Rotary table center shaft of rotary table double-colored plastic injection machine

Abstract

The utility model relates to the related technical field of injection molding machines, and discloses a turntable center shaft of a turntable double-colored injection molding machine, which comprises a rear template, a turntable, a turntable shaft, a front bearing cover, a framework oil seal I, a needle bearing I, a turntable bearing blocking cover, a framework oil seal II, a rear bearing cover, a needle bearing II, a bearing spacer ring I and a bearing spacer ring II. The turntable shaft is mounted on the turntable; inner bearings of the needle bearing I and the needle bearing II are fixed on the turntable shaft through a bearing spacer ring II; outer bearings of the needle bearing I and the needle bearing II are fixed on the rear template through a bearing spacer ring I; a gap is reserved between the rear mold plate and the turntable; the turntable shaft is connected with the turntable and rotates on the rear mold plate under the action of external force; the front bearing cover is mounted on the rear template; the framework oil seal I is fixed between the front bearing cover and the turntable shaft; the rear bearing cover is installed on the rear mold plate, and the turntable bearing blocking cover is installed on the turntable shaft.

Description

Technical Field

[0001] The utility model relates to the technical field related to injection molding machines, in particular to a turntable central axis of a turntable two-color injection molding machine. Background Art

[0002] During the injection molding process of the turntable two-color injection molding machine, the inertia generated by the rotation of the turntable and the weight of the mold and the turntable itself cause the turntable to tilt and shake, thereby affecting the injection molding of the product. The design purpose of the utility model is to solve the above problems, and it has a simple structure, low cost, and does not require major changes to the original structure.

[0003] The existing hydraulic turntable device for two-color injection molding machine mold can refer to the Chinese utility model patent with the authorization announcement number CN214562489U, which discloses a hydraulic turntable device for two-color injection molding machine mold, including a body, a mounting bottom groove, a hydraulic motor, a fuel hole, an inner thread, a transmission cylinder, a sealing ring, a rotating disk, an external sleeve, a center bearing and a positioning shaft. The bottom of the body is provided with a mounting bottom groove, the hydraulic motor is arranged at the inner bottom of the body, the fuel hole is arranged on the hydraulic motor, the inner thread is arranged inside the transmission cylinder, the transmission cylinder is connected between the hydraulic motor and the rotating disk, the sealing ring is arranged on the transmission cylinder, the external sleeve is arranged outside the rotating disk, the center bearing is arranged in the middle of the rotating disk, and the positioning shaft is arranged on the rotating disk. The utility model can perform turntable correction and positioning, which can improve the injection molding operation of the two-color injection molding machine, and further stabilize the rotating turntable, facilitate maintenance and replacement, and has strong practicality.

[0004] When the above-mentioned equipment is in use, the turntable can be corrected and positioned, which can improve the injection molding operation of the two-color injection molding machine and further stabilize the rotation of the turntable, making it easy to repair and replace. At the same time, when the equipment is in use, the grease injected into the internal part of the equipment is easy to be lost, which often leads to the problem of low fluidity of the turntable rotation. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a turntable center axis of a turntable two-color injection molding machine, which has the advantages of strong practicality and good stability, and solves the problems of grease not easily lost inside the injection equipment and low fluidity of the turntable rotation.

[0006] The utility model provides the following technical scheme: a turntable center axis of a turntable two-color injection molding machine, comprising a rear template and a needle roller bearing, the outer wall of the rear template is fixedly connected with a turntable body, the rear template is sleeved with a rear bearing cover on a side away from the turntable body, the outer wall of the rear bearing cover is provided with a turntable bearing stop cover, the outer wall of the turntable bearing stop cover is provided with a bearing sleeve ring body, the inner wall of the bearing sleeve ring body is sleeved with an internal needle roller, and the bearing sleeve ring bodies are symmetrically distributed on the inner wall of the rear template.

[0007] As a preferred technical solution of the utility model, the inner wall of the rear template is sleeved with a second needle bearing, the outer wall of the second needle bearing is provided with a first bearing spacer ring, and the outer wall of the first bearing spacer ring is provided with a second bearing spacer ring.

[0008] As a preferred technical solution of the utility model, the outer wall of the rear template is provided with a turntable shaft body, the inner wall of the rear template is provided with a front bearing cover, and the outer wall of the front bearing cover is provided with a skeleton oil seal.

[0009] As a preferred technical solution of the utility model, the inner wall of the rear template is provided with a card slot, and the number of the card slots is two and they are symmetrically distributed on the inner wall of the rear template.

[0010] As a preferred technical solution of the utility model, the inner wall of the rear template is provided with two skeleton oil seals, and the number of the skeleton oil seals is two and they are symmetrically distributed on the inner wall of the rear template.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The turntable center axis of the turntable two-color injection molding machine is set with a turntable body and a turntable axis, so that the equipment can effectively avoid the tilting and shaking of the turntable caused by the weight of the mold and the turntable itself during rotation, and also enhance the practicability of the equipment.

[0013] 2. The turntable center axis of the turntable two-color injection molding machine is provided with skeleton oil seal 1 and skeleton oil seal 2, so that the grease injected into the needle bearing area can ensure the smooth rotation of the turntable. At the same time, the bearing spacer ring 1 and bearing spacer ring 2 are arranged in pairs inside the equipment to improve the stability of the injection molding of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the central axis of a turntable of a turntable two-color injection molding machine;

[0015] Figure 2 for Figure 1 A magnified view of the structure in the middle.

[0016] In the figure: 1. rear template; 2. turntable body; 3. turntable shaft body; 4. front bearing cover; 5. skeleton oil seal one; 6. needle roller bearing one; 61. bearing ring body; 62. internal needle roller; 7. turntable bearing cover; 8. skeleton oil seal two; 9. rear bearing cover; 10. needle roller bearing two; 11. bearing spacer ring one; 12. bearing spacer ring two; 13. slot. DETAILED DESCRIPTION

[0017] 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 in 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.

[0018] See also Figure 1-2 A turntable center shaft of a turntable two-color injection molding machine includes a rear template 1, a turntable body 2, a turntable shaft body 3, a front bearing cover 4, a skeleton oil seal 5, a needle bearing 6, a bearing ring body 61, an internal needle roller 62, a turntable bearing cover 7, a skeleton oil seal 8, a rear bearing cover 9, a needle bearing 10, a bearing spacer ring 11 and a bearing spacer ring 12. The turntable shaft body 3 is installed on the turntable body 2; the inner bearings of the needle bearing 16 and the needle bearing 2 10 are separated and fixed on the turntable shaft body 3 by the bearing spacer ring 2 12; the outer bearings of the needle bearing 16 and the needle bearing 2 10 are separated and fixed on the rear template 1 by the bearing spacer ring 11; a gap is left between the turntable body 2 and the rear template 1, and the turntable shaft body 3 is connected to the turntable body 2 through the needle bearing 16 and the needle bearing 2 10 through the external force to rotate on the rear template 1; the gap between the needle bearing 16 and the needle bearing 2 10 is small, and the contact area with the rear template 1 and the turntable shaft body 3 is large, which maximizes the avoidance of the tilting of the turntable body 2 caused by the weight of the mold and the turntable body 2 itself and the shaking during the rotation process; the front bearing cover 4 is installed on the rear template 1, and the skeleton oil seal 5 It is fixed between the front bearing cover 4 and the turntable shaft body 3; the rear bearing cover 9 is installed on the rear template 1, the turntable bearing cover 7 is installed on the turntable shaft body 3, and the skeleton oil seal 2 8 is fixed between the rear bearing cover 9 and the turntable bearing cover 7; the turntable shaft body 3 has an oil filling hole, and grease can be filled into the needle bearing 1 6 and the needle bearing 2 10 area through the oil filling hole before the turntable body 2 rotates, and grease can be added after subsequent grease loss. The skeleton oil seal 1 5 and the skeleton oil seal 2 8 can prevent grease from leaking out, and the injected grease lubricates the needle bearing 1 6 and the needle bearing 2 10. The friction between the internal needle roller 62 and the needle bearing 2 10 ensures the smoothness of the rotation of the turntable body 2 and increases the service life of the bearing ring body 61 and the needle bearing 2 10. At the same time, the card slots 13 symmetrically distributed in the rear template 1 can also facilitate the loading and unloading and fixing of the equipment.

[0019] Working principle: when the equipment needs to be used, by setting the turntable body 2 and the turntable shaft, the equipment can effectively avoid the tilting and shaking of the turntable caused by the weight of the mold and the turntable itself during rotation, and at the same time, the practicability of the equipment is enhanced. At the same time, by setting the skeleton oil seal 1 5 and the skeleton oil seal 2 8, the grease injected into the needle bearing area can ensure the smoothness of the turntable rotation. At the same time, by setting the bearing spacer ring 1 11 and the bearing spacer ring 2 12 distributed in pairs inside the equipment, the stability of the equipment injection molding is improved.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turntable center shaft of a turntable two-color injection molding machine, comprising a rear mold plate (1) and a needle roller bearing (6), characterized in that: The outer wall of the rear template (1) is fixedly connected to a turntable body (2); a rear bearing cover (9) is sleeved on a side of the rear template (1) away from the turntable body (2); a turntable bearing stop cover (7) is provided on the outer wall of the rear bearing cover (9); a bearing sleeve ring body (61) is provided on the outer wall of the turntable bearing stop cover (7); an internal needle roller (62) is sleeved on the inner wall of the bearing sleeve ring body (61); and the bearing sleeve ring bodies (61) are symmetrically distributed on the inner wall of the rear template (1).

2. The turntable center axis of the turntable two-color injection molding machine according to claim 1, characterized in that: The inner wall of the rear template (1) is sleeved with a needle roller bearing 2 (10), the outer wall of the needle roller bearing 2 (10) is provided with a bearing spacer ring 1 (11), and the outer wall of the bearing spacer ring 1 (11) is provided with a bearing spacer ring 2 (12).

3. The turntable center axis of the turntable two-color injection molding machine according to claim 1, characterized in that: The outer wall of the rear template (1) is provided with a turntable shaft body (3), the inner wall of the rear template (1) is provided with a front bearing cover (4), and the outer wall of the front bearing cover (4) is provided with a skeleton oil seal (5).

4. The turntable center axis of the turntable two-color injection molding machine according to claim 1, characterized in that: The inner wall of the rear template (1) is provided with a clamping groove (13), and the number of the clamping grooves (13) is two and they are symmetrically distributed on the inner wall of the rear template (1).

5. The turntable center axis of the turntable two-color injection molding machine according to claim 1, characterized in that: The inner wall of the rear template (1) is provided with a second skeleton oil seal (8), and the number of the second skeleton oil seal (8) is two and they are symmetrically distributed on the inner wall of the rear template (1).

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