CN118061461B

CN118061461B - Injection mold is used in production of car air cleaner

Info

Publication number: CN118061461B
Application number: CN202410501603.3A
Authority: CN
Inventors: 张祥瑞; 孙井锐; 李志超; 刘长顺
Original assignee: Changchun Automobile Filter Co ltd
Current assignee: Changchun Automobile Filter Co ltd
Priority date: 2024-04-25
Filing date: 2024-04-25
Publication date: 2024-06-28
Anticipated expiration: 2044-04-25
Also published as: CN118061461A

Abstract

The invention provides an injection mold for producing an automobile air filter, which relates to the field of injection molding of shells, and comprises a base, a bracket, a top plate, a hydraulic cylinder, a control slide plate, a positioning slide plate, a movable mold and a fixed mold; the end face of the base is provided with a bracket, the upper ends of the brackets are connected through a top plate, and a hydraulic cylinder is arranged on the top plate; a control slide plate and a positioning slide plate are sequentially arranged between the two brackets in a sliding manner from top to bottom, the top end of the control slide plate is connected with the output end of the hydraulic cylinder, and the positioning slide plate is connected with the control slide plate through a spring slide bar assembly; the movable mould is rotationally arranged in the middle of the positioning slide plate, and the positioning slide plate is positioned on the outer ring of the movable mould and is uniformly provided with a fixing assembly; the fixed die is rotationally arranged on the end face of the base through a positioning rotating shaft, and air exhaust assemblies are uniformly arranged at the bottom of the fixed die. The injection mold can remove air in the mold cavity when the shell is injected, so that the mold cavity is ensured to be filled quickly and uniformly; meanwhile, tight connection and stability of a molding cavity in the injection molding process can be realized.

Description

Injection mold is used in production of car air cleaner

Technical Field

The invention relates to the technical field of injection molding of shells, in particular to an injection mold for producing an automobile air filter.

Background

The air filter is mainly used in the fields of pneumatic machinery, internal combustion machinery and the like and provides clean air for the mechanical equipment, so that the problems of abrasion, damage and the like of the mechanical equipment caused by the fact that the mechanical equipment is sucked into air doped with impurity particles, dust particles and the like during working are prevented, and the normal operation of the mechanical equipment is influenced; the air filter for the automobile is usually arranged at the air inlet end of an engine of the automobile and is used for avoiding abrasion of a piston group, the air cylinder and the like caused by the fact that mixed air of particles, impurities and the like suspended in the air is sucked into the air cylinder, so that normal operation of the engine is affected and aging of the engine is accelerated.

At present, an air filter mainly comprises a filter element and a shell, wherein the filter element is used for filtering gas and is a main component of the air filter, which can prevent particulate impurities from entering a hydraulic cylinder; the shell is an external protection part of the filter element and also has the functions of installation and fixation on an automobile engine, noise reduction and the like. At present, the housing of the air cleaner is mainly formed by injection molding, namely, a completely molten plastic material is injected into a mold cavity at a certain temperature by high pressure, and the plastic material is cooled and solidified to obtain the required housing shape. However, in the existing injection molding equipment, air in a mold cavity cannot be removed in time in the mold closing process, and the mold cavity is easy to be filled with molten plastic materials rapidly due to the action of high pressure in the injection molding process, so that bubbles, holes and the like are generated in the cooling molding process and on a molding shell, and the overall mechanical property and the appearance size of the molding shell are affected; meanwhile, in order to adapt to the corresponding space of the air inlet end of the engine, the shell of the partial air filter is generally designed into a special-shaped structure, a plurality of uneven parts exist in a molding die cavity corresponding to the special-shaped shell, the cooling speed of molten plastic is higher, and uneven plastic filling at the part of the special-shaped structure is caused, so that uneven thickness of the molded shell is caused, and the reject ratio of products is increased; in addition, in the injection molding process, molten plastic is injected into a mold cavity through high pressure, the injection molding pressure is high, the problems of expansion of the mold cavity, separation of a molding mold, splashing of the molten plastic and the like are easily caused, the injection molding fails, the operator is easily damaged, and the production efficiency, the safety and the like of condensed plastic which is difficult to clean and splash can not be ensured.

Disclosure of Invention

Aiming at the problems existing in the prior art, the invention aims to provide an injection mold for producing an automobile air filter, which can effectively remove air in a mold cavity when a shell of the air filter is injected, realize the rapid and uniform filling of molten plastic to the mold cavity and avoid the problems of bubble, hole and the like; meanwhile, the injection mold can also ensure the stability of the mold closing of the molding mold cavity, and avoid the problems of injection failure or plastic splashing and the like caused by high-pressure expansion of the mold cavity during injection molding.

The aim of the invention is achieved by the following technical scheme:

An injection mold for producing an automobile air filter comprises a base, a bracket, a top plate, a hydraulic cylinder, a control slide plate, a positioning slide plate, a movable mold and a fixed mold; the two sides of the end face of the base are respectively provided with a bracket, one ends of the brackets, which are far away from the base, are connected through a top plate, and a hydraulic cylinder is arranged on the top plate; the two brackets are positioned between the lower sides of the top plate and are sequentially provided with a control slide plate and a positioning slide plate in a sliding manner from top to bottom, the top end of the control slide plate is connected with the output end of the hydraulic cylinder, and the positioning slide plate is connected with the control slide plate through uniformly distributed spring slide bar assemblies; the movable mould is rotatably arranged in the middle of the positioning slide plate, and the positioning slide plate is positioned on the outer ring of the movable mould and uniformly provided with fixing components around the central axis of the positioning slide plate; the fixed die is rotationally arranged on the end face of the base through a positioning rotating shaft, the fixed die is correspondingly arranged with the movable die, and the bottom of the fixed die is uniformly provided with air exhaust assemblies around the central axis of the fixed die.

Based on the further optimization of above-mentioned scheme, control slide outer lane and correspond the support and set up first slider, and the location slide outer lane corresponds first slider and sets up the second slider, and vertical spout is seted up to the support correspondence first slider, and first slider and second slider slip joint respectively are in corresponding the vertical spout of side, realize sliding connection between control slide, location slide and the support, rotate spacingly to control slide, location slide simultaneously.

Based on the further optimization of above-mentioned scheme, spring slide bar assembly includes slide bar and first spring, and slide bar evenly distributed is in the bottom surface outer lane of control slide, slide bar top and control slide bottom surface fixed connection promptly, and the one end that the control slide was kept away from to the slide bar runs through the location slide and corresponds outer lane section, and the outer lane that just is located the slide bar between control slide and the location slide sets up first spring (first spring upper and lower extreme respectively with control slide bottom surface, location slide top surface fixed connection and first spring coaxial setting is in corresponding slide bar outer lane).

Based on the further optimization of above-mentioned scheme, coaxial through-hole is offered at the location slide middle part, and the through-hole inner wall rotates and sets up the carousel, and the carousel bottom is fixed to be set up movable mould and the coaxial setting of carousel to realize the relative rotation between location slide and the movable mould.

Based on the further optimization of above-mentioned scheme, set up two feeding through-holes on the movable mould, correspond the feeding through-hole on the carousel respectively and set up the feeding and chew, the feeding is chewed top protrusion carousel up end, and two feeding are chewed the top and are used for connecting outside injection molding device's pay-off end and discharge end respectively.

Based on the further optimization of the scheme, the fixing assembly comprises a translation sliding block, a second spring, an arc-shaped block, a locking mechanism, a first connecting rod and a second connecting rod, wherein horizontal sliding grooves are uniformly formed in the bottom surface of the positioning sliding plate and positioned on the outer ring of the turntable, the translation sliding block is respectively arranged in the horizontal sliding grooves in a sliding manner, and one end, far away from the movable die, of the translation sliding block is connected with the inner wall of the corresponding horizontal sliding groove through the second spring; the translation sliding block is fixedly provided with arc blocks at the lower side of the bottom surface of the positioning sliding plate, a plurality of groups of arc blocks form a complete annular structure, and a locking mechanism is arranged at the bottom surface of the arc blocks close to one side of the movable die; the upper side of the positioning slide plate is coaxially provided with an annular slide plate, the outer ring of the bottom surface of the annular slide plate is respectively provided with a first connecting rod corresponding to the translation slide block, the middle part of the translation slide block is provided with an inclined groove with a triangular longitudinal section, the bottom end of the inclined groove is positioned at one end close to the movable die, and the bottom end of the first connecting rod penetrates through the positioning slide plate (the first connecting rod is in sliding connection with the positioning slide plate section on the upper side of the horizontal slide groove in the vertical direction) and is in sliding connection with the corresponding inclined groove; the inner ring of the bottom surface of the annular slide plate is provided with second connecting rods corresponding to the first connecting rods respectively, the turntable is provided with positioning grooves corresponding to the second connecting rods, and the turntable is clamped in the positioning grooves through the second connecting rods to realize rotation limiting of the turntable and the movable mold.

Based on the further optimization of above-mentioned scheme, annular slide is through setting up the location inserted bar control of cover half utensil terminal surface outer lane its reciprocates, specifically: the positioning inserting rods are uniformly distributed on the outer ring of the end face of the fixed die, the movable die is provided with a first through hole corresponding to the positioning inserting rods, the rotary disc is provided with a second through hole corresponding to the first through hole, the bottom surface of the annular sliding plate is provided with a first arc sliding seat corresponding to the second through hole in a sliding mode, the bottom of the first arc sliding seat is provided with a first clamping groove corresponding to the positioning inserting rods, the positioning inserting rods sequentially penetrate through the first through hole and the second through hole and are clamped in the first clamping groove to achieve that the positioning inserting rods support the annular sliding plate, and the annular sliding plate is driven to move up and down.

Based on the further optimization of the scheme, the locking mechanism comprises a convex positioning seat, a connecting block, a third spring, a rotating handle, a connecting bracket and a positioning pin; the convex positioning seat is arranged on the bottom surface of one side of the arc-shaped block, which is close to the movable die, in a sliding manner, and the convex part of the convex positioning seat is positioned on the side surface of one side, which is far away from the movable die; the middle part of the convex positioning seat is provided with a spring groove, a connecting block is arranged in the spring groove in a sliding way, one end of the connecting block, which is close to the die, is connected with the inner wall of the spring groove through a third spring, and one end of the connecting block, which is far away from the movable die, is rotationally connected with the rotating handle; the outer ring of the rotating handle is rotationally sleeved with the connecting bracket, the upper end and the lower end of one side, close to the movable die, of the connecting bracket are respectively fixedly provided with a positioning pin, and one end, far away from the connecting bracket, of the positioning pin penetrates through the corresponding section of the convex positioning seat respectively; a first fixed groove is formed in the outer wall of the movable mould corresponding to the locating pin on the upper side, and a second fixed groove is formed in the outer wall of the fixed mould corresponding to the locating pin on the lower side; the convex positioning seat bulge outer ring is uniformly provided with a first lug around the axis, the side surface of the rotating handle, which is close to one side of the convex positioning seat, is uniformly provided with a second lug, the second lug corresponds to the first lug, and the second lug and the first lug are distributed in a staggered manner (when the third spring is not in a stretched state).

Based on further optimization of the scheme, the end face of the fixed die and the inner ring of the positioning inserted bar are provided with rubber sealing rings, and the rubber sealing rings and the fixed die share the central axis; the movable mould is provided with an annular clamping groove corresponding to the rubber sealing ring.

Based on the further optimization of the scheme, the air extraction assembly comprises an air extraction cylinder, an air extraction piston, a supporting rod, a sealing plug, a synchronous plate, a fourth spring and an air extraction rod, wherein vent holes are uniformly formed in the outer ring of the bottom surface of a molding die cavity of the fixed die, the air extraction cylinder is fixedly arranged at the lower side of each vent hole, the air extraction cylinder is coaxial with each vent hole, the top end of the air extraction cylinder is communicated with the corresponding vent hole, and the air extraction piston is arranged in the air extraction cylinder in a sliding manner; the support rod is coaxially arranged in the inner cavity of the air extraction cylinder, the upper end of the support rod penetrates through the air extraction piston and the vent hole, a sealing plug is fixedly arranged, the lower end of the support rod is fixedly provided with a synchronous plate, and the synchronous plate is connected with the bottom surface of the inner cavity of the air extraction cylinder through a fourth spring; the bottom end of the air extraction piston and the outer ring of the synchronous plate are uniformly provided with a plurality of extraction rods, one end (namely the bottom end) of each extraction rod, which is far away from the air extraction piston, penetrates through the bottom surface of the air extraction cylinder, and the outer ring of the synchronous plate is in sliding connection with the corresponding side wall of each extraction rod.

Based on the further optimization of above-mentioned scheme, the subassembly of bleeding is through sliding the drive slide control of setting at location pivot outer wall, specifically does: the driving slide plate is arranged on the outer wall of the positioning rotating shaft in a sliding manner, and the end face of the driving slide plate is fixedly connected with the bottom end of the corresponding pumping rod, which is positioned at the outer side of the pumping cylinder; the outer ring of the end face of the driving slide plate is provided with a second arc slide seat corresponding to the slide bar respectively, the end face of the second arc slide seat is provided with a second clamping groove corresponding to the slide bar, and the driving slide plate is pushed to move through the slide bar by being clamped in the corresponding second clamping groove.

Based on the further optimization of the scheme, the sealing plug is of a conical structure with a large upper part and a small lower part, and the upper part of the corresponding vent hole is also of a conical structure with a large upper part and a small lower part.

The following technical effects are achieved:

According to the application, the hydraulic cylinder drives the control slide plate and the positioning slide plate to synchronously move downwards, so that the mold assembly between the movable mold and the fixed mold is realized, and the construction of the injection molding cavity is completed; in the die assembly process, the annular sliding plate is driven to slide upwards through the positioning inserted bar at the upper end of the fixed die, so that the state of the fixed assembly is driven to change (namely, the fixed assembly releases the rotation limit between the turntable and the positioning sliding plate and completes the die assembly locking between the fixed die and the movable die), firstly, the movable die is guaranteed not to rotate before die assembly, the efficient positioning die assembly is convenient, secondly, the problems that in the injection molding process, a die cavity expands, injection failure or molten plastic splashing is caused due to injection molding high pressure are avoided, and thirdly, the movable die can rotate together with the fixed die after die assembly is guaranteed. Meanwhile, the spring sliding rod assembly is used for ensuring that the control sliding plate can move downwards further after die assembly, firstly, the movable die and the fixed die are further driven to be in sealing connection through the interaction force of the springs, secondly, the spring sliding rod assembly which moves downwards further is used for driving the air extraction assembly to move after die assembly, further, air extraction in a molding die cavity is realized, air bubbles or holes after injection molding are avoided due to the fact that a large amount of air exists in the molding die cavity, thirdly, the spring sliding rod assembly is used for removing the driving of the air extraction assembly after injection molding, ejection of the air extraction assembly to a molded shell in the fixed die is realized, and the problem that the molded shell and the fixed die are excessively tightly adhered to be inconvenient to discharge is avoided. In addition, the application ensures the even filling of the molten plastic into the molding cavity after the die assembly and during injection molding by utilizing centrifugal force through synchronous rotation of the fixed die and the movable die, thereby avoiding the problem of uneven thickness of the molding shell.

Drawings

Fig. 1 is a schematic structural diagram of an injection mold according to an embodiment of the invention.

Fig. 2 is a partial enlarged view of a in fig. 1.

Fig. 3 is a partial enlarged view of B in fig. 1.

Fig. 4 is a cross-sectional view taken along the direction C-C of fig. 1.

Fig. 5 is a schematic structural diagram of an injection mold after mold closing in an embodiment of the present invention.

Fig. 6 is a partial enlarged view of D in fig. 5.

Fig. 7 is a partial enlarged view of E in fig. 5.

10, A base; 20. a bracket; 21. a vertical chute; 30. a top plate; 40. a hydraulic cylinder; 50. controlling a sliding plate; 51. a slide bar; 52. a first spring; 60. positioning a sliding plate; 601. a turntable; 602. an annular slide plate; 603. a horizontal chute; 61. a translation slider; 62. a second spring; 63. an arc-shaped block; 641. a convex positioning seat; 6410. a spring groove; 642. a connecting block; 643. a third spring; 644. rotating the handle; 645. a connecting bracket; 646. a positioning pin; 65. a first link; 66. a second link; 70. a movable mold; 701. a feed through; 80. setting a mold; 801. positioning a rotating shaft; 802. positioning the inserted link; 803. driving a slide plate; 804. a vent hole; 805. a rubber seal ring; 81. a suction cylinder; 82. an air extraction piston; 83. a support rod; 84. a sealing plug; 85. a synchronizing plate; 86. a fourth spring; 87. and (5) drawing the rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Example 1:

An injection mold for producing an automobile air filter, as shown in fig. 1, comprises a base 10, a bracket 20, a top plate 30, a hydraulic cylinder 40, a control slide plate 50, a positioning slide plate 60, a movable mold 70 and a fixed mold 80; the two sides of the end surface of the base 10 are respectively provided with the bracket 20, one end (namely the upper end) of the bracket 20 far away from the base 10 is connected through the top plate 30, the top plate 30 is provided with the hydraulic cylinder 40 (the hydraulic cylinder 40 is made of the existing commercial products, and all types of hydraulic cylinders which can be used for providing the telescopic and thus the up-and-down sliding of the driving control slide plate 50 and the positioning slide plate 60 required by the application can be met, and the hydraulic cylinder is selected according to actual conditions); the two brackets 20 are located between the lower sides of the top plate 30 and sequentially slide from top to bottom to provide the control slide 50 and the positioning slide 60 (see fig. 1, that is, the control slide 50 is located on the upper side of the positioning slide 60), specifically: the control slide 50 outer lane and correspond support 20 (i.e. control slide 50 is shown in left and right both sides as shown in fig. 1) and set up first slider, the positioning slide 60 outer lane (i.e. positioning slide 60 is shown in left and right both sides as shown in fig. 1) corresponds first slider and sets up the second slider, support 20 (opposite side) corresponds first slider and sets up vertical spout 21, first slider and second slider sliding joint respectively in corresponding side vertical spout 21 realize the sliding connection between control slide 50, positioning slide 60 and the support 20, rotate spacing to control slide 50, positioning slide 60 simultaneously. The top end of the control slide plate 50 is connected with the output end of the hydraulic cylinder 40, and the positioning slide plate 60 is connected with the control slide plate 50 through uniformly distributed spring slide bar assemblies (the spring slide bar assemblies are generally provided with 3 to 6 groups, as shown in fig. 4, 4 groups of elastic slide bar assemblies are adopted in the embodiment); the spring slide bar assembly comprises a slide bar 51 and a first spring 52, wherein the slide bar 51 is uniformly distributed on the outer ring of the bottom surface of the control slide plate 50, namely, the top end of the slide bar 51 is fixedly connected with the bottom surface of the control slide plate 50, one end of the slide bar 51 far away from the control slide plate 50 (namely, the bottom end of the slide bar 51) penetrates through the corresponding outer ring section of the positioning slide plate 60 (the slide bar 51 is in sliding connection with the positioning slide plate 60), the first spring 52 is arranged between the control slide plate 50 and the positioning slide plate 60 and positioned on the outer ring of the slide bar 51 (namely, the upper end and the lower end of the first spring 52 are respectively fixedly connected with the bottom surface of the control slide plate 50 and the top surface of the positioning slide plate 60, and the first spring 52 is coaxially arranged on the outer ring of the corresponding slide bar 51, as shown in fig. 1).

The movable mold 70 is rotatably disposed in the middle of the positioning slide plate 60, specifically: the middle part of the positioning slide plate 60 is provided with a coaxial through hole (namely, the central axis of the through hole is collinear with the central axis of the positioning slide plate 60), the inner wall of the through hole is rotationally provided with a rotary table 601, the bottom of the rotary table 601 is fixedly provided with a movable die 70, and the movable die 70 and the rotary table 601 are coaxially arranged (namely, the movable die 70 is collinear with the central axis of the positioning slide plate 60), so that the relative rotation between the positioning slide plate 60 and the movable die 70 is realized; two feeding through holes 701 (as shown in fig. 1) are formed in the movable mold 70, feeding nozzles are respectively arranged on the rotary table 601 corresponding to the feeding through holes 701, the top ends of the feeding nozzles protrude out of the upper end face of the rotary table 601, and the top ends of the two feeding nozzles are respectively used for connecting a feeding end and a discharging end of an external injection molding device. the positioning slide plate 60 is positioned on the outer ring of the movable mould 70 and is uniformly provided with fixed components around the central axis thereof; the fixed components comprise a translation sliding block 61, a second spring 62, an arc-shaped block 63, a locking mechanism, a first connecting rod 65 and a second connecting rod 66, a positioning sliding plate 60 is arranged on the bottom surface and is positioned on the outer ring of the turntable 601, horizontal sliding grooves 603 are uniformly formed (the number of the horizontal sliding grooves 603 is consistent with that of the fixed components, generally 3-5 groups, as shown in fig. 4, the number of the horizontal sliding grooves 603 is 4, and the number of the fixed components is 4), the translation sliding block 61 is respectively arranged in the horizontal sliding grooves 603 in a sliding manner, and one end of the translation sliding block 61 far away from the movable mold 70 is connected with the inner wall of the corresponding horizontal sliding groove 603 through the second spring 62 (as shown in fig. 2); the translation sliding block 61 is fixedly provided with arc blocks 63 (the end surfaces of the arc blocks 63 are in sliding connection with the bottom surface of the positioning sliding plate 60), a plurality of groups of arc blocks 63 form a complete annular structure, and a locking mechanism is arranged on the bottom surface of the arc blocks 63 close to one side of the movable die 70; the locking mechanism comprises a convex positioning seat 641, a connecting block 642, a third spring 643, a rotating handle 644, a connecting bracket 645 and a positioning pin 646, as shown in fig. 2, the convex positioning seat 641 is arranged on the bottom surface of one side of the arc-shaped block 63 close to the movable mold 70 in a sliding manner (namely, the bottom surface of the arc-shaped block 63 is provided with an arc-shaped chute, and the end surface of the convex positioning seat 641 is clamped in the corresponding arc-shaped chute in a sliding manner; Meanwhile, since the plurality of arc blocks 63 can form a complete arc structure, a plurality of arc sliding grooves corresponding to the arc blocks 63 can also form a complete annular sliding groove), and the protruding part of the convex positioning seat 641 is positioned on one side surface far away from the movable mold 70 (as shown in fig. 2, namely, the convex positioning seat 641 is fixedly arranged on the right side of the bottom surface of the arc block 63 and the protruding part of the convex positioning seat 641 is arranged on the left side); the middle part of the convex positioning seat 641 (protruding part) is provided with a spring groove 6410, a connecting block 642 is arranged in the spring groove 6410 in a sliding way, one end (namely, the right end shown in fig. 2) of the connecting block 642, which is close to the movable mould 70, is connected with the inner wall of the spring groove 6410 through a third spring 643, and one end (namely, the left end shown in fig. 2) of the connecting block 642, which is far away from the movable mould 70, is rotationally connected with a rotating handle 644; The outer ring of the rotating handle 644 is rotationally sleeved with the connecting bracket 645, and a positioning pin 646 is fixedly arranged at the upper end and the lower end of one side of the connecting bracket 645 close to the movable die 70 (namely, the right side of the connecting bracket 645 shown in fig. 2), and one end of the positioning pin 646 far away from the connecting bracket 645 penetrates through the corresponding section of the convex positioning seat 641 respectively (the positioning pin 646 is in sliding connection with the convex positioning seat 641); the positioning pin 646 on the upper side corresponding to the outer wall of the movable mold 70 is provided with a first fixing groove, the positioning pin 646 on the lower side corresponding to the outer wall of the fixed mold 80 is provided with a second fixing groove (after mold closing, the center distance between the first fixing groove and the second fixing groove on the same side is consistent with the center distance between the two positioning pins 646 on the same convex positioning seat 641, as shown in fig. 6); The convex positioning seat 641 is provided with a first bump on the outer ring of the convex portion and a second bump on the side surface of the rotating handle 644, which is close to the convex positioning seat 641, and the second bump is arranged on the side surface of the rotating handle 644, which is close to the convex positioning seat 641, and the second bump corresponds to the first bump and is distributed in a staggered manner (when the third spring 643 is not in a stretched state, namely, the third spring 643 is in a stretched state, the first bump and the second bump are distributed in a staggered manner, and when the second bump is propped against the corresponding first bump, the third spring 643 is stretched, and the positioning pin 646 is positioned in the convex positioning seat 641).

The upper side of the positioning slide plate 60 is coaxially provided with an annular slide plate 602, the outer ring of the bottom surface of the annular slide plate 602 is respectively provided with a first connecting rod 65 corresponding to the translation slide blocks 61, the middle part of each translation slide block 61 is provided with an inclined groove (shown in fig. 2) with a triangular longitudinal section, the bottom end of each inclined groove is positioned at one end close to the movable mold 70 (namely, the inclined groove is inclined towards one end close to the movable mold 70, as shown in fig. 2), and the bottom end of each first connecting rod 65 penetrates through the positioning slide plate 60 (the first connecting rod 65 is in sliding connection with the positioning slide plate 60 section on the upper side of the horizontal slide groove 603 in the vertical direction) and is in sliding connection with the corresponding inclined groove; the inner ring of the bottom surface of the annular slide plate 602 is provided with second connecting rods 66 corresponding to the first connecting rods 65, the turntable 601 is provided with positioning grooves corresponding to the second connecting rods 66, and the turntable 601 and the movable mould 70 are clamped in the positioning grooves through the second connecting rods 66 to realize rotation limiting (namely, the turntable 601, the movable mould 70 and the positioning slide plate 60 are limited to rotate relatively). The annular slide plate 602 controls its up-and-down movement (the number of the positioning insert rods 802 is set according to actual conditions, generally 3 to 6, and 4 are used in this embodiment) through the positioning insert rods 802 disposed on the outer ring of the end face of the fixed mold 80, specifically: the positioning inserting rods 802 are uniformly distributed on the outer ring of the end face of the fixed die 80 (located in the forming die cavity), the movable die 70 (located in the outer ring of the forming die cavity) is provided with a first through hole corresponding to the positioning inserting rods 802, the rotary table 601 is provided with a second through hole corresponding to the first through hole, the bottom surface of the annular sliding plate 602 is provided with a first arc sliding seat corresponding to the second through hole in a sliding manner (namely, the bottom surface of the annular sliding plate 602 is provided with an annular sliding groove corresponding to the second through hole, the first arc sliding seat is in sliding clamping connection with the annular sliding groove and corresponds to the second through hole), the first arc sliding seat bottom is provided with a first clamping groove corresponding to the positioning inserting rods 802, and the positioning inserting rods 802 are sequentially penetrated through the first through hole, the second through hole and are clamped in the first clamping groove to realize that the positioning inserting rods 802 support the annular sliding plate 602 and drive the annular sliding plate 602 to move up and down.

The fixed die 80 is rotatably arranged on the end face of the base 10 through a positioning rotating shaft 801, the fixed die 80 and the movable die 70 are correspondingly arranged (referring to fig. 1, the lower end of the positioning rotating shaft 801 is rotatably connected with the end face of the base 10, the bottom face of the fixed die 80 is fixedly connected with the end face of the positioning rotating shaft 801, so that the relative rotation between the fixed die 80 and the base 10 is realized), the end face of the fixed die 80 and the inner ring (simultaneously positioned on the outer ring of the forming die cavity) of the positioning inserting rod 802 are provided with rubber sealing rings 805 (shown in fig. 5 and 6), and the rubber sealing rings 805 and the fixed die 80 share the central axis; the movable mold 70 is provided with an annular clamping groove corresponding to the rubber seal ring 805 (as shown in fig. 5 and 6, the sealing of the outer ring of the molding cavity between the fixed mold 80 and the movable mold 70 is realized by clamping the rubber seal ring 805 in the annular clamping groove). The bottom of the die 80 is fixed, and the air extraction components are uniformly arranged around the central axis of the die; as shown in fig. 3, the air extraction assembly comprises an air extraction cylinder 81, an air extraction piston 82, a support rod 83, a sealing plug 84, a synchronizing plate 85, a fourth spring 86 and an air extraction rod 87, wherein a vent hole 804 is uniformly formed in the outer ring of the bottom surface of a molding cavity of the fixed mold 80, the air extraction cylinder 81 is fixedly arranged at the lower side of the vent hole 804, the air extraction cylinder 81 is coaxial with the vent hole 804, the top end of the air extraction cylinder 81 is communicated with the corresponding vent hole 804 (as shown in fig. 3), the air extraction piston 82 is slidably arranged in the air extraction cylinder 81 (namely, the air extraction piston 82 is coaxially arranged with the air extraction cylinder 81, the outer ring of the air extraction piston 82 is in sealing sliding connection with the inner wall of the inner cavity of the air extraction cylinder 81, and the air extraction cylinder 81 and the air extraction piston 82 can be structurally designed according to the prior syringe); the supporting rod 83 is coaxially arranged in the cavity of the air extraction cylinder 81, the upper end of the supporting rod 83 penetrates through the air extraction piston 82 (the supporting rod 83 is in sliding connection with the middle part of the air extraction piston 82) and then is fixedly provided with the sealing plug 84 (as shown in fig. 3, the sealing plug 84 is initially positioned on the upper side of the bottom surface of the molding cavity of the fixed mold 80), the lower end of the supporting rod 83 is fixedly provided with the synchronous plate 85, and the synchronous plate 85 is connected with the bottom surface of the cavity of the air extraction cylinder 81 through the fourth spring 86; the bottom end of the air extraction piston 82 and the outer ring of the synchronization plate 85 are uniformly provided with a plurality of extraction rods 87 (the number of the extraction rods 87 is generally two, three or four), one end (namely the bottom end) of the extraction rod 87, which is far away from the air extraction piston 82, penetrates through the bottom surface of the air extraction cylinder 81, and the outer ring of the synchronization plate 85 is in sliding connection with the corresponding side wall of the extraction rod 87. As shown in fig. 3: the sealing plug 84 has a tapered structure with a large upper part and a small lower part, and the upper part of the corresponding vent hole 804 is also provided with a tapered structure with a large upper part and a small lower part, so that the sealing plug 84 is convenient to be clamped into the corresponding vent hole 804.

The air extraction assembly is controlled by a driving sliding plate 803 arranged on the outer wall of the positioning rotating shaft 801 in a sliding manner, and specifically comprises: the driving sliding plate 803 is arranged on the outer wall of the positioning rotating shaft 801 in a sliding manner, and the end face of the driving sliding plate 803 is fixedly connected with the bottom end of the corresponding drawing rod 87, which is positioned on the outer side of the air suction cylinder 81; the outer ring of the end face of the driving slide 803 is provided with a second arc-shaped slide seat corresponding to the slide rod 51 (namely, the outer ring of the end face of the driving slide 803 is provided with an annular slide groove corresponding to the slide rod 51, the second arc-shaped slide seat is in sliding clamping connection with the annular slide groove and corresponds to the slide rod 51), the end face of the second arc-shaped slide seat is provided with a second clamping groove corresponding to the slide rod 51, and the driving slide 803 is pushed to move by the slide rod 51 through the slide rod 51.

Example 2:

As another preferred embodiment of the scheme of the invention, on the basis of the injection mold described in the embodiment 1, an annular positioning ring is fixedly arranged on the end face of the positioning slide plate 60 and positioned on the outer ring of the annular slide plate 602, the annular positioning ring is coaxially arranged with the annular slide plate 602, the outer ring of the annular slide plate 602 is in sliding connection with the inner wall of the annular positioning ring through uniformly distributed positioning blocks, and the positioning of the annular slide plate 602 is achieved by the arrangement of the annular positioning ring, firstly, a supporting frame for supporting and positioning the annular slide plate 602 is provided, and secondly, a hard limit is provided for the downward movement of the control slide plate 50 relative to the positioning slide plate 60, namely, the minimum distance between the control slide plate 50 and the positioning slide plate 60 is limited.

Example 3:

as another preferred embodiment of the scheme of the invention, on the basis of the injection mold described in the embodiment 1, an annular limiting block is coaxially arranged on the outer ring of the sliding rod 51, which is positioned on the lower side of the bottom surface of the positioning sliding plate 60, and is used for hard limiting the sliding of the sliding rod 51.

Example 4:

As another preferred embodiment of the solution of the present invention, on the basis of the injection mold described in embodiment 1, in order to form a stable support for the driving slide 803, and ensure smooth up-and-down movement of the driving slide 803, a plurality of positioning grooves (at least three positioning grooves are uniformly formed on the end surface of the base 10 around the positioning rotating shaft 801, and are set according to practical situations), support rods are slidably disposed in the positioning grooves, bottoms of the support rods are connected with bottoms of corresponding positioning grooves through fifth springs, annular grooves are formed on bottom surfaces of the driving slide 803 corresponding to the support rods, and tops of the support rods are slidably clamped in the annular grooves.

Example 5:

an injection molding method of an air cleaner housing for an automobile, using the injection mold according to any one of embodiments 1 to 4, comprising:

step one, checking before injection molding, namely checking whether all mechanisms of the equipment are corresponding (manual adjustment is performed if the mechanisms are not corresponding) and whether the molding cavities of the movable mold 70 and the fixed mold 80 have impurities such as scraps, residues and the like (cleaning if the impurities exist);

Step two, starting the hydraulic cylinder 40, so that the hydraulic cylinder pushes the control slide plate 50 and the positioning slide plate 60 to move downwards synchronously, and in the process of moving the control slide plate 50 and the positioning slide plate 60 downwards, the positioning inserting rod 802 is firstly inserted into a first through hole on the corresponding movable die 70 and a second through hole on the turntable 601, so that mutual positioning between the fixed die 80 and the movable die 70 is realized; with the continuous downward movement of the control slide 50 and the positioning slide 60, the positioning insert rod 802 continuously moves upward in the first through hole and the second through hole and abuts against the corresponding first arc-shaped slide seat on the annular slide 602, then the positioning insert rod 802 moves upward against the annular slide 602, and further drives the first connecting rod 65 and the second connecting rod 66 to synchronously move upward, the second connecting rod 66 is separated from the positioning groove, so that the rotation limit between the turntable 601 and the positioning slide 60 is relieved (as shown in fig. 6; the rotation hard limit between the turntable 601 and the positioning slide 60 is set, so as to avoid the relative rotation between the control slide 50 and the positioning slide 60 due to external interference in the synchronous downward movement process of the control slide 50 and the positioning slide 60, and further cause the problems that the positioning insert rod 802 cannot be accurately inserted into the first through hole and the second through hole, the molding cavity between the movable mold 70 and the fixed mold 80 cannot be completely matched, and the like), the first connecting rod 65 drives the translation slide 61 to move towards one side close to the movable mold 70, the second spring 62 stretches, and the translation slide 61 drives the arc-shaped block 63 and the locking mechanism to move towards one side close to the movable mold 70; after the movable mold 70 and the fixed mold 80 are closed, the positioning pins 646 of the locking mechanism are respectively locked in the first fixing groove on the corresponding side of the movable mold 70 and the second fixing groove on the corresponding side of the fixed mold 80, so that the locking of the movable mold 70 and the fixed mold 80 is realized, and the rubber sealing ring 805 completes the sealing of the molding cavity (as shown in fig. 6), thereby forming the molding cavity.

Step three, the hydraulic cylinder 40 is continuously started to push the control slide plate 50 to continuously move downwards, at this time, the sliding rod 51 moves downwards, the first spring 52 is compressed, and the bottom end of the sliding rod 51 is clamped in the corresponding second arc-shaped sliding seat because the fixed die 80 supports the movable die 70 and the positioning slide plate 60 does not move downwards along with the control slide plate 50; with the continuous downward movement of the control slide plate 50, the slide rod 51 pushes against the driving slide plate 803 to move downward, so that the belt pulls the corresponding air extraction piston 82 to move downward through the air extraction rod 87, and the air extraction piston 82 extracts air from the molding die cavity (initially, the feed nozzle is in a closed state, and control can be realized by arranging an electromagnetic valve at the feed nozzle); when the air extracting piston 82 moves down to the position of the synchronizing plate 85, the air extracting piston 82 drives the synchronizing plate 85 to move down together with the fourth spring 86 to compress, and the synchronizing plate 85 pulls the sealing plug 84 to seal the vent 804 through the supporting rod 83 to avoid air backflow (as shown in fig. 7); after that, the stop hydraulic cylinder 40 is started and the compression amount of the control slide plate 50 by the hydraulic cylinder 40 is maintained.

Step four, the whole injection mold started by the step two and the step three is shown in fig. 5; then, the feeding end and the discharging end of the external injection molding device are respectively communicated with the two feeding nozzles (can be communicated in advance), then, the electromagnetic valve at the feeding nozzle is opened, the external injection molding device is synchronously opened, and injection molding is carried out in the molding cavity (because the molding cavity is pumped out of air and is in a low-pressure state at the moment, molten plastic introduced by the external injection molding device can rapidly fill the molding cavity); in the injection molding process, the positioning rotating shaft 801 is synchronously started to rotate, so that the positioning rotating shaft drives the fixed die 80 and the movable die 70 to rotate, and further molten plastics uniformly fill the molding die cavity through a rotating centrifugal force.

Step five, firstly, the rotating handle 644 is pulled to drive the connecting bracket 645 and the positioning pin 646 to move towards one end far away from the movable mold 70, so that the positioning pin 646 is separated from the corresponding first fixing groove or second fixing groove (the third spring 643 is in a stretched state); then, by rotating the relative rotation between the handle 644 and the male positioning seat 641 such that the second projection corresponds to the first projection (i.e., the first projection abuts against the second projection), the stretched state of the third spring 643 is maintained (i.e., the state in which the end of the positioning pin 646 away from the connection bracket 645 is positioned in the male positioning seat 641) and the lock between the movable mold 70 and the fixed mold 80 is released; then, the hydraulic cylinder 40 starts the control slide plate 50 to move upwards, so as to drive the movable die 70, the air extraction assembly, the fixed assembly, the spring slide bar assembly and the like to reset, and in the process, the sealing plug 84 moves upwards to eject the formed shell in the fixed die 80 and finish discharging; finally, the whole formed shell is unloaded on an injection mold;

And step six, grinding the unloaded molded shell by adopting conventional machining equipment (such as a conventional lathe, a grinding machine and the like) to obtain the air filter shell.

Claims

1. An injection mold for producing an automobile air filter, which is characterized in that: the device comprises a base (10), a bracket (20), a top plate (30), a hydraulic cylinder (40), a control slide plate (50), a positioning slide plate (60), a movable die (70) and a fixed die (80); the two sides of the end face of the base (10) are respectively provided with a bracket (20), one ends of the brackets (20) far away from the base (10) are connected through a top plate (30), and a hydraulic cylinder (40) is arranged on the top plate (30); the two brackets (20) are positioned between the lower sides of the top plate (30) and are sequentially provided with a control slide plate (50) and a positioning slide plate (60) in a sliding manner from top to bottom, the top end of the control slide plate (50) is connected with the output end of the hydraulic cylinder (40), and the positioning slide plate (60) is connected with the control slide plate (50) through uniformly distributed spring slide bar assemblies; the movable die (70) is rotatably arranged in the middle of the positioning slide plate (60), and the positioning slide plate (60) is positioned on the outer ring of the movable die (70) and uniformly provided with fixing components around the central axis of the positioning slide plate; the fixed die (80) is rotatably arranged on the end face of the base (10) through a positioning rotating shaft (801), the fixed die (80) is arranged corresponding to the movable die (70), and air exhaust assemblies are uniformly arranged at the bottom of the fixed die (80) and around the central axis of the fixed die;

The spring sliding rod assembly comprises a sliding rod (51) and a first spring (52), wherein the sliding rod (51) is uniformly distributed on the outer ring of the bottom surface of the control sliding plate (50), namely the top end of the sliding rod (51) is fixedly connected with the bottom surface of the control sliding plate (50), one end, far away from the control sliding plate (50), of the sliding rod (51) penetrates through the corresponding outer ring section of the positioning sliding plate (60), and the first spring (52) is arranged between the control sliding plate (50) and the positioning sliding plate (60) and positioned on the outer ring of the sliding rod (51);

a coaxial through hole is formed in the middle of the positioning sliding plate (60), a rotary table (601) is rotatably arranged on the inner wall of the through hole, a movable die (70) is fixedly arranged at the bottom of the rotary table (601), and the movable die (70) and the rotary table (601) are coaxially arranged;

The fixing assembly comprises a translation sliding block (61), a second spring (62), an arc-shaped block (63), a locking mechanism, a first connecting rod (65) and a second connecting rod (66), wherein horizontal sliding grooves (603) are uniformly formed in the bottom surface of the positioning sliding plate (60) and positioned on the outer ring of the turntable (601), the translation sliding block (61) is respectively arranged in the horizontal sliding grooves (603) in a sliding manner, and one end, far away from the movable die (70), of the translation sliding block (61) is connected with the inner wall of the corresponding horizontal sliding groove (603) through the second spring (62); the translation sliding block (61) is positioned at the lower side of the bottom surface of the positioning sliding plate (60) and is fixedly provided with an arc block (63), a plurality of groups of arc blocks (63) form a complete annular structure, and the bottom surface of the arc block (63) close to one side of the movable die (70) is provided with a locking mechanism; An annular sliding plate (602) is coaxially arranged on the upper side of the positioning sliding plate (60), a first connecting rod (65) is arranged on the outer ring of the bottom surface of the annular sliding plate (602) corresponding to the translation sliding blocks (61) respectively, an inclined groove with a triangular longitudinal section is formed in the middle of each translation sliding block (61), the bottom end of each inclined groove is positioned at one end close to the movable die (70), and the bottom end of each first connecting rod (65) penetrates through the positioning sliding plate (60) and is in sliding connection with the corresponding inclined groove; the inner ring of the bottom surface of the annular sliding plate (602) is provided with second connecting rods (66) corresponding to the first connecting rods (65), and the turntable (601) is provided with positioning grooves corresponding to the second connecting rods (66); the annular slide plate (602) controls the annular slide plate to move up and down through a positioning inserted link (802) arranged on the outer ring of the end face of the fixed die (80), and specifically comprises: the positioning inserting rods (802) are uniformly distributed on the outer ring of the end face of the fixed die (80), a first through hole is formed in the movable die (70) corresponding to the positioning inserting rods (802), a second through hole is formed in the rotary table (601) corresponding to the first through hole, a first arc-shaped sliding seat is arranged on the bottom surface of the annular sliding plate (602) in a sliding manner corresponding to the second through hole, and a first clamping groove is formed in the bottom of the first arc-shaped sliding seat corresponding to the positioning inserting rods (802); The locking mechanism comprises a convex positioning seat (641), a connecting block (642), a third spring (643), a rotary handle (644), a connecting bracket (645) and a positioning pin (646); the convex positioning seat (641) is arranged on the bottom surface of one side of the arc-shaped block (63) close to the movable die (70) in a sliding manner, and the convex part of the convex positioning seat (641) is positioned on the side surface of one side far away from the movable die (70); a spring groove (6410) is formed in the middle of the convex positioning seat (641), a connecting block (642) is arranged in the spring groove (6410) in a sliding mode, one end, close to the die (70), of the connecting block (642) is connected with the inner wall of the spring groove (6410) through a third spring (643), and one end, far away from the movable die (70), of the connecting block (642) is connected with a rotating handle (644) in a rotating mode; The outer ring of the rotary handle (644) is rotationally sleeved with the connecting bracket (645), the upper end and the lower end of one side, close to the movable die (70), of the connecting bracket (645) are respectively fixedly provided with a positioning pin (646), and one end, far away from the connecting bracket (645), of the positioning pin (646) penetrates through a corresponding section of the convex positioning seat (641) respectively; a first fixed groove is formed in the outer wall of the movable mould (70) corresponding to the locating pin (646) on the upper side, and a second fixed groove is formed in the outer wall of the fixed mould (80) corresponding to the locating pin (646) on the lower side; the outer ring of the convex part of the convex positioning seat (641) is uniformly provided with a first lug around the axis, and the side surface of the rotating handle (644) close to one side of the convex positioning seat (641) is uniformly provided with a second lug which corresponds to the first lug and is distributed in a dislocation way.

2. The injection mold for producing an air cleaner for automobiles according to claim 1, wherein: the control slide (50) outer lane and correspond support (20) and set up first slider, and positioning slide (60) outer lane corresponds first slider and sets up the second slider, and vertical spout (21) are seted up to support (20) corresponding first slider, and first slider and second slider sliding joint are in corresponding side vertical spout (21) respectively.

3. The injection mold for producing an air cleaner for automobiles according to claim 1, wherein: two feeding through holes (701) are formed in the movable die (70), feeding nozzles are arranged on the rotary table (601) corresponding to the feeding through holes (701) respectively, and the top ends of the feeding nozzles protrude out of the upper end face of the rotary table (601).

4. The injection mold for producing an air cleaner for automobiles according to claim 1, wherein: the air extraction assembly comprises an air extraction cylinder (81), an air extraction piston (82), a supporting rod (83), a sealing plug (84), a synchronous plate (85), a fourth spring (86) and an extraction rod (87), wherein an air vent (804) is uniformly formed in the outer ring of the bottom surface of a molding cavity of a fixed mold (80), the air extraction cylinder (81) is fixedly arranged at the lower side of the air vent (804), the air extraction cylinder (81) is coaxial with the air vent (804), the top end of the air extraction cylinder (81) is communicated with the corresponding air vent (804), and the air extraction piston (82) is arranged in the air extraction cylinder (81) in a sliding manner; the support rod (83) is coaxially arranged in the inner cavity of the air suction cylinder (81), a sealing plug (84) is fixedly arranged after the upper end of the support rod (83) penetrates through the air suction piston (82) and the air vent (804), a synchronous plate (85) is fixedly arranged at the lower end of the support rod (83), and the synchronous plate (85) is connected with the bottom surface of the inner cavity of the air suction cylinder (81) through a fourth spring (86); the bottom end of the air extraction piston (82) and the outer ring of the synchronous plate (85) are uniformly provided with a plurality of extraction rods (87), one end of each extraction rod (87) far away from the air extraction piston (82) penetrates through the bottom surface of the air extraction cylinder (81), and the outer ring of the synchronous plate (85) is in sliding connection with the corresponding side wall of each extraction rod (87).

5. The injection mold for producing an air cleaner for automobiles according to claim 4, wherein: the air extraction assembly is controlled by a driving sliding plate (803) arranged on the outer wall of the positioning rotating shaft (801) in a sliding manner, and specifically comprises: the driving slide plate (803) is arranged on the outer wall of the positioning rotating shaft (801) in a sliding manner, and the end face of the driving slide plate (803) is fixedly connected with the bottom end of the corresponding drawing rod (87) positioned on the outer side of the drawing cylinder (81); the outer ring of the end face of the driving sliding plate (803) is provided with a second arc sliding seat corresponding to the sliding rod (51), and the end face of the second arc sliding seat is provided with a second clamping groove corresponding to the sliding rod (51).