Automatic hydraulic mold opening and closing casting machine

Abstract

The utility model relates to the technical field of pouring, and discloses an automatic hydraulic mold opening and closing pouring machine which comprises a hydraulic station, a base plate, a left mold opening and closing mechanism, a right mold opening and closing mechanism and an upper core pulling structure, the left mold opening and closing mechanism and the right mold opening and closing mechanism are symmetrically arranged on the base plate; the upper core pulling structure is arranged above the left mold opening and closing mechanism and the right mold opening and closing mechanism; the left mold opening and closing mechanism comprises a left mold, a left mold opening and closing oil cylinder, a left vertical seat and a left mold limiting mechanism arranged on the left vertical seat; the right mold opening and closing mechanism comprises a right mold, a right mold opening and closing oil cylinder, a right vertical seat and a right mold limiting mechanism arranged on the right vertical seat; the upper core-pulling structure comprises a stand column, a top plate, a mold core rod and a mold core oil cylinder; and the left mold opening and closing oil cylinder, the right mold opening and closing oil cylinder and the mold core oil cylinder are all connected with a hydraulic station. According to the utility model, the automatic mold opening / closing of the pouring mold and the automatic demolding of a formed workpiece can be realized, so that the pouring processing efficiency is favorably improved, the quality of a cast product is stabilized, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to an automatic hydraulic mold opening and closing casting machine. Background Art

[0002] Pouring (also known as casting or pouring) is a metalworking process that involves pouring molten metal or other materials into a prepared mold to cast and shape metal parts. This method is widely used in the manufacture of various metal parts, including but not limited to automotive parts, mechanical components, and metal parts used in everyday products. Pouring can be performed using various techniques and methods, such as gravity pouring, low-pressure pouring, and high-pressure die casting.

[0003] A pouring machine is a machine used to perform pouring work. It can complete the operation of injecting molten material into the mold in a more precise and efficient manner. Pouring machines can be divided into different types according to their working principles and uses, such as tilting pouring machines, pneumatic pouring machines, bottom pouring machines, etc. For example, the patent with publication number CN118492351A discloses a tilting double molten iron outlet automatic pouring machine, and the patent with publication number CN111299563B discloses a new bottom pouring machine for casting. In these patents, the improvements to the pouring machine structure are all focused on the optimization of the pouring action structure to improve processing efficiency and quality.

[0004] However, the preparation of the mold before pouring, as well as the control of the solidification time and demolding of the molded workpiece after pouring, all have a direct impact on casting efficiency and quality. For example, cumbersome or slow mold closing operations can reduce overall processing efficiency, while improper solidification time control can easily cause workpiece deformation. Few solutions have optimized the structure of these components. Utility Model Content

[0005] The utility model aims to provide an automatic hydraulic mold opening and closing pouring machine, which can realize automatic opening / closing of pouring molds and automatic demoulding of formed workpieces, thereby helping to improve pouring processing efficiency, stabilize the quality of cast products, and reduce labor intensity.

[0006] The basic solution provided by the utility model is: an automatic hydraulic mold opening and closing casting machine, comprising a hydraulic station, a base plate, a left mold opening and closing mechanism, a right mold opening and closing mechanism, and an upper core pulling structure; the left mold opening and closing mechanism and the right mold opening and closing mechanism are symmetrically arranged on the base plate, and are respectively arranged on the left and right parts of the base plate; the upper core pulling structure is arranged above the left mold opening and closing mechanism and the right mold opening and closing mechanism;

[0007] The left mold opening and closing mechanism includes a left mold, a left mold opening and closing oil cylinder, a left stand, and a left mold limiting mechanism provided on the left stand; the right mold opening and closing mechanism includes a right mold, a right mold opening and closing oil cylinder, a right stand, and a right mold limiting mechanism provided on the right stand; the left mold and the right mold are spaced apart by a preset distance and are arranged opposite to each other; the piston rods of the left mold opening and closing oil cylinder and the piston rods of the right mold opening and closing oil cylinder are connected to the left mold and the right mold, respectively;

[0008] The upper core-pulling structure includes a column, a top plate, a mold core rod and a mold core cylinder; the columns include a left column and a right column, and are respectively arranged on the top surfaces of the left seat and the right seat; the top plate is supported by the left column and the right column; a center hole is provided on the top plate, and the piston rod of the mold core cylinder passes through the center hole and is connected to the mold core rod; the left opening and closing mold cylinder, the right opening and closing mold cylinder and the mold core cylinder are all connected to the hydraulic station.

[0009] The working principle and advantages of the utility model are as follows: first, the core cylinder is controlled to extend its piston rod, and the mold core rod connected to the piston rod moves downward, so that the upper core pulling mold is in place. Then the right mold opening and closing cylinder is controlled to extend its piston rod, and the right mold connected to the piston rod moves left, so that the right mold is in place; then the left mold opening and closing cylinder is controlled to extend its piston rod, and the left mold connected to the piston rod moves right, so that the left mold is in place; then molten metal is injected into the gap between the left and right molds to fill the workpiece. After the molten metal solidifies, the core cylinder is controlled to slightly shorten its piston rod first, so that the mold core rod moves slightly upward to loosen the mold core rod; then the right mold opening and closing cylinder and the left mold opening and closing cylinder are controlled to shorten their piston rods, and drive the right mold to move right and the left mold to move left, and then the core cylinder is controlled to further shorten its piston rod, and then the mold core rod is pulled out to obtain a formed workpiece.

[0010] The utility model discloses an automatic hydraulic mold opening and closing pouring machine with a simple structure. It uses an oil cylinder to drive the mold movement, which can realize the automatic opening and closing of the pouring mold and the automatic demolding of the formed workpiece, which helps to improve the efficiency of the pouring process and reduce labor intensity. Secondly, the opening and closing force of the left and right molds under hydraulic drive is relatively stable. In addition, combined with the control of the piston rod movement of each oil cylinder (such as the time and stroke of the piston rod extension and retraction), it can achieve precise control of the solidification time of the molten material after pouring, thereby stabilizing the quality of the cast products and achieving a higher product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of the overall structure of a first embodiment of an automatic hydraulic mold opening and closing casting machine of the utility model;

[0012] Figure 2 This is a schematic diagram of the overall structure of a first embodiment of an automatic hydraulic mold opening and closing casting machine of the utility model;

[0013] Figure 3 This is the AA cross-sectional view in the overall structural division diagram of the first embodiment of an automatic hydraulic mold opening and closing casting machine of the present utility model;

[0014] Figure 4 This is a top view of the overall structure of Example 1 of an automatic hydraulic mold opening and closing casting machine of the present utility model. DETAILED DESCRIPTION

[0015] The following is a further detailed description through specific implementation methods:

[0016] The symbols in the drawings of the specification include: base plate 1, slot 101, base hole 102, left mold 2, left pressure plate 3, left stand 4, left mold opening and closing cylinder 5, left mold limiting mechanism 6; right mold 7, right pressure plate 8, right stand 9, right mold opening and closing cylinder 10, right mold limiting mechanism 11; limiting ring 12, piston rod 13;

[0017] The mold core stabilizing mechanism 14 , the first stabilizing plate 15 , the second stabilizing plate 16 , the column 17 , the top plate 18 , the mold core rod 19 , and the mold core cylinder 20 .

[0018] Example 1

[0019] The embodiment is basically as shown in the attached Figure 1 As shown: an automatic hydraulic mold opening and closing casting machine, including a hydraulic station, a base plate 1, a left mold 2 opening and closing mechanism, a right mold 7 opening and closing mechanism and an upper core pulling structure. Specifically, as Figure 2 As shown, the base plate 1 corresponds to area I, the opening and closing mechanism of the right mold 7 corresponds to area II, the upper core-pulling structure corresponds to area III, and the opening and closing mechanism of the left mold 2 corresponds to area IV.

[0020] like Figure 3 and Figure 4 As shown, the left mold 2 opening and closing mechanism and the right mold 7 opening and closing mechanism are symmetrically arranged on the base plate 1, and are respectively arranged on the left and right parts of the base plate 1; the upper core pulling structure is arranged above the left mold 2 opening and closing mechanism and the right mold 7 opening and closing mechanism. Slots 101 are provided on all four sides of the base plate 1. Specifically, one slot 101 is provided on the left and right sides of the base plate 1, and two slots 101 are provided on the upper and lower sides of the base plate 1. The design of multiple slots 101 can reduce the weight of the base plate 1 to achieve lightweighting of the base plate 1 itself. In addition, a plurality of base holes 102 are also provided on the base plate 1 near its four sides. In this embodiment, as shown Figure 3 As shown, there are a total of 10 base holes 102, of which 2 base holes 102 are respectively provided in the ungrooved areas on the left and right sides of the substrate 1, and 3 base holes 102 are respectively provided in the ungrooved areas on the upper and lower sides of the substrate 1; the base holes 102 are used to connect the substrate feet to fix the position of the substrate 1 and help improve the overall stability of the casting machine.

[0021] The opening and closing mechanism of the left mold 2 includes the left mold 2, the left pressure plate 3, the left stand 4, the left mold opening and closing cylinder 5, and a left mold limiting mechanism 6 disposed on the left stand 4. The opening and closing mechanism of the right mold 7 includes the right mold 7, the right pressure plate 8, the right stand 9, the right mold opening and closing cylinder 10, and a right mold limiting mechanism 11 disposed on the right stand 9. The piston rod 13 of the left mold opening and closing cylinder 5 and the piston rod 13 of the right mold opening and closing cylinder 10 are connected to the left mold 2 and the right mold 7, respectively. The left mold 2 and the right mold 7 are separated by a preset distance and arranged opposite each other. In specific applications, the preset distance and the stroke of the piston rod 13 are set according to the size of the workpiece to be molded.

[0022] In this embodiment, the workpiece being processed is a motorcycle shock absorber accessory, specifically an aluminum cylinder. This workpiece is one of the key components of the motorcycle suspension system and requires airtightness and strength during processing, and the casting surface must be free of slag holes and pinholes. The mating surfaces of the left mold 2 and the right mold 7 are designed according to the outer structure of the aluminum cylinder, such as Figure 3 The shape structure of the subsequent mold core rod 19 is also designed according to the outer structure of the aluminum cylinder.

[0023] Specifically, a first positioning hole is defined in the left stand 4, and a second positioning hole is defined in the right stand 9. The axes of the first and second positioning holes are parallel to the horizontal plane. The piston rods 13 of the left and right mold opening and closing cylinders 5 and 10 respectively pass through the first and second positioning holes.

[0024] The end of the piston rod 13 of the left mold opening and closing cylinder 5 is connected to the left side of the left pressure plate 3, and the right side of the left pressure plate 3 is fixedly connected to the left side of the left mold 2; the end of the piston rod 13 of the right mold opening and closing cylinder 10 is connected to the right side of the right pressure plate 8, and the left side of the right pressure plate 8 is fixedly connected to the right side of the right mold 7. In addition, limit holes are provided on the upper parts of the left pressure plate 3 and the right pressure plate 8. In this embodiment, the left mold limit mechanism 6 and the right mold limit mechanism 11 are both limit screws, and the limit ring 12 is installed on the limit screw, and the outer diameter of the limit ring 12 is larger than the diameter of the limit hole. The left mold limit mechanism 6 is fastened to the left pressure plate 3 through the limit hole by a nut or the like; the right mold limit mechanism 11 is fastened to the right pressure plate 8 through the limit hole by a nut or the like.

[0025] By providing the left and right pressure plates 3 and 8, the contact area between the piston rod 13 and the left and right molds 2 and 7 can be increased, resulting in better force transmission and more efficient and stable mold opening and closing operations. Furthermore, the limiting mechanisms (left mold limiting mechanism 6 and right mold limiting mechanism 11) are also connected to the pressure plates (left and right pressure plates 3 and 8). The limiting ring 12 effectively limits the travel of the piston rod 13, preventing excessive compression of the mold, which could damage the mold or cause inaccurate workpiece dimensions.

[0026] The upper core-pulling structure includes a column 17 , a top plate 18 , a mold core rod 19 , a mold core cylinder 20 and a mold core stabilizing mechanism 14 .

[0027] The columns 17 include a left column 17 and a right column 17, which are respectively mounted on the top surfaces of the left stand 4 and the right stand 9. Specifically, in this embodiment, fixing holes are symmetrically provided on the left and right portions of the top plate 18. Taking the left column 17 as an example, one end of the left column 17 is fixedly connected to the top surface of the left stand 4, while the other end passes through the fixing hole on the right portion of the top plate 18 and is securely connected to the top plate 18 using a nut or the like. The right column 17 is connected in a similar manner to the left column 17. The top plate 18 is supported by the left and right columns 17.

[0028] A center hole is provided on the top plate 18, and the piston rod 13 of the core oil cylinder 20 passes through the center hole and is connected to the mold core rod 19; the left opening and closing mold oil cylinder 5, the right opening and closing mold oil cylinder 10 and the core oil cylinder 20 are all connected to the hydraulic station.

[0029] Specifically, the core stabilization mechanism 14 includes a first stabilization plate 15 and a second stabilization plate 16 of the same shape; the center of the first stabilization plate 15 and the second stabilization plate 16 are provided with a first connecting hole for the piston rod 13 of the core cylinder 20 to pass through, and a second connecting hole and a third connecting hole are symmetrically arranged on the left and right sides of the first connecting hole.

[0030] The top plate 18 is also provided with a fourth and a fifth connecting hole; the spacing between the fourth and fifth connecting holes is equal to the spacing between the second and third connecting holes. The first stabilizing plate 15 is located above the top plate 18, and the second stabilizing plate 16 is located below the top plate 18. The first and second stabilizing plates 15, 16 are connected by bolts. The cylinder body of the core cylinder 20 is mounted on the first stabilizing plate 15. The core stabilizing mechanism 14 assists in stabilizing the mold core rod 19, ensuring its stable movement during the core pulling process, thereby improving demolding quality.

[0031] In a specific application, first, the core cylinder 20 is controlled to extend its piston rod 13, which moves the mold core rod 19 connected to the piston rod 13 downward, allowing the upper core to close the mold. Then, the right mold opening and closing cylinder 10 is controlled to extend its piston rod 13, which moves the right mold 7 connected to the piston rod 13 to the left, allowing the right mold 7 to close the mold. Then, the left mold opening and closing cylinder 5 is controlled to extend its piston rod 13, which moves the left mold 2 connected to the piston rod 13 to the right, allowing the left mold 2 to close the mold. Then, molten metal is injected into the gap between the left mold 2 and the right mold 7 to fill the workpiece. After the molten metal solidifies, the core cylinder 20 is controlled to first slightly shorten its piston rod 13, so that the mold core rod 19 moves slightly upward to loosen the mold core rod 19; then the right opening and closing mold cylinder 10 and the left opening and closing mold cylinder 5 are controlled to shorten their piston rods 13, and drive the right mold 7 to move right and the left mold 2 to move left, and then the core cylinder 20 is controlled to further shorten its piston rod 13, and then the mold core rod 19 is pulled out to obtain a formed workpiece.

[0032] This embodiment provides an automatic hydraulic mold opening and closing pouring machine capable of automatically opening and closing the pouring mold and automatically demolding the formed workpiece, helping to improve pouring process efficiency, stabilize cast product quality, and reduce labor intensity. Furthermore, combined with control over the piston rod movement of each oil cylinder (such as the time and stroke of piston rod extension and retraction), precise control of the solidification time of the molten material after pouring can be achieved, helping to achieve a higher product qualification rate.

[0033] Example 2

[0034] An automatic hydraulic mold opening and closing pouring machine, based on the first embodiment, further includes a control cabinet; the control cabinet is connected to the hydraulic station. In this embodiment, the control cabinet is a conventional hydraulic cylinder control cabinet, which controls the movement, speed, and pressure of each cylinder (left mold opening and closing cylinder 5, right mold opening and closing cylinder 10, and core cylinder 20) through the hydraulic station.

[0035] Preferably, the control cabinet may also be integrated with a controller, such as a single chip microcomputer, to set the sequence and timing of each cylinder's action through PLC programming to achieve higher-level automated control. This part of the control content is completed using existing technology.

[0036] The automatic hydraulic mold opening and closing casting machine provided in this embodiment can further improve the degree of automation of the device and has a higher degree of intelligence compared to the first embodiment.

[0037] The above description is merely an embodiment of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. A person of ordinary skill in the art is aware of all common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, is able to obtain all existing technologies in the field, and has the ability to apply conventional experimental means before that date. A person of ordinary skill in the art can, under the guidance of this application, improve and implement the present scheme in combination with his or her own abilities. Some typical known structures or methods should not become an obstacle for a person of ordinary skill in the art to implement the present application. It should be pointed out that a person of ordinary skill in the art can make several variations and improvements without departing from the structure of the present invention. These should also be considered as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. An automatic hydraulic mold opening and closing casting machine, characterized in that: The machine comprises a hydraulic station, a base plate, a left mold opening and closing mechanism, a right mold opening and closing mechanism, and an upper core-pulling structure; the left mold opening and closing mechanism and the right mold opening and closing mechanism are symmetrically arranged on the base plate, and are respectively arranged on the left and right parts of the base plate; the upper core-pulling structure is arranged above the left mold opening and closing mechanism and the right mold opening and closing mechanism; The left mold opening and closing mechanism includes a left mold, a left mold opening and closing oil cylinder, a left stand, and a left mold limiting mechanism provided on the left stand; the right mold opening and closing mechanism includes a right mold, a right mold opening and closing oil cylinder, a right stand, and a right mold limiting mechanism provided on the right stand; the left mold and the right mold are spaced apart by a preset distance and are arranged opposite to each other; the piston rods of the left mold opening and closing oil cylinder and the piston rods of the right mold opening and closing oil cylinder are connected to the left mold and the right mold, respectively; The upper core-pulling structure includes a column, a top plate, a mold core rod and a mold core cylinder; the columns include a left column and a right column, and are respectively arranged on the top surfaces of the left seat and the right seat; the top plate is supported by the left column and the right column; a center hole is provided on the top plate, and the piston rod of the mold core cylinder passes through the center hole and is connected to the mold core rod; the left opening and closing mold cylinder, the right opening and closing mold cylinder and the mold core cylinder are all connected to the hydraulic station.

2. An automatic hydraulic mold opening and closing casting machine according to claim 1, characterized in that: The upper core-pulling structure also includes a core stabilizing mechanism; the core stabilizing mechanism includes a first stabilizing plate and a second stabilizing plate of the same shape; the center of the first stabilizing plate and the second stabilizing plate are both provided with a first connecting hole for the piston rod of the core cylinder to pass through, as well as a second connecting hole and a third connecting hole symmetrically arranged on the left and right sides of the first connecting hole.

3. The automatic hydraulic mold opening and closing casting machine according to claim 2, characterized in that: The top plate is also provided with a fourth connecting hole and a fifth connecting hole; the interval between the fourth connecting hole and the fifth connecting hole is equal to the interval between the second connecting hole and the third connecting hole; the first stabilizing plate is arranged above the top plate, and the second stabilizing plate is arranged below the top plate; the first stabilizing plate and the second stabilizing plate are connected by bolts.

4. The automatic hydraulic mold opening and closing casting machine according to claim 1, characterized in that: The left mold opening and closing mechanism also includes a left pressure plate; the end of the piston rod of the left mold opening and closing cylinder is connected to the left side of the left pressure plate, and the right side of the left pressure plate is connected to the left mold; the right mold opening and closing mechanism also includes a right pressure plate; the end of the piston rod of the right mold opening and closing cylinder is connected to the right side of the right pressure plate, and the left side of the right pressure plate is connected to the right mold.

5. The automatic hydraulic mold opening and closing casting machine according to claim 4, characterized in that: The left mold limiting mechanism is connected to the left pressure plate; the right mold limiting mechanism is connected to the right pressure plate.

6. The automatic hydraulic mold opening and closing casting machine according to claim 1, characterized in that: The left stand is provided with a first positioning hole; the right stand is provided with a second positioning hole; the axes of the first positioning hole and the second positioning hole are parallel to the horizontal plane.

7. An automatic hydraulic mold opening and closing casting machine according to claim 6, characterized in that: The piston rod of the left mold opening and closing oil cylinder and the piston rod of the right mold opening and closing oil cylinder pass through the first positioning hole and the second positioning hole respectively.

8. The automatic hydraulic mold opening and closing casting machine according to claim 1, characterized in that: It also includes a control cabinet; the control cabinet establishes a control connection with the hydraulic station.

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