2. One end of the second guide rail 002 is connected to the first cylinder 001. The guide rail 100 is offset against each other, and the third guide rail assembly 102 includes a second cylinder 003 and a third guide rail 004 that can be moved up and down. The second cylinder 003 is installed at the bottom end of the frame 2, and the driving end of the second cylinder 003 is connected to the third guide rail 004. When the first cylinder 001 drives the second guide rail 002 to move horizontally outside the trolley, the second cylinder 003 drives the third guide rail 004 to move upward, so that the two ends of the third guide rail 004 are respectively offset against the first guide rail 100 and the second guide rail 002.

[0037] Specifically, when the mold in the injection molding machine needs to be pulled out, the first cylinder 001 drives the second guide rail 002 to move horizontally toward the injection molding machine for connection, and the second cylinder 003 drives the third guide rail 004 to move upward, so that the two ends of the third guide rail 004 abut against the first guide rail 100 and the second guide rail 002. The second sprocket chain drive mechanism 321 drives the hook assembly 323 to move along the first guide rail 100, the third guide rail 004, and the second guide rail 002 to the side end of the injection molding machine. The hook 104 of the hook assembly 323 hooks the mold, and then the second sprocket chain drive mechanism 321 drives the hook assembly 323 to move horizontally along the second guide rail 002, the third guide rail 004, and the first guide rail 100 in sequence, pulling the mold after injection to the mold changing station 3. Then, the second cylinder 003 drives the third guide rail 004 to move downward, and the first cylinder 001 drives the second guide rail 002 to retract it onto the mold changing vehicle 1. Otherwise the mould on the mould changing station 3 is pushed into the injection moulding machine, and the working principle is the same. This setting is not only convenient for being connected with the injection moulding machine, but also convenient for the hook assembly 323 to hook the mould.

[0038] like Figure 4 As shown, in one embodiment, the hook assembly 323 of the double-station universal mold changing vehicle includes a base 103, a hook 104 and two third cylinders 105, the hook 104 includes a rotating end 005 and a hook end 006, the rotating end 005 is hinged to the base 103, the two third cylinders 105 are installed on the top of the hook end 006, the driving end of the third cylinder 105 passes through the hook 104 and is connected to the base 103, and the third cylinder 105 is used to drive the hook end 006 to drive the rotating end 005 to rotate around the base 103.

[0039] Specifically, when the mold needs to be pushed or pulled, the third cylinder 105 drives the hook end 006 of the hook 104 upward, causing the rotating end 005 to rotate around the base 103. When the hook end 006 is directly above the mold's positioning hole, the third cylinder 105 is released, and the hook end 006 falls under the action of gravity and hooks the positioning hole. This arrangement facilitates the hook 104 to hook the mold's positioning hole.

[0040] like Figure 4 As shown, in one embodiment, the positioning roller assembly 34 of the double-station universal mold changing vehicle includes a fixed plate 341 and a limiting plate 342, and a plurality of rollers 343 are arranged between the fixed plate 341 and the limiting plate 342. The two ends of the rollers 343 are rotatably connected to the fixed plate 341 and the limiting plate 342, and the limiting plate 342 is provided with a plurality of blocks 344 for guiding the mold.

[0041] Specifically, the fixed plate 341 and the limiting plate 342 are symmetrically mounted on the frame 2. Four blocks 344 are provided on the limiting plate 342, and 16 rollers 343 are positioned between the fixed plate 341 and the limiting plate 342. When one end of the mold rests on the rollers 343, the blocks 344 guide the mold end, while the fixed plate 341 and the limiting plate 342 limit the mold end, preventing it from shifting sideways. When the mold is moved into or out of the mold change station 3, the rollers 343 reduce friction on the bottom of the mold end, improving movement efficiency.

[0042] like Figure 4 As shown, in one embodiment, the input end of the positioning roller assembly 34 of the double-station universal mold changing vehicle is provided with a second limiting assembly 35, and the second limiting assembly 35 includes a fifth cylinder 351 and a second limiting block 352, and the driving end of the fifth cylinder 351 is connected to the second limiting block 352.

[0043] Specifically, when the mold moves to the mold changing station 3 and one end of the mold is located on the positioning roller assembly 34, the fifth cylinder 351 drives the second limit block 352 to move upward to limit the mold on the mold changing station 3, which can effectively prevent the mold from falling during the movement of the mold changing vehicle 1.

[0044] like Figure 1 As shown, in one embodiment, a plurality of anti-slip pedals 311 are further provided on the mold changing station 3 of the double-station universal mold changing vehicle, and the bottoms of the plurality of pedals 311 are respectively connected to the frame 2 through brackets, and the plurality of pedals 311 are respectively located between adjacent rollers 332 and the upper surface of the pedals 311 is not higher than the top of the roller 332.

[0045] Specifically, the mold changing station 3 is equipped with seven pedals 311. The bottoms of the seven pedals 311 are fixedly connected to the frame 2 and are located between adjacent rollers 332. The upper surfaces of the pedals 311 are patterned. This prevents workers on the mold changing cart 1 from slipping, improving safety.

[0046] like Figure 1 and Figure 3 As shown, in one embodiment, a plurality of first limiting components 36 for limiting the mold are respectively provided at both ends of the mold changing station 3 of the double-station universal mold changing vehicle. The first limiting component 36 includes a fourth cylinder 361 and a first limiting block 362. The driving end of the fourth cylinder 361 is connected to the first limiting block 362.

[0047] Specifically, two first stopper assemblies 36 are provided at each end of the mold changing station 3. When the mold moves onto the mold changing station 3, the fourth cylinder 361 drives the first stopper 362 to stop the mold. This arrangement can effectively prevent the mold from falling during the movement of the mold changing vehicle 1.

[0048] like Figure 2 As shown, in one embodiment, the bottom of the mold changing cart 1 of the double-station universal mold changing cart is symmetrically provided with two driving wheels 11, a plurality of driven wheels 12 and a third sprocket chain driving mechanism 14, a rotating shaft 13 is provided between the two driving wheels 11, a driving end of the third sprocket chain driving mechanism 14 is connected to the rotating shaft 13, and the third sprocket chain driving mechanism 14 is used to drive the rotating shaft 13 to drive the two driving wheels 11 to rotate.

[0049] Specifically, the third sprocket chain drive mechanism 14 includes a third sprocket chain transmission mechanism and a third motor. The driving end of the third motor is connected to one end of the third sprocket chain transmission mechanism, and the other end of the third sprocket chain transmission mechanism is connected to the rotating shaft 13. The third motor drives the third sprocket chain transmission mechanism to rotate the rotating shaft 13, and the rotating shaft 13 drives the two driving wheels 11 to rotate. The rotation of the driving wheels 11 drives the six driven wheels 12 to rotate, thereby driving the mold changing vehicle 1 to move. This arrangement facilitates driving the mold changing vehicle 1 to move along the track.

[0050] like Figure 1 As shown in one embodiment, the dual-station universal mold changing cart 1 is provided with fences 15 at both ends, and a platform 16 at one end. The fences 15 prevent workers from falling during operation, improving the safety of the mold changing cart 1. The platform 16 facilitates workers' access to the mold changing cart 1 to perform related operations.

[0051] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A dual-station universal mold changing vehicle, characterized in that: The mold changing vehicle (1) includes a frame (2) and two mold changing stations (3) arranged on the frame (2), wherein the mold changing stations (3) include a mold pushing and pulling mechanism (32), a roller conveying mechanism (33) for bidirectional transmission, and a positioning roller assembly (34), wherein the mold pushing and pulling mechanism (32) is located on one side of the roller conveying mechanism (33), and the positioning roller assembly (34) is located on a side of the mold pushing and pulling mechanism (32) away from the roller conveying mechanism (33); The roller conveying mechanism (33) comprises a first sprocket chain driving mechanism (331) and a plurality of rollers (332), wherein both ends of the plurality of rollers (332) are respectively rotatably connected to the frame (2), the first sprocket chain driving mechanism (331) is mounted on the bottom of the frame (2), the driving end of the first sprocket chain driving mechanism (331) is connected to the plurality of rollers (332), and the first sprocket chain driving mechanism (331) is used to drive the rollers (332) to rotate in a forward direction and a reverse direction.

2. The dual-station universal mold changing vehicle according to claim 1, characterized in that: The mold push-pull mechanism (32) comprises a second sprocket chain driving mechanism (321), a guide rail assembly (322) with adjustable length, and a hook assembly (323). The second sprocket chain driving mechanism (321) is installed at the top of the frame (2). The driving end of the second sprocket chain driving mechanism (321) is connected to the hook assembly (323). The hook assembly (323) and the guide rail assembly (322) are slidably matched. The second sprocket chain driving mechanism (321) is used to drive the hook assembly (323) to move horizontally along the guide rail assembly (322).

3. The dual-station universal mold changing vehicle according to claim 2, characterized in that: The guide rail assembly (322) includes a first guide rail (100), a second guide rail assembly (101) and a third guide rail assembly (102), wherein the first guide rail (100) is mounted on the frame (2), and the second guide rail assembly (101) includes a first cylinder (001) and a second guide rail (002) that move horizontally, wherein the driving end of the first cylinder (001) is connected to the second guide rail (002), the second guide rail (002) is slidably matched with the frame (2), and one end of the second guide rail (002) is against the first guide rail (100). The third guide rail assembly (102) comprises a second cylinder (003) and a third guide rail (004) that can be lifted and lowered. The second cylinder (003) is installed at the bottom end of the frame (2). The driving end of the second cylinder (003) is connected to the third guide rail (004). When the first cylinder (001) drives the second guide rail (002) to move horizontally outside the trolley, the second cylinder (003) drives the third guide rail (004) to move upward, so that the two ends of the third guide rail (004) respectively abut against the first guide rail (100) and the second guide rail (002).

4. The dual-station universal mold changing vehicle according to claim 2, characterized in that: The hook assembly (323) includes a base (103), a hook (104) and two third cylinders (105). The hook (104) includes a rotating end (005) and a hook end (006). The rotating end (005) is hinged to the base (103). The two third cylinders (105) are installed on the top of the hook end (006). The driving end of the third cylinder (105) passes through the hook (104) and is connected to the base (103). The third cylinder (105) is used to drive the hook end (006) to drive the rotating end (005) to rotate around the base (103).

5. The dual-station universal mold changing vehicle according to claim 1, characterized in that: The positioning roller assembly (34) includes a fixed plate (341) and a limiting plate (342), a plurality of rollers (343) are arranged between the fixed plate (341) and the limiting plate (342), and the two ends of the rollers (343) are rotatably connected to the fixed plate (341) and the limiting plate (342), and a plurality of stoppers (344) for guiding the mold are arranged on the limiting plate (342).

6. The dual-station universal mold changing vehicle according to claim 1, characterized in that: The input end of the positioning roller assembly (34) is provided with a second limiting assembly (35), the second limiting assembly (35) comprises a fifth cylinder (351) and a second limiting block (352), and the driving end of the fifth cylinder (351) is connected to the second limiting block (352).

7. The dual-station universal mold changing vehicle according to claim 1, characterized in that: The mold changing station (3) is further provided with a plurality of anti-slip pedals (311), the bottoms of the plurality of pedals (311) are respectively connected to the frame (2) via brackets, the plurality of pedals (311) are respectively located between adjacent rollers (332), and the upper surfaces of the pedals (311) are not higher than the tops of the rollers (332).

8. The dual-station universal mold changing vehicle according to claim 1, characterized in that: A plurality of first limiting assemblies (36) for limiting the position of the mold are respectively provided at both ends of the mold changing station (3). The first limiting assemblies (36) include a fourth cylinder (361) and a first limiting block (362). The driving end of the fourth cylinder (361) is connected to the first limiting block (362).

9. The dual-station universal mold changing vehicle according to claim 1, characterized in that: The bottom of the mold changing vehicle (1) is symmetrically provided with two driving wheels (11), a plurality of driven wheels (12) and a third sprocket chain driving mechanism (14). A rotating shaft (13) is provided between the two driving wheels (11). The driving end of the third sprocket chain driving mechanism (14) is connected to the rotating shaft (13). The third sprocket chain driving mechanism (14) is used to drive the rotating shaft (13) to drive the two driving wheels (11) to rotate.

10. The dual-station universal mold changing vehicle according to claim 1, characterized in that: Fences (15) are provided at both ends of the mold changing vehicle (1), and a step (16) is provided at one end of the mold changing vehicle (1).

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