Mold core quick change trolley

Abstract

The application discloses a mold core quick-changing trolley, which comprises a trolley body, a base, a placing table, a clamping seat, a first moving device and a second moving device, the base is installed above the trolley body through a lifting device, the placing table is slidingly arranged on the base, the clamping seat is slidingly arranged on the placing table, the first moving device is installed on the base and is connected with the placing table in a matched mode, and the second moving device is installed on the base and the placing table and is connected with the clamping seat in a matched mode. The application has the beneficial effects that the clamping seat can be adjusted in three directions through the lifting device, the first moving device and the second moving device, the clamping seat can be accurately positioned at a dismounting position of a mold core, the clamping seat can automatically clamp and release the mold core, the labor input during mold core dismounting is greatly reduced, and the mold changing efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of die-casting machine die changing equipment, in particular to a die core quick-changing trolley. BACKGROUND

[0002] With the development of industry and the progress of technology, more and more products need to adopt large and complex integrated die-castings to reduce weight. A die-casting die is a key part in the die-casting process, determines the shape and size of the die-casting, and its performance directly affects the quality and production efficiency of the die-casting.

[0003] In the production process of the die-casting machine for different products, the die core in the die needs to be replaced, so the die core replacement operation needs to be completed by cooperating with a die changing trolley. The traditional die changing trolley still mainly needs to be manually matched when replacing the die core, which is time-consuming and laborious, and the die changing efficiency is low. Therefore, how to improve the existing die changing trolley to overcome the above problems is a problem to be solved by the person skilled in the art. SUMMARY

[0004] One of the purposes of the application is to provide a die core quick-changing trolley capable of improving die changing efficiency.

[0005] To achieve the above purposes, the technical scheme adopted by the application is as follows: a die core quick-changing trolley, comprising a trolley body, a base, a placing table, a clamping seat, a first moving device and a second moving device, the base is installed above the trolley body through a lifting device, the placing table is slidingly arranged on the base, the clamping seat is slidingly arranged on the placing table, the first moving device is installed on the base and connected with the placing table in cooperation, the second moving device is installed on the base and the placing table and connected with the clamping seat in cooperation; the clamping seat is suitable for locking and unlocking the die core to be disassembled and assembled, the first moving device is suitable for adjusting the die core in a first direction, the second moving device is suitable for adjusting the die core in a second direction, and the lifting device is suitable for adjusting the die core in a third direction, thereby completing the disassembly and assembly of the die core.

[0006] Preferably, the base comprises a seat body and a seat table, the seat body is installed on the lifting device, and the seat table is arranged at the middle part of the top end of the seat body through a rotating device and cooperates with the seat body through a guide structure; when not in use, the rotating device is suitable for driving the seat table to rotate and being accommodated at the upper end of the seat body through the guide structure, at this time, the projection of the seat table in the third direction is completely coincided with the projection of the seat body in the third direction.

[0007] Preferably, the rotating device comprises a rotating table and a driving device, the rotating table is rotatably installed in the middle of the top end of the seat table, the driving device is installed at the bottom end of the seat table and the output end is connected with the rotating table, and the seat table is slidably arranged on the rotating table; the guiding structure comprises a guiding groove and a guiding roller, the guiding groove is arranged at the top end of the seat body, and the guiding roller is installed at the bottom side of the first end of the seat table; when not in use, the driving device is suitable for driving the rotating table to rotate, and then the rotating seat table is suitable for moving along the rotating table under the cooperation of the guiding roller and the guiding groove to pull the seat table to move synchronously, and the seat table is finally accommodated on the upper end of the seat body.

[0008] Preferably, the moving device two comprises a driving component two, a rotating rod and a transmission assembly, the rotating rod is rotatably installed on the seat table and parallel to the first direction, the driving component two is installed on the seat table and the output end is connected with the rotating rod, and the transmission assembly is arranged on the placing table and the input end is connected with the rotating rod through a spline, and the output end of the transmission assembly is connected with the clamping seat.

[0009] Preferably, the transmission assembly comprises a pair of pulleys and a synchronous belt, the pulleys are symmetrically rotatably installed in the placing table, the synchronous belt is sleeved and matched with the pulleys, and the clamping seat is connected with the synchronous belt, and one of the pulleys is spline-connected with the rotating rod.

[0010] Preferably, the moving device one comprises a driving component one and a lead screw, the lead screw is rotatably installed on the seat table and matched with the placing table, and the driving component one is installed on the seat table and the output end is connected with the lead screw; the driving component one and the driving component two are both located at the first end of the seat table and symmetrically distributed.

[0011] Preferably, the clamping seat comprises a sliding seat and an inner supporting assembly, the inner supporting assembly is detachably installed on the sliding seat; the inner supporting assembly is suitable for abutting and matching with the inside of the mold core, so as to realize the locking of the mold core.

[0012] Preferably, the inner supporting assembly comprises a main pipe and a plurality of clamping heads, the main pipe is installed on the sliding seat and has a plurality of branch pipe heads, and the clamping heads are sealingly and slidably arranged in the branch pipe heads; when the mold core is locked, the main pipe is suitable for being connected with a pressure medium to drive the clamping heads to move until abutting against the inside of the mold core.

[0013] Preferably, the driving device comprises a driving motor, a worm gear, a worm and a driving shaft, the driving shaft is installed at the bottom end of the rotating table, the worm gear is sleeved and installed outside the driving shaft, the driving motor is installed at the bottom end of the seat body and the output end is connected with the worm, and the worm gear is engaged with the worm.

[0014] Preferably, the rotating angle of the seat table along the seat body is a, wherein 0 ≦ a ≦ 90°.

[0015] Compared with the prior art, the application has the beneficial effects that:

[0016] (1) The lifting device, the first moving device and the second moving device can adjust the clamping seat in three directions, so that the clamping seat can be accurately positioned at the disassembly position of the mold core, and the clamping seat can automatically clamp and release the mold core, greatly reducing the labor input during disassembly of the mold core and significantly improving the mold changing efficiency.

[0017] (2) The rotating device and the guide structure are provided, when the mold changing trolley is not used, the rotating device can drive the seat table to rotate and then be stored at the upper end position of the seat body through the guide structure, thereby reducing the storage space of the device.

[0018] (3) The part of the second moving device is installed on the seat table, which greatly reduces the space occupation and overall weight of the placing table, and the synchronous belt structure itself is light in weight, further reducing the load pressure on the placing table, thereby greatly improving the stability of the whole device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the mold changing trolley of the application when working.

[0020] Figure 2 It is a schematic view of the overall structure of the mold changing trolley of the application.

[0021] Figure 3 It is a specific schematic view of the rotating device and the guide structure of the application.

[0022] Figure 4 It is a schematic view of the mold changing trolley of the application when being stored.

[0023] Figure 5 It is a specific structure schematic view of the first moving device and the second moving device of the application.

[0024] Figure 6 It is a specific structure schematic view of the placing table of the application.

[0025] Figure 7The schematic view of the specific structure of the clamp base of the present application.

[0026] Figure 8 The schematic view of the specific structure of the transmission assembly of the present application.

[0027] Figure 9 The schematic view of the structure when the transmission assembly of the present application cooperates with the lead screw and the rotating rod.

[0028] In the figure: 1, middle plate; 2, mold frame; 3, head plate; 4, column; 5, trolley body; 6, base; 601, seat body; 602, seat table; 7, lifting device; 8, mold core; 9, clamp base; 901, sliding seat; 902, inner support assembly; 9021, main pipe; 9022, clamp head; 10, rotating device; 1001, rotating table; 1002, driving device; 11, placing table; 12, moving device one; 1201, driving component one; 1202, lead screw; 13, moving device two; 1301, driving component two; 1302, rotating rod; 1303, transmission assembly; 13031, pulley; 13032, synchronous belt; 14, guiding structure; 1401, guiding roller; 1402, guiding groove; 15, visual inspection module. DETAILED DESCRIPTION

[0029] Hereinafter, the present application will be further described in conjunction with specific embodiments. It should be noted that, under the premise of no conflict, each embodiment described below or each technical feature can be combined with any other embodiment or technical feature to form a new embodiment.

[0030] In the description of the present application, it should be noted that, for orientation words, such as terms “center”, “transverse”, “longitudinal”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0031] It should be noted that the terms “first”, “second” and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0032] One of the preferred embodiments of the present application is as follows: Figures 1 to 9As shown, a mold core quick-change trolley includes a trolley body 5, a base 6, a placement table 11, a clamping seat 9, a moving device one 12, and a moving device two 13. The base 6 is installed above the trolley body 5 through a lifting device 7. The placement table 11 is slidingly arranged on the base 6. The clamping seat 9 is slidingly arranged on the placement table 11. The moving device one 12 is installed on the base 6 and is connected with the placement table 11. The moving device two 13 is installed on the base 6 and the placement table 11 and is connected with the clamping seat 9.

[0033] It can be understood that when installing the mold core 8, the mold core 8 can be first limited and locked by the clamping seat 9, then adjusted in the first direction by the moving device one 12, adjusted in the second direction by the moving device two 13, and adjusted in the third direction by the lifting device 7, so that the mold core 8 to be installed is matched with the corresponding mold frame 2. Finally, the locking oil cylinder in the mold frame 2 can lock the mold core 8 to complete the installation. Conversely, when disassembling the mold core 8, the mold core 8 in the mold frame 2 is first limited and locked by the clamping seat 9, and then adjusted in multiple directions to take out the mold core 8 to complete the disassembly.

[0034] It should be noted that, as shown in the Figure 1 first direction is the front-back direction, the second direction is the left-right direction, and the third direction is the up-down direction (vertical direction), so that the mold core 8 can be accurately positioned in the installation space of the die-casting machine through the mutual cooperation of the three directions.

[0035] In one embodiment of the present application, as shown in the Figures 2 to 4 the base 6 includes a seat body 601 and a seat table 602. The seat body 601 is installed on the lifting device 7. The seat table 602 is arranged at the top middle part of the seat body 601 through a rotating device 10 and is connected with the seat body 601 through a guide structure 14.

[0036] It can be understood that when the mold changing trolley is not in use, the rotating device 10 can drive the seat table 602 to rotate and be accommodated in the upper end position of the seat body 601 through the guide structure 14. At this time, the projection of the seat table 602 in the vertical direction completely coincides with the projection of the seat body 601 in the vertical direction.

[0037] As a further description of the above embodiment: the rotating device 10 includes a rotating table 1001 and a driving device 1002. The rotating table 1001 is rotatably installed at the top middle part of the seat table 602. The driving device 1002 is installed at the bottom end of the seat table 602 and is connected with the rotating table 1001 at the output end. The seat table 602 is slidingly arranged on the rotating table 1001. The guide structure 14 includes a guide groove 1402 and a guide roller 1401. The guide groove 1402 is arranged at the top end of the seat body 601. The guide roller 1401 is installed at the bottom side of the first end of the seat table 602.

[0038] In order to facilitate the understanding of the process of folding and unfolding the seat 602, the working principle thereof is described as follows:

[0039] As shown in Figure 1 and Figure 2 , in the working state, the seat 602 is perpendicular to the seat body 601, and the first end of the seat 602 is located at the central position of the seat body 601, so that the entire die changing trolley is more balanced in force when working. When the die changing trolley is not in use, i.e., the driving device 1002 drives the rotating table 1001 to rotate, the guide roller 1401 at the first end of the seat 602 will roll along the guide groove 1402, and then the seat 602 will move synchronously along the rotating table 1001 under the traction of the guide roller 1401. When the seat 602 is rotated to be parallel to the seat body 601 (the included angle between the two is 0°), as shown in Figure 4 , the second end (left end) of the seat 602 corresponds to the left end of the seat body 601, and the first end (right end) of the seat 602 corresponds to the right end of the seat body 601. At this time, the projection of the seat 602 in the vertical direction completely coincides with the projection of the seat body 601 in the vertical direction, so that the seat 602 can be better stored when not in use, reducing the occupied space when the die changing trolley is stored. It should be noted that the seat 602 can rotate at an angle of ɑ with respect to the seat body 601, where 0≦ɑ≦90°; that is, when the angle between the seat 602 and the seat body 601 is 0°, the seat 602 is in the storage state; and when the angle between the seat 602 and the seat body 601 is 90°, the seat 602 is in the working state.

[0040] In one embodiment of the present application, as shown in Figure 5 , the moving device two 13 includes a driving component two 1301, a rotating rod 1302, and a transmission assembly 1303. The rotating rod 1302 is rotationally installed on the seat 602 and parallel to the front-back direction (i.e., the length direction of the seat 602). The driving component two 1301 is installed on the seat 602 and the output end thereof is connected with the rotating rod 1302. The transmission assembly 1303 is arranged on the placement table 11 and the input end thereof is connected with the rotating rod 1302 through a spline connection. The output end of the transmission assembly 1303 is connected with the clamping seat 9.

[0041] It can be understood that when the left-right direction adjustment of the placing table 11 is performed, the driving component two 1301 drives the rotating rod 1302 to rotate, the rotating rod 1302 acts on the transmission assembly 1303, and the transmission assembly 1303 can make the clamping seat 9 slide and adjust in the left-right direction. It should be noted that since the placing table 11 can be adjusted in the front-back direction along the seat table 602, and the driving component two 1301 and the rotating rod 1302 are both installed on the seat table 602, the connection of the transmission assembly 1303 and the spline ensures the transmission of power. In addition, when the mold core 8 is disassembled, the first end of the seat table 602 is located at the trolley body 5, the second end of the seat table 602 needs to be inserted into the interior of the die casting machine, and the placing table 11 needs to be moved and adjusted to the second end of the seat table 602 to realize the installation of the mold core 8. Therefore, the driving component two 1301 is installed at the first end of the seat table 602, and the driving rotating rod 1302 is installed “uniformly” at the seat table 602, which can greatly reduce the burden on the second end of the seat table 602, and further improve the stability of the whole mold changing trolley.

[0042] The specific structure of the transmission assembly 1303 is not limited in the present application, and the following provides a specific embodiment for reference:

[0043] As shown in Figure 8 and Figure 9 , the transmission assembly 1303 includes a pair of pulleys 13031 and a synchronous belt 13032, the pulleys 13031 are symmetrically and rotatably installed in the placing table 11, the synchronous belt 13032 is sleeved and matched with the pulleys 13031, the clamping seat 9 is connected with the synchronous belt 13032, and one of the pulleys 13031 is connected with the spline of the rotating rod 1302. It can be understood that when the left-right adjustment is performed, the driving component two 1301 drives one of the pulleys 13031 to rotate through the rotating rod 1302, so that the synchronous belt 13032 moves, and the synchronous belt 13032 can drive the clamping seat 9 to move, and the forward and reverse rotation of the driving component two 1301 can realize the left-right adjustment of the clamping seat 9. Of course, the transmission assembly 1303 can also use a chain wheel and chain structure.

[0044] It should be noted that in the prior art, to achieve the left and right adjustment of the clamp seat 9 on the placement table 11, the general design is to use a screw block mechanism or an extension piece (such as a hydraulic rod or a pneumatic rod). For example, when a screw block structure is used, the motor for driving is installed at the side of the placement table 11, that is, the motor extends out of the placement table 11. This increases the space area of the placement table 11 and also increases the weight of the placement table 11. When an extension piece is used, if the fixed cylinder part of the hydraulic cylinder is installed in the placement table 11, the left and right adjustment range of the clamp seat 9 will be reduced. If the fixed cylinder part is installed outside the placement table 11, the space area of the placement table 11 will be increased. That is, the existing design increases the volume or weight of the placement table 11, which is not conducive to lightweight and compact design. In the present design, the driving part and the rotating rod 1302 are installed on the seat 602, which greatly reduces the space occupation and overall weight of the placement table 11. The synchronous belt 13032 transmission can ensure a larger adjustment range of the clamp seat 9, and the synchronous belt 13032 structure itself is lighter, further reducing the load pressure on the placement table 11, thereby greatly improving the overall stability of the device.

[0045] In one embodiment of the present application, as shown in Figure 5 The mobile device 12 includes a driving part 1201 and a screw rod 1202. The screw rod 1202 is rotatably installed on the seat 602 and cooperates with the placement table 11. The driving part 1201 is installed on the seat 602 and the output end is connected with the screw rod 1202. It can be understood that the driving part 1201 drives the screw rod 1202 to rotate, and the screw rod 1202 acts on the placement table 11, thereby achieving the forward and backward movement adjustment of the placement table 11.

[0046] Further preferably, as shown in Figure 2 The installation positions of the driving part 1201 and the driving part 1301 are both located at the first end position of the seat 602 and are symmetrically distributed. Of course, the screw rod 1202 and the rotating rod 1302 are also symmetrically installed, and the screw rod 1202 penetrates the other pulley 13031. As known from the above, when the mold core 8 is disassembled, the placement table 11 needs to be moved and adjusted to the second end of the seat 602, which will increase the weight at the second end. At this time, the driving part 1201 and the driving part 1301 can increase the weight at the first end of the seat 602, thereby reducing the inclination or deformation of the seat 602 due to excessive weight at the second end, and further improving the structural stability and operation reliability of the mold changing trolley during the disassembly process of the mold core 8.

[0047] It should be noted that the driving part 1201 and the driving part 1301 are public common knowledge known to those skilled in the art, such as motors, rotary air cylinders or rotary hydraulic cylinders, etc.

[0048] As shown in Figure 3 The driving device 1002 comprises a driving motor, a worm gear, a worm and a driving shaft. The driving shaft is installed at the bottom end of the rotating table 1001. The worm gear is sleeved and installed outside the driving shaft. The driving motor is installed at the bottom end of the seat body 601 and the output end is connected with the worm. The worm gear is engaged with the worm. It should be known that the worm gear is used to drive the rotating table 1001 to rotate. The worm gear transmission has self-locking characteristics, thereby improving the stability of the rotating table 1001.

[0049] Further preferably, as shown in Figure 2 The driving motor is located at the front upper side of the trolley body 5. Of course, the driving component 1201 and the driving component 1301 are also located at the front upper side of the trolley body 5 when in use. The placing table 11 and other components for transporting the mold core 8 are located at the rear upper side of the trolley body 5. This layout design makes the driving components at the rear and the load components at the front balanced in gravity distribution, thereby further improving the stability of the device during operation.

[0050] As shown in Figure 7 The clamping seat 9 comprises a sliding seat 901 and an inner supporting assembly 902. The inner supporting assembly 902 is detachably installed at the side of the sliding seat 901. It can be understood that the inner supporting assembly 902 can be matched to the inside of the mold core 8 when locking the mold core 8, thereby achieving the limiting and fixing of the mold core 8.

[0051] As a further description of the above embodiment, the inner supporting assembly 902 comprises a main pipe 9021 and a plurality of clamping heads 9022. The main pipe 9021 is installed at the sliding seat 901 and has a plurality of branch pipe heads. The clamping heads 9022 are sealingly and slidingly arranged in the branch pipe heads. It can be understood that when locking the mold core 8, pressure medium (such as hydraulic oil or compressed air) can be introduced into the main pipe 9021. The clamping heads 9022 will move under the action of the pressure medium and abut against the inside of the mold core 8, thereby achieving the uniform inner supporting and locking of the mold core 8.

[0052] It should be noted that the number and size of the chucks 9022 can be adjusted according to the internal structure of the mold core 8. An elastic buffer layer (such as a polyurethane pad) can be provided at the end of the chucks 9022 to increase friction with the inner wall of the mold core 8, improving locking stability, and preventing damage to the mold core 8 from hard contact. In this internal support locking method, the movement distance of each chuck 9022 is adaptively adjusted; it automatically stops when it abuts against the inner wall of the mold core 8. Conversely, during unlocking, simply removing the pressure medium allows the chucks 9022 to move away from the mold core 8 and release. This internal support structure is suitable for concave mold cores 8. Similarly, for convex mold cores 8, multiple chucks 9022 can be used in an external clamping design, where multiple chucks 9022 move and abut against the outer side of the mold core 8 under the action of the pressure medium.

[0053] Further optimization, such as Figure 6 As shown, multiple vision inspection modules 15 can be installed on the placement platform 11. When installing the mold core 8, they can capture the positional state between the mold core 8 and the mold frame 2, and then use the control system to perform precise displacement compensation adjustment on the lifting device 7, the first moving device 12 and the second moving device 13 to ensure that the installation reference of the mold core 8 and the mold frame 2 are completely aligned, thereby improving the installation accuracy.

[0054] Specifically, such as Figure 3 As shown, the lifting device 7 preferably uses a hydraulic cylinder. Both the trolley body 5 and the base 602 have rectangular structures. The base 602 is installed above the trolley body 5 via a guide telescopic rod. A pair of hydraulic cylinders are symmetrically installed between the two. Rollers and a locking mechanism are provided at the bottom of the trolley body 5. The rollers are used to move the entire mold-changing trolley, while the locking mechanism can fix the trolley in a designated position during mold-changing operations, preventing displacement that could affect the installation accuracy of the mold core 8. The locking mechanism and the vision inspection module 15 are well-known technologies to those skilled in the art, and therefore will not be described in detail.

[0055] The working principle of this invention is as follows:

[0056] ① In the initial state, that is, the mold-changing trolley is in the retracted state, such as Figure 4 As shown, at this time, the platform 602 is completely positioned on the body 601 (the angle between them is 0°). ② Start the drive device 1002, causing the rotary table 1001 to rotate clockwise. The guide roller 1401 at the first end of the platform 602 will roll along the guide groove 1402, and under the traction of the guide roller 1401, the platform 602 will move synchronously along the rotary table 1001 until the platform 602 is perpendicular to the body 601. ③ As shown Figure 1As shown, the middle plate 1 on the die casting machine is moved and away from the head plate 3, that is, the two mold frames 2 are separated to the appropriate mold opening position, and the two corinthian columns 4 at the top and bottom of the front of the die casting machine are extracted; then the worker moves the mold changing trolley, so that the seat 602 extends into the two mold frames 2, and the mold changing trolley is abutted against the side of the die casting machine and is stable, at this time the seat 602 is in parallel with the mold frame 2. Figure 1 As shown, the moving device 12 is started, and then the placing table 11 drives the clamp seat 9 to move forward to the inside position of the die casting machine, and then the clamp seat 9 is adjusted up, down, left, right, forward and backward into the mold core 8 to be disassembled through the action of the visual detection module 15 and the moving device 12, the moving device 13 and the lifting device 7.⑤The clamp seat 9 locks the mold core 8, and then the locking oil cylinder in the mold frame 2 releases the mold core 8, and then the two moving devices move and transport the disassembled mold core 8 to the outside of the die casting machine, at this time the worker takes off the mold core 8 on the clamp seat 9 and places the "new" mold core 8 to be installed, and similarly moves and adjusts the mold core 8 into the mold frame 2, and the locking oil cylinder in the mold frame 2 locks the "new" mold core 8, thereby completing the automatic disassembly and installation process of the mold core 8.

[0057] The above describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A quick-change trolley for mold cores, characterized in that, include: The vehicle itself; The base is mounted above the trolley body via a lifting device; A placement platform, which is slidably disposed on the base; A clamp, which is slidably disposed on the placement platform; A mobile device 1 is mounted on the base and connected to the placement platform. as well as The second mobile device is installed on the base and the placement platform and is connected to the clamp. The clamp is adapted to lock and unlock the mold core to be disassembled and assembled. The first mobile device is adapted to adjust the mold core in a first direction. The second mobile device is adapted to adjust the mold core in a second direction. The lifting device is adapted to adjust the mold core in a third direction, thereby completing the disassembly and assembly operation of the mold core. The base includes a base body and a platform. The base body is installed on the lifting device. The platform is located at the top center of the base body via a rotating device and cooperates with the base body via a guide structure. When not in use, the rotating device is adapted to drive the platform to rotate and store it at the top of the base body via the guide structure. At this time, the projection of the platform in a third direction completely coincides with the projection of the base body in a third direction. The rotating device includes a rotating platform and a driving device. The rotating platform is rotatably mounted on the top center of the base, and the driving device is mounted on the bottom of the base with its output end connected to the rotating platform. The base is slidably disposed on the rotating platform. The guiding structure includes a guide groove and a guide roller. The guide groove is disposed on the top of the base, and the guide roller is mounted on the bottom side of the first end of the base. When not in use, the driving device is adapted to drive the rotating platform to rotate, and the rotating base is adapted to move synchronously along the rotating platform under the cooperation of the guide roller and the guide groove, until the base is housed on the upper end of the base. The second mobile device includes a second driving component, a rotating rod, and a transmission assembly. The rotating rod is rotatably mounted on the base and parallel to the first direction. The second driving component is mounted on the base and its output end is connected to the rotating rod. The transmission assembly is disposed on the placement platform and its input end is connected to the rotating rod via a spline. The output end of the transmission assembly is connected to the clamp. The transmission assembly includes a pair of pulleys and a timing belt. The pulleys are symmetrically and rotatably mounted in the placement platform. The timing belt is sleeved and fitted onto the pulleys. The clamp is connected to the timing belt. One of the pulleys is connected to the spline of the rotating rod. The first moving device includes a first driving component and a lead screw. The lead screw is rotatably mounted on the base and cooperates with the placement platform. The first driving component is mounted on the base and its output end is connected to the lead screw. The first driving component and the second driving component are both located at the first end of the base and are symmetrically distributed.

2. The quick-change trolley for mold cores as described in claim 1, characterized in that: The clamp includes a slide and an inner support assembly, the inner support assembly being detachably installed on the slide; the inner support assembly is adapted to abut against the inside of the mold core, thereby locking the mold core.

3. The quick-change trolley for mold cores as described in claim 2, characterized in that: The inner support assembly includes a main pipe and multiple clamps. The main pipe is mounted on the slide and has multiple branch pipe heads. The clamps are slidably disposed within the branch pipe heads. When locking the mold core, the main pipe is adapted to be supplied with a pressure medium to drive the clamps to move until they abut against the interior of the mold core.

4. The quick-change trolley for mold cores as described in claim 3, characterized in that: The driving device includes a drive motor, a worm gear, a worm, and a drive shaft. The drive shaft is mounted on the bottom of the rotary table, the worm gear is sleeved on the outside of the drive shaft, the drive motor is mounted on the bottom of the base and its output end is connected to the worm, and the worm gear meshes with the worm. In use, the drive motor, the first drive component, and the second drive component are all located on the same side of the trolley body.

5. The quick-change trolley for mold cores as described in any one of claims 1-4, characterized in that: The rotation angle of the platform along the seat body is α, where 0 ≦ α ≦ 90°.

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