CN115091700A

CN115091700A - Unilateral rotation takes off material injection mold

Info

Publication number: CN115091700A
Application number: CN202210799380.4A
Authority: CN
Inventors: 沈伟倩
Original assignee: Shanghai Donglei Precision Mould Technology Co ltd
Current assignee: Shanghai Donglei Precision Mould Technology Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-09-23

Abstract

The application discloses a single-side rotary stripping injection mold, which relates to the field of injection molding and comprises a movable mold fixing plate, a fixed mold fixing plate and a top plate, wherein the top plate is provided with a thimble for ejecting, the movable mold fixing plate is provided with a first molding part and a second molding part which are provided with molding cavities, the fixed mold fixing plate is provided with a third molding part and a fourth molding part which are provided with molding cavities, the third molding part and the fourth molding part are both rotatably arranged on the fixed mold fixing plate and rotate relatively independently, one side of the top plate, which is far away from the movable mold fixing plate, is provided with a lifting assembly for lifting the top plate, the single-side rotary stripping injection mold synchronously realizes the stripping of a worm rod part and a helical gear part on a special-shaped injection molding part and the lifting of the top plate to the thimble through the rotation of the third molding part and the fourth molding part and the lifting of the top plate, and reduces the probability of the defect caused by the collision of the special-shaped injection molding part and the mold in the demolding process, the defect of liquid leakage or burr in the forming process is prevented, and the method has the characteristics of high forming precision and high product qualification rate.

Description

Unilateral rotation stripping injection mold

Technical Field

The application relates to the field of injection molding, in particular to a unilateral rotation stripping injection mold.

Background

The mold injection molding is a processing method used for batch production of parts with complex shapes, and the specific principle is as follows: the plastic raw material which is heated and melted is pushed into a die cavity of a plastic die by a screw of an injection molding machine under high pressure, and a plastic forming product is obtained after cooling and solidification.

In the related art, as shown in fig. 1, a special-shaped injection molding part is provided, which includes a bevel gear part 10 and a worm part 20 that are integrally formed, a first groove 101 is formed in a middle portion of one side of the bevel gear part 10, which is away from the worm part 20, six second grooves 102 are formed in an array manner on an outer side of the bevel gear part, which is located on the first groove, and a protrusion 30 is formed on one side of the worm part 20, which is away from the bevel gear part, in the related art, when the special-shaped injection molding part is formed, a plurality of female molds and male molds are usually designed and spliced along a circular surface, during stripping, a mode that a plurality of female molds and male molds are driven by using a specific mechanism to be away from the formed special-shaped injection molding part is adopted, and then the special-shaped injection molding part is ejected out, and the mold design mode is adopted for forming, so that a gap is easily generated at a splicing position of the female molds and the male molds, and molten plastic flows out through the gap, or burrs and other defects are formed, the defects of low forming precision and high product reject ratio are caused, and the method has a part to be improved.

Disclosure of Invention

In order to improve the qualification rate when special-shaped injection molding, this application provides a material injection mold is taken off in unilateral rotation.

The application provides a material injection mold is taken off in unilateral rotation adopts following technical scheme:

a single-side rotating stripping injection mold comprises a movable mold fixing plate and a fixed mold fixing plate, wherein a top plate is arranged on one side, away from the movable mold fixing plate, of the fixed mold fixing plate in a lifting mode, an ejector pin is vertically arranged on the top plate, a first forming portion used for forming a first groove and a second forming portion used for forming a second groove are arranged on the movable mold fixing plate, a third forming portion used for forming a bevel gear portion and a fourth forming portion used for forming a worm rod portion and a protrusion are arranged on the fixed mold fixing plate, the tip end of the ejector pin and one side, away from the movable mold fixing plate, of the fourth forming portion are in inserted connection, a first bearing is arranged on the outer side of each of the third forming portion and the fourth forming portion, a first stripping gear is arranged on the fourth forming portion, a second stripping gear is arranged between the fixed mold fixing plate and the top plate in a rotating mode, the second stripping gear is meshed with the first stripping gear, the demolding mechanism is characterized in that a demolding oil cylinder is horizontally arranged on the outer side of the fixed die fixing plate, a demolding rack is arranged on a piston rod of the demolding oil cylinder, the demolding rack is meshed with a second demolding gear, a lifting assembly used for lifting the top plate is further arranged on one side, away from the movable die fixing plate, of the top plate, and the first molding portion, the second molding portion, the third molding portion and the fourth molding portion are stacked and assembled along the mold opening direction.

By adopting the technical scheme, the first forming part, the second forming part, the third forming part and the fourth forming part which are assembled in a stacking mode along the die opening direction can reduce the probability of burr or liquid leakage of the special-shaped injection molding part during molding as much as possible, in the process of molding the special-shaped injection molding part after die assembly, after molten plastic is injected into a die cavity from an ejection gate, the molten plastic is gradually solidified and molded under the cooling action of cooling water in a cooling water channel, when the die is opened and the injection part is taken out, a lifting assembly drives a top plate and pushes the special-shaped injection molding part to move towards the direction that a movable die fixing plate is far away from a fixed die fixing plate, then a second demolding gear drives a first demolding gear to rotate under the driving of a demolding rack to unscrew a worm part, at the moment, because the third forming part and the fourth forming part rotate independently, the third forming part also rotates along the inclined direction of an inclined gear part, so as to finish material removal, and the material removal mode is used, can carry out the self-adaptation along the appearance of dysmorphism injection molding and take off the material, reduce among the drawing of patterns process dysmorphism injection molding and four shaping portions bump and produce the probability of defect, also can be simultaneously at the leakproofness of the high die cavity of shaping prerequisite, prevent that weeping or unedged defect from appearing in the forming process, the two homoenergetic improves the shaping precision and the qualification rate of this dysmorphism injection molding.

Preferably, the lifting subassembly includes pulley and lifting board, the lifting board includes integrated into one piece's flat portion of slowing and the portion of raising, flat portion of slowing all is the slope setting with the one side of raising the portion and being close to the pulley, just the inclination of flat portion of slowing is less than the inclination of the portion of raising, the fixed push pedal that is provided with on the piston rod of drawing of patterns hydro-cylinder, the drawing of patterns rack is fixed to be set up in the push pedal, just be on a parallel with the drawing of patterns rack in the push pedal and be provided with the push rod, it is fixed to set up on the push rod to lift the board.

Through adopting above-mentioned technical scheme, the setting of pulley and lifting board has specifically realized the lifting mode of lifting subassembly to the roof, and when drawing of patterns hydro-cylinder's piston rod extended, drawing of patterns and the operation of liftout are done in step to drawing of patterns rack and lifting board, can improve the speed of the drawing of patterns and the efficiency of the drawing of patterns.

Preferably, the number of the pulleys is two, the number of the lifting plates is two, and the two pulleys are respectively arranged at two ends of the top plate in the length direction of the push rod.

Through adopting above-mentioned technical scheme, all set up the pulley and lift the board and carry out the lifting for two in the both sides of roof, prevent because the roof atress is inhomogeneous, the condition of card on guide pillar or guide pin bushing takes place at the lifting in-process.

Preferably, a plurality of steel balls are arranged between the third forming part and the fourth forming part.

Through adopting above-mentioned technical scheme, because the rotation of third shaping portion and fourth shaping portion is relatively independent, set up the steel ball between the two and can reduce the friction that the two produced when rotating, reduce the wearing and tearing of third shaping portion and fourth shaping portion, improve the life of the two.

Preferably, a first gasket is provided between the first bearing fixed to the outer side of the third molding part and the first bearing fixed to the outer side of the fourth molding part, the first gasket abuts against outer rings of the two first bearings, and an inner diameter of the first gasket is larger than inner diameters of inner rings of the two first bearings.

Through adopting above-mentioned technical scheme, the setting of first packing ring can support the outer lane of two first bearings, prevents that first bearing is not hard up to drop, simultaneously because only supporting the outer lane of first bearing, when can preventing that first bearing from rotating, the inner circle of two first bearings produces the friction with first packing ring and wearing and tearing appear to the support through first packing ring plays the effect that prolongs two first bearing life.

Preferably, one side that fourth shaping portion is close to the roof is rotated and is provided with the fifth shaping portion that is used for the special-shaped injection molding of auxiliary molding, first drawing of patterns gear and fifth shaping portion key-type connection, just the fifth shaping portion passes through the bolt with fourth shaping portion and realizes dismantling the connection, the fifth shaping portion outside is provided with the second packing ring that is used for reducing frictional force.

Through adopting above-mentioned technical scheme, fifth shaping portion can play supplementary fourth shaping portion pivoted effect, and the processing of fifth shaping portion is convenient, has removed from the processing degree of difficulty that fourth shaping portion damaged back need make worm portion internal thread again, and convenient to detach maintains, and the second packing ring also can reduce the wearing and tearing that fifth shaping portion produced at the rotation in-process simultaneously, further prolongs the life of fifth shaping portion.

Preferably, a reset rod is inserted between the second forming portion and the third forming portion, a reset hole is formed in one side, close to the third forming portion, of the second forming portion, and the inner wall on one side of the reset hole is obliquely arranged.

Through adopting above-mentioned technical scheme, after the drawing of patterns flow is accomplished, the third shaping portion can drive the release link and appear the segment skew along the incline direction of helical gear portion, and when the compound die, the release link can take place to contact with the reset bore and drive the third shaping portion and return to initial position, is favorable to improving the machining precision to improve the qualification rate of this dysmorphism injection molding.

Preferably, the push pedal outside is provided with the leading truck, the leading truck is improved level and is provided with the guide bar, the guide bar wears to establish the push pedal setting.

Through adopting above-mentioned technical scheme, the setting of leading truck and guide bar can prevent that the condition emergence of unable alignment hole site appears owing to not having guiding mechanism when the piston rod of drawing of patterns hydro-cylinder is stretched out and drawn back, prevents that push rod and drawing of patterns rack and mould from taking place the butt collision and appearing crooked condition.

Preferably, a mould hanging frame is arranged on the outer side of the movable mould fixing plate.

Through adopting above-mentioned technical scheme, the setting of hanging the die carrier can be with the whole hoisting of mould to be convenient for transport mechanism with its transport to in the factory building or other places that need this mould.

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

1. by utilizing the first forming part, the second forming part, the third forming part and the fourth forming part which are longitudinally stacked and assembled, on one hand, the probability of side burrs or liquid leakage of the special-shaped injection molding part during forming can be reduced as much as possible, and on the other hand, the probability of defects caused by collision between the special-shaped injection molding part and the four forming parts in the demolding process can be prevented, so that the forming precision and the qualification rate of the special-shaped injection molding part are improved;

2. by means of the arrangement of the pulley, the lifting plate and the demoulding rack, the synchronous operation of ejector pin ejection and worm screw-out can be realized by means of the pushing of the demoulding oil cylinder and the push plate during demoulding, so that the demoulding speed and the demoulding efficiency are improved;

3. through the setting of release link and reset bore, can make the third shaping portion return to initial position again at the in-process of accomplishing the drawing of patterns and getting the piece back compound die again, further improved the shaping precision of special-shaped injection molding, reduce the defective rate of product.

Drawings

FIG. 1 is an axial view of the overall structure of a profile injection molded part in the related art;

FIG. 2 is a schematic axial view of a single-sided rotational stripping injection mold according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present application showing the internal structure of a mold, wherein some of the extraneous features are hidden;

FIG. 4 is a schematic view of a second stripping gear and a stripping rack according to an embodiment of the present application;

FIG. 5 is a first schematic view of an embodiment of the present application, which mainly shows a stacking assembly manner of a first molding portion, a second molding portion, a third molding portion, a fourth molding portion and a fifth molding portion;

fig. 6 is a second schematic view mainly showing a stacking assembly manner of the first molding portion, the second molding portion, the third molding portion, the fourth molding portion and the fifth molding portion in the embodiment of the present application.

Reference numerals are as follows: 1. a movable mold fixing plate; 11. a first molding section; 12. a second molding section; 121. a reset hole; 2. fixing a die fixing plate; 21. a third molding section; 211. a reset lever; 22. a fourth molding section; 23. a fifth molding section; 231. a first stripper gear; 232. a second gasket; 24. a second stripper gear; 25. steel balls; 26. a first gasket; 3. a top plate; 31. a thimble; 4. a first bearing; 5. a second bearing; 6. a demoulding oil cylinder; 61. pushing a plate; 611. demolding the rack; 7. a lifting assembly; 71. a pulley; 72. lifting the plate; 721. a smoothing part; 722. a raised portion; 73. a push rod; 8. a guide frame; 81. a guide rod; 9. and (5) hoisting a mould frame.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a unilateral rotation takes off material injection mold.

Referring to fig. 2 and 3, a single-side rotation stripping injection mold comprises a movable mold fixing plate 1, a fixed mold fixing plate 2 and a top plate 3, wherein a first molding part 11 for molding a first groove and a second molding part 12 for molding a second groove are arranged on the movable mold fixing plate 1, a third molding part 21 for molding a bevel gear part and a fourth molding part 22 for molding a worm rod part and a protrusion are arranged on the fixed mold fixing plate 2, a fifth molding part 23 for assisting in molding a special-shaped injection molding is further arranged on a side of the fourth molding part 22 away from the third molding part 21, the first molding part 11, the second molding part 12, the third molding part 21, the fourth molding part 22 and the fifth molding part 23 are stacked and assembled along a mold opening direction, the first molding part 11 is inserted into the second molding part 12, the fourth molding part 22 and the fifth molding part 23 are detachably connected by bolts, an ejector pin 31 is arranged on the top plate 3, the tip end of the thimble 31 penetrates through the fifth forming part 23 and forms a plug fit with one side of the fourth forming part 22 far away from the movable mould fixing plate 1, so as to play a role in auxiliary forming of the protrusion;

referring to fig. 3 and 4, the first bearings 4 are respectively arranged on the outer sides of the third forming part 21 and the fourth forming part 22, the second bearings 5 are arranged on the outer sides of the fifth forming part 23, sliding motion between the three forming parts and the fixed die fixing plate 2 or the movable die fixing plate 1 can be converted into rolling motion, friction coefficient reduction and abrasion reduction are facilitated, the two first bearings 4 are both plane bearings and are used for bearing axial load generated during die assembly, damage caused by the fact that the bearings are difficult to bear the axial load during die assembly is prevented, continuity of die assembly is affected, the inner rings of the first bearings 4 are fixedly connected with the third forming part 21 and the fourth forming part 22 through interference or key, the outer rings of the two first bearings 4 are fixedly connected with the fixed die fixing plate 2 through interference or key, and the third forming part 21 and the fourth forming part 22 can be ensured to synchronously rotate through the arrangement of the two first bearings 4, the second bearing 5 is a ball bearing, and can play an auxiliary role in the rotation of the fifth molding part 23, a first demolding gear 231 is arranged outside the fifth molding part 23, a second demolding gear 24 meshed with the first demolding gear 231 is arranged on the fixed mold fixing plate 2, a demolding oil cylinder 6 is horizontally arranged outside the fixed mold fixing plate 2, a push plate 61 is fixedly arranged on a piston rod of the demolding oil cylinder 6, a demolding rack 611 is arranged on one side, away from the demolding oil cylinder 6, of the push plate 61, the demolding rack 611 is meshed with the second demolding gear 24, during demolding, the piston rod of the demolding oil cylinder 6 extends to drive the fifth molding part 23 to rotate under the lubrication of the second bearing 5, and the worm part of the special-shaped injection molding part can be removed through rotation and the jacking of the ejector pin 31.

Referring to fig. 2 and 3, a lifting assembly 7 for lifting the top plate 3 is arranged on one side of the top plate 3 away from the movable die fixing plate 1, the lifting assembly 7 comprises a pulley 71 and a lifting plate 72, two pulleys 71 and two lifting plates 72 are arranged, because the two pulleys 71 and the mounting plate are arranged in the same way and structure, the lifting assembly is described by taking one set of the lifting plate 72 and the pulley 71 as an example, the pulley 71 is rotatably arranged on one side of the top plate 3 away from the fixed die fixing plate 2, the rotation axis of the pulley 71 is horizontally arranged and perpendicular to the piston rod of the oil cylinder, a push rod 73 is arranged on one side of the push plate 61 close to the pulley 71, the lifting plate 72 is fixedly arranged on the push rod 73, the lifting plate 72 comprises a flat part 721 and a lifting part 722 which are integrally formed, the flat part 721 and the lifting part 722 can be abutted against the pulley 71 under the pushing of the push plate 61, the flat part 721 and the lifting part 722 are obliquely arranged on the side abutted against the pulley 71, the inclination angle of the gentle portion 721 is smaller than that of the raised portion 722, the inclination angle of the gentle portion 721 is 8 degrees, the inclination angle of the raised portion 722 is 20 degrees, the connection part of the gentle portion 721 and the raised portion 722 is in a smooth round-off arrangement, because the mold opening stroke is fixed, the lifting plate 72 lifts the thimble 31 too much or too little, which can cause the material jamming of the special-shaped injection molding part, making it difficult to remove, in this embodiment, the lifting plate 72 provides a lifting stroke for the thimble 31, namely, the height difference between the highest point and the lowest point of the uplift part 722 is 5mm, the lifting mode of the top plate 3 in the mould is realized, when the piston rod of the demoulding oil cylinder 6 extends, the demoulding rack 611 and the lifting plate 72 synchronously perform demoulding and material ejection actions, so that the demoulding speed and the demoulding efficiency are improved, and the two groups of pulleys 71 are respectively arranged at the two ends of the top plate 3 in the length direction of the push rod 73.

Referring to fig. 5 and 6, a plurality of steel balls 25 are arranged between the third forming part 21 and the fourth forming part 22, and the arrangement of the steel balls 25 can reduce friction generated when the third forming part 21 and the fourth forming part 22 rotate independently, reduce abrasion between the third forming part 21 and the fourth forming part 22, and improve service lives of the third forming part 21 and the fourth forming part 22; a first gasket 26 is arranged between the first bearing 4 outside the third forming part 21 and the first bearing 4 outside the fourth forming part 22, the outer diameter of the first gasket 26 is the same as that of the outer ring of the first bearing 4, and the inner diameter of the first gasket 26 is larger than that of the inner ring of the first bearing 4, the first gasket 26 can play a supporting role, the two first bearings 4 are prevented from being collided and abutted to influence the independent rotation of the two first bearings 4, the first bearings 4 can be prevented from loosening and falling off, and meanwhile, the inner rings of the two first bearings 4 and the first gasket 26 can be prevented from being rubbed or worn, so that the service lives of the two first bearings 4 are prolonged; the second washer 232 is disposed outside the fifth forming portion 23, and also has the function of reducing friction force, and meanwhile, the wear of the fifth forming portion 23 generated in the rotating process can be reduced, so that the service life of the fifth forming portion 23 is further prolonged.

Referring to fig. 5 and 6, a reset rod 211 is inserted between the second forming portion 12 and the third forming portion 21, a reset hole 121 is opened on one side of the second forming portion 12 close to the third forming portion 21, the reset hole 121 is a waist-shaped hole, and one end of the waist-shaped hole in the length direction is inclined and faces the other end of the reset hole 121 in the length direction, when the mold is closed again after the demolding process is completed, the third forming portion 21 can drive the reset rod 211 to deviate along the inclined direction of the inclined gear portion, in order to eliminate the deviation, the reset rod 211 and the reset hole 121 are arranged to be capable of guiding the reset rod 211 to the inclined plane inside the waist-shaped hole when the mold is closed, the third forming portion 21 is driven to return to the initial position and be fixed, and the yield of the special-shaped injection molding piece is improved.

Referring to fig. 2 and 3, a guide frame 8 is arranged on the outer side of the push plate 61, the demolding oil cylinder 6 is fixedly mounted on the guide frame 8, a guide rod 81 is horizontally arranged on the guide frame 8, the guide rod 81 penetrates through the push plate 61 and forms sliding fit with the push plate 61, when the push plate 61 is moved without a guide mechanism for guiding, the situation that the demolding rack 611 or the push rod 73 cannot be aligned with a hole position may occur, the arrangement of the guide frame 8 and the guide rod 81 can prevent the situation that the push rod 73 and the demolding rack 611 are bent due to the fact that the push rod 73 and the demolding rack 611 cannot be aligned with the hole position and the push rod and the mold shell are abutted and collided, and a mold hanging frame 9 is further arranged on the outer side of the movable mold fixing plate 1 and can lift the mold integrally, so that transportation is facilitated.

The implementation principle of the unilateral rotation stripping injection mold is as follows: when a mold is required to be opened and a part is taken out, a piston rod of the demolding oil cylinder 6 extends, the push plate 61 pushes the demolding rack 611 and the push rod 73 to extend inwards to the mold, the demolding rack 611 drives the second demolding gear 24 to rotate, the first demolding gear 231 is driven to rotate along with the rotation of the second demolding gear 24, a worm part of a special-shaped injection molding part is screwed out, meanwhile, the push rod 73 drives the lifting plate 72 to be close to the pulley 71, the pulley 71 is upwards forced to lift the top plate 3 and the ejector pin 31, the special-shaped injection molding part is ejected, the third molding part 21 realizes the material removal of the bevel gear part under the independent rotation of the first bearing 4, at the moment, the material removal process is completed, and when the mold is closed after the material removal is completed, the reset rod 211 drives the third molding part 21 to rotate to the initial position under the limiting effect of the reset hole 121, and the mold closing is completed.

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 rotatory material injection mold that takes off of unilateral which characterized in that: the die comprises a movable die fixing plate (1) and a fixed die fixing plate (2), a top plate (3) is arranged on one side, far away from the movable die fixing plate (1), of the fixed die fixing plate (2) in a lifting mode, an ejector pin (31) is vertically arranged on the top plate (3), a first forming portion (11) used for forming a first groove and a second forming portion (12) used for forming a second groove are arranged on the movable die fixing plate (1), a third forming portion (21) used for forming an inclined gear portion and a fourth forming portion (22) used for forming a worm gear portion and a protrusion are arranged on the fixed die fixing plate (2), the tip end of the ejector pin (31) and one side, far away from the movable die fixing plate (1), of the fourth forming portion (22) are in inserting fit, first bearings (4) are arranged on the outer sides of the third forming portion (21) and the fourth forming portion (22), a first demolding gear (231) is arranged on the fourth forming portion (22), rotate between cover half fixed plate (2) and roof (3) and be provided with second drawing of patterns gear (24), second drawing of patterns gear (24) and first drawing of patterns gear (231) meshing, cover half fixed plate (2) outside level is provided with drawing of patterns hydro-cylinder (6), be provided with drawing of patterns rack (611) on the piston rod of drawing of patterns hydro-cylinder (6), drawing of patterns rack (611) and second drawing of patterns gear (24) meshing, one side that movable mould fixed plate (1) was kept away from in roof (3) still is provided with lifting subassembly (7) that are used for lifting roof (3), first shaping portion (11), second shaping portion (12), third shaping portion (21) and fourth shaping portion (22) four stack the equipment along the die sinking direction.

2. The single-sided rotary stripping injection mold according to claim 1, characterized in that: the lifting assembly (7) comprises a pulley (71) and a lifting plate (72), the lifting plate (72) comprises a flat buffering part (721) and a lifting part (722) which are integrally formed, one side of the flat buffering part (721) and one side of the lifting part (722) close to the pulley (71) are obliquely arranged, the oblique angle of the flat buffering part (721) is smaller than that of the lifting part (722), a push plate (61) is fixedly arranged on a piston rod of the demolding oil cylinder (6), a demolding rack (611) is fixedly arranged on the push plate (61), a push rod (73) is arranged on the push plate (61) in a manner of being parallel to the demolding rack (611), and the lifting plate (72) is fixedly arranged on the push rod (73).

3. The single-sided rotary stripping injection mold according to claim 2, characterized in that: the number of the pulleys (71) is two, the number of the lifting plates (72) is two, and the two pulleys (71) are respectively arranged at two ends of the top plate (3) in the length direction of the push rod (73).

4. The single-sided rotary stripping injection mold according to claim 1, characterized in that: a plurality of steel balls (25) are arranged between the third forming part (21) and the fourth forming part (22).

5. The single-sided rotary stripping injection mold according to claim 1, characterized in that: a first gasket (26) is arranged between the first bearing (4) fixed on the outer side of the third forming part (21) and the first bearing (4) fixed on the outer side of the fourth forming part (22), the first gasket (26) is abutted to the outer rings of the two first bearings (4), and the inner diameter of the first gasket (26) is larger than the inner diameters of the inner rings of the two first bearings (4).

6. The single-sided rotary stripper injection mold of claim 5, wherein: one side that fourth shaping portion (22) is close to roof (3) is rotated and is provided with fifth shaping portion (23) that is used for the special-shaped injection molding of supplementary shaping, first drawing of patterns gear (231) and fifth shaping portion (23) key-type connection, just fifth shaping portion (23) and fourth shaping portion (22) realize dismantling through the bolt and be connected, fifth shaping portion (23) outside is provided with second packing ring (232) that is used for reducing frictional force.

7. The single-sided rotary stripping injection mold according to claim 6, wherein: the utility model discloses a reset device, including first shaping portion (12), second shaping portion (21), reset hole (121) have been seted up to one side that second shaping portion (12) are close to third shaping portion (21), the inner wall of reset hole (121) one side is the slope setting between second shaping portion (12) and third shaping portion (21).

8. The single-sided rotary stripping injection mold according to claim 1, characterized in that: the push pedal (61) outside is provided with leading truck (8), leading truck (8) are improved level and are provided with guide bar (81), guide bar (81) wear to establish push pedal (61) setting.

9. The single-sided rotary stripper injection mold of claim 8, wherein: and a mould hanging frame (9) is arranged on the outer side of the movable mould fixing plate (1).