CN114248401A

CN114248401A - Multistage radian-change-adjusting injection mold

Info

Publication number: CN114248401A
Application number: CN202111525652.3A
Authority: CN
Inventors: 梁松灵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-03-29

Abstract

The invention discloses an injection mold for multi-stage radian change adjustment, which comprises a lower mold, wherein a mold cavity is formed in the lower mold, a connecting seat is integrally formed on the outer wall of the lower mold, an installation cavity is formed in the connecting seat, a telescopic rod is fixed on the inner wall of the installation cavity, a motor is fixed at the driving end of the telescopic rod, an installation rod is fixed at the driving end of the motor, a plurality of discs with gradually increased diameters are uniformly fixed on the outer wall of the installation rod, and a sliding groove communicated with the interior of the mold cavity is formed in the inner wall of the installation cavity. The invention realizes the multi-stage radian adjustment of the formed workpiece by replacing the discs with different diameters and inserting the discs into the chute, and extrudes the pressing plate to move downwards through the downward movement of the counterweight ball when the discs are inserted into the chute, so that the sealing plate automatically moves inwards to be contacted with the discs to perform sealing operation, the stable operation of the workpiece forming operation is ensured, and the vibration is generated through the reciprocating movement impact of the right-angle rod when the discs are moved out, so as to accelerate the demoulding.

Description

Multistage radian-change-adjusting injection mold

Technical Field

The invention relates to the technical field of injection molds, in particular to an injection mold with multistage radian change adjustment.

Background

Injection molding is a process used to mass produce parts of some complex shapes. The injection mold is a tool for realizing injection molding, and specifically, the injection mold injects heated and melted plastics into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

The prior art CN110280660B discloses a high elasticity shock-resistant hinge mold with adjustable radian, which comprises a mold base, wherein a built-in groove is formed in the mold base, a return spring is movably mounted in the built-in groove, a fixing bolt is movably mounted at the lower end of the return spring, a press mold is movably mounted at the upper end of the mold base, a connecting mounting groove is formed in the press mold, a mounting base is fixedly mounted in the connecting mounting groove, a magnetic joint is fixedly mounted at the lower end of the mounting base, a connecting rod is movably mounted at the lower end of the magnetic joint, a fixing clamp hole is reserved on the connecting rod, a positioning pin is movably mounted in the fixing clamp hole, and a positioning clamp block is fixedly mounted on the positioning pin; however, there are the following problems: the disassembly, replacement and installation of the upper part of the mold are needed when the radian is adjusted, the whole process is inconvenient, and the injection molding efficiency is affected.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides an injection mold with multi-stage radian change adjustment.

In order to achieve the purpose, the invention adopts the following technical scheme:

an injection mold capable of realizing multistage radian change adjustment comprises a lower mold, wherein a mold cavity is formed in the lower mold, a connecting seat is integrally formed on the outer wall of the lower mold, an installation cavity is formed in the connecting seat, a telescopic rod is fixed on the inner wall of the installation cavity, a motor is fixed at the driving end of the telescopic rod, an installation rod is fixed at the driving end of the motor, a plurality of disks with gradually increased diameters are uniformly fixed on the outer wall of the installation rod, a sliding groove communicated with the interior of the mold cavity is formed in the inner wall of the installation cavity, limiting grooves are formed in the inner walls of two ends of the sliding groove, a sliding rod is slidably arranged in each limiting groove, a reset spring is fixedly connected between the end part of the sliding rod and the inner wall of the limiting groove, a sealing plate is fixed at the other end of the sliding rod, a pressing plate is arranged in the installation cavity in the sliding manner, and a telescopic spring is fixedly connected between the lower side wall of the pressing plate and the inner bottom wall of the installation cavity, a first steel wire rope is fixed on the outer wall of one end, located in the installation cavity, of each sealing plate, the lower end of the first steel wire rope is fixedly connected with the upper side wall of the pressing plate, and the lower side wall of each disc is connected with an extrusion mechanism;

the extrusion mechanism is including fixing the guide bar of lateral wall under the disc, the tip slip cap of guide bar is equipped with the slide pipe, the outer wall cover of guide bar is equipped with coupling spring, coupling spring's both ends respectively with the outer wall of guide bar and the tip outer wall fixed connection of slide pipe, the lower lateral wall of disc still is fixed with the connecting pipe, install leading wheel two on the connecting pipe, the lower lateral wall of slide pipe is fixed with wire rope two, the tip of wire rope two is walked around leading wheel two and is set up and fixedly connected with counterweight ball.

Preferably, still install on the inner wall of installation cavity with wire rope one assorted guiding mechanism, guiding mechanism is including installing the leading wheel one on the installation intracavity wall, the setting of leading wheel is walked around to the tip of wire rope one.

Preferably, the diameter of the disc is inversely proportional to the weight of the weight ball located thereon.

Preferably, the diameter of the disc is inversely proportional to the spring constant of the connecting spring located thereon.

Preferably, the two sealing plates are provided with an arc-shaped surface at the end close to each other.

Preferably, still set up the cavity that is located the die cavity outside in the lower mould, every the outer wall of leading wheel one all is fixed with the bull stick, the tip of bull stick runs through and extends to in the cavity and is fixed with the carousel, it is connected with the connecting rod to rotate on the outer wall of carousel, the tip rotation of connecting rod is connected with the right angle pole, slide on the right angle pole and insert and be equipped with the gag lever post, the gag lever post is fixed in the cavity.

Preferably, the connecting position of the connecting rod and the rotating disc is deviated from the circle center of the rotating disc.

Preferably, the farthest distance between the outer wall of each disc and the center of the mounting rod is equal.

Compared with the prior art, this injection mold that multistage radian changes and adjusts has:

the invention realizes the multi-stage radian adjustment of the formed workpiece by replacing the discs with different diameters and inserting the discs into the chute, and extrudes the pressing plate to move downwards through the downward movement of the counterweight ball when the discs are inserted into the chute, so that the sealing plate automatically moves inwards to be contacted with the discs to perform sealing operation, the stable operation of the workpiece forming operation is ensured, and the vibration is generated through the reciprocating movement impact of the right-angle rod when the discs are moved out, so as to accelerate the demoulding.

Drawings

FIG. 1 is a schematic view of an internal structure of an injection mold with multi-stage radian change adjustment according to the present invention;

FIG. 2 is a schematic diagram of an external structure of an injection mold with multi-stage radian change adjustment according to the present invention;

FIG. 3 is an enlarged view of the structure of portion A of FIG. 1;

FIG. 4 is a side view of a disk in a multi-stage radian change adjustment injection mold according to the present invention;

FIG. 5 is a top cross-sectional view of a multi-stage radian change adjustable injection mold according to the present invention;

fig. 6 is a side sectional view of an injection mold with multi-stage radian change adjustment according to the present invention.

In the figure: the device comprises a lower die 1, a die cavity 2, a mounting cavity 3, a sliding groove 4, a motor 5, a telescopic rod 6, a circular disk 7, a pressing plate 8, a counterweight ball 9, a guide wheel I10, a sealing plate 11, a steel wire rope I12, a connecting pipe 13, a sliding pipe 14, a guide rod 15, a connecting spring 16, a guide wheel II 17, a steel wire rope II 18, an arc-shaped surface 19, a limiting rod 20, a right-angle rod 21, a rotating disk 22, a connecting rod 23, a sliding rod 24 and a return spring 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, an injection mold for multi-level radian change adjustment comprises a lower mold 1, a mold cavity 2 is arranged on the lower mold 1, a connecting seat is integrally formed on the outer wall of the lower mold 1, an installation cavity 3 is arranged in the connecting seat, an expansion link 6 is fixed on the inner wall of the installation cavity 3, a motor 5 is fixed at the driving end of the expansion link 6, an installation rod is fixed at the driving end of the motor 5, a plurality of disks 7 with gradually increasing diameters are uniformly fixed on the outer wall of the installation rod, when the radian of a workpiece is adjusted, the motor 5 is started to drive the installation rod to rotate, the disks 7 on one side of a chute 4 are replaced, because the diameters of the disks 7 are different, when the disks 7 extend out of the same width, the radians on the outer wall of the disks 7 are different in size, after the disks 7 are replaced, the driving end of the expansion link 6 drives the motor 5 to move, so that the end of the disks 7 are inserted into the chute 4, the raw materials contact with the outer wall of disc 7 in die cavity 2, can realize the regulation of work piece outer wall radian size, and the farthest distance size of every disc 7 outer wall apart from the installation pole centre of a circle equals, when stretching out of 6 drive ends of telescopic link promptly, the length size that disc 7 removed toward spout 4 is unanimous all the time.

Offer spout 4 with the inside intercommunication of die cavity 2 on the inner wall of installation cavity 3, the spacing groove has all been seted up on the both ends inner wall of spout 4, it is provided with slide bar 24 all to slide in every spacing groove, fixedly connected with reset spring 25 between the tip of slide bar 24 and the inner wall of spacing groove, the other end of slide bar 24 is fixed with closing plate 11, the tip of two closing plate 11 keeps away from each other under reset spring 25's spring action, the one end that two closing plate 11 are close to mutually all is provided with arcwall face 19, changing into the line by the face when arcwall face 19 sets up to make closing plate 11 and disc 7 contact, even carry out the change of different discs 7, closing plate 11 also can laminate with the outer wall of disc 7, guarantee sealed effect, guarantee that the raw materials can not get into in installation cavity 3 and the cavity.

A pressing plate 8 is arranged in the mounting cavity 3 in a sliding manner, an expansion spring is fixedly connected between the lower side wall of the pressing plate 8 and the inner bottom wall of the mounting cavity 3, a first steel wire rope 12 is fixed on the outer wall of one end, located in the mounting cavity 3, of each sealing plate 11, a guide mechanism matched with the first steel wire rope 12 is further installed on the inner wall of the mounting cavity 3, the guide mechanism comprises a first guide wheel 10 installed on the inner wall of the mounting cavity 3, the end portion of the first steel wire rope 12 is arranged around the first guide wheel 10, the lower end of the first steel wire rope 12 is fixedly connected with the upper side wall of the pressing plate 8, an extrusion mechanism is connected with the lower side wall of each disc 7, the pressing plate 8 bounces upwards under the elastic force of the expansion spring, the first steel wire rope 12 is not pulled downwards, the sealing plate 11 is pulled outwards under the reverse elastic force of a return spring 25, and the discs 7 are conveniently inserted into the sliding grooves 4;

the extrusion mechanism comprises a guide rod 15 fixed on the lower side wall of the disc 7, a sliding pipe 14 is slidably sleeved at the end part of the guide rod 15, a connecting spring 16 is sleeved on the outer wall of the guide rod 15, two ends of the connecting spring 16 are respectively fixedly connected with the outer wall of the guide rod 15 and the outer wall of the end part of the sliding pipe 14, a connecting pipe 13 is further fixed on the lower side wall of the disc 7, a second guide wheel 17 is installed on the connecting pipe 13, a second steel wire rope 18 is fixed on the lower side wall of the sliding pipe 14, the end part of the second steel wire rope 18 bypasses the second guide wheel 17 and is fixedly connected with a counterweight ball 9, the diameter of the disc 7 is inversely proportional to the weight of the counterweight ball 9 positioned thereon, the diameter of the disc 7 is inversely proportional to the elastic coefficient of the connecting spring 16 positioned thereon, namely the counterweight ball 9 with a larger diameter of the disc 7 is light in weight, the elastic coefficient of the connecting spring 16 is also small, and the end parts of the plurality of the sliding pipes 14 are ensured to be consistent through the matching of the connecting spring 16 and the counterweight ball 9, when the disc 7 is replaced, the telescopic rod 6 drives the disc 7 to be inserted into the chute 4, the sliding pipe 14 is contacted with the inner wall of the installation cavity 3 to be extruded and contracted, the counterweight ball 9 moves downwards to be contacted with the pressing plate 8, the pressing plate 8 moves downwards, the pressing plate 8 drives the end part of the steel wire rope I12 to move downwards, the upper end of the steel wire rope I12 pulls the sealing plate 11 to move inwards to be contacted with the outer wall of the disc 7, sealing work is carried out, when the discs 7 with different diameters extend out of the same length, the lengths between the disc 7 and the inner walls on the two sides of the chute 4 are different, the disc 7 with small diameter is large in distance between the inner walls on the two sides of the chute 4, the disc 7 with large diameter is small in distance between the inner walls on the two sides of the chute 4, the counterweight ball 9 is in inverse proportion to the diameter of the disc 7, the counterweight ball 9 on the disc 7 with small diameter is large in weight, and the pressing plate 8 can move downwards by a larger amplitude, the clamp plate 8 then can remove more distances through a wire rope 12 pulling closing plate 11, make closing plate 11 can support tightly with the outer wall contact of disc 7, realize sealed work, counterweight ball 9 weight on the disc 7 that the diameter is big is little, can extrude the less range of clamp plate 8 lapse promptly, clamp plate 8 then can remove more distance of end through a wire rope 12 pulling closing plate 11, make closing plate 11 can support tightly with the outer wall contact of disc 7, realize sealed work, consequently, change disc 7 of different diameter sizes, closing plate 11 homoenergetic and disc 7 contact.

A cavity positioned outside the die cavity 2 is further formed in the lower die 1, a rotating rod is fixed on the outer wall of each guide wheel I10, the end part of each rotating rod penetrates through and extends into the cavity and is fixed with a rotating disc 22, a connecting rod 23 is rotatably connected to the outer wall of the rotating disc 22, a right-angle rod 21 is rotatably connected to the end part of the connecting rod 23, a limiting rod 20 is slidably inserted on the right-angle rod 21, the limiting rod 20 is fixed in the cavity, the joint of the connecting rod 23 and the rotating disc 22 is arranged to deviate from the center of the rotating disc 22, after a workpiece is formed, the driving end of the telescopic rod 6 is retracted, the steel wire rope I12 moves upwards, the guide wheel I10 is driven to rotate by the steel wire rope I12, the rotating rod drives the rotating disc 22 to rotate, further, the diameter of the guide wheel I10 is smaller than that of the rotating disc 22, the guide wheel I10 can be driven to rotate for more turns in the moving process of the steel wire rope I12, and the rotating disc 22 drives the end part of the connecting rod 23 to do circular motion, the other end of the connecting rod 23 moves left and right to drive the right-angle rod 21 to slide on the outer wall of the limiting rod 20, and the vibration of the lower die 1 can be realized through the continuous contact of the right-angle rod 21 and the inner wall of the cavity, so that the separation between the formed workpiece and the inner wall of the die cavity 2 is accelerated, and the demoulding is accelerated.

Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The injection mold comprises a lower mold (1) and is characterized in that a mold cavity (2) is formed in the lower mold (1), a connecting seat is integrally formed on the outer wall of the lower mold (1), a mounting cavity (3) is formed in the connecting seat, a telescopic rod (6) is fixed on the inner wall of the mounting cavity (3), a motor (5) is fixed at the driving end of the telescopic rod (6), a mounting rod is fixed at the driving end of the motor (5), a plurality of discs (7) with gradually increasing diameters are uniformly fixed on the outer wall of the mounting rod, a sliding groove (4) communicated with the interior of the mold cavity (2) is formed in the inner wall of the mounting cavity (3), limiting grooves are formed in the inner walls of two ends of the sliding groove (4), a sliding rod (24) is arranged in each limiting groove in a sliding manner, a reset spring (25) is fixedly connected between the end part of the sliding rod (24) and the inner wall of the limiting groove, a sealing plate (11) is fixed at the other end of the sliding rod (24), a pressing plate (8) is arranged in the mounting cavity (3) in a sliding mode, a telescopic spring is fixedly connected between the lower side wall of the pressing plate (8) and the inner bottom wall of the mounting cavity (3), a steel wire rope I (12) is fixed on the outer wall of one end, located in the mounting cavity (3), of each sealing plate (11), the lower end of each steel wire rope I (12) is fixedly connected with the upper side wall of the pressing plate (8), and the lower side wall of each disc (7) is connected with an extrusion mechanism;

extrusion mechanism is including fixing guide bar (15) of lateral wall under disc (7), the tip slip cover of guide bar (15) is equipped with slide pipe (14), the outer wall cover of guide bar (15) is equipped with connecting spring (16), the both ends of connecting spring (16) respectively with the outer wall of guide bar (15) and the tip outer wall fixed connection of slide pipe (14), the lower lateral wall of disc (7) still is fixed with connecting pipe (13), install leading wheel two (17) on connecting pipe (13), the lower lateral wall of slide pipe (14) is fixed with wire rope two (18), the tip of wire rope two (18) is walked around leading wheel two (17) and is set up and fixedly connected with counterweight ball (9).

2. The injection mold with the multi-stage radian change adjustment function as claimed in claim 1, wherein a guide mechanism matched with the first steel wire rope (12) is further mounted on the inner wall of the mounting cavity (3), the guide mechanism comprises a first guide wheel (10) mounted on the inner wall of the mounting cavity (3), and the end of the first steel wire rope (12) is arranged to bypass the first guide wheel (10).

3. A multi-stage radian-change-adjustable injection mold according to claim 1, wherein the diameter of the disc (7) is inversely proportional to the weight of the counterweight ball (9) located thereon.

4. A multi-stage radian-change-adjustable injection mold according to claim 1, wherein the diameter of the disk (7) is inversely proportional to the spring constant of the connecting spring (16) located thereon.

5. An injection mould with multi-stage radian-change adjustment according to claim 1, wherein the two sealing plates (11) are provided with an arc-shaped surface (19) at the ends close to each other.

6. The injection mold with the multistage radian change adjustment function according to claim 1, wherein a cavity located outside the mold cavity (2) is further formed in the lower mold (1), a rotating rod is fixed to the outer wall of each guide wheel I (10), the end of each rotating rod penetrates through the cavity and is fixed to a rotating disc (22), a connecting rod (23) is rotatably connected to the outer wall of each rotating disc (22), a right-angle rod (21) is rotatably connected to the end of each connecting rod (23), a limiting rod (20) is slidably inserted into each right-angle rod (21), and each limiting rod (20) is fixed to the corresponding cavity.

7. The injection mold with multi-stage radian-change adjustment function of claim 1, wherein the joint of the connecting rod (23) and the rotating disc (22) is arranged to deviate from the center of the rotating disc (22).

8. The injection mold with multi-stage radian-change adjustment function as claimed in claim 1, wherein the farthest distance from the outer wall of each disc (7) to the center of the mounting rod is equal.