Turntable support device

Abstract

The present invention discloses a turntable support device, which includes a support base, a support pressure plate, two T-shaped support sliders, and two support rollers. The front end of the support base is symmetrically provided with two grooves, and the top of the support pressure plate is symmetrically provided with two notches downward, the width of the notches is smaller than the width of the grooves, the support pressure plate is fixed to the front end of the support base, the notches are connected with the corresponding grooves to form a T-slot, the rear end of the T-shaped support slider is tightly embedded in the T-slot, the support roller is connected to the front of the T-shaped support slider, the support roller is located in front of the support pressure plate, and an adjusting screw is vertically penetrated on the support pressure plate below the notch, the top of the adjusting screw abuts against the bottom end surface of the rear end of the T-shaped support slider, the support base is fixed on the dynamic template of the injection molding machine, the support roller is in linear contact with the turntable of the injection molding machine, and the support roller and the T-shaped support slider are fixedly locked to the support base; the advantage is that its position adjustment is convenient and the impact resistance is strong.

Description

Technical Field

[0001] The invention relates to a turntable supporting technology, in particular to a turntable supporting device used in a turntable type multi-component injection molding machine. Background Art

[0002] The turntable multi-component injection molding machine includes a movable platen and a turntable mounted on the movable platen. The turntable is driven to rotate by a motor or an electric motor and is loaded with a load. However, when the load is heavy, the turntable will tilt downward, that is, the upper part of the turntable will tilt outward and the lower part will stick inward. In this way, the turntable will rub against the movable platen, which will not only damage the turntable and the movable platen, but also cause the turntable to malfunction, ultimately causing the turntable multi-component injection molding machine to malfunction.

[0003] To address these issues, a turntable support device has been introduced into turntable-type multi-component injection molding machines. This device ensures the turntable can function properly even when loaded with heavy loads. Existing turntable support devices include a T-shaped slide and two support rollers. The T-shaped slide is provided with two mounting shafts, and the support rollers are mounted on the mounting shafts via bearings. Two to three T-slots are defined on the movable plate below the turntable. A turntable support device is then placed in each T-slot. The T-slide is then adjusted so that the support rollers are in linear contact with the turntable, thereby supporting the turntable. After the T-slide is adjusted, it is bolted to the T-slot. However, this turntable support device has the following problems: 1) Since the two supporting rollers are installed on the same T-shaped slide, when the position of the T-shaped slide is adjusted, the positions of the two supporting rollers will also change. In order to ensure that both supporting rollers can contact the turntable line, multiple position adjustments are required, which brings great difficulty to the adjustment; 2) The T-shaped slide is located in the T-slot, and the supporting rollers need to contact the turntable line. Such a structure results in a long installation force arm of the supporting rollers, thereby resulting in weak impact resistance of the entire turntable support device; 3) The T-shaped slide is fixed in the T-slot by bolt connection, which is very easy to cause the bolts to loosen, and when the bolts are loose, the position of the supporting rollers will inevitably shift. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a turntable supporting device, which is convenient for position adjustment and has strong impact resistance.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a turntable support device, characterized by comprising a support base, a support pressure plate, two T-shaped support sliders, and two support rollers, wherein the front end of the support base is symmetrically provided with two independent grooves, the top of the support pressure plate is symmetrically provided with two independent notches downwardly, the width of the notches is smaller than the width of the grooves, the support pressure plate is fixed to the front end of the support base, the notches are connected with the corresponding grooves to form a T-slot, the rear portion of the T-shaped support slider is tightly embedded in the T-slot, the support roller is rollingly connected to the front portion of the T-shaped support slider, the support roller is located in front of the support pressure plate, an adjustment screw is vertically provided on the support pressure plate below the notch, the top of the adjustment screw abuts against the bottom end surface of the rear portion of the T-shaped support slider, the support base is fixed to the movable plate of the injection molding machine, the support roller is in linear contact with the turntable of the injection molding machine, and the support roller and the T-shaped support slider are fixedly locked to the support base.

[0006] The T-shaped support slider consists of a T-shaped sliding portion at the rear and a connecting shaft at the front. The T-shaped sliding portion is tightly embedded in the T-slot, and the connecting shaft is located in front of the support plate. Since the support roller needs to be connected to the front of the T-shaped support slider, the front of the T-shaped support slider needs to be a shaft, namely the connecting shaft.

[0007] The front end surface of the transverse portion of the T-shaped sliding portion is in close contact with the rear end surface of the support plate, and the rear end surface of the transverse portion of the T-shaped sliding portion is in close contact with the bottom of the groove. That is, the transverse portion of the T-shaped sliding portion is clamped by the bottom of the groove and the rear end surface of the support plate, thereby ensuring the stability of the T-shaped support slider and the support roller.

[0008] The supporting roller is connected to the connecting shaft via a bearing, a retaining spring and a bearing retaining ring. The connection method among the supporting roller, the bearing, the retaining spring, the bearing retaining ring and the connecting shaft adopts the existing technology.

[0009] An axial through hole is provided in the T-shaped support slider along the central axis of the connecting shaft, and a threaded fixing hole is provided on the support base at a position corresponding to the axial through hole. The axial through hole is 1.5 to 2.5 mm larger than the threaded fixing hole on one side. After adjusting the T-shaped support slider by the adjusting screw so that the support roller is in linear contact with the turntable of the injection molding machine, a first hexagon socket screw is passed through the inner hole of the bearing retaining ring and the axial through hole and then screwed to the threaded fixing hole to lock the support roller and the T-shaped support slider to the support base. Since the central axis of the axial through hole and the central axis of the threaded fixing hole are not in the same straight line after fine-tuning the position of the T-shaped support slider, in order to lock the support roller and the T-shaped support slider to the support base, the aperture of the axial through hole is designed to be larger than the aperture of the threaded fixing hole. Through a large number of experiments and fine-tuning after rough adjustment, it is sufficient to design the aperture of the axial through hole to be 3 to 5 mm larger than the aperture of the threaded fixing hole.

[0010] The notch is aligned with the center of the groove.

[0011] The adjusting screw is a hexagonal flat-end set screw. Two adjusting screws are vertically penetrated on the support pressure plate below the notch. The adjusting screw is threaded with a hexagonal nut, and the hexagonal nut contacts the bottom end surface of the support pressure plate.

[0012] There is a gap between the supporting roller and the supporting pressing plate, which avoids friction between the supporting roller and the supporting pressing plate and damage to the supporting roller and the supporting pressing plate.

[0013] The support base is secured to the dynamic platen of the injection molding machine via a second hexagon socket screw and an internally threaded cylindrical pin. This secure connection between the support base and the dynamic platen prevents loosening and provides a very stable and secure attachment, enhancing the turntable support device's impact resistance.

[0014] The internal thread cylindrical pin is located below the T-shaped supporting slider in the vertical direction.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1) The two support rollers are individually mounted on the front of two independent T-shaped support sliders. The position of each T-shaped support slider can be fine-tuned by adjusting the screw so that the support roller mounted on the front of the T-shaped support slider is in linear contact with the turntable. This individual adjustment method eliminates the need for multiple position adjustments, greatly improving the convenience of adjusting the support roller position.

[0017] 2) The T-shaped support slider is not directly connected to the movable platen, but the support base is directly connected to the movable platen. By adding the support base, the installation arm of the support roller is greatly shortened, thereby improving the impact resistance of the turntable support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the turntable supporting device of the present invention;

[0019] Figure 2 It is a schematic diagram of the exploded structure of the turntable support device of the present invention;

[0020] Figure 3 It is a schematic cross-sectional structural diagram of the turntable support device of the present invention, cut along the axial direction of one of the support rollers;

[0021] Figure 4 The figure is a schematic structural diagram of two turntable support devices of the present invention installed on a movable platen of a turntable multi-component injection molding machine. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] A turntable support device proposed by the present invention, as shown in the figure, is suitable for a turntable multi-component injection molding machine, which includes a support base 1, a support pressure plate 2, two T-shaped support sliders 3, and two support rollers 4. The front end of the support base 1 is symmetrically provided with two independent grooves 11, so that the transverse cross-section of the support base 1 is a "mountain"-shaped structure. The top of the support pressure plate 2 is symmetrically provided with two independent notches 21 downwardly and left and right, so that the longitudinal cross-section of the support pressure plate 2 is a "mountain"-shaped structure. The width of the notch 21 is smaller than the width of the groove 11. The support pressure plate 2 is fixed to the front end of the support base 1 by 8 third hexagon socket screws 22. The notch 21 is connected to the corresponding groove 11 and the notch 21 is aligned with the center of the groove 11 to form a structure. T-slot 5, the rear part of the T-support slider 3 is tightly embedded in the T-slot 5 from top to bottom, the support roller 4 is rollingly connected to the front part of the T-support slider 3, the support roller 4 is located in front of the support pressure plate 2, and an adjusting screw 61 is vertically penetrated below the notch 21 on the support pressure plate 2, and the top of the adjusting screw 61 abuts against the bottom end surface of the rear part of the T-support slider 3, the support base 1 is fixed on the dynamic template 91 of the injection molding machine, and is located below the turntable 92 of the injection molding machine, and the support roller 4 is made to contact with the turntable 92 of the injection molding machine as much as possible, adjust the adjusting screw 61 to fine-tune the position of the support roller 4 so that the support roller 4 is in linear contact with the turntable 92 of the injection molding machine, and the support roller 4 and the T-support slider 3 are fixedly locked to the support base 1.

[0024] In this embodiment, the T-shaped support slider 3 consists of a T-shaped sliding portion 31 at the rear and a connecting shaft 32 at the front. The T-shaped sliding portion 31 is tightly embedded in the T-slot 5, and the connecting shaft 32 is located in front of the support plate 2. Because the support roller 4 needs to be connected to the front of the T-shaped support slider 3, the front of the T-shaped support slider 3 must be a shaft, namely the connecting shaft 32.

[0025] In this embodiment, the front end face of the transverse portion 311 of the T-shaped sliding portion 31 is in close contact with the rear end face of the support pressure plate 2, and the rear end face of the transverse portion 311 of the T-shaped sliding portion 31 is in close contact with the bottom of the groove 11, so that the transverse portion 311 of the T-shaped sliding portion 31 is clamped by the bottom of the groove 11 and the rear end face of the support pressure plate 2, ensuring the stability of the T-shaped support slider 3 and the support roller 4, and the vertical portion 312 of the T-shaped sliding portion 31 is adapted to the notch 21.

[0026] In this embodiment, the support roller 4 is connected to the connecting shaft 32 through a bearing 71, a retaining spring 72, and a bearing retaining ring 73. The connection method between the support roller 4, the bearing 71, the retaining spring 72, the bearing retaining ring 73 and the connecting shaft 32 adopts the existing technology, specifically: the bearing 71 is sleeved on the connecting shaft 32, the support roller 4 is installed on the bearing 71, the retaining spring 72 is embedded in the inner wall of the support roller 4 to limit the bearing 71, and the bearing retaining ring 73 is arranged on the end of the connecting shaft 32 to limit the bearing 71.

[0027] In this embodiment, an axial through hole 33 is opened in the T-shaped support slider 3 along the central axis of the connecting shaft 32, and a threaded fixing hole 12 is opened at a position corresponding to the axial through hole 33 on the support base 1. The axial through hole 33 is larger than the threaded fixing hole 12 by about 1.5 to 2.5 mm on one side. The adjusting screw 61 adjusts the T-shaped support slider 3 so that the support roller 4 is in line contact with the turntable 92 of the injection molding machine. After that, the first hexagon socket screw 34 is passed through the inner hole of the bearing retaining ring 73, the axial through hole 33, and then screwed to the threaded fixing hole 12 to lock the support roller 4 and the T-shaped support slider 3 on the support base 1. Since the center axis of the axial through hole 33 and the center axis of the threaded fixing hole 12 are not in the same straight line after the position of the T-shaped support slider 3 is fine-tuned, in order to lock the support roller 4 and the T-shaped support slider 3 on the support base 1, the aperture of the axial through hole 33 is designed to be larger than the aperture of the threaded fixing hole 12. Through a large number of experiments, after rough adjustment and then fine adjustment, it is sufficient to design the aperture of the axial through hole 33 to be 3 to 5 mm larger than the aperture of the threaded fixing hole 12.

[0028] In this embodiment, the adjusting screw 61 is a hexagonal flat-end set screw. Two adjusting screws 61 are vertically penetrated below the notch 21 on the support pressure plate 2. A hexagonal nut 62 is threadedly connected to the adjusting screw 61, and the hexagonal nut 62 contacts the bottom end surface of the support pressure plate 2.

[0029] In this embodiment, there is a gap 42 between the supporting roller 4 and the supporting plate 2 , which prevents the supporting roller 4 and the supporting plate 2 from being damaged by friction therebetween.

[0030] In this embodiment, four second hexagon socket screws 13 and one internally threaded cylindrical pin 14 are horizontally arranged at the bottom of each groove 11. The support base 1 is secured to the movable platen 91 of the injection molding machine via these eight second hexagon socket screws 13 and two internally threaded cylindrical pins 14. The internally threaded cylindrical pins 14 are vertically positioned below the T-shaped support slider 3. The cooperation of the second hexagon socket screws 13 and internally threaded cylindrical pins 14 ensures a secure connection between the support base 1 and the movable platen 91 of the injection molding machine. This prevents loosening and provides a very secure and stable attachment, enhancing the impact resistance of the turntable 92 support device.

[0031] Generally, two supporting rollers are used as a group in the design, that is, the turntable supporting device has two supporting rollers. Of course, it can also be designed to have only one supporting roller or more than two supporting rollers. The structure with more than two supporting rollers will have certain difficulties in adjustment.

[0032] In actual design, the T-shaped supporting slider 3 can be designed into other shapes, that is, the rear part of the T-shaped supporting slider 3, namely the T-shaped sliding part 31, can be designed into other shapes, and the T-shaped slot 5 can be designed into a shape that is compatible with the T-shaped sliding part 31, ensuring that the sliding part and the slot are tightly fitted. In this embodiment, the matching structure of the T-shaped sliding part 31 and the T-shaped slot 5 is stable.

Claims

1. A turntable support device, characterized in that The top of the support plate is provided with a plurality of independent grooves, and the top of the support plate is symmetrically provided with two independent notches, and the width of the notch is smaller than the width of the notch. The support pressure plate is fixed to the front end of the support base, and the notch is connected with the corresponding groove to form a T-slot. The rear end of the T-shaped support slider is tightly embedded in the T-slot, and the support roller is rollingly connected to the front of the T-shaped support slider. The support roller is located in the front of the support pressure plate, and an adjusting screw is vertically penetrated on the support pressure plate below the notch, and the top of the adjusting screw abuts the bottom end surface of the rear end surface of the T-shaped support slider. The support base is fixed to the dynamic template of the injection molding machine, the support roller is in linear contact with the turntable of the injection molding machine, and the support roller and the T-shaped support slider are fixedly locked to the support base; The T-shaped support slider is composed of a T-shaped sliding portion located at the rear and a connecting shaft located at the front. The T-shaped sliding portion is tightly embedded in the T-shaped slot, and the connecting shaft is located in front of the support plate. The supporting roller is connected to the connecting shaft through a bearing, a retaining spring and a bearing retaining ring; An axial through hole is provided in the T-shaped support slider along the central axis of the connecting shaft, and a threaded fixing hole is provided on the support base at a position corresponding to the axial through hole. The axial through hole is 1.5 to 2.5 mm larger on one side than the threaded fixing hole. The adjusting screw adjusts the T-shaped support slider so that the support roller is in linear contact with the turntable of the injection molding machine. Then, a first hexagon socket screw is passed through the inner hole of the bearing retaining ring, the axial through hole, and then screwed to the threaded fixing hole to lock the support roller and the T-shaped support slider on the support base.

2. A turntable support device according to claim 1, characterized in that The front end surface of the transverse portion of the T-shaped sliding portion is in close contact with the rear end surface of the supporting pressing plate, and the rear end surface of the transverse portion of the T-shaped sliding portion is in close contact with the bottom of the groove.

3. A turntable support device according to claim 1, characterized in that The notch is aligned with the center of the groove.

4. A turntable support device according to claim 1, characterized in that The adjusting screw is a hexagonal flat-end set screw. Two adjusting screws are vertically penetrated on the support pressure plate below the notch. The adjusting screw is threaded with a hexagonal nut, and the hexagonal nut contacts the bottom end surface of the support pressure plate.

5. The turntable support device according to claim 1, characterized in that There is a gap between the supporting roller and the supporting pressing plate.

6. The turntable support device according to claim 3, characterized in that The support base is fixed on the movable platen of the injection molding machine through a second hexagon socket screw and an internal thread cylindrical pin.

7. A turntable support device according to claim 6, characterized in that The internal thread cylindrical pin is located below the T-shaped supporting slider in the vertical direction.

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