Auxiliary mechanism for mold turntable, turntable module and injection molding machine

Abstract

The invention relates to the technical field of multi-color injection molds, in particular to an auxiliary mechanism for a mold turntable, a turntable module and an injection molding machine, the auxiliary mechanism comprises an auxiliary main body which is slidably connected to a bottom plate, and the sliding direction of the auxiliary main body relative to the bottom plate is parallel to the moving direction of the turntable relative to the bottom plate; the synchronous movement structure is used for driving the auxiliary body and the turntable to move synchronously; the supporting structure is arranged on the auxiliary body and used for supporting the rotary disc. In the synchronous moving process of the auxiliary body and the rotating disc, the supporting structure is used for supporting the rotating disc, so that the situation that the rotating disc falls and deviates due to the gravity effect is reduced, insertion damage and abrasion between workpieces with precision fit of a front mold and a rear mold can be reduced, and then the normal service life of the molds is effectively kept.

Description

Technical Field

[0001] The invention relates to the technical field of multi-color injection molds, and in particular to an auxiliary mechanism for a mold turntable, a turntable module and an injection molding machine. Background Art

[0002] Multi-color injection molding products refer to plastic products that are made of two or more colors of materials or different materials through more than one flow path. They are now widely used in the market. Correspondingly, multi-color injection molding products usually use a turntable multi-color injection molding machine. The mold is installed on a turntable, and the rotation of the turntable drives the mold to rotate, so that the mold cavity or mold core can achieve the purpose of position exchange, so as to produce multi-color products.

[0003] Reference Figure 1 In the related art, a turntable multi-color injection molding machine includes a turntable module and a fixed mold plate; wherein the turntable module includes a bottom plate 1 and a turntable 2 mounted on the bottom plate 1, and the turntable 2 is mounted with one of a male mold and a female mold, and the fixed mold plate is mounted with the other of the male mold and the female mold. Specifically, the turntable 2 is connected to the bottom plate 1 in rotation through a rotating shaft 3 that can move radially, and a positioning column 11 for positioning the turntable 2 is correspondingly provided on the bottom plate 1.

[0004] During the actual injection molding process, in the mold closing state, the turntable 2 is positioned on the base plate 1 by the action of the rotating shaft 3 and the positioning column 11; when the first injection molding is completed, the rotating shaft 3 drives the turntable 2 away from the base plate 1 to escape the positioning action of the positioning column 11, and the turntable 2 is driven by the rotating shaft 3 to rotate a preset angle, and then the turntable 2 is pulled back and positioned on the base plate 1, and then the mold can be closed for the next injection molding.

[0005] However, in actual frequent working processes, the turntable 2 after being separated from the positioning function of the positioning column 11 is prone to fall and deviate due to the effect of gravity, thereby reducing the normal service life of the mold. Summary of the invention

[0006] On the first aspect, in order to reduce the situation where the turntable falls and deviates due to gravity, thereby effectively maintaining the normal service life of the mold, the present invention provides an auxiliary mechanism for the mold turntable.

[0007] The specific technical solutions adopted are as follows:

[0008] An auxiliary mechanism for a mold turntable, comprising:

[0009] An auxiliary body is slidably connected to the bottom plate, and a sliding direction of the auxiliary body relative to the bottom plate is parallel to a moving direction of the turntable relative to the bottom plate;

[0010] A synchronous motion structure, used for driving the auxiliary body to move synchronously with the turntable;

[0011] The supporting structure is arranged on the auxiliary main body and is used for supporting the rotating disk.

[0012] By adopting the above technical solution, when the turntable is driven away from the base plate and is separated from the positioning effect of the positioning column, the synchronous motion structure drives the auxiliary body and the turntable to move synchronously, and in the process of synchronous movement of the auxiliary body and the turntable, the support structure is used to provide support for the turntable, thereby reducing the situation where the turntable falls and deviates due to gravity, thereby reducing the puncture and wear between the workpieces with precise matching of the front and rear molds, thereby effectively maintaining the normal service life of the mold.

[0013] Optionally, the synchronous motion structure includes a first clamping block and a second clamping block, and the first clamping block and the second clamping block are arranged along the thickness direction of the turntable to form a gap, and the gap is used for the outer peripheral edge of the turntable to be embedded.

[0014] By adopting the above technical solution, the interval between the first clamp block and the second clamp block bracket is utilized to achieve a clamping effect on the outer periphery of the turntable, so there is no need to add a power source. When the turntable is driven close to or away from the base plate, the auxiliary body moves with the movement of the turntable. The overall structure is simple and practical, and it saves costs and facilitates subsequent maintenance.

[0015] Optionally, a side wall of one of the first clamping block and the second clamping block away from the bottom plate is provided with an anti-wear abutment member for the end face of the turntable to abut against, and a distance between the other side wall and the anti-wear abutment member is greater than the thickness of the turntable.

[0016] Because the turntable needs to be driven to rotate to a preset angle during the actual working process, that is, the turntable will move relative to the first clamp block and the second clamp block. By adopting the above technical solution, when the turntable is driven away from the bottom plate, it will keep in contact with the anti-wear abutment member, and form a gap with the side without the anti-wear abutment member, so that during the rotation of the turntable, the wear between the first clamp block and the turntable, and the wear between the second clamp block and the turntable is effectively reduced.

[0017] Optionally, the opposite side walls of the first clamping block and the second clamping block are both provided with anti-wear abutting members for the end surface of the turntable to abut against.

[0018] By adopting the above technical solution, the anti-wear abutment member is used to abut the two end surfaces of the turntable that are separated from each other, thereby reducing the wear caused by direct contact with the first clamping block and the second clamping block during the rotation of the turntable. In addition, through the abutment of the anti-wear abutment member, the synchronous movement displacement of the auxiliary body and the turntable can be kept consistent, which can reduce the wear caused by relative displacement between the turntable and the support structure, thereby reducing the support effect.

[0019] Optionally, the anti-wear and abutment member comprises a wear-resistant graphite block and / or a abutment ball.

[0020] By adopting the above technical solution, the wear and tear during the rotation of the turntable can be effectively reduced.

[0021] Optionally, the synchronous motion structure includes a transmission member and a driving member, one end of the transmission member is connected to the auxiliary body, and the other end is connected to the output end of the driving member; the driving member is used to drive the transmission member to move.

[0022] By adopting the above technical solution, the auxiliary body can be actively moved, and the movement synchronization of the auxiliary body and the turntable can be controlled by controlling the driving member; compared with the clamping method, the wear on the turntable can be further reduced.

[0023] Optionally, the support structure includes a support roller rotatably connected to the auxiliary body, and a rotation axis of the support roller is parallel to a rotation axis of the turntable.

[0024] By adopting the above technical solution, the support roller is used as the support structure of the turntable. During the rotation of the turntable, the support roller also rotates relatively, thereby effectively reducing the wear between the support roller and the turntable due to relative displacement.

[0025] Optionally, the support structure includes support balls movably embedded in the auxiliary body.

[0026] By adopting the above technical solution, in addition to reducing the wear of the turntable and the supporting balls during rotation, the wear between the turntable and the supporting balls due to relative displacement can also be reduced when the turntable approaches or moves away from the base plate.

[0027] Secondly, in order to reduce the situation where the turntable falls and deviates due to gravity, thereby effectively maintaining the normal service life of the mold, the present invention also provides a turntable module.

[0028] The specific technical solutions adopted are as follows:

[0029] A turntable module comprises a bottom plate, a turntable mounted on the bottom plate and the auxiliary mechanism for the mold turntable.

[0030] On the third aspect, in order to reduce the situation where the turntable falls and deviates due to gravity, thereby effectively maintaining the normal service life of the mold, the present invention also provides an injection molding machine.

[0031] The specific technical solutions adopted are as follows:

[0032] An injection molding machine comprises a fixed mold plate and the above-mentioned turntable module.

[0033] In summary, the present invention includes at least one of the following beneficial technical effects:

[0034] 1. Reduce the situation where the turntable falls and deviates due to gravity, which can reduce the damage and wear between the workpieces with precise matching of the front and rear molds, thereby effectively maintaining the normal service life of the mold;

[0035] 2. Without adding a power source, the auxiliary body can move with the movement of the turntable when the turntable is driven close to or away from the bottom plate, and can effectively reduce the wear between the first clamping block and the turntable, and the wear between the second clamping block and the turntable during the rotation of the turntable, thereby maintaining a good service life of the auxiliary mechanism and the turntable;

[0036] 3. Effectively reduce the wear and tear between the turntable and the supporting structure due to relative displacement, thereby reducing the supporting effect, thereby maintaining a good service life of the auxiliary mechanism and the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a cross-sectional view of the turntable module pointed out in the related art mentioned in this application;

[0038] Figure 2 is a cross-sectional view of a turntable module in an embodiment of the present application;

[0039] Figure 3 It is a partial schematic diagram for showing the auxiliary mechanism in Example 1 of the present application;

[0040] Figure 4 is an exploded schematic diagram of the auxiliary mechanism in Example 1 of the present application;

[0041] Figure 5 is a schematic diagram for illustrating the anti-wear and aggression member in Example 2 of the present application;

[0042] Figure 6 It is a front view of the turntable module in the embodiment of the present application.

[0043] Explanation of the reference numerals: 1. Base plate; 11. Positioning column; 2. Turntable; 3. Rotating shaft; 4. Auxiliary body; 41. Rotating matching groove; 5. Sliding assembly; 51. Linear bearing; 52. Guide column; 6. Synchronous motion structure; 61. First clamping block; 62. Second clamping block; 63. Wear-resistant graphite block; 64. Resistance ball; 7. Support roller. DETAILED DESCRIPTION

[0044] The present application is further described in detail below in conjunction with the accompanying drawings.

[0045] Reference Figure 1In the related art, a turntable multi-color injection molding machine includes a turntable module and a fixed mold plate; wherein the turntable module includes a bottom plate 1 and a turntable 2 mounted on the bottom plate 1, and the turntable 2 is mounted with one of a male mold and a female mold, and the fixed mold plate is mounted with the other of the male mold and the female mold. Specifically, the turntable 2 is connected to the bottom plate 1 in rotation through a rotating shaft 3 that can move radially, and a positioning column 11 for positioning the turntable 2 is correspondingly provided on the bottom plate 1.

[0046] During the actual injection molding process, in the mold closing state, the turntable 2 is positioned on the base plate 1 by the action of the rotating shaft 3 and the positioning column 11; when the first injection molding is completed, the rotating shaft 3 drives the turntable 2 away from the base plate 1 to escape the positioning action of the positioning column 11, and the turntable 2 is driven by the rotating shaft 3 to rotate a preset angle, and then the turntable 2 is pulled back and positioned on the base plate 1, and then the mold can be closed for the next injection molding.

[0047] Specifically, if applied to a two-color injection mold, the preset angle that the turntable 2 needs to rotate each time is 180°; if applied to a three-color injection mold, the preset angle that the turntable 2 needs to rotate each time is 120°; if applied to a four-color injection mold, the preset angle that the turntable 2 needs to rotate each time is 90°.

[0048] At the same time, before driving the turntable 2 to rotate to a preset angle, the turntable 2 needs to be driven away from the base plate 1 to disengage the positioning function of the positioning column 11; at this time, the weight of the turntable 2 and the male mold or female film installed thereon is completely borne by the rotating shaft 3 extending a distance from the surface of the base plate 1.

[0049] In the above situation, the shaft 3 is prone to slight deformation downward, and the turntable 2 will also slightly tilt accordingly. Although the shaft 3 itself has high rigidity, the slight deformation will not have much impact on the normal mold closing and injection molding. However, in the normal injection molding process, the turntable 2 needs to be frequently ejected and rotated. Frequent operation will reduce the bending resistance of the shaft 3, which will increase the deformation of the shaft 3, that is, the turntable 2 will show more obvious tilt, fall and deviation, which will cause the insertion and wear of the workpieces with precise matching between the front and rear molds, reducing the normal service life of the mold.

[0050] On the one hand, in order to reduce the situation where the turntable 2 falls and deviates due to gravity, thereby effectively maintaining the normal service life of the mold, an embodiment of the present application discloses an auxiliary mechanism for the mold turntable.

[0051] Example 1

[0052] Reference Figure 2 and Figure 3The auxiliary mechanism for the mold turntable includes an auxiliary body 4, a synchronous motion structure 6 and a supporting structure; wherein the auxiliary body 4 is slidably connected to the base plate 1, and the sliding direction of the auxiliary body 4 relative to the base plate 1 is parallel to the moving direction of the turntable 2 relative to the base plate 1, that is, the movement of the auxiliary body 4 is consistent with the moving direction of the turntable 2.

[0053] At the same time, the synchronous motion structure 6 is used to drive the auxiliary body 4 and the turntable 2 to achieve synchronous movement, that is, the auxiliary body 4 can maintain a relatively static state with the turntable 2; and the support structure is arranged on the side of the auxiliary body 4 close to the turntable 2, and provides support for the turntable 2 by resisting the outer edge of the turntable 2. In this way, the turntable 2 can be reduced from falling and deviating due to gravity, and the insertion and wear between the workpieces with precise matching of the front and rear molds can be reduced, thereby effectively maintaining the normal service life of the mold.

[0054] Specifically, the auxiliary body 4 and the bottom plate 1 can be connected by sliding components; in this embodiment, the sliding component adopts a matching structure of a linear bearing 51 and a guide column 52, wherein the linear bearing 51 is installed on the auxiliary body 4, one end of the guide column 52 is fixed on the bottom plate 1 and the other end is slidably arranged in the linear bearing 51; in addition, the installation positions of the linear bearing 51 and the guide column 52 can also be relatively adjusted. In other embodiments, the sliding component can also adopt a matching structure of a linear guide rail and a slider to achieve a sliding connection between the auxiliary body 4 and the bottom plate 1, which will not be repeated here.

[0055] The synchronous motion structure 6 is used to realize the synchronous motion between the auxiliary body 4 and the turntable 2. Figure 3 and Figure 4 In this embodiment, a clamping method is adopted to make the auxiliary body 4 move along with the movement of the turntable 2, so as to achieve the synchronization of the movement of the two.

[0056] Specifically, the synchronous motion structure 6 includes a first clamping block 61 and a second clamping block 62, which are arranged along the thickness direction of the turntable 2 to form a gap, and the outer periphery of the turntable 2 is embedded in the gap, so that the first clamping block 61 and the second clamping block 62 form a clamping effect on the outer periphery of the turntable 2. At the same time, for the convenience of description, in this embodiment, the one of the first clamping block 61 and the second clamping block 62 that is far away from the bottom plate 1 is called the first clamping block 61, and the other is called the second clamping block 62.

[0057] Because the turntable 2 itself needs to be driven to rotate, the turntable 2 will move relative to the first clamping block 61 and the second clamping block 62; in the present embodiment, in order to reduce the wear caused by the rotation of the turntable 2, an anti-wear abutment member is provided on the side wall of the first clamping block 61 for the end face of the turntable 2 to abut against, and the distance between the second clamping block 62 and the anti-wear abutment member is slightly larger than the thickness of the turntable 2, so that there is a gap between the outer periphery of the turntable 2 and the interval in the direction of its own thickness.

[0058] Thus, when the turntable 2 is driven away from the bottom plate 1, it will keep in contact with the anti-wear abutment member on the first clamping block 61, and form a gap with the side wall of the second clamping block 62, so as to effectively reduce the wear between the first clamping block 61 and the turntable 2, and between the second clamping block 62 and the turntable 2 during the rotation of the turntable 2. Specifically, the anti-wear abutment member can be a wear-resistant graphite block 63 fixed to the side wall of the first clamping block 61, or a abutment ball 64 movably embedded in the side wall of the first clamping block 61, or a combination of the wear-resistant graphite block 63 and the abutment ball 64; at the same time, the material of the wear-resistant graphite block 63 referred to in the present application is a combination of bronze and graphite, and has good rigidity and self-lubricating properties, and a wear-resistant graphite block 63 with similar properties can also be used.

[0059] The support structure provides support for the turntable 2 by contacting the outer edge of the turntable 2. Figure 3 and Figure 4 In this embodiment, the support structure includes a support roller 7 rotatably connected to the auxiliary body 4, and the rotation axis of the support roller 7 is parallel to the rotation axis of the turntable 2, so that during the rotation of the turntable 2, the support roller 7 will also rotate relatively, thereby effectively reducing the wear caused by relative displacement between the support roller 7 and the turntable 2. At the same time, the support roller 7 is made of rigid material and has no rubber material on the surface, providing a good and stable support force for the turntable 2 through a rigid contact method.

[0060] In this embodiment, there are two support rollers 7, which are arranged at intervals; at the same time, both ends of the support roller 7 are connected to the auxiliary body 4 by bearings for rotation, and correspondingly, a rotation matching groove 41 adapted to the support roller 7 is formed on the auxiliary body 4. In addition, in order to maintain a stable connection between the support roller 7 and the auxiliary body 4, the bearing and the auxiliary body 4 are tightly matched, and a clamping ring for limiting the position of the bearing is provided at both ends of the support roller 7.

[0061] The implementation principle of the embodiment of the present application is: when the turntable 2 is driven away from the base plate 1 and is separated from the positioning effect of the positioning column 11, the first clamping block 61 and the second clamping block 62 cooperate to form a clamping effect on the outer periphery of the turntable 2, so that the auxiliary body 4 and the turntable 2 can move synchronously.

[0062] At the same time, during the synchronous movement of the auxiliary body 4 and the turntable 2, the support roller 7 is used to provide support for the turntable 2, thereby reducing the turntable 2 from falling and deviating due to gravity, and during the rotation of the turntable 2, the support roller 7 will also rotate relatively, thereby reducing the wear between the support roller 7 and the turntable 2 due to relative displacement. Finally, the stable working state of the turntable 2 is maintained, and the insertion and wear between the workpieces with precise matching of the front and rear molds are reduced, thereby effectively maintaining the normal service life of the mold.

[0063] Example 2

[0064] The difference between this embodiment and the first embodiment is that the relevant structural arrangement in the synchronous motion structure 6 for reducing the wear caused by the rotation of the turntable 2 is different.

[0065] Reference Figure 5 The side walls opposite to the first clamp block 61 and the second clamp block 62 are both provided with anti-wear abutment members for the end surface of the turntable 2 to abut against, and the anti-wear abutment members include one or a combination of a wear-resistant graphite block 63 and abutment balls 64. In this embodiment, the side wall of the first clamp block 61 is provided with a wear-resistant graphite block 63, and the side wall of the second clamp block 62 is provided with abutment balls 64.

[0066] This can reduce the wear caused by direct contact between the turntable 2 and the first clamping block 61 and the second clamping block 62 during the rotation process. At the same time, the two end faces of the turntable 2 that are separated from each other will abut against the anti-wear abutment member, so that the synchronous movement displacement of the auxiliary body 4 and the turntable 2 is consistent, reducing the wear caused by relative displacement between the turntable 2 and the supporting structure, thereby reducing the support effect, and effectively maintaining a good support effect.

[0067] Example 3

[0068] The difference between this embodiment and embodiment 1 is that the supporting structure is different.

[0069] Specifically, in this embodiment, the supporting structure includes supporting balls movably embedded in the auxiliary body 4. In addition to reducing the wear of the turntable 2 and the supporting balls during the rotation of the turntable 2, it can also reduce the wear between the turntable 2 and the supporting balls due to relative displacement when the turntable 2 approaches or moves away from the base plate 1.

[0070] Example 4

[0071] The difference between this embodiment and embodiment 1 is that the synchronous motion structure 6 is different.

[0072] Specifically, in this embodiment, the synchronous motion structure 6 includes a transmission member and a driving member; one end of the transmission member is connected to the auxiliary body 4, and the other end is connected to the output end of the driving member; thus, the driving member drives the transmission member to move, so as to achieve the purpose of making the auxiliary body 4 and the turntable 2 move synchronously. Compared with the clamping method, the wear on the turntable 2 can be further reduced.

[0073] Meanwhile, in this embodiment, the sliding mode between the auxiliary body 4 and the bottom plate 1 can be specifically set as follows: the linear bearing 51 is mounted on the bottom plate 1, one end of the guide column 52 is fixed to the auxiliary body 4, and the other end slides through the linear bearing 51. Moreover, the end of the guide column 52 that penetrates the linear bearing 51 also penetrates the bottom plate 1 and is connected to the driving structure for driving the rotating shaft 3 to move axially.

[0074] That is, it is equivalent to using the guide column 52 as the transmission member in the synchronous motion structure 6, and using the driving structure for driving the axial movement of the rotating shaft 3 as the driving member in the synchronous motion structure 6; thus, there is no need to add an additional power source to achieve the purpose of making the auxiliary body 4 and the turntable 2 move synchronously.

[0075] In a second aspect, an embodiment of the present application also discloses a turntable module.

[0076] Reference Figure 2 and Figure 6 The turntable module comprises a base plate 1, a turntable 2 mounted on the base plate 1 and the auxiliary mechanism for the mold turntable. The turntable 2 is connected to the base plate 1 by a rotating shaft 3 that can move radially, so that the turntable 2 can be driven to move closer to or farther from the base plate 1, and can also be driven to rotate relative to the base plate 1.

[0077] At the same time, the auxiliary mechanism for the mold turntable is set at a height lower than the rotation center of the turntable 2, and multiple groups can be set; in the present embodiment, only one group of auxiliary mechanisms is set and is located directly below the rotation center of the turntable 2, which is convenient for directly providing support for the turntable 2, and also convenient for adaptive adjustment of the size of the supporting force during the actual installation process.

[0078] In other embodiments, the auxiliary mechanisms may be arranged in 2n groups or 2n+1 groups; wherein n is an integer and n≥1. Specifically, when the auxiliary mechanisms are arranged in 2n groups, the auxiliary mechanisms are divided into two parts and are symmetrically arranged on both sides of the vertical perpendicular line of the rotation center of the turntable 2. When the auxiliary mechanisms are arranged in 2n+1 groups, one group of the auxiliary mechanisms is arranged directly below the rotation center of the turntable 2, and the remaining auxiliary mechanisms are divided into two parts and are symmetrically arranged on both sides of the vertical perpendicular line of the rotation center of the turntable 2.

[0079] In a third aspect, an embodiment of the present application also discloses an injection molding machine.

[0080] Specifically, the injection molding machine includes a fixed mold plate and the above-mentioned turntable module, and the turntable 2 is installed with one of the male mold and the female mold, and the fixed mold plate is installed with the other of the male mold and the female mold.

[0081] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An auxiliary mechanism for a mold turntable, characterized in that: include: An auxiliary body (4) is slidably connected to the bottom plate (1), and a sliding direction of the auxiliary body (4) relative to the bottom plate (1) is parallel to a moving direction of the turntable (2) relative to the bottom plate (1); A synchronous motion structure (6) for driving the auxiliary body (4) and the rotating disk (2) to move synchronously; A supporting structure is arranged on the auxiliary body (4) and is used to support the turntable (2).

2. The auxiliary mechanism for the mold turntable according to claim 1, characterized in that: The synchronous motion structure (6) comprises a first clamping block (61) and a second clamping block (62), wherein the first clamping block (61) and the second clamping block (62) are arranged along the thickness direction of the turntable (2) to form a gap, and the gap is used for the outer peripheral edge of the turntable (2) to be embedded.

3. The auxiliary mechanism for the mold turntable according to claim 2, characterized in that: An anti-wear abutment member is provided on the side wall of one of the first clamping block (61) and the second clamping block (62) which is away from the bottom plate (1) for abutting against the end face of the turntable (2), and the distance between the other side wall and the anti-wear abutment member is greater than the thickness of the turntable (2).

4. The auxiliary mechanism for the mold turntable according to claim 2, characterized in that: The opposite side walls of the first clamping block (61) and the second clamping block (62) are both provided with anti-wear abutment members for the end surface of the rotating disk (2) to abut against.

5. The auxiliary mechanism for the mold turntable according to claim 3 or 4, characterized in that: The anti-wear and abutment member comprises a wear-resistant graphite block (63) and / or a abutment ball (64).

6. The auxiliary mechanism for the mold turntable according to claim 1, characterized in that: The synchronous motion structure (6) comprises a transmission member and a driving member, one end of the transmission member is connected to the auxiliary body (4), and the other end is connected to the output end of the driving member; the driving member is used to drive the transmission member to move.

7. The auxiliary mechanism for the mold turntable according to claim 1, characterized in that: The support structure comprises a support roller (7) rotatably connected to the auxiliary body (4), and the rotation axis of the support roller (7) is parallel to the rotation axis of the turntable (2).

8. The auxiliary mechanism for the mold turntable according to claim 1, characterized in that: The supporting structure comprises supporting balls movably embedded in the auxiliary body (4).

9. A turntable module, comprising a base plate (1) and a turntable (2) mounted on the base plate (1), characterized in that: It also comprises an auxiliary mechanism for the mold turntable according to any one of claims 1 to 8.

10. An injection molding machine, characterized in that: It comprises a fixed mold plate and the turntable module as claimed in claim 9.

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