CN116494466A

CN116494466A - Automobile bumper light-weight die forming device and process thereof

Info

Publication number: CN116494466A
Application number: CN202310496623.1A
Authority: CN
Inventors: 曹秋法; 陶峰; 杨力
Original assignee: Wuhan Mingjie Mould & Plastic Co ltd
Current assignee: Wuhan Mingjie Mould & Plastic Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-07-28

Abstract

The application discloses a light-weight die forming device of an automobile bumper and a process thereof, and relates to the field of production and manufacture of automobile parts, wherein the forming device comprises an injection molding machine frame, a die, an injection molding mechanism and an electric control module, wherein the die is arranged on the injection molding machine frame, the die comprises a fixed die, a left movable die and a right movable die which are matched with the fixed die, and a cavity for forming an injection molding finished product is formed at one side, close to the left movable die and the right movable die; the surface of the movable mould is uniformly provided with a plurality of groups of water outlet through holes communicated with the cavity, a water supply mechanism and a ventilation air supply mechanism which can alternately operate and are respectively used for supplying water to the water outlet through holes are arranged on the injection molding frame, and the injection molding finished product is lifted off the movable mould through the water pressure at the water outlet through holes. According to the method, a hydraulic ejection/pneumatic ejection mode is utilized to replace an ejection mode in the prior art, water and gas are softer than those of the traditional rigid ejection, and damage risks to an automobile bumper product and a die during demolding are effectively reduced.

Description

Automobile bumper light-weight die forming device and process thereof

Technical Field

The application relates to the field of automobile part production and manufacturing, in particular to an automobile bumper lightweight die forming device and an automobile bumper lightweight die forming process.

Background

The bumper system is an important part of the automobile body, and when the automobile is in serious collision, the impact force is reasonably dispersed to the whole automobile body through the bumper system so as to avoid overlarge deformation of a local area and protect the personal safety of passengers. The structural design of the automobile bumper not only affects the safety of drivers and passengers, but also affects the durability of the product.

Injection molding is a relatively common molding method for automobile bumpers, however, because the automobile bumpers have a relatively large injection molding surface and a relatively large number of inverted injection molding structures. In the prior art, an ejector pin structure is adopted to eject an automobile bumper from a mold, and an ejector device of the automobile bumper mold disclosed in one Chinese patent application with the application publication number of CN105773935A comprises a first inclined ejection mechanism for reversely buckling and demolding the edge of the automobile bumper, a second inclined ejection mechanism for demolding the inclined side wall at a lamp cover panel of the automobile bumper and a lower mold assembly for accommodating the first inclined ejection mechanism and the second inclined ejection mechanism; the lower end of the first inclined ejection mechanism is fixed on a top plate of the die ejection mechanism, and the upper end of the first inclined ejection mechanism is provided with a molded surface for the automobile bumper to reversely buckle at the edge; the lower end of the second inclined ejection mechanism is a free end and is in sliding connection in the lower die assembly, the upper end of the second inclined ejection mechanism is connected with the first inclined ejection mechanism through a linkage mechanism, and the upper end of the second inclined ejection mechanism is provided with a molded surface of an inclined side wall at a panel of an automobile bumper lampshade. The first inclined ejection mechanism and the second inclined ejection mechanism in the ejection device are both composed of inclined ejection and ejector rods (equivalent to ejector rod structures in the existing device), and after injection molding is completed, the ejection device ejects the inclined ejection towards the outer side of the die by utilizing the ejector rods and ejects an injection molded automobile bumper product by utilizing the inclined ejection.

In actual production, because of the design of multiple cambered surfaces and grooves of the automobile bumper product, when the oblique ejection and ejector rod structure/ejector pin structure is adopted to eject the injection molded mold, a large number of oblique ejection and ejector rod structure/ejector pin structure are adopted to eject the automobile bumper product, and the oblique ejection and ejector rod structure/ejector pin structure are required to have stronger actual ejection force to ensure complete ejection of the automobile bumper, and have higher requirements on the surface smoothness of the mold cavity, when the surface of the mold cavity is rough, such as the surface defects of chiseling, scoring, scars, sinking and the like are reserved in the mold cavity and the runner of the mold, the demolding of the automobile bumper is difficult. The demolding structure in the traditional mode has higher processing requirements on the mold, and has larger damage risk to the automobile bumper product in practice, and the situation that the automobile bumper product is adhered with an inclined ejection block/ejector pin structure/mold cavity or the ejector rod structure/ejector pin mechanism has overlarge ejection force to damage the product easily occurs during demolding.

Disclosure of Invention

In order to solve the problem that the product is damaged due to overlarge ejection force of an inclined ejection block/ejector pin structure/die cavity or ejector pin structure/ejector pin mechanism, which is easy to cause when an ejection structure is used for ejecting a die in a traditional mode, the application provides an automobile bumper lightweight die forming device and a process thereof.

The application provides a car bumper lightweight mould forming device adopts following technical scheme:

the automobile bumper light-weight die forming device comprises an injection molding machine frame, a die and an injection molding mechanism which are arranged on the injection molding machine frame, and an electric control module for carrying out integrated control on each electric element on the injection molding machine frame, wherein the die comprises a fixed die and a left movable die and a right movable die which are matched with the fixed die, and a cavity for forming an injection molding finished product is formed on one side, close to the left movable die and the right movable die; the surface of the movable die is uniformly provided with a plurality of groups of water outlet through holes communicated with the die cavity, the injection molding frame is provided with a water supply mechanism for introducing water into the water outlet through holes and a gas supply mechanism for introducing gas into the water outlet through holes, the water supply mechanism and the gas supply mechanism alternately operate, and the injection molding finished product is lifted off the movable die through the water pressure at the water outlet through holes; the injection molding machine is characterized in that a water tank for receiving waste water is further arranged on the injection molding machine frame and below the movable mold, and a blocking mechanism for covering and sealing the water outlet through hole when the injection molding mechanism injects into the cavity is arranged on the movable mold.

By adopting the technical scheme, in the actual production process of the automobile bumper, the plugging mechanism is used for covering and sealing the water outlet through holes on the movable molds, the left movable mold and the right movable mold are closed, the injection mechanism is used for injecting liquid raw materials into the cavity between the two movable molds, and the automobile bumper finished product is formed after cooling; then, an operator can control the fixed die to drive the two movable dies to be away from each other, water and air are sequentially introduced into the dies by utilizing the water supply mechanism and the air supply mechanism in the process that the two movable dies are away from each other, the automobile bumper finished product in the cavity is ejected from the movable die by utilizing the water pressure at the water outlet through hole, waste water remained in the movable die is flushed out by utilizing air pressure when the automobile bumper is separated from the movable die, and the automobile bumper finished product is further flushed out from the movable die by utilizing the air pressure at the same time, so that the automobile bumper finished product is separated from the dies, the automobile bumper is taken down from the dies from one side of the automobile bumper finished product at the same time, and the waste water is received by utilizing the water tank in the process.

The forming device integrally utilizes water pressure and air pressure to replace a push rod structure/a thimble mechanism in the prior art/the traditional technology to push out an automobile bumper finished product from a movable mould, when the water pressure pushes out the automobile bumper finished product, rigid parts such as an inclined top and the like in the push rod structure/the thimble structure are softer, water can flow and be filled between the automobile bumper finished product and the inner side wall of the movable mould at a cavity, and the inner side wall of the movable mould at the cavity is lubricated and buffered, so that the surface damage to the mould cavity and the inside of a runner is protected and reduced; meanwhile, an operator can adjust the actual ejection force of the water supply mechanism on the automobile bumper product by controlling the water pressure so as to ensure that the automobile bumper is completely separated. The problem that products are damaged due to overlarge ejection force of the automobile bumper product adhesion inclined ejector block/ejector pin structure/die cavity or ejector pin structure/ejector pin mechanism, which is easily caused by the demolding structure in the traditional mode, is solved, and the damage risk to the automobile bumper product and the die during demolding is reduced.

Optionally, each group of the water outlet through holes comprises a plurality of single holes distributed in an annular array, and a plurality of groups of the plugging mechanisms are correspondingly arranged in a one-to-one correspondence manner in each group of the water outlet through holes; each group of plugging mechanism comprises a plurality of plugging leaves which are movably covered on a plurality of single holes in any group of water outlet through holes in a one-to-one correspondence manner, a first driving assembly for driving the plurality of plugging leaves to synchronously approach/depart from the single holes, and a jacking assembly for jacking the plugging leaves towards the outer side of the movable mould when the plugging leaves completely cover the corresponding single holes, wherein the plugging She Waibiao surfaces are arranged in a stepped manner, and the outer surfaces of the plugging leaves are suitable for being flush with the surface of the movable mould.

By adopting the technical scheme, the first driving component is utilized to drive the plurality of plugging leaves to synchronously approach and cover the single hole during injection molding, and the jacking component is utilized to jack out the plugging leaves towards the outer side of the movable mould, so that the outer surfaces of the plugging leaves are level with the surface of the movable mould, the flush and non-concave surfaces of the cavity and the runner between the movable moulds are ensured, and the injection molding effect of the automobile bumper can be ensured; correspondingly, when injection molding is finished and ejection of the automobile bumper is required, an operator can take the plugging blade away from the single hole by using the first driving assembly, and accordingly the ejection of the plugging blade by the ejection assembly is cancelled, so that the single hole can be opened, smooth water outlet/air outlet of the single hole is ensured, and ejection of an automobile bumper product is realized.

Optionally, the first driving assembly includes a first driving gear ring rotatably connected in the moving mold and a first driving component for driving the first driving gear to circumferentially rotate around an axis thereof, the plug She Huadong is connected to the outer side of the first driving gear ring, an elastic piece for fixing and pulling the plug leaf and the first driving gear ring is arranged between the plug leaf and the first driving gear ring, and an opening direction of the single hole, a sliding direction of the plug leaf and a stretching direction of the elastic piece are all parallel to the axis of the first driving gear ring; when the first driving gear ring rotates to the rotation end point, the blocking leaves completely cover the corresponding single holes.

Through adopting above-mentioned technical scheme, adopt drive assembly to order about first drive ring gear to rotate, can order about a plurality of shutoff leaves comparatively stably and carry out circumferential motion in step comparatively conveniently to comparatively conveniently realize the regulation control that opens and shuts the haplopore, and keep the shutoff leaf stable after first drive ring gear drives shutoff leaf and rotate to suitable position.

Optionally, the jacking component comprises a plurality of jacking blocks arranged in a plurality of single holes in a one-to-one correspondence manner, a plurality of rotating rods arranged in the middle parts of the jacking blocks in a one-to-one correspondence manner and rotationally connected in the movable mould, and a second driving component for driving the plurality of rotating rods to synchronously rotate; the axial direction of the rotating rod is consistent with the opening direction of the corresponding single hole, and a gap for the plugging leaf to slide in is reserved between the end part of the rotating rod and the plugging leaf; the ejector blocks are coaxially sleeved and are assembled on the corresponding rotating rods in a threaded mode, the ejector blocks are connected to the movable modules in a sliding mode along the axial direction of the rotating rods, and the ejector blocks are in movable butt joint with the plugging leaves.

By adopting the technical scheme, the second driving part is utilized to drive the rotating rod to rotate, so that the ejector block can be driven to linearly move along the axial direction of the rotating rod; and after the ejector block moves to a proper position, the rotating rod stops rotating, and the ejector block does not move any more, so that the blocking leaves can be stably and forcefully propped against the opening of the single hole when the blocking leaves completely cover the single hole, and the blocking leaves can effectively seal and cover the single hole.

Optionally, still offered on every group on the movable mould inner wall in a plurality of single hole outsides in the water outlet hole with the holding arc groove that corresponds single hole and be linked together, holding arc groove opening orientation is parallel with first drive ring gear radial direction, holding arc groove extends towards the movable mould outside by single hole bottom towards single hole opening along first drive ring gear circumferential direction, shutoff leaf is along holding arc groove's extending direction sliding connection in holding arc inslot, just the opening size of holding arc groove is by single hole bottom towards single hole opening constantly reducing.

Through adopting above-mentioned technical scheme, the setting of holding arc groove can carry out effective spacing to the motion track of shutoff leaf for the shutoff leaf can be close to/keep away from corresponding single hole under the drive effect of first drive ring gear and the tensioning effect of elastic component steadily, realizes stabilizing, sealed covering and the open and shut control to corresponding single hole.

Optionally, the ejector block is round platform-shaped, and the cross-sectional area of the ejector block is continuously enlarged from the inside of the movable die to the outside of the movable die along the axial direction of the rotating rod.

Through adopting above-mentioned technical scheme, adjust the distance between kicking block and the single hole opening along bull stick axial direction, can realize the fine setting to water pressure when single hole size keeps unchanged to realize the fine setting of water supply mechanism to the ejection force of car bumper product, further reduce the damage risk of car bumper product when drawing of patterns.

Optionally, one end of the top block away from the plugging blade is movably inserted into the inlet end of the corresponding single hole, and the top block is in clearance fit with the inner wall of the movable mould at the position corresponding to the single hole.

Through adopting above-mentioned technical scheme, in the in-process of moulding plastics, operating personnel still steerable bull stick rotates and makes the kicking block insert the entrance point to the single hole, seals the shutoff to the entrance point of single hole, avoids single hole department to exist leaking/gas leakage condition, ensures the injection molding effect of forming device to car bumper.

Optionally, the water tank is opened upwards, a water cooling mechanism for cooling the waste water and a filtering mechanism for filtering the waste water in the waste water cooling process are further arranged on the outer side of the injection molding frame, and a cooling mechanism for cooling and molding the liquid raw material injected into the cavity is arranged on the movable mold; the water cooling mechanism comprises a water tank with an upward opening, a water pump arranged in the water tank and a dry ice inlet component for introducing dry ice into the water tank, wherein the water tank is communicated with the water tank, and the water outlet end of the water pump is connected with the water inlet end of the cooling mechanism.

By adopting the technical scheme, the water tank can always keep the wastewater flowing out of the single hole on the movable mould in the demoulding process of the automobile bumper and after the demoulding is finished, and the filtering mechanism can effectively filter the wastewater in the process; correspondingly, clean water obtained by filtering can be rapidly cooled in a water tank through dry ice and recycled to a cooling mechanism on the movable die, so that the recycling of waste water is realized; and through controlling the input quantity and the input speed of the dry ice and the length of a transportation channel for recycling the cold water to the cooling mechanism, the temperature of the cooling water recycled to the cooling mechanism can be regulated and controlled, so that the gradual cooling and cooling forming of the automobile bumper are realized, and the deformation of the automobile bumper due to quenching is avoided.

Optionally, the filtering mechanism comprises a filter screen detachably arranged at the water outlet of the water tank and a filter core for adsorbing organic wastes in the wastewater, wherein the filter screen covers the upper part of the filter core and the wastewater sequentially passes through the filter screen and the filter core.

Through adopting above-mentioned technical scheme, filter screen and filter core can effectively realize interception and filtration to solid impurity and organic waste in the waste water to effectively realize the retrieval and utilization of waste water.

The application also provides a light-weight die forming process for the automobile bumper, which comprises the following steps of:

s1: injection molding, namely melting raw materials into a liquid state through high temperature, and injecting the liquid state into a mold through an injection molding mechanism;

s2: cooling to form a finished automobile bumper product;

s3: demolding, namely sequentially introducing water and air into the mold at high speed and high pressure by using a water supply mechanism and an air supply mechanism, separating the finished automobile bumper product from the mold by using water pressure, blowing out the water remained on the movable mold by using air pressure, and collecting the wastewater by using a water tank;

s4: and taking down the finished automobile bumper, closing the die again, and repeating the steps.

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

1. the molding device integrally utilizes water pressure and air pressure to replace a push rod structure/a push rod mechanism in the prior art/the traditional technology to push out an automobile bumper finished product from a movable mold, rigid parts such as an inclined top in the push rod structure/the push rod structure are softer, the inner side wall of the movable mold at a cavity can be lubricated and buffered, the problem that the automobile bumper product is adhered to an inclined top block/the push rod structure/a mold cavity or the push rod structure/the push rod mechanism is damaged due to overlarge ejection force when the demolding structure is demolded in the traditional mode is effectively solved, and the damage risk to the automobile bumper product and the mold is reduced when the demolding is performed;

2. the single hole, the plugging blade, the first driving component and the jacking component are matched, so that whether the water supply mechanism outputs water or air or not and the control and adjustment of the water output/air output and the water pressure/air pressure can be conveniently and stably realized, and the water supply mechanism and the air supply mechanism can effectively jack up and separate the driven die of the automobile bumper product;

3. through basin, water-cooling mechanism and filtering mechanism matched with, can realize the circulation of waste water and to the control of the regulation of the temperature of the cooling water of retrieval and utilization to cooling mechanism department to realize the gradual cooling of car bumper, cooling shaping, avoid car bumper to warp because of the quenching.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of a partial cross-sectional structure of an embodiment of the present application;

FIG. 3 is a schematic view of a part of a sectional structure of a movable mold for illustrating the connection relationship between parts in the movable mold;

fig. 4 is a schematic view showing a partially cut-away structure of the injection molding frame and the sump for illustrating the filtering mechanism in the sump.

Reference numerals: 1. an injection molding machine frame; 2. a mold; 21. a fixed mold; 22. a movable mold; 221. a water outlet through hole; 2211. a single hole; 222. accommodating the arc groove; 3. an injection molding mechanism; 4. a water supply mechanism; 5. a gas supply mechanism; 6. a water tank; 7. a plugging mechanism; 71. plugging leaves; 72. a first drive assembly; 721. a first drive ring gear; 722. a first driving part; 7221. a first driving motor; 7222. a first drive gear; 73. jacking up the assembly; 731. a top block; 732. a rotating rod; 733. a second driving part; 7331. a second drive ring gear; 7332. a second driving motor; 7333. a second drive gear; 74. an elastic member; 8. a water cooling mechanism; 81. a water tank; 82. dry ice is introduced into the assembly; 9. a filtering mechanism; 91. a filter screen; 92. a mounting cylinder; 93. a filter element.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses an automobile bumper lightweight mould forming device.

Referring to fig. 1 and 2, the automobile bumper light-weight mold forming device comprises an injection molding frame 1, a mold 2 and an injection molding mechanism 3 which are arranged on the injection molding frame 1, and an electric control module for carrying out integrated control on each electric element on the injection molding frame 1; the mold 2 comprises a left fixed mold 21 and a right fixed mold 21 which are fixedly arranged on the injection molding frame 1, a left movable mold 22 and a right movable mold 22 which are slidably arranged between the two fixed molds 21 and are matched with the fixed molds 21, the injection molding mechanism 3 is positioned on the outer side of the left fixed mold 21/the right fixed mold 21, when the left movable mold 22 and the right movable mold 22 are matched, a cavity for molding an injection molding finished product (namely an automobile bumper in the application) is formed on one side, which is close to the left movable mold 22, of the left movable mold 22, and a cooling mechanism for cooling and molding liquid raw materials injected into the cavity is also arranged on the left movable mold 22 and the right movable mold 22.

In order to solve the problem that in the conventional mode, when the demolding structure is used for demolding, an automobile bumper product is easily adhered to an inclined ejector block/ejector pin structure/mold 2 cavity or ejector pin structure/ejector pin mechanism ejection force is overlarge to damage the product, referring to fig. 1, and simultaneously combining fig. 2 and 3, a plurality of groups of water outlet through holes 221 communicated with the cavity are uniformly formed on the surface of a movable mold 22, a water supply mechanism 4 for leading water to flow into the water outlet through holes 221 and a gas supply mechanism 5 for leading the gas to flow into the water outlet through holes 221 are arranged on an injection molding frame 1, the water supply mechanism 4 and the gas supply mechanism 5 alternately operate, and an injection molding finished product is ejected from the movable mold 22 through the water pressure at the water outlet through holes 221; the injection molding frame 1 is also provided with a water tank 6 for receiving waste water below the movable mold 22, and the movable mold 22 is provided with a blocking mechanism 7 for covering and sealing the water outlet hole 221 when the injection molding mechanism 3 performs injection molding into the cavity.

Specifically, referring to fig. 2 and 3, the water outlet through holes 221 are formed in a relatively flat position of the surface of the movable mold 22, each group of water outlet through holes 221 includes a plurality of single holes 2211 with circular openings, the specifications of the plurality of single holes 2211 in each group of water outlet through holes 221 are consistent, and the sizes of the single holes 2211 and the depths of the single holes 2211 between different groups of water outlet through holes 221 are different according to the area size of the flat surface of the movable mold 22/the automobile bumper; the outlets of the single holes 2211 are communicated with the cavity, the inlets are positioned in the movable dies 22, one side, far away from the two movable dies 22, of each single hole 2211 is provided with a conveying branch channel for supplying water flow/gas to the single hole 2211, each conveying branch channel is communicated with the corresponding single hole 2211, the conveying branch channels are converged in a conveying main channel, the conveying branch channels and the conveying main channel are uniformly sinuous in the movable dies 22, and one side, far away from the single hole 2211, of the conveying main channel is communicated with the air outlet end of the water supply mechanism 4 and the air outlet end of the air supply mechanism 5 through a three-way interface and a corresponding electromagnetic valve.

The plurality of single holes 2211 in each group of water outlet holes 221 are distributed in an annular array, so that the contact area between water flow/gas at the water outlet holes 221 and the injection molding finished product is enlarged, and the water outlet/gas outlet at the water outlet holes 221 is more uniform.

Referring to fig. 2 and 3, the plugging mechanism 7 is provided with a plurality of groups corresponding to each group of the water outlet through holes 221 one by one, and each group of the plugging mechanism 7 includes a plurality of plugging leaves 71 movably covered on a plurality of single holes 2211 in any group of the water outlet through holes 221 one by one, a first driving assembly 72 for driving the plurality of plugging leaves 71 to be synchronously close to/far from the single holes 2211, and a jacking assembly 73 for jacking the plugging leaves 71 toward the outside of the movable mold 22 when the plugging leaves 71 completely cover the corresponding single holes 2211.

The area of the blocking leaves 71 is larger than that of the single holes 2211, the blocking leaves 71 are distributed in an annular array, the central axis of a circular ring surrounded by the blocking leaves 71 is collinear with the central axis of a circular ring surrounded by the single holes 2211, and the blocking leaves 71 are close to/far from the corresponding single holes 2211 along the circumferential direction corresponding to the circular ring surrounded by the single holes 2211 so as to realize the opening and closing control of the corresponding single holes 2211. The surface of one side of the blocking blade 71, which is close to the cavity of the movable mold 22, is taken as the outer surface of the blocking blade 71, the outer surface of the blocking blade 71 is arranged in a stepped manner, and the thickness of the middle part of the blocking blade 71 is thicker than the thickness of the edge of the blocking blade 71.

A plurality of groups of accommodating grooves and accommodating arc grooves 222 communicated with the corresponding single holes 2211 are also formed in the inner wall of the movable mould 22 at the position of each group of water outlet through holes 221, the accommodating grooves are used for accommodating the plugging leaves 71 in the movable mould 22 when the single holes 2211 are opened, the accommodating grooves are positioned at one side of the single holes 2211 along the movement direction of the plugging leaves 71, and the accommodating grooves are irregular grooves; the receiving arc groove 222 is used for allowing the blocking leaves 71 to move in the single hole 2211 and limiting the movement of the blocking leaves 71 in the process that the blocking leaves 71 are gradually opened/cover-closed the single hole 2211.

Specifically, referring to fig. 2 and 3, the first driving assembly 72 includes a first driving gear ring 721 rotatably connected to the movable mold 22, and a first driving member 722 for driving the first driving gear ring 721 to rotate circumferentially around an axis thereof, wherein the axis of the first driving gear ring 721 passes through a center point of a circular ring surrounded by the plurality of single holes 2211, the saw teeth of the first driving gear ring 721 face inwards, the blocking blade 71 is mounted outside the first driving gear ring 721, and an elastic member 74 for fixing and pulling the blocking blade 71 and the first driving gear ring 721 is disposed between them; the blocking blade 71 rotates along with the first driving toothed ring 721 along the extending direction of the accommodating arc groove 222 and is simultaneously connected to the outer side of the first driving toothed ring 721 in a sliding manner, and the opening direction of the single hole 2211, the sliding direction of the blocking blade 71 on the first driving toothed ring 721 and the expansion direction of the elastic piece 74 are all parallel to the axial direction of the first driving toothed ring 721; when the first driving gear ring 721 rotates to its rotation end point, the blocking leaves 71 completely cover the corresponding single holes 2211.

The first driving part 722 specifically includes a first driving motor 7221 and a first driving gear 7222 disposed inside the first driving gear ring 721, the first driving motor 7221 is fixedly mounted on the movable mold 22, the first driving gear 7222 is fixedly mounted on an output shaft end of the first driving motor 7221, and the first driving gear 7222 is meshed with the inside of the first driving gear ring 721; the first driving motor 7221 is started and the operation of the first driving motor 7221 is controlled, the first driving gear 7222 can be conveniently and stably driven to drive the blocking blade 71 to circumferentially rotate around the center point of the circular ring surrounded by the plurality of single holes 2211, the transmission between the first driving gear 7222 and the first driving gear ring 721 is smaller, and the control operation of the first driving motor 7221 by an operator can be more convenient and accurate.

Accordingly, referring to fig. 2 and 3, the opening of the accommodating arc groove 222 is parallel to the radial direction of the driving gear ring, the accommodating arc groove 222 extends from the bottom of the single hole 2211 to the outside of the movable mold 22 along the circumferential direction of the driving gear ring toward the opening of the single hole 2211, the blocking blade 71 can simultaneously slide from the bottom of the single hole 2211 to the outside of the movable mold 22 along the extending direction of the accommodating arc groove 222 toward the opening of the single hole 2211 in the process of rotating along with the first driving gear ring 721, and the opening size of the accommodating arc groove 222 is continuously reduced from the bottom of the single hole 2211 to the opening of the single hole 2211; the elastic member 74 is preferably a spring in the embodiment of the present application, the elastic member 74 also rotates along with the first driving gear ring 721 during the rotation of the first driving gear ring 721, and the elastic member 74 is continuously stretched and lengthened during the sliding of the blocking blade 71 to the outside of the movable mold 22.

The jack-up assembly 73 includes a plurality of jack-up blocks 731 disposed in the plurality of single holes 2211 in a one-to-one correspondence, a plurality of rotating rods 732 disposed in the middle of the plurality of jack-up blocks 731 in a one-to-one correspondence and rotatably connected to the movable module 22, and a second driving member 733 for driving the plurality of rotating rods 732 to rotate synchronously.

The axial direction of the rotating rod 732 is consistent with the opening direction of the corresponding single hole 2211, a gap for the plugging blade 71 to slide in is reserved between the end part of the rotating rod 732 and the plugging blade 71, and a threaded section for connecting the top block 731 is arranged on the rotating rod 732 in the single hole 2211.

The top piece 731 is in a round table shape, the top piece 731 is coaxially sleeved and in threaded fit with the corresponding rotating rod 732, a limiting block is integrally arranged on the outer wall of one side of the top piece 731, which is far away from the blocking blade 71, in a protruding mode, the top piece 731 is slidably connected to the movable mould 22 through the limiting block, the sliding direction of the top piece 731 in the corresponding single hole 2211 is consistent with the axial direction of the corresponding rotating rod 732, one end of the top piece 731, which is close to the blocking blade 71, is movably abutted to the blocking blade 71, one end of the top piece 731, which is far away from the blocking blade 71, is movably spliced with the inlet end of the corresponding single hole 2211, and the top piece 731 is in clearance fit with the inner wall of the movable mould 22 at the position corresponding single hole 2211; when the top piece 731 is at the sliding start point, the top piece 731 is inserted into the corresponding single hole 2211, and when the top piece 731 is at the sliding end point, the top piece 731 leaves the inlet end of the single hole 2211 and abuts against the corresponding blocking leaf 71.

Referring to fig. 2 and 3, in the process that the plugging blade 71 moves from the rotation starting point to the rotation end point along with the first driving part 722, the second driving part 733 drives the rotating rod 732 to rotate, so that the top block 731 can be correspondingly driven to perform linear motion along the axial direction of the rotating rod 732; the second driving component 733 specifically includes a second driving toothed ring 7331, a second driving motor 7332 and a second driving gear 7333, the second driving toothed ring 7331 is toothed outwards, the number of the second driving gears 7333 corresponding to the number of the rotating rods 732 is multiple, the plurality of second driving gears 7333 are coaxially and fixedly connected to one end of the plurality of rotating rods 732 far away from the plugging blade 71 in a one-to-one correspondence manner, and the plurality of second driving gears 7333 are annularly arranged outside the second driving toothed ring 7331 and are meshed with the second driving toothed ring 7331; the second driving motor 7332 is started to drive the plurality of rotating rods 732 to synchronously rotate and drive the plurality of top blocks 731 to synchronously move towards the plugging leaves 71 to approach/separate, so that the plurality of top blocks 731 correspondingly jack up the plugging leaves 71/plug the inlet ends of the single holes 2211.

The second driving part 733 drives the rotating rod 732 to rotate, so that the top block 731 can be driven to linearly move along the axial direction of the rotating rod 732; and after the top piece 731 moves to a proper position, the rotation of the rotating rod 732 is stopped, and the top piece 731 does not move any more, so that the blocking blade 71 can be stably and forcefully propped against the opening of the single hole 2211 when the blocking blade 71 completely covers the single hole 2211, and the effective sealing coverage of the blocking blade 71 to the single hole 2211 is realized.

When the blocking blade 71 rotates to the rotation end point, the blocking blade 71 completely covers the single hole 2211, the top block 731 can also move to the movement end point position of the top block 731 along with the blocking blade 71, at the moment, the rotation of the rotating rod 732 stops, the top block 731 tightly pushes the blocking blade 71, and the top block 731 does not move any more, so that the blocking blade 71 can be stably and forcefully pushed at the opening of the single hole 2211 when the blocking blade 71 completely covers the single hole 2211, and the effective sealing coverage of the blocking blade 71 to the single hole 2211 is realized; the cross-sectional area of the top block 731 is continuously enlarged from the inside of the movable die 22 to the outside of the movable die 22 along the axial direction of the rotating rod 732, and the distance between the top block 731 and the opening of the single hole 2211 is adjusted along the axial direction of the rotating rod 732, so that fine adjustment of water pressure can be realized when the size of the single hole 2211 is kept unchanged, fine adjustment of the ejection force of the water supply mechanism 4 on an automobile bumper product is realized, and the damage risk of the automobile bumper product during demolding is further reduced.

Further, referring to fig. 1 and 4, a water cooling mechanism 8 for cooling the waste water and a filtering mechanism 9 for filtering the waste water during the waste water cooling process are further arranged on the outer side of the injection molding frame 1.

The water tank 6 is upward in opening, the outlet is positioned at the bottom of the water tank 6, projections of the movable die 22 in the vertical direction are positioned in the water tank 6, and the water tank 6 can always keep the waste water flowing out of the single hole 2211 on the movable die 22 to be received in the demoulding process of the automobile bumper and after the demoulding is finished.

The water cooling mechanism 8 comprises a water tank 81 with an upward opening, a water pump arranged in the water tank 81 and a dry ice inlet component 82 for introducing dry ice into the water tank 81, wherein an outlet of the water tank 6 is communicated with the water tank 81, and a water outlet end of the water pump is connected with a water inlet end of the cooling mechanism.

The filtering mechanism 9 is arranged at the outlet of the water tank 6, and the filtering mechanism 9 specifically comprises a filter screen 91 detachably arranged at the water outlet of the water tank 6 and a filter core 93 for adsorbing organic wastes in wastewater.

Specifically, referring to fig. 4, the installation cylinder 92 is assembled at the opening at the bottom of the water tank 6 by threads, the opening of the installation cylinder 92 faces upwards, fine water filtering holes are formed in the bottom and the side wall of the installation cylinder 92 in a penetrating manner, the filter element 93 is detachably arranged in the installation cylinder 92, the filter element 93 is in clearance fit with the inner side wall of the installation cylinder 92, the filter screen 91 covers the upper portion of the filter element 93, and waste water sequentially passes through the filter screen 91 and the filter element 93.

In the demoulding process of the automobile bumper and after the demoulding is finished, the filtering mechanism 9 can always effectively filter the wastewater generated in the demoulding process, and clean water obtained by filtering can be rapidly cooled in the water tank 81 by dry ice and recycled to the cooling mechanism on the movable mould 22, so that the wastewater can be recycled; and through controlling the input quantity and the input speed of the dry ice and the length of a transportation channel for recycling the cold water to the cooling mechanism, the temperature of the cooling water recycled to the cooling mechanism can be regulated and controlled, so that the gradual cooling and cooling forming of the automobile bumper are realized, and the deformation of the automobile bumper due to quenching is avoided.

The implementation principle of the automobile bumper lightweight die forming device is as follows: in the actual production process of the automobile bumper, the blocking blades 71 are rotated to the rotation end point, a second driving motor 7332 in the blocking mechanism 7 is utilized to drive a rotating rod 732 to drive a top block 731 to tightly prop against the corresponding blocking blades 71, so that the blocking blades 71 correspondingly cover and seal a plurality of groups of water outlet through holes 221 on the movable molds 22, the left movable mold 22 and the right movable mold 22 are clamped, liquid raw materials are injected into a cavity between the two movable molds 22 by utilizing an injection molding mechanism 3, and an automobile bumper finished product is formed after cooling; then, an operator can control the fixed die 21 to drive the two movable dies 22 to be far away from each other, and water and air are sequentially introduced into the die 2 by using the water supply mechanism 4 and the air supply mechanism 5 in the process of the two movable dies 22 being far away from each other, water flow is introduced into the conveying main channel at high speed and high pressure by using the water supply mechanism 4, water is discharged at high speed and high pressure at the water outlet through hole 221, and water pressure at the single hole 2211 pushes the automobile bumper finished product in the cavity away from the movable die 22; after the automobile bumper is separated from the movable die 22, an operator can stop the water flow of the water supply mechanism 4, correspondingly switch to the high-speed and high-pressure air supply of the air supply mechanism 5 into the conveying main channel, flush out waste water remained in the movable die 22 by using air pressure, and further flush out an automobile bumper finished product from the movable die 22 by using air pressure at the same time, so that the automobile bumper finished product is separated from the die 2, and simultaneously, the automobile bumper is taken down from the die 2 from one side of the automobile bumper finished product, and the waste water is received by using the water tank 6 in the process, so that the waste water is recycled all the time. The forming device integrally utilizes water pressure and air pressure to replace a push rod structure/ejector pin mechanism in the prior art/traditional technology to eject an automobile bumper finished product out of the movable mould 22, when the water pressure is ejected away from the automobile bumper finished product, rigid parts such as an inclined ejector pin in the push rod structure/ejector pin structure are softer, water can flow and be filled between the automobile bumper finished product and the inner side wall of the movable mould 22 at a cavity, the inner side wall of the movable mould 22 at the cavity is lubricated and buffered, and the surface damage in the cavity and a runner of the mould 2 is effectively protected and reduced; meanwhile, an operator can adjust the actual ejection force of the water supply mechanism 4 on the automobile bumper product by controlling the water pressure so as to ensure that the automobile bumper is completely separated. The problem that the product is damaged due to overlarge ejection force of the automobile bumper product adhesion inclined ejection block 731/ejector pin structure/die 2 cavity or ejector pin structure/ejector pin mechanism, which is easily caused by the demolding structure in the traditional mode, is solved, and the damage risk to the automobile bumper product and the die 2 during demolding is reduced.

The embodiment of the application also discloses an automobile bumper lightweight mould forming process based on the automobile bumper lightweight mould forming device, which specifically comprises the following steps:

s1: injection molding, in which raw materials are melted into a liquid state at high temperature and injected into a mold 2 through an injection molding mechanism 3;

s2: cooling, namely gradually introducing water flow with the temperature lower than 5-10 ℃ into the movable mould 22 by utilizing a cooling mechanism, so that the movable mould 22 and products in a cavity of the movable mould 22 are gradually cooled, and a finished automobile bumper product is formed;

s3: demolding, namely sequentially introducing water and air into the mold 2 at a high speed and under high pressure by using the water supply mechanism 4 and the air supply mechanism 5, separating the automobile bumper finished product from the mold 2 by using water pressure, blowing out the water remained on the movable mold 22 by using air pressure, further blowing away the bumper finished product, collecting the wastewater by using the water tank 6, and continuously filtering and recycling the wastewater in the process of collecting the wastewater by using the water tank 6;

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides an automobile bumper lightweight mould forming device, includes injection molding frame (1), locates mould (2) and injection molding mechanism (3) on injection molding frame (1) and is used for carrying out integrated control's electric control module to each electric component on injection molding frame (1), its characterized in that: the mold (2) comprises a fixed mold (21) and a left movable mold and a right movable mold (22) which are matched with the fixed mold (21), and a cavity for molding an injection molding finished product is formed at one side of the left movable mold and the right movable mold (22) which are close to each other;

the surface of the movable die (22) is uniformly provided with a plurality of groups of water outlet through holes (221) communicated with the cavity, the injection molding frame (1) is provided with a water supply mechanism (4) for leading water into the water outlet through holes (221) and a gas supply mechanism (5) for leading gas into the water outlet through holes (221), the water supply mechanism (4) and the gas supply mechanism (5) alternately operate, and the injection molding finished product is separated from the movable die (22) through a hydraulic roof at the water outlet through holes (221);

the injection molding machine is characterized in that a water tank (6) for receiving waste water is further arranged on the injection molding machine frame (1) and below the movable mold (22), and a blocking mechanism (7) for covering and sealing the water outlet hole (221) when the injection molding mechanism (3) performs injection molding into the cavity is arranged on the movable mold (22).

2. The automobile bumper lightweight mold molding device as defined in claim 1, wherein: each group of water outlet through holes (221) comprises a plurality of single holes (2211) distributed in an annular array, and a plurality of groups of plugging mechanisms (7) are correspondingly arranged in a one-to-one correspondence manner to each group of water outlet through holes (221);

each plugging mechanism (7) comprises a plurality of plugging leaves (71) which are movably covered on a plurality of single holes (2211) in any group of water outlet through holes (221) in a one-to-one correspondence mode, a first driving assembly (72) for driving the plurality of plugging leaves (71) to synchronously approach/depart from the single holes (2211), and a jacking assembly (73) for jacking the plugging leaves (71) towards the outer side of the movable die (22) when the plugging leaves (71) completely cover the corresponding single holes (2211), wherein the outer surfaces of the plugging leaves (71) are distributed in a step mode, and the outer surfaces of the plugging leaves (71) are suitable for being flush with the surface of the movable die (22).

3. The automobile bumper lightweight mold forming device according to claim 2, characterized in that: the first driving assembly (72) comprises a first driving toothed ring (721) rotatably connected in the movable die (22) and a first driving component (722) for driving the first driving toothed ring (721) to circumferentially rotate around the axis of the first driving toothed ring, the blocking leaves (71) are slidably connected to the outer side of the first driving toothed ring (721), elastic pieces (74) for fixing and pulling the blocking leaves (71) and the first driving toothed ring (721) are arranged between the blocking leaves and the first driving toothed ring (721), and the opening direction of the single hole (2211), the sliding direction of the blocking leaves (71) and the stretching direction of the elastic pieces (74) are all parallel to the axial direction of the first driving toothed ring (721);

when the first driving toothed ring (721) rotates to the rotation end point, the blocking leaves (71) completely cover the corresponding single holes (2211).

4. The automobile bumper lightweight mold molding apparatus according to claim 3, wherein: the jacking assembly (73) comprises a plurality of jacking blocks (731) which are arranged in a plurality of single holes (2211) in a one-to-one correspondence manner, a plurality of rotating rods (732) which are arranged in the middle of the jacking blocks (731) in a one-to-one correspondence manner and are rotationally connected in the movable mould (22), and a second driving part (733) for driving the plurality of rotating rods (732) to synchronously rotate; the axial direction of the rotating rod (732) is consistent with the opening direction of the corresponding single hole (2211), and a gap for the plugging blade (71) to slide in is reserved between the end part of the rotating rod (732) and the plugging blade (71); the jacking blocks (731) are coaxially sleeved and are in threaded fit on the corresponding rotating rods (732), the jacking blocks (731) are axially and slidably connected to the movable mould (22) along the rotating rods (732), and the jacking blocks (731) are movably abutted to the blocking leaves (71).

5. The automobile bumper lightweight mold molding device as defined in claim 4, wherein: each group of the water outlet holes (221) is characterized in that the inner wall of the movable mould (22) at the outer side of a plurality of single holes (2211) is further provided with a containing arc groove (222) communicated with the corresponding single hole (2211), the opening direction of the containing arc groove (222) is parallel to the radial direction of the first driving toothed ring (721), the containing arc groove (222) extends from the bottom of the single hole (2211) to the outer side of the movable mould (22) along the circumferential direction of the first driving toothed ring (721) towards the opening of the single hole (2211), the blocking blade (71) is connected in the containing arc groove (222) in a sliding manner along the extending direction of the containing arc groove (222), and the opening size of the containing arc groove (222) is continuously reduced from the bottom of the single hole (2211) towards the opening of the single hole (2211).

6. The automobile bumper lightweight mold molding device as defined in claim 4, wherein: the top block (731) is in a truncated cone shape, and the cross-sectional area of the top block (731) is continuously enlarged from the inside of the movable die (22) to the outside of the movable die (22) along the axial direction of the rotating rod (732).

7. The automobile bumper lightweight mold molding device as defined in claim 6, wherein: one end of the top block (731) far away from the blocking blade (71) is movably inserted into the inlet end of the corresponding single hole (2211), and the top block (731) is in clearance fit with the inner wall of the movable die (22) at the position corresponding to the single hole (2211).

8. The automobile bumper lightweight mold forming device according to any one of claims 1 to 7, characterized in that: the water tank (6) is provided with an upward opening, a water cooling mechanism (8) for cooling the waste water and a filtering mechanism (9) for filtering the waste water in the waste water cooling process are further arranged on the outer side of the injection molding frame (1), and a cooling mechanism for cooling and molding the liquid raw material injected into the cavity is arranged on the movable mold (22);

the water cooling mechanism (8) comprises a water tank (81) with an upward opening, a water pump arranged in the water tank (81) and a dry ice inlet component (82) for introducing dry ice into the water tank (81), the water tank (6) is communicated with the water tank (81), and the water outlet end of the water pump is connected with the water inlet end of the cooling mechanism.

9. The automobile bumper lightweight mold forming device as defined in claim 8, wherein: the filtering mechanism (9) comprises a filter screen (91) detachably mounted at the water outlet of the water tank (6) and a filter element (93) for adsorbing organic wastes in the wastewater, wherein the filter screen (91) covers the filter element (93) and the wastewater sequentially passes through the filter screen (91) and the filter element (93).

10. An automobile bumper lightweight mould forming process based on the automobile bumper lightweight mould forming device as claimed in any one of claims 1-9, and is characterized by comprising the following steps:

s1: injection molding, namely melting raw materials into a liquid state through high temperature, and injecting the liquid state into a mold (2) through an injection molding mechanism (3);

s2: cooling to form a finished automobile bumper product;

s3: demolding, namely sequentially introducing water and air into the mold (2) at a high speed and under a high pressure by using the water supply mechanism (4) and the air supply mechanism (5), separating the automobile bumper finished product from the mold (2) by using water pressure, blowing out the water remained on the movable mold (22) by using air pressure, and collecting the wastewater by using the water tank (6);