CN214395232U - Rotary core-pulling injection mold - Google Patents

Abstract

The utility model provides a rotatory injection mold of loosing core, including rotatory mechanism of loosing core, rotatory mechanism of loosing core includes rotatory chipware, the rotation axis, the universal driving shaft, actuating lever and hydro-cylinder, rotatory chipware has interconnect's crotch core head and core, the movable mould core setting can be salient to the crotch core head, the both ends of rotation axis are fixed on moving the mould core, the axial perpendicular to of rotation axis direction that opens and shuts, the core is rotationally established on the rotation axis, and the core has seted up first arc wall, the linkage shaft passes first arc wall and can slide in first arc wall, the axial direction of universal driving shaft is on a parallel with the axial of rotation axis, the first end and the universal driving shaft of actuating lever are connected, the second end of actuating lever is connected with the piston rod of hydro-cylinder, the hydro-cylinder is installed in the outside of moving die board and is controlled the actuating lever and is removed in the first direction, the first direction sets up the slope of relatively opening the compound die direction. The rotary core-pulling injection mold is simple and compact in structure, convenient to install and disassemble, capable of shortening the production period of the mold and high in production efficiency.

Description

Rotary core-pulling injection mold

Technical Field

The utility model relates to an injection moulding production technical field especially relates to a rotatory injection mold of loosing core.

Background

As shown in fig. 1 and 2, the fuel tank cover 1 has a hook cavity 11, and inner walls of two opposite side surfaces of the hook cavity 11 are provided with inner fastening holes 12. When the injection mold is used for producing the oil tank cover body 1 in an injection molding mode, due to the fact that the hook inner cavity 11 and the inner buckling hole 12 exist, demolding is difficult after product forming, and the product can be assembled and formed only after split manufacturing, so that the production and manufacturing process becomes complicated, the production efficiency is reduced, the manufacturing cost is greatly increased, and popularization and use are not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a simple structure and high rotatory injection mold of loosing core of production efficiency.

In order to realize the main purpose of the utility model, the utility model provides a rotary core-pulling injection mold, which comprises a fixed mold plate and a movable mold plate which are sequentially arranged in the mold opening and closing direction, the end surface of the fixed mold plate close to the movable mold plate is provided with a fixed mold core, the end surface of the movable mold plate close to the fixed mold plate is provided with a movable mold core, the rotary core-pulling injection mold also comprises a rotary core-pulling mechanism, the rotary core-pulling mechanism comprises a rotary core piece, a rotating shaft, a linkage shaft, a driving rod and an oil cylinder, the rotary core piece is provided with a hook core head and a core body which are mutually connected, the hook core head can protrude out of the movable mold core, two ends of the rotating shaft are fixed on the movable mold core, the axial direction of the rotating shaft is vertical to the mold opening and closing direction, the core body is rotatably sleeved on the rotating shaft, the core body is provided with a first arc-shaped groove, the linkage shaft passes through the first arc-shaped groove and can slide in the first arc-shaped groove, the axial direction of the linkage shaft is parallel to the axial direction of the rotating shaft, the first end of the driving rod is connected with the linkage shaft, the second end of the driving rod is connected with a piston rod of an oil cylinder, the oil cylinder is installed on the outer side of the movable mold plate and controls the driving rod to move in a first direction, the first direction is obliquely arranged relative to the mold opening and closing direction, and a cavity can be formed among the fixed mold core, the movable mold core and the hook core head.

According to a further scheme, the rotary core pulling mechanism further comprises a guide rod and two support plates, the cross section of the guide rod is in an arc shape, a second arc-shaped groove is formed in the side face of each support plate, the two support plates are located on two sides of the rotary core piece respectively in the axial direction of the rotary shaft, the two second arc-shaped grooves of the two support plates are arranged oppositely, two ends of the guide rod penetrate through the rotary core piece respectively and are inserted into the two second arc-shaped grooves in a sliding mode respectively, and the guide rod and the rotary shaft are arranged coaxially.

It is still further preferred that the rotary core member has a first core member and a second core member, the first core member and the second core member are locked together by a bolt to form the rotary core member, the two ends of the linkage shaft respectively pass through the first arc-shaped slots of the first core member and the second core member, and the first end of the driving rod is located between the first core member and the second core member.

The core pulling mechanism further comprises a positioning shaft, the positioning shaft penetrates through the first core piece and the second core piece, the axial direction of the positioning shaft is parallel to the axial direction of the rotating shaft, and the positioning shaft is located between the rotating shaft and the guide rod in the radial direction of the rotating shaft.

According to a further scheme, a limit groove is formed in the end face, close to the fixed mold core, of the movable mold core, the driving rod penetrates through the limit groove, the bottom face of the limit groove is an inclined face, and the inclined face extends in the first direction.

In a further scheme, the peripheral surface of the second end of the driving rod is convexly provided with a stop block, and the stop block can abut against the side surface of the movable mold core.

The further proposal is that the rotary core-pulling injection mold also comprises a supporting plate and an inner-buckling core-pulling mechanism, the supporting plate is positioned on one side of the movable mold plate far away from the fixed mold plate in the mold opening and closing direction, the inner-buckling core-pulling mechanism comprises an inclined guide post, a driving seat, a sliding insert, an elastic piece, a first inner-buckling insert and two second inner-buckling inserts, the first end of the driving seat is fixed on the supporting plate, the second end of the driving seat penetrates through the movable mold core, the inclined guide post is obliquely arranged relative to the mold opening and closing direction, the first end of the inclined guide post is arranged on the driving seat, the second end of the inclined guide post is slidably inserted into the sliding insert and can enable the sliding insert to move in the second direction, the second direction is respectively vertical to the mold opening and closing direction and the axial direction of the rotating shaft, the sliding insert is positioned between the first core piece and the second core piece, the first end of the sliding insert is provided with a first chute which obliquely extends relative to the mold opening and closing direction, one end of the first inner buckle insert is provided with a first slide rail which is matched with the first slide groove in a sliding way, two opposite side surfaces of the first inner buckle insert are respectively provided with a second slide rail which is obliquely extended relative to the mould opening and closing direction, the first side surface of each second inner buckle insert is provided with a second slide groove, one second slide groove is matched with one second slide rail in a sliding way, the second side surface of each second inner buckle insert opposite to the first side surface is convexly provided with an inner buckle core, the matching ends of the two inner buckle cores can respectively penetrate through and protrude the first core piece and the second core piece, the sliding insert is provided with a third slide groove, the third slide groove extends along the second direction, two bolts which connect the first core piece and the second core piece penetrate through the third slide groove, the two bolts are arranged side by side in the second direction, the elastic piece forces the sliding insert to move away from the rotary core piece, and the fixed mold core piece and the movable mold core piece are arranged side by side, A cavity can be formed among the hook core head, the second end of the driving seat and the matching ends of the two inner buckling cores.

The elastic piece is a reset spring, a first limiting hole is formed in the side face, close to the first core piece, of the sliding insert, a second limiting hole is formed in the side face, close to the sliding insert, of the first core piece, the reset spring is located in the first limiting hole and the second limiting hole, and the axial directions of the first limiting hole and the second limiting hole are parallel to the second direction.

The second end surface of the driving seat is provided with an accommodating groove, the accommodating groove extends in the axial direction of the inclined guide pillar, the inclined guide pillar is located in the accommodating groove, and the second end of the sliding insert is slidably matched in the accommodating groove.

According to a further scheme, the rotary core pulling mechanism further comprises a limiting seat, a first end of the limiting seat is fixed on the supporting plate, a second end of the limiting seat can be inserted into the movable mold core, a groove is formed in a second end face of the limiting seat, and the driving rod penetrates through the groove.

It can be seen from the above solution that, the rotary core-pulling injection mold of the present invention adopts a rotary core-pulling mechanism, both ends of a rotary shaft of the rotary core-pulling mechanism are fixed on a movable mold core, the axial direction of the rotary shaft is perpendicular to the mold opening and closing direction, the rotary core piece has a hook core head and a core body which are connected with each other, the core body is rotatably sleeved on the rotary shaft, and the core body is provided with a first arc-shaped groove, a linkage shaft passes through the first arc-shaped groove and can slide in the first arc-shaped groove, the axial direction of the linkage shaft is parallel to the axial direction of the rotary shaft, a first end of a driving rod is connected with the linkage shaft, a second end of the driving rod is connected with a piston rod of an oil cylinder, the oil cylinder is installed outside the movable mold plate and controls the driving rod to move in the first direction, the first direction is inclined with respect to the mold opening and closing direction, the rotary core-pulling demolding of the rotary core piece is realized by the linkage shaft sliding in the first arc-shaped groove through the movement and the driving rod in the first direction, the structure is obviously simplified, the manufacturing and maintenance cost of the die is reduced, and the production period of the die is shortened; and the rotary core pulling mechanism only needs to perform core pulling action through one oil cylinder, the whole core pulling process is completed at one step, the production period of the plastic product is shortened, and the production efficiency is improved. And simultaneously, the utility model discloses rotatory injection mold of loosing core's rotatory mechanism of loosing core's simple structure is compact, easy to assemble and dismantlement.

Furthermore, the utility model discloses rotatory injection mold of loosing core is through increasing interior knot mechanism of loosing core on the basis of rotatory mechanism of loosing core, the interior knot is loosed core the oblique guide pillar of mechanism of loosing core and is opened the mould direction slope setting relatively, insert in the slip mold insert and can make the slip mold insert move in the second direction in the second end slidable of oblique guide pillar, the first interior knot mold insert assembles on the slip mold insert through first slide rail and first spout cooperation slidable, two second interior knot mold inserts assemble on the relative both sides face of first interior knot mold insert through second slide rail and second spout cooperation slidable, can run through and bulge first chipware and second chipware setting respectively the cooperation end of the interior knot core of two second interior knot mold inserts, two bolts that connect first chipware and second chipware run through the third spout setting of slip mold insert, the elastic component forces the slip mold insert to keep away from rotatory chipware and move, through oblique guide pillar, The first sliding groove and the second sliding rail are obliquely arranged relative to the opening and closing direction of the mold to realize core-pulling and demolding of the inner buckling cores of the two second inner buckling inserts, the production period of the mold is shortened, and the production efficiency is improved.

Drawings

Fig. 1 is a first view structural view of a fuel tank cover.

Fig. 2 is a second perspective view of the fuel tank cover.

Fig. 3 is the utility model relates to a structure chart of rotatory injection mold of loosing core embodiment.

Fig. 4 is a first partial structure diagram of an embodiment of the rotary core-pulling injection mold of the present invention.

Fig. 5 is a second partial structure diagram of the rotary core-pulling injection mold of the utility model.

Fig. 6 is an assembly view of the rotary core-pulling mechanism and the inside buckle core-pulling mechanism in the embodiment of the rotary core-pulling injection mold of the present invention.

Fig. 7 is an exploded view of the rotary core-pulling mechanism in the embodiment of the rotary core-pulling injection mold of the present invention.

Fig. 8 is a partial exploded view of the rotary core-pulling mechanism and the inner buckle core-pulling mechanism of the embodiment of the rotary core-pulling injection mold of the present invention.

Fig. 9 is an exploded view of an inner buckle core pulling mechanism in an embodiment of a rotary core pulling injection mold of the present invention.

Fig. 10 is a structural view of a first core member in an embodiment of the rotary core-pulling injection mold according to the present invention.

Fig. 11 is a cross-sectional view of the rotary core-pulling mechanism and the inside buckle core-pulling mechanism in the first working state according to the embodiment of the present invention.

Fig. 12 is a cross-sectional view of the rotary core-pulling mechanism and the inside buckle core-pulling mechanism in the second operating state according to the embodiment of the present invention.

Fig. 13 is a side view of the rotary core-pulling mechanism and the inside buckle core-pulling mechanism in a third operating state according to the embodiment of the present invention.

Fig. 14 is a structural diagram of a rotary core-pulling mechanism and an inside-buckle core-pulling mechanism in a third operating state according to an embodiment of the present invention.

Detailed Description

Referring to fig. 3 to 6, the present embodiment discloses a rotary core-pulling injection mold 2, which includes a fixed mold plate 21, a movable mold plate 22, and a supporting plate 23 sequentially arranged in a mold opening and closing direction, that is, the supporting plate 23 is located on one side of the movable mold plate 22 away from the fixed mold plate 21 in the mold opening and closing direction, a fixed mold core 24 is disposed on an end surface of the fixed mold plate 21 close to the movable mold plate 22, and a movable mold core 25 is disposed on an end surface of the movable mold plate 22 close to the fixed mold plate 21. The rotary core-pulling injection mold 2 of the embodiment further comprises a rotary core-pulling mechanism 26 and an inner-buckle core-pulling mechanism 27, wherein the rotary core-pulling mechanism 26 is used for core-pulling and demolding of the hook inner cavity 11 of the oil tank cover body 1, and the inner-buckle core-pulling mechanism 27 is used for core-pulling and demolding of the inner buckle holes 12 in the inner walls of the two opposite side surfaces of the hook inner cavity 11.

Referring to fig. 7 to 10, the rotary core-pulling mechanism 26 includes a rotary core 264, a rotary shaft 263, a linkage shaft 268, a driving rod 269 and a cylinder 261, the rotary core 264 has hook core heads 26411, 26421 and core bodies 26412, 26422 connected to each other, and the hook core heads 26411, 26421 may be provided to protrude from the movable core 25. The two ends of the rotating shaft 263 are fixed on the movable mold core 25, the axial direction of the rotating shaft 263 is perpendicular to the mold opening and closing direction, the core bodies 26412, 26422 are rotatably sleeved on the rotating shaft 263, the core bodies 26412, 26422 are provided with first arc-shaped grooves 2610, the linkage shaft 268 passes through the first arc-shaped grooves 2610 and can slide in the first arc-shaped grooves 2610, and the axial direction of the linkage shaft 268 is parallel to the axial direction of the rotating shaft 263. A first end of a driving rod 269 is connected to the linkage shaft 268, a second end of the driving rod 269 is connected to a piston rod of an oil cylinder 261, and the oil cylinder 261 is installed outside the movable die plate 22 and controls the driving rod 269 to move in a first direction, which is inclined with respect to the die opening and closing direction. A cavity may be formed between the stationary mold core 24, the movable mold core 25, and the hook core heads 26411, 26421.

Specifically, the rotary core pulling mechanism 26 of this embodiment further includes a guide rod 265 and two support plates 266, the cross section of the guide rod 265 is disposed in an arc shape, and a second arc-shaped slot 2661 is opened on a side surface of each support plate 266. In the axial direction of the rotating shaft 263, the two support plates 266 are located on both sides of the rotating core member 264, respectively, and the two second arc-shaped grooves 2661 of the two support plates 266 are disposed oppositely. Both ends of the guide rod 265 respectively penetrate through the rotary core 264 and are slidably inserted into the two second arc-shaped grooves 2661 respectively, and the guide rod 265 is disposed coaxially with the rotary shaft 263. Here, the rotary core piece 264 of this embodiment has a first core piece 2641 and a second core piece 2642, the rotary core piece 264 is formed by locking the first core piece 2641 and the second core piece 2642 by bolts, both ends of the linkage shaft 268 respectively pass through the first arc-shaped grooves 2610 of the first core piece 2641 and the second core piece 2642, and the first end of the driving rod 269 is located between the first core piece 2641 and the second core piece 2642.

The rotary core-pulling mechanism 26 of the present embodiment further includes a positioning shaft 267, the positioning shaft 267 is disposed through the first core member 2641 and the second core member 2642, and an axial direction of the positioning shaft 267 is parallel to an axial direction of the rotary shaft 263. In the radial direction of the rotating shaft 263, the positioning shaft 267 is located between the rotating shaft 263 and the guide rod 265. The end face of the movable mold core 25 close to the fixed mold core 24 is provided with a limiting groove 251, the driving rod 269 penetrates through the limiting groove 251, the bottom surface of the limiting groove 251 is an inclined surface, and the inclined surface extends in the first direction. A stop block 2691 is convexly arranged on the second end peripheral surface of the driving rod 269, and the stop block 2691 can abut against the side surface of the movable mold core 25. The rotary core-pulling mechanism 26 of the embodiment further comprises a limiting seat 262, a first end of the limiting seat 262 is fixed on the supporting plate 23, a second end of the limiting seat 262 can be inserted into the movable mold core 25, a groove 2621 is formed in a second end surface of the limiting seat 262, and the driving rod 269 penetrates through the groove 2621.

The inside-threading core-pulling mechanism 27 of the present embodiment includes an inclined guide post 272, a driving seat 271, a sliding insert 273, an elastic member 276, a first inside-threading insert 274 and two second inside-threading inserts 275, wherein a first end of the driving seat 271 is fixed on the driving seat 271, and a second end of the driving seat 271 penetrates through the movable mold core 25. The tilt guide post 272 is disposed to be tilted with respect to the mold opening and closing direction, and a first end of the tilt guide post 272 is disposed on the driving base 271, and a second end of the tilt guide post 272 is slidably inserted into the slide insert 273 and can move the slide insert 273 in a second direction, which is perpendicular to the mold opening and closing direction and the axial direction of the rotating shaft 263, respectively. The slide insert 273 is located between the first core piece 2641 and the second core piece 2642, a first end of the slide insert 273 is provided with a first slide groove 2732 extending obliquely to the mold opening and closing direction, one end of the first inside-fastening insert 274 is provided with a first slide rail 2741, and the first slide rail 2741 is slidably engaged with the first slide groove 2732. Two opposite side surfaces of the first inside-out insert 274 are respectively provided with a second slide rail 2742 extending obliquely to the mold opening and closing direction, a first side surface of each second inside-out insert 275 is provided with a second slide groove 2751, and one second slide groove 2751 is slidably matched with one second slide rail 2742. A second side of each second internally-buckled insert 275 opposite to the first side is convexly provided with an internally-buckled core 2752, and mating ends of the two internally-buckled cores 2752 may be respectively arranged to penetrate through and protrude from the first core piece 2641 and the second core piece 2642. The slide insert 273 has a third slide groove 2731, the third slide groove 2731 extends in the second direction, two bolts 2612 connecting the first core piece 2641 and the second core piece 2642 are disposed through the third slide groove 2731, and the two bolts 2612 are disposed side by side in the second direction. The resilient member 276 urges the sliding insert 273 away from the rotary core member 264 to form a cavity between the mating ends of the stationary core 24, the movable core 25, the hook core heads 26411, 26421, the second end of the driving seat 271, and the two inner cores 2752.

Specifically, the elastic member 276 of this embodiment is a return spring 276, a first limiting hole is formed in a side surface of the sliding insert 273, which is close to the first core member 2641, a second limiting hole 2611 is formed in a side surface of the first core member 2641, which is close to the sliding insert 273, the return spring 276 is located in the first limiting hole and the second limiting hole 2611, and axial directions of the first limiting hole and the second limiting hole 2611 are parallel to the second direction. The second end surface of the driving seat 271 defines an accommodating groove 2711, the accommodating groove 2711 extends in the axial direction of the inclined guide post 272, the inclined guide post 272 is located in the accommodating groove 2711, and the second end of the sliding insert 273 is slidably fitted in the accommodating groove 2711.

Referring to fig. 11, the rotary core-pulling injection mold 2 performs a mold opening operation in a mold opening and closing direction, the supporting plate 23 controls the driving seat 271 to drive the inclined guide post 272 to move away from the sliding insert 273, and since the inclined guide post 272 is inclined with respect to the mold opening and closing direction, the second end of the inclined guide post 272 slides out of the sliding insert 273 and simultaneously the sliding insert 273 moves in the second direction. As the slide insert 273 moves in the second direction, the first inside-hooking insert 274 slides in the tilt direction of the first slide groove 2732 with respect to the slide insert 273, and simultaneously, the two second inside-hooking inserts 275 slide in the tilt direction of the second slide groove 2742 with respect to the first inside-hooking insert 274, so that the inside-hooking cores 2752 on the two second inside-hooking inserts 275 are retracted into the first core piece 2641 and the second core piece 2642, thereby completing the core-pulling and mold-releasing of the inside-hooking holes 12 on the two opposite side inner walls of the hook inner cavity 11 of the tank cap 1.

Referring to fig. 12, as the driving seat 271 is controlled by the supporting plate 23 to move the tilting guide column 272 away from the sliding insert 273, the second end of the tilting guide column 272 is completely withdrawn and separated from the sliding insert 273, and the return spring 276 is in the elastic return state, since two bolts 2612 connecting the first core piece 2641 and the second core piece 2642 are disposed through the third slide slot 2731 of the sliding insert 273, thereby keeping the sliding insert 273 between the first core piece 2641 and the second core piece 2642.

Referring to fig. 13 and 14, after the inside-buckle core-pulling mechanism 27 completes core-pulling and demolding of the inside-buckle holes 12 on the two opposite side surfaces of the hook cavity 11 of the oil tank cover 1, the piston rod of the oil cylinder 261 controls the driving rod 269 to move in the first direction, the driving rod 269 drives the linking shaft 268 to slide in the first arc-shaped groove 2610 of the first core piece 2641 and the second core piece 2642, that is, the linking shaft 268 slides from the first end to the second end of the first arc-shaped groove 2610, so that the linking shaft 268 drives the first core piece 2641 and the second core piece 2642 to synchronously rotate around the rotating shaft 263 to perform core-pulling and demolding of the hook cavity 11 of the oil tank cover 1, and synchronously, the two ends of the guide rod 265 respectively slide in the second arc-shaped grooves 2661 of the two supporting plates 266266, that is, the two ends of the guide rod 265 respectively slide from the first end to the second end in the second arc-shaped grooves 2661 of the two supporting plates 266266, and the sliding inserts 273 are retained in the first core piece 2641 and the second core piece 2642, A return spring 276, a first snap-in insert 274 and two second snap-in inserts 275. When the driving rod 269 drives the linking shaft 268 to slide to the second end of the first arc-shaped groove 2610, the first core piece 2641 and the second core piece 2642 synchronously rotate around the rotating shaft 263 to the full core-pulling demolding position, and the hook core heads 26411, 26421 of the first core piece 2641 and the second core piece 2642 completely separate from the hook inner cavity 11 of the oil tank cover 1, so that core-pulling demolding of the hook inner cavity 11 of the oil tank cover 1 is completed.

The utility model discloses rotatory injection mold 2 of loosing core adopts rotatory mechanism 26 of loosing core, the both ends of rotatory rotation axis 263 of the mechanism 26 of loosing core are fixed on moving mold core 25, the axial perpendicular to of rotation axis 263 mould direction that opens and shuts, rotatory chipware 264 has interconnect's crotch core head 26411, 26421 and core 26412, 26422, core 26412, 26422 rotationally overlap on rotation axis 263, and core 26412, first arc wall 2610 has been seted up to 26422, linkage 268 passes first arc wall 2610 and can slide in first arc wall 2610, linkage 268's axial direction is on parallel with the axial of rotation axis 263, the first end and the linkage 268 of actuating lever 269 are connected, the second end of actuating lever 269 is connected with the piston rod of hydro-cylinder 261, hydro-cylinder 261 installs in the outside of moving mold plate 22 and control actuating lever 269 removes in the first direction, the slope of mould direction relative opening direction sets up, linkage 268 slides in first arc wall 2610 and realizes the rotatory chipware 264 through actuating lever 269 on the cooperation of first direction removal The core is pulled and the mold is demolded, so that the structure is obviously simplified, the manufacturing and maintenance cost of the mold is reduced, and the production period of the mold is shortened; and the rotary core-pulling mechanism 26 only needs to perform core-pulling action through one oil cylinder 261, so that the whole core-pulling process is completed at one step, the production period of plastic products is shortened, and the production efficiency is improved. And simultaneously, the utility model discloses rotatory injection mold 2 of loosing core's rotatory mechanism 26 of loosing core's simple structure is compact, easy to assemble and dismantlement.

In addition, the rotary core-pulling injection mold 2 of the present invention is provided with an inside-buckling core-pulling mechanism 27 on the basis of the rotary core-pulling mechanism 26, wherein the angle post 272 of the inside-buckling core-pulling mechanism 27 is disposed obliquely with respect to the mold opening and closing direction, the second end of the angle post 272 is slidably inserted into the sliding insert 273 and can move the sliding insert 273 in the second direction, the first inside-buckling insert 274 is slidably assembled on the sliding insert 273 by being fitted with the first slide rail 2741 and the first slide groove 2732, the two second inside-buckling inserts 275 are slidably assembled on the opposite side surfaces of the first inside-buckling insert 274 by being fitted with the second slide rail 2742 and the second slide groove 2751, the mating ends of the inside-buckling cores 2752 of the two second inside-buckling inserts 275 can respectively penetrate and protrude the first core 2641 and the second core 2642, the two bolts connecting the first core 2641 and the second core 2642 penetrate the third slide groove 2731 of the sliding insert 273, the elastic member 276 forces the sliding insert 273 to move away from the rotating core member 264, and the core pulling and demolding of the inner buckle core 2752 of the two second inner buckle inserts 275 are realized by the inclined arrangement of the inclined guide post 272, the first sliding groove 2732 and the second sliding rail 2742 relative to the mold opening and closing direction, so that the production period of the mold is shortened, and the production efficiency is improved.

Above embodiment is the preferred example of the utility model, and not the restriction the utility model discloses the range of implementing, the event all according to the utility model discloses the equivalent change or the decoration that structure, characteristic and principle were done of application for patent scope all should be included in the utility model discloses the patent application scope.

Claims (10)

1. The utility model provides a rotatory injection mold of loosing core, includes the fixed die plate and the movable mould board that set gradually on the mould direction that opens and shuts, the fixed die plate is close to the terminal surface of movable mould board is provided with fixed mold core, the movable mould board is close to the terminal surface of fixed die plate is provided with movable mold core, its characterized in that:

the rotary core-pulling injection mold further comprises a rotary core-pulling mechanism, the rotary core-pulling mechanism comprises a rotary core piece, a rotating shaft, a linkage shaft, a driving rod and an oil cylinder, the rotary core piece is provided with a hook core head and a core body which are connected with each other, and the hook core head can protrude out of the movable core body;

the two ends of the rotating shaft are fixed on the movable mold core, the axial direction of the rotating shaft is perpendicular to the mold opening and closing direction, the core body is rotatably sleeved on the rotating shaft and provided with a first arc-shaped groove, the linkage shaft penetrates through the first arc-shaped groove and can slide in the first arc-shaped groove, and the axial direction of the linkage shaft is parallel to the axial direction of the rotating shaft;

the first end of the driving rod is connected with the linkage shaft, the second end of the driving rod is connected with a piston rod of the oil cylinder, the oil cylinder is installed on the outer side of the movable template and controls the driving rod to move in a first direction, and the first direction is obliquely arranged relative to the mold opening and closing direction;

and a cavity can be formed among the fixed mold core, the movable mold core and the hook core head.

2. The rotary core-pulling injection mold according to claim 1, characterized in that:

the rotary core pulling mechanism further comprises a guide rod and two support plates, the cross section of the guide rod is arranged in an arc shape, and a second arc-shaped groove is formed in the side surface of each support plate;

in the axial direction of the rotating shaft, the two support plates are respectively positioned at two sides of the rotating core member, and the two second arc-shaped grooves of the two support plates are oppositely arranged;

two ends of the guide rod respectively penetrate through the rotating core member and are respectively inserted into the two second arc-shaped grooves in a sliding mode, and the guide rod and the rotating shaft are coaxially arranged.

3. The rotary core-pulling injection mold according to claim 2, characterized in that:

the rotary core member having a first core member and a second core member, the rotary core member being formed by locking the first core member and the second core member together by a bolt;

two ends of the linkage shaft respectively penetrate through the first arc-shaped grooves of the first core piece and the second core piece, and the first end of the driving rod is located between the first core piece and the second core piece.

4. The rotary core-pulling injection mold according to claim 3, characterized in that:

the rotary core pulling mechanism further comprises a positioning shaft, the positioning shaft penetrates through the first core piece and the second core piece, and the axial direction of the positioning shaft is parallel to the axial direction of the rotating shaft;

the positioning shaft is located between the rotating shaft and the guide bar in a radial direction of the rotating shaft.

5. The rotary core-pulling injection mold according to claim 1, characterized in that:

the movable mould core is close to the terminal surface of deciding the mould core has seted up the spacing groove, the actuating lever runs through the spacing groove sets up, just the bottom surface of spacing groove is the inclined plane, the inclined plane is in extend in the first direction.

6. The rotary core-pulling injection mold according to claim 1, characterized in that:

the periphery of the second end of the driving rod is convexly provided with a stop block, and the stop block can abut against the side surface of the movable mold core.

7. The rotary core-pulling injection mold according to claim 3, characterized in that:

the rotary core-pulling injection mold further comprises a supporting plate and an inner-buckle core-pulling mechanism, the supporting plate is located on one side, away from the fixed mold plate, of the movable mold plate in the mold opening and closing direction, the inner-buckle core-pulling mechanism comprises an inclined guide pillar, a driving seat, a sliding insert, an elastic piece, a first inner-buckle insert and two second inner-buckle inserts, the first end of the driving seat is fixed on the supporting plate, and the second end of the driving seat penetrates through the movable mold core;

the inclined guide post is obliquely arranged relative to the mold opening and closing direction, a first end of the inclined guide post is arranged on the driving seat, a second end of the inclined guide post is slidably inserted into the sliding insert and can enable the sliding insert to move in a second direction, and the second direction is perpendicular to the mold opening and closing direction and the axial direction of the rotating shaft respectively;

the sliding insert is positioned between the first core piece and the second core piece, a first sliding groove which obliquely extends relative to the mold opening and closing direction is formed in the first end of the sliding insert, a first sliding rail is arranged at one end of the first inner buckling insert, and the first sliding rail is slidably matched with the first sliding groove;

two opposite side surfaces of the first inner buckling insert are respectively provided with second sliding rails which obliquely extend relative to the direction of the opening and closing mold, a first side surface of each second inner buckling insert is provided with a second sliding groove, and one second sliding groove is slidably matched with one second sliding rail;

each second inner buckling insert is provided with an inner buckling core in a protruding mode on a second side face opposite to the first side face, and the matching ends of the two inner buckling cores can penetrate through and protrude out of the first core piece and the second core piece respectively;

the sliding insert is provided with a third sliding groove, the third sliding groove extends along the second direction, two bolts connecting the first core piece and the second core piece penetrate through the third sliding groove, and the two bolts are arranged side by side in the second direction;

the elastic piece forces the sliding insert to move away from the rotating core piece, and the cavity can be formed among the fixed mold core, the movable mold core, the hook core head, the second end of the driving seat and the matching ends of the two inner buckling cores.

8. The rotary core-pulling injection mold according to claim 7, characterized in that:

the elastic part is a return spring, a first limiting hole is formed in the side face, close to the first core piece, of the sliding insert, a second limiting hole is formed in the side face, close to the sliding insert, of the first core piece, the return spring is located in the first limiting hole and the second limiting hole, and the axial directions of the first limiting hole and the second limiting hole are parallel to the second direction.

9. The rotary core-pulling injection mold according to claim 7, characterized in that:

the second end face of the driving seat is provided with an accommodating groove, the accommodating groove extends in the axial direction of the inclined guide pillar, the inclined guide pillar is located in the accommodating groove, and the second end of the sliding insert is slidably matched in the accommodating groove.

10. The rotary core-pulling injection mold according to claim 7, characterized in that:

the rotary core pulling mechanism further comprises a limiting seat, a first end of the limiting seat is fixed on the supporting plate, a second end of the limiting seat can be inserted into the movable core, a groove is formed in a second end face of the limiting seat, and the driving rod penetrates through the groove.

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