CN216860473U - Internal rotation sliding block mechanism and injection mold - Google Patents

Abstract

The utility model provides an internal rotation sliding block mechanism and an injection mold, wherein the internal rotation sliding block mechanism comprises a rotating ring, a pushing block, an internal rotation driving assembly and an internal rotation insert, the internal rotation driving assembly is arranged on the outer side of the rotating ring, two ends of the pushing block are respectively connected with the rotating ring and the internal rotation driving assembly, the extending direction of the pushing block and the driving direction of the internal rotation driving assembly intersect to form a preset included angle, the internal rotation driving assembly drives the rotating ring to rotate around the internal rotation driving assembly in the axial direction through the pushing block, the internal rotation insert is arranged on the rotating ring, one end of the internal rotation insert extends towards the center of the rotating ring, one end of the internal rotation insert is provided with a protruding part, and the protruding part extends along the rotating direction of the rotating ring. The injection mold comprises an upper mold core, a lower mold core and an internal rotation sliding block mechanism, wherein a cavity is formed between the upper mold core and the lower mold core, a rotating ring of the internal rotation sliding block mechanism is coaxially arranged on the outer side of the cavity, and a protruding part of an internal rotation insert extends into the cavity. The utility model has the advantages of simple structure, convenient operation and convenient demoulding.

Description

Internal rotation sliding block mechanism and injection mold

Technical Field

The utility model relates to the field of injection molds, in particular to an internal rotation sliding block mechanism and an injection mold.

Background

Some workpieces, as required for assembly or actual use, are formed with at least one bridge on the inside of the workpiece, such as the ring set shown in fig. 1 and 2. This annular external member includes inner ring and outer loop, connects through the go-between inner ring and the outer loop, and this convex bridge sets up on the periphery wall of inner ring and hides in the inboard of outer loop, when moulding plastics, because the structural constraint of outer loop, the difficult drawing of patterns of convex bridge department. Therefore, an injection mold is needed to be developed to facilitate the formation and demolding of the convex bridge.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an internal rotation sliding block mechanism which is simple in structure, convenient to operate and convenient to demould.

The second purpose of the utility model is to provide an injection mold comprising the internal rotation sliding block mechanism.

In order to achieve the first object, the utility model provides an internal rotation slider mechanism, which comprises a rotating ring, a pushing block, an internal rotation driving assembly and an internal rotation insert, wherein the internal rotation driving assembly is arranged on the outer side of the rotating ring, two ends of the pushing block are respectively connected with the rotating ring and the internal rotation driving assembly, the extending direction of the pushing block and the driving direction of the internal rotation driving assembly intersect to form a preset included angle, the internal rotation driving assembly drives the rotating ring to rotate around the self axial direction through the pushing block, the internal rotation insert is arranged on the rotating ring, one end of the internal rotation insert extends to the center of the rotating ring, one end of the internal rotation insert is provided with a protruding part, and the protruding part extends along the rotating direction of the rotating ring.

According to the scheme, the bulge of the internal rotation insert extends into the convex bridge used for forming the workpiece in the cavity through the arrangement of the internal rotation insert, the internal rotation insert is arranged on the rotating ring, and when the internal rotation driving assembly drives the rotating ring to rotate around the self axial rotation of the internal rotation driving assembly through the pushing block, the internal rotation insert can follow the rotating ring to synchronously rotate in the same direction, so that the bulge can be separated from the convex bridge along the circumferential direction of the workpiece, and the ejection of the follow-up whole workpiece is facilitated. The utility model has the advantages of simple structure, convenient operation and convenient demoulding.

The peripheral wall of the rotating ring is provided with a plurality of first rollers which are arranged along the circumferential direction of the rotating ring, the peripheral wall of each first roller protrudes out of the peripheral wall of the rotating ring, and the first rollers can rotate around the axial direction of the first rollers relative to the rotating ring.

The further scheme is that the internal rotation driving assembly comprises a first outer sliding block and a first outer inclined guide rod, the first outer sliding block is hinged to one end of the pushing block, the first outer inclined guide rod extends along the axial direction of the rotating ring in an inclined mode, the first outer inclined guide rod is movably connected with the first outer sliding block, and the first outer inclined guide rod can drive the first outer sliding block to move towards the direction away from the rotating ring.

In order to achieve the second object, the utility model provides an injection mold, which comprises an upper mold and a lower mold, wherein the upper mold is provided with an upper mold core, the lower mold is provided with a lower mold core, a cavity is formed between the upper mold core and the lower mold core, the injection mold further comprises the internal rotation sliding block mechanism, a rotating ring of the internal rotation sliding block mechanism is coaxially arranged at the outer side of the cavity, a protruding part of an internal rotation insert extends into the cavity, and an internal rotation driving assembly is arranged at one side of the lower mold core.

The lower die core is provided with a center mounting groove, an outer annular groove and a plurality of outer arc fixing parts, the center mounting groove and the outer annular groove are coaxially arranged, the outer arc fixing parts are positioned between the center mounting groove and the outer annular groove, an outer sliding groove is arranged between every two adjacent outer arc fixing parts, the outer sliding grooves are respectively communicated with the center mounting groove and the outer annular groove, a rotating ring is rotatably arranged in the outer annular groove, an internal rotation insert is arranged in the outer sliding groove, and the internal rotation insert can rotate around the center of the center mounting groove in the outer sliding groove;

still be provided with a plurality of outer arc sliders in the outer spout, a plurality of outer arc fixed parts and a plurality of outer arc sliders enclose the periphery wall that closes the die cavity, and outer arc slider can be along the axial displacement of central mounting groove, and outer arc slider telescopically sets up on the rotatory route of interior spiral mold insert.

According to the scheme, the outer arc-shaped sliding block capable of moving in a telescopic mode is arranged, and when the mold is closed, the outer arc-shaped sliding block extends out and is used for blocking the rotation of the internal rotation insert and the rotating ring; during the die sinking, outer arc slider withdrawal for the rotatory reservation space of interior rotatory mold insert for interior rotatory mold insert can follow rotatory predetermined angle of ring, makes the bulge can separate with the convex bridge of work piece.

The second roller is arranged along the circumferential direction of the outer ring groove, the circumferential wall of the second roller is protruded from the groove bottom of the outer ring groove and is in line contact with the surface of the rotating ring, the axial direction of the second roller is parallel to the radial direction of the outer ring groove, and the second roller can rotate around the axial direction of the second roller.

A plurality of first inner sliding blocks and a plurality of second inner sliding blocks are arranged in the center mounting groove at intervals along the circumferential direction of the center mounting groove, the plurality of first inner sliding blocks and the plurality of second inner sliding blocks enclose the inner circumferential wall of the molding cavity, an inner oblique sliding hole is formed in one side, close to the center of the center mounting groove, of each first inner sliding block, and the inner oblique sliding holes extend obliquely along the mold opening direction;

go up the middle part of mould benevolence and be provided with the annular, go up fixed part and last connecting seat, go up annular and the coaxial setting of die cavity and intercommunication, it is protruding to go up the notch direction of fixed part from the tank bottom center of last annular to make progress the annular, it links firmly the tip at last fixed part to go up the connecting seat, it is within the internal perisporium of die cavity with the equal cartridge of last connecting seat to go up the fixed part, it is provided with a plurality of first interior slide bars to go up the connecting seat, first interior slide bar is arranged along the slope of die sinking direction, first interior slide bar and first interior slider one-to-one set up, first interior slide bar activity cartridge is in the interior slide bar that corresponds, first interior slide bar can drive first interior slider and remove to central mounting groove center.

According to the scheme, the inner peripheral wall of the cavity is enclosed by the first inner sliding block and the second inner sliding block, when the mold is opened, the first inner sliding block is driven to move towards the center through the first inner oblique sliding rod, so that the first inner sliding block is conveniently separated from a workpiece, and an enough moving space is reserved for the second inner sliding block.

And a second inner oblique sliding rod is connected to one end of the second inner sliding block and extends obliquely along the die opening direction, and the second inner oblique sliding rod can drive the second inner sliding block to move towards the center of the center mounting groove.

According to the scheme, after the first inner sliding block moves towards the center, the second inner sliding block is driven to move towards the center, so that the second inner sliding block is conveniently separated from a workpiece, and the workpiece is conveniently ejected.

The further proposal is that a plurality of slide components are arranged on the lower die core and are arranged along the circumferential direction of the rotating ring;

the slide subassembly includes the outer slider of second and the outer oblique guide arm of second, and the outer slider of second corresponds with outer arc fixed part and arranges, and the one end of the outer slider of second extends through the top of the outside arc fixed part of rotatory ring, and the tip of the outer slider of second stretches into the die cavity, and the outer oblique guide arm of second extends along the slope of die sinking direction, the outer oblique guide arm of second and the outer slider swing joint of second, and the outer oblique guide arm of second can drive the outer slider of second and follow the radial slip of rotatory ring.

The further proposal is that the upper die sequentially comprises an upper fixing plate, a hot runner plate, a stripper plate and an upper die plate from top to bottom, and an upper die core is arranged on the upper die plate; the lower die comprises a lower die plate, a lower die base, an upper ejection plate, a lower ejection plate and a lower fixing plate from top to bottom in sequence, and the lower die core is arranged on the lower die plate; the lower die base and the lower die plate are opened before the upper die plate and the lower die plate are opened, and the lower die base and the lower die plate are closed after the upper die plate and the lower die plate are closed.

Drawings

FIG. 1 is a first perspective view of a workpiece injection molded in accordance with an embodiment of the present invention.

FIG. 2 is a second perspective view of a workpiece injection molded in accordance with an embodiment of the present invention.

Fig. 3 is a block diagram of an embodiment of the present invention.

Fig. 4 is a cross-sectional view of an embodiment of the present invention.

Fig. 5 is an exploded view of a core component of an embodiment of the utility model.

Fig. 6 is a cross-sectional view of a core component of an embodiment of the utility model.

Fig. 7 is an enlarged view at a in fig. 6.

FIG. 8 is an exploded view of the lower mold core and the inner rotary slide assembly according to an embodiment of the present invention.

FIG. 9 is a structural diagram of the outer arc slider limiting the rotation of the rotating ring in the embodiment of the present invention.

Fig. 10 is a structural view of the outer arc slider after moving down in the embodiment of the present invention.

FIG. 11 is a top view of the inner rotary slide assembly and the lower mold core in an embodiment of the utility model.

Fig. 12 is a sectional view at B-B in fig. 11.

Fig. 13 is an enlarged view at C in fig. 12.

Fig. 14 is a top view of an acupoint in accordance with an embodiment of the present invention.

Fig. 15 is a cross-sectional view taken at D-D in fig. 14.

FIG. 16 is an exploded view of the first inner slide and the second inner slide in an embodiment of the present invention.

Fig. 17 is a structural view of an upper core in an embodiment of the present invention.

Fig. 18 is an exploded view of the catch assembly in an embodiment of the present invention.

FIG. 19 is a schematic structural view of a slider assembly in an embodiment of the present invention.

The utility model is further explained with reference to the drawings and the embodiments.

Detailed Description

Referring to fig. 1 and 2, the workpiece 1 injection-molded by the present embodiment is an annular sleeve, which includes an inner ring 11, an outer ring 12, and a connecting ring 13, the inner ring 11 and the outer ring 12 are coaxially disposed, the connecting ring 13 is connected between the inner ring 11 and the outer ring 12, and the lower end of the inner ring 11 protrudes out of the end of the outer ring 12. Eight rectangular through holes and eight waist round holes are arranged on the inner ring 11, the eight rectangular through holes are uniformly arranged along the circumferential interval of the inner ring 11, the eight waist round holes are uniformly arranged along the circumferential interval of the inner ring 11, and the rectangular through holes and the waist round holes are arranged along the axial direction of the inner ring 11. The outer peripheral wall of the inner ring 11 is further provided with two first bridges 111 and two second bridges 112, the two first bridges 111 and the two second bridges 112 are arranged at intervals along the circumferential direction of the inner ring 11, the length of the first bridges 111 is shorter than that of the second bridges 112, and a preset distance is arranged between the first bridges 111 and the bottom wall of the connecting ring 13 and between the second bridges 112 and the bottom wall of the connecting ring 13, that is, during injection molding, it is necessary to provide inserts between the bottom wall of the connecting ring 13 and the bridges, since the first bridges 111 and the second bridges 112 are both blocked by the outer ring 12, the bridges are difficult to mold by a general insert, and even if molding is possible, smooth demolding is difficult.

The outer ring 12 is provided with two first sliding grooves 121 and two second sliding grooves 122, the two first sliding grooves 121 and the two second sliding grooves 122 are arranged at intervals along the circumferential direction of the outer ring 12, the extending directions of the two first sliding grooves 121 and the two second sliding grooves 122 are the same, the first sliding grooves 121 are located on one side of the first convex bridge 111, and the second sliding grooves 122 are located on one side of the second convex bridge 112. The groove wall of the first sliding groove 121 is provided with a hook, and the groove wall of the second sliding groove 122 is provided with a convex strip.

Referring to fig. 3 to 8, the present embodiment provides an injection mold including an upper mold and a lower mold, the upper mold sequentially includes an upper fixing plate 10, a hot runner plate 20, a stripper plate 30, and an upper mold plate 40 from top to bottom, the upper mold plate 40 is provided with four upper mold cores 2, and the four upper mold cores 2 are arranged in a "field" shape. The lower die sequentially comprises a lower die plate 50, a lower die base 60, an upper ejection plate 70, a lower ejection plate 80 and a lower fixing plate 90 from top to bottom, four lower die cores 3 are arranged on the lower die plate 50, the lower die cores 3 correspond to the upper die cores 2 one by one, and a cavity matched with the workpiece 1 is formed between the upper die cores 2 and the lower die cores 3. Two die angle plates are arranged between the lower die holder 60 and the lower fixing plate 90, and the upper ejection plate 70 and the lower ejection plate 80 are both positioned between the two die angle plates.

The embodiment has four acupuncture points, and the flow channels of the four acupuncture points are all communicated with the glue inlet of the die, namely, the embodiment can form four workpieces 1 at one time. The injection mold further comprises four internal rotation sliding block mechanisms 4, and each acupuncture point is provided with one internal rotation sliding block mechanism 4.

Referring to fig. 8 to 13 in conjunction with fig. 4, the internal rotation slider mechanism 4 includes a rotating ring 41, a pushing block 42, an internal rotation driving assembly 43, and four internal rotation inserts 44. The rotating ring 41 is arranged on the lower die core 3 and positioned outside the die cavity, and the rotating ring 41 is arranged coaxially with the die cavity. The four internal rotation inserts 44 are uniformly arranged on the rotating ring 41 at intervals, the middle part of the internal rotation insert 44 is fixedly connected with the rotating ring 41, one end of the internal rotation insert 44 extends towards the center of the rotating ring 41, one end of the internal rotation insert 44 extending towards the center of the rotating ring 41 is provided with a protruding part 441, the protruding part 441 extends along the rotating direction of the rotating ring 41, and the protruding part 441 of the internal rotation insert 44 extends into the cavity.

The internal rotation driving component 43 is arranged outside the rotating ring 41, namely, is located on one side of the lower die core 3, the first end of the pushing block 42 is hinged to the rotating ring 41 through a first rotating shaft, the second end of the pushing block 42 extends out of the lower die core 3, the pushing block 42 is hinged to the internal rotation driving component 43 through a second rotating shaft, the first rotating shaft and the second rotating shaft are both parallel to the axial direction of the rotating ring 41, and the internal rotation driving component 43 drives the rotating ring 41 to rotate around the self axial direction through the pushing block 42. Specifically, the internal rotation driving assembly 43 includes a first external slider 431 and a first external slant guide 432, the first external slider 431 is disposed on the lower mold plate 50, the first external slider 431 is hinged to one end of the pushing block 42 away from the rotating ring 41, an upper portion of the first external slant guide 432 is connected to the upper mold plate 40, and the first external slant guide 432 extends obliquely in the axial direction of the rotating ring 41, that is, the first external slant guide 432 extends obliquely in the mold opening direction. The first outer oblique guide rod 432 is movably connected with the first outer slide 431. When the mold is opened, the upper mold plate 40 drives the first outer guiding rod 432 to move along the mold opening direction, and the first outer guiding rod 432 drives the first outer sliding block 431 to move along the direction perpendicular to the mold opening direction, i.e. to slide away from the rotating ring 41, so that the pushing block 42 pulls the rotating ring 41 to rotate. The extending direction of the pushing block 42 intersects with the driving direction of the internal rotation driving assembly 43 to form a preset included angle, and the extending direction of the pushing block 42 cannot be parallel or perpendicular to the driving direction of the internal rotation driving assembly 43, and the included angle is designed to ensure that the pushing block 42 can pull the rotating ring 41 to rotate by the necessary angle and reset.

When the mold is opened, the rotating ring 41 drives the internal rotation insert 44 to rotate anticlockwise under the driving of the internal rotation driving assembly 43, so that the protruding part 441 and the convex bridge are staggered in the axial direction of the rotating ring 41, and the workpiece 1 can be conveniently ejected out in the axial direction of the rotating ring 41 subsequently; during mold closing, the internal rotation driving assembly 43 reversely drives the rotating ring 41, and simultaneously the rotating ring 41 drives the internal rotation insert 44 to rotate clockwise, so that the protruding portion 441 is reset between the bottom wall of the connecting ring 13 and the convex bridge for forming the convex bridge of the workpiece 1.

The lower core 3 is provided with a center mounting groove 31, an outer annular groove 32 and four outer arc-shaped fixing portions 33, the center mounting groove 31 is coaxially arranged with the outer annular groove 32, and the outer annular groove 32 is located outside the center mounting groove 31. The four outer arc-shaped fixing parts 33 are uniformly arranged on the circumference of the central mounting groove 31 at intervals, the outer arc-shaped fixing parts 33 are positioned between the central mounting groove 31 and the outer annular groove 32, an outer sliding groove 34 is formed between every two adjacent outer arc-shaped fixing parts 33, the outer sliding groove 34 penetrates through the lower die core 3 along the die opening direction, and the outer sliding groove 34 is respectively communicated with the central mounting groove 31 and the outer annular groove 32. A stepped groove 341 is formed at one side of the outer arc-shaped fixing portion 33 close to the outer sliding groove 34, and the stepped groove 341 is simultaneously communicated with the center mounting groove 31 and the outer sliding groove 34. The convex part 441 of the internal rotation insert 44 is matched and connected with the step groove 341, and the convex part 441 and the step groove 341 jointly form a convex bridge of the workpiece 1. The rotating ring 41 is rotatably arranged in the outer annular groove 32, the pushing block 42 is movably arranged in one of the outer sliding grooves 34, the inner rotating insert 44 is arranged in the corresponding outer sliding groove 34, and the inner rotating insert 44 can rotate around the center of the central mounting groove 31 in the outer sliding groove 34.

An outer arc-shaped sliding block 5 is arranged in each outer sliding groove 34, the outer arc-shaped sliding blocks 5 extend along the die opening direction, and the peripheral wall of the die cavity is enclosed by the four outer arc-shaped sliding blocks 5 and the four outer arc-shaped fixing parts 33. The lower part of the outer arc-shaped sliding block 5 penetrates through the lower die core 3 and the lower template 50 to be connected with a cushion plate on the lower die seat 60, and the outer arc-shaped sliding block 5 can slide along the axial direction of the central mounting groove 31, namely the outer arc-shaped sliding block 5 is arranged on the rotating path of the internal rotation insert 44 in a telescopic and movable mode. When the die is closed, the outer arc-shaped sliding block 5 and the inner rotating insert 44 are filled in the whole outer sliding groove 34, namely, the inner rotating insert 44 cannot move; when the mold is opened, the mold is opened between the lower mold base 60 and the lower mold plate 50 by a preset distance, so that the outer arc-shaped slide block 5 moves downwards along the mold opening direction and leaves the rotating path of the internal rotation insert 44, and at this time, the internal rotation driving assembly 43 can drive the rotating ring 41 to rotate; when the mold is closed, the rotating ring 41 needs to drive the inward rotating insert 44 to reset, and then the outer arc-shaped slide block 5 is driven to move upwards along the mold opening direction to reset while the lower mold base 60 and the lower mold plate 50 are closed.

In order to ensure that the lower die holder 60 and the lower die plate 50 are opened before the upper die plate 40 and the lower die plate 50 are opened during die opening, four groups of locking assemblies 8 are designed between the upper die plate 40 and the lower die plate 50, the four groups of locking assemblies 8 are arranged on two sides of the injection die, and the locking assemblies 8 are connected between the upper die plate 40 and the lower die plate 50. Specifically, as shown in fig. 18, the locking assembly 8 includes a locking seat 81 and a locking sleeve 82, the locking seat 81 is fixedly connected to the upper die plate 40, one end of the locking seat 81 is provided with a latching portion 811, and the left and right sides of the latching portion 811 are respectively provided with a clamping wheel 812. The locking sleeve 82 is fixedly connected with the lower template 50, a locking groove 821 is arranged in the middle of the locking sleeve 82, arc-shaped grooves 822 are respectively formed in the left inner side wall and the right inner side wall of the locking groove 821, the latch portion 811 is inserted into the locking groove 821, and the clamping wheel 812 is connected with the arc-shaped grooves 822 in a matched mode, so that the locking and unlocking of the locking and buckling assembly 8 can be achieved only by large force.

During die assembly, in order to ensure that the lower die holder 60 and the lower die plate 50 are later than the die assembly between the upper die plate 40 and the lower die plate 50, two sets of slider assemblies are designed on the outer sides of the upper die plate 40, the lower die plate 50 and the lower die holder 60, and the two sets of slider assemblies 9 are respectively arranged on two sides of the injection mold. The slider assembly 9 is connected between the upper die plate 40, the lower die plate 50 and the lower die holder 60.

Specifically, as shown in fig. 19, the slider assembly 9 includes a vertical slider 91, a position restricting sleeve 92, a slide holder 93, an elastic member 95, and a stopper 94. The first end of the vertical slider 91 is fixedly connected with the upper template 40, the second end of the vertical slider 91 is provided with a first inclined plane part 911 and a second inclined plane part 912, and the first inclined plane part 911 and the second inclined plane part 912 are respectively arranged at two sides of the vertical slider 91. The limiting sleeve 92 is fixedly connected to the outer side of the lower die plate 50, the sliding seat 93 is movably arranged on the lower die base 60 and is located between the lower die plate 50 and the lower die base 60, and the sliding seat 93 can move along the direction vertical to the die opening direction. The sliding seat 93 is set to be in an L shape, the sliding seat 93 comprises a vertical arm and a cross arm which are vertically arranged, the vertical arm is arranged between the lower die plate 50 and the lower die holder 60 along the die opening direction, one side, away from the cross arm, of the vertical arm is provided with an elastic piece mounting groove, an elastic piece 95 is arranged in the elastic piece mounting groove, and the elastic piece 95 applies elastic force to the sliding seat 93 to move outwards. The cross arm extends to the outer side of the mold along the direction vertical to the mold opening direction, and the cross arm partially protrudes out of the outer side wall of the mold. The end of the cross arm protruding out of the lower die base 60 is provided with a sliding groove 931, and the sliding groove 931 extends obliquely along the die opening direction. The second end of the vertical sliding block 91 passes through the limiting sleeve 92 downwards and is inserted into the sliding groove 931. The first inclined surface portion 911 and the second inclined surface portion 912 are respectively connected to two side groove walls of the sliding groove 931 in a matching manner, so as to drive the sliding seat 93 to move outwards or inwards. The stop block 94 is fixedly connected to the bottom of the lower plate 50 and located in the moving direction of the sliding seat 93, i.e. the stop block 94 is located on the outward side of the vertical arm and acts to limit the outward movement of the sliding seat 93.

Before the die assembly, the sliding seat 93 extends out of the lower die holder 60 under the action of the elastic piece 95, and at the moment, the stop block 94 is positioned above the upper end surface 932 of the sliding seat 93, so that the die assembly between the lower die holder 60 and the lower die plate 50 is prevented; at this time, the upper mold plate 40 and the lower mold plate 50 are first closed, so that the vertical sliding block 91 moves downward until the second inclined surface portion 912 of the vertical sliding block 91 forces the sliding seat 93 to move toward the center of the mold, so that the upper end surface 932 and the stop block 94 are dislocated in the closing direction, and the lower mold seat 60 and the lower mold plate 50 can be closed.

The outer peripheral wall of the rotating ring 41 is provided with four first rollers 411, the four first rollers 411 being arranged in a row along the circumferential direction of the rotating ring 41, the first rollers 411 being capable of rotating about their own axial direction with respect to the rotating ring 41, the peripheral wall portion of the first rollers 411 projecting beyond the outer peripheral wall of the rotating ring 41 for line contact with the groove wall of the outer annular groove 32. The arrangement of the first roller 411 is advantageous to reduce the friction between the rotating ring 41 and the groove wall of the outer annular groove 32, so that the rotating ring 41 can rotate smoothly, and the driving force required by the inner rotary driving assembly 43 is reduced.

The groove bottom of the outer annular groove 32 is provided with seven second rollers 321, the seven second rollers 321 are arranged in a circumferential direction of the outer annular groove 32, the axial direction of the second rollers 321 is parallel to the radial direction of the outer annular groove 32, and the second rollers 321 can rotate around the axial direction thereof relative to the outer annular groove 32. The peripheral wall portion of the second roller 321 protrudes from the groove bottom of the outer annular groove 32 for line contact with the surface of the rotating ring 41. The provision of the second roller 321 can reduce the frictional force between the rotating ring 41 and the groove bottom of the outer annular groove 32, thereby further improving the smoothness of the rotating ring 41.

With reference to fig. 14 to 17 and fig. 4 and 8, four first inner sliders 6 and four second inner sliders 7 are disposed in the central mounting groove 31, the first inner sliders 6 and the second inner sliders 7 are arranged at intervals along the circumferential direction of the central mounting groove 31, the first inner sliders 6 are configured to be of an approximately trapezoidal structure with a narrow top and a wide bottom, and the second inner sliders 7 are configured to be of an approximately trapezoidal structure with a wide top and a narrow bottom. During die assembly, the outer wall of the first inner slide block 6 and the outer wall of the second inner slide block 7 are positioned on the same circle, and the outer walls of the four first inner slide blocks 6 and the outer walls of the four second inner slide blocks 7 enclose the inner peripheral wall of the die cavity. The lower part of the first inner slide 6 is provided with a sliding part 61, the sliding part 61 is provided with an inner inclined sliding hole 611 and two guiding parts 612, the inner inclined sliding hole 611 is positioned at one side close to the center of the central mounting groove 31, and the inner inclined sliding hole 611 extends obliquely along the mold opening direction. The two guide portions 612 are respectively arranged at two sides of the sliding portion 61, the supporting portion 311 is arranged at the bottom of the central mounting groove 31, the supporting portion 311 is provided with a cross-shaped guide sliding groove 312, the four sliding portions 61 are respectively arranged in four end portions of the guide sliding groove 312, and the guide portions 612 are slidably connected with the guide sliding groove 312.

Go up 2 of mould benevolence towards one side middle parts of lower mould benevolence 3 and be provided with annular 21, go up fixed part 22 and last connecting seat 23, go up annular 21 and the coaxial setting of die cavity and intercommunication, it is protruding to go up the notch direction of fixed part 22 from the tank bottom center of last annular 21 to the annular 21 of going up, it establishes to be narrow frustum about big up to go up fixed part 22, it links firmly at the tip of last fixed part 22 to go up connecting seat 23, go up fixed part 22 and go up the equal cartridge of connecting seat 23 and within the internal perisporium of die cavity, be located within first interior slider 6 and second interior slider 7 promptly. The upper connecting seat 23 is provided with four first inner oblique sliding rods 24, the first inner oblique sliding rods 24 are obliquely arranged along the die sinking direction, the first inner oblique sliding rods 24 and the first inner sliding blocks 6 are arranged in a one-to-one correspondence manner, and the first inner oblique sliding rods 24 are movably inserted into the inner oblique sliding holes 611. When the mold is opened, the upper mold core 2 drives the fixing portion 22 and the upper connecting seat 23 to move upwards, and at the moment, the first inner oblique sliding rod 24 can drive the first inner sliding block 6 to move towards the center of the central mounting groove 31, so that the first inner sliding block 6 is firstly separated from the inner side wall of the inner ring 11 of the workpiece 1, and the inverted part of the workpiece 1 on the first inner sliding block 6 can be demoulded.

The lower part of the second inner slide block 7 is connected with a second inner oblique slide bar 71, the second inner oblique slide bar 71 extends obliquely along the mold opening direction, the lower part of the second inner oblique slide bar 71 penetrates through the lower mold core 3, the lower mold plate 50 and the lower mold base 60 to extend upwards to the ejector plate 70, an oblique slide bar base 801 extending along the mold opening direction is arranged on the lower ejector plate 80, and the oblique slide bar base 801 upwards penetrates through the upper ejector plate 70 to be connected with an inverted T-shaped chute of the second inner oblique slide bar 71. When the injection molding machine performs ejection, the ejector rod column 802 drives the lower ejection plate 80, the upper ejection plate 70 and the oblique slide rod base 801 to move upwards, and the second inner oblique slide rod 71 drives the second inner slide block 7 to move towards the center of the center mounting groove 31, so that the second inner slide block 7 is separated from the inner side wall of the inner ring 11 of the workpiece 1.

With reference to fig. 5, 6, 8 and 9, four slide assemblies 35 are further disposed on the lower core 3, and the four slide assemblies 35 are arranged in a circumferential direction of the rotating ring 41. The slide assembly 35 comprises a second outer slide block 351 and a second outer inclined guide rod 352, the second outer slide block 351 is arranged corresponding to the outer arc-shaped fixing portion 33, the second outer slide block 351 is arranged above the rotating ring 41, one end of the second outer slide block 351 extends above the outer arc-shaped fixing portion 33 through the rotating ring 41, and the end of the second outer slide block 351 extends into the cavity. The second outward inclined guide rod 352 extends obliquely along the mold opening direction, a first end of the second outward inclined guide rod 352 is fixedly connected with the upper mold core 2, and a second end of the second outward inclined guide rod 352 is movably connected with the second outer slide block 351. When the mold is opened, the upper mold core 2 drives the second outer guiding bevel rod 352 to move upwards, and the second outer guiding bevel rod 352 can drive the second outer slider 351 to move outwards along the radial direction of the rotating ring 41, so that the second outer guiding bevel rod 352 is separated from the outer ring 12 of the workpiece 1. Two of the second outer sliders 351 are used for forming the first chute 121 of the workpiece 1, and the other two second outer sliders 351 are used for forming the second chute 122 of the workpiece 1.

The glue inlet of the embodiment is arranged on the upper die in a mode of changing a hot runner into a thin water port, and the glue inlet runner 100 passes through the upper die plate 40 and the upper die core 2 to be communicated with the die cavity.

In conclusion, the inward rotating insert is arranged, the bulge of the inward rotating insert extends into the cavity to form the convex bridge of the workpiece, and the inward rotating insert is arranged on the rotating ring, so that when the inward rotating driving assembly is driven to rotate around the inward rotating driving assembly in the axial direction through the pushing block, the inward rotating insert can synchronously rotate in the same direction along with the rotating ring, the bulge can be separated from the convex bridge along the circumferential direction of the workpiece, and the subsequent whole workpiece can be conveniently ejected. The utility model has the advantages of simple structure, convenient operation and convenient demoulding.

Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, not limitations, and various changes and modifications may be made by those skilled in the art, without departing from the spirit and scope of the utility model, and any changes, equivalents, improvements, etc. made within the spirit and scope of the present invention are intended to be embraced therein.

Claims (10)

1. The internal rotation sliding block mechanism is characterized by comprising a rotating ring, a pushing block, an internal rotation driving assembly and an internal rotation insert, wherein the internal rotation driving assembly is arranged on the outer side of the rotating ring, two ends of the pushing block are respectively connected with the rotating ring and the internal rotation driving assembly, the extending direction of the pushing block and the driving direction of the internal rotation driving assembly are intersected to form a preset included angle, the internal rotation driving assembly drives the rotating ring to rotate around the self axial direction through the pushing block, the internal rotation insert is arranged on the rotating ring, one end of the internal rotation insert extends to the center of the rotating ring, a protruding portion is arranged at one end of the internal rotation insert, and the protruding portion extends along the rotating direction of the rotating ring.

2. The internal rotation slider mechanism of claim 1, wherein:

the peripheral wall of the rotating ring is provided with a plurality of first rollers which are arranged along the circumferential direction of the rotating ring, the peripheral wall of each first roller protrudes out of the peripheral wall of the rotating ring, and the first rollers can rotate around the axial direction of the first rollers relative to the rotating ring.

3. The internal rotation slider mechanism of claim 1, wherein:

the internal rotation driving assembly comprises a first outer sliding block and a first outer inclined guide rod, the first outer sliding block is hinged to one end of the pushing block, the first outer inclined guide rod extends obliquely along the axial direction of the rotating ring, the first outer inclined guide rod is movably connected with the first outer sliding block, and the first outer inclined guide rod can drive the first outer sliding block to move towards the direction far away from the rotating ring.

4. Injection mold, including last mould and lower mould, it is provided with mould benevolence to go up the mould, the lower mould is provided with lower mould benevolence, go up the mould benevolence with be formed with die cavity, its characterized in that between the lower mould benevolence: the injection mold further comprises the internal rotation slide mechanism as claimed in any one of claims 1 to 3, wherein a rotating ring of the internal rotation slide mechanism is coaxially arranged at the outer side of the cavity, a protrusion of the internal rotation insert extends into the cavity, and the internal rotation driving assembly is arranged at one side of the lower mold core.

5. An injection mold according to claim 4, wherein:

the lower die core is provided with a center mounting groove, an outer annular groove and a plurality of outer arc-shaped fixing parts, the center mounting groove and the outer annular groove are coaxially arranged, the outer arc-shaped fixing parts are positioned between the center mounting groove and the outer annular groove, an outer sliding groove is arranged between every two adjacent outer arc-shaped fixing parts, the outer sliding groove is respectively communicated with the center mounting groove and the outer annular groove, the rotating ring is rotatably arranged in the outer annular groove, the inner rotating insert is arranged in the outer sliding groove, and the inner rotating insert can rotate around the center of the center mounting groove in the outer sliding groove;

the outer sliding groove is internally provided with a plurality of outer arc-shaped sliding blocks, the outer arc-shaped fixing portions and the outer arc-shaped sliding blocks are arranged to surround the outer peripheral wall of the cavity, the outer arc-shaped sliding blocks can move along the axial direction of the central mounting groove, and the outer arc-shaped sliding blocks are telescopically arranged on a rotating path of the internal rotation insert.

6. An injection mold according to claim 5, wherein:

the groove bottom of the outer annular groove is provided with a plurality of second rollers which are arranged along the circumferential direction of the outer annular groove, the circumferential wall of each second roller protrudes out of the groove bottom of the outer annular groove and is in line contact with the surface of the rotating ring, the axial direction of each second roller is parallel to the radial direction of the outer annular groove, and the second rollers can rotate around the axial direction of the second rollers.

7. An injection mold according to claim 5, wherein:

a plurality of first inner sliding blocks and a plurality of second inner sliding blocks are arranged in the center mounting groove at intervals along the circumferential direction of the center mounting groove, the plurality of first inner sliding blocks and the plurality of second inner sliding blocks surround the inner circumferential wall of the cavity, one side, close to the center of the center mounting groove, of each first inner sliding block is provided with an inner oblique sliding hole, and the inner oblique sliding holes extend obliquely along the die opening direction;

go up the middle part of mould benevolence and be provided with annular, go up fixed part and last connecting seat, go up the annular with the coaxial setting of die cavity and intercommunication, it follows to go up the fixed part the tank bottom center of annular to go up the notch direction arch of annular, it links firmly to go up the connecting seat the tip of last fixed part, go up the fixed part with go up the equal cartridge of connecting seat and be in within the internal perisporium of die cavity, it is provided with a plurality of first interior oblique slide bars to go up the connecting seat, first interior oblique slide bar is arranged along the die sinking direction slope, first interior oblique slide bar with first interior slider one-to-one sets up, first interior oblique slide bar activity cartridge is corresponding in the interior oblique slide bar, first interior oblique slide bar can drive first interior slider to central mounting groove center removes.

8. An injection mold according to claim 7, wherein:

one end of the second inner sliding block is connected with a second inner oblique sliding rod, the second inner oblique sliding rod extends obliquely along the die sinking direction, and the second inner oblique sliding rod can drive the second inner sliding block to move towards the center of the center mounting groove.

9. An injection mold according to claim 5, wherein:

the lower die core is also provided with a plurality of slide assemblies which are arranged along the circumferential direction of the rotating ring;

the slide assembly comprises a second outer sliding block and a second outer inclined guide rod, the second outer sliding block and the outer arc-shaped fixing portion are arranged correspondingly, one end of the second outer sliding block extends to the upper portion of the outer arc-shaped fixing portion through the rotating ring, the end portion of the second outer sliding block extends into the cavity, the second outer inclined guide rod extends obliquely along the die opening direction, the second outer inclined guide rod is movably connected with the second outer sliding block, and the second outer inclined guide rod can drive the second outer sliding block to slide along the radial direction of the rotating ring.

10. An injection mold according to claim 5, wherein:

the upper die sequentially comprises an upper fixing plate, a hot runner plate, a stripper plate and an upper die plate from top to bottom, and the upper die core is arranged on the upper die plate;

the lower die comprises a lower die plate, a lower die base, an upper ejector plate, a lower ejector plate and a lower fixing plate from top to bottom in sequence, and the lower die core is arranged on the lower die plate;

the lower die base and the lower die plate are opened before the upper die plate and the lower die plate are closed, and the lower die base and the lower die plate are closed after the upper die plate and the lower die plate are closed.

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