CN203622841U - Slant core-pulling mechanism of injection mould spring sliding block - Google Patents

Abstract

The utility model discloses a slant core-pulling mechanism of an injection mould spring sliding block. The slant core-pulling mechanism comprises upper and lower compound plates, wherein the upper compound plate is internally provided with a positioning ring and a sprue lining; the upper compound plate is provided with a cavity, a punch hole is formed in the lower compound plate, and a limiting pin and mould feet are arranged on the lower compound plate; the mould feet are provided with upper and lower thimble plates, an ejection rod of an injection molding machine penetrates through the punch hole to contact with the lower thimble plate, and a thimble is arranged between the upper and lower thimble plates; the mould feet are arranged on a supporting plate and are provided with a core, and a plastic part is arranged between the core and the cavity and is provided with an inclined hole. The slant core-pulling mechanism is characterized in that the core is provided with a slant core-pulling groove and a spring groove, wherein a slant core-pulling is arranged in the slant core-pulling groove, one end of the slant core-pulling is provided with a link stopper, the outer wall of the slant core-pulling is provided with a slant core-pulling spring, one end of the slant core-pulling spring is in contact with the bottom of the slant core-pulling groove, and the other end of the slant core-pulling spring is in contact with the link stopper; the supporting plate is internally provided with a wedge, the top of the wedge is in contact with the link stopper, the spring groove is internally provided with a fixed distance spring and a fixed distance pulling rivet, a rivet cap on is manufactured on one end of the fixed distance pulling rivet and is in contact with the core, and the other end of the fixed distance pulling rivet penetrates through the core to be fixed with the supporting plate.

Description

Injection mold spring sliding block inclined is to core-pulling mechanism

Technical field

The utility model relates to injection mold, particularly relates to injection mold spring sliding block inclined to core-pulling mechanism.

Background technology

Injection mold to working of plastics injection mo(u)lding after, if have inclined hole on working of plastics, prior art is to adopt push rod directly working of plastics to be ejected straight up, forced stripper mechanism, owing to being inclined hole, if the direction that working of plastics is deviate from is not consistent with the direction that inclined hole tilts, working of plastics is easily out of shape, draws white, damaged in strong de-process, even causes product rejection.Also having one is that oil cylinder is installed in core, after die sinking, oil cylinder first drives tiltedly to loose core and slides and loose core to the inside, then by push rod, working of plastics is ejected, the shortcoming that this structure exists is: oil cylinder volume is large, is arranged on core inside, and whole injection mold volume is increased, improve the manufacturing cost of whole injection mold, and oil cylinder is arranged on core inside, cause the cooling water channel of core inside that trouble is set, increase the manufacture difficulty of whole injection mold.

Summary of the invention

The purpose of this utility model is the shortcoming existing in order to overcome prior art, and a kind of working of plastics yield rate that improves is provided, and can guarantee the formed precision of inclined hole, and the injection mold spring sliding block inclined that assurance working of plastics can be deviate from is smoothly to core-pulling mechanism.

The utility model injection mold spring sliding block inclined to the technical scheme of core-pulling mechanism is: comprise upper compound plate and lower compound plate, centring ring and gate bush are installed in upper compound plate, upper compound plate has die cavity, in lower compound plate, have perforation, on lower compound plate, be equipped with spacer pin and mould pin, spacer pin between mould pin is provided with ejector retainner plate and lower ejector retainner plate, injector push rod contacts with below lower ejector retainner plate through perforation, on, between lower ejector retainner plate, thimble is installed, on mould pin, be provided with gripper shoe, gripper shoe is provided with core, between core and die cavity, there is the working of plastics of injection mo(u)lding, on working of plastics, have inclined hole, it is characterized in that: in described core, have tiltedly loose core groove and spring groove, in the groove of tiltedly loosing core, be provided with tiltedly and loose core, tiltedly loose core one and have block, be provided with at the outer wall of tiltedly loosing core the spring of tiltedly loosing core, the spring one end of tiltedly loosing core contacts with the trench bottom of tiltedly loosing core, the other end contacts with block, wedge is installed in gripper shoe, above wedge, contact with block, in spring groove, be provided with spacing spring and spacing blind rivet, one of spacing blind rivet is shaped with the head of a nail, the head of a nail with above core, contact, other end fixes through core and gripper shoe.

The utility model discloses a kind of injection mold spring sliding block inclined to core-pulling mechanism, when after working of plastics injection mo(u)lding, the oil cylinder that drives lower compound plate to open mould assembling action unclamps, spacing spring promotes gripper shoe and moves backward under the effect of restoring force, mould is first opened from core and gripper shoe, in opening between core and gripper shoe, gripper shoe drives wedge to move backward, the spring of tiltedly loosing core of tiltedly loosing core in groove promotes block and moves backward along the groove of tiltedly loosing core under the effect of restoring force, block drives tiltedly looses core and moves backward, the direction of tiltedly loosing core along working of plastics inclined hole is loosed core, when driving the head of a nail on spacing blind rivet, gripper shoe moves to backward when contacting above core, gripper shoe stops moving backward, this at present compound plate band dynamic model pin move backward, mould tape is moved gripper shoe, on, lower ejector retainner plate, core and working of plastics move simultaneously backward, mould is opened from core and die cavity, in the time moving to backward the position of injector push rod, injector push rod withstands lower ejector retainner plate through perforation and stops mobile, lower ejector retainner plate withstands ejector retainner plate and thimble stops mobile, thimble is by working of plastics ejection device.This programme injection mold spring sliding block inclined is to core-pulling mechanism, adopt in the time of mould die sinking and first open from core and gripper shoe, wedge is exited backward a bit of, driven tiltedly to loose core first to loose core by the spring of tiltedly loosing core and exit the inclined hole of working of plastics, then mould die sinking ejects working of plastics, the direction of loosing core of tiltedly loosing core is consistent with inclined hole incline direction, simple in structure, reliable in action, the formed precision of assurance inclined hole, improve working of plastics yield rate, assurance working of plastics can be deviate from smoothly.

The utility model injection mold spring sliding block inclined, to core-pulling mechanism, is shaped with cambered surface projection under described block, cambered surface projection with above wedge, contact.There is cambered surface projection to contact with wedge, reduced frictional contact surface, reduced wearing and tearing, improved service life.In described die cavity, have pilot hole, be provided with guide pin bushing in pilot hole, be provided with guide pillar in gripper shoe, guide pillar matches with guide pin bushing.Guide pillar coordinates with pilot hole, and guiding accurately, has had guide pin bushing to improve service life.

Accompanying drawing explanation

Fig. 1 is that injection mold spring sliding block inclined is to core-pulling mechanism matched moulds status architecture schematic diagram;

Fig. 2 is that injection mold spring sliding block inclined is to core-pulling mechanism from core with gripper shoe open mode structural representation;

Fig. 3 is that injection mold spring sliding block inclined is to core-pulling mechanism die opening state structural representation.

The specific embodiment

The utility model relates to a kind of injection mold spring sliding block inclined to core-pulling mechanism, as shown in Fig. 1-Fig. 3, comprise compound plate 1 and lower compound plate 2, centring ring 3 and gate bush 4 are installed in upper compound plate, upper compound plate has die cavity 5, in lower compound plate 2, have perforation 6, on lower compound plate, be equipped with spacer pin 7 and mould pin 8, spacer pin between mould pin is provided with ejector retainner plate 9 and lower ejector retainner plate 10, injector push rod 11 contacts with lower ejector retainner plate 10 below through perforation 6, on, between lower ejector retainner plate, thimble 12 is installed, on mould pin, be provided with gripper shoe 13, gripper shoe is provided with core 14, between core and die cavity 5, there is the working of plastics 15 of injection mo(u)lding, on working of plastics, have inclined hole 16, it is characterized in that: in described core 14, have tiltedly loose core groove 17 and spring groove 18, in the groove of tiltedly loosing core, be provided with and tiltedly loose core 19, tiltedly loose core one and have block 20, be provided with at the outer wall of tiltedly loosing core the spring 21 of tiltedly loosing core, touch with groove 17 bottom connections of tiltedly loosing core the spring one end of tiltedly loosing core, the other end contacts with block 20, wedge 22 is installed in gripper shoe 13, above wedge, contact with block 20, in spring groove 18, be provided with spacing spring 23 and spacing blind rivet 24, one of spacing blind rivet is shaped with the head of a nail 25, the head of a nail with above core, contact, other end fixes through core and gripper shoe 13.When after working of plastics 15 injection mo(u)ldings, the oil cylinder that drives lower compound plate 2 to open mould assembling action unclamps, spacing spring 23 promotes gripper shoe 13 and moves backward under the effect of restoring force, mould is first opened from core 14 and gripper shoe 13, in opening between core and gripper shoe, gripper shoe drives wedge 22 to move backward, the spring 21 of tiltedly loosing core of tiltedly loosing core in groove 17 promotes block 20 and moves backward along the groove of tiltedly loosing core under the effect of restoring force, block drives tiltedly to loose core and 19 moves backward, the direction of tiltedly loosing core along working of plastics 15 inclined holes 16 is loosed core, when driving the head of a nail 25 on spacing blind rivet 24, gripper shoe 13 moves to backward when contacting above core 14, gripper shoe 13 stops moving backward, this at present compound plate 2 be with dynamic model pin 8 to move backward, mould tape is moved gripper shoe, on, lower ejector retainner plate, core 14 and working of plastics 15 move simultaneously backward, mould is opened from core and die cavity 5, in the time moving to backward the position of injector push rod 11, injector push rod withstands lower ejector retainner plate 10 through perforation 6 and stops mobile, lower ejector retainner plate withstands ejector retainner plate 9 and thimble 12 stops mobile, thimble is by working of plastics 15 ejection devices.This programme injection mold spring sliding block inclined is to core-pulling mechanism, adopt in the time of mould die sinking and first open from core 14 and gripper shoe 13, wedge 22 is exited backward a bit of, driven tiltedly to loose core by the spring 21 of tiltedly loosing core and 19 first loose core and exit the inclined hole 16 of working of plastics, then mould die sinking ejects working of plastics 15,19 the direction of loosing core of tiltedly loosing core is consistent with inclined hole incline direction, simple in structure, reliable in action, the formed precision of assurance inclined hole 16, improve working of plastics yield rate, assurance working of plastics can be deviate from smoothly.Described block is shaped with cambered surface projection 26 20 times, and cambered surface projection contacts above with wedge 22.There is cambered surface projection 26 to contact with wedge 22, reduced frictional contact surface, reduced wearing and tearing, improved service life.In described die cavity 5, have pilot hole 27, be provided with guide pin bushing 28 in pilot hole, be provided with guide pillar 29 in gripper shoe 13, guide pillar matches with guide pin bushing.Guide pillar 29 coordinates with pilot hole 27, and guiding accurately, has had guide pin bushing 28 to improve service life.

Claims (3)

1. injection mold spring sliding block inclined is to core-pulling mechanism, comprise compound plate (1) and lower compound plate (2), centring ring (3) and gate bush (4) are installed in upper compound plate, upper compound plate has die cavity (5), in lower compound plate (2), have perforation (6), on lower compound plate, be equipped with spacer pin (7) and mould pin (8), spacer pin between mould pin is provided with ejector retainner plate (9) and lower ejector retainner plate (10), injector push rod (11) contacts with lower ejector retainner plate (10) below through perforation (6), on, thimble (12) is installed between lower ejector retainner plate, on mould pin, be provided with gripper shoe (13), gripper shoe is provided with core (14), between core and die cavity (5), there is the working of plastics (15) of injection mo(u)lding, on working of plastics, have inclined hole (16), it is characterized in that: in described core (14), have the groove of tiltedly loosing core (17) and spring groove (18), in the groove of tiltedly loosing core, be provided with tiltedly loose core (19), tiltedly loose core one and have block (20), be provided with the spring of tiltedly loosing core (21) at the outer wall of tiltedly loosing core, touch with groove (17) bottom connection of tiltedly loosing core the spring one end of tiltedly loosing core, the other end contacts with block (20), wedge (22) is installed in gripper shoe (13), above wedge, contact with block (20), in spring groove (18), be provided with spacing spring (23) and spacing blind rivet (24), one of spacing blind rivet is shaped with the head of a nail (25), the head of a nail with above core, contact, other end fixes through core and gripper shoe (13).

2. injection mold spring sliding block inclined as claimed in claim 1, to core-pulling mechanism, is characterized in that: under described block (20), be shaped with cambered surface projection (26), cambered surface projection (26) contacts above with wedge (22).

3. injection mold spring sliding block inclined as claimed in claim 1 is to core-pulling mechanism, it is characterized in that: in described die cavity (5), have pilot hole (27), in pilot hole, be provided with guide pin bushing (28), be provided with guide pillar (29) in gripper shoe (13), guide pillar matches with guide pin bushing.

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