CN214448131U - Injection mold of locking dish - Google Patents

Abstract

The application relates to the technical field of injection molds, in particular to an injection mold of a locking disc, which comprises a movable mold structure and a fixed mold structure, wherein the fixed mold structure comprises a fixed mold core, the movable mold structure comprises a movable mold core, a left slide block and a right slide block, a left forming insert is fixed on the left slide block, a right forming insert is fixed on the right slide block, and a forming cavity of the locking disc is formed among the fixed mold core, the movable mold core, the left forming insert and the right forming insert; the movable mold structure comprises a molding rod which extends into the molding cavity from the bottom of the movable mold core and penetrates through the end parts of the left molding insert and the right molding insert, the molding rod corresponds to the first center hole and the second center hole in the locking disc, and the movable mold structure further comprises an inclined guide block mechanism which drives the molding rod to withdraw from the molding cavity before the movable mold core and the fixed mold core are opened. The coaxiality of the two center holes is guaranteed, and the yield of the produced product is high.

Description

Injection mold of locking dish

Technical Field

The application relates to the field of injection molds, in particular to an injection mold of a locking disc.

Background

The mold for plastic injection molding is called an injection mold, and the injection mold can mold plastic products with complex shapes, high dimensional accuracy or inserts in one step.

In the related art, referring to a plastic locking plate shown in fig. 1, which is a product often used in automobile parts, the locking plate 1 includes a disc main body 101 and a chassis 102, the disc main body 101 is shaped like a disc, a plurality of convex rings 103 are convexly formed on the surface of the disc main body 101, inner diameters of the convex rings 103 are different, a central axis of each convex ring 103 coincides with a central axis of the disc main body 101, the chassis 102 is integrally formed on the bottom surface of the disc main body 101, and a cross section of the chassis 102 is shaped like a U. The surface of the disc main body 101 is provided with a first center hole 104 at the center position, the surface of the base frame 102 facing the bottom of the disc main body 101 is provided with a second center hole 105, and the first center hole 104 and the second center hole 105 are technically required to be coaxial.

However, when the locking plate 1 is injection molded by using the existing injection mold, the first central hole 104 and the second central hole 105 are formed by injection molding through different mold inserts, and different inserts cannot have precise coaxiality, so that the coaxiality of the first central hole 104 and the second central hole 105 of the molded product is difficult to guarantee, and the reject ratio of the product is high.

SUMMERY OF THE UTILITY MODEL

In order to guarantee that first centre bore and the coaxial axle center of second centre bore on the locking dish that produces, this application provides an injection mold of locking dish.

The application provides a locking dish's injection mold adopts following technical scheme:

an injection mold of a locking disc comprises a movable mold structure and a fixed mold structure, wherein the fixed mold structure comprises a fixed mold core, the movable mold structure comprises a movable mold core, a left slide block and a right slide block, a left forming insert is fixed on the left slide block, a right forming insert is fixed on the right slide block, and a forming cavity of the locking disc is formed among the fixed mold core, the movable mold core, the left forming insert and the right forming insert; the movable mold structure comprises a molding rod which extends into the molding cavity from the bottom of the movable mold core and penetrates through the end parts of the left molding insert and the right molding insert, the molding rod corresponds to the first center hole and the second center hole in the locking disc, and the movable mold structure further comprises an inclined guide block mechanism which drives the molding rod to withdraw from the molding cavity before the movable mold core and the fixed mold core are opened.

Through adopting above-mentioned technical scheme, the shaping pole shaping goes out first centre bore and second centre bore on the locking dish, and two centre bores that come out through a member shaping can keep an axle center, and after the shaping was accomplished, will become the shaping pole and withdraw from the shaping intracavity to accomplish the normal injection moulding of product, design like this can ensure the axiality of two centre bores, the product yields that produces is high.

Preferably, the movable mould structure comprises a supporting plate, a movable mould plate and a time-delay limiting assembly, the movable mould core is fixedly installed on the movable mould plate, the inclined guide block mechanism is fixedly installed on the supporting plate, the forming rod is in telescopic fit with the movable mould core and the movable mould plate, and when the mould is opened, the supporting plate moves back to one end of the movable mould plate for a distance, and the time-delay limiting assembly drives the movable mould plate to move together in the direction of being away from the fixed mould mechanism.

By adopting the technical scheme, the time delay linkage between the support plate and the movable template is realized by the time delay limiting assembly, after the support plate moves for a certain distance, the forming rod on the support plate can be driven to withdraw from the forming cavity, and the synchronous movement of the support plate and the movable template is completed by the time delay limiting assembly.

Preferably, the time delay limiting component comprises a fixing block and a limiting rod, the fixing block is fixedly installed on the outer side surface of the supporting plate, the limiting rod is fixedly installed on the outer side surface of the movable template, the fixing block penetrates through a limiting hole in the height direction of the mold, the limiting hole is penetrated by one end of the limiting rod, a triggering lug is formed in the protruding portion of the side wall of one end of the limiting hole, the supporting plate moves back to the movable template for one end distance, and the triggering lug is inconsistent with one side of the fixing block so as to drive the movable template to move.

Through adopting above-mentioned technical scheme, trigger the lug and contradict with the fixed block to trigger the synchronous linkage of movable mould board and backup pad, realize the time delay linkage between the two.

Preferably, the inclined guide block mechanism comprises a guide block fixed on the support plate, a guide groove inclined linearly is formed in the guide block, one end of the guide groove is higher than the other end of the guide groove, and one end of the forming rod is embedded in the guide groove and is in sliding fit with the guide groove.

By adopting the technical scheme, under the guidance of the guide groove, the telescopic motion of the forming rod is more accurate and stable, and the telescopic motion of the forming rod in the movable mould structure can be realized along the guide groove.

Preferably, the outer fixed cover of shaping pole is equipped with the sliding sleeve, the one end integrated into one piece of sliding sleeve has the slip lug, the slip lug inlays and locates in the guide way, and with guide way sliding fit.

Through adopting above-mentioned technical scheme, the sliding sleeve increases the area of contact between shaping pole and the guide way, plays the effect of protection to the shaping pole to make the shaping pole slide more stable.

Preferably, a positioning bulge is formed at one end of the left forming insert in a protruding manner, and a positioning groove matched with the positioning bulge in a concave manner is formed at one end of the right forming insert in a recessed manner.

Through adopting above-mentioned technical scheme, left side forming insert and right forming insert adopt location arch and positioning groove to realize location fit, make the more accurate cooperation of left forming insert and right forming insert after the compound die.

Preferably, one end of the forming rod sequentially penetrates through the positioning groove and the positioning bulge and protrudes out of the surface of the positioning bulge.

Preferably, the fixed die structure comprises a fixed die plate and two inclined guide pillars, the two inclined guide pillars are obliquely and fixedly mounted on the fixed die plate, the left slider and the right slider are respectively provided with a left guide hole and a right guide hole which are in sliding fit with the inclined guide pillars, and the inclined guide pillars are arranged at one end of the fixed die plate and gradually incline from the center close to the die to the center far away from the die towards the other end.

Through adopting above-mentioned technical scheme, flexible cooperation between oblique guide pillar and left guiding hole, the right guiding hole realizes the guide effect, and left slider and right slider can be close to each other or keep away from each other under the direction of oblique guide pillar, realize accurate, the stability of sliding motion.

In summary, the present application includes at least one of the following beneficial technical effects:

the coaxiality of the two central holes is guaranteed, and the yield of the produced product is high;

under the direction of the guide groove, the telescopic motion of the forming rod is more accurate and stable, and the telescopic motion of the forming rod in the movable mould structure can be realized along the guide groove.

Drawings

Fig. 1 is a schematic view of a plastic locking disk.

Fig. 2 is an exploded view illustrating a first injection mold for a locking plate according to an embodiment of the present disclosure.

Fig. 3 is a schematic cross-sectional view of an injection mold for a locking plate according to an embodiment of the present disclosure.

Fig. 4 is an exploded schematic view of an injection mold of a locking plate according to an embodiment of the present application.

Fig. 5 is an enlarged schematic view of a portion a in fig. 2, showing the shape and structure of the left slide, the right slide, the left insert, and the right insert.

Fig. 6 is an enlarged schematic view of a part B in fig. 4, and is used for embodying the shape configuration of the positioning protrusion and the positioning groove.

Fig. 7 is a schematic structural diagram of a sliding sleeve, a forming rod and a guide block in an injection mold of a locking disc according to an embodiment of the present application.

FIG. 8 is a schematic structural diagram of an injection mold for a locking plate according to an embodiment of the present application.

Fig. 9 is an enlarged schematic view of the part C in fig. 8, and is used for embodying the structure of the delay limiting component.

Description of reference numerals: 1. a locking plate; 101. a disc main body; 102. a chassis; 103. a convex ring; 104. a first central aperture; 105. a second central aperture; 2. a movable mould structure; 201. a movable mold base; 202. square iron; 203. a support plate; 204. moving the template; 205. a movable mould core; 206. a guide post; 207. a through hole; 3. a fixed die structure; 301. a fixed die base; 302. fixing a template; 303. a hot runner plate; 304. fixing a mold core; 305. pouring a nozzle; 306. an inclined guide post; 401. a left slider; 402. a right slider; 403. a left forming insert; 404. forming the insert on the right side; 405. a positioning groove; 406. positioning the projection; 5. a chute; 601. a left guide hole; 602. a right guide hole; 7. a guide block; 701. a guide groove; 8. forming a rod; 9. a sliding sleeve; 901. a sliding projection; 10. a molding cavity; 11. a delay limiting component; 1101. a limiting rod; 1102. a fixed block; 1103. a limiting hole; 1104. the bump is triggered.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

The embodiment of the application discloses injection mold of locking dish.

Referring to fig. 2 and 3, the injection mold for the locking disc comprises a movable mold structure 2 and a fixed mold structure 3, and a molding cavity 10 formed by injection molding of the locking disc 1 is formed between the movable mold structure 2 and the fixed mold structure 3.

The fixed die structure 3 comprises a fixed die base 301, a fixed die plate 302, a hot runner plate 303 and a fixed die core 304 which are sequentially arranged from high to low, the fixed die base 301 and the fixed die plate 302 are fixed together through bolts, the hot runner plate 303 and the fixed die core 304 are fixedly embedded at the bottom of the fixed die plate 302, and the setting height of the hot runner plate 303 is higher than that of the fixed die core 304.

The molding cavity 10 for product molding is formed on the surface of one side of the fixed mold core 304 facing the movable mold structure 2, and is symmetrically distributed on the fixed mold core 304, the fixed mold core 304 is provided with the injection nozzle 305, one end of the injection nozzle 305 is communicated with the molding cavity 10, and molten materials can be injected into the molding cavity 10 through the injection nozzle 305.

The fixed die plate 302 is fixedly embedded with two symmetrically arranged oblique guide pillars 306 at one side back to the fixed die base 301, the two oblique guide pillars 306 are all in an oblique shape, and gradually incline from the center of the die to the edge of the die from one end embedded on the fixed die plate 302 to the other end, and the two oblique guide pillars 306 are in a splayed shape.

Referring to fig. 2 and 3, the moving mold structure 2 includes a moving mold base 201, a square iron 202, a supporting plate 203, a moving mold plate 204, and a moving mold core 205, which are sequentially arranged from low to high. The two square irons 202 are symmetrically arranged on the surface of the movable mold base 201, the square irons 202 and the movable mold base 201 are fixed through bolts, the supporting plate 203 is fixedly arranged on the square irons 202, the supporting plate 203 is attached to the top surfaces of the two square irons 202, and the square irons 202 and the supporting plate 203 are fixed through bolts. The movable die plate 204 is placed on the supporting plate 203, the guide posts 206 are fixedly arranged on the surface of the supporting plate 203, the through holes 207 are arranged on the supporting plate 203, the through holes 207 penetrate through the surface and the bottom surface of the supporting plate 203, and the guide posts 206 are in sliding fit with the through holes 207.

The surface of the movable mould plate 204 is embedded with a movable mould core 205, the surface of the movable mould core 205 is provided with a mould cavity, and the shape and the structure of the mould cavity are matched with the shape and the structure of an injection-molded product.

Referring to fig. 4 and 5, the movable mold plate 204 is provided with a left slider 401 and a right slider 402, the left slider 401 and the right slider 402 are respectively symmetrically disposed on two sides of the movable mold core 205, the movable mold plate 204 is provided with two sliding grooves 5 extending along the width direction of the movable mold core 205, the two sliding grooves 5 are respectively located on two opposite sides of the movable mold core 205, and the left slider 401 and the right slider 402 are slidably mounted in the sliding grooves 5.

Referring to fig. 5 and 6, a left insert 403 is fixedly mounted on a bolt on a side of the left slide block 401 facing the right slide block 402, and a positioning protrusion 406 protruding from an end surface of the left insert 403 is disposed on an end of the left insert 403 facing the right slide block 402.

Referring to fig. 5 and 6, a right insert 404 is fixedly mounted on one side of the right slide block 402 facing the left slide block 401 by a bolt, a positioning groove 405 is formed at one end of the right insert 404 facing the left slide block 401 in a recessed manner, the positioning groove 405 is opposite to the positioning protrusion 406, and the positioning protrusion 406 is in concave-convex positioning fit with the positioning groove 405 in a mold closing state.

Referring to fig. 2, 5 and 6, a left guide hole 601 is formed in the surface of the left slider 401, the left guide hole 601 penetrates through the upper surface and the lower surface of the left slider 401, a right guide hole 602 is formed in the surface of the right slider 402, the right guide hole 602 penetrates through the upper surface and the lower surface of the right slider 402, one end, away from the fixed die plate 302, of the inclined guide post 306 extends into the left guide hole 601 and the right guide hole 602, the left guide hole 601 and the right guide hole 602 are both in telescopic fit with the inclined guide post 306, when the die is opened, the movable die structure 2 gradually keeps away from the fixed die structure 3, and the left slider 401 and the right slider 402 slide back and back in the sliding groove 5 under the guidance of the inclined guide post 306. During die assembly, the movable die structure 2 gradually approaches the fixed die structure 3, the left slider 401 and the right slider 402 move relatively in the chute 5 under the guidance of the inclined guide post 306, and the molding inserts on the two sliders approach each other and are matched with the fixed die core 304 and the movable die core 205 to form the molding cavity 10 for injection molding of the locking disc 1.

Referring to fig. 3 and 7, the movable mold structure 2 includes a molding rod 8, a sliding sleeve 9 and an inclined guide block mechanism, the sliding sleeve 9 is fixedly sleeved outside the molding rod 8, one end of the molding rod 8 protrudes out of the top of the sliding sleeve 9, and the protruding portion passes through the movable mold core 205, extends into the molding cavity 10, passes through the positioning groove 405 and the positioning protrusion 406, and finally protrudes out of the surface of the positioning protrusion 406. The forming rod 8 corresponds to the first central hole 104 and the second central hole 105 on the locking disc 1, and the first central hole 104 and the second central hole 105 on the locking disc 1 are formed through injection molding through the forming rod 8.

The inclined guide block mechanism comprises a guide block 7 which is fixedly embedded on the support plate 203, a guide groove 701 is formed in the guide block 7, and the guide groove 701 is inclined linearly from one end to the other end gradually towards the direction close to the movable template 204.

One end of the sliding sleeve 9 is integrally formed with a sliding protrusion 901 protruding from the bottom side of the sliding sleeve 9, the sliding protrusion 901 is embedded in the guide groove 701 and is in sliding fit with the guide groove 701, and in the process that the sliding protrusion 901 slides from the lower end to the other end in the guide groove 701, the sliding sleeve 9 drives the forming rod 8 to extend into the forming cavity 10 and sequentially pass through the positioning groove 405 and the positioning protrusion 406.

Referring to fig. 8 and 9, the movable mold structure 2 includes a delay limiting assembly 11, the delay limiting assembly 11 includes a fixing block 1102 and a limiting rod 1101, the fixing block 1102 is fixedly mounted on the outer side surface of the supporting plate 203 through a bolt, one end of the limiting rod 1101 is fixedly mounted on the outer side surface of the movable mold plate 204 through a bolt, a limiting hole 1103 penetrating through the fixing block 1102 is formed in one side of the fixing block 1102, the limiting hole 1103 extends in the height direction of the mold, and the other end of the limiting rod 1101 penetrates through the limiting hole 1103 and is in telescopic fit with the limiting hole 1103.

The limiting rod 1101 penetrates through the limiting hole 1103, a trigger bump 1104 is integrally formed on the outer wall of one end of the limiting rod 1101, the trigger bump 1104 protrudes out of the outer wall of the limiting rod 1101, the trigger bump 1104 is abutted to one side, away from the movable template 204, of the fixing block 1102, when the mold is opened, after the supporting plate 203 moves towards the direction away from the movable template 204 by one end distance, the fixing block 1102 is abutted to the trigger bump 1104, and along with the fact that the supporting plate 203 continues to move towards the direction away from the movable template 204, the supporting plate 203 drives the movable template 204 to synchronously move.

The implementation principle of the injection mold of the locking disc is as follows: after the mold is closed, a molten material enters the molding cavity 10 through the injection nozzle 305, at this time, one end of the molding rod 8 protrudes out of the surface of the positioning protrusion 406, the molding rod 8 is used for molding the first center hole 104 and the second center hole 105 on the locking disc 1, after the product injection molding is completed, when the mold is opened, the movable mold base 201 and the support plate 203 move in the direction away from the molding cavity 10 first, the inclined guide block drives the sliding sleeve 9 to slide in the guide groove 701, one end of the sliding sleeve 9 is in the guide groove 701 and moves from the lower end to the higher end, in the moving process, the sliding sleeve 9 drives the molding rod 8 to retreat from the positioning protrusion 406, the positioning groove 405 and the molding cavity 10, and when the support plate 203 moves until the trigger protrusion 1104 is abutted against one side of the fixed block 1102 away from the movable mold plate 204, the support plate 203 drives the movable mold plate 204 to move synchronously.

The movable mould plate 204 moves towards the direction far away from the fixed mould structure 3, the inclined guide post 306 is in guiding fit with the guide hole, and the left slider 401 and the right slider 402 are driven to be far away from each other, so that the whole forming cavity 10 is opened, and the product is taken down from the mould at the moment.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an injection mold of locking dish which characterized in that: the mold comprises a moving mold structure (2) and a fixed mold structure (3), wherein the fixed mold structure (3) comprises a fixed mold core (304), the moving mold structure (2) comprises a moving mold core (205), a left slide block (401) and a right slide block (402), a left forming insert (403) is fixed on the left slide block (401), a right forming insert (404) is fixed on the right slide block (402), and a forming cavity (10) of a locking disc (1) is formed among the fixed mold core (304), the moving mold core (205), the left forming insert (403) and the right forming insert (404); the movable mould structure (2) comprises a forming cavity (10) which is extended into the bottom of a movable mould core (205) and penetrates through a forming rod (8) at the end parts of a left forming insert (403) and a right forming insert (404), the forming rod (8) corresponds to a first central hole (104) and a second central hole (105) in the locking disc (1), and the movable mould structure (2) further comprises an inclined guide block mechanism which drives the forming rod (8) to withdraw from the forming cavity (10) before the movable mould core (205) and the fixed mould core (304) are opened.

2. The injection mold of a locking disc of claim 1, wherein: the movable mould structure (2) comprises a supporting plate (203), a movable mould plate (204) and a time-delay limiting component (11), wherein the movable mould core (205) is fixedly installed on the movable mould plate (204), an oblique guide block mechanism is fixedly installed on the supporting plate (203), a forming rod (8) is matched with the movable mould core (205) and the movable mould plate (204) in a stretching mode, and the time-delay limiting component (11) drives the movable mould plate (204) to move together in the direction away from the fixed mould mechanism after one end of the movable mould plate (204) is moved back to the movable mould plate (203).

3. The injection mold for a lock plate according to claim 2, wherein: the time-delay limiting assembly (11) comprises a fixing block (1102) and a limiting rod (1101), the fixing block (1102) is fixedly installed on the outer side face of the supporting plate (203), the limiting rod (1101) is fixedly installed on the outer side face of the movable template (204), a limiting hole (1103) is arranged in the fixing block (1102) in a penetrating mode in the height direction of the mold, the limiting hole (1103) is passed through one end of the limiting rod (1101), a triggering lug (1104) is formed in a protruding mode on the side wall of one end of the limiting hole (1103) in a penetrating mode, the supporting plate (203) moves one end of the movable template (204) back to the back, and the triggering lug (1104) is in contact with one side of the fixing block (1102) to drive the movable template (204) to move.

4. The injection mold for a lock plate according to claim 2, wherein: the inclined guide block mechanism comprises a guide block (7) fixed on a support plate (203), a guide groove (701) inclined linearly is formed in the guide block (7), one end of the guide groove (701) is higher than the other end of the guide groove, and one end of a forming rod (8) is embedded in the guide groove (701) and is in sliding fit with the guide groove (701).

5. The injection mold for a lock plate as set forth in claim 4, wherein: the outer fixed cover of shaping pole (8) is equipped with slip cover (9), the one end integrated into one piece of slip cover (9) has slip lug (901), slip lug (901) inlay locate in guide way (701), and with guide way (701) sliding fit.

6. The injection mold of a locking disc of claim 1, wherein: and one end of the left forming insert (403) is convexly provided with a positioning bulge (406), and one end of the right forming insert (404) is concavely provided with a positioning groove (405) which is in concave-convex fit with the positioning bulge (406).

7. The injection mold for a lock plate as set forth in claim 6, wherein: one end of the forming rod (8) sequentially penetrates through the positioning groove (405) and the positioning protrusion (406) and protrudes out of the surface of the positioning protrusion (406).

8. The injection mold of a locking disc of claim 1, wherein: the fixed die structure (3) comprises a fixed die plate (302) and two inclined guide posts (306), the inclined guide posts (306) are obliquely and fixedly mounted on the fixed die plate (302), a left guide hole (601) and a right guide hole (602) which are in sliding fit with the inclined guide posts (306) are respectively arranged on the left sliding block (401) and the right sliding block (402), and the inclined guide posts (306) are arranged at one end of the fixed die plate (302) and gradually incline from the center close to the die to the center far away from the die towards the other end.

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