Multi-station continuous demolding and conveying device and method for automobile die-casting accessories

Abstract

The invention relates to the technical field of automobile part die-casting demolding, in particular to a multi-station automobile die-casting part continuous demolding conveying device and a method thereof.The multi-station automobile die-casting part continuous demolding conveying device comprises two first side plates on the front side, two second side plates on the rear side and a conveying belt, and a plurality of movable die assemblies are arranged between the two first side plates; a fixed mold assembly is arranged between the two second side plates, and a horizontal placing assembly is arranged below the fixed mold assembly. According to the device, the horizontally-placed assembly is arranged, during demolding, the automobile die-casting accessories do not need to be manually taken down, and the situation that the formed accessories directly fall out and are damaged after demolding is avoided; and by arranging the knocking structure, the fixed mold can be knocked during demolding, demolding of the formed accessory is accelerated, and the demolding efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of demoulding of automobile die-casting parts, and in particular relates to a multi-station continuous demoulding and conveying device for automobile die-casting parts and a method thereof. Background Art

[0002] During automobile production, some accessories, such as transmission housings, gears, and wheel hubs, usually need to be produced in one piece through die-casting due to their own high requirements. The die-casting process usually includes steps such as mold closing, injecting molten metal, cooling and molding, mold opening, and demolding.

[0003] For example, the invention application with publication number CN119927173A discloses an integrated die-casting mold for a handbrake bracket of a new energy vehicle in the field of die-casting mold technology, including a fixed mold, a lifting mechanism, a mold core and two movable molds, the mold core can be slid in the vertical direction in the fixed mold; the mold core includes a cavity structure for forming the inner wall of the handbrake bracket connector, and a two-stage lifting component is provided in the mold core; the fixed mold, the mold core and the two movable molds together constitute a complete molding cavity for the handbrake bracket handle and the connector; through the pre-separation of the two movable molds and the coordinated action of the two-stage lifting component in the mold core, the complex structure of the connector of the handbrake bracket can be demolded in stages and in an orderly manner, completely avoiding the mold jamming problem caused by the single ejection method of the traditional mold; through the setting of the synchronous action of the mold core and the two movable molds, the number of independent driving devices required for demolding is reduced, which significantly shortens the single-mold production cycle and reduces the investment in production costs, thereby improving production efficiency.

[0004] Combining the above cases with actual conditions, we found the following problems: During the die-casting demolding process of automotive parts, it is usually necessary to manually remove the molded parts from the mold, especially in some multi-station die-casting devices. The fixed mold and the movable mold are usually suspended in the air and the mold is closed by a hydraulic device. During demolding, the molded parts are ejected by a pin, which requires manual assistance to prevent the parts from falling directly and causing damage. The demolding efficiency is low and the workers are easily burned. Summary of the Invention

[0005] In order to overcome the defects of the prior art, the purpose of the present invention is to provide a multi-station automotive die-casting accessories continuous demolding and conveying device and method thereof. By setting a baffle that slides up and down with the movable mold and rotates synchronously with the fixed mold to receive the molded accessories, no manual operation is required, and the molded accessories can be directly sent to the conveyor belt for transportation and collection, thereby improving demolding efficiency and avoiding burns to workers.

[0006] To achieve the above objectives, the present invention provides a multi-station continuous demoulding and conveying device for automotive die-casting parts, comprising two first side plates at the front, two second side plates at the rear, and a conveyor belt. A plurality of movable mold assemblies are disposed between the two first side plates, a fixed mold assembly is disposed between the two second side plates, and a flat assembly is disposed below the fixed mold assembly. The movable mold assembly includes a hydraulic press, a movable plate, and a plurality of movable molds. The output shaft of the hydraulic press is fixedly connected to the plurality of movable molds through the movable plate. A piston rod is fixed to the left and right edges of the rear side wall of the movable plate. A U-shaped tube is slidably connected to the rear of the piston rod. A bellows is connected to the rear end of the U-shaped tube adjacent to the piston rod. The fixed mold assembly includes a servo motor, an ejection structure and a plurality of fixed molds, and the ejection structure includes a rotating rod, a push rod and a plurality of ejector rods; The horizontal assembly includes several baffles, two left and right mounting structures and two left and right fixed rods. The rear end of the fixed rod is fixedly connected to the outer wall of the rotating rod. The several baffles correspond one-to-one to the positions of several movable molds. The mounting structure includes a mounting plate and a limit block. The limit block is fixed to the outside of the corresponding mounting plate. The limit block is slidably connected to the inner side of the front end of the fixed rod. The top end of the bellows passes through the bottom surface of the fixed rod and is sealed with the bottom surface of the limit block.

[0007] In this setting, by setting up a movable mold assembly, when the movable mold moves forward, the piston rod pushes the air inside the U-shaped tube into the bellows, pushing the limit block and the mounting plate up, and then driving the baffle plate to move up to block the fixed mold opening, and as the rotating rod rotates until the fixed mold opening faces downward, the molded accessories after demolding can fall directly on the conveyor belt and be collected at the right end, avoiding the molded accessories from falling out and being damaged during the subsequent rotation and demolding process.

[0008] In the technical solution of the present invention, a fixed plate is fixed between the two first side plates on the front side, the hydraulic press is fixed to the middle of the front side wall of the fixed plate, the front end of the output shaft of the hydraulic press passes through the fixed plate and is fixedly connected to the intermediate plate, the intermediate plate is fixedly connected to the movable plate, a number of the movable molds are regularly fixed on the front side of the movable plate, and the two ends of the movable plate are respectively slidably connected to the first side plates on both sides.

[0009] In this setting, the hydraulic press drives the movable mold to move through the intermediate plate. The intermediate plate is set to distribute the pressure of the hydraulic press to ensure that the pressure on all fixed molds and movable molds when closing the mold is as uniform as possible.

[0010] In the technical solution of the present invention, the U-shaped tube is fixed to the inner wall of the first side plate on the corresponding side, the bending part of the U-shaped tube is set forward, the piston rod passes through the outer section corresponding to the U-shaped tube, and the bellows is connected to the rear end of the inner section corresponding to the U-shaped tube.

[0011] In this setting, a U-shaped tube is provided to ensure that when the piston rod moves forward, the gas inside the U-shaped tube pushes the baffle up. When the piston rod moves backward, the baffle is in a horizontal state, and the gas inside the U-shaped tube pushes the baffle backward.

[0012] In the technical solution of the present invention, the fixing rod is in a horizontal T shape, a vertical limit groove is provided in the vertical section of the fixing rod, the limit block is slidably connected in the corresponding limit groove, a limit rod is fixed between the upper and lower side walls of the limit groove, the limit rod passes through the corresponding limit block and the two are slidably connected, a second spring is provided between the top surface of the limit groove and the top surface of the limit block, and the connection between the bellows and the bottom surface of the limit block is located on the front side of the limit rod.

[0013] In this configuration, a second spring is provided to assist in resetting the mounting plate, and the bellows is provided in front of the limit rod to prevent the limit rod from extending into the bellows and affecting the sealing.

[0014] In the technical solution of the present invention, several of the baffles are fixedly connected by a crossbeam, and sliders are symmetrically fixed on the upper and lower outer walls of the left and right outermost baffles, and the inner wall of the mounting plate is provided with a sliding groove adapted to the slider, and a sliding rod is fixed between the front and rear side walls of the sliding groove, and the sliding rod passes through the corresponding slider and the two are slidably connected, and a third spring is provided on the outer portion of the sliding rod located between the rear side wall of the sliding groove and the slider.

[0015] In this setting, by setting a slide groove, the push block on the front side of the push rod will push the movable cylinder to slide forward and drive the ejector rod to eject the molded accessories outward. At the same time, the baffle can also be pushed outward along the slide groove to prevent the baffle from blocking the molded accessories from being ejected, resulting in the inability to demold.

[0016] In the technical solution of the present invention, the two ends of the rotating rod are respectively rotatably connected to the second side plates on both sides, the push rod is coaxially arranged inside the rotating rod, and the two ends of the push rod are respectively fixedly connected to the second side plates on both sides, a plurality of ejection grooves are provided in the rotating rod, and a movable cylinder is slidably connected in the ejection groove, and the front ends of the plurality of movable cylinders are fixed in a one-to-one correspondence with the rear ends of the plurality of ejector rods, and an elliptical push hole is provided in the middle of the movable cylinder, which passes through the left and right sides, and the push rod passes through the push hole and a push block is fixed on the front side of the outer wall corresponding to the position of the push rod and the push hole.

[0017] In this setting, the long axis of the push hole is horizontal when the mold is closed, the push block is also horizontal, and the front end of the push block is in close contact with the front side wall of the push hole. When the rotating rod drives the movable cylinder to rotate counterclockwise, the push hole rotates counterclockwise synchronously. Since the push rod and the push block are fixed, the horizontal distance between the push block and the push hole gradually decreases, so the push block will push the push hole forward, thereby driving the ejector rod to eject the mold.

[0018] In the technical solution of the present invention, a retaining ring is fixed on the rear side of the ejection groove, a first spring is provided between the rear side wall of the retaining ring and the rear end of the movable cylinder, a driving tooth is coaxially fixed to the output shaft of the servo motor, and a first driven tooth is coaxially fixed to the right end of the rotating rod, and the driving tooth and the first driven tooth are meshed with each other.

[0019] In this arrangement, the retaining ring and the first spring are provided to drive the movable cylinder to retract and reset backward, and the driving teeth and the first driven teeth engaged with the servo motor drive the rotating rod to rotate.

[0020] In the technical solution of the present invention, a knocking structure is provided in the middle of the right side wall of the fixed mold, and the knocking structure includes a shaft rod, a knocking head, and an L-shaped placement plate is fixed at the rear of the left side wall of the fixed mold. The rear end of the shaft rod is rotatably connected to the front end of the placement plate, and the knocking head and the shaft rod are fixedly connected by an elastic rod. A wedge block is fixed on the right side of the elastic rod, and an L-shaped main tooth plate is fixed on the rear side wall of the beam. A second driven tooth is coaxially fixed to the rear end of the shaft rod, and the main tooth plate is engaged with the second driven tooth.

[0021] In this setting, when the baffle moves up, the main tooth plate drives the second driven tooth to rotate clockwise, driving the elastic rod and the striking head at the front end to rotate clockwise. When the wedge block rotates to contact the top block, the elastic rod will be pushed outward and gradually bend. When the wedge block rotates to separate from the top block, the elastic rod rebounds instantly and drives the striking head to hit the fixed mold, accelerating the separation of the molding accessories and the fixed mold.

[0022] In the technical solution of the present invention, a connecting rod is fixed on the right side of the push rod, a connecting block is fixed on the front end of the connecting rod, a transposition groove is provided in the middle of the right side wall of the fixed mold, the connecting block is slidably connected in the transposition groove, the right end face of the connecting block extends out corresponding to the transposition groove and the end face is provided with a push block, the left side of the push block is fixedly connected to the secondary gear through a connecting rod, the connecting rod passes through the connecting block and the two are rotatably connected, and a secondary tooth plate meshing with the secondary gear is fixed in the middle of the bottom surface of the transposition groove.

[0023] In this setting, by providing a transposition groove and a secondary tooth plate, the top block can be rotated 180° and changed in position, to avoid contact between the flat surfaces of the top block and the wedge block when the rotation direction of the striking head changes, which causes the wedge block to be unable to drive the outer top of the elastic rod to bend, thereby rendering the entire device unusable.

[0024] On the other hand, the present invention also provides a method for continuously demoulding and conveying multi-station automobile die-casting parts, which uses the above-mentioned continuous demoulding and conveying device for multi-station automobile die-casting parts, including the following steps: S1. After the die-casting of the accessory is completed and cooled, the hydraulic press is started to drive the movable die forward. At this time, the piston rod pushes the air inside the U-shaped tube into the bellows, pushing the limit block and the mounting plate upward, thereby driving the baffle plate upward. S2. When the baffle moves up to block the front opening of the fixed mold, the hydraulic press is turned off and the servo motor is started to drive the rotating rod counterclockwise through the driving gear and the first driven gear. When the rotating rod rotates, the push block on the front side of the push rod pushes the movable cylinder to slide forward, driving the ejector rod to eject the molded part outward. At the same time, the baffle is pushed outward along the slide groove. At this time, the baffle is in a horizontal state. S3. After the rotating rod rotates 90° counterclockwise, the servo motor is turned off and the hydraulic press is started again to move the movable mold backward for a distance. At this time, the piston rod pushes the air bellows inside the U-shaped tube, pulling the limit block and the mounting plate backward, thereby driving the baffle to separate from the front opening of the fixed mold. At this time, the molded parts can fall on the conveyor belt and be collected at the right end. Then, the servo motor is started again to rotate the rotating rod 90° clockwise to reset. After reset, the servo motor is started again to drive the movable mold and the fixed mold to close the mold; S4. During the upward movement of the baffle, the main tooth plate drives the second driven tooth to rotate clockwise, which in turn drives the spring rod and the striking head at the front end to rotate clockwise. When the wedge block rotates to contact the top block, the spring rod is pushed outward and gradually bends. When the wedge block rotates to separate from the top block, the spring rod rebounds instantly and drives the striking head to hit the fixed mold, accelerating the separation of the molding accessory and the fixed mold. S5. During the rotation of the rotating rod, the ejector rod pushes outward and drives the connecting rod and the connecting block to move forward along the transposition groove. When passing the secondary tooth plate, the secondary gear drives the ejector block to rotate 180° so that the inclined surface of the ejector block faces downward. During the process of the baffle moving backward and separating from the front opening of the fixed mold, the main tooth plate drives the second driven tooth to rotate counterclockwise and drives the elastic rod and the striking head at the front end to rotate counterclockwise. When the wedge block rotates to contact the ejector block, the elastic rod will be pushed outward and gradually bent. When the wedge block rotates to separate from the ejector block, the elastic rod rebounds instantly and drives the striking head to hit the fixed mold, further accelerating the separation of the molding accessories and the fixed mold.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, by arranging a movable mold assembly and a horizontal placement assembly, after the accessory is die-cast and cooled and formed, the hydraulic press is started to drive the movable mold forward. At this time, the piston rod pushes the air inside the U-shaped tube into the bellows to push the limit block and the mounting plate up, thereby driving the baffle to move up and block the front opening of the fixed mold. After that, the servo motor is started to drive the rotating rod counterclockwise through the driving gear and the first driven gear. When the rotating rod rotates, the push block on the front side of the push rod will push the movable cylinder to slide forward and drive the ejector rod to eject the formed accessory outward. When the rotating rod rotates 90° counterclockwise, the hydraulic press is started again to move the movable mold backward and the mounting plate backward, thereby driving the baffle to separate from the front opening of the fixed mold. The formed accessory can fall on the conveyor belt for transportation without manual assistance, thereby avoiding injuries to workers and preventing the accessories from falling directly and being damaged.

[0026] 2. In the present invention, during the upward movement of the baffle, the main tooth plate drives the second driven tooth to rotate clockwise, thereby driving the elastic rod and the striking head at the front end to rotate clockwise. The elastic rod will be pushed outward and gradually bent. When the wedge block rotates to separate from the top block, the elastic rod rebounds instantly and drives the striking head to hit the fixed mold, thereby accelerating the separation of the molding accessories and the fixed mold. During the rotation of the rotating rod, the connecting block moves forward along the transposition groove through the secondary tooth plate, and the secondary gear drives the top block to rotate 180°. During the backward movement of the baffle, the striking head will hit the fixed mold again, thereby further accelerating the separation of the molding accessories and the fixed mold. The demolding is accelerated by two knocks, thereby improving the demolding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is the overall structural assembly diagram of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of a horizontally placed component in the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle; Figure 7 It is a cross-sectional view of the installation structure in the present invention; Figure 8 Schematic diagram of the movable mold assembly in the present invention; Figure 9 It is a cross-sectional view of the ejection structure in the present invention; Figure 10 It is a partial schematic diagram of the ejection structure in the present invention; Figure 11 It is a schematic diagram of the knocking structure in the present invention; Figure 12 Another schematic diagram of the knocking structure in the present invention; Figure 13 For the present invention Figure 12 Enlarged view of point C in the middle; Figure 14 It is a cross-sectional view of the top block in the present invention; Description of reference numerals: 100, movable mold assembly; 101, fixed plate; 102, hydraulic press; 103, intermediate plate; 104, movable plate; 105, movable mold; 106, piston rod; 107, U-shaped tube; 108, bellows; 200, fixed mold assembly; 201, fixed mold; 202, servo motor; 203, driving gear; 204, first driven gear; 210, ejection structure; 211, rotating rod; 212, ejector rod; 212a, connecting rod; 212b, connecting block; 213, movable cylinder; 214, ejection hole; 215, first spring; 216, retaining ring; 217, ejector rod; 218, ejection groove; 219, ejection block; 220, striking structure; 221, placement plate; 222, shaft; 223, second driven gear; 224, striking head; 225, spring rod; 225a, wedge block; 226, ejector block; 227, transposition groove; 228, secondary gear plate; 229, secondary gear; 300, horizontal assembly; 301, baffle; 302, crossbeam; 303, main gear plate; 304, fixing rod; 310, mounting structure; 311, mounting plate; 312, limit block; 313, limit rod; 314, second spring; 315, slide groove; 316, slide rod; 317, third spring; 318, slider; 400, first side panel; 500, second side panel; 600. Conveyor belt. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0029] Unless expressly stated otherwise, throughout the specification, the term “comprise” or variations thereof such as “include” or “comprising” will be understood to include the stated elements or components but not to exclude other elements or components.

[0030] Reference Figures 1-14 As shown, this embodiment provides a technical solution: A multi-station continuous demoulding and conveying device for automotive die-casting parts includes two front first side plates 400, two rear second side plates 500, and a conveyor belt 600. Several movable mold assemblies 100 are disposed between the two first side plates 400, a fixed mold assembly 200 is disposed between the two second side plates 500, a flattening assembly 300 is disposed below the fixed mold assembly 200, and the conveyor belt 600 is located below the fixed mold assembly 200. The movable mold assembly 100 includes a hydraulic press 102, a movable plate 104, and a plurality of movable molds 105. The output shaft of the hydraulic press 102 is fixedly connected to the plurality of movable molds 105 via the movable plate 104. A piston rod 106 is fixed to the left and right edges of the rear side wall of the movable plate 104. A U-shaped tube 107 is slidably connected to the rear of the piston rod 106. The rear end of the U-shaped tube 107 adjacent to the piston rod 106 is connected to a bellows 108. The rear end of the piston rod 106 passes through the front end of the U-shaped tube 107, and the contact point is sealed by a rubber O-ring. This is a conventional sealing measure and will not be described in detail here. The fixed mold assembly 200 includes a servo motor 202, an ejection structure 210, and a plurality of fixed molds 201. The ejection structure 210 includes a rotating rod 211, a push rod 217, and a plurality of ejector rods 212. The servo motor 202 drives the rotating rod 211 to rotate, and cooperates with the push rod 217 to enable the ejector rod 212 to push outward during the rotation to eject the formed automotive die-cast parts. The plurality of fixed molds 201 and the plurality of movable molds 105 correspond one-to-one to form multiple workstations, thereby improving the efficiency of automotive parts die-casting. The rear side wall of the fixed mold 201 and the outer wall of the rotating rod 211 are fixedly connected by a metal rod, and the specific fixing method can be bolt connection; The horizontal assembly 300 includes a plurality of baffles 301, two left and right mounting structures 310, and two left and right fixing rods 304. The rear end of the fixing rod 304 is fixedly connected to the outer wall of the rotating rod 211. The plurality of baffles 301 correspond to the positions of the plurality of movable molds 105. The mounting structure 310 includes a mounting plate 311 and a limit block 312. The limit block 312 is fixed to the outer side of the corresponding mounting plate 311. The limit block 312 is slidably connected to the inner side of the front end of the fixing rod 304. The top of the bellows 108 passes through the fixing rod 304. The bottom surface is tightly connected to the bottom surface of the limit block 312. When the movable mold 105 moves forward, the piston rod 106 pushes the air inside the U-shaped tube 107 into the bellows 108 and pushes the limit block 312 and the mounting plate 311 upward, thereby driving the baffle 301 upward to block the opening of the fixed mold 201, and as the rotating rod 211 rotates until the opening of the fixed mold 201 faces downward, the molded accessories can fall directly on the conveyor belt 600 after demolding and be collected at the right end, avoiding the molded accessories from falling out and being damaged during the subsequent rotation and demolding process.

[0031] See also Figure 1-Figure 3As shown, a fixed plate 101 is fixed between the two first side plates 400 on the front side, and a hydraulic press 102 is fixed to the middle of the front side wall of the fixed plate 101. The front end of the output shaft of the hydraulic press 102 passes through the fixed plate 101 and is fixedly connected to the intermediate plate 103. The intermediate plate 103 and the movable plate 104 are fixedly connected. A number of movable molds 105 are regularly fixed on the front side of the movable plate 104. The two ends of the movable plate 104 are slidingly connected to the first side plates 400 on both sides respectively. The hydraulic press 102 is fixed to the fixed plate 101 by bolts, and the intermediate plate 103 and the movable plate 104 are fixed by metal rods. The intermediate plate 103 is provided to share the pressure of the hydraulic press 102 to ensure that the pressure on all fixed molds 201 and movable molds 105 when closing the mold is as uniform as possible.

[0032] See also Figure 4 As shown, the U-shaped tube 107 is fixed to the inner wall of the first side plate 400 on the corresponding side, the bending part of the U-shaped tube 107 is set forward, the piston rod 106 passes through the outer section of the corresponding U-shaped tube 107, and the bellows 108 is connected to the rear end of the inner section of the corresponding U-shaped tube 107, ensuring that when the piston rod 106 moves forward, the internal gas of the U-shaped tube 107 pushes the baffle 301 to move upward, and when the piston rod 106 moves backward, the baffle 301 is in a horizontal state, and the internal gas of the U-shaped tube 107 pushes the baffle 301 to move backward.

[0033] See also Figure 5-Figure 7 As shown, the fixing rod 304 is in a horizontal T shape, and a vertical limit groove is provided in the vertical section of the fixing rod 304. The limit block 312 is slidably connected in the corresponding limit groove. The limit rod 313 is fixed between the upper and lower side walls of the limit groove. The sliding of the limit block 312 is limited by setting the limit groove and the limit rod 313. The limit rod 313 passes through the corresponding limit block 312 and the two are slidably connected. A second spring 314 is provided between the top surface of the limit groove and the top surface of the limit block 312. The second spring 314 is provided to assist the mounting plate 311 in resetting. The connection between the bellows 108 and the bottom surface of the limit block 312 is located in front of the limit rod 313 to prevent the limit rod 313 from extending into the bellows 108 and affecting the sealing.

[0034] Furthermore, several baffles 301 are welded by cross beams 302, and sliders 318 are welded symmetrically on the outer walls of the left and right outermost baffles 301. A sliding groove 315 that is compatible with the slider 318 is provided on the inner wall of the mounting plate 311. A sliding rod 316 is fixed between the front and rear side walls of the sliding groove 315. The sliding rod 316 passes through the corresponding slider 318 and the two are slidably connected. The sliding rod 316 is located between the rear side wall of the sliding groove 315 and the slider 318. A third spring 317 is provided on the outer sleeve of the sliding rod 316. By setting the sliding groove 315, the push block 219 on the front side of the push rod 217 will push the movable cylinder 213 to slide forward and drive the ejector rod 212 to eject the molded accessories outward. The baffle 301 can also be pushed outward along the sliding groove 315 to prevent the baffle 301 from blocking the molded accessories from being ejected, resulting in the inability to demold.

[0035] See also Figures 8-10 As shown, the two ends of the rotating rod 211 are respectively rotatably connected to the second side plates 500 on both sides, the push rod 217 is coaxially arranged inside the rotating rod 211, and the two ends of the push rod 217 are respectively fixedly connected to the second side plates 500 on both sides, and a plurality of ejection grooves 218 are provided in the rotating rod 211. The movable cylinder 213 is slidably connected in the ejection groove 218. The front ends of the plurality of movable cylinders 213 are fixed one-to-one with the rear ends of the plurality of ejector rods 212. The middle part of the movable cylinder 213 is provided with an elliptical push hole 214 that passes through the left and right sides. The push rod 217 passes through the push hole 214 and the push rod 217 is connected to the push hole 214. A push block 219 is fixed on the front side of the outer wall at the position corresponding to the hole 214. When the mold is closed, the long axis of the push hole 214 is horizontal, the push block 219 is also horizontal, and the front end of the push block 219 is in close contact with the front side wall of the push hole 214. When the rotating rod 211 drives the movable cylinder 213 to rotate counterclockwise, the push hole 214 rotates counterclockwise synchronously. Since the push rod 217 and the push block 219 are fixed, the horizontal distance between the push block 219 and the push hole 214 gradually decreases, so the push block 219 will push the push hole 214 forward, thereby driving the ejector rod 212 to eject the mold.

[0036] Specifically, a retaining ring 216 is fixed on the rear side of the ejection groove 218, and a first spring 215 is provided between the rear side wall of the retaining ring 216 and the rear end of the movable cylinder 213. By arranging the retaining ring 216 and the first spring 215, the movable cylinder 213 can be driven to retract and reset backward. The retaining ring 216 is slidingly connected to the movable cylinder 213, and the output shaft of the servo motor 202 is coaxially fixed with a driving tooth 203, and the right end of the rotating rod 211 is coaxially fixed with a first driven tooth 204, and the driving tooth 203 and the first driven tooth 204 are meshed with each other. The meshing driving tooth 203 and the first driven tooth 204 of the servo motor 202 drive the rotating rod 211 to rotate.

[0037] See also Figure 11-14As shown, a knocking structure 220 is provided in the middle of the right side wall of the fixed mold 201, and the knocking structure 220 includes a shaft rod 222, a knocking head 224 and an L-shaped placement plate 221 is fixed to the rear of the left side wall of the fixed mold 201. The placement plate 221 and the fixed mold 201 are fixed by bolts. The rear end of the shaft rod 222 is rotatably connected to the front end of the placement plate 221. The knocking head 224 is fixed to the shaft rod 222 by an elastic rod 225. A wedge block 225a is fixed to the right side of the elastic rod 225. An L-shaped main tooth plate 303 is fixed on the rear side wall of the crossbeam 302. The second driven tooth 223 is coaxially fixed to the rear end of the shaft rod 222. The main tooth plate 303 is connected to the second driven tooth 22 3 phase meshing, when the baffle 301 moves up, the main tooth plate 303 drives the second driven tooth 223 to rotate clockwise and drives the elastic rod 225 and the striking head 224 at the front end to rotate clockwise, when the wedge block 225a rotates to contact the top block 226, the elastic rod 225 will be pushed outward and gradually bent, when the wedge block 225a rotates to separate from the top block 226, the elastic rod 225 rebounds instantly and drives the striking head 224 to hit the fixed mold 201, accelerating the separation of the molding accessories and the fixed mold 201. It should be noted that the fixed mold 201 has a certain heat insulation ability, and the striking structure 220 is made of heat-resistant material to avoid damage to the striking structure 220 when the metal slurry is injected.

[0038] In addition, a connecting rod 212a is fixed to the right side of the top rod 212, and a connecting block 212b is fixed to the front end of the connecting rod 212a. A transposition groove 227 is provided in the middle of the right side wall of the fixed mold 201. The connecting block 212b is slidably connected in the transposition groove 227. The right end face of the connecting block 212b extends out of the corresponding transposition groove 227 and the end face is provided with a top block 226. The left side of the top block 226 is fixedly connected to a secondary gear 229 through a connecting rod. The connecting rod passes through the connecting block 212b and the two are rotatably connected. The middle of the bottom surface of the transposition groove 227 is fixed with a secondary gear meshing with the secondary gear 229. Plate 228, when the push rod 212 is pushed outward, the connecting rod 212a and the connecting block 212b will move forward along the transposition groove 227. When passing the secondary tooth plate 228, the secondary gear 229 drives the push block 226 to rotate 180° so that the inclined surface of the push block 226 faces downward. By rotating the push block 226 180° and changing its position, it is avoided that when the rotation direction of the striking head 224 changes, the push block 226 and the flat surface of the wedge block 225a contact each other, which causes the wedge block 225a to be unable to drive the elastic rod 225 to push outward and bend, thereby causing the entire device to be unusable.

[0039] The present invention also provides a method for continuously demoulding and conveying multi-station automobile die-casting parts, which uses the above-mentioned continuous demoulding and conveying device for multi-station automobile die-casting parts, including the following steps: S1. After the die-casting of the accessory is completed and cooled, the hydraulic press 102 is started to drive the movable die 105 forward. At this time, the piston rod 106 pushes the air inside the U-shaped tube 107 into the bellows 108, pushing the limit block 312 and the mounting plate 311 upward, thereby driving the baffle 301 upward. S2. When the baffle 301 moves upward to block the front opening of the fixed mold 201, the hydraulic press 102 is turned off and the servo motor 202 is started. The driving gear 203 and the first driven gear 204 drive the rotating rod 211 to rotate counterclockwise. When the rotating rod 211 rotates, the push block 219 on the front side of the push rod 217 pushes the movable cylinder 213 to slide forward, driving the ejector rod 212 to eject the molded part outward. At the same time, the baffle 301 is pushed outward along the slide groove 315. At this time, the baffle 301 is in a horizontal state. S3. After the rotating rod 211 rotates 90° counterclockwise, the servo motor 202 is turned off and the hydraulic press 102 is started again to move the movable mold 105 backward for a distance, and then the hydraulic press 102 is turned off. At this time, the piston rod 106 pushes the air bellows 108 inside the U-shaped tube 107 and pulls the limit block 312 and the mounting plate 311 backward, thereby driving the baffle 301 to separate from the front opening of the fixed mold 201. At this time, the molded parts can fall on the conveyor belt 600 and be collected at the right end. Then, the servo motor 202 is started again to rotate the rotating rod 211 90° clockwise to reset. After resetting, the servo motor 202 is started again to drive the movable mold 105 and the fixed mold 201 to close the mold; S4. During the upward movement of the baffle 301, the main tooth plate 303 drives the second driven tooth 223 to rotate clockwise, thereby driving the elastic rod 225 and the striking head 224 at the front end to rotate clockwise. When the wedge block 225a rotates to contact the top block 226, the elastic rod 225 is pushed outward and gradually bends. When the wedge block 225a rotates to separate from the top block 226, the elastic rod 225 instantly rebounds and drives the striking head 224 to hit the fixed mold 201, accelerating the separation of the molding accessory and the fixed mold 201. S5. During the rotation of the rotating rod 211, the top rod 212 pushes outward and drives the connecting rod 212a and the connecting block 212b to move forward along the transposition groove 227. When passing the secondary tooth plate 228, the secondary gear 229 drives the top block 226 to rotate 180° so that the tilted surface of the top block 226 faces downward. During the process of the baffle 301 moving backward and separating from the front opening of the fixed mold 201, the main tooth plate 303 drives the second driven tooth 223 to rotate counterclockwise and drives the elastic rod 225 and the front end knocking head 224 to rotate counterclockwise. When the wedge block 225a rotates to contact the top block 226, the elastic rod 225 will be pushed outward and gradually bent. When the wedge block 225a rotates to separate from the top block 226, the elastic rod 225 rebounds instantly and drives the knocking head 224 to hit the fixed mold 201, further accelerating the separation of the molding accessories and the fixed mold 201.

[0040] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the invention and their practical application, thereby enabling those skilled in the art to make and utilize a variety of exemplary embodiments of the invention and various options and modifications. The scope of the invention is intended to be defined by the description and its equivalents.

Claims

1. A multi-station continuous demoulding and conveying device for automotive die-casting parts, comprising two first side plates at the front, two second side plates at the rear, and a conveyor belt, characterized in that: A plurality of movable mold assemblies are provided between the two first side plates, a fixed mold assembly is provided between the two second side plates, and a flat assembly is provided below the fixed mold assembly; The movable mold assembly includes a hydraulic press, a movable plate, and a plurality of movable molds. The output shaft of the hydraulic press is fixedly connected to the plurality of movable molds through the movable plate. A piston rod is fixed to the left and right edges of the rear side wall of the movable plate. A U-shaped tube is slidably connected to the rear of the piston rod. A bellows is connected to the rear end of the U-shaped tube adjacent to the piston rod. The fixed mold assembly includes a servo motor, an ejection structure and a plurality of fixed molds, and the ejection structure includes a rotating rod, a push rod and a plurality of ejector rods; The horizontal assembly includes several baffles, two left and right mounting structures and two left and right fixed rods. The rear end of the fixed rod is fixedly connected to the outer wall of the rotating rod. The several baffles correspond one-to-one to the positions of several movable molds. The mounting structure includes a mounting plate and a limit block. The limit block is fixed to the outside of the corresponding mounting plate. The limit block is slidably connected to the inner side of the front end of the fixed rod. The top end of the bellows passes through the bottom surface of the fixed rod and is sealed with the bottom surface of the limit block.

2. The multi-station automotive die-casting parts continuous demoulding and conveying device according to claim 1, characterized in that: A fixed plate is fixed between the two first side plates on the front side, the hydraulic press is fixed to the middle of the front side wall of the fixed plate, the front end of the output shaft of the hydraulic press passes through the fixed plate and is fixedly connected to the intermediate plate, the intermediate plate is fixedly connected to the movable plate, several movable molds are regularly fixed on the front side of the movable plate, and the two ends of the movable plate are respectively slidably connected to the first side plates on both sides.

3. The multi-station automotive die-casting parts continuous demoulding and conveying device according to claim 2, characterized in that: The U-shaped tube is fixed to the inner wall of the first side plate on the corresponding side, the bending part of the U-shaped tube is set forward, the piston rod passes through the outer section of the corresponding U-shaped tube, and the bellows is connected to the rear end of the inner section of the corresponding U-shaped tube.

4. The multi-station automotive die-casting parts continuous demoulding and conveying device according to claim 3, characterized in that: The fixing rod is in a horizontal T-shape, and a vertical limit groove is provided in the vertical section of the fixing rod. The limit block is slidably connected in the corresponding limit groove. The limit rod is fixed between the upper and lower side walls of the limit groove. The limit rod passes through the corresponding limit block and the two are slidably connected. A second spring is provided between the top surface of the limit groove and the top surface of the limit block. The connection between the bellows and the bottom surface of the limit block is located on the front side of the limit rod.

5. The multi-station automotive die-casting parts continuous demoulding and conveying device according to claim 4, characterized in that: Several of the baffles are fixedly connected by crossbeams, and sliders are symmetrically fixed on the outer walls of the left and right outermost baffles. The inner wall of the mounting plate is provided with a sliding groove adapted to the slider, and a sliding rod is fixed between the front and rear side walls of the sliding groove. The sliding rod passes through the corresponding slider and the two are slidably connected, and a third spring is provided on the outer cover of the sliding rod located between the rear side wall of the sliding groove and the slider.

6. The multi-station automotive die-casting parts continuous demoulding and conveying device according to claim 5, characterized in that: The two ends of the rotating rod are respectively rotatably connected to the second side plates on both sides, the push rod is coaxially arranged inside the rotating rod, and the two ends of the push rod are respectively fixedly connected to the second side plates on both sides. A plurality of ejection grooves are provided in the rotating rod, and a movable cylinder is slidably connected in the ejection groove. The front ends of the plurality of movable cylinders are fixed in a one-to-one correspondence with the rear ends of the plurality of ejector rods. An elliptical push hole is provided in the middle of the movable cylinder, which passes through the left and right sides. The push rod passes through the push hole and a push block is fixed on the front side of the outer wall corresponding to the position of the push rod and the push hole.

7. The multi-station automotive die-casting parts continuous demoulding and conveying device according to claim 6, characterized in that: A retaining ring is fixed on the rear side of the ejection groove, a first spring is provided between the rear side wall of the retaining ring and the rear end of the movable cylinder, a driving tooth is coaxially fixed to the output shaft of the servo motor, a first driven tooth is coaxially fixed to the right end of the rotating rod, and the driving tooth and the first driven tooth are meshed.

8. The multi-station automotive die-casting parts continuous demoulding and conveying device according to claim 7, characterized in that: A knocking structure is provided in the middle of the right side wall of the fixed mold, and the knocking structure includes a shaft rod, a knocking head, and an L-shaped placement plate is fixed at the rear of the left side wall of the fixed mold. The rear end of the shaft rod is rotatably connected to the front end of the placement plate, and the knocking head is fixed to the shaft rod through an elastic rod. A wedge block is fixed to the right side of the elastic rod, and an L-shaped main tooth plate is fixed on the rear side wall of the crossbeam. A second driven tooth is coaxially fixed to the rear end of the shaft rod, and the main tooth plate is meshed with the second driven tooth.

9. The multi-station automotive die-casting parts continuous demoulding and conveying device according to claim 8, characterized in that: A connecting rod is fixed to the right side of the push rod, and a connecting block is fixed to the front end of the connecting rod. A transposition groove is provided in the middle of the right side wall of the fixed mold, and the connecting block is slidably connected in the transposition groove. The right end face of the connecting block extends out to correspond to the transposition groove and the end face is provided with a push block. The left side of the push block is fixedly connected to the secondary gear through a connecting rod, and the connecting rod passes through the connecting block and the two are rotatably connected. A secondary tooth plate meshing with the secondary gear is fixed in the middle of the bottom surface of the transposition groove.

10. A method for continuously demoulding and conveying multi-station automobile die-casting parts, using the device for continuously demoulding and conveying multi-station automobile die-casting parts according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. After the die-casting of the accessory is completed and cooled, the hydraulic press is started to drive the movable die forward. At this time, the piston rod pushes the air inside the U-shaped tube into the bellows, pushing the limit block and the mounting plate upward, thereby driving the baffle plate upward. S2. When the baffle moves up to block the front opening of the fixed mold, the hydraulic press is turned off and the servo motor is started to drive the rotating rod counterclockwise through the driving gear and the first driven gear. When the rotating rod rotates, the push block on the front side of the push rod pushes the movable cylinder to slide forward, driving the ejector rod to eject the molded part outward. At the same time, the baffle is pushed outward along the slide groove. At this time, the baffle is in a horizontal state. S3. After the rotating rod rotates 90° counterclockwise, the servo motor is turned off and the hydraulic press is started again to move the movable mold backward for a distance. Then the hydraulic press is turned off. At this time, the piston rod pushes the air bellows inside the U-shaped tube, pulling the limit block and the mounting plate backward, thereby driving the baffle to separate from the front opening of the fixed mold. At this time, the molded parts can fall on the conveyor belt and be collected at the right end. Then, the servo motor is started again to rotate the rotating rod 90° clockwise to reset. After reset, the servo motor is started again to drive the movable mold and the fixed mold to close the mold. S4. During the upward movement of the baffle, the main tooth plate drives the second driven tooth to rotate clockwise, which in turn drives the spring rod and the striking head at the front end to rotate clockwise. When the wedge block rotates to contact the top block, the spring rod is pushed outward and gradually bends. When the wedge block rotates to separate from the top block, the spring rod rebounds instantly and drives the striking head to hit the fixed mold, accelerating the separation of the molding accessory and the fixed mold. S5. During the rotation of the rotating rod, the ejector rod pushes outward and drives the connecting rod and the connecting block to move forward along the transposition groove. When passing the secondary tooth plate, the secondary gear drives the ejector block to rotate 180° so that the inclined surface of the ejector block faces downward. During the process of the baffle moving backward and separating from the front opening of the fixed mold, the main tooth plate drives the second driven tooth to rotate counterclockwise and drives the elastic rod and the striking head at the front end to rotate counterclockwise. When the wedge block rotates to contact the ejector block, the elastic rod will be pushed outward and gradually bent. When the wedge block rotates to separate from the ejector block, the elastic rod rebounds instantly and drives the striking head to hit the fixed mold, further accelerating the separation of the molding accessories and the fixed mold.

Images