CN102794876A - Injection mold for making helical fan - Google Patents

Abstract

The invention discloses an injection mold for making a spiral fan. The injection mold includes a movable mold seat plate, a square iron, a supporting plate, a movable template, a fixed template, a front inner mold, a spiral core, a split oblique bearing, Slider, shovel, inclined guide column, nozzle push plate, fixed mold seat plate, positioning ring, bottom needle plate, face needle plate, cylinder and cylinder needle. The invention has a simple structure and reduces the cost. The structure adopts a slider and a spiral core structure, and the spiral core relies on the rotation of the split oblique bearing to achieve the ejection of the plastic product by the cylinder, which makes the complex demoulding problem easier. , to ensure the quality of the product.

Description

An injection mold for making a spiral fan

technical field

The invention relates to an injection mold, in particular to an injection mold for making a spiral fan.

Background technique

The plastic part of the spiral fan is a part with helical curved blades in the whole circle. The structure of the part is complicated and it is not easy to demold. At present, although there are related molds in the enterprise for production injection molding, the structure is very complicated, the production cost is high, and the dimensional accuracy It is also difficult to control, thereby affecting the mechanical strength of the product and easily causing product quality defects.

Contents of the invention

(1) Technical problems to be solved

The technical problem to be solved by the present invention is to provide an injection mold for making a spiral fan, so as to overcome the defects of complex structure, high production cost and difficult quality assurance in the injection mold in the prior art.

(2) Technical solutions

In order to achieve the above object, the present invention provides an injection mold for making a spiral fan, the injection mold includes a movable mold seat plate, a square iron, a supporting plate, a movable template, a fixed template, a front inner mold, a spiral core, a One-piece oblique bearing, slider, shovel, oblique guide column, nozzle push plate, fixed mold seat plate, positioning ring, bottom needle plate, face needle plate, cylinder and cylinder needle;

Both sides of the movable formwork seat plate are fixedly connected to the square iron, the square iron is fixedly connected to the supporting plate, the supporting plate is fixedly connected to the movable formwork, the movable formwork is connected to the fixed formwork, and the support The plate and the fixed template are respectively provided with cooling channels, and a cavity is formed between the movable template and the fixed template, and the cavity is provided with the front inner mold, the spiral core, the split oblique bearing, and the slider and a shovel, the split-type oblique bearing fits on the spiral core, the shovel matches the slider, the slanted guide column is fixed on the fixed template and cooperates with the slider, The shovel is fixed on the fixed template, and the cooling channel on the fixed template communicates with the cooling channel on the front inner mold;

The fixed die plate is connected with the nozzle push plate, and a runner condensate cavity is formed between the fixed die plate and the nozzle push plate, and the nozzle push plate is connected with the fixed die seat plate, and the positioning ring is arranged on the On the fixed mold base plate, there are nozzles, nozzle hooks and limit screws between the fixed mold base plate and the nozzle push plate. The upper pull rod is connected, the bottom needle plate is provided in the middle of the square iron, the bottom needle plate is fixed with the face needle plate, the face needle plate is fixed with the cylinder, and the cylinder is worn through The supporting plate is connected with the spiral core, and the cylinder pin is fixed on the movable mold seat plate and penetrates in the cylinder.

Preferably, the injection mold further includes a support head, the support head is fixed on the movable mold seat plate and connected with the movable mold plate through the bottom needle plate and the upper needle plate in sequence.

Preferably, the injection mold further includes a first guide mechanism, the first guide mechanism includes a first guide sleeve and a first guide post; the first guide post cooperates with the first guide sleeve, and the The first guide sleeve is arranged in the movable formwork and the fixed formwork, and the first guide column is connected with the square iron, the support plate, the movable formwork, the fixed formwork, the nozzle push plate and the fixed formwork seat plate.

Preferably, the injection mold further includes a second guide mechanism, the second guide mechanism includes a second guide sleeve and a second guide post; the second guide sleeve is arranged on the face needle plate and the bottom needle plate , the second guide post is arranged on the movable mold seat plate and the supporting plate and matched with the second guide sleeve.

Preferably, the injection mold further includes a return spring, and the return spring is arranged between the support plate and the needle face plate.

Preferably, the injection mold further includes a reset rod, and the reset rod is fixed on the needle plate and passes through the support plate.

Preferably, the needle face plate is provided with a limit post, and the limit post is used to limit the moving position of the needle face plate.

(3) Beneficial effects

Compared with the prior art, the structure of the injection mold of the present invention is simple, and the cost is reduced. The structure adopts a slider and a spiral core structure, and the spiral core relies on the rotation of the split oblique bearing to achieve the ejection of the plastic product by the cylinder. It simplifies the complex demoulding problem and ensures the quality of the product.

Description of drawings

Fig. 1 is the structural representation of spiral fan plastic part product of the present invention;

Fig. 2 is a structural schematic diagram of an injection mold for making a spiral fan in the present invention;

Fig. 3 is a schematic cross-sectional structure diagram along line B-B in Fig. 2;

Fig. 4 is a schematic cross-sectional structure diagram along line A-A in Fig. 2 .

In the attached drawings: 1. Moving formwork seat plate, 2. Square iron, 3. Supporting plate, 4. Moving formwork, 5. Fixed formwork, 6. Front inner mold, 7. Spiral core, 8. Split oblique bearing, 9. Slider, 10. Shovel, 11. Inclined guide column, 12. Nozzle push plate, 13. Fixed mold seat plate, 14. Locating ring, 15. Bottom needle plate, 16. Surface needle plate, 17. Secretary tube , 18, cylinder needle, 19, nozzle, 20, spout crochet needle, 21, limit screw, 22, pull rod, 23, support head, 24, first guide mechanism, 25, first guide sleeve, 26, first Guide pillar, 27, the second guide mechanism, 28, the second guide sleeve, 29, the second guide pillar, 30, back-moving spring, 31, reset lever, 32, limit post, 33, positioning nail, 34, the first point Surface PL1, 35, second parting surface PL2, 36, third parting surface PL3, 37, K.O. hole, 38, spiral fan, 39, blade, 40, stepped hole.

Detailed ways

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

The spiral fan plastic product of the present invention is shown in Figure 1. The spiral fan 38 plastic product is a part with a helical curve blade 39 and a stepped hole 40 in the middle. The material is ABS and the shrinkage rate is 0.5%. The structure of the part is more complicated, and it is not easy to demould.

The injection mold for making spiral fan of the present invention is shown in Figure 2, 3, 4, and described injection mold comprises movable mold seat plate 1, square iron 2, supporting plate 3, movable template 4, fixed template 5, front inner Die 6, spiral core 7, split type oblique bearing 8, slider 9, shovel 10, oblique guide column 11, nozzle push plate 12, fixed mold base plate 13, positioning ring 14, bottom needle plate 15, face needle plate 16. The barrel 17 and the barrel needle 18;

Both sides of the movable formwork seat plate 1 are fixedly connected to the square iron 2, the square iron 2 is fixedly connected to the supporting plate 3, and the supporting plate 3 is fixedly connected to the movable formwork 4 and precisely positioned by positioning nails 33, The movable template 4 is connected to the fixed template 5, the supporting plate 3 and the fixed template 5 are respectively provided with cooling channels, and a mold cavity is formed between the movable template 4 and the fixed template 5, and the mold cavity is The front inner mold 6, the spiral core 7, the split oblique bearing 8, the slide block 9 and the shovel 10 are provided, the split oblique bearing 8 is fitted on the spiral core 7, and the shovel 10 Matched with the slider 9, the inclined guide post 11 is fixed on the fixed template 5 and cooperates with the slider 9, the shovel 10 is fixed on the fixed template 5, and the fixed template 5 The cooling water passage on the top communicates with the cooling water passage on the front inner mold 6;

The fixed die plate 5 is connected with the nozzle push plate 12, and a runner condensate cavity is formed between the fixed die plate 5 and the nozzle push plate 12, and the nozzle push plate 12 is connected with the fixed die seat plate 13, and the The positioning ring 14 is arranged on the fixed mold seat plate 13, and the positioning ring 14 ensures that the position of the nozzle 19 of the injection mold is consistent with the position of the nozzle. Between said fixed mold seat plate 13 and said nozzle push plate 12, be provided with nozzle 19, nozzle crochet needle 20 and stop screw 21, described stop screw 21 and be located at described moving template 4, fixed template 5 and The pull rod 22 on the supporting plate 3 is connected, the middle of the square iron 2 is provided with the bottom needle plate 15, the bottom needle plate 15 is fixed with the needle plate 16, and the needle plate 16 is fixed with a Said cylinder 17, said cylinder 17 passes through said supporting plate 3 and connects with spiral core 7, said cylinder needle 18 is fixed on said movable die seat plate 1 and penetrates in said cylinder 17 .

The injection mold also includes a supporting head 23, which is fixed on the movable mold seat plate 1 and passes through the bottom needle plate 15 and the face needle plate 16 and the movable template 4 in sequence. connect.

The injection mold also includes a first guide mechanism 24, the first guide mechanism 24 includes a first guide sleeve 25 and a first guide post 26; the first guide post 26 is matched with the first guide sleeve 25, The first guide sleeve 25 is arranged in the movable template 4 and the fixed template 5, and the first guide post 26 is connected to the square iron 2, the supporting plate 3, the movable template 4, the fixed template 5, and the nozzle push plate 12 And the fixed mold seat plate 13, the first guide mechanism 24 is mainly to guide the movement of the movable template 4 and the fixed template 5, so as to facilitate accurate positioning.

The injection mold also includes a second guide mechanism 27, and the second guide mechanism 27 includes a second guide sleeve 28 and a second guide post 29; the second guide sleeve 28 is arranged on the face needle plate 16 and the bottom needle On the plate 15 , the second guide post 29 is arranged on the movable mold seat plate 1 and the supporting plate 3 and matched with the second guide sleeve 28 . The second guide mechanism 27 is mainly to guide the movement of the face needle plate 16 and the bottom needle plate 15, so as to facilitate accurate positioning.

The injection mold also includes a return spring 30, and the return spring 30 is arranged between the supporting plate 3 and the needle face plate 16.

The injection mold also includes a reset rod 31 , which is fixed on the face needle plate 16 and passes through the supporting plate 3 .

The needle face plate 16 is provided with a limit post 32 , and the limit post 32 is used to limit the moving position of the needle face plate 16 .

When the present invention is in use, the injection mold is fixed on the injection molding machine; the injection mold is closed, and after the material is injected, filled, pressure-holding and cooled; Retreat, so that the mold is first separated at the first parting surface PL134, and the separation distance of the first parting surface PL134 is controlled by the tie rod 22, and the runner condensate is separated from the plastic part under the action of the spout hook 20; then the mold is separated from the second parting surface. The parting surface PL235 is separated, and the separation distance of the second parting surface PL235 is controlled by the limit screw 21. At this time, the nozzle push plate 12 forcibly pushes the runner condensate away from the nozzle hook 20 to realize the automatic de-casting of the mold. The fixed mold part completes all parting; the movable mold of the mold continues to retreat under the action of the injection molding machine, and the mold is separated from the third parting surface PL336, that is, the movable and fixed molds of the mold are separated. At this time, due to the inclined guide column 11 1. The shovel 10 moves upwards following the fixed template 5, and the inclined guide column 11 is dragged away from the slider 9. The plastic product of the spiral fan 38 is driven by resistance to drive the spiral core 7 to rotate around the split bearing 8, and the top rod of the injection molding machine passes through the K.O. The hole 37 pushes the bottom needle plate 15, the upper needle plate 16 drives the cylinder 17, and the cylinder 17 finally pushes out the plastic product of the screw fan 38, and the mold completes one injection molding; the injection mold is closed, and when the mold is closed, the first guide mechanism 24 and the second guiding mechanism 27 guiding reset mold closing, prepare next molding.

The injection mold of the present invention has a simple structure and reduces the cost. The structure adopts a slider and a spiral core structure, and the spiral core relies on the rotation of the split oblique bearing to achieve the ejection of the plastic product by the cylinder, so that the complicated demoulding problem becomes easier. The simplicity ensures the quality of the product.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (7)

1. injection mold that is used to make helical fan is characterized in that: said injection mold comprises Bottom clamp plate (1), square iron (2), supporting plate (3), moving platen (4), solid plate (5), preceding internal mold (6), helical core (7), split type angle pedestal bearing (8), slide block (9), shovel machine (10), Angle Pin (11), stripper plate (12), top clamping plate (13), locating ring (14), end needle plate (15), face needle plate (16), department tube (17) and an ejector pin (18);

Said Bottom clamp plate (1) both sides are fixedly connected said square iron (2); Said square iron (2) is fixedly connected said supporting plate (3); Said supporting plate (3) is fixedly connected said moving platen (4); Said moving platen (4) connects said solid plate (5), and said supporting plate (3), solid plate are respectively equipped with cooling water channel on (5), forms die cavity between said moving platen (4) and the said solid plate (5); Said die cavity is provided with said preceding internal mold (6), helical core (7), split type angle pedestal bearing (8), slide block (9) and shovel machine (10); Said split type angle pedestal bearing (8) is matched with on the said helical core (7), and said shovel machine (10) matches with said slide block (9), and said Angle Pin (11) is fixed in said solid plate (5) and upward and with said slide block (9) cooperates; Said shovel machine (10) is fixed on the said solid plate (5), the cooling water channel on the said solid plate (5) with said before cooling water channel on the internal mold (6) communicate;

Said solid plate (5) connects said stripper plate (12); Form runner between said solid plate (5) and the stripper plate (12) and expect die cavity with fixed attention; Said stripper plate (12) connects said top clamping plate (13); Said locating ring (14) is located on the said top clamping plate (13); Be provided with sprue bushing (19), mouth of a river crochet hook (20) and stop screw (21) between said top clamping plate (13) and the said stripper plate (12), said stop screw (21) links to each other with pull bar (22) on being located at said moving platen (4), solid plate (5) and supporting plate (3), and the centre of said square iron (2) is provided with needle plate of the said end (15); Needle plate of the said end (15) is fixed with said needle plate (16); Be fixed with said department's tube (17) on said the needle plate (16), said department's tube (17) passes said supporting plate (3) and is connected with helical core (7), and said ejector pin (18) is fixed in said Bottom clamp plate (1) and goes up and be arranged in said department's tube (17).

2. injection mold according to claim 1; It is characterized in that: said injection mold also comprises fastener (23), and said fastener (23) is fixed on the said Bottom clamp plate (1) and passes needle plate of the said end (15) successively and is connected with said moving platen (4) with face needle plate (16).

3. injection mold according to claim 1 is characterized in that: said injection mold also comprises first guiding mechanism (24), and said first guiding mechanism (24) comprises first guide pin bushing (25) and first guide pillar (26); Said first guide pillar (26) matches with said first guide pin bushing (25); Said first guide pin bushing (25) is located in said moving platen (4) and the solid plate (5), and said first guide pillar (26) connects said square iron (2), supporting plate (3), moving platen (4), solid plate (5), stripper plate (12) and top clamping plate (13).

4. injection mold according to claim 1 is characterized in that: said injection mold also comprises second guiding mechanism (27), and said second guiding mechanism (27) comprises second guide pin bushing (28) and second guide pillar (29); Said second guide pin bushing (28) is located on said needle plate (16) and the end needle plate (15), and said Bottom clamp plate (1) is located at by said second guide pillar (29) and supporting plate (3) upward and with said second guide pin bushing (28) matches.

5. injection mold according to claim 1 is characterized in that: said injection mold also comprises a back-moving spring (30), and said back-moving spring (30) is located between said supporting plate (3) and the face needle plate (16).

6. injection mold according to claim 1 is characterized in that: said injection mold also comprises a release link (31), and said release link (31) is fixed in said needle plate (16) and goes up and be arranged in the said supporting plate (3).

7. according to each described injection mold in the claim 1 to 6, it is characterized in that: said needle plate (16) is provided with limited post (32), and this limited post (32) is used to limit the shift position of said needle plate (16).

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