CN210705742U - a mold - Google Patents

Abstract

The utility model discloses a mold, which relates to the technical field of mold structures. The mold includes a front mold, a rear mold, several drill thread assemblies and several drive assemblies. The front mold has several concave cavities, and one end of each drill thread assembly is installed On the rear mold, the other end extends into each cavity and is enclosed with each cavity to form a cavity for forming a product. The end of the drill thread assembly extending into the cavity is provided with The first external thread of the first internal thread is processed and formed, and the driving component is connected with the drill thread component to drive the drill thread component to rotate forwardly or reversely. In this way, by using the mold with the above structure, each drill thread assembly extends into each concave cavity and is enclosed with each concave cavity to form a cavity for molding a product. After the product is injection molded, the driving component drives the drill thread assembly. Reverse and back, so that the first internal thread is formed on the product at one time, which simplifies the processing technology, reduces the production cost, and saves time and effort.

Description

a mold

technical field

The utility model relates to the technical field of mold structures, in particular to a mold.

Background technique

In the existing market, when it is necessary to form products with internal threads, the usual method is to form products without internal threads first, and then place the products without internal threads on a lathe for secondary processing. This processing method Although simple, it wastes time and virtually increases production costs.

Utility model content

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to solve the problem that in the existing market, when a product with an internal thread needs to be formed, a product without an internal thread is usually formed first, and then the secondary processing is performed on a lathe. Internal thread, which in turn increases the technical problem of production cost.

The utility model adopts the above technical scheme to realize:

The utility model provides a mold, comprising a front mold, a rear mold, several drill thread assemblies and several drive assemblies, the front mold has several concave cavities, and one end of each drill thread assembly is mounted on the The upper end and the other end of the rear mold respectively protrude into each of the concave cavities and are respectively enclosed with each of the concave cavities to form a cavity for forming a product. The end of the drill thread assembly protruding into the concave cavity The part is provided with a first external thread for forming a first internal thread on the product, and the driving component is connected with the drill thread component to drive the drill thread component to rotate forwardly or reversely.

Further, a side of the rear mold facing the front mold is provided with a number of accommodating cavities, and each of the accommodating cavities is provided with a drill thread assembly, and the drill thread assembly includes a guide seat, A rotating part and a shaft core member, the guide seat is fixed in the accommodating cavity, one end of the rotating part is threadedly connected with the guide seat, the other end is provided with the first external thread, and the middle part is connected to the drive Component transmission connection, the front mold also has a convex column protruding in the concave cavity, the shaft core member passes through the rotating part and extends and abuts on the convex column, the concave cavity , the convex column, the rotating part and the shaft core member are enclosed to form the cavity.

Further, a second outer thread is provided on the outer side wall of one end of the rotating member close to the guide seat, the guide seat is provided with an inner hole along the direction of its central axis, and the side wall of the inner hole is provided with a the second internal thread matched with the second external thread; and/or,

The drive assembly includes a power mechanism installed on the back mold and a transmission mechanism arranged between the power mechanism and the drill thread assembly, and the power mechanism is an air cylinder or a hydraulic cylinder or a motor and a screw drive pair The transmission mechanism includes a rack connected to the power mechanism and a gear assembly connected to the rack, and the middle of the rotating member is provided with a second external tooth meshing with the gear assembly.

Further, the shaft core member includes a shaft core and a forming block detachably mounted on one end of the shaft core, and the mold further includes a forming block arranged in the accommodating cavity for fixing the shaft core and preventing the A positioning assembly in which the shaft core rotates with the rotating member, the end of the shaft core close to the forming block is inserted into the rotating member, and the end of the shaft core away from the forming block is passed through the rotating member. The cavity, the convex column, the rotating piece and the forming block are enclosed to form the cavity.

Further, the positioning assembly includes a connecting rod and two clamping plates, the side wall of the shaft core has two oppositely arranged clamping grooves, and one end of the two clamping plates is installed on the back mold, The other ends are respectively clamped in the two card slots, and the two card plates are abutted against the guide seats, each of the two accommodating cavities is connected, and the two accommodating cavities that are in communication with each other are connected to each other. The two shaft cores in the cavity are connected by the connecting rod.

Further, the mold further includes a plurality of limit plates installed on the rear mold and located in each accommodating cavity, the limit plates are located on the side of the guide seat and abut against the guide seat to Used to limit the rotation of the guide seat.

Further, a side of the limiting plate facing the guide seat is provided with protruding teeth, and an outer side wall of the guide seat is provided with first external teeth matched with the protruding teeth.

Further, the mold further includes a plurality of support seats mounted on the rear mold and located in each of the accommodating cavities, and at least two of the support seats are rotatably sheathed outside each of the rotating parts, and wherein One of the support base and the clamping plate is respectively abutted against two axial ends of the guide base; and/or,

The back mold includes a first template group and a second template group, the second template group is set between the front mold and the first template group, the first template group and the second template group The accommodating cavity is formed by enclosing, and the limiting plate and the clamping plate are both mounted on the side of the second template group facing the first template group.

Further, the outer surface of the shaft core is provided with an oil groove for accommodating lubricating oil to reduce the friction between the rotating member and the shaft core.

Further, the number of the drill thread assemblies is four, the number of the drive assemblies is two, and each of the drive assemblies drives two of the drill thread assemblies to move at the same time.

Compared with the prior art, the beneficial effects of the present utility model are:

By adopting the mold with the above structure, each drill thread assembly extends into each cavity and is enclosed with each cavity to form a cavity for molding a product. When the product injection is completed, the driving component drives the drill thread assembly to reverse. Back, so that the first internal thread is formed on the product at one time, which simplifies the processing technology, reduces the production cost, and saves time and effort.

Description of drawings

1 is a schematic structural diagram of a mold provided by an embodiment of the present utility model;

Fig. 2 is the exploded schematic diagram of the mould provided by the utility model embodiment;

Fig. 3 is the partial enlarged schematic diagram of A place in Fig. 2;

4 is a schematic structural diagram of a product provided by an embodiment of the present invention;

5 is a schematic structural diagram of the rear mold provided by the embodiment of the present utility model after removing the drill thread assembly;

6 is an exploded schematic diagram of a rear mold provided by an embodiment of the present utility model;

Fig. 7 is a partial enlarged schematic diagram at B in Fig. 6;

FIG. 8 is a schematic structural diagram of the drill thread assembly, the support base, the drive assembly and the connecting rod after assembly;

Fig. 9 is the partial enlarged schematic diagram of C place in Fig. 8;

Fig. 10 is the exploded schematic diagram of Fig. 8;

11 is a schematic structural diagram of a rotating member provided by an embodiment of the present invention;

12 is a schematic structural diagram of an axial member provided by an embodiment of the present invention;

Figure 13 is a schematic structural diagram of the drilling thread assembly, the driving assembly and the positioning assembly being installed on the back mold;

FIG. 14 is a partial enlarged schematic view of the position D in FIG. 13 .

In the picture:

10. Front mold; 11. Concave cavity; 12. Convex column; 20. Back mold; 21. Receiving cavity; 22. First template group; 23. Second template group; 31, the guide seat; 311, the inner hole; 312, the second inner thread; 313, the first outer tooth; 32, the rotating part; 321, the first outer thread; 322, the second outer thread; 323, Second external tooth; 33, shaft member; 331, shaft core; 332, forming block; 333, oil groove; 334, card groove; 40, drive assembly; 41, power mechanism; 42, transmission mechanism; 421, rack; 422, gear assembly; 423, driving gear; 424, driven gear; 425, intermediate gear; 50, product; 51, cover body; 511, concave hole; 512, first internal thread; 52, boss; 60, positioning Component; 61, connecting rod; 62, card plate; 70, limit plate; 71, convex teeth; 80, support seat.

Detailed ways

Above, the present utility model is further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the above-described embodiments or technical features can be arbitrarily combined to form new implementations. example.

As shown in Figures 1-14, the present utility model discloses a mold, which includes a front mold 10, a rear mold 20, a plurality of drill thread assemblies 30, and a plurality of drive assemblies 40 mounted on the rear mold 20. The front mold 10 has a number of concave cavities 11, the side of the rear mold 20 facing the front mold 10 is provided with a number of accommodating cavities 21, each accommodating cavity 21 is provided with a drill thread assembly 30, one end of each drill thread assembly 30 They are all installed in the accommodating cavity 21 of the rear mold 20 , and the other end of each drill thread assembly 30 protrudes out of each accommodating cavity 21 and protrudes into each concave cavity 11 so as to be enclosed with each concave cavity 11 respectively. A cavity for forming the product 50 is formed. The end of the drill thread assembly 30 extending into the cavity 11 is provided with a first external thread 321 for forming the first internal thread 512 on the product 50. The driving assembly 40 and the The drill thread assembly 30 is connected to drive the drill thread assembly 30 to rotate forward or reverse. After the injection molding of the product 50 is completed, the driving assembly 40 drives the drill thread assembly 30 to reverse and retreat, thereby forming the first internal thread 512 on the product 50 at one time. , simplifies the processing technology, reduces the production cost, saves time and effort.

As shown in FIG. 4 , the product 50 to be formed by the mold provided by the embodiment of the present invention is a cover-shaped component having a first internal thread 512 . In this embodiment, the product 50 includes a cover body 51 with a concave hole 511 and a boss 52 protruding from the concave hole 511 in the cover body 51 , and a first internal thread 512 is provided on the inner side wall of the concave hole 511 ; , in the specific application, the mold provided by the embodiment of the present invention is not limited to this specific structure, but as long as it is a component with the first internal thread 512, for example, the product 50 may not have the boss 52, but only includes a Threaded cover body 51 .

In this embodiment, the number of drill thread assemblies 30 is four, and the number of driving assemblies 40 is two, and each drive assembly 40 drives two drill thread assemblies 30 to move at the same time. Product 50 with an internal thread 512 .

As shown in Figures 5-10, in this embodiment, the drive assembly 40 includes a power mechanism 41 and a transmission mechanism 42. The power mechanism 41 may be a combination of a cylinder or a hydraulic cylinder or a motor and a screw drive pair. The mechanism 41 is preferably an air cylinder, the power mechanism 41 is installed on the top of the rear mold 20, the transmission mechanism 42 is arranged between the power mechanism 41 and the drill thread assembly 30, and the transmission mechanism 42 includes a rack 421 and a gear assembly connected to the rack 421 for transmission 422, the gear assembly 422 is arranged in the accommodating cavity 21, one end of the rack 421 is arranged outside the rear mold 20, and the other end of the rack 421 extends into the accommodating cavity 21 to connect with the power mechanism 41, in order to prevent the rack 421 breaks during operation. In this embodiment, a guide rail 24 is also provided on the rack 421 along its length direction, a fixed block 25 is provided on the side wall of the mold, and the fixed block 25 is provided with the guide rail 24. The guide rails 24 are installed in the corresponding chute.

The gear assembly 422 includes a driving gear 423 meshed with the rack 421, a driven gear 424 meshed with the middle of the drill thread assembly 30, and an intermediate gear 425 disposed between the driving gear 423 and the driven gear 424. This embodiment The number of the intermediate gears 425 in the example is uncertain, and the intermediate gears 425 are all connected in sequence, and the number can be set according to the actual transmission needs.

As shown in FIG. 11 , the drill thread assembly 30 includes a guide seat 31 , a rotating member 32 and a shaft member 33 . The guide seat 31 is fixed in the accommodating cavity 21 , the shaft member 33 is arranged in the accommodating cavity 21 , and the rotating member 32 One end of the rotating member 32 is threadedly connected with the guide seat 31, the other end of the rotating member 32 is provided with a first external thread 321, and the middle of the rotating member 32 is drivingly connected with the driving assembly 40. Specifically, the middle of the rotating member 32 is provided with a gear assembly 422. The second external teeth 323 meshing with annular structure, in order to prevent the second external teeth 323 from disengaging from the gear assembly 422 when the rotating member 32 moves, the thickness of the second external teeth 323 is smaller than that of the driven gear 424 . The front mold 10 also has a convex column 12 protruding from the concave cavity 11 , the axial member 33 is penetrated in the rotating member 32 and extends and abuts on the convex column 12 . The concave cavity 11 , the convex column 12 , the rotating member 32 and The shaft member 33 encloses the above-mentioned cavity, and the shaft member 33 has the function of being supported on the rotating member 32 .

In the specific implementation process, when the front mold 10 and the rear mold 20 are clamped, the shaft member 33 abuts on the convex column 12, and after the injection molding is completed, the power mechanism 41 drives the rotating member 32 relative to the rear mold through the transmission mechanism 42. 20 rotates, the rotating member 32 is threadedly connected with the guide base 31, and the guide base 31 is fixed on the rear mold 20, so the rotating member 32 also moves relative to the rear mold 20 while rotating, relying on the first outer mold on the rotating member 32. The thread 321 can be processed into the first internal thread 512 on the product 50, and then the mold can be opened.

As shown in FIG. 12 , the shaft member 33 includes a shaft core 331 and a forming block 332 . The forming block 332 is detachably mounted on one end of the shaft core 331 , and the mold further includes a accommodating cavity 21 for fixing the shaft core 331 and The positioning assembly 60 to prevent the shaft core 331 from rotating with the rotating member 32 , the end of the shaft core 331 close to the forming block 332 is inserted into the rotating member 32 , and the end of the shaft core 331 away from the forming block 332 is passed out of the rotating member 32 And connected with the positioning assembly 60, the cavity 11, the convex column 12, the rotating member 32 and the molding block 332 are enclosed to form a cavity.

As a preferred embodiment, the positioning assembly 60 includes a connecting rod 61 and two clamping plates 62 , the side wall of the shaft core 331 has two oppositely arranged clamping grooves 334 , and one end of the two clamping plates 62 is installed on the rear mold 20 The upper end and the other end are respectively clamped in the two clamping grooves 334 to prevent the guide seat 31 from being displaced in the mold, and the two clamping plates 62 abut against the guide seat 31. The cavities 21 communicate with each other, and the two shaft cores 331 in the two interconnected accommodating cavities 21 are connected by a connecting rod 61 .

As a preferred embodiment, the outer surface of the shaft core 331 is provided with a helical oil groove 333 for accommodating lubricating oil to reduce friction between the shaft core 331 and the rotating member 32 .

As shown in FIGS. 13-14 , as a preferred embodiment, the mold further includes a plurality of limit plates 70 mounted on the rear mold 20 and disposed in each accommodating cavity 21 to limit the rotation of the guide seat 31 . The limit plates 70 It is located on the side of the guide seat 31 and abuts on the guide seat 31 .

Specifically, a linear convex tooth 71 is provided on the side of the limiting plate 70 facing the guide seat 31 , and the outer side wall of the guide seat 31 is provided with an annular first external tooth 313 which is matched with the convex tooth 71 . 71 and the first external teeth 313 mesh with each other, so that when the rotating member 32 rotates, the limiting plate 70 can effectively prevent the guide base 31 from rotating with the rotating member 32, so that the rotational power of the rotating member 32 can be converted into linear motion.

Preferably, a second outer thread 322 is provided on the outer side wall of one end of the rotating member 32 close to the guide seat 31 , the guide seat 31 is an annular connecting member, and the guide seat 31 is provided with an inner hole 311 along its central axis. The side wall is provided with a second inner thread 312 matched with the second outer thread 322 .

The rear mold 20 includes a first template group 22 and a second template group 23. The first template group 22 and the second template group 23 are both formed by combining several templates. The second template group 23 is provided on the front mold 10 and the first template. Between the groups 22, the first template group 22 and the second template group 23 are both provided with cavities, and the cavity on the first template group 22 and the cavity on the second template group 23 are enclosed to form the above-mentioned accommodating cavity 21. Both the limiting plate 70 and the clamping plate 62 are installed on the side of the second template group 23 facing the first template group 22 .

In order to better position the rotating member 32 , as a preferred embodiment, in this embodiment, the mold further includes a plurality of support seats 80 installed on the rear mold 20 and located in each accommodating cavity 21 , and each rotating member 32 can be rotated outside. At least two supporting seats 80 are sheathed, and one of the supporting seats 80 and the clamping plate 62 is respectively abutted against the axial ends of the guide seat 31 to limit the axial position of the guide seat 31, and is sheathed outside the rotating member 32. The remaining support bases 80 have the function of supporting the rotating member 32 .

Each support base 80 is sleeved on the outer wall of each rotating member 32 , and the rotating member 32 is rotatably connected to the support base 80 .

The working principle of the mold of the present utility model is as follows: the injection molding machine first performs mold clamping, and after the injection and melt glue is injected into the cavity, the power mechanism 41 drives the rotating member 32 to rotate through the rack 421 and the gear assembly 422. The seat 31 is threaded, so the rotating member 32 also moves relative to the back mold 20 when it rotates. At the same time, when moving, the first external thread 321 on the other end of the rotating member 32 processes the first internal thread on the product 50 512 , after the rotating member 32 is separated from the product 50 , the product 50 can be taken out after the mold is opened, which is the final product 50 . The driving components 40 on the mold can drive the two rotating members 32 to rotate at the same time, and the number of the driving components 40 is two. Therefore, the mold can mold four products 50 at one time.

To sum up, by using the mold with the above structure, each drill thread assembly 30 extends into each concave cavity 11 and surrounds each concave cavity 11 to form a cavity for molding the product 50 . When the product 50 is injection molded Afterwards, the driving assembly 40 drives the drilling thread assembly 30 to reverse and retreat, thereby forming the first internal thread 512 on the product 50 at one time, which simplifies the processing process, reduces the production cost, and saves time and effort.

The following embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited by this. Any insubstantial changes and replacements made by those skilled in the art on the basis of the present invention are It belongs to the protection scope of the present invention.

Claims (10)

1. a mould is characterized in that: comprise front mould, rear mould, several drill thread assemblies and several drive assemblies, described front mould has several concave cavities, and one end of each described drill thread assemblies is installed in all The upper end and the other end of the back mold respectively protrude into each of the concave cavities and are respectively enclosed with each of the concave cavities to form a cavity for forming a product. The end is provided with a first external thread for forming a first internal thread on the product, and the driving component is connected with the drill thread component to drive the drill thread component to rotate forwardly or reversely. 2 . The mold according to claim 1 , wherein a side of the rear mold facing the front mold is provided with a plurality of accommodating cavities, and each of the accommodating cavities is provided with one of the drills. 3 . A thread assembly, the drill thread assembly includes a guide seat, a rotating part and a shaft core member, the guide seat is fixed in the accommodating cavity, one end of the rotating part is threadedly connected with the guide seat, and the other end is provided with The first external thread and the middle part are connected with the drive assembly in a transmission manner, the front mold also has a convex column protruding in the cavity, and the shaft core member is penetrated in the rotating member and extends against Connected to the protruding post, the cavity, the protruding post, the rotating member and the shaft core member are enclosed to form the cavity. 3 . The mold according to claim 2 , wherein a second outer thread is provided on the outer side wall of one end of the rotating member close to the guide seat, and the guide seat is provided with an inner hole along the direction of the center axis. 4 . , the side wall of the inner hole is provided with a second inner thread matched with the second outer thread; and/or, The drive assembly includes a power mechanism installed on the back mold and a transmission mechanism arranged between the power mechanism and the drill thread assembly, and the power mechanism is an air cylinder or a hydraulic cylinder or a motor and a screw drive pair The transmission mechanism includes a rack connected to the power mechanism and a gear assembly connected to the rack, and the middle of the rotating member is provided with a second external tooth meshing with the gear assembly. 4. The mold according to claim 2 or 3, wherein the shaft core member comprises a shaft core and a forming block detachably mounted on one end of the shaft core, and the mold further comprises a a positioning component in the cavity for fixing the shaft core and preventing the shaft core from rotating with the rotating member, the end of the shaft core close to the forming block is penetrated in the rotating member, the The end of the shaft core away from the forming block passes out of the rotating member and is connected with the positioning component, and the cavity, the convex column, the rotating member and the forming block are enclosed to form the forming cavity. 5 . The mold according to claim 4 , wherein the positioning assembly comprises a connecting rod and two clamping plates, the side wall of the shaft core has two oppositely arranged clamping grooves, and the two clamping One end of the plate is installed on the back mold, and the other end is respectively clamped in the two card slots, and the two card plates are abutted against the guide seat, and each two of the accommodating cavities are connected to each other. The two shaft cores in the two accommodating cavities that communicate with each other are connected by the connecting rod. 6 . The mold according to claim 5 , wherein the mold further comprises a plurality of limit plates mounted on the rear mold and located in each accommodating cavity, and the limit plates are located on the guide seat. 7 . The side of the guide seat is in contact with the guide seat to limit the rotation of the guide seat. 7 . The mold according to claim 6 , wherein the side of the limiting plate facing the guide seat is provided with protruding teeth, and the outer side wall of the guide seat is provided with the protruding teeth to cooperate with the protruding teeth. 8 . of the first external teeth. 8. The mold according to claim 7, characterized in that: the mold further comprises a plurality of support seats mounted on the rear mold and located in each of the accommodating cavities, and each of the rotating parts can be At least two of the support bases are rotated in the sleeve, and one of the support bases and the clamping plate are respectively abutted against both axial ends of the guide base; and/or, The back mold includes a first template group and a second template group, the second template group is set between the front mold and the first template group, the first template group and the second template group The accommodating cavity is formed by enclosing, and the limiting plate and the clamping plate are both mounted on the side of the second template group facing the first template group. 9 . The mold according to claim 4 , wherein the outer surface of the shaft core is provided with an oil groove for accommodating lubricating oil to reduce friction between the rotating member and the shaft core. 10 . 10. The mold according to any one of claims 1 to 3, wherein the number of the drill thread components is four, the number of the driving components is two, and each of the driving components simultaneously drives two one of the drill thread assemblies moves.

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