Vertically downward rotating disc floating device

Abstract

The utility model relates to the technical field of production equipment, in particular to a vertically-downward rotating disc floating device which comprises a base, a lower mold, a lifting module, a mold disc, a rotating module, a rotating disc and a plurality of upper molds. The lower die is fixedly arranged on the base; the mold disc is movably arranged on one side of the base; the lifting module is arranged on the base, connected with the mold disc and used for driving the mold disc to ascend and descend in the direction perpendicular to the base; the rotary disc is movably arranged between the mold disc and the lower mold; the rotating module is arranged on the mold disc, connected with the rotating disc and used for driving the rotating disc to rotate; the multiple upper molds are fixedly arranged at the bottom of the rotary disc, and after the lifting module drives the mold disc to descend to the limiting position, any upper mold covers the top of the lower mold. The utility model has the characteristics of high reliability, long service life and low energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of production equipment, in particular to a vertical downward turntable floating device. Background Art

[0002] In the prior art, the axial position and radial position of the transmission sleeve mounted on the transmission shaft are restricted. To ensure the normal rotation of the turntable, a certain gap needs to be maintained between the turntable and the mold plate at all times to avoid wear between the turntable and the mold plate during rotation. However, when the turntable with the above structure is closed, due to the gap between the turntable and the mold plate, the turntable is easily deformed to a certain extent by the closing force. The degree of deformation of the turntable depends on the width of the gap between the turntable and the mold plate. The parallelism between the upper mold and the lower mold set on the turntable will also decrease until the parallelism exceeds the product forming process requirements, resulting in a short service life of the turntable. Summary of the invention

[0003] Aiming at the technical problem of low service life of the turntable in the prior art, the embodiment of the utility model provides a vertical downward turntable floating device, comprising: a base, a lower mold, a lifting module, a mold plate, a rotating module, a turntable and a plurality of upper molds;

[0004] The lower mold is fixedly arranged on the base;

[0005] The mold plate is movably arranged on one side of the base;

[0006] The lifting module is arranged on the base, and is connected to the mold plate, and is used to drive the mold plate to lift and lower in a direction perpendicular to the base;

[0007] The turntable is movably arranged between the mold plate and the lower mold;

[0008] The rotating module is arranged on the mold plate, and the rotating module is connected to the rotating plate, and is used to drive the rotating plate to rotate;

[0009] A plurality of upper molds are fixedly arranged at the bottom of the turntable. After the lifting module drives the mold plate to descend to the limit position, any upper mold cover is arranged on the top of the lower mold.

[0010] Further, the lifting module includes: a number of guide columns and hydraulic cylinders;

[0011] A plurality of guide posts are fixedly arranged on the base, a plurality of guide posts are arranged in a direction perpendicular to the base, and a plurality of guide posts are slidably connected to the mold plate to guide the mold plate;

[0012] The hydraulic cylinder is fixedly arranged on the base, and the execution end of the hydraulic cylinder is connected to the mold plate to drive the mold plate to rise and fall.

[0013] Furthermore, the lifting module also includes: a support column, which is fixedly arranged on the base. When any upper mold cover is set on the lower mold, the top end surface of the support column abuts against the bottom surface of the turntable to limit the turntable.

[0014] Furthermore, the rotation module includes: a motor, a speed change component and a floating component;

[0015] The floating assembly is arranged on the mold plate, and the floating assembly is connected to the turntable to drive the turntable to rotate;

[0016] The speed change assembly is arranged on the floating assembly, and the speed change assembly is connected to the floating assembly to drive the floating assembly to operate;

[0017] The motor is arranged on an external bearing device, and the execution end of the motor is connected to the speed change assembly. The motor moves synchronously with the rise and fall of the die plate, and is used to drive the speed change assembly to operate.

[0018] Further, the floating assembly comprises: an assembly hole, a first bearing, a transmission shaft, a transmission sleeve, a plurality of second bearings, a first connecting member, a limiting flange, a plurality of second connecting members and an adjustment mechanism;

[0019] The assembly holes are provided on the mold plate;

[0020] The transmission shaft is movably arranged in the assembly hole, the transmission shaft is identical to the central axis of the assembly hole, and the top end of the transmission shaft is connected to the speed change assembly;

[0021] The first bearing sleeve is arranged on the transmission shaft, the first bearing is fixedly connected to the inner wall of the assembly hole, and the first bearing is connected to the top end of the transmission shaft, and is used to axially limit the transmission shaft;

[0022] The transmission sleeve is movably mounted on the bottom end of the transmission shaft, and the bottom end of the transmission sleeve protrudes from the bottom surface of the assembly hole;

[0023] A plurality of second bearing sleeves are arranged on the transmission sleeve, and a plurality of second bearings are connected to the inner wall of the assembly hole, and are used to radially limit the transmission sleeve;

[0024] The first connecting member is arranged on the transmission shaft, and the first connecting member is connected to the transmission sleeve, and is used to drive the transmission sleeve and the transmission shaft to rotate synchronously;

[0025] The limiting flange cover is arranged at the bottom end of the transmission sleeve, the top surface of the limiting flange abuts against the bottom end surface of the transmission sleeve, the turntable sleeve is arranged at the bottom end of the transmission sleeve, and the turntable is located between the limiting flange and the mold plate;

[0026] A plurality of second connecting members are arranged on the limiting flange, and the plurality of second connecting members are connected to the bottom end surface of the transmission shaft, and are used for fixedly connecting the transmission shaft and the limiting flange;

[0027] The adjusting mechanism is arranged at the connection between the limiting flange and the transmission shaft, and is used for adjusting the maximum slit width between the rotating disk and the mold disk.

[0028] Furthermore, the adjustment mechanism includes: an adjustment ring, which is arranged in the inner cavity of the transmission sleeve, the adjustment ring is located between the limit flange and the transmission shaft, and a plurality of second connecting parts pass through the adjustment ring and are fixedly connected to the bottom end face of the transmission shaft, and the adjustment ring is used to adjust the maximum slit width between the turntable and the mold plate.

[0029] Furthermore, the adjustment mechanism further comprises: a limiting protrusion, which is fixedly arranged on the curved outer wall of the transmission sleeve, and the limiting protrusion is closely attached to the top surface of the turntable.

[0030] Furthermore, the first connecting member is fixedly connected to the transmission shaft, the first connecting member is slidably connected to the transmission sleeve, and the sliding guide between the first connecting member and the transmission sleeve is arranged along the axial direction of the transmission shaft.

[0031] Furthermore, the maximum slit width between the top surface of the turntable and the bottom surface of the mold plate ranges from 0.2 mm to 0.25 mm.

[0032] Further, the speed change assembly comprises: a speed reducer and a connecting flange;

[0033] The reducer is arranged at the top of the transmission shaft, and the output end of the reducer is connected to the top of the transmission shaft to drive the transmission shaft to rotate;

[0034] The connecting flange connects the actuator end of the motor and the input end of the reducer.

[0035] The vertical downward turntable floating device according to the embodiment of the utility model has the following beneficial effects:

[0036] 1. This device reserves a certain axial movable space for the transmission sleeve, so that the turntable set at the bottom end of the transmission sleeve has a certain axial displacement space, so that there is a certain gap between the turntable and the bottom surface of the mold plate before the mold is closed, avoiding friction between the turntable and the bottom surface of the mold plate during rotation, thereby improving the reliability and service life of the device and reducing the energy consumption of the motor.

[0037] 2. This device reserves a certain axial movable space for the transmission sleeve, so that the turntable set at the bottom end of the transmission sleeve has a certain axial displacement space. After the turntable completes the mold closing, under the support of the lower mold and the support column, the top surface of the turntable fits with the bottom surface of the mold plate, which improves the force state of the turntable, ensures the parallelism between the upper mold and the lower mold, and enables the upper mold and the lower mold to withstand a larger clamping force.

[0038] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of assembly according to an embodiment of the utility model.

[0040] Description of the accompanying drawings:

[0041] Base, 2-lower mold, 5-mold plate, 6-turntable, 7-upper mold.

[0042] Lifting module: support column.

[0043] Rotation module: 41-motor, floating assembly {421-assembly hole, 422-first bearing, 423-transmission shaft, 424-transmission sleeve, 425-second bearing, 426-first connecting piece, 427-limiting flange, 428-second connecting piece, adjustment mechanism (4291-adjusting ring, 4292-limiting protrusion)}, speed change assembly (431-reducer, 432-connecting flange). Implementation

[0044] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0045] The above and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only the directions of the reference drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention. In addition, in all embodiments, the same reference numerals represent the same elements.

[0046] First, combine Figure 1 The vertically downward turntable 6 floating device according to the embodiment of the utility model is described, which is used for opening and closing molds of injection molding molds and has a wide range of application scenarios.

[0047] like Figure 1 As shown, the vertical downward turntable 6 floating device of the embodiment of the utility model comprises: a base 1, a lower mold 2, a lifting module, a mold plate 5, a rotating module, a turntable 6 and a plurality of upper molds 7.

[0048] Specifically, Figure 1As shown, the lower mold 2 is fixedly arranged on the base 1; the mold plate 5 is movably arranged on one side of the base 1; the lifting module is arranged on the base 1, and the lifting module is connected to the mold plate 5, and is used to drive the mold plate 5 to lift and lower in a direction perpendicular to the base 1; the turntable 6 is movably arranged between the mold plate 5 and the lower mold 2; the rotating module is arranged on the mold plate 5, and the rotating module is connected to the turntable 6, and is used to drive the turntable 6 to rotate; a plurality of upper molds 7 are fixedly arranged at the bottom of the turntable 6, and after the lifting module drives the mold plate 5 to descend to the extreme position, any upper mold 7 is covered on the top of the lower mold 2.

[0049] Further, if Figure 1 As shown, the lifting module includes: a plurality of guide columns (not shown in the figure) and a hydraulic cylinder (not shown in the figure); a plurality of guide columns are fixedly arranged on the base 1, a plurality of guide columns are arranged in a direction perpendicular to the base 1, and a plurality of guide columns are slidably connected to the mold plate 5 for guiding the mold plate 5; the hydraulic cylinder is fixedly arranged on the base 1, and the execution end of the hydraulic cylinder is connected to the mold plate 5 for driving the mold plate 5 to lift and lower.

[0050] Further, if Figure 1 As shown, the lifting module also includes: a support column 31, which is fixedly arranged on the base 1. When any upper mold 7 is covered on the lower mold 2, the top end surface of the support column 31 abuts against the bottom surface of the turntable 6 to limit the turntable 6.

[0051] Further, if Figure 1 As shown, the rotation module includes: a motor 41, a speed change component and a floating component;

[0052] The floating assembly is arranged on the mold plate 5, and the floating assembly is connected to the turntable 6, so as to drive the turntable 6 to rotate; the speed changing assembly is arranged on the floating assembly, and the speed changing assembly is connected to the floating assembly, so as to drive the floating assembly to operate; the motor 41 is arranged on an external carrying device (not shown in the figure), and the execution end of the motor 41 is connected to the speed changing assembly, and the motor 41 is synchronously displaced with the rise and fall of the mold plate 5, so as to drive the speed changing assembly to operate.

[0053] Further, if Figure 1As shown, the floating assembly includes: an assembly hole 421, a first bearing 422, a transmission shaft 423, a transmission sleeve 424, a plurality of second bearings 425, a first connecting piece 426, a limiting flange 427, a plurality of second connecting pieces 428 and an adjusting mechanism; the assembly hole 421 is provided on the mold plate 5; the transmission shaft 423 is movably arranged in the assembly hole 421, the transmission shaft 423 has the same central axis as the assembly hole 421, and the top of the transmission shaft 423 is connected to the speed change assembly; the first bearing 422 is sleeved on the transmission shaft 423, the first bearing 422 is fixedly connected to the inner wall of the assembly hole 421, and the first bearing 422 is connected to the top of the transmission shaft 423 for axially limiting the transmission shaft 423; the transmission sleeve 424 is movably sleeved on the bottom end of the transmission shaft 423, and the bottom end of the transmission sleeve 424 protrudes from the bottom surface of the assembly hole 421; a plurality of second bearings 425 are sleeved on the transmission sleeve 424, and a plurality of second bearings 425 and the assembly hole 421 are fixedly connected to the top of the transmission shaft 423. 424 is connected to the inner wall of the transmission sleeve 424, and is used to radially limit the transmission sleeve 424; the first connecting member 426 is arranged on the transmission shaft 423, and the first connecting member 426 is connected to the transmission sleeve 424, and is used to drive the transmission sleeve 424 and the transmission shaft 423 to rotate synchronously, and the first connecting member 426 can use a key for torque transmission; the limiting flange 427 is covered at the bottom end of the transmission sleeve 424, and the top surface of the limiting flange 427 abuts against the bottom end face of the transmission sleeve 424, and the turntable 6 is sleeved at the bottom end of the transmission sleeve 424, and the turntable 6 is located between the limiting flange 427 and the mold plate 5; a plurality of second connecting members 428 are arranged on the limiting flange 427, and a plurality of second connecting members 428 are connected to the bottom end face of the transmission shaft 423, and are used to fix the transmission shaft 423 and the limiting flange 427, and the second connecting member 428 can use a screw; the adjustment mechanism is arranged at the connection between the limiting flange 427 and the transmission shaft 423, and is used to adjust the maximum slit width between the turntable 6 and the mold plate 5.

[0054] Further, if Figure 1 As shown, the adjustment mechanism includes: an adjustment ring 4291, which is arranged in the inner cavity of the transmission sleeve 424, and the adjustment ring 4291 is located between the limiting flange 427 and the transmission shaft 423. A plurality of second connecting members 428 pass through the adjustment ring 4291 and are fixedly connected to the bottom end face of the transmission shaft 423. The user can adjust the maximum slit width between the turntable 6 and the mold plate 5 by replacing the adjustment ring 4291 with different thicknesses.

[0055] Further, if Figure 1 As shown, the adjustment mechanism further includes: a limiting protrusion 4292 , which is fixedly disposed on the curved outer wall of the transmission sleeve 424 , and the limiting protrusion 4292 is closely attached to the top surface of the turntable 6 .

[0056] Further, if Figure 1As shown, the first connecting member 426 is fixedly connected to the transmission shaft 423 , the first connecting member 426 is slidably connected to the transmission sleeve 424 , and the sliding guide between the first connecting member 426 and the transmission sleeve 424 is arranged along the axial direction of the transmission shaft 423 .

[0057] Further, if Figure 1 As shown, the maximum slit width between the top surface of the turntable 6 and the bottom surface of the mold plate 5 ranges from 0.2 mm to 0.25 mm.

[0058] Further, if Figure 1 As shown, the speed change assembly includes: a reducer 431 and a connecting flange 432; the reducer 431 is arranged at the top end of the transmission shaft 423, and the output end of the reducer 431 is connected to the top end of the transmission shaft 423, which is used to drive the transmission shaft 423 to rotate; the connecting flange 432 connects the execution end of the motor 41 and the input end of the reducer 431.

[0059] When the equipment is running, the hydraulic cylinder drives the mold plate 5 to rise and fall along the guide of the guide column to complete the mold opening and closing action. When the turntable 6 is driven by the mold plate 5 to descend to the extreme position, the bottom surface of the turntable 6 abuts against the top end surface of the support column 31, and one of the upper molds 7 arranged at the bottom of the turntable 6 is covered on the top of the lower mold 2 to complete the mold closing action; in the mold closing process, before the bottom surface of the turntable 6 and the top end surface of the support column 31, the motor 41 is started, and the motor 41 drives the speed change component and the floating component to operate, thereby driving the turntable 6 to rotate, and then adjusting the position of the upper mold 7.

[0060] The working principle of the speed change assembly is as follows: after the motor 41 is started, the execution end of the motor 41 is fixedly assembled with the input end of the reducer 431 through the connecting flange 432, driving the reducer 431 to operate, and the output end of the reducer 431 outputs the power of the motor 41.

[0061] The working principle of the floating assembly is as follows: the output end of the reducer 431 drives the transmission shaft 423 to rotate. During the rotation process, the transmission shaft 423 transmits the torque of the transmission shaft 423 through the first connecting member 426, driving the transmission sleeve 424 to rotate synchronously, thereby making the limiting protrusion 4292 and the transmission shaft 423 rotate synchronously. At the same time, the transmission shaft 423 drives the limiting flange 427 to rotate synchronously through the fixed assembly between the second connecting member 428 and the limiting flange 427. Since the turntable 6 is sleeved on the bottom end of the transmission shaft 423 and the turntable 6 is located at the limiting The first connecting piece 426 is connected to the first connecting piece 426 by a sliding guide, and the second connecting piece 426 is connected to the first connecting piece 426 by a sliding guide. Parallel to the central axis of the transmission shaft 423, the transmission sleeve 424 is affected by gravity so that the bottom end surface of the transmission sleeve 424 is always in contact with the top surface of the limiting flange 427, and the limiting protrusion 4292 arranged on the outer wall of the transmission sleeve 424 is always in contact with the top surface of the turntable 6. The turntable 6 is affected by gravity so that the bottom surface of the turntable 6 is always in contact with the top surface of the limiting flange 427. Therefore, in the process of opening and closing the mold, there is a certain amount of room for movement in the axial position of the turntable 6. In the process of opening and closing the mold, the turntable 6 and the transmission sleeve 424 are affected by gravity and drop to an extreme The limit position makes a gap between the top surface of the turntable 6 and the bottom surface of the mold plate 5 to avoid friction between the turntable 6 and the mold plate 5 driven by the transmission sleeve 424 and the limiting flange 427, which may cause wear of the turntable 6 or the mold plate 5; after the mold is closed, the turntable 6 and the transmission sleeve 424 rise a certain distance under the support of the lower mold 2 and the support column 31 until the top surface of the turntable 6 and the bottom surface of the mold plate 5 are against each other, thereby improving the stress state of the turntable 6 and ensuring the parallelism between the upper mold 7 and the lower mold 2, so that the upper mold 7 and the lower mold 2 can withstand a larger clamping force.

[0062] Above, refer to Figure 1 The vertical downward turntable floating device according to the embodiment of the utility model is described, which has the following beneficial effects:

[0063] 1. This device reserves a certain axial movable space for the transmission sleeve, so that the turntable set at the bottom end of the transmission sleeve has a certain axial displacement space, so that there is a certain gap between the turntable and the bottom surface of the mold plate before the mold is closed, avoiding friction between the turntable and the bottom surface of the mold plate during rotation, thereby improving the reliability and service life of the device and reducing the energy consumption of the motor.

[0064] 2. This device reserves a certain axial movable space for the transmission sleeve, so that the turntable set at the bottom end of the transmission sleeve has a certain axial displacement space. After the turntable completes the mold closing, under the support of the lower mold and the support column, the top surface of the turntable fits with the bottom surface of the mold plate, which improves the force state of the turntable, ensures the parallelism between the upper mold and the lower mold, and enables the upper mold and the lower mold to withstand a larger clamping force.

[0065] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0066] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A vertical downward turntable floating device, characterized in that: It includes: base, lower mold, lifting module, mold plate, rotating module, turntable and several upper molds; The lower mold is fixedly arranged on the base; The mold plate is movably arranged on one side of the base; The lifting module is arranged on the base, and the lifting module is connected to the mold plate, and is used to drive the mold plate to lift and lower in a direction perpendicular to the base; The turntable is movably arranged between the mold plate and the lower mold; The rotating module is arranged on the mold plate, and the rotating module is connected to the rotating plate, and is used to drive the rotating plate to rotate; The plurality of upper molds are fixedly arranged at the bottom of the turntable. After the lifting module drives the mold plate to descend to the limit position, any one of the upper molds is covered on the top of the lower mold.

2. The vertically downward turntable floating device according to claim 1, characterized in that: The lifting module comprises: a plurality of guide columns and a hydraulic cylinder; The plurality of guide posts are fixedly arranged on the base, the plurality of guide posts are arranged in a direction perpendicular to the base, and the plurality of guide posts are slidably connected to the mold plate to guide the mold plate; The hydraulic cylinder is fixedly arranged on the base, and the execution end of the hydraulic cylinder is connected to the mold plate to drive the mold plate to rise and fall.

3. The vertically downward turntable floating device as claimed in claim 2, characterized in that: The lifting module further includes: a support column, which is fixedly arranged on the base. When any one of the upper molds is covered on the lower mold, the top end surface of the support column abuts against the bottom surface of the turntable to limit the turntable.

4. The vertically downward turntable floating device according to claim 1, characterized in that: The rotating module comprises: a motor, a speed changing assembly and a floating assembly; The floating assembly is arranged on the mold plate, and the floating assembly is connected to the turntable to drive the turntable to rotate; The speed change assembly is arranged on the floating assembly, and the speed change assembly is connected to the floating assembly to drive the floating assembly to operate; The motor is arranged on an external carrying device, the execution end of the motor is connected to the speed change assembly, and the motor moves synchronously with the rise and fall of the mold plate to drive the speed change assembly to operate.

5. The vertically downward turntable floating device as claimed in claim 4, characterized in that: The floating assembly comprises: an assembly hole, a first bearing, a transmission shaft, a transmission sleeve, a plurality of second bearings, a first connecting piece, a limiting flange, a plurality of second connecting pieces and an adjusting mechanism; The assembly hole is provided on the mold plate; The transmission shaft is movably arranged in the assembly hole, the transmission shaft is identical to the central axis of the assembly hole, and the top end of the transmission shaft is connected to the speed change assembly; The first bearing is sleeved on the transmission shaft, the first bearing is fixedly connected to the inner wall of the assembly hole, and the first bearing is connected to the top end of the transmission shaft, and is used to axially limit the transmission shaft; The transmission sleeve is movably mounted on the bottom end of the transmission shaft, and the bottom end of the transmission sleeve protrudes from the bottom surface of the assembly hole; The plurality of second bearing sleeves are arranged on the transmission sleeve, and the plurality of second bearings are connected to the inner wall of the assembly hole, and are used to radially limit the transmission sleeve; The first connecting member is disposed on the transmission shaft, and the first connecting member is connected to the transmission sleeve, and is used to drive the transmission sleeve and the transmission shaft to rotate synchronously; The limiting flange cover is arranged at the bottom end of the transmission sleeve, the top surface of the limiting flange abuts against the bottom end surface of the transmission sleeve, the turntable is arranged at the bottom end of the transmission sleeve, and the turntable is located between the limiting flange and the mold plate; The plurality of second connecting members are arranged on the limiting flange, and the plurality of second connecting members are connected to the bottom end surface of the transmission shaft, and are used to fixedly connect the transmission shaft and the limiting flange; The adjustment mechanism is arranged at the connection between the limiting flange and the transmission shaft, and is used for adjusting the maximum slit width between the turntable and the mold plate.

6. The vertically downward turntable floating device as claimed in claim 5, characterized in that: The adjustment mechanism includes: an adjustment ring, which is arranged in the inner cavity of the transmission sleeve, the adjustment ring is located between the limit flange and the transmission shaft, the plurality of second connecting members pass through the adjustment ring and are fixedly connected to the bottom end surface of the transmission shaft, and the adjustment ring is used to adjust the maximum slit width between the turntable and the mold plate.

7. The vertically downward turntable floating device as claimed in claim 6, characterized in that: The adjustment mechanism further comprises: a limiting protrusion, which is fixedly arranged on the curved outer wall of the transmission sleeve, and the limiting protrusion is closely attached to the top surface of the rotating disk.

8. The vertically downward turntable floating device as claimed in claim 7, characterized in that: The first connecting member is fixedly connected to the transmission shaft, the first connecting member is slidably connected to the transmission sleeve, and the sliding guide between the first connecting member and the transmission sleeve is arranged along the axial direction of the transmission shaft.

9. The vertically downward turntable floating device as claimed in claim 5, characterized in that: The maximum slit width between the top surface of the turntable and the bottom surface of the mold plate ranges from 0.2 mm to 0.25 mm.

10. The vertically downward turntable floating device according to claim 5, characterized in that: The speed change assembly comprises: a reducer and a connecting flange; The reducer is arranged at the top end of the transmission shaft, and the output end of the reducer is connected to the top end of the transmission shaft to drive the transmission shaft to rotate; The connecting flange connects the execution end of the motor and the input end of the reducer.

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