CN214000320U

CN214000320U - Injection mold for thin-shell deep-cavity bottomless cylindrical part

Info

Publication number: CN214000320U
Application number: CN202022749419.0U
Authority: CN
Inventors: 汪峰; 高超
Original assignee: Zhejiang Teng Feng Hardware Plastic Co ltd
Current assignee: Zhejiang Teng Feng Hardware Plastic Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-08-20
Anticipated expiration: 2030-11-24

Abstract

The application relates to a thin-shell deep-cavity bottomless cylindrical part injection mold which comprises a first mold, a second mold and a third mold, wherein the first mold and the second mold are tightly attached to each other, the third mold penetrates between the first mold and the second mold and is cylindrical, and a feeding hole is formed in one side, away from the second mold, of the first mold; the side surface of the first mould close to the second mould is provided with a first type groove, the side surface of the second mould close to the first mould is provided with a second type groove, the first type groove and the second type groove are both semi-cylindrical, and the first type groove and the second type groove form a complete cylindrical cavity with the bottom surface radius larger than that of the third mould; the axis of the cylindrical cavity is superposed with the axis of the third mould, and the first groove, the second groove and the third mould are matched to form a thin-shell deep-cavity bottomless cylindrical cavity; the injection mold further comprises a driving assembly for driving the third mold to move along the axis direction of the third mold. This application has the effect of conveniently taking off the no end cylinder in thin shell deep cavity.

Description

Injection mold for thin-shell deep-cavity bottomless cylindrical part

Technical Field

The application relates to the field of molds, in particular to an injection mold for a thin-shell deep-cavity bottomless cylindrical part.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material.

An existing injection mold for a thin-shell deep-cavity bottomless cylindrical part comprises an upper mold 1 and a lower mold 2, wherein a groove 11 is formed in one side, facing the lower mold 2, of the upper mold 1, and a feed inlet 3 for injection molding is formed in the end face, facing away from the lower mold 2, of the upper mold 1; the lower die 2 comprises a chassis 21 and a column 22 arranged on the chassis 21, the column 22 is inserted in the groove 11, one end of the column 22, which is far away from the chassis 21, abuts against the bottom of the groove 11, and a gap between the side wall of the groove 11 and the column 22 forms a thin-shell deep-cavity bottomless cylindrical die cavity. During injection molding, one end of the upper die 1 close to the chassis 21 is abutted against the chassis 21, molten plastic enters the cavity from the feed port 3, the cylinder 22 is drawn out after the plastic is cooled and hardened, and then the bottomless cylindrical part of the thin-shell deep cavity on the cylinder 22 is taken down.

In view of the above-mentioned related technologies, the inventor believes that there is a defect that it is difficult to remove the thin-shell deep-cavity bottomless cylindrical member because the side wall of the thin-shell deep-cavity bottomless cylindrical member is thin and is attached to the cylinder with few force points.

SUMMERY OF THE UTILITY MODEL

In order to conveniently take down the thin-shell deep-cavity bottomless cylindrical part, the application provides an injection mold for the thin-shell deep-cavity bottomless cylindrical part.

The application provides a no end cylinder injection mold in deep chamber of thin shell adopts following technical scheme:

a thin-shell deep-cavity bottomless cylindrical part injection mold comprises a first mold, a second mold and a third mold, wherein the first mold and the second mold are tightly attached to each other, the third mold penetrates between the first mold and the second mold and is cylindrical, and a feed inlet is formed in one side, away from the second mold, of the first mold; the side surface of the first mould close to the second mould is provided with a first type groove, the side surface of the second mould close to the first mould is provided with a second type groove, the first type groove and the second type groove are both semi-cylindrical, and the first type groove and the second type groove form a complete cylindrical cavity with the bottom surface radius larger than that of the third mould; the axis of the cylindrical cavity is superposed with the axis of the third mould, and the first groove, the second groove and the third mould are matched to form a thin-shell deep-cavity bottomless cylindrical cavity; the injection mold further comprises a driving assembly for driving the third mold to move along the axis direction of the third mold.

Through adopting above-mentioned technical scheme, in the die cavity was entered into from the feed inlet to fused plastics during injection molding, and after the completion of moulding plastics and plastics hardened, drive assembly drive third mould was taken out between first mould and the second mould, then first mould and second mould separation, and the one side outer wall of the no end cylinder in thin shell deep cavity is attached to on the second mould, and the stress point of the no end cylinder in thin shell deep cavity is more this moment to conveniently take off the no end cylinder in thin shell deep cavity from the second mould.

Optionally, the third mold comprises two unit rods, the two unit rods are in the same shape as the unit rods, and the joint of the two unit rods is located in the middle of the cavity; the driving assembly is provided with two groups and respectively drives the two unit rods to move along the axis direction of the driving assembly.

Through adopting above-mentioned technical scheme, divide into two unit poles with the third mould, two unit poles are taken out in first mould and the second mould respectively for the third mould is more convenient and fast when taking out from.

Optionally, the driving assembly includes a connecting rod disposed at an end of the unit rod away from the first mold, a connecting block disposed at an end of the connecting rod away from the unit rod, a lead screw vertically penetrating the connecting block, a motor for driving the lead screw to rotate, and a mounting plate for mounting the lead screw and the motor, the connecting rod is disposed parallel to the unit rod, and the lead screw is parallel to the connecting rod; one end of the screw rod is fixed with an output shaft of the motor, and the other end of the screw rod is rotatably connected to the mounting plate; the motor is fixed on the mounting plate, and the screw rod is in threaded fit with the connecting block.

Through adopting above-mentioned technical scheme, the lead screw is steady, provides power steadily for the unit pole.

Optionally, a rotating part is additionally arranged on the connecting rod, the rotating part is fixed on the mounting plate, and the connecting rod is in threaded fit with the rotating part; the connecting rod and the unit rod are coaxially arranged; when the unit rods are pulled away, the rotating directions of the two unit rods are opposite.

Through adopting above-mentioned technical scheme for the connecting rod also carries out the rotation when being driven by the lead screw, and the connecting rod drives the unit pole and rotates, and the unit pole rotates and makes taking out of unit pole more convenient.

Optionally, two end portions of the first mold are respectively provided with a locking assembly for locking the movement of the unit rod, each locking assembly comprises a locking rod penetrating through the first mold, a mounting bar arranged at one end of the locking rod close to the unit rod, and a spring with one end fixed on the mounting bar, two ends of the first mold are provided with movable grooves for placing the springs, the mounting bars are located in the movable grooves, and the mounting bars are in sliding fit with the movable grooves; a ring groove is formed in the position, corresponding to the locking rod, of the third die, one end, close to the unit rod, of the locking rod is inserted into the ring groove, and the locking rod is in interference fit with the ring groove; and one end of the locking rod, which is far away from the third die, passes through the first die and is positioned outside the first die.

Through adopting above-mentioned technical scheme, when moulding plastics, the lead screw need not to provide power all the time and makes two unit poles closely laminate, and the annular that is located when the unit pole corresponds the locking lever after, can disconnect motor power after locking with the locking lever to resources are saved.

Optionally, an air cylinder for driving the locking rod to move vertically and a bracket for mounting the air cylinder are additionally arranged at one end of the locking rod, which is far away from the third die, and the bracket is fixed on the first die; the cylinder is arranged vertically, and an output shaft of the cylinder is fixedly connected with one end, far away from the third die, of the locking rod.

Through adopting above-mentioned technical scheme, because locking lever and annular interference fit need exert certain power when the locking lever is taken out to needs, the cylinder replaces the manual work to take out the locking lever, has improved work efficiency.

Optionally, an end surface of the locking rod, which is close to one end of the third mold, is an inclined surface, and the inclined surface is inclined downward from one end away from the cavity to one end close to the cavity.

By adopting the technical scheme, when the unit rod is inserted, the air cylinder does not need to work, and the unit rod enables the locking rod to automatically rise along the inclined surface; when the locking rod meets the ring groove, the locking rod is clamped in the ring groove under the action of the spring, so that the position of the unit rod is locked.

Optionally, a limiting groove is formed in the end face of one of the unit rods located in the cavity, and a limiting block is arranged on the end face of the other unit rod located in the cavity and inserted into the limiting groove.

By adopting the technical scheme, the two unit rods can be conveniently aligned after being inserted into the cavity.

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

1. after the injection molding is completed and the plastic is hardened, the third mold is drawn away, the first mold is separated from the second mold, the side wall of one half of the thin-shell deep-cavity bottomless cylindrical part is located on the second mold, the acting points are multiple, and the thin-shell deep-cavity bottomless cylindrical part is more convenient to take down.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present application;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a cross-sectional view of a drive assembly in an embodiment of the present application;

fig. 4 is a sectional view of a mold in the related art.

Description of reference numerals: 1. an upper die; 11. a groove; 2. a lower die; 21. a chassis; 22. a cylinder; 3. a feed inlet; 4. a first mold; 41. a first groove; 42. a movable groove; 5. a second mold; 51. a second groove; 6. a third mold; 61. a unit bar; 611. a limiting groove; 612. a limiting block; 613. a ring groove; 7. a drive assembly; 71. a connecting rod; 72. connecting blocks; 73. a screw rod; 74. a motor; 75. mounting a plate; 8. a locking assembly; 81. a locking lever; 811. mounting a bar; 812. an inclined surface; 82. a spring; 83. a cylinder; 84. a support; 9. a rotating member; 91. avoiding the hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses thin-shell deep-cavity bottomless cylindrical part injection mold. Referring to fig. 1, the injection mold includes a first mold 4 and a second mold 5 attached to each other, a third mold 6 penetrating through a connecting surface of the first mold 4 and the second mold 5 and having a cylindrical shape 22, and a driving assembly 7 for driving the third mold 6 to move along its own axis direction.

First type groove 41 has been seted up on the side of first mould 4 towards second mould 5, second type groove 51 has been seted up on the side of second mould 5 towards first mould 4, and first type groove 41 and second type groove 51 are the semi-cylindrical of size unanimity, and first type groove 41 and second type groove 51 form an inclosed cylinder cavity, and the bottom surface radius of cylinder cavity is greater than the section radius of third mould 6. The half slot that is used for wearing to establish third mould 6 is all offered at the both ends of first mould 4 and second mould 5, and the half slot of first mould 4 and the half slot of second mould 5 form a complete round hole to third mould 6 and round hole interference fit. The first type groove 41, the second type groove 51 and the third mould 6 are matched to form a thin-shell deep-cavity bottomless cylindrical mould cavity.

The first mold 4 is provided with a feeding hole 3, molten plastic enters from the feeding hole 3 and is filled in the cavity during injection molding, after injection molding is completed and the plastic is cooled and hardened, the driving assembly 7 drives the third mold 6 to be drawn out from the cavity, the first mold 4 is separated from the second mold 5 after the third mold 6 is drawn out, and finally the thin-shell deep-cavity bottomless cylindrical part is taken down.

The third die 6 consists of two unit rods 61, one ends of the two unit rods 61 far away from the die cavity are both connected with a driving assembly 7, and the connection position of the two unit rods 61 is positioned in the middle of the die cavity. The end face of one of the unit rods 61 in the cavity is provided with a limiting groove 611, the end face of the other unit rod 61 in the cavity is provided with a limiting block 612 corresponding to the limiting groove 611 in shape, the limiting block 612 is inserted into the limiting groove 611, and the limiting block 612 and the limiting groove 611 are in interference fit. The limiting groove 611 and the limiting block 612 are truncated cone-shaped.

Referring to fig. 1 and 3, the driving assembly 7 includes a connecting rod 71 fixed to an end of the unit rod 61 away from the cavity, a connecting block 72 rotatably connected to an end of the connecting rod 71 away from the unit rod 61, a screw rod 73 passing through the connecting block 72, a motor 74 for driving the screw rod 73 to rotate, and a mounting plate 75 for mounting the screw rod 73 and the motor 74. The axis of the connecting rod 71 is collinear with the axis of the unit rod 61, and the screw rod 73 is parallel to the connecting rod 71. The motor 74 is fixed on the mounting plate 75, one end of the screw rod 73 is fixed on the output shaft of the motor 74, and the other end of the screw rod 73 is rotatably connected on the mounting plate 75. The screw 73 is screw-fitted to the connecting block 72.

In order to facilitate the extraction of the unit bars 61, the two unit bars 61 are rotated about their own axes when extracted, and a rotating member 9 is added to each connecting rod 71. The rotation member 9 is a rectangular parallelepiped, and one end of the rotation member 9 is fixed to the mounting plate 75. The outer wall of the connecting rod 71 is provided with threads, the connecting rod 71 penetrates through the rotating member 9, and the connecting rod 71 is in threaded fit with the rotating member 9. When the screw rod 73 rotates to drive the connecting block 72 to move away from the cavity, the connecting rods 71 begin to rotate due to the action of the threads while being pulled out of the cavity, and the rotating directions of the two connecting rods 71 are set to be opposite, namely the thread directions of the two connecting rods 71 are opposite.

The lead screw 73 is located the connecting rod 71 under, rotates the piece 9 and is located between connecting block 72 and the motor 74, rotates and offers on the piece 9 to be used for wearing to establish the hole 91 of dodging of lead screw 73, dodges hole 91 inner wall and lead screw 73 clearance fit.

Referring to fig. 1 and 2, in order to lock the unit bar 61 at the time of injection molding, locking members 8 are additionally provided in both ends of the first mold 4. The locking assembly 8 includes a locking rod 81 disposed through one end of the first mold 4, a spring 82 disposed outside the locking rod 81, a mounting bar 811 for mounting the spring 82, a cylinder 83 for driving the locking rod 81 to move in the vertical direction, and a bracket 84 for mounting the cylinder 83. The bracket 84 is fixed on the first mold 4, the cylinder 83 is vertically fixed on the bracket 84, and a piston rod of the cylinder 83 is fixedly connected with the locking rod 81. The first mold 4 has two ends each opened with a movable groove 42 for placing a spring 82, and a mounting bar 811 is fixed to one end of the locking lever 81 close to the unit lever 61. One end of the spring 82 is fixed to the mounting bar 811, and the other end abuts against a side wall of the movable groove 42 away from the unit lever 61. An end of the locking lever 81 toward the unit lever 61 is provided as an inclined surface 812, and the inclined surface 812 is provided inclined downward from an end away from the cavity toward an end close to the cavity. The unit rod 61 is provided with a ring groove 613 arranged along the circumferential direction thereof at a position corresponding to the locking rod 81, the end of the locking rod 81 is inserted into the ring groove 613, and the locking rod 81 is in interference fit with the ring groove 613.

The implementation principle of the embodiment of the application is as follows: during injection molding, the two unit rods 61 are abutted against each other, the locking rods 81 are inserted into the corresponding annular grooves 613, and molten plastic enters the cavity from the feed port 3.

After the plastic in the cavity is cooled and hardened, the cylinder 83 is started, the cylinder 83 drives the locking rod 81 to ascend, so that after the end part of the locking rod 81 leaves the annular groove 613, the motor 74 is started again, the screw rod 73 rotates, so that the connecting block 72 drives the connecting rod 71 to move towards the direction away from the cavity, and the connecting rod 71 rotates around the axis of the connecting rod 71 under the action of the rotating piece 9. After the two unit rods 61 rotate in opposite directions and are pulled out of the cavity, the first die 4 and the second die 5 are separated, and the bottomless cylindrical part of the thin-shell deep cavity is taken out.

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

1. The utility model provides a no end cylinder injection mold in deep chamber of thin shell which characterized in that: the device comprises a first die (4) and a second die (5) which are tightly attached to each other, and a third die (6) which is arranged between the first die (4) and the second die (5) in a penetrating way and is in a cylindrical shape (22), wherein a feeding hole (3) is formed in one side, deviating from the second die (5), of the first die (4); the side surface of the first mould (4) close to the second mould (5) is provided with a first type groove (51) (41), the side surface of the second mould (5) close to the first mould (4) is provided with a second type groove, the first type groove (51) (41) and the second type groove are both semi-cylindrical, and the first type groove (51) (41) and the second type groove form a complete cylinder (22) cavity with the bottom surface radius larger than that of the third mould (6); the axis of the cavity of the cylinder (22) is superposed with the axis of the third mould (6), and the first type groove (51) (41), the second type groove and the third mould (6) are matched to form a thin-shell deep-cavity bottomless cylindrical cavity; the injection mould also comprises a driving assembly (7) for driving the third mould (6) to move along the axial direction of the third mould (6).

2. The thin-shell deep-cavity bottomless cylinder injection mold as claimed in claim 1, wherein: the third die (6) comprises two unit rods (61), the two unit rods (61) are consistent with the unit rods (61) in shape, and the connecting position of the two unit rods (61) is located in the middle of the cavity; the driving assembly (7) is provided with two groups and respectively drives the two unit rods (61) to move along the axis direction of the driving assembly.

3. The thin-shell deep-cavity bottomless cylinder injection mold as claimed in claim 2, wherein: the driving assembly (7) comprises a connecting rod (71) arranged at the end part of the unit rod (61) far away from the first die (4), a connecting block (72) arranged at one end of the connecting rod (71) far away from the unit rod (61), a screw rod (73) vertically penetrating through the connecting block (72), a motor (74) used for driving the screw rod (73) to rotate and a mounting plate (75) used for mounting the screw rod (73) and the motor (74), the connecting rod (71) is arranged in parallel with the unit rod (61), and the screw rod (73) is parallel with the connecting rod (71); one end of the screw rod (73) is fixed with an output shaft of the motor (74), and the other end of the screw rod is rotatably connected to the mounting plate (75); the motor (74) is fixed on the mounting plate (75), and the screw rod (73) is in threaded fit with the connecting block (72).

4. The thin-shell deep-cavity bottomless cylinder injection mold as claimed in claim 3, wherein: a rotating piece (9) is additionally arranged on the connecting rod (71), the rotating piece (9) is fixed on the mounting plate (75), and the connecting rod (71) is in threaded fit with the rotating piece (9); the connecting rod (71) and the unit rod (61) are coaxially arranged; when the unit rods (61) are pulled away, the rotating directions of the two unit rods (61) are opposite.

5. The thin-shell deep-cavity bottomless cylinder injection mold as claimed in claim 2, wherein: two ends of the first die (4) are respectively provided with a locking assembly (8) for locking the movement of the unit rod (61), each locking assembly (8) comprises a locking rod (81) penetrating through the first die (4), a mounting bar (811) arranged at one end of the locking rod (81) close to the unit rod (61) and a spring (82) with one end fixed on the mounting bar (811), two ends of the first die (4) are provided with movable grooves (42) for placing the springs (82), the mounting bar (811) is positioned in the movable grooves (42), and the mounting bar (811) is in sliding fit with the movable grooves (42); a ring groove (613) is formed in the position, corresponding to the locking rod (81), of the third mold (6), one end, close to the unit rod (61), of the locking rod (81) is inserted into the ring groove (613), and the locking rod (81) is in interference fit with the ring groove (613); one end, far away from the third die (6), of the locking rod (81) penetrates through the first die (4) and is located outside the first die (4).

6. The thin-shell deep-cavity bottomless cylinder injection mold as claimed in claim 5, wherein: an air cylinder (83) used for driving the locking rod (81) to move vertically and a support (84) used for mounting the air cylinder (83) are additionally arranged at one end, away from the third die (6), of the locking rod (81), and the support (84) is fixed on the first die (4); the air cylinder (83) is vertically arranged, and an output shaft of the air cylinder (83) is fixedly connected with one end, far away from the third die (6), of the locking rod (81).

7. The thin-shell deep-cavity bottomless cylinder injection mold as claimed in claim 5, wherein: the end face of one end, close to the third die (6), of the locking rod (81) is an inclined face (812), and the inclined face (812) is arranged in a manner that the inclined face is inclined downwards from one end, away from the cavity, to one end, close to the cavity.

8. The thin-shell deep-cavity bottomless cylinder injection mold as claimed in claim 2, wherein: a limiting groove (611) is formed in the end face, located in the cavity, of one unit rod (61), a limiting block (612) is arranged on the end face, located in the cavity, of the other unit rod (61), and the limiting block (612) is inserted into the limiting groove (611).