Rotating device of rotating disc type injection molding machine

Abstract

The utility model relates to the technical field of rotating systems of injection molding machines, in particular to a rotating device of a rotating disc type injection molding machine, the injection molding machine comprises a movable plate and a rotating device, the rotating device comprises a rotating disc rotatably mounted on the movable plate, a rotating shaft assembly is arranged on the rotating disc, the rotating shaft assembly comprises a main shaft, and the main shaft is rotatably mounted on the movable plate. A rotating shaft connecting plate used for being fixedly connected with the rotating disc is fixedly arranged at one end of the main shaft, and a first bearing and a second bearing are fixedly installed in the movable plate. According to the rotating device, the rotating shaft is stably connected with the rotating disc through the rotating shaft connecting plate, the mounting stability of the rotating disc is improved, the rotating shaft is mounted on the two bearings, the stability of the rotating shaft is improved, rotation is smooth, the working performance requirement of the injection molding machine can be met, and the rotating disc is positioned through the matching block, so that the in-place precision of the rotating disc is improved; the service life of the turntable is prolonged, the overall abrasion is small, the turntable does not roll during mold closing, and the mold closing precision of the mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machine rotation systems, in particular to a rotation device for a turntable type injection molding machine. Background Art

[0002] In the actual processing process, the rotary table injection molding machine is mostly used for two-color injection molding. The rotary table two-color machine realizes the transposition and pairing of the mold cavity through the rotation of the turntable to realize the production of two-color or multi-color products, and the rotation system is the core of the injection molding machine.

[0003] In the prior art, the name disclosed in the application number: CN2020227696667 is: a turntable device, which includes a base, a rotating shaft core, a rotating disk and a bearing assembly; the rotating disk is fixedly connected to the rotating shaft core; the axial direction of the rotating shaft core is arranged along the up and down directions, and the rotating shaft core is provided with a load-bearing part, and the load-bearing part is in the shape of a cone that is wide at the top and narrow at the bottom; the bearing assembly is installed on the base, and the bearing assembly is provided with a load-bearing bearing, and the shape of the inner ring of the load-bearing bearing is consistent with the shape of the load-bearing part, and the load-bearing part is coaxially installed on the inner side of the load-bearing bearing.

[0004] However, in the prior art, such as the turntable device mentioned in application number: CN2020227696667, the rotating shaft core of the turntable is a conical structure to reduce axial force wear. When used on a turntable two-color injection molding machine, the turntable is prone to tilting, which reduces the mold matching accuracy on the turntable. Therefore, a rotating device for a turntable injection molding machine is designed. Utility Model Content

[0005] The utility model aims to provide a rotating device for a turntable type injection molding machine to solve the problems in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A rotating device of a turntable type injection molding machine, the injection molding machine comprises a moving plate and a rotating device, the rotating device comprises a turntable rotatably mounted on the moving plate;

[0008] The turntable is provided with a rotating shaft assembly, which includes a main shaft, which is rotatably mounted on the moving plate, and a rotating shaft connecting plate for fixedly connecting the turntable is fixedly provided at one end of the main shaft, and bearings 1 and 2 are fixedly installed in the moving plate.

[0009] Furthermore, a turntable limiting device and a turntable auxiliary component are provided on the side of the turntable. The turntable limiting device array is arranged on the moving plate, and the turntable auxiliary component is symmetrically arranged on the moving plate. A turntable driving device is fixedly mounted on the moving plate. A matching groove is opened on the side of the turntable, and a positioning device is fixedly provided on the moving plate.

[0010] Furthermore, the positioning device includes a driving component and a matching block, the output end of the driving component is fixedly connected to the matching block, and the matching block matches with the matching groove.

[0011] Furthermore, the turntable is provided with a connecting groove for installing a rotating shaft connecting plate, a diverter device is fixedly connected to the end of the main shaft away from the turntable, a bearing back cover is fixedly provided on one side of the diverter device, bearing one is located in the moving plate and close to the side of the diverter device, and bearing two is located in the moving plate and close to the side of the turntable.

[0012] Furthermore, the bearing one and the bearing two are both installed on the main shaft, a protrusion is fixedly provided on the main shaft, the protrusion is rotatably arranged on the side of the bearing two close to the turntable, and a bearing pressure cover for fixing the bearing two is provided on the outer side of the protrusion.

[0013] Furthermore, the inner diameters of the bearing one and the bearing two are the same, but the outer diameters are different, and a rotating sealing ring for dust prevention is fixedly installed in the bearing gland.

[0014] Beneficial effects of the utility model:

[0015] 1. The rotating device of the utility model stably connects the rotating shaft and the turntable through the rotating shaft connecting plate, thereby improving the installation stability of the turntable. The rotating shaft is installed on two bearings, thereby improving the stability of the rotating shaft and rotating smoothly, which can meet the working performance requirements of the injection molding machine;

[0016] 2. The utility model has a rotating device, and the turntable is positioned by a matching block, which improves the positioning accuracy of the turntable, increases the service life of the turntable, reduces overall wear, and has no side tilt of the turntable during mold closing, thereby improving the mold closing accuracy of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the turntable structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the rotating shaft assembly of the utility model;

[0020] Figure 3 This utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 This utility model Figure 2 Enlarged structural diagram at B in the middle. DETAILED DESCRIPTION

[0022] 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 embodiments 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.

[0023] A rotating device for a turntable type injection molding machine, such as Figure 1 As shown, the injection molding machine includes a movable plate 1 and a rotating device, the rotating device includes a turntable 2 rotatably mounted on the movable plate 1, a turntable limiting device 3 and a turntable auxiliary component 6 are arranged on the side of the turntable 2, an array of turntable limiting devices 3 are fixedly arranged on the movable plate 1, the turntable limiting device 3 is used to limit the turntable 2, a turntable driving device 7 is fixedly installed on the movable plate 1, a matching groove 21 is opened on the side of the turntable 2, and a positioning device 5 is fixedly arranged on the movable plate 1.

[0024] In this embodiment, a symmetrically distributed turntable auxiliary component 6 is provided on the movable plate 1. The turntable auxiliary component 6 abuts against the side of the turntable 2 to limit the protruding stroke of the turntable 2 and protect the safety of the mold. It can also stabilize the rotation of the turntable 2 in the same plane, thereby improving the rotation stability of the turntable 2.

[0025] The positioning device 5 is composed of a driving component and a matching block. The driving component includes a cylinder and a hydraulic cylinder. The matching block is fixedly installed at the output end of the driving component. The power of the driving component is used to move the matching block to match the matching groove 21, thereby improving the positioning accuracy of the turntable 2 and preventing the turntable from reversing after it is in place.

[0026] In this embodiment, the turntable driving device 7 includes an electric motor and a hydraulic motor. The output end of the turntable driving device 7 is fixedly connected to a gear, and the gear cooperates with the ring gear set on the turntable 2 to drive and control the turntable 2 to rotate.

[0027] like Figure 2-3 As shown, a rotating shaft assembly 4 is provided on the turntable 2, and the rotating shaft assembly 4 includes a main shaft 48, which is rotatably installed on the moving plate 1, and a rotating shaft connecting plate 47 is fixedly provided at one end of the main shaft 48, and a connecting groove is opened on the turntable 2, and the rotating shaft connecting plate 47 is installed in the connecting groove and fixedly connected to the main shaft 48, and an arc surface is provided at the connection between the main shaft 48 and the rotating shaft connecting plate 47.

[0028] In this embodiment, the shaft connecting plate 47 fixes the turntable 2 to achieve large end surface contact between the turntable 2 and the main shaft 48, reducing the relative angle deviation caused by the gap value, and the shaft connecting plate 47 can also serve as a diversion block or a pressure block of the diversion pipeline.

[0029] The other end of the main shaft 48 is fixedly connected to the diverter device 41. Part of the pipeline of the diverter device 41 passes through the inner hole of the main shaft 48 and is connected to the shaft connecting plate 47, and then connected to the turntable surface. Under the premise of ensuring the rigidity of the shaft, increasing the inner hole of the shaft as much as possible can increase the number of diverter groups.

[0030] A bearing rear cover 42 is fixedly provided on one side of the diverter device 41. The bearing rear cover 42 is sleeved and installed on the outside of the main shaft 48 and fixedly installed on one side of the moving plate 1. The other side of the moving plate 1 is used to assemble the turntable 2. Bearing 1 43 and bearing 2 45 are fixedly installed in the moving plate 1. Bearing 1 43 is located in the moving plate 1 and close to the side of the diverter device 41. Bearing 2 45 is located in the moving plate 1 and close to the side of the turntable 2.

[0031] Bearing 1 43 and bearing 2 45 are installed on the main shaft 48 at the same time. A protrusion 49 is fixed on the main shaft 48. The protrusion 49 is rotatably located on the side of bearing 2 45 close to the turntable 2, and a bearing pressure cover 46 is provided on the outer side of the protrusion 49. The bearing pressure cover 46 fixes bearing 2 45 and is tightly connected to the moving plate 1.

[0032] In this embodiment, bearing 1 43 and bearing 2 45 have the same inner diameter and different outer diameters. Bearing 1 43 and bearing 2 45 are roller bearings or small clearance needle bearings. When the main shaft 48 and the turntable 2 carry a large mold, the roll angle and vertical displacement value of the main shaft 48 and the turntable 2 can be reduced, and the axial distance between the two can be ensured.

[0033] In this embodiment, a rotating sealing ring is fixedly installed in the bearing cover 46 to prevent foreign matter from entering the bearing 2 45 .

[0034] Here’s how it works:

[0035] During the actual installation process, the design of the same inner diameter of bearing 1 43 and bearing 2 45 can ensure that the main shaft 48 with the same diameter is used for installation. The different outer diameters of bearing 1 43 and bearing 2 45 can be installed from front to back during the installation of the main shaft 48 to avoid the situation where the inner ring of the rear end bearing is small, which causes the inner hole of the rotating shaft 48 to become smaller.

[0036] After the bearing cover 46 is installed, the bearing 2 45 is limited, and the installation of the bearing rear cover 42 fixes the bearing 1 43 to ensure the stability of the two bearings, further improve the grip stability of the main shaft 48, and at the same time reduce the inclination angle and vertical displacement value of the main shaft when the load is large.

[0037] The rotating shaft assembly 4 has a simple structure, wherein the inner hole size of the main shaft 48 is enlarged, which can increase the number of flow distribution device groups required to meet the actual production requirements of the injection molding machine.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A rotating device for a turntable type injection molding machine, the injection molding machine comprising a moving plate (1) and a rotating device, characterized in that: The rotating device comprises a rotating disk (2) rotatably mounted on the moving plate (1); The rotating disk (2) is provided with a rotating shaft assembly (4), the rotating shaft assembly (4) comprising a main shaft (48), the main shaft (48) being rotatably mounted on the moving plate (1), and a rotating shaft connecting plate (47) for fixedly connecting the rotating disk (2) is fixedly mounted on one end of the main shaft (48), and a bearing 1 (43) and a bearing 2 (45) are fixedly mounted inside the moving plate (1).

2. The rotating device of a turntable type injection molding machine according to claim 1, characterized in that: The side of the turntable (2) is provided with a turntable limiting device (3) and a turntable auxiliary component (6); the turntable limiting device (3) is arranged in an array on the movable plate (1); the turntable auxiliary component (6) is symmetrically arranged on the movable plate (1); a turntable driving device (7) is fixedly mounted on the movable plate (1); a matching groove (21) is opened on the side of the turntable (2); and a positioning device (5) is fixedly arranged on the movable plate (1).

3. The rotating device of a turntable type injection molding machine according to claim 2, characterized in that: The positioning device (5) comprises a driving component and a matching block, wherein the output end of the driving component is fixedly connected to the matching block, and the matching block matches with the matching groove (21).

4. The rotating device of a turntable type injection molding machine according to claim 1, characterized in that: The turntable (2) is provided with a connecting groove for mounting a rotating shaft connecting plate (47); a flow divider (41) is fixedly connected to one end of the main shaft (48) away from the turntable (2); a bearing rear cover (42) is fixedly provided on one side of the flow divider (41); a first bearing (43) is located in the moving plate (1) and close to the flow divider (41); and a second bearing (45) is located in the moving plate (1) and close to the turntable (2).

5. The rotating device of a turntable type injection molding machine according to claim 4, characterized in that: The bearing 1 (43) and the bearing 2 (45) are both mounted on a main shaft (48). A convex block (49) is fixedly mounted on the main shaft (48). The convex block (49) is rotatably mounted on a side of the bearing 2 (45) close to the turntable (2). A bearing pressure cover (46) for fixing the bearing 2 (45) is disposed on the outer side of the convex block (49).

6. The rotating device of a turntable type injection molding machine according to claim 5, characterized in that: The inner diameters of the bearing 1 (43) and the outer diameters of the bearing 2 (45) are the same, and the outer diameters are different. A rotating sealing ring for dust prevention is fixedly installed in the bearing cover (46).

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