Foaming mold-changing primary-secondary trolley

Abstract

The utility model discloses a foaming mould-changing primary-secondary trolley which comprises a primary trolley, a secondary trolley, a driving mechanism and a plurality of groups of jacking components, the jacking assemblies are arranged at the bottom of the mother trolley at intervals. A rolling body used for bearing a mold is arranged at the top of the sub-trolley, the sub-trolley is arranged above the main trolley, and the sub-trolley is installed on the main trolley in a sliding mode; the driving mechanism comprises a driving part and a speed reduction transmission assembly, the driving part is installed on the mother trolley, the two ends of the speed reduction transmission assembly are connected with the driving part and the child trolley respectively, and the driving mechanism is used for driving the child trolley to move relative to the mother trolley. The foaming mold-changing primary-secondary trolley has the advantages that the mold-changing operation is simple and convenient, the safety is good, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mold changing, and particularly to a foaming mold changing sub-mother trolley. Background Art

[0002] Overview of foaming mold changing process: According to the production instructions, if the product varieties taken from the later process are different, the mold weighing 1.5 tons needs to be docked with the mold changing platform through the mold changing trolley in a limited and confined space. After ensuring that the concave positioning and fixing groove of the mold is accurately docked with the bull's eye pulley, the mold is manually pulled back and forth between the bull's eye pulley and the roller by a special chain.

[0003] The existing multiple foaming machines have different mold changing platforms from the ground due to ground subsidence and other reasons. The heights are between 625mm and 645mm, and there is a height difference. Since the mold itself is heavy, when the mold is replaced and docked, if the gap between the mold changing platform and the mold changing trolley exceeds 1mm, the mold changing operation will be very laborious and dangerous. Therefore, a mold changing trolley with a special height needs to be made for each machine, and the manufacturing cost of the trolley is high. The increase in production capacity will also lead to an increase in the number of foaming machines and the need for a dedicated mold changing trolley. After that, a manual forklift is needed to lift the mold changing trolley to the height of the mold changing platform for docking. When the ground is uneven, it is impossible to ensure the flatness of the mold changing platform surface and the load-bearing surface of the mold changing trolley, and there is a gap. The mold used for exchange weighs 1.5 tons. When the gap between the two load-bearing planes exceeds 0.5mm, the operation becomes difficult and laborious, and during the movement of the mold, it is necessary to hold the forklift handle firmly to prevent the forklift from moving backwards during the mold change process, causing the mold to tip over.

[0004] In addition, the mold changing operation needs to be completed in a very limited space. The connection between the mold changing trolley and the mold changing platform must be ensured to align the concave fixed positioning groove of the mold with the bull's eye pulley of the mold changing platform in the left and right width directions. Due to the mold fixation requirements, the gap between the grooves and the pulleys on the left and right sides is designed not to exceed 2mm. When the mold is moved from the mold changing trolley to the mold changing platform, the operator's line of sight is blocked and cannot be seen at all because of the mold placed on the mold changing trolley. When there is a deviation, the operator needs to swing the 1.5-ton mold left and right multiple times using the handlebars of the manual forklift. The docking process is very time-consuming and labor-intensive.

[0005] In view of this, it is necessary to provide a new foaming mold changing trolley to solve or at least alleviate the above-mentioned technical defects. Utility Model Content

[0006] The main purpose of the utility model is to provide a foaming mold changing trolley, aiming to solve the technical problems of mold changing operation being time-consuming, labor-intensive, high-cost and poor in safety in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a foaming mold changing trolley, comprising:

[0008] Mother trolley;

[0009] A plurality of lifting assemblies are arranged at intervals at the bottom of the mother trolley;

[0010] A sub-trolley, the top of which is provided with a rolling body for supporting the mold, the sub-trolley is arranged above the mother trolley, and the sub-trolley is slidably mounted on the mother trolley;

[0011] The driving mechanism includes a driving part and a reduction transmission assembly. The driving part is installed on the mother trolley. The two ends of the reduction transmission assembly are respectively connected to the driving part and the sub-trolley. The driving mechanism is used to drive the sub-trolley to move relative to the mother trolley.

[0012] In one embodiment, the mother trolley is provided with a steel rail, and the bottom of the sub-trolley is provided with a rotatable guide wheel, the guide wheel is rollingly connected to the steel rail, and the driving mechanism is used to drive the sub-trolley to move along the length direction of the steel rail.

[0013] In one embodiment, the driving part is a hand-cranked wheel, and the hand-cranked wheel is rotatably mounted on the mother trolley.

[0014] In one embodiment, the reduction transmission assembly includes a first transmission rod, a reduction box and a second transmission rod, wherein both ends of the first transmission rod are respectively connected to the hand wheel and the reduction box, and the second transmission rod is respectively connected to the reduction box and the sub-trolley.

[0015] In one embodiment, a transmission connection portion is provided at the bottom of the sub-trolley, the transmission connection portion is provided with a threaded hole, and the second transmission rod passes through the threaded hole and is threadedly connected to the transmission connection portion.

[0016] In one embodiment, the sub-trolley is formed with a crossbeam, the mother trolley is formed with a limiting portion, the limiting portion is provided with a limiting groove, the crossbeam passes through the limiting groove, and the length direction of the crossbeam is the same as the moving direction of the sub-trolley.

[0017] In one embodiment, a latch hole is provided on the crossbeam, and the foaming mold changing sub-trolley also includes a positioning latch installed in the latch hole, and the positioning latch is used to abut against the limiting portion to limit the moving stroke of the sub-trolley.

[0018] In one embodiment, the foaming mold changing trolley also includes a movable baffle and two groups of side fixed baffles, the two groups of side fixed baffles are relatively arranged on both sides of the mother trolley, and the movable baffle can be lifted and lowered on one end of the sub-trolley.

[0019] In one embodiment, the jacking assembly is a scissor jack, and the number of the jacking assemblies is four groups, and the four groups of the jacking assemblies are respectively arranged at the four corners of the bottom of the mother trolley.

[0020] In one embodiment, a plurality of groups of rollers and a plurality of groups of locking members are further provided at the bottom of the mother trolley, and the locking members are provided in a one-to-one correspondence with the rollers, and the locking members are used to abut against the rollers to limit the rotation of the rollers.

[0021] In the technical solution of the utility model, the bottom of the mother trolley can be provided with rollers for movement, or the mother trolley can be moved by a forklift. After the mother trolley is moved into place, in order to make the mold supported on the sub-trolley dock with the mold changing platform of the foaming machine, it is necessary to adjust the horizontal height of the bottom of the mold to be consistent with the mold changing platform. At this time, by adjusting each jacking component separately, the jacking component is supported between the ground and the mother trolley, so that the height and inclination of the mother trolley can be adjusted. When the ground is uneven or the mold changing platform is subsided, the supporting surface on the sub-platform and the mold changing platform can be in the same plane, thereby avoiding the safety and operation difficulties caused by the break. Because its height is adjustable, it can be used for mold changing operations of multiple foaming machines, thereby reducing the cost of preparing multiple dedicated mold changing trolleys.

[0022] Secondly, when a manual forklift is used to dock the mold changing trolley with the mold changing platform, the deviation between the mold groove and the bull horn pulley is basically within 20 mm. Before the improvement, the mold was adjusted by continuously swinging the forklift handle left and right until it was aligned, and the alignment process was time-consuming and laborious; the utility model adopts a parent-child trolley structure and sets a driving mechanism so that the child trolley can be moved on the fixed mother trolley to adjust the docking position of the mold, thereby correcting the deviation, effectively reducing the difficulty of precise docking of mold changes, making the operation simpler and more convenient. At the same time, the setting of the reduction transmission assembly can also reduce the output torque of the drive unit, thereby saving labor.

[0023] In summary, the mother-child trolley can be effectively adjusted in height and width, thereby designing a universal mold-changing trolley, which ultimately solves the three prominent problems of insecurity, high cost, and low mold-changing efficiency in the operation process, and significantly improves operability, environmental adaptability, and versatility. The utility model has the advantages of simple and convenient mold-changing operations, good safety, and reduced costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation regulations or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 This is a three-dimensional structural diagram of a foaming mold changing trolley from one perspective according to an embodiment of the utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of another perspective of the foaming mold changing trolley of one embodiment of the utility model;

[0027] Figure 3 It is a three-dimensional structural schematic diagram of a foaming mold changing trolley from another perspective according to an embodiment of the utility model.

[0028] Description of Figure Numbers:

[0029] Label name Label name 1 Mother trolley 31 Rolling element 2 Lifting components 32 Guide wheel 3 Sub-trolley 33 Transmission connection 11 Rail 34 beam 12 Limiting part 41 Drive unit 13 Scroll Wheel 411 Hand wheel 14 Locking parts 42 Reduction gearbox components 121 Limit slot 421 First transmission rod 52 Active baffle 422 Gearbox 53 Side fixed baffle 423 Second transmission rod 25 Transmission structure

[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described implementation methods are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two groups, such as two groups, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two groups of components or the interaction relationship between two groups of components, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] Please refer to Figure 1 to Figure 3 The utility model provides a foaming mold-changing mother and child trolley, comprising a mother trolley 1, a sub-trolley 3, a driving mechanism and multiple groups of lifting components 2; the multiple groups of lifting components 2 are arranged at intervals at the bottom of the mother trolley 1; a rolling body 31 for supporting the mold is arranged on the top of the sub-trolley 3, the sub-trolley 3 is arranged above the mother trolley 1, and the sub-trolley 3 can be slidably installed on the mother trolley 1; the driving mechanism comprises a driving part 41 and a reduction transmission component 42, the driving part 41 is installed on the mother trolley 1, and the two ends of the reduction transmission component 42 are respectively connected to the driving part 41 and the sub-trolley 3, and the driving mechanism is used to drive the sub-trolley 3 to move relative to the mother trolley 1.

[0037] In the above embodiment, the bottom of the mother trolley 1 can be provided with rollers 13 for movement, or the mother trolley 1 can be moved by a forklift. After the mother trolley 1 is moved into place, in order to make the mold supported on the sub-trolley 3 dock with the mold changing platform of the foaming machine, it is necessary to adjust the horizontal height of the bottom of the mold to be consistent with the mold changing platform. At this time, by adjusting each jacking component 2 separately, the jacking component 2 is supported between the ground and the mother trolley 1, so that the height and inclination of the mother trolley 1 can be adjusted. When the ground is uneven or the mold changing platform is subsided, the supporting surface on the sub-platform can be in the same plane as the mold changing platform, thereby avoiding the safety and operation difficulties caused by the break.

[0038] Specifically, this embodiment designs the docking trolley into a mother-and-child trolley, and the supporting position of the mother trolley 1 is provided with a separately adjustable jacking assembly 2; before adjustment, the wheels of the mother trolley 1 touch the ground, and the height of the mold-changing trolley plane (i.e., the supporting surface of the rolling body 31 on the child trolley 3) from the ground is designed to be 620mm. When performing mold changing operations, the height of the mold-changing trolley is adjusted to the same horizontal height through lifting according to the measured height of the corresponding foaming machine mold-changing platform, such as 625mm for the foaming machine mold-changing platform. After the mold-changing trolley is initially docked with the foaming machine mold-changing platform body, the height of the mold-changing trolley is gradually raised. If the ground is uneven, the corresponding adjustment amount is different. After adjustment, the gap between the mold placement plane and the mold change trolley plane can be effectively eliminated, thereby effectively eliminating the operational difficulties caused by the height difference; at the same time, because the minimum ground clearance of the foaming machine mold change platform is 625mm, the designed trolley height is slightly lower than the minimum 5mm. After the lifting component 2 drives the trolley to rise at least 5mm, the weight of the mold change trolley itself reaches 200kg. Under the action of gravity, it can ensure that the mold change trolley can be firmly placed on the ground, solving the problem that before the improvement, after being raised by a manual forklift, it still needs to rely on multiple people to dock and hold the forklift handle to prevent the mold from tipping over during the mold change process. Because its height is adjustable, it can be used for mold change operations of multiple foaming machines, thereby reducing the cost of preparing multiple dedicated mold change trolleys.

[0039] Secondly, when a manual forklift is used to dock the mold changing trolley with the mold changing platform, the deviation between the mold groove and the bull horn pulley is basically within 20 mm. Before the improvement, the mold was adjusted by continuously swinging the forklift handle left and right until it was aligned, and the alignment process was time-consuming and labor-intensive. This embodiment uses a parent-child trolley structure and sets a driving mechanism so that the child trolley 3 can be moved on the fixed mother trolley 1 to adjust the docking position of the mold, thereby correcting the deviation, effectively reducing the difficulty of precise docking during mold change, and making the operation simpler and more convenient. At the same time, the setting of the reduction transmission assembly 42 can also reduce the output torque of the drive unit 41, thereby saving labor.

[0040] In summary, the mother-child trolley can be effectively adjusted in height and width, thereby designing a universal mold changing trolley, which ultimately solves the three prominent problems of insecurity, high cost, and low mold changing efficiency in the operation process, and significantly improves operability, environmental adaptability, and versatility. This embodiment has the advantages of simple and convenient mold changing operations, good safety, and reduced costs.

[0041] In addition, during mold change operations, an infrared laser level can be used for alignment to assist in docking and eccentric adjustment, thereby achieving rapid mold change operations.

[0042] In one embodiment, a steel rail 11 is provided on the mother trolley 1, and a rotatable guide wheel 32 is provided at the bottom of the sub-trolley 3. The guide wheel 32 is rollingly connected to the steel rail 11, and the driving mechanism is used to drive the sub-trolley 3 to move along the length direction of the steel rail 11. The length direction of the steel rail 11 can be specifically the left-right direction, which is perpendicular to the front-back direction. When changing the mold, it is necessary to drive the mold to move along the front-back direction, and by driving the sub-trolley 3 to move left and right, the groove at the bottom of the mold can be adjusted to align with the horn pulley. By setting a moving structure in which the steel rail 11 cooperates with the guide wheel 32, the moving direction of the sub-trolley 3 is fixed and the movement is more stable.

[0043] In one embodiment, the driving part 41 is a hand wheel 411, and the hand wheel 411 is rotatably mounted on the mother trolley 1. By manually driving the hand wheel 411 to rotate, the left and right positions of the mold can be accurately controlled and can be adjusted in real time, which is convenient to use. Considering that the mold is relatively heavy and difficult to move after being placed on the sub-trolley 3, a reduction transmission assembly 42 is provided to change the transmission ratio, so that it is more labor-saving to rotate the hand wheel 411 manually, and the hand wheel 411 is used to realize the precise and aligned operation of the left and right movement of the mold changing trolley, which improves the convenience of operation and effectively reduces the difficulty of precise docking of the mold change.

[0044] In one embodiment, the reduction transmission assembly 42 includes a first transmission rod 421, a reduction box 422, and a second transmission rod 423. The two ends of the first transmission rod 421 are respectively connected to the hand wheel 411 and the reduction box 422, and the second transmission rod 423 is respectively connected to the reduction box 422 and the sub-trolley 3. A plurality of gears that mesh with each other but are of different sizes can be specifically arranged in the reduction box 422. The input torque of the pinion end can be reduced by driving the large gear with the small gear. The small gear is connected to the first transmission rod 421, and the large gear is connected to the second transmission rod 423.

[0045] In one embodiment, a transmission connection part 33 is provided at the bottom of the sub-trolley 3, and a threaded hole is provided in the transmission connection part 33, and the second transmission rod 423 passes through the threaded hole and is threadedly connected to the transmission connection part 33. The transmission connection part 33 and the second transmission rod 423 form a screw structure, which has a self-locking function, that is, the transmission connection part 33 and the sub-trolley 3 can only be driven to move left and right by the rotation of the second transmission rod 423, and the sub-trolley 3 cannot rotate the driving mechanism when it moves left and right, thereby achieving self-locking; it can also make the rotation of the driving hand wheel 411 more labor-saving.

[0046] The structure of the mother-and-child trolley greatly increases the flexibility of the mold changing and alignment operations, but it is also necessary to eliminate various safety hazards when transporting the mold through the mold changing trolley after the mold change. For example, due to inertia and uneven ground during movement, the mold weighing 1.5 tons may slide from the mother trolley 1 when placed on the sub-trolley 3, which causes various operational hazards. For this reason, it is necessary to add various positioning, limiting and locking fastening devices; not only can it ensure that the sub-trolley 3 can be effectively moved and adjusted within the required range of range adjustment, which is convenient for trolley docking, but it can also ensure that after the sub-trolley 3 is moved and adjusted, it is fixed by fixed pins and the mother-and-child trolleys become an inseparable whole, which is convenient for the safe movement of the mold after the mold is changed.

[0047] In one embodiment, the sub-trolley 3 is formed with a crossbeam 34, the mother trolley 1 is formed with a limiting portion 12, the limiting portion 12 is provided with a limiting groove 121, the crossbeam 34 passes through the limiting groove 121, and the length direction of the crossbeam 34 is the same as the moving direction of the sub-trolley 3. The length direction of the crossbeam 34 is also the left-right direction, and the left-right movement of the sub-trolley 3 can be further limited by the limiting groove 121. Specifically, the gap between the crossbeam 34 and the side wall of the limiting groove 121 is less than 3 mm, which well prevents the sub-trolley 3 from moving forward and backward, and improves the safety of the mold movement after the mold change operation.

[0048] In one embodiment, a latch hole is provided on the crossbeam 34, and the foaming mold changing sub-trolley also includes a positioning latch installed in the latch hole, and the positioning latch is used to abut against the limit portion 12 to limit the movement stroke of the sub-trolley 3. The left and right movement of the crossbeam 34 can be limited by two positioning latches located on the left and right sides of the limit portion 12. By limiting the positions of the two positioning latches, it can be ensured that the maximum adjustment range of the effective movement does not exceed 20 mm.

[0049] In one embodiment, the foaming mold changing sub-mother trolley also includes a movable baffle 52 and two sets of side fixed baffles 53. The two sets of side fixed baffles 53 are relatively arranged on both sides of the mother trolley 1, and the movable baffle 52 can be installed at one end of the sub-trolley 3 in a lifting manner. The movable baffle 52 is used to assist in limiting in the front and rear directions. When docking, the movable baffle 52 is lowered to release the limit so that the mold can pass through. The two sets of side fixed baffles 53 are used to assist in limiting in the left and right directions. When docking is not performed, the mold on the sub-trolley 3 can be blocked from three directions.

[0050] In one embodiment, the lifting assembly 2 is a scissor jack, and the number of the lifting assemblies 2 is four, and the four sets of lifting assemblies 2 are respectively arranged at the four corners of the bottom of the mother trolley 1. The scissor jack is a mechanical lifting structure with a simple structure and easy installation. The adjustment method of the jack can be driven by hand cranking, and the operator can stand to adjust it, which is easy to operate.

[0051] In addition, refer to Figure 1and Figure 3 Two sets of transmission structures 25 can also be added to the front end of the mother-and-child trolley. The two sets of transmission structures 25 are arranged on the left and the right, and are respectively connected to the scissor jacks on the left and right sides. Each set of transmission structures 25 is connected to the two sets of scissor jacks on the same side through gears, chains, transmission shafts and other structures, thereby driving them to rise and fall synchronously, realizing unilateral synchronous adjustment and improving efficiency.

[0052] In one embodiment, the bottom of the mother trolley 1 is also provided with multiple groups of rollers 13 and multiple groups of locking members 14, and the locking members 14 are arranged one by one with the rollers 13, and the locking members 14 are used to abut against the rollers 13 to limit the rotation of the rollers 13. When the mother trolley 1 needs to be fixed, the locking members 14 are driven to abut against the rollers 13 to limit the movement of the rollers 13, thereby limiting the movement of the mother trolley 1. The utility model realizes safe transportation through various auxiliary positioning, limiting, and locking mechanisms.

[0053] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A foaming mold changing trolley, characterized in that: include: Mother trolley; A plurality of lifting assemblies are arranged at intervals at the bottom of the mother trolley; A sub-trolley, the top of which is provided with a rolling body for supporting the mold, the sub-trolley is arranged above the mother trolley, and the sub-trolley is slidably mounted on the mother trolley; The driving mechanism includes a driving part and a reduction transmission assembly. The driving part is installed on the mother trolley. The two ends of the reduction transmission assembly are respectively connected to the driving part and the sub-trolley. The driving mechanism is used to drive the sub-trolley to move relative to the mother trolley.

2. The foaming mold changing trolley according to claim 1, characterized in that: The mother trolley is provided with a steel rail, and the bottom of the sub-trolley is provided with a rotatable guide wheel, the guide wheel is rollingly connected to the steel rail, and the driving mechanism is used to drive the sub-trolley to move along the length direction of the steel rail.

3. The foaming mold changing trolley according to claim 1, characterized in that: The driving part is a hand-cranked wheel, and the hand-cranked wheel is rotatably mounted on the mother trolley.

4. The foaming mold changing trolley according to claim 3, characterized in that: The reduction transmission assembly includes a first transmission rod, a reduction box, and a second transmission rod. The two ends of the first transmission rod are respectively connected to the hand wheel and the reduction box, and the second transmission rod is respectively connected to the reduction box and the sub-trolley.

5. The foaming mold changing trolley according to claim 4, characterized in that: A transmission connection part is provided at the bottom of the sub-trolley. The transmission connection part is provided with a threaded hole. The second transmission rod passes through the threaded hole and is threadedly connected to the transmission connection part.

6. The foaming mold changing trolley according to claim 1, characterized in that: The sub-trolley is formed with a crossbeam, the mother trolley is formed with a limiting portion, the limiting portion is provided with a limiting groove, the crossbeam passes through the limiting groove, and the length direction of the crossbeam is the same as the moving direction of the sub-trolley.

7. The foaming mold changing trolley according to claim 6, characterized in that: A latch hole is provided on the crossbeam, and the foaming mold changing sub-trolley also includes a positioning latch installed in the latch hole. The positioning latch is used to abut against the limiting portion to limit the moving stroke of the sub-trolley.

8. The foaming mold changing trolley according to any one of claims 1 to 7, characterized in that: The foaming mold changing sub-trolley also includes a movable baffle and two groups of side fixed baffles. The two groups of side fixed baffles are relatively arranged on both sides of the mother trolley, and the movable baffle can be lifted and lowered on one end of the sub-trolley.

9. The foaming mold changing trolley according to any one of claims 1 to 7, characterized in that: The jacking assembly is a scissor jack, and there are four groups of the jacking assemblies, which are respectively arranged at the four corners of the bottom of the mother trolley.

10. The foaming mold changing trolley according to any one of claims 1 to 7, characterized in that: The bottom of the mother trolley is also provided with a plurality of groups of rollers and a plurality of groups of locking members, the locking members are arranged in a one-to-one correspondence with the rollers, and the locking members are used to abut against the rollers to limit the rotation of the rollers.

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