Core-jacking clamp type mold-closing integrated core-making device

Abstract

The invention discloses a core ejection clamp type mold closing integrated core manufacturing device which comprises first toggle rods, swing rods, an ejection mechanism and an ejection mechanism, and when the two sets of first toggle rods and swing rods drive a second push plate to move upwards through a driving unit, the ejection mechanism is used for opening a core body through two opening and closing mold plates and ejecting the opened core body out at the same time. When the two first toggle rods and the two swing rods drive the second push plate to move downwards through the driving unit, the second toggle rods drive the connecting blocks so that the opening and closing mold plate can conduct mold closing sand blasting forming on the sand core with the labor-saving and stable effects. The two steps of mold opening and core ejection are combined into one, manual operation is effectively reduced, the core making process is simplified, the traditional core making process needs to open the mold firstly, then manually take out the core body and then carry out the next operation, the steps are tedious, and the efficiency is low, the core body is ejected out while the mold is opened through the ejection mechanism, and automatic operation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of core-making mold clamping, and specifically to a core-making device integrating core ejection pliers and mold clamping. Background Art

[0002] The core-making mold clamping device usually consists of a fixed template, a movable template, tie rods, an oil cylinder, toggle levers, etc., and has sufficient mold clamping force, stiffness, template area and stroke to meet the installation requirements of forming molds with different shapes and sizes. This type of equipment is used to manufacture sand cores and is suitable for core-making with phenolic resin coated sand. Its operation is controlled by a PLC and can automatically complete processes such as mold clamping, sand shooting, and curing. The core shooter can be fully pneumatic, hydraulically driven, or driven by a combination of pneumatic and hydraulic.

[0003] For the above-mentioned mold clamping core-making device, although it combines the precise control of the mold clamping device and the automated core-making ability of the core shooter, aiming to improve production efficiency, reduce manual operation, enhance the quality of products, and adapt to various different plastic molding requirements, during the mold opening process of the formed core, the core cannot be ejected from the bottom of the core mold. Therefore, the mold opening and demolding of the core need to be divided into two steps successively, thus significantly reducing the core-making efficiency. Therefore, it is necessary to provide a core-making device integrating core ejection pliers and mold clamping to solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a core-making device integrating core ejection pliers and mold clamping to solve the problem raised in the above background art that in the mold opening process of the existing core-making mold clamping device, the core cannot be ejected from the bottom of the core mold, so the mold opening and demolding of the core need to be divided into two steps successively, thus significantly reducing the core-making efficiency. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem of the overly single solution of the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A core-making device integrating core ejection pliers and mold clamping, including a first toggle lever, a swing rod, and an ejection mechanism. When the two groups of the first toggle levers and the swing rod drive the second push plate to move upward through a driving unit, it is used to open the mold of the two split molds for the core and at the same time is used to eject the core after mold opening by the ejection mechanism; When the two groups of the first toggle levers and the swing rod drive the second push plate to move downward through a driving unit, it is used for the second toggle lever to drive the connecting block so that the split molds perform mold clamping and sand blasting forming on the sand core with a labor-saving and stable effect.

[0006] In a further embodiment, it further includes a mold clamping and splitting base, a first toggle lever, and a swing rod. The first toggle lever and the swing rod are movably connected through a hinge rod. The two groups of the first toggle levers and the swing rod are respectively movably connected to both sides of the mold clamping and splitting base through hinge seats.

[0007] In a further embodiment, when the device is used for large equipment, the opening and closing template and the limiting template form a sliding structure along the horizontal direction through a guide sleeve and a guide post; And / or, when the device is used for small equipment, the opening and closing template and the connecting block are slidably matched with the opening and closing die base along the horizontal direction through a guide rail.

[0008] In a further embodiment, the swing rod is movably connected to the opening and closing die base through a hinge seat, and the swing rod is movably connected to the connecting block through the second toggle lever. The connecting block is horizontally provided with an opening and closing template.

[0009] In a further embodiment, the inner ends of the two first toggle levers are movably hinged to both ends of the second push plate through a hinge rod, and the second push plate makes a lifting movement along the vertical direction with the lower limiting plate as a reference through a guide rod.

[0010] In a further embodiment, the ejection mechanism includes a push rod installed above the second push plate, and the push rod, with the upper limiting plate as a reference through a driving unit, pushes the first push plate to make a lifting movement along the vertical direction. A plurality of springs are installed on one side of the upper limiting plate facing the second push plate, and a plurality of ejector rods are connected to the first push plate.

[0011] In a further embodiment, the push rod and the upper limiting plate form a sliding structure.

[0012] In a further embodiment, the driving unit includes a hydraulic cylinder, a cylinder and an electric motor.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by combining the two steps of mold opening and core ejection into one, manual operation is effectively reduced and the core making process is simplified. In the traditional core making process, it is necessary to first open the mold, then manually take out the core body, and then perform the next operation. The steps are cumbersome and the efficiency is low. Compared with the existing technology, in the present application, through the ejection mechanism, the core body is ejected while the mold is opened, realizing automated operation. This not only shortens the production cycle, improves the production efficiency, but also reduces the labor intensity of workers and improves the working environment. In the present invention, an ejection mechanism is provided, and the device also adopts a guiding structure. Through the guide rod, stable support and guidance are provided for the push rod and the first push plate of the ejection mechanism, ensuring that they can move along a predetermined trajectory and avoiding damage to the core body. Through the synergistic effect of the guiding structure and the limiting structure, problems such as shaking, offset and overshoot are effectively avoided, thereby ensuring the stability and accuracy of the core making process and ensuring the quality and consistency of the core body. In the present invention, when manufacturing large equipment, the connecting block on one side of the opening and closing template can be supported and guided on the limiting template through the guide posts and guide sleeves. This setting can effectively improve the stability of large equipment on the one hand, and on the other hand, it can also improve the manufacturing precision of large equipment when the stability is improved. When the device is used for small equipment, the connecting block on one side of the opening and closing template only needs to be supported and guided by the chute at the bottom and the guide rail to perform the opening and closing movement of the opening and closing die seat. Compared with the existing technology, the present device can be used not only for large equipment but also for small equipment. 4. The present invention adopts a servo-electric control method to achieve two-way mold opening, which makes it convenient for the manufactured sand core to be synchronously grabbed by the manipulator, facilitating big data upload and processing, full-automatic processing, and subsequent maintenance. Moreover, the data is convenient to be uploaded to the Internet of Things for full-automatic management, and there is a complete data feedback for information management. Repairs can be remotely analyzed and processed. It cooperates with other components of the core-making machine, such as manipulator synchronization, to facilitate seamless docking of the production rhythm; makes the toggle lever basically horizontal, ensuring within the range of 0 to 10°, and there is a complete data feedback for information management; repairs can be remotely analyzed and processed; it cooperates with other components of the core-making machine, such as manipulator synchronization, to facilitate seamless docking of the production rhythm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a preferred embodiment of the core-pulling pliers type mold-closing integrated core-making device provided by the present invention; Figure 2 is Figure 1 the schematic front view structure shown; Figure 3 is Figure 2 the schematic structure diagram of mold opening and core pulling shown; Figure 4 is the schematic structure diagram of Embodiment 2; Figure 5 is the schematic structure diagram of the device with a cylinder as the driving method; Figure 6 is the schematic structure diagram of the device with a servo motor and a lead screw as the driving method.

[0015] In the figure: 101, opening and closing die seat; 102, guide rail; 201, limiting template; 301, guide sleeve; 401, guide post; 501, first toggle lever; 502, swing rod; 503, hinge seat; 504, second toggle lever; 505, connecting block; 506, opening and closing template; 601, push rod; 602, upper limit plate; 602a, spring; 603, first push plate; 604, ejector rod; 701, lower limit plate; 702, guide rod; 801, second push plate; 901, driving unit. DETAILED DESCRIPTION OF THE INVENTION

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1-6 , an embodiment provided by the present invention: a core-making device integrating core-pulling pliers and mold-closing, including a first toggle link 501, a swing link 502 and an ejection mechanism. When two groups of first toggle links 501 and swing links 502 drive the second push plate 801 to move upward through the driving unit 901, it is used to open the mold of the two split mold plates 506 for the core body, and at the same time, an ejection mechanism for ejecting the core body after mold opening; when two groups of first toggle links 501 and swing links 502 drive the second push plate 801 to move downward through the driving unit 901, it is used for the second toggle link 504 to drive the connecting block 505 to enable the split mold plate 506 to perform mold-closing sandblasting forming on the sand core with labor-saving and stable effects.

[0018] Embodiment 1 Please refer to Figures 1-3 and Figures 5-6 , further including a mold-opening and -closing base 101, a first toggle link 501 and a swing link 502. The first toggle link 501 and the swing link 502 are movably connected through a hinge rod. Two groups of first toggle links 501 and swing links 502 are respectively movably connected to both sides of the mold-opening and -closing base 101 through hinge seats 503. When the device is used for large equipment, the split mold plate 506 and the limit mold plate 201 form a sliding structure along the horizontal direction through a guide sleeve 301 and a guide post 401; the swing link 502 is movably connected to the mold-opening and -closing base 101 through a hinge seat 503, and the swing link 502 is movably connected to the connecting block 505 through a second toggle link 504. The connecting block 505 is horizontally provided with a split mold plate 506. The inner ends of the two first toggle links 501 are movably hinged to both ends of the second push plate 801 through a hinge rod, and the second push plate 801 makes a lifting movement along the vertical direction with the lower limit plate 701 as a reference through a guide rod 702. The ejection mechanism includes a push rod 601 installed above the second push plate 801, and the push rod 601, with the upper limit plate 602 as a reference through the driving unit 901, pushes the first push plate 603 to make a lifting movement along the vertical direction. A plurality of springs 602a are installed on one side of the upper limit plate 602 facing the second push plate 801. A plurality of ejector rods 604 are connected to the first push plate 603. The push rod 601 and the upper limit plate 602 form a sliding structure. The driving unit 901 includes a hydraulic cylinder 901a, a pneumatic cylinder 901b and an electric motor 901c; The first driving method: When manufacturing the core body, first start the hydraulic cylinder 901a through the control button, and push the second push plate 801 downward through the piston above the hydraulic cylinder 901a; The second driving method: Start the cylinder 901b through the control button, and push the second push plate 801 downward through the piston above the cylinder 901b; The third driving method: The electric motor 901c includes a servo motor and a lead screw. Start the servo motor through the control button and drive the lead screw to rotate. Under the action of the rotation of the lead screw, the second push plate 801 can be driven to rotate; Through any one of the above driving methods, with the lower limit plate 701 as the reference and the guide rod 702 as the guide, drive the first toggle link 501 hinged on both sides to move downward, thereby driving the upper end of the swing rod 502. With the hinge seat 503 above the mold clamping base 101 as the base point, and in cooperation with the second toggle link 504 and the connecting block 505, drive the two mold clamping plates 506 to close the mold. When manufacturing large equipment, the connecting block 505 on one side of the mold clamping plate 506 can be supported and guided on the limit template 201 through the guide post 401 in cooperation with the guide sleeve 301. This setting can effectively improve the stability of large equipment on the one hand. On the other hand, when the stability is improved, the manufacturing accuracy of large equipment can also be improved. When the core is formed, at this time, it is necessary to open the mold clamping base 101 to both sides and eject the core at the same time. The specific operation method is described as follows: Start the driving unit 901 through the control button, drive the second push plate 801 to move upward in cooperation with the guide rod 702 through the piston above the driving unit 901, and drive the first toggle links 501 on both sides to move upward. In this way, the upper ends of the swing rods 502 on both sides rotate around the hinge seat 503, and in cooperation with the second toggle link 504 and the connecting block 505, drive the mold clamping plates 506 to open to both sides, thereby realizing the mold opening work for the formed core. When the second push plate 801 moves upward, it can also drive the push rod 601, the first push plate 603 and the ejector rod 604 to move upward, so as to eject the formed core upward.

[0019] Embodiment 2 Please refer to Figure 4 , different from Embodiment 1: When the device is used for small equipment, the mold clamping plates 506 and the connecting block 505 are slidably matched with the mold clamping base 101 along the horizontal direction through the guide rail 102; The connecting block 505 on one side of the mold clamping plate 506 only needs to use the chute at the bottom and the guide rail 102 as support and guidance to perform the opening and closing movement of the mold clamping base 101.

[0020] Working principle: As Figures 1-3 and Figures 5-6As shown in the figure, when manufacturing the core body, first start the driving unit 901 through the control button. Push the second push plate 801 downward by the piston above the driving unit 901. Taking the lower limit plate 701 as the reference and the guide rod 702 as the guide, drive the first toggle link 501 hinged on both sides to move downward, thereby driving the upper end of the swing rod 502. Taking the hinge seat 503 above the mold clamping and opening seat 101 as the base point, and cooperating with the second toggle link 504 and the connecting block 505 to drive the two mold clamping and opening templates 506 to close the mold. When manufacturing large equipment, the connecting block 505 on one side of the mold clamping and opening template 506 can be supported and guided on the limit template 201 through the guide post 401 and the guide sleeve 301. This setting can effectively improve the stability of large equipment on the one hand, and on the other hand, it can also improve the manufacturing precision of large equipment when the stability is improved; As Figure 4 shown in the figure, when manufacturing small equipment, the connecting block 505 on one side of the mold clamping and opening template 506 only needs to use the chute at the bottom and the guide rail 102 as support and guidance to perform the opening and closing movement of the mold clamping and opening seat 101.

[0021] When the core body is formed, it is necessary to open the mold clamping and opening seat 101 to both sides and at the same time eject the core body. The specific operation method is described as follows: Start the driving unit 901 through the control button. Drive the second push plate 801 to move upward in cooperation with the guide rod 702 by the piston above the driving unit 901, and drive the first toggle links 501 on both sides to move upward. In this way, the upper ends of the swing rods 502 on both sides rotate around the hinge seat 503, and cooperate with the second toggle link 504 and the connecting block 505 to drive the mold clamping and opening templates 506 to open to both sides, thereby realizing the mold opening work for the formed core body.

[0022] When the second push plate 801 moves upward, it can also drive the push rod 601, the first push plate 603 and the ejector rod 604 to move upward, so as to eject the formed core body upward.

[0023] In summary, this device can not only realize the opening and closing of the mold during the forming process of the core body, but also eject the formed core body at the same time when the mold is opened. And this device can be used for both large equipment and small equipment.

[0024] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

Claims

1. A core-cutter type mold-clamping integrated core-making device, comprising an ejection mechanism and two sets of first elbows (501) and rocker arms (502), characterized in that: When the two sets of the first elbow rods (501) and the swing rods (502) drive the second push plate (801) to move upwards through the driving unit (901), the two opening and closing templates (506) open the mold of the core body, and simultaneously eject the opened core body; When the two groups of the first elbow rods (501) and the swing rods (502) drive the second push plate (801) to move downward via the driving unit (901), the second elbow rod (504) drives the connecting block (505) to allow the opening and closing template (506) to perform mold closing and sandblasting on the sand core, ensuring that the elbow rod is substantially horizontal and the angle is controlled within the range of 0 to 10 degrees.

2. A top core clamp type mold clamping integrated core making device according to claim 1, characterized in that: The device further comprises an opening and closing mold base (101), the first elbow rod (501) and the swing rod (502) being movably connected via a hinge rod, and two groups of the first elbow rod (501) and the swing rod (502) being movably connected to two sides of the opening and closing mold base (101) via a hinge base (503).

3. A top core clamp type mold clamping integrated core making device according to claim 2, characterized in that: When the device is used for large equipment, the opening and closing template (506) forms a sliding structure with the limiting template (201) along the horizontal direction through the guide sleeve (301) and the guide column (401); And / or, when the device is used for small equipment, the opening and closing mold plate (506) and the connecting block (505) slide in cooperation with the opening and closing mold base (101) in the horizontal direction via the guide rail (102).

4. A top core clamp type mold clamping integrated core making device according to claim 2, characterized in that: The swing rod (502) is movably connected to the opening and closing mold base (101) via a hinged seat (503), and the swing rod (502) is movably connected to the connecting block (505) via the second elbow rod (504), and the connecting block (505) is installed with an opening and closing mold plate (506) in the horizontal direction.

5. The core-clamp type mold-clamping integrated core-making device according to claim 1, characterized in that: The inner ends of the two first elbow rods (501) are movably hinged to the two ends of the second push plate (801) through a hinge rod, and the second push plate (801) is lifted and lowered in a vertical direction with the lower limit plate (701) as a reference through a guide rod (702).

6. The core-clamp type mold-clamping integrated core-making device according to claim 1, characterized in that: The ejection mechanism comprises a push rod (601) installed above the second push plate (801), and the push rod (601) pushes the first push plate (603) to move up and down in a vertical direction with the upper limit plate (602) as a reference through a driving unit (901), and a plurality of springs (602a) are installed on the side of the upper limit plate (602) facing the second push plate (801), and a plurality of ejector rods (604) are connected to the first push plate (603).

7. A top core clamp type mold clamping integrated core making device according to claim 6, characterized in that: The push rod (601) and the upper limit plate (602) form a sliding structure.

8. The core-clamp type mold-clamping integrated core-making device according to claim 1, characterized in that: The driving unit (901) comprises a hydraulic cylinder (901a), an air cylinder (901b) and an electric cylinder (901c).

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