CN211251172U - Internal thread injection molding mould - Google Patents

Abstract

The utility model discloses an internal thread injection molding piece mold, which belongs to the technical field of injection molds and comprises a front mold and a rear mold, wherein the front mold comprises a top plate, a front mold fixing plate and a front mold core, the rear mold comprises a rear mold fixing plate, a rear mold core and a bottom plate, a slide bar is arranged between the top plate and the bottom plate, the front mold fixing plate and the rear mold fixing plate are arranged on the slide bar, the front mold core is arranged in the front mold fixing plate, and the rear mold core is arranged in the rear mold fixing plate; the front mold core is provided with a threaded mold core, the threaded mold core consists of two semicircular mold cores, and an insert block is arranged in each threaded mold core; the embedded block is fixed on the top plate; an injection molding die cavity is arranged on the rear die core, and a thimble is arranged on the bottom plate; the utility model discloses the simple operation, the practicality is strong, and the compound die is inseparable, the utility model discloses effectively solved prior art internal thread department and mould waste time and energy behind injection moulding, the drawing of patterns is inefficient, can't realize the problem of automatic drawing of patterns.

Description

Internal thread injection molding mould

Technical Field

The utility model relates to an injection mold technical field specifically is an internal thread injection molding mould.

Background

The injection molding workpiece is the most common production material, is widely used in the production of daily life appliances, and has relatively low raw material and processing cost, durability, large and stable market demand; the injection molding workpiece is often required to be processed with an internal thread structure so as to be conveniently connected with other parts. However, the internal thread is difficult to separate from the mold after injection molding, and the demolding is time-consuming and labor-consuming, the demolding efficiency is low, and automatic demolding cannot be realized; when higher requirements are designed on the die, the die needs to be removed in time and the temperature of the die is high, so that the operator is easily injured.

Disclosure of Invention

The utility model provides a not enough to prior art, the utility model provides an internal thread injection molding mould has solved prior art internal thread department and mould behind injection moulding and has been difficult to break away from, and the drawing of patterns is wasted time and energy, and drawing of patterns is inefficient, can't realize the problem of automatic drawing of patterns.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an internal thread injection molding piece mold comprises a front mold and a rear mold, wherein the front mold comprises a top plate, a front mold fixing plate and a front mold core, the rear mold comprises a rear mold fixing plate, a rear mold core and a bottom plate, a slide rod is arranged between the top plate and the bottom plate, the front mold fixing plate and the rear mold fixing plate are arranged on the slide rod, the front mold core is arranged in the front mold fixing plate, and the rear mold core is arranged in the rear mold fixing plate; the front mold core is provided with a threaded mold core, the threaded mold core consists of two semicircular mold cores, and an insert block is arranged in each threaded mold core; the threaded mold core can move close to or apart from the front mold core and is provided with an elastic piece to enable the threaded mold core to automatically close; the embedded block is fixed on the top plate; and an injection molding die cavity is arranged on the rear die core, and a thimble is arranged on the bottom plate.

Further, threaded mold core both sides on the mold core in the front are equipped with the mounting hole die rod, mounting hole die rod tail is equipped with the spacing head, the abaculus passes through connecting plate and roof fixed connection, the connecting plate both sides are equipped with the through-hole, and the through-hole front end diameter is less than the spacing head diameter of mounting hole die rod, and the through-hole rear end diameter is greater than the spacing head diameter of mounting hole die rod, the mounting hole die rod front end passes the connecting plate setting, the length of mounting hole die rod equals the abaculus and connecting plate connection length sum.

Furthermore, a front sliding rod is arranged on the top plate, a rear sliding rod is arranged on the bottom plate, the front sliding rod and the rear sliding rod are arranged in a staggered mode, and the front die fixing plate and the rear die fixing plate are both provided with sliding holes of the front sliding rod and the rear sliding rod; and the front sliding rod and the rear sliding rod both penetrate through the front mold fixing plate and the rear mold fixing plate during mold closing.

Further, a guide rod and a guide hole are respectively arranged on the front die fixing plate and the rear die fixing plate, and the diameter of the guide hole is larger than that of the guide rod.

Furthermore, through holes corresponding to the connecting plates are formed in two sides of the embedded block, and the front end of the mounting hole mold rod penetrates through the embedded block.

Furthermore, a feeding hole, a cooling hole and a drainage groove are formed in the front mold core, and the drainage groove is connected to the threaded mold core.

Furthermore, the embedded block is of a T-shaped structure, the front end of the embedded block is thinner than the rear end of the embedded block, and the front end of the embedded block is narrower than the rear end of the embedded block.

Further, the elastic part adopts a spring and is of a spiral structure.

The utility model provides an internal thread injection molding mould possesses following beneficial effect:

the utility model ensures that the threaded mold core can move close to or move apart from the front mold core through the elastic piece arranged on the front mold core by the threaded mold core; the insert is arranged in the threaded mold core, the front end of the insert is thinner than the rear end of the insert, and the front end of the insert is narrower than the rear end of the insert, so that the threaded mold core is separated before mold closing, and the threaded mold core can automatically approach after demolding; the top plate is fixed in the die assembly and is fixedly connected to the top plate through the insert block, and the insert block can withdraw from one part of the threaded die core during the die stripping, so that the threaded die core can be ensured to automatically draw close, and the rapid die stripping can be conveniently carried out; through the through holes arranged on the two sides of the insert block and corresponding to the connecting plate, the front end of the mounting hole mold rod penetrates through the insert block to play a role in stabilizing the insert block and prevent the insert block from swinging up and down in the mold closing or demolding process, through the through holes arranged on the two sides of the connecting plate, the diameter of the front end of the through hole is smaller than that of the limiting head of the mounting hole mold rod, the diameter of the rear end of the through hole is larger than that of the limiting head of the mounting hole mold rod to ensure that the mounting hole mold rod can not fall off in the through hole of the connecting plate, the length of the mounting hole mold rod is equal to the sum of the connecting lengths of the insert block and the connecting plate, so that when the insert block moves backwards in the mold closing process, the mounting hole mold rod continues to move forwards along with the threaded mold core, when the rear mold moves in the opposite direction in the demolding process, the threaded mold core exits the injection, realizing the core pulling process; the sliding rods arranged in a staggered manner on the top plate and the bottom plate facilitate the movement of the front mold fixing plate and the rear mold fixing plate during mold closing or demolding; the guide rods and the guide holes are respectively arranged on the front die fixing plate and the rear die fixing plate, and the diameters of the guide holes are larger than those of the guide rods, so that the guide rods can be inserted into the guide holes, the die assembly accuracy is improved, and the product yield is improved; the material injection device is connected to the threaded mold core through the drainage groove, raw materials are fed through the feeding hole in the mold closing process, and then are introduced onto the threaded mold core through the drainage groove, so that the rapid material injection in the mold closing process is realized, and the production efficiency is improved; cooling liquid is injected through the cooling hole, and the injection molding piece is condensed during demolding, so that the threaded mold core can complete core pulling conveniently; the spring in a spiral structure is adopted by the elastic part, so that the service life of the threaded mold core which can move close to or apart from the front mold core is prolonged; the utility model has the advantages of convenient operation, strong practicability, compact mold closing and perfect injection molding; the mold closing and demolding of the mold are not required to be carried out manually, so that the labor cost is reduced, and the integral connecting structure of the mold is not easy to break down; the utility model discloses effectively solved prior art internal thread department and mould behind injection moulding and be difficult to break away from, and the drawing of patterns is wasted time and energy, and drawing of patterns is inefficient, can't realize the problem of automatic drawing of patterns.

Drawings

Fig. 1 is the utility model discloses the structural schematic of internal thread injection molding mould compound die.

Fig. 2 is the utility model discloses the structural schematic before the mould closing before the internal thread injection molding mould.

Fig. 3 is the utility model discloses structural schematic behind the internal thread injection molding mould front mould compound die.

Fig. 4 is the utility model discloses the structural schematic of mold core before the internal thread injection molding mould.

Fig. 5 is the utility model discloses the structural schematic of mold core behind internal thread injection molding mould.

Figure 6 is the utility model discloses the structural schematic of internal thread injection molding mould inserted block.

Figure 7 is the utility model discloses the overlook structure schematic diagram of internal thread injection molding mould screw thread mold core.

Fig. 8 is the utility model discloses the structural schematic diagram of internal thread injection molding mould elastic component.

In the figure, 1-a front fixed plate, 2-a front mold core, 3-a top plate, 4-a rear mold fixed plate, 5-a rear mold core, 6-a bottom plate, 7-a thread mold core, 8-an insert, 9-an injection mold cavity, 10-a mounting hole mold rod, 11-a limiting head, 12-a connecting plate, 13-a front slide rod, 14-a rear slide rod, 15-a slide hole, 16-a guide rod, 17-a guide hole, 18-a feeding hole, 19-a drainage groove, 20-an elastic piece and 21-a cooling hole.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings, but the present invention is not limited to the following examples, and it is anticipated that one skilled in the art may implement various modifications in combination with the prior art.

As shown in fig. 1-8, the utility model provides an internal thread injection molding piece mold, which comprises a front mold and a rear mold, the front mould comprises a top plate 3, a front mould fixing plate 1 and a front mould core 2, the rear mould comprises a rear mould fixing plate 4, a rear mould core 5 and a bottom plate 6, a slide bar is arranged between the top plate 3 and the bottom plate 6, the front mold fixing plate 1 and the rear mold fixing plate 4 are arranged on the slide bar, so that the front mold fixing plate 1 and the rear mold fixing plate 4 can move conveniently in the mold closing or demolding process, the front mold core 2 is arranged in the front mold fixing plate 1, the rear mold core 5 is arranged in the rear mold fixing plate 4, the front die fixing plate 1 and the rear die fixing plate 4 are respectively provided with a guide rod 16 and a guide hole 17, the diameter of the guide hole 17 is larger than that of the guide rod 16, so that the guide rod 16 can be inserted into the guide hole 17 in the mold closing process, and the mold closing accuracy is improved; the front mold core 2 is provided with a feeding hole 18, a cooling hole 21 and a drainage groove 19, the drainage groove 19 is connected to the threaded mold core, the drainage groove 19 is also connected with an accessory mold module, raw materials are injected into the feeding hole 18 through the feeding hole 18 arranged on the front mold core 2 during mold closing, and then the raw materials are drained to the threaded mold core 7 and the accessory mold module through the drainage groove 19, so that the raw materials are injected rapidly, and the working efficiency is improved; when the mold is closed, cooling liquid is injected into the cooling holes 21 through the cooling holes 21 formed in the front mold core 2, so that the front mold core 2 on the front mold fixing plate 1 is cooled, and subsequent demolding is facilitated.

The utility model discloses a be equipped with screw thread mold core 7 on preceding mold core 2, screw thread mold core 7 comprises two semi-circular mold cores, screw thread mold core 7 can draw close or separate the removal on preceding mold core 2 to be equipped with elastic component 20 and make it can draw close automatically, elastic component 20 adopts the spring of 50-200mm line footpath, is helical structure, improves screw thread mold core 7 and can draw close or separate the life who removes on preceding mold core 2; the threaded mold core 7 is internally provided with an insert block 8, the insert block 8 is of a T-shaped structure, the front end of the insert block 8 is thinner than the rear end, and the front end is narrower than the rear end, so that the threaded mold core 7 can move close to or move apart in the mold closing and demolding processes; the insert block 8 is fixed on the top plate 3, a front slide bar 13 is arranged on the top plate 3, a rear slide bar 14 is arranged on the bottom plate 6, the front slide bar 13 and the rear slide bar 14 are arranged in a staggered mode, and the front die fixing plate 1 and the rear die fixing plate 4 are both provided with slide holes 15 of the front slide bar 13 and the rear slide bar 14; when the die is closed, the front sliding rod 13 and the rear sliding rod 14 both penetrate through the front die fixing plate 1 and the rear die fixing plate 4; mounting hole mold rods 10 are arranged on two sides of a threaded mold core 7 on the front mold core 2, limiting heads 11 are arranged at the tail parts of the mounting hole mold rods 10, the embedded blocks 8 are fixedly connected with the top plate 3 through connecting plates 12, through holes are arranged on two sides of the connecting plates 12, the diameter of the front ends of the through holes is smaller than that of the limiting heads 11 of the mounting hole mold rods 10, the diameter of the rear ends of the through holes is larger than that of the limiting heads 11 of the mounting hole mold rods 10, the mounting hole mold rods 10 are enabled to freely move in the through holes of the connecting plates 12 and not slide out, the front ends of the mounting hole mold rods 10 are arranged through the connecting plates 12, and the length of the mounting hole mold rods 10 is equal to the sum of; through holes corresponding to the connecting plates 12 are formed in the two sides of the embedded block 8, and the front end of the mounting hole mold rod 10 penetrates through the embedded block 8; the rear mold core 5 is provided with an injection mold cavity 9, the bottom plate 6 is provided with an ejector pin, and the ejector pin pushes against an injection molding piece stuck on the rear mold to make the injection molding piece fall off, so that the automatic falling-off process is realized.

When the mold is closed, the top plate 3 on the front mold is fixed, the front mold fixing plate 1 moves towards the rear mold, the rear mold moves towards the front mold, and the moving speed of the rear mold is greater than that of the front mold; the guide rod 16 and the guide hole 17 are respectively arranged on the front die fixing plate 1 and the rear die fixing plate 4, wherein the diameter of the guide hole 17 is larger than that of the guide rod 16, so that the guide rod 16 can be inserted into the guide hole 17 in the die closing process, and the die closing accuracy is improved; when the front mold and the rear mold are closed, raw materials are injected into the feeding holes 18 through the feeding holes 18 formed in the front mold core 2, and then are guided to the threaded mold core 7 and the accessory mold module through the drainage grooves 19, so that the raw materials are injected quickly, and the working efficiency is improved; when the mold is completely closed, the threaded mold core 7 is placed in the injection mold cavity 9 for injection molding, then, through the cooling hole 21 formed in the front mold core 2, cooling liquid is injected into the cooling hole 21 to cool the front mold core 2 on the front mold fixing plate 1, so that the injection molding piece is condensed, and the separation of the injection molding piece and the threaded mold core 7 is ensured; the front end of the insert 8 is thinner than the rear end and is narrower than the rear end, and the insert is arranged in the threaded mold core 7; the insert 8 is fixed on the top plate 3, and when the rear mold moves in the opposite direction in the demolding process, the front mold fixing plate 1 is driven to move towards the rear mold, at the moment, the insert 8 moves backwards in the threaded mold core 7, so that the threaded mold core 7 is enabled to automatically draw close, and the mounting hole mold rod 10 continues to move towards the rear mold direction along with the threaded mold core 7.

When in demoulding, the front mould and the rear mould are separated in opposite directions, the rear mould drives the front mould to move towards the movement direction of the rear mould, and at the moment, the insert 8 moves backwards in the threaded mould core 7, so that the threaded mould core 7 is automatically drawn together, the threaded mould core 7 is withdrawn for a distance before the mounting hole mould rod 10 is withdrawn due to the drawing action of the rear mould, and the mounting hole mould rod 10 plays a role in stabilizing an injection molding piece, so that the automatic core pulling action can be realized when the threaded mould core 7 is withdrawn from the injection mould cavity 9; at the moment, the injection molding is bonded on the rear mold, and the injection molding on the rear mold is pushed by the ejector pin arranged on the rear mold bottom plate 6, so that the injection molding falls off from the rear mold core 5, and automatic demolding is realized.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The utility model provides an internal thread injection molding mould, contains front mould and back mould, the front mould contains roof (3), front mould fixed plate (1) and preceding mold core (2), the back mould contains back mould fixed plate (4), back mold core (5) and bottom plate (6), characterized by: a sliding rod is arranged between the top plate (3) and the bottom plate (6), the front mold fixing plate (1) and the rear mold fixing plate (4) are arranged on the sliding rod, the front mold core (2) is arranged in the front mold fixing plate (1), and the rear mold core (5) is arranged in the rear mold fixing plate (4); a threaded mold core (7) is arranged on the front mold core (2), the threaded mold core (7) consists of two semicircular mold cores, and an insert block (8) is arranged in the threaded mold core (7); the threaded mold core (7) can move close to or apart from the front mold core (2), and is provided with an elastic part (20) to enable the threaded mold core to automatically close; the embedded block (8) is fixed on the top plate (3); an injection molding die cavity (9) is arranged on the rear die core (5), and a thimble is arranged on the bottom plate (6).

2. The internally threaded injection molding tool of claim 1 wherein: threaded mold core (7) both sides on preceding mold core (2) are equipped with mounting hole modular stem (10), mounting hole modular stem (10) afterbody is equipped with spacing head (11), abaculus (8) are through connecting plate (12) and roof (3) fixed connection, connecting plate (12) both sides are equipped with the through-hole, and through-hole front end diameter is less than spacing head (11) diameter of mounting hole modular stem (10), and through-hole rear end diameter is greater than spacing head (11) diameter of mounting hole modular stem (10), mounting hole modular stem (10) front end passes connecting plate (12) and sets up, the length of mounting hole modular stem (10) equals abaculus (8) and connecting plate (12) connection length sum.

3. The internally threaded injection molding tool of claim 1 wherein: a front sliding rod (13) is arranged on the top plate (3), a rear sliding rod (14) is arranged on the bottom plate (6), the front sliding rod (13) and the rear sliding rod (14) are arranged in a staggered mode, and sliding holes (15) of the front sliding rod (13) and the rear sliding rod (14) are formed in the front die fixing plate (1) and the rear die fixing plate (4); when the die is closed, the front sliding rod (13) and the rear sliding rod (14) both penetrate through the front die fixing plate (1) and the rear die fixing plate (4).

4. The internally threaded injection molding tool of claim 1 wherein: the front die fixing plate (1) and the rear die fixing plate (4) are respectively provided with a guide rod (16) and a guide hole (17), and the diameter of the guide hole (17) is larger than that of the guide rod (16).

5. The internally threaded injection molding tool of claim 2 wherein: the two sides of the embedded block (8) are provided with through holes corresponding to the connecting plate (12), and the front end of the mounting hole mold rod (10) penetrates through the embedded block (8).

6. The internally threaded injection molding tool of claim 1 wherein: and a feeding hole (18), a cooling hole (21) and a drainage groove (19) are formed in the front mold core (2), and the drainage groove (19) is connected to the threaded mold core.

7. The internally threaded injection molding tool of claim 1 wherein: the embedded block (8) is of a T-shaped structure, the front end of the embedded block (8) is thinner than the rear end, and the front end is narrower than the rear end.

8. The internally threaded injection molding tool of claim 1 wherein: the elastic piece (20) adopts a spring and is of a spiral structure.

Images