Core-pulling mechanism of injection mold for automobile parts

Abstract

The utility model relates to the technical field of automobile part injection molds, in particular to an automobile part injection mold core-pulling mechanism which comprises two core-pulling assemblies, a movable mold and a static mold, each core-pulling assembly comprises an insert pin, a rotating cylinder and a rotating rod, a plurality of limiting blocks are arranged on the outer side of each insert pin, and a round hole is formed in each rotating cylinder; a plurality of limiting grooves are formed in the inner side of the circular hole, a driven gear is arranged on the outer side of the rotating cylinder, an auxiliary gear and a driving gear are arranged on the rotating rod, a double-shaft motor and a plurality of supporting legs are arranged below the static mold, a forming groove is formed in the middle of the movable mold and the middle of the static mold, and a pushing plate is arranged at the inner bottom of the forming groove through a hydraulic cylinder; the synchronous belt and the synchronous wheel are driven by the double-shaft motor, so that the synchronous action of the two core-pulling assemblies is realized, the demoulding devices on the two sides can simultaneously and quickly perform core pulling, and the demoulding efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile parts injection mold technical field especially, relates to a kind of automobile parts injection mold core-pulling mechanism. BACKGROUND

[0002] Automobile parts injection mold is the metal model for manufacturing various plastic parts on automobile, it is injected into mold cavity by injection molding process after heating and melting plastic material, and the plastic product of required shape is obtained after demolding after cooling solidification, it is crucial to automobile lightweight, cost control and appearance quality, the core of conventional automobile parts mold is not convenient for automobile parts after injection to be drawn, and the existing core-pulling mechanism, when needing to draw core, it is driven by vibration block to vibrate and is removed from injection automobile parts by inlay needle.

[0003] Prior art patent CN221775181U discloses a kind of automobile parts injection mold core-pulling mechanism, first forming groove is equipped on static mold, second forming groove is equipped on dynamic mold, dynamic mold is installed on static mold by locking device, the side of static mold close to first forming groove is equipped with core-pulling groove, sleeve rod is fixedly installed on static mold, connecting column is slidably installed on sleeve rod, inlay needle is fixedly installed on connecting column, inlay needle penetrates static mold, and extends to first forming groove, connecting column is equipped with circular groove, rotating rod penetrates circular groove, the side of static mold close to core-pulling groove is equipped with through groove, through groove is through with core-pulling groove, rotating rod penetrates through groove, and extends to the outside of static mold, connecting column is moved by moving assembly, inlay needle is driven by rotating rod through connecting column and separated from the hole wall of automobile parts, while moving assembly drives inlay needle and automobile parts to separate by connecting column, so as to avoid that inlay needle is damaged to the hole wall of automobile parts when demolding.

[0004] But in the above prior art, since demolding device is arranged on both sides of static mold, when core-pulling action is carried out, first, the demolding device on one side needs to be operated, then the demolding device on the other side needs to be operated, the demolding process is too cumbersome, thereby reducing the efficiency of demolding. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of automobile parts injection mold core-pulling mechanism, to solve the technical problem that in prior art, since demolding device is arranged on both sides of static mold, when core-pulling action is carried out, first, the demolding device on one side needs to be operated, then the demolding device on the other side needs to be operated, the demolding process is too cumbersome, thereby reducing the efficiency of demolding.

[0006] In order to achieve the above object, the utility model discloses a kind of core-pulling mechanism of injection mould for automobile parts, including two core-pulling assemblies, movable mould and static mould, the core-pulling assembly includes insert pin, rotating cylinder and rotating rod, the outside of the insert pin is provided with multiple limit blocks, the rotating cylinder has circular hole inside, the inside of the circular hole has multiple limit grooves, the outside of the rotating cylinder is provided with driven gear, the rotating rod is provided with pinion and driving gear, the lower portion of the static mould is provided with double-shaft motor and multiple support legs, the middle portion of the movable mould and the static mould has forming groove, the inner bottom of the forming groove is provided with push plate by hydraulic cylinder, and the both ends of the static mould have core-pulling groove, the insert pin is slidably connected with the rotating cylinder and located in the circular hole, and the limit block is located in the limit groove, the rotating cylinder is rotatably connected with the static mould by bearing and located in corresponding core-pulling groove, the rotating rod is rotatably connected with the static mould and located in corresponding core-pulling groove, the rotating rod and the double-shaft motor are connected by synchronous belt and synchronous pulley, and the driving gear is engaged with the driven gear, the movable mould is arranged directly above the static mould.

[0007] Among them, two the core-pulling assemblies are respectively symmetrically arranged at the both ends of the static mould, and one end of the insert pin in the core-pulling assembly extends into the forming groove of the static mould.

[0008] Among them, the core-pulling assembly further includes L-shaped seat, one end of the L-shaped seat is provided with threaded sleeve through bearing, the outside of the threaded sleeve is provided with main gear, the other end of the insert pin has external thread, and the pinion and the other end of the insert pin both extend to the outside of the static mould, the L-shaped seat is fixedly connected with the static mould and located at the outside of the static mould, and the main gear is engaged with the pinion.

[0009] Among them, the core-pulling assembly further includes lifting seat, the lifting seat is fixedly connected with the static mould and located at the outside of the static mould, and the rotating rod is rotatably connected with the lifting seat through bearing and located in the lifting seat.

[0010] Among them, the number of driven gears is two, and two the driven gears are respectively symmetrically arranged on the rotating cylinder, the number of driving gears is two, and two the driving gears are respectively located below corresponding driven gears.

[0011] The utility model discloses a kind of core-pulling mechanisms of injection mould for automobile accessories, including two core-pulling assemblies, movable mould and static mould, the core-pulling assembly includes insert pin, rotating cylinder and rotating rod, the outside of insert pin is provided with multiple limit blocks, rotating cylinder has circular hole inside, the inside of circular hole has multiple limit grooves, the outside of rotating cylinder is provided with driven gear, sub gear and driving gear are provided on rotating rod, the lower portion of static mould is provided with double-shaft motor and multiple support legs, the middle portion of movable mould and static mould has forming groove, the inner bottom of forming groove is provided with push plate by hydraulic cylinder, and both ends of static mould have core-pulling groove, the synchronous belt and the synchronous wheel are driven by the double-shaft motor, the synchronous action of two core-pulling assemblies is realized, this design not only simplifies operation process, also ensure that both sides stripping device can simultaneously, quickly core-pulling, to greatly improve stripping efficiency, in addition, power transmission and conversion are realized inside the core-pulling assembly by precise gear transmission system, ensure the accuracy and stability of core-pulling action, therefore, the core-pulling mechanism not only solves complicated stripping problem, also improves overall production efficiency and product quality, in this way, solve the technical problem that stripping process is too complicated and stripping efficiency is reduced due to being provided with stripping device on both sides of static mould when core-pulling action is performed, first stripping device on one side is operated, then stripping device on the other side is operated. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present utility model, and other drawings can also be obtained by those skilled in the art without creative labor on the premise of the drawings.

[0013] Figure 1 is the three-dimensional view of the present utility model.

[0014] Figure 2 is the front view of the present utility model.

[0015] Figure 3 is the Figure 2 sectional view of line A-A in the present utility model.

[0016] Figure 4 is the Figure 3 enlarged view of part B in the present utility model.

[0017] Figure 5 is the structure schematic view of core-pulling assembly in the present utility model.

[0018] 1 - core pulling assembly, 2 - moving mold, 3 - stationary mold, 4 - pin, 5 - rotating cylinder, 6 - rotating rod, 7 - limiting block, 8 - round hole, 9 - limiting groove, 10 - driven gear, 11 - secondary gear, 12 - driving gear, 13 - double shaft motor, 14 - support leg, 15 - forming groove, 16 - hydraulic cylinder, 17 - pushing plate, 18 - core pulling groove, 19 - L-shaped seat, 20 - threaded sleeve, 21 - main gear, 22 - external thread, 23 - lifting seat, 24 - synchronous belt, 25 - synchronous wheel. DETAILED DESCRIPTION

[0019] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0020] Please refer to Figures 1-5The utility model provides a kind of core pulling mechanism of injection mould for automobile accessories, including two core pulling assemblies 1, movable mould 2 and static mould 3, the core pulling assembly 1 includes insert needle 4, rotating cylinder 5 and rotating lever 6, the outside of insert needle 4 is provided with multiple limit blocks 7, rotating cylinder 5 has round hole 8 inside, the inside of round hole 8 has multiple limit grooves 9, the outside of rotating cylinder 5 is provided with driven gear 10, rotating lever 6 is provided with auxiliary gear 11 and driving gear 12, the lower portion of static mould 3 is provided with double-shaft motor 13 and multiple support legs 14, the middle portion of movable mould 2 and static mould 3 has forming groove 15, the inner bottom of forming groove 15 is provided with push plate 17 by hydraulic cylinder 16, and both ends of static mould 3 have core pulling groove 18, insert needle 4 is connected with rotating cylinder 5 slidingly, and located in round hole 8, and limit block 7 is located in limit groove 9, rotating cylinder 5 is rotatably connected with static mould 3 by bearing, and located in corresponding core pulling groove 18, rotating lever 6 is rotatably connected with static mould 3, and located in corresponding core pulling groove 18, rotating lever 6 and double-shaft motor 13 are linked by synchronous belt 24 and synchronous wheel 25, and driving gear 12 is engaged with driven gear 10, movable mould 2 is arranged on the top of static mould 3, by the design of two core pulling assemblies 1, movable mould 2 and static mould 3, and insert needle 4, rotating cylinder 5 and rotating lever 6 in the core pulling assembly 1, efficient core pulling operation is realized, wherein the sliding connection of insert needle 4 and rotating cylinder 5 and the cooperation of limit block 7 and limit groove 9 ensure the stability and accuracy of core pulling action, at the same time, double-shaft motor 13 is linked with rotating lever 6 by synchronous belt 24 and synchronous wheel 25, efficient power transmission is realized, and core pulling efficiency is further improved, in addition, the setting of push plate 17 and hydraulic cylinder 16 can facilitate demolding operation.

[0021] Wherein, two core pulling assemblies 1 are respectively arranged symmetrically at both ends of static mould 3, and one end of insert needle 4 in the core pulling assembly 1 extends into forming groove 15 of static mould 3, by two core pulling assemblies 1 respectively arranged symmetrically at both ends of static mould 3, the design not only ensures the balance of core pulling action, but also improves core pulling efficiency, at the same time, one end of insert needle 4 in the core pulling assembly 1 extends into forming groove 15 of static mould 3, ensures that injection molding part can closely fit the mould during forming process, avoids the problem of injection molding part deformation or damage, and the symmetrical and balanced design makes the whole core pulling mechanism more stable and reliable when running.

[0022] Secondly, the core pulling assembly 1 further comprises an L-shaped seat 19, one end of the L-shaped seat 19 is provided with a threaded sleeve 20 through a bearing, the outer side of the threaded sleeve 20 is provided with a main gear 21, the other end of the insert pin 4 is provided with an external thread 22, and the other end of the insert pin 4 and the driven gear 11 both extend to the outer side of the static mold 3, the L-shaped seat 19 is fixedly connected with the static mold 3 and located on the outer side of the static mold 3, and the main gear 21 is engaged with the driven gear 11, through the engagement between the main gear 21 and the driven gear 11, the threaded sleeve 20 is driven to rotate, and the insert pin 4 with the external thread 22 is threadedly connected with the threaded sleeve 20, so that the insert pin 4 is slowly removed from the forming groove 15.

[0023] Thirdly, the core pulling assembly 1 further comprises a lifting seat 23, the lifting seat 23 is fixedly connected with the static mold 3 and located on the outer side of the static mold 3, and the rotating rod 6 is rotatably connected with the lifting seat 23 through a bearing and located in the lifting seat 23, by increasing the lifting seat 23 and rotatably connecting the rotating rod 6 with the lifting seat 23 through the bearing, the stability and durability of the core pulling assembly 1 are further improved, the lifting seat 23 not only provides firm support for the rotating rod 6, but also avoids the problems of wear and looseness caused by long-time operation.

[0024] In addition, the number of the driven gears 10 is two, and the two driven gears 10 are symmetrically arranged on the rotating cylinder 5, and the number of the driving gears 12 is two, and the two driving gears 12 are located below the corresponding driven gears 10, through this design, not only the balanced transmission of power is realized, but also the synchronism and coordination of the core pulling action are improved.

[0025] When the injection molding is completed, the double-shaft motor 13 is started, the synchronous belt 24 and the synchronous wheel 25 drive the rotating rod 6 to rotate, the driving gear 12 on the rotating rod 6 meshes with the driven gear 10, thereby driving the rotating cylinder 5 to rotate in the core-pulling groove 18 of the static mold 3, since the insert pin 4 is in sliding connection with the rotating cylinder 5, and the limiting block 7 is located in the limiting groove 9, the insert pin 4 will move along the circular hole 8 with the rotation of the rotating cylinder 5, at the same time, the main gear 21 on the L-shaped seat 19 meshes with the auxiliary gear 11 on the rotating rod 6, so that the other end of the insert pin 4 moves under the action of the threaded sleeve 20 and the external thread 22, when the rotating cylinder 5 rotates to a certain extent, one end of the insert pin 4 is pulled out of the forming groove 15 of the static mold 3, the core-pulling action is realized, at this time, the movable mold 2 is lifted through the hydraulic cylinder 16, the ejector plate 17 pushes the injection molded part out of the static mold 3, the demolding process is completed, in this way, the technical problem that the demolding process is too complicated and the demolding efficiency is reduced due to the fact that the demolding devices are arranged on both sides of the static mold 3 is solved.

[0026] The above only discloses a preferred embodiment of the utility model, of course, cannot limit the scope of the utility model, the person skilled in the art can understand that the whole or part of the above-mentioned embodiment is realized, and the equivalent changes made according to the utility model claim still belong to the range covered by the utility model.

Claims

1. A core-pulling mechanism for an injection mold of automotive parts, characterized in that, The device includes two core-pulling assemblies, a moving mold, and a stationary mold. Each core-pulling assembly includes a pin, a rotating cylinder, and a rotating rod. Multiple limiting blocks are provided on the outer side of the pin. The rotating cylinder has a circular hole with multiple limiting grooves on its inner side. A driven gear is provided on the outer side of the rotating cylinder. A secondary gear and a driving gear are provided on the rotating rod. A dual-axis motor and multiple support legs are provided below the stationary mold. A forming groove is located in the middle of both the moving and stationary molds. A push plate is provided at the bottom of the forming groove via a hydraulic cylinder. Both ends of the stationary mold have core-pulling grooves. The insert pin is slidably connected to the rotating cylinder and is located in the circular hole. The limiting block is located in the limiting groove. The rotating cylinder is rotatably connected to the stationary mold through a bearing and is located in the corresponding core-pulling groove. The rotating rod is rotatably connected to the stationary mold and is located in the corresponding core-pulling groove. The rotating rod is linked to the dual-axis motor through a synchronous belt and a synchronous pulley. The driving gear meshes with the driven gear. The moving mold is located directly above the stationary mold.

2. The core-pulling mechanism for automotive parts injection molds as described in claim 1, characterized in that, The two core-pulling assemblies are symmetrically arranged at both ends of the stationary mold, and one end of the insert pin in the core-pulling assembly extends into the forming groove of the stationary mold.

3. The core-pulling mechanism for automotive parts injection molds as described in claim 2, characterized in that, The core-pulling assembly also includes an L-shaped seat. One end of the L-shaped seat is provided with a threaded sleeve via a bearing. A main gear is provided on the outer side of the threaded sleeve. The other end of the insert pin has an external thread. Both the secondary gear and the other end of the insert pin extend to the outer side of the stationary mold. The L-shaped seat is fixedly connected to the stationary mold and is located on the outer side of the stationary mold. The main gear meshes with the secondary gear.

4. The core-pulling mechanism for automotive parts injection molds as described in claim 3, characterized in that, The core-pulling assembly also includes a support base, which is fixedly connected to the stationary mold and located outside the stationary mold. The rotating rod is rotatably connected to the support base via a bearing and is located inside the support base.

5. The core-pulling mechanism for automotive parts injection molds as described in claim 4, characterized in that, The number of driven gears is two, and the two driven gears are symmetrically arranged on the rotating cylinder. The number of driving gears is two, and the two driving gears are located below the corresponding driven gears.

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