CN218315001U

CN218315001U - All-round back-off film forming die

Info

Publication number: CN218315001U
Application number: CN202221980626.XU
Authority: CN
Inventors: 李莉娜
Original assignee: Kunshan Fengshi Electronic Appearance Application Technology Co ltd
Current assignee: Kunshan Fengshi Electronic Appearance Application Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-01-17
Anticipated expiration: 2032-07-29

Abstract

The utility model relates to the technical field of film forming dies, in particular to a full-circle back-off film forming die, which comprises an upper die base, a lower die base and a die core, wherein the bottom of the upper die base is fixedly connected with an upper clamping plate, and the top of the lower die base is movably connected with a lower clamping plate; an operation groove is formed in the lower clamping plate, and a sliding block core pulling mechanism is arranged in the operation groove; the sliding block core pulling mechanism comprises a sliding block, a sliding block driving lever and a sliding block pressing plate; the sliding block deflector rod is fixedly connected with the lower die holder and is obliquely arranged in a direction away from the die core; the sliding block is connected with the lower clamping plate through the sliding block pressing plate; the sliding block moves towards the direction close to or away from the die core under the guiding action of the sliding block shifting rod. The utility model discloses a slider mechanism of loosing core can realize the all around back-off of film, and the back-off volume is big, and the film is difficult to warp when taking out the film.

Description

All-round back-off film forming die

Technical Field

The utility model relates to a film forming die technical field specifically is a whole week back-off film forming die.

Background

The film is a thin and soft transparent sheet, and is widely applied to the industries of electronics, machinery, printing and the like.

The film is usually processed and formed by extrusion, blow molding, calendering, casting and stretching.

The existing film forming technology generally adopts a forced-release structure for the inverted-buckle film, and in order to safely and smoothly carry out forced-release, on one hand, the inverted-buckle amount can be reduced, on the other hand, the inverted-buckle can only be carried out on one side or two sides, the inverted-buckle cannot be carried out all around, otherwise, the film cannot be taken out or is easy to deform when being taken out, and the film cannot be used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a film forming die is invertd all around can realize the film all around back-off to the back-off volume is big, get the membrane degree of difficulty low.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a full-circumference inverted-buckle film forming die, comprising: the die comprises an upper die holder, a lower die holder and a die core, wherein the bottom of the upper die holder is fixedly connected with an upper clamping plate, and the top of the lower die holder is movably connected with a lower clamping plate;

an operation groove is formed in the lower clamping plate, and a sliding block core pulling mechanism is arranged in the operation groove;

the sliding block core pulling mechanism comprises a sliding block, a sliding block driving lever and a sliding block pressing plate; the sliding block deflector rod is fixedly connected with the lower die holder and is obliquely arranged in a direction away from the die core; the sliding block is connected with the lower clamping plate through the sliding block pressing plate;

when the die is closed, the slide block moves downwards along with the slide block pressing plate and the lower clamping plate and moves towards the direction close to the die core under the guiding action of the slide block deflector rod, and finally a film forming cavity is formed with the die core;

when the mold is opened, the slide block moves upwards along with the slide block pressing plate and the lower clamping plate and moves towards the direction far away from the mold core under the guiding action of the slide block deflector rod.

Furthermore, one end of the sliding block, which is close to the film forming cavity, is provided with a protruding part, and the shape of the protruding part is matched with the shape required by film forming.

Furthermore, grooves are respectively and correspondingly formed in the top of the lower die holder and the bottom of the lower clamping plate, a return spring is arranged in each groove, one end of each return spring is fixedly connected with the lower die holder, and the other end of each return spring is fixedly connected with the lower clamping plate; when the die is closed, the return spring is in a compressed state; when the die is opened, the lower clamping plate moves towards the direction far away from the lower die base under the action of the elastic restoring force of the return spring.

Further, still be provided with separation limit screw between lower plate and the die holder, separation limit screw includes screw head, screw rod and polished rod, spacing hole is seted up to the lower plate, spacing hole includes first section hole and second section hole, the aperture in first section hole with the screw head diameter is the same, the aperture in second section hole with the polished rod diameter is the same, the die holder seted up with screw rod assorted screw hole, the screw rod twists in the screw hole, the screw head is arranged in the first section hole in spacing hole, works as the lower plate is to keeping away from during the direction motion of die holder, the screw head is in first section is downthehole to slide, second section hole hinders its continuation slip, thereby the restriction the maximum separation distance of lower plate and die holder.

Furthermore, the slider is T-shaped, the T-shaped slider comprises wing plates and lower limbs, the slider pressing plates are respectively supported at corners where the wing plates are connected with the lower limbs, and the wing plates are connected between the slider pressing plates and the lower clamping plate in a sliding mode.

Furthermore, the sliding block pressing plate is fixedly connected with the lower clamping plate through a sliding block pressing plate locking screw.

Furthermore, the sliding block deflector rod is fixedly connected with the lower die holder through a sliding block deflector rod locking screw.

Furthermore, the bottom of the lower clamping plate is fixedly connected with a slider limiting screw used for limiting the maximum retreating distance of the slider, the top end of the slider limiting screw is screwed into the lower clamping plate, and the bottom end of the slider limiting screw is arranged in the operation groove.

Furthermore, the bottom of the lower clamping plate is also provided with a receding groove, the receding groove is matched with the top of the sliding block driving lever, and the top of the sliding block driving lever is arranged in the receding groove during die assembly; and a back-hoe angle is also arranged at the top of the sliding block driving lever.

Compared with the prior art, the beneficial effects of the utility model are that:

the all-round back-off film forming die adopts a sliding block core pulling mechanism, can realize all-round back-off of the film, and has large back-off amount; after the film is formed by back-off, the slide block can move in the direction far away from the die core along with the die opening action, the convex part at one end of the slide block close to the die core is withdrawn from the position of the film back-off, and the film is not easy to deform when the film is taken out; the action of the slide block core-pulling mechanism on the film back-off molding is finished at one moment along with mold closing and mold opening, and the production efficiency of the film back-off molding is high; the all-round inverted-buckle film forming die is convenient to process and use.

Drawings

Fig. 1 is a schematic structural view of a full-circumference inverted film forming die.

Fig. 2 is a schematic structural view of the upper clamping plate and the lower clamping plate separated when the full-circumference inverted film forming die is opened.

Fig. 3 is a schematic structural view of the lower clamp plate and the lower die holder separated when the full-circumference inverted film forming die opens the die.

FIG. 4 is a schematic structural view of a slider and a slider platen.

In the figure: 1-upper die holder, 2-lower die holder, 3-upper clamping plate, 4-lower clamping plate, 5-operation groove, 6-die core, 7-slide block, 8-slide block deflector rod, 9-slide block press plate, 10-sliding hole, 11-film forming cavity, 12-bulge, 13-groove, 14-reset spring, 15-separation limit screw, 16-screw head, 17-screw rod, 18-polish rod, 19-first section hole, 20-second section hole, 21-slide block locking press plate screw, 22-slide block locking deflector rod screw, 23-die core screw, 24-slide block limit screw, 25-abdicating groove, 26-back-shovel angle, 27-wing plate and 28-lower limb.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In an embodiment of the present invention, please refer to fig. 1, 2, 3, 4, a full-circle back-off film forming mold comprises an upper mold base 1, a lower mold base 2 and a mold core 6, the mold core 6 is fixedly connected with the lower mold base 2 through a mold core locking screw 23, the bottom of the upper mold base 1 is fixedly connected with an upper clamp plate 3, the top of the lower mold base 2 is movably connected with a lower clamp plate 4, and the upper clamp plate 3 is relatively parallel to the lower clamp plate 4; the top of the lower die holder 2 and the bottom of the lower clamping plate 4 are respectively provided with at least four corresponding grooves 13, the grooves 13 are internally provided with a return spring 14, one end of the return spring 14 is fixedly connected with the lower clamping plate 4, and the other end of the return spring is fixedly connected with the lower die holder 2; when the upper die holder 1 drives the upper clamping plate 3 to press down, the lower clamping plate 4 is pressed on the lower die holder 2 by the upper clamping plate 3, and the return spring 14 is in a compressed state; when the upper die holder 1 drives the upper clamping plate 3 to lift, the lower clamping plate 4 moves towards the direction far away from the lower die holder 2 under the action of the elastic restoring force of the return spring 14; an operation groove 5 is formed in the lower clamping plate 4, a sliding block core pulling mechanism is arranged in the operation groove 5, and the sliding block core pulling mechanism comprises a sliding block 7, a sliding block driving lever 8 and a sliding block pressing plate 9; at least four sliding blocks 7 are horizontally arranged, the four sliding blocks 7 are respectively arranged in the front, rear, left and right directions, one ends of the four sliding blocks 7, which point to the middle position of the operation groove 5, are respectively provided with a convex part 12, the shape of the convex part 12 is matched with the shape required by the inverted buckle forming of the film, when the die is closed, the convex parts 12 of the four sliding blocks 7 advance and are enclosed together to form a film forming cavity 11 together with the die core 6, and the complete inverted buckle shape required by the inverted buckle of the whole circumference of the film is formed; the two sides of the sliding block 7 are both provided with sliding block pressing plates 9, the two sides of each sliding block pressing plate 9 are the two sides in the same direction as the advancing and retreating directions of the sliding block 7, the sliding block 7 is arranged to be a T-shaped sliding block, each T-shaped sliding block comprises a wing plate 27 and a lower limb 28, the sliding block pressing plates 9 are respectively supported at the corners where the wing plates 27 are connected with the lower limbs 28, the sliding block pressing plates 9 are fixedly connected with the lower clamping plate 4 through sliding block pressing plate locking screws 21, the wing plates 27 are connected between the sliding block pressing plates 9 and the lower clamping plate 4 in a sliding mode, and the sliding block 7 can move horizontally between the sliding block pressing plates 9 and the lower clamping plate 4; the sliding block deflector rod 8 is fixedly connected with the lower die holder 2 through a sliding block deflector rod locking screw 22, and the sliding block deflector rod 8 inclines towards the direction far away from the die core 6; the sliding block 7 is provided with a sliding hole 10 matched with the sliding block deflector rod 8, and the sliding block deflector rod 8 penetrates through the sliding hole 10; when the die is closed, the slide block 7 moves downwards along with the lower clamping plate 4 and the slide block pressing plate 9, moves towards the direction close to the die core 6 under the guiding action of the slide block deflector rod 8, and finally forms a film forming cavity 11 with the die core 6; when the mold is opened, the slide block 7 moves upwards along with the lower clamping plate 4 and the slide block pressing plate 9 and moves towards the direction far away from the mold core 6 under the guiding action of the slide block deflector rod 8.

In the embodiment, a film is flatly laid on a lower clamping plate 4 and is aligned to an operation groove 5, when the die is closed, an upper die holder 1 drives an upper clamping plate 3 to press down, the upper clamping plate 3 presses the lower clamping plate 4 downwards, the lower clamping plate 4 and a slide block pressing plate 9 drive a slide block 7 to move downwards, so that the slide blocks 7 on the front, back, left and right sides respectively move towards the direction close to a die core 6 under the guiding action of respective slide block deflector rods 8, four convex parts 12 are enclosed, the film passes through a high-temperature softening section and is formed by high-pressure air inlet and suction, the convex parts 12 and the die core 6 together complete the whole-circumference back-off forming of the film, and at the moment, a return spring 14 is in a compression state; when the mold is opened, the upper mold base 1 drives the upper clamp plate 3 to lift, the lower clamp plate 4 moves towards the direction far away from the lower mold base 2 under the action of the elastic restoring force of the reset spring 14, the lower clamp plate 4 and the slide block pressing plate 9 drive the slide block 7 to move upwards, so that the slide blocks 7 on the front, the rear, the left and the right sides move towards the direction far away from the mold core 6 under the guiding action of the respective slide block deflector rods 8, and the protruding parts 12 are withdrawn from the film back-off. The slider core-pulling mechanism finishes the whole-circle back-off molding of the film at one moment along with the mold closing action during mold closing, and exits the film back-off at one moment along with the mold opening action during mold opening, so that the film is not easy to deform during film taking out.

The utility model discloses an embodiment, please refer to fig. 1, 2, 3, still be provided with separation limit screw 15 such as 6 at least equal height between lower plate 4 and the die holder 2, separation limit screw 15 includes screw head 16, screw rod 17 and polished rod 18, lower plate 4 has seted up the spacing hole corresponding with separation limit screw 15, spacing hole includes first section hole 19 and second section hole 20, the aperture of first section hole 19 is the same with screw head 16's diameter, the aperture of second section hole 20 is the same with polished rod 18's diameter, die holder 2 has seted up the screw hole corresponding with separation limit screw 15, the screw hole is corresponding with spacing hole, and with screw rod 17 phase-match, separation limit screw 15's screw rod 17 part is twisted in die holder 2's screw hole, screw head 16 is arranged in first section hole 19, the aperture of first section hole 19 is greater than the aperture of second section hole 20, the length of setting first section hole 19 is 13mm.

In this embodiment, when the upper clamp plate 3 presses the lower clamp plate 4 on the lower die holder 2, the screw head 16 is located at the top of the first section of hole 19, when the die is opened, the lower clamp plate 4 moves in a direction away from the lower die holder 2 under the action of the elastic restoring force of the return spring 14, the screw head 16 slides downwards in the first section of hole 19, and because the diameter of the screw head 16 is greater than the aperture of the second section of hole 20, the second section of hole 20 prevents the screw head 16 from continuing to slide downwards, so that the maximum separation distance between the lower clamp plate 4 and the lower die holder 2 is limited, and the maximum separation distance between the lower clamp plate 4 and the lower die holder 2 is 13mm; separation limit screw 15 provides the guarantee for the relative motion between lower plate 4 and the die holder 2, ensures to remain relative parallel throughout between lower plate 4 and the die holder 2, and lower plate 4 drives slider 7 and accomplishes the shaping of film back-off when making things convenient for the compound die next time smoothly.

In an embodiment of the present invention, referring to fig. 1, 2 and 3, at least 4 slider limiting screws 24 are fixedly connected to the bottom of the lower plate 4, each slider limiting screw 24 is located behind each slider 7, the top end of the slider limiting screw 24 is screwed into the lower plate 4, the bottom end of the slider limiting screw 24 is placed in the operation slot 5, and the distance between the slider limiting screw 24 and the slider 7 is set to be 4mm; the bottom of the lower clamping plate 4 is also provided with a yielding groove 25, the yielding groove 25 is matched with the top of the sliding block deflector rod 8, and when the lower clamping plate 4 is pressed on the lower die holder 2, the top of the sliding block deflector rod 8 is arranged in the yielding groove 25; the top of slider driving lever 8 still is provided with back-hoe angle 26, and back-hoe angle 26 is not more than 5, and slider driving lever 8 is to keeping away from the slope of the direction of mould benevolence 6 to inclination is not more than 25, sets up 0.5 mm's clearance fit between the slide hole 10 of slider 7 and the slider driving lever 8.

In the embodiment, during die assembly, the lower clamping plate 4 and the slide block pressing plate 9 drive the slide block 7 to move downwards, the slide block 7 moves towards the direction close to the die core 6 under the guiding action of the slide block shifting rod 8, the top of the slide block shifting rod 8 finally extends into the abdicating groove 25, lateral pressure can be generated on the slide block 7 during high-pressure air inlet and air suction molding, and the back-shovel angle 26 at the top of the slide block shifting rod 8 can effectively prevent the slide block 7 from moving backwards under the lateral pressure to cause burrs on a film, so that the appearance of the film is not influenced; when the mold is opened, the lower clamping plate 4 and the slide block pressing plate 9 drive the slide block 7 to move upwards, the slide block 7 moves in the direction away from the mold core 6 under the guiding action of the slide block shifting rod 8, the bottom end of the slide block limiting screw 24 limits the maximum retreating distance of the slide block 7, the maximum retreating distance of the slide block 7 is 4mm, and the maximum film back-off amount can reach 6mm; the maximum inclination angle of the sliding block deflector rod 8 is set to be 25 degrees, and 0.5mm clearance fit is arranged between the sliding block deflector rod 8 and the sliding hole 10 of the sliding block 7, so that the sliding block 7 can smoothly move along the sliding block deflector rod 8 through the sliding hole 10, and the sliding block 7 is prevented from being blocked when the mould is opened; after the mold is opened, a part of the slide block deflector rod 8 is still arranged in the slide hole 10 of the slide block 7, so that the slide block 7 can smoothly move towards the direction close to the mold core 6 under the guiding action of the slide block deflector rod 8 when the mold is closed next time.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. A whole-circle back-off film forming die comprises an upper die holder (1), a lower die holder (2) and a die core (6), and is characterized in that the bottom of the upper die holder (1) is fixedly connected with an upper clamping plate (3), and the top of the lower die holder (2) is movably connected with a lower clamping plate (4);

an operation groove (5) is formed in the lower clamping plate (4), and a sliding block core pulling mechanism is arranged in the operation groove (5);

the sliding block core pulling mechanism comprises a sliding block (7), a sliding block driving lever (8) and a sliding block pressing plate (9); the sliding block deflector rod (8) is fixedly connected with the lower die holder (2) and is obliquely arranged in the direction away from the die core; the sliding block (7) is connected with the lower clamping plate (4) through the sliding block pressing plate (9);

when the die is closed, the sliding block (7) moves downwards along with the sliding block pressing plate (9) and the lower clamping plate (4) and moves towards the direction close to the die core (6) under the guiding action of the sliding block shifting rod (8), and finally a film forming cavity (11) is formed with the die core (6);

when the mold is opened, the sliding block (7) moves upwards along with the sliding block pressing plate (9) and the lower clamping plate (4) and moves towards the direction away from the mold core under the guiding action of the sliding block shifting rod (8).

2. A peripheral inverted film forming die according to claim 1, wherein the end of the slide (7) close to the film forming cavity is provided with a convex portion (12), and the shape of the convex portion (12) matches with the shape required by the film forming.

3. The full-circumference inverted buckle film forming die as claimed in claim 1, wherein grooves (13) are respectively and correspondingly formed in the top of the lower die holder (2) and the bottom of the lower clamping plate (4), a return spring (14) is arranged in each groove (13), one end of each return spring (14) is fixedly connected with the lower die holder (2), and the other end of each return spring is fixedly connected with the lower clamping plate (4); when the die is closed, the return spring (14) is in a compressed state; when the die is opened, the lower clamping plate (4) moves towards the direction far away from the lower die base (2) under the action of the elastic restoring force of the return spring (14).

4. The forming die of the full-circumference back-off film as claimed in claim 1, wherein a separation limit screw (15) is further arranged between the lower clamping plate (4) and the lower die holder (2), the separation limit screw (15) comprises a screw head (16), a screw rod (17) and a polish rod (18), the lower clamping plate (4) is provided with a limit hole, the limit hole comprises a first section of hole (19) and a second section of hole (20), the diameter of the first section of hole (19) is the same as that of the screw head (16), the diameter of the second section of hole (20) is the same as that of the polish rod (18), the lower die holder (2) is provided with a screw hole matched with the screw rod (17), the screw rod (17) is screwed into the screw hole, the screw head (16) is arranged in the first section of hole (19) of the limit hole, when the lower clamping plate (4) moves in a direction far away from the lower die holder (2), the screw head (16) slides in the first section of hole, and the second section of hole (20) hinders the lower clamping plate (4) from sliding to limit the maximum distance of the lower die holder (2) to be separated from the lower die holder (2).

5. A mold for forming full-width inverted buckle film according to claim 1, wherein the slide (7) is a T-shaped slide, the T-shaped slide comprises a wing plate (27) and a lower limb (28), the slide pressing plate (9) is respectively supported at the corner where the wing plate (27) and the lower limb (28) are connected, and the wing plate (27) is slidably connected between the slide pressing plate (9) and the lower clamping plate (4).

6. A full-circumference undercut film forming die as claimed in claim 5, wherein the slider press plate (9) is fixedly connected with the lower clamp plate (4) by locking slider press plate screws (21).

7. The full-circumference inverted buckle film forming die as claimed in claim 1, wherein the slider deflector rod (8) is fixedly connected with the lower die holder (2) through a slider-locking deflector rod screw (22).

8. A full-circumference inverted buckle film forming die as claimed in claim 1, wherein a slider limiting screw (24) for limiting the maximum retreating distance of the slider (7) is fixedly connected to the bottom of the lower clamping plate (4), the top end of the slider limiting screw (24) is screwed into the lower clamping plate (4), and the bottom end of the slider limiting screw (24) is placed in the operating slot (5).

9. The full-circumference inverted buckle film forming die as claimed in claim 1, wherein a relief groove (25) is further formed in the bottom of the lower clamping plate (4), the relief groove (25) is matched with the top of the slider shifting rod (8), and when die assembly is carried out, the top of the slider shifting rod (8) is placed in the relief groove (25); the top of the sliding block deflector rod (8) is also provided with a back-hoe angle (26).