Multi-cavity internal thread automatic demolding mechanism

Abstract

The utility model discloses a multi-cavity internal thread automatic demoulding mechanism which comprises an upper mould, a lower mould, an oil motor, a driving gear, a driven gear set, a driven gear set cover plate and a rotating core, the upper mould is arranged above the lower mould, an upper cavity is arranged in the upper mould, a pair of sliding blocks is arranged in the lower mould, the lower parts of the sliding blocks are connected with sliding block ejector rods, and the sliding block ejector rods are connected with the oil motor. The output end of the oil motor is connected with a driving gear, the driving gear is connected with a driven gear set, a driven gear is arranged on a rotating core, the upper end of the rotating core is connected with a cover plate of the driven gear set, and a radial bearing and a thrust bearing are arranged on the upper side and the lower side of the driven gear of the rotating core. And the upper cavity, the two sliding blocks and the rotary core form a product cavity. The oil motor drives the gear set to rotate so as to drive the rotating core to rotate, demolding of the pipe fitting with the internal thread is achieved, the demolding structure is small in occupied space and compact in structure, the mold manufacturing cost can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fitting moulds, in particular to a multi-cavity internal thread automatic demoulding mechanism. Background Art

[0002] At present, most plastic pipe fittings are processed by injection molds. Many plastic pipe fittings have internal threads. Plastic pipe fittings with internal threads require higher precision dimensions. The production molds of some small pipe fittings cannot adopt an internal draw structure and the mold structure is complex, the manufacturing cost is high, which is not conducive to the production of small plastic pipe fittings with internal threads. Utility Model Content

[0003] In view of the above problems, the utility model aims to provide a multi-cavity internal thread automatic demoulding mechanism to realize the demoulding of plastic pipe fittings with internal threads.

[0004] The technical problem solved by the utility model can be achieved by adopting the following technical scheme: a multi-cavity internal thread automatic demolding mechanism, comprising an upper mold, a lower mold, an oil motor, a driving gear, a driven gear set, a driven gear set cover plate and a rotating core, the upper mold is arranged above the lower mold, an upper cavity is arranged in the upper mold, a pair of sliders are arranged in the lower mold, a slider push rod is connected to the bottom of the slider, the output end of the oil motor is connected to the driving gear, the driving gear is connected to the driven gear set, the driven gear is arranged on the rotating core, the upper end of the rotating core is connected to the driven gear set cover plate, the upper cavity, two sliders and the rotating core constitute a product cavity.

[0005] A radial bearing is arranged on both upper and lower sides of the driven gear of the rotating core, and a thrust bearing is arranged on the rotating core, and the thrust bearing is located above the upper radial bearing.

[0006] The lower end of the slider push rod is fixed on the push pin plate, the slider push rod passes through the pad plate and is connected to the lower part of the slider, the push pin plate is fixed on the push pin doubler plate, and the push pin doubler plate is arranged on the lower doubler plate.

[0007] The oil motor is fixed on an oil motor fixing plate, and the oil motor fixing plate is fixed on one side of the upper mold.

[0008] A driving gear cover plate is arranged above the driving gear, and the driving gear cover plate is fixed on the oil motor fixing plate.

[0009] A driven gear set cover plate is arranged above the driven gear set, and the driven gear set cover plate is fixed between the upper composite plate and the upper mold.

[0010] The lower end of the rotating core contacts with the product ejector rod when the mold is closed, and the lower end of the product ejector rod is fixed on the ejector plate.

[0011] The product has two cavities, two pairs of slide blocks are arranged in the lower mold, and the driven gear set has two rows of driven gears connected with rotating cores.

[0012] The lower mold is arranged on a pad, the pad is arranged above the mold foot, the mold foot is fixed on the lower composite plate, an upper mold is arranged below the upper composite plate, an upper mold is arranged below the upper composite plate, four guide pillars are arranged on the upper composite plate, four guide sleeves are correspondingly arranged on the pad, the guide pillars pass through the driven gear set cover plate and the upper mold, the guide sleeve passes through the lower mold, and the guide pillars are inserted into the guide sleeves.

[0013] The front and rear ends of the sliding block are provided with guide rail blocks, the guide rail blocks are fixed on the lower mold, and two inclined guide rails are provided on the guide rail blocks.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model drives the gear set to rotate through the oil motor and then drives the rotating core to rotate, thereby realizing the demoulding of pipe fittings with internal threads. The demoulding structure occupies less space and has a compact structure, which can reduce the mold manufacturing cost and is easy to use; one-time injection molding can automatically dethread multi-cavity products; and a two-row arrangement is adopted to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the gear transmission mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the utility model after removing the upper mold and the lower mold;

[0019] Figure 5 This is a schematic diagram of the structure of the lower mold of the utility model;

[0020] In the figure: 1-upper plate; 2-radial bearing; 3-thrust bearing; 4-driving gear; 5-oil motor; 6-shim plate; 7-lower plate; 8-driven gear cover plate; 9-lower die; 10-driving gear cover plate; 11-oil motor fixing plate; 12-pipe fitting product; 13-driven gear; 14-rotating core; 15-die foot; 16-slider ejector rod; 17-slider; 18-upper die; 19-upper cavity; 20-ejector plate; 21-guide block; 22-guide column; 23-guide sleeve; 24-reset rod; 25-product ejector rod. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0022] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] Combined with Figures 1 to 5 As shown, this embodiment discloses a multi-cavity internal thread automatic demolding mechanism, including an upper mold 18, a lower mold 9, an oil motor 5, a driving gear 4, a driven gear set, a driven gear set cover plate 8, an upper cavity 19, a slider 17, a rotating core 14, a radial bearing 2 and a thrust bearing 3. The upper mold 18 is arranged above the lower mold 9, and an upper cavity 19 is arranged in the upper mold 18. A pair of sliders 17 are arranged in the lower mold 9, and the two sliders 17 are symmetrically arranged. A slider push rod 16 is connected to the bottom of the slider 17, and the lower end of the slider push rod 16 is fixed on the ejector plate 20. The slider push rod 16 passes through the pad 6 and is connected to the lower part of the slider 17. The upper end of the slider push rod 16 and the lower part of the slider 17 are connected by an I-shaped connection. The output end of the oil motor 5 is connected with a driving gear 4, which is connected with a driven gear set. A driven gear set cover plate 8 is arranged above the driven gear set, and the driven gear set cover plate 8 is fixed between the upper composite plate 1 and the upper mold 18. There are multiple driven gears 13 in the driven gear set, and the driven gears 13 are arranged on a rotating core 14. The upper end of the rotating core 14 is connected with the driven gear set cover plate 8, and the lower end of the rotating core 14 passes through the upper cavity 19 and extends into the product cavity. The upper cavity 19, two sliders 17 and the rotating core 14 constitute the product cavity.

[0024] A radial bearing 2 is provided on both upper and lower sides of the driven gear 13 of the rotating core 14. A thrust bearing 3 is provided on the rotating core 14. The thrust bearing 3 is located above the upper radial bearing 2. The radial bearing 2 and the thrust bearing 3 ensure that the rotating core 14 does not shake when rotating.

[0025] The oil motor 5 is fixed on an oil motor fixing plate 11 , and the oil motor fixing plate 11 is fixed on one side of the upper mold 18 . A driving gear cover plate 10 is arranged above the driving gear 4 , and the driving gear cover plate 10 is fixed on the oil motor fixing plate 11 .

[0026] The lower end of the rotating core 14 contacts the product ejector pin 25 during mold closing, and the lower end of the product ejector pin 25 is fixed on the ejector plate 20 .

[0027] The product cavities are two, two pairs of slide blocks 17 are arranged in the lower mold 9, and the driven gear set has two rows of driven gears 13 connected with a rotating core 14. One mold has two product cavities to improve production efficiency.

[0028] The lower die 9 is arranged on the pad 6, and the pad 6 is arranged above the die foot. The die foot 15 is fixed on the lower compound plate 7. An upper die 18 is arranged below the upper compound plate 1. Four guide pillars 22 are arranged on the upper compound plate 1. Four guide sleeves 23 are correspondingly arranged on the pad 6. The guide pillars 22 pass through the driven gear set cover plate 8 and the upper die 18. The guide sleeve 23 passes through the lower die 9. The guide pillars 22 are inserted into the guide sleeves 23. An ejector plate 20 is arranged on the lower compound plate 7. A reset rod 24 is arranged on the ejector plate 20. The reset rod 24 passes through the through holes on the lower die 9 and the pad 6. A spring is sleeved on the reset rod 24. The upper end of the spring is connected to the pad 6, and the lower end is connected to the ejector plate 20.

[0029] A guide rail block 21 is provided at each of the front and rear ends of the slider 17. The guide rail block 21 is fixed on the lower mold 9. Two inclined guide rails are provided on the guide rail block 21. The front and rear ends of the slider 17 are correspondingly provided with guide rails, and the slider 17 can slide along the guide rails.

[0030] When the mold is opened, the upper mold 18 is separated from the lower mold 9, and at the same time, the oil motor 5 works to drive the driving gear and the driven gear 13 to rotate, and the driven gear 13 then drives the rotating core 14 to rotate, so that the pipe fitting product 12 on the rotating core 14 is dethreaded, and then the injection molding machine pushes the ejector plate 20, and the slider push rod 16 pushes the slider 17 upward to separate the two sliders 17, and at the same time, the product push rod 25 pushes the product 12 upward to realize the demoulding of the pipe fitting product 12. The utility model drives the gear set to rotate through the oil motor 5 and then drives the rotating core 14 to rotate, so as to realize the demoulding of the pipe fitting product with internal threads. The demoulding structure occupies less space and has a compact structure, which can reduce the mold manufacturing cost and improve production efficiency; one injection molding can automatically dethread multi-cavity products; and the two-row arrangement can improve production efficiency.

[0031] The above description is only a preferred implementation mode of the utility model, and does not impose any form of limitation on the utility model. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A multi-cavity internal thread automatic demoulding mechanism, comprising an upper die (18), a lower die (9), an oil motor (5), a driving gear (4), a driven gear set and a rotating core (14), wherein the upper die (18) is arranged above the lower die (9), and is characterized in that: An upper cavity (19) is provided in the upper mold (18), a pair of sliders (17) are provided in the lower mold (9), a slider push rod (16) is connected below the sliders (17), an output end of the oil motor (5) is connected to a driving gear (4), the driving gear (4) is connected to a driven gear set, the driven gear (13) is provided on a rotating core (14), the upper end of the rotating core (14) is connected to a driven gear set cover plate (8), and the upper cavity (19), the two sliders (17) and the rotating core (14) constitute a product cavity.

2. The multi-cavity internal thread automatic stripping mechanism according to claim 1, characterized in that: A radial bearing (2) is provided on both upper and lower sides of the driven gear (13) of the rotating core (14), and a thrust bearing (3) is provided on the rotating core (14), wherein the thrust bearing (3) is located above the upper radial bearing (2).

3. The multi-cavity internal thread automatic demoulding mechanism according to claim 1, characterized in that: The lower end of the slider push rod (16) is fixed on the ejector plate (20), and the slider push rod (16) passes through the backing plate (6) and is connected to the lower part of the slider (17).

4. The multi-cavity internal thread automatic demoulding mechanism according to claim 1, characterized in that: The oil motor (5) is fixed on an oil motor fixing plate (11), and the oil motor fixing plate (11) is fixed on one side of the upper mold (18).

5. The multi-cavity internal thread automatic demoulding mechanism according to claim 4, characterized in that: A driving gear cover plate (10) is arranged above the driving gear (4), and the driving gear cover plate (10) is fixed on an oil motor fixing plate (11).

6. The multi-cavity internal thread automatic stripping mechanism according to claim 1, characterized in that: A driven gear set cover plate (8) is provided above the driven gear set, and the driven gear set cover plate (8) is fixed between the upper composite plate (1) and the upper mold (18).

7. The multi-cavity internal thread automatic demoulding mechanism according to claim 1, characterized in that: The lower end of the rotating core (14) contacts the product ejector rod (25) when the mold is closed, and the lower end of the product ejector rod (25) is fixed on the ejector plate (20).

8. The multi-cavity internal thread automatic stripping mechanism according to claim 1, characterized in that: The product has two cavities, two pairs of slide blocks (17) are arranged in the lower mold (9), and the driven gear set has two rows of driven gears (13) connected to a rotating core (14).

9. The multi-cavity internal thread automatic demoulding mechanism according to claim 1, characterized in that: The lower die (9) is arranged on a backing plate (6), the backing plate (6) is arranged above the die foot, the die foot (15) is fixed on the lower composite plate (7), an upper die (18) is arranged below the upper composite plate (1), four guide pillars (22) are arranged on the upper composite plate (1), four guide sleeves (23) are correspondingly arranged on the backing plate (6), the guide pillars (22) pass through the driven gear set cover plate (8) and the upper die (18), the guide sleeves (23) pass through the lower die (9), the guide pillars (22) are inserted into the guide sleeves (23), an ejector plate (20) is arranged on the lower composite plate (7), a reset rod (24) is arranged on the ejector plate (20), the reset rod (24) passes through the through holes on the lower die (9) and the backing plate (6), a spring is sleeved on the reset rod (24), the upper end of the spring is connected to the backing plate (6), and the lower end is connected to the ejector plate (20).

10. The multi-cavity internal thread automatic demoulding mechanism according to claim 1, characterized in that: Guide rail blocks (21) are provided at the front and rear ends of the slide block (17). The guide rail block (21) is fixed on the lower mold (9), and two inclined guide rails are provided on the guide rail block (21).

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