Injection molded bumper retrieval fixture

Abstract

The application belongs to the technical field of clamp equipment, and particularly relates to a clamp for taking injection bumper, which comprises an extension frame and a vacuum chuck arranged on the extension frame, and further comprises an anti-fouling maintenance mechanism. In the long-term use of the clamp for taking, the movement of the piston in the reinforced pump pipe can increase the negative pressure intensity, thereby enhancing the adsorption stability of the vacuum chuck to the bumper. On the other hand, the air flow discharged between the vacuum chuck and the bumper can reduce the influence of the particulate impurities on the adsorption effect, thereby further enhancing the adsorption effect of the vacuum chuck. Meanwhile, under the impact of the air flow, the probability of the adhesion of impurities on the vacuum chuck can be reduced, and the air flow can be used for cleaning when the impurities are adhered to the vacuum chuck, thereby reducing the damage of the dirt and impurities to the vacuum chuck and prolonging the service life of the vacuum chuck.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of clamp equipment, in particular to a kind of injection bumper taking clamp. BACKGROUND

[0002] Injection molding is a common plastic processing technology, due to the injection molding process has the characteristics of high production efficiency, high forming precision, can realize complex shape, very suitable for large-scale production of automobile bumper and other large plastic parts.

[0003] In the injection production field, especially in the manufacturing process of automobile bumper, the traditional demolding taking method mainly relies on manual operation.However, manual demolding has many drawbacks: low efficiency, high labor intensity, easy to cause product damage or deformation due to improper operation, and high temperature mold also brings certain safety hazards to operators. Therefore, automatic demolding taking of bumper injection is not only the development trend of modern injection molding production, but also an important means to improve the production efficiency, product quality and competitiveness of enterprises.

[0004] In order to realize the automatic demolding taking of bumper, the related technology usually cooperates with the taking clamp by using automatic control program, in actual application, the clamp directly contacts with the bumper after injection molding, and clamps the injection bumper, therefore the selection of clamp not only relates to the stability of bumper transportation, but also affects the safety of bumper taking, such as a kind of injection bumper taking clamp is disclosed in the related technology, the application number is CN2016101105847, the scheme is made of vacuum chuck, the drawing and taking part, the drawing part can quickly and effectively pull out the bumper from the buckle on both sides of the mold, then through the taking part and the drawing part, the injection bumper can be quickly and completely taken off from the injection mold.

[0005] However, after the scheme is actually applied to injection production line, although the existence of taking clamp increases the convenience degree of bumper injection part taking, it is found that after a period of use, since there is high temperature on the surface of bumper injection part during demolding taking process, and there is also additive precipitation and oil stain, which makes the vacuum chuck easy to stick impurities and dirt during use, and further affects the connection stability of vacuum chuck, at the same time, when oil stain and the like adhere to the vacuum chuck, it will also cause corrosion, penetration and other reasons, which makes the vacuum chuck easy to be damaged and the service life of taking clamp is short.

[0006] In view of this, the present application provides an injection bumper taking clamp to solve the above technical problems. SUMMARY

[0007] In order to make up for the shortcomings of the prior art and solve the above technical problems, the present application provides an injection bumper taking clamp.

[0008] The technical scheme adopted by the present application to solve its technical problems is: the injection bumper taking clamp comprises an extension frame and a vacuum chuck arranged on the extension frame.

[0009] Further comprising a dirt-proof maintenance mechanism mounted on the extension frame, the dirt-proof maintenance mechanism is used for dirt-proof and maintenance treatment of the vacuum chuck.

[0010] The dirt-proof maintenance mechanism comprises:

[0011] A reinforcing pump pipe is fixedly installed on the extension frame and is in conductive connection with the middle part of the vacuum chuck.

[0012] An electric push rod is fixedly installed on the extension frame and extends into the reinforcing pump pipe, and the electric push rod is slidably and sealingly installed in the reinforcing pump pipe with a piston.

[0013] A gasket ring and a supporting spring are fixedly installed at the junction of the reinforcing pump pipe and the vacuum chuck, and the supporting spring is installed on the gasket ring.

[0014] A pressure boosting and drainage plug is elastically connected with the gasket ring through the supporting spring, the pressure boosting and drainage plug has a T-shaped structure, extends into the vacuum chuck, and is used for boosting and draining the exhaust gas of the reinforcing pump pipe and then spraying on the vacuum chuck.

[0015] Preferably, the pressure boosting and drainage plug is composed of a plug body and a rotating ring, a rotating groove is formed in the plug body, the rotating ring is rotatably and sealingly installed in the rotating groove, a pressure boosting flow channel is formed in the plug body and connects the inner cavity of the reinforcing pump pipe with the rotating groove in a conductive manner, and a spraying hole is formed in the rotating ring and is used for spraying gas flow.

[0016] Preferably, the spraying hole comprises at least a straight spraying hole and an inclined spraying hole, the straight spraying hole extends radially along the vacuum chuck, and the inclined spraying hole extends tangentially along the rotating groove.

[0017] Preferably, a filter ring is fixedly installed on the inner side of the gasket ring and is in sliding connection with the pressure boosting and drainage plug.

[0018] Preferably, the dirt-proof maintenance mechanism further comprises a film-hanging assembly used for coating a liquid film on the surface of the vacuum chuck.

[0019] The film-hanging assembly comprises a rotating core, a film-hanging piece, and a liquid pipe.

[0020] A through groove is formed in the center of the pressure boosting and drainage plug, the rotating core is rotatably installed in the through groove, and the rotating core is fixedly connected with the rotating ring.

[0021] The membrane-hanging sheet is an elastic metal sheet wrapped with a sponge sheet, the membrane-hanging sheet is installed on the rotating core, and the membrane-hanging sheet extends to the vacuum chuck;

[0022] The rotating core is provided with a liquid pipe for conveying the membrane-hanging liquid to the membrane-hanging sheet.

[0023] Preferably, the rotating core is provided with an L-shaped slot, the membrane-hanging sheet is slidingly installed in the L-shaped slot, and the liquid pipe is in communication connection with the L-shaped slot.

[0024] The rotating core is provided with a transmission slot, symmetrically arranged conveying rollers are rotatably installed in the transmission slot, and the membrane-hanging sheet extends between the two conveying rollers.

[0025] One side of the conveying roller is fixedly provided with a coil spring, and the other side is fixedly provided with an elastic belt, the coil spring is fixedly connected with the rotating core, and the elastic belt extends and is fixed on the piston.

[0026] Preferably, the rotating core is provided with a flow guide slot, one end of the liquid pipe is rotatably installed in the flow guide slot, the flow guide slot is in communication connection with the L-shaped slot, a flow resistance ball is rotatably and sealingly installed at the opening of the flow guide slot, the surface of the flow resistance ball is provided with uniformly distributed grooves, and the flow resistance ball is in frictional contact with the membrane-hanging sheet.

[0027] Preferably, the flow resistance ball is rotatably connected with the flow guide slot through a one-way bearing.

[0028] Preferably, the bottom end of the L-shaped slot is fixedly provided with a tapered plug, the tapered plug is made of elastic rubber material, the membrane-hanging sheet penetrates through the tapered plug, and the small opening end of the tapered plug faces the vacuum chuck.

[0029] Preferably, the rotating core is provided with a control cavity, a control rod is elastically installed in the control cavity through an abutting spring, the control cavity is in communication connection with the flow guide slot, a diaphragm is fixedly installed in the control cavity, the diaphragm is located on the movement path of the control rod, and the control rod blocks the flow guide slot by pushing the diaphragm.

[0030] The beneficial effects of the present application are as follows:

[0031] 1. The injection molding bumper taking clamp provided by the present application, by setting the dirt-proof maintenance mechanism, in the long-term use process of the taking clamp, through the movement of the piston in the enhanced pump pipe, on the one hand, through the way of increasing the negative pressure intensity, the adsorption stability of the vacuum chuck to the bumper is enhanced, on the other hand, through the way of discharging the airflow between the vacuum chuck and the bumper, the influence of the particulate impurities on the adsorption effect is reduced, the adsorption effect of the vacuum chuck is further enhanced, at the same time, under the impact of the airflow, the probability of the adhesion of the impurities on the vacuum chuck is reduced, and after the adhesion of the impurities on the vacuum chuck, the airflow is used for cleaning, thereby reducing the damage of the dirt and impurities to the vacuum chuck, and prolonging the service life of the vacuum chuck.

[0032] 2. The injection molding bumper taking clamp provided by the present application, by setting the dirt-proof maintenance mechanism, in the long-term use process of the taking clamp, through the movement of the piston in the enhanced pump pipe, on the one hand, through the way of increasing the negative pressure intensity, the adsorption stability of the vacuum chuck to the bumper is enhanced, on the other hand, through the way of discharging the airflow between the vacuum chuck and the bumper, the influence of the particulate impurities on the adsorption effect is reduced, the adsorption effect of the vacuum chuck is further enhanced, at the same time, under the impact of the airflow, the probability of the adhesion of the impurities on the vacuum chuck is reduced, and after the adhesion of the impurities on the vacuum chuck, the airflow is used for cleaning, thereby reducing the damage of the dirt and impurities to the vacuum chuck, and prolonging the service life of the vacuum chuck. BRIEF DESCRIPTION OF DRAWINGS

[0033] The present application will be further described below in combination with the drawings.

[0034] Figure 1 is the overall perspective view of the present application;

[0035] Figure 2 is the assembly perspective view of the dirt-proof maintenance mechanism, the extension frame and the vacuum chuck;

[0036] Figure 3 is the structure view of the dirt-proof maintenance mechanism;

[0037] Figure 4 is the assembly perspective view of the pressure boosting and flow guiding plug and the membrane hanging assembly;

[0038] Figure 5 is the perspective view of the membrane hanging assembly;

[0039] Figure 6 is the internal structure view of the pressure boosting and flow guiding plug;

[0040] Figure 7 is the distribution diagram of the injection holes on the rotating ring;

[0041] Figure 8 is the sectional view of the pressure boosting and flow guiding plug and the membrane hanging assembly;

[0042] Figure 9 is Figure 8 the local enlarged view of A in FIG. 8;

[0043] Figure 10 isFigure 8 A local enlarged view at B;

[0044] Figure 11 is Figure 8 A local enlarged view at C;

[0045] In the figure: 1, extension frame; 11, vacuum chuck; 2, enhanced pump pipe; 21, electric push rod; 22, gasket ring; 23, supporting spring; 24, plug body; 25, swivel ring; 26, rotating groove; 27, booster flow channel; 28, injection hole; 3, filter ring; 4, rotating core; 41, film hanging piece; 42, through groove; 43, liquid pipe; 5, L-shaped groove; 51, transmission groove; 52, conveying roller; 53, coil spring; 54, elastic belt; 6, flow guide groove; 61, flow resistance ball; 62, conical plug; 63, control cavity; 64, control rod; 65, abutting spring; 66, diaphragm. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0047] As Figures 1 to 11 shown, the injection bumper taking fixture of the present application comprises an extension frame 1 and a vacuum chuck 11 arranged on the extension frame 1.

[0048] It also comprises an anti-fouling maintenance mechanism mounted on the extension frame 1, which is used for anti-fouling and maintenance treatment of the vacuum chuck 11.

[0049] The anti-fouling maintenance mechanism comprises:

[0050] An enhanced pump pipe 2 is fixedly installed on the extension frame 1, and the enhanced pump pipe 2 is in conductive connection with the middle part of the vacuum chuck 11.

[0051] An electric push rod 21 is fixedly installed on the extension frame 1, and the electric push rod 21 extends into the enhanced pump pipe 2, and a piston is slidingly and sealingly installed in the electric push rod 21.

[0052] A gasket ring 22 and a supporting spring 23 are fixedly installed at the junction of the enhanced pump pipe 2 and the vacuum chuck 11, and the supporting spring 23 is installed on the gasket ring 22.

[0053] A booster drainage plug is elastically connected with the gasket ring 22 through the supporting spring 23, and the booster drainage plug is a T-shaped structure, which extends into the vacuum chuck 11, and is used for boosting and draining the exhaust gas of the enhanced pump pipe 2 and then injecting it on the vacuum chuck 11.

[0054] When the intelligent control system is used to control the demolding and transportation of the bumper injection molded part by the pickup clamp for a long time, in order to reduce the rate of irreversible damage of the vacuum chuck 11 caused by dirt and additives, and prolong the service life of the vacuum chuck 11, the anti-pollution maintenance mechanism is arranged in the application to carry out anti-pollution treatment and maintenance treatment on the vacuum chuck 11, thereby reducing the rate of damage of the vacuum chuck 11 caused by reagent corrosion and oil immersion.

[0055] Specifically, after the injection molding equipment is turned on, dirt such as release agent, raw material impurities and lubricating oil exists on the surface of the already injection molded bumper. Under the control of the intelligent control system, the clamp is adsorbed to the surface of the bumper injection molded part. Therefore, when the transportation is completed, the dirt will be left on the surface of the vacuum tube suction cup. The vacuum suction cup 11 is usually made of silica gel, rubber and other materials. The existence of dirt may cause corrosion of the vacuum suction cup 11. Moreover, the existence of oil will penetrate into the rubber, causing damage to the vacuum suction cup 11. Meanwhile, the existence of particulate impurities will also reduce the adsorption performance of the vacuum suction cup 11. In the present application, the pickup clamp includes an extension frame 1 and a vacuum suction cup 11 on the extension frame 1. The extension frame 1 is installed on a mechanical arm or other equipment, and the vacuum suction cup 11 is installed on the extension frame 1. When the pickup clamp picks up the bumper, the mechanical arm drives the pickup clamp to move above the bumper, and drives the clamp to gradually approach the bumper. In this process, the vacuum suction cup 11 is attached to the surface of the bumper. Under the action of pressure, the air in the vacuum suction cup 11 is discharged. At the same time, the electric push rod 21 installed on the extension frame 1 is started. The output end of the electric push rod 21 drives the piston to move in the enhanced pump pipe 2. With the continuous movement of the piston, the volume of the chamber near the vacuum suction cup 11 end of the enhanced pump pipe 2 gradually decreases, causing the pressure in the enhanced pump pipe 2 to increase. Under the action of pressure, the air pushes the pressure boosting drainage plug to approach the grommet 22. With the support spring 23 between the grommet 22 and the pressure boosting drainage plug being gradually compressed, the grommet 22 and the pressure boosting drainage plug are attached, so that the air can only flow into the pressure boosting drainage plug. Under the guidance of the pressure boosting drainage plug, the air is sprayed between the vacuum suction cup 11 and the bumper. Under the impact of the airflow, the particulate impurities with low fixation degree on the surface of the bumper are discharged, and the liquid oil stains have a tendency to move away from the center of the vacuum suction cup 11. With the continuous movement of the piston, when the piston is attached to the pressure boosting drainage plug, the electric push rod 21 is controlled by the pre-set program to retract reversely, so that the piston moves away from the pressure boosting drainage plug. At this time, the chamber near the vacuum suction cup 11 end of the enhanced pump pipe 2 gradually increases, and forms a negative pressure. However, since the vacuum suction cup 11 is attached to the surface of the bumper, the outside air cannot enter the enhanced pump pipe 2, thereby effectively enhancing the adsorption strength of the vacuum suction cup 11 and the bumper. After the transportation is completed, the electric push rod 21 is extended again, so that the negative pressure in the vacuum suction cup 11 gradually increases, thereby making the vacuum suction cup 11 separate from the bumper. When the vacuum suction cup 11 is in the gap between adsorption and pickup, the pre-set program controls the electric push rod 21 to repeatedly extend and retract. In this process, the piston moves back and forth in the pressure boosting pump pipe. When the electric push rod 21 is shortened, the air flows from the outside into the vacuum suction cup 11, and pushes the pressure boosting drainage plug away from the grommet 22. The air enters the enhanced pump pipe 2. When the electric push rod 21 is extended, the air pushes the pressure boosting drainage plug to block the opening of the grommet 22.The air flow is jetted on the vacuum chuck 11 after being pressurized and guided by the pressurizing and guiding plug, and the dirt and impurities adhered to the wall surface of the vacuum chuck 11 are removed by the impact of the air flow.

[0056] By arranging the anti-fouling maintenance mechanism, during the long-term use of the pickup clamp, the movement of the piston in the enhanced pump pipe 2 can enhance the adsorption stability of the vacuum chuck 11 to the bumper in the form of increasing the negative pressure intensity, and can reduce the influence of the particulate impurities on the adsorption effect in the form of discharging the air flow between the vacuum chuck 11 and the bumper, thereby further enhancing the adsorption effect of the vacuum chuck 11. Under the impact of the air flow, the probability of adhering impurities on the vacuum chuck 11 can be reduced, and the vacuum chuck 11 can be cleaned by the air flow when the vacuum chuck 11 adheres impurities, thereby reducing the damage of dirt and impurities to the vacuum chuck 11 and prolonging the service life of the vacuum chuck 11.

[0057] As a preferred embodiment of the present application, the pressurizing and guiding plug is composed of a plug body 24 and a rotating ring 25, the rotating groove 26 is arranged on the plug body 24, the rotating ring 25 is rotatably and sealingly arranged in the rotating groove 26, the pressurizing flow channel 27 is arranged on the plug body 24, the pressurizing flow channel 27 connects the inner cavity of the enhanced pump pipe 2 and the rotating groove 26, the jet hole 28 is arranged on the rotating ring 25, and the jet hole 28 is used for jetting the air flow.

[0058] The jet hole 28 at least includes a straight jet hole and an inclined jet hole, the straight jet hole extends radially along the vacuum chuck 11, and the inclined jet hole extends tangentially along the rotating groove 26.

[0059] The grommet 22 is fixedly arranged with the filter ring 3 on the inner side, and the filter ring 3 is slidably connected with the pressurizing and guiding plug.

[0060] In the application, the pressure boosting flow guide plug is composed of a plug body 24 and a rotating ring 25. When the piston moves towards the vacuum chuck 11, the air pressure in the enhanced pump pipe 2 increases, and the air pressure pushes the pressure boosting flow guide plug to adhere to the gasket ring 22. At this time, the air flow can only flow into the pressure boosting flow channel 27. In the application, the pressure boosting flow channel 27 has a larger diameter at the end close to the piston and gradually decreases at the end away from the piston. After the air flow enters the pressure boosting flow channel 27, the diameter of the pressure boosting flow channel 27 decreases, which will cause the air flow to accelerate. When the air flow enters the rotating groove 26, it is sprayed outward through the spray holes 28 on the rotating ring 25. Since the spray holes 28 at least include a straight spray hole and an inclined spray hole, under the condition that the movement speed of the piston is constant, the less the number of the spray holes 28, the greater the air flow spraying intensity. In the embodiment, the number of the straight spray holes and the inclined spray holes is two, and they are evenly distributed around the rotating ring 25. When the air flow is sprayed on the vacuum chuck 11 through the inclined spray hole, the rotating ring 25 rotates around the rotating groove 26 under the reaction force of the air flow, and the air flow sprayed through the straight spray hole also sprays left and right on the vacuum chuck 11. After the air flow sprayed through the straight spray hole and the inclined spray hole acts on the vacuum chuck 11 at different angles, the surface of the vacuum chuck 11 is effectively cleaned under the impact of the air flow, so that the dirt and the like attached to the vacuum chuck 11 fall off. When the piston moves away from the vacuum chuck 11, the air flow pushes the pressure boosting flow guide plug away from the gasket ring 22, the air flow flows through the gap between the pressure boosting flow guide plug and the gasket ring 22, and is filtered through the filter ring 3 to a certain extent, thereby reducing the probability of impurities entering the enhanced pump pipe 2.

[0061] The application uses the pressure boosting flow guide plug to boost and guide the air flow. On the one hand, the reaction force of the air flow spraying causes the rotating ring 25 to rotate, so that the impact of the air flow on the vacuum chuck 11 is more comprehensive, thereby enhancing the cleaning effect of the air flow on the vacuum chuck 11. On the other hand, the change of the air flow pressure causes the impact force of the air flow on the vacuum chuck 11 to increase, thereby further enhancing the cleaning effect on the vacuum chuck 11.

[0062] As a preferred embodiment of the application, the application further comprises a film hanging assembly for coating a liquid film on the surface of the vacuum chuck 11.

[0063] The film hanging assembly comprises a rotating core 4, a film hanging sheet 41 and a liquid pipe 43.

[0064] The pressure boosting flow guide plug is provided with a through groove 42 in the center, and the rotating core 4 is rotatably installed in the through groove 42. The rotating core 4 is fixedly connected with the rotating ring 25.

[0065] The film hanging sheet 41 is an elastic metal sheet wrapped with a sponge sheet on the outside. The film hanging sheet 41 is installed on the rotating core 4 and extends to the vacuum chuck 11.

[0066] The rotating core 4 is provided with a liquid pipe 43 for conveying the film-hanging liquid to the film-hanging sheet 41.

[0067] After the pickup clamp approaches the bumper and the vacuum chuck 11 is attached to the bumper, with the movement of the piston, the airflow is sprayed through the spray hole 28 on the rotating ring 25, the rotating ring 25 rotates under the action of the reaction force, and the rotating core 4 rotates synchronously, and the film-hanging sheet 41 installed on the rotating core 4 rotates synchronously. The film-hanging sheet 41 in the rotating process is in contact with the vacuum chuck 11 and the bumper at the same time. On the one hand, during the rotation of the film-hanging sheet 41, the gap between the vacuum chuck 11 and the bumper is formed, and the airflow channel is formed in communication with the outside under the action of the air pressure, which enhances the effect of discharging impurities between the bumper and the vacuum chuck 11. At the same time, the existence of the liquid film can also cool the bumper, thereby slowing down the transmission rate of the temperature on the bumper to the vacuum chuck 11. On the other hand, the liquid pipe 43 conveys the film-hanging liquid to the film-hanging sheet 41, and the liquid is left on the vacuum chuck 11 and the bumper during the rotation of the film-hanging sheet 41, thereby filling the gap between the vacuum chuck 11 and the bumper with the liquid. Combined with the subsequent negative pressure traction effect, the connection effect between the vacuum chuck 11 and the bumper is enhanced. At the same time, the existence of the liquid film can also effectively reduce the probability of oil stains and other substances directly adhering to the vacuum chuck 11, thereby enhancing the effect of falling off the oil stains and other impurities adhering to the vacuum chuck 11 during the subsequent airflow cleaning.

[0068] It should be noted that in the present embodiment, the film-hanging liquid is 0.1%-0.2% soap water. In other embodiments of the present application, the film-hanging liquid can also be pure water or other aqueous solutions.

[0069] The rotating core 4 is provided with an L-shaped groove 5, and the film-hanging sheet 41 is slidingly installed in the L-shaped groove 5. The liquid pipe 43 is in communication with the L-shaped groove 5.

[0070] The rotating core 4 is provided with a transmission groove 51, and the transmission groove 51 is provided with symmetrically arranged conveying rollers 52 rotatingly installed therein. The film-hanging sheet 41 extends between the two conveying rollers 52.

[0071] One side of the conveying roller 52 is fixedly provided with a coil spring 53, and the other side is fixedly provided with an elastic belt 54. The coil spring 53 is fixedly connected with the rotating core 4, and the elastic belt 54 extends and is fixed on the piston.

[0072] In order to avoid the influence of the film-hanging piece 41 on the sealing effect of the vacuum chuck 11 in the vacuum adsorption process, in the present application, when the piston moves away from the vacuum chuck 11, the elastic belt 54 wound on one side of the conveying roller 52 in the initial state is gradually stretched and pulls the conveying roller 52 to rotate as the piston moves. When the conveying roller 52 rotates, the film-hanging piece 41 clamped between the conveying rollers 52 is conveyed upward, and then the film-hanging piece 41 is gradually retracted into the L-shaped groove 5, at this time the coil spring 53 is deformed. Then, when the piston moves towards the vacuum chuck 11, the elastic belt 54 gradually relaxes as the piston gradually approaches the plug body 24. Under the elastic action of the coil spring 53, the conveying roller 52 reversely rotates, and then pushes the film-hanging piece 41 to move outward along the L-shaped groove 5. After the film-hanging piece 41 contacts the vacuum chuck 11, it extends radially along the vacuum chuck 11 under the obstruction of the vacuum chuck 11, thereby realizing the extension and retraction storage of the film-hanging piece 41. In the air flow injection process, the film-hanging piece 41 is attached to the vacuum chuck 11, which can clean and film the vacuum chuck 11. When vacuum adsorption is performed, the film-hanging piece 41 is stored, which can effectively avoid the influence of the film-hanging piece 41 on the adsorption effect of the vacuum chuck 11.

[0073] The rotating core 4 is provided with a flow guide groove 6, one end of the liquid pipe 43 is rotatably installed in the flow guide groove 6, the flow guide groove 6 is in communication with the L-shaped groove 5, a flow resistance ball 61 is rotatably and sealingly installed at the opening of the flow guide groove 6, and the surface of the flow resistance ball 61 is provided with uniformly distributed grooves.

[0074] The flow resistance ball 61 is rotatably connected with the flow guide groove 6 through a one-way bearing.

[0075] In order to make the outflow of the film-hanging liquid more orderly, in actual application, the liquid pipe 43 is rotatably and sealingly connected with the flow guide groove 6, the film-hanging liquid in the liquid pipe 43 directly flows into the flow guide groove 6, and then flows along the flow guide groove 6 under the action of gravity and is finally blocked by the flow resistance ball 61. When the film-hanging piece 41 moves outward from the L-shaped groove 5, the film-hanging piece 41 drives the flow resistance ball 61 to rotate under the action of friction, the film-hanging liquid flows into the L-shaped groove 5 through the grooves on the flow resistance ball 61 and is absorbed by the film-hanging piece 41 to supplement the film-hanging liquid for the film-hanging piece 41. At the same time, since the flow resistance ball 61 rotates through the one-way bearing, when the film-hanging piece 41 reversely retracts into the L-shaped groove 5, the flow resistance ball 61 cannot rotate, thereby blocking the flow guide groove 6.

[0076] The L-shaped groove 5 is fixedly installed with a tapered plug 62 at the bottom end, the tapered plug 62 is made of elastic rubber material, the film-hanging piece 41 penetrates through the tapered plug 62, and the small opening end of the tapered plug 62 faces the vacuum chuck 11.

[0077] When the film-hanging sheet 41 is reversely recovered, the presence of the conical plug 62 scrapes the film-hanging sheet 41, and then the film-hanging liquid contained in the film-hanging sheet 41 is separated from the film-hanging sheet 41 under the scraping force and discharged outward along the L-shaped groove 5. In actual application, when the pickup clamp is in a clean state, the pickup clamp is controlled to spray paint and clean the film-hanging in a specific area, so that the discharged contaminated film-hanging liquid is discharged to the specified area.

[0078] The control cavity 63 is formed in the rotating core 4, the control rod 64 is elastically mounted in the control cavity 63 by the abutting spring 65, the control cavity 63 is in communication with the flow guide groove 6, the diaphragm 66 is fixedly installed in the control cavity 63, the diaphragm 66 is located on the movement path of the control rod 64, and the control rod 64 blocks the flow guide groove 6 by pushing the diaphragm 66.

[0079] When the pickup clamp is used for adsorption pickup, in order to avoid the film-hanging liquid from dropping, when the vacuum chuck 11 contacts the bumper, the control rod 64 contacts the bumper as the vacuum chuck 11 gradually adheres, and the control rod 64 is pushed, the control rod 64 pushes the diaphragm 66 through the control cavity 63, so that the diaphragm 66 blocks the flow guide groove 6, then when the piston moves downward and discharges airflow, the film-hanging sheet 41 moves outward of the L-shaped groove 5, at this time, since the flow guide groove 6 is blocked, although the flow blocking ball 61 can rotate, the content of the film-hanging liquid discharged into the L-shaped groove 5 is extremely limited, so when the film-hanging sheet 41 rotates in the gap between the vacuum chuck 11 and the bumper, only a slight wetting effect can be achieved, and in the process of the film-hanging sheet 41 reversely shrinking into the L-shaped groove 5, since the film-hanging sheet 41 contains little liquid, the film-hanging liquid can also be effectively prevented from dropping under the scraping of the conical plug 62, and when the pickup clamp does not pick up, at this time, the diaphragm 66 does not block the flow guide groove 6 under the action of the abutting spring 65, so when the film-hanging sheet 41 moves outward of the L-shaped groove 5, the groove on the flow blocking ball 61 can continuously transfer the film-hanging liquid to the film-hanging sheet 41, so that the film-hanging sheet 41 is relatively wet, and when the film-hanging sheet 41 rotates, not only the cleaning effect on the vacuum chuck 11 can be enhanced, but also a layer of relatively obvious water marks can be attached to the vacuum chuck 11, so that the aging rate of the vacuum chuck 11 in the high-temperature environment formed by injection molding is reduced.

[0080] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An injection molding bumper taking fixture, comprising an extension frame (1) and a vacuum chuck (11) arranged on the extension frame (1); characterized in that Further comprising a dirt-proof maintenance mechanism mounted on the extension frame (1), the dirt-proof maintenance mechanism is used for dirt-proof and maintenance treatment of the vacuum chuck (11); The dirt-proof maintenance mechanism comprises: A reinforced pump pipe (2) is fixedly installed on the extension frame (1), and the reinforced pump pipe (2) is in conductive connection with the middle part of the vacuum chuck (11); An electric push rod (21) is fixedly installed on the extension frame (1), the electric push rod (21) extends into the reinforced pump pipe (2), and the electric push rod (21) is slidably and sealingly installed with a piston in the reinforced pump pipe (2); A gasket ring (22) and a supporting spring (23) are fixedly installed at the junction of the reinforced pump pipe (2) and the vacuum chuck (11), and the supporting spring (23) is installed on the gasket ring (22); A booster drainage plug is elastically connected with the gasket ring (22) through the supporting spring (23), the booster drainage plug is a T-shaped structure, the booster drainage plug extends into the vacuum chuck (11), and the booster drainage plug is used for boosting and draining the exhaust of the reinforced pump pipe (2) and then spraying on the vacuum chuck (11); The booster drainage plug is composed of a plug body (24) and a rotating ring (25), a rotating groove (26) is formed in the plug body (24), the rotating ring (25) is rotatably and sealingly installed in the rotating groove (26), a booster flow channel (27) is formed in the plug body (24), the booster flow channel (27) connects the inner cavity of the reinforced pump pipe (2) and the rotating groove (26) in a conductive manner, and a spraying hole (28) is formed in the rotating ring (25), the spraying hole (28) is used for spraying airflow; The spraying hole (28) comprises at least a straight spraying hole and an inclined spraying hole, the straight spraying hole extends along the radial direction of the vacuum chuck (11), and the inclined spraying hole extends along the tangential direction of the rotating groove (26).

2. A molded bumper retrieval fixture according to claim 1, wherein: A filter ring (3) is fixedly installed on the inner side of the gasket ring (22), and the filter ring (3) is in sliding connection with the booster drainage plug.

3. A molded bumper retrieval fixture according to claim 1, wherein: Further comprising a film hanging assembly, the film hanging assembly is used for coating a liquid film on the surface of the vacuum chuck (11); The film hanging assembly comprises a rotating core (4), a film hanging sheet (41) and a liquid pipe (43); A through groove (42) is formed in the center of the booster drainage plug, the rotating core (4) is rotatably installed in the through groove (42), and the rotating core (4) is fixedly connected with the rotating ring (25); The film hanging sheet (41) is an elastic metal sheet wrapped with a sponge sheet, the film hanging sheet (41) is installed on the rotating core (4), and the film hanging sheet (41) extends to the vacuum chuck (11); The liquid pipe (43) is installed on the rotating core (4), and the liquid pipe (43) is used for delivering film hanging liquid to the film hanging sheet (41).

4. A molded bumper retrieval fixture according to claim 3, wherein: An L-shaped groove (5) is formed in the rotating core (4), the film hanging sheet (41) is slidably installed in the L-shaped groove (5), and the liquid pipe (43) is in conductive connection with the L-shaped groove (5). The transmission groove (51) is arranged in the rotating core (4), the transmission groove (51) is rotatably arranged with the symmetrical transmission roller (52), the film-hanging piece (41) extends to the two transmission rollers (52). The transmission roller (52) is fixedly installed with the coil spring (53) on one side and the elastic belt (54) on the other side, the coil spring (53) is fixedly connected with the rotating core (4), and the elastic belt (54) extends and is fixed on the piston.

5. A molded bumper retrieval fixture according to claim 4, wherein: The rotating core (4) is provided with the flow guide groove (6), one end of the liquid pipe (43) is rotatably arranged in the flow guide groove (6), the flow guide groove (6) is in communication with the L-shaped groove (5), the flow guide groove (6) is rotatably and sealingly arranged with the flow resistance ball (61) at the opening, the flow resistance ball (61) is provided with the uniformly distributed grooves on the surface, and the flow resistance ball (61) is in frictional contact with the film-hanging piece (41).

6. A molded bumper retrieval fixture according to claim 5, wherein: The flow resistance ball (61) is rotatably connected with the flow guide groove (6) through the one-way bearing.

7. A molded bumper retrieval fixture according to claim 6 wherein: The L-shaped groove (5) is fixedly installed with the tapered plug (62) at the bottom end, the tapered plug (62) is made of elastic rubber material, the film-hanging piece (41) penetrates the tapered plug (62), and the small opening end of the tapered plug (62) faces the vacuum chuck (11).

8. A molded bumper retrieval fixture according to claim 7, wherein: The rotating core (4) is provided with the control cavity (63), the control cavity (63) is elastically arranged with the control rod (64) through the abutting spring (65), the control cavity (63) is in communication with the flow guide groove (6), the control cavity (63) is fixedly installed with the diaphragm (66), the diaphragm (66) is located on the movement path of the control rod (64), and the control rod (64) blocks the flow guide groove (6) by pushing the diaphragm (66).

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