Sand casting high-pressure automatic molding machine

Abstract

The utility model discloses a sand casting high-pressure automatic molding machine, which relates to the field of sand casting molding machines, and comprises a template, an upper sand box and a lower sand box, the outer ends of the upper sand box and the lower sand box are in threaded connection with a first two-way threaded rod group, an upper pressing plate is in sliding connection with the inside of the upper sand box, and a lower pressing plate is in sliding connection with the inside of the lower sand box. An upper pressing cylinder is fixedly connected to the upper end of the upper pressing plate, an upper fixing plate is fixedly connected to the upper end of the upper pressing cylinder, a lower pressing plate is slidably connected into the lower sand box, a lower pressing cylinder is fixedly connected to the lower end of the lower pressing plate, and a lower fixing plate is fixedly connected to the lower end of the lower pressing cylinder. And the outer ends of the upper fixing plate and the lower fixing plate are in threaded connection with a second bidirectional threaded rod group. By arranging the upper sand box, the lower sand box, the upper pressing cylinder and the lower pressing cylinder, the device can cast upper and lower molds at the same time, the working efficiency is greatly improved, and the device has the advantages of being simple in structure, convenient to operate, free of manual assistance, high in working efficiency and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of sand casting machines, in particular to a sand casting high-pressure automatic molding machine. Background Art

[0002] Sand casting high pressure automatic molding machine is a kind of equipment used for sand casting, mainly used to manufacture metal castings. This equipment adopts high pressure compaction technology, which can quickly and accurately complete the pressing and molding of sand molds, thereby greatly improving casting production efficiency and product quality.

[0003] However, the existing sand casting high-pressure automatic molding machine has a complex structure and high cost, which is unaffordable for some small and medium-sized metal foundries. They generally use ordinary sand casting machines, manually add sand, and require manual assistance during casting. Moreover, only half a mold can be cast each time, which has high labor intensity and low work efficiency.

[0004] In order to solve the technical problem, the utility model proposes a sand casting high-pressure automatic molding machine. Utility Model Content

[0005] The main purpose of the utility model is to provide a sand casting high-pressure automatic molding machine, which can effectively solve the problems mentioned in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A sand casting high-pressure automatic molding machine comprises a template, an upper sand box, and a lower sand box. The outer ends of the upper sand box and the lower sand box are threadedly connected with a first two-way threaded rod group, an upper pressure plate is slidably connected in the upper sand box, an upper pressure cylinder is fixedly connected to the upper pressure plate, an upper fixing plate is fixedly connected to the upper pressure cylinder, a lower pressure plate is slidably connected in the lower sand box, a lower pressure cylinder is fixedly connected to the lower pressure plate at the lower end, a lower fixing plate is fixedly connected to the lower pressure cylinder at the lower end, a second two-way threaded rod group is threadedly connected to the outer ends of the upper fixing plate and the lower fixing plate, a No. 1 motor is provided at the upper end of the upper sand box, and a No. 2 motor is provided at the lower end of the lower sand box.

[0008] Preferably, the template is located between the upper sand box and the lower sand box, and the side ends of the upper sand box and the lower sand box are provided with material conveying pipes. Both ends of each threaded rod in the first bidirectional threaded rod group are provided with thread grooves, and the thread directions of the two thread grooves are opposite. The threaded rods in the second bidirectional threaded rod group are the same as the threaded rods of the first bidirectional threaded rod group.

[0009] Preferably, the upper and lower ends of the first bidirectional threaded rod group and the second bidirectional threaded rod group are both connected with support plates, the upper surface of the upper support plate is connected with a No. 1 turntable, the No. 1 motor driving end is fixedly connected to the No. 1 turntable, the upper end of the threaded rod in the first bidirectional threaded rod group is fixedly connected with a gear, which meshes with the No. 1 turntable, the lower surface of the lower support plate is connected with a No. 2 turntable, the No. 2 turntable is fixedly connected to the No. 2 motor driving end, and the lower end of the threaded rod in the second bidirectional threaded rod group is fixedly connected with a gear, which meshes with the No. 2 turntable.

[0010] Preferably, the side end of the support plate is fixedly connected to the base plate, the No. 1 motor and the No. 2 motor are fixedly connected to the base plate, the side end of the base plate is provided with a push plate, and the rear end of the push plate is provided with a push cylinder.

[0011] Preferably, a mold is clamped in the template, a connecting head is provided at the upper end of the mold, a pushing cylinder is fixedly connected to the side end of the template, a placing plate is fixedly connected to the side end of the base plate, and the upper surface of the placing plate is flush with the lower edge of the pushing plate.

[0012] Preferably, a connecting pipe is slidably connected inside the upper sand box, the connecting pipe can be plugged into the connecting head, the upper end of the connecting pipe is fixedly connected to a spring, and the spring is fixedly connected to the upper surface of the upper sand box.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides an upper sand box and a lower sand box, and the template is moved between the upper sand box and the lower sand box by a pushing cylinder. Then, the No. 1 motor is started, and the upper sand box and the lower sand box are driven to move by the cooperation of the No. 1 turntable and the first two-way threaded rod group, so that the two are connected with the template. The No. 2 motor is started, and the upper pressure cylinder and the lower pressure rod are moved by the cooperation of the No. 2 turntable and the second two-way threaded rod group, so that they are located in the upper sand box and the lower sand box. Then, sand material for casting is injected into the upper sand box and the lower sand box through the feeding pipe. Then, the upper pressure cylinder is started to push the upper pressure plate and the downward pressure to squeeze the sand material in the upper sand box. The lower pressure cylinder is started to push the lower pressure plate to rise and squeeze the sand material in the lower sand box. At the same time, the upper and lower molds are cast, which greatly improves the work efficiency. The device has the advantages of simple structure, convenient operation, no need for manual assistance, high work efficiency and high practicality.

[0015] In the utility model, a connecting pipe is provided in the upper sand box. When the upper sand box is connected to the template, the connecting pipe can be connected to the connecting head on the mold, so that a channel for liquid injection can be reserved. A push plate and a placement plate are provided, and when the casting is completed and demolded, the push plate can be used to push the completed sand mold onto the placement plate, so that the device can continue to be used, thereby improving the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a sand casting high-pressure automatic molding machine of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a first bidirectional threaded rod group and a second bidirectional threaded rod group of a sand casting high-pressure automatic molding machine of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of a sand casting high-pressure automatic molding machine of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the internal structure of an upper sand box of a sand casting high-pressure automatic molding machine.

[0020] In the figure: 1. template; 2. upper sand box; 3. lower sand box; 4. first bidirectional threaded rod group; 5. upper pressure plate; 6. upper pressure cylinder; 7. upper fixed plate; 8. lower pressure plate; 9. lower pressure cylinder; 10. lower fixed plate; 11. second bidirectional threaded rod group; 12. No. 1 motor; 13. No. 2 motor; 14. support plate; 15. No. 1 turntable; 16. No. 2 turntable; 17. base plate; 18. push plate; 19. connector; 20. placement plate; 21. connecting pipe; 22. spring. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a sand casting high-pressure automatic molding machine includes a template 1, an upper sand box 2, and a lower sand box 3. A mold is clamped in the template 1, a connecting head 19 is arranged on the upper end of the mold, a pushing cylinder is fixedly connected to the side end of the template 1, the template 1 is located between the upper sand box 2 and the lower sand box 3, a connecting pipe 21 is slidably connected in the upper sand box 2, the connecting pipe 21 can be plugged with the connecting head 19, and a channel for subsequent pouring of molten metal can be reserved, a spring 22 is fixedly connected to the upper end of the connecting pipe 21, the spring 22 is fixedly connected to the upper surface of the upper sand box 2, the spring 22 can make the connecting pipe 21 move up and down a certain distance, and connect the connecting heads 19 of molds of different heights, and a feeding pipe is arranged on the side ends of the upper sand box 2 and the lower sand box 3.

[0023] The outer ends of the upper sand box 2 and the lower sand box 3 are threadedly connected with a first bidirectional threaded rod group 4, and each threaded rod in the first bidirectional threaded rod group 4 is provided with thread grooves at both ends, and the thread directions of the two thread grooves are opposite. An upper pressure plate 5 is slidably connected in the upper sand box 2, and an upper pressure cylinder 6 is fixedly connected to the upper end of the upper pressure plate 5, and an upper fixed plate 7 is fixedly connected to the upper end of the upper pressure cylinder 6. A lower pressure plate 8 is slidably connected in the lower sand box 3, and a lower pressure cylinder 9 is fixedly connected to the lower end of the lower pressure plate 8, and a lower fixed plate 10 is fixedly connected to the lower end of the lower pressure cylinder 9. The outer ends of the upper fixed plate 7 and the lower fixed plate 10 are threadedly connected with a second bidirectional threaded rod group 11, and the threaded rods in the second bidirectional threaded rod group 11 are the same as the threaded rods of the first bidirectional threaded rod group 4, and the upper and lower ends of the first bidirectional threaded rod group 4 and the second bidirectional threaded rod group 11 are both connected with support plates 14, and the support plates 14 are used to support the first bidirectional threaded rod group 4 and the second bidirectional threaded rod group 11.

[0024] A No. 1 motor 12 is provided at the upper end of the upper sand box 2, and a No. 2 motor 13 is provided at the lower end of the lower sand box 3. A No. 1 turntable 15 is connected to the upper surface of the upper support plate 14, and a No. 1 turntable 15 is fixedly connected to the driving end of the No. 1 motor 12. A gear is fixedly connected to the upper end of the threaded rod in the first bidirectional threaded rod group 4, and the gear is meshed with the No. 1 turntable 15. Starting the No. 1 motor 12 will drive the upper sand box 2 and the lower sand box 3 to move up and down through the No. 1 turntable 15 and the first bidirectional threaded rod group 4. A No. 2 turntable 16 is connected to the lower surface of the lower support plate 14, and the No. 2 turntable 16 is fixedly connected to the driving end of the No. 2 motor 13. A gear is fixedly connected to the lower end of the threaded rod in the second bidirectional threaded rod group 11, and the gear is meshed with the No. 2 turntable 16. Starting the No. 2 motor 13 will drive the upper fixed plate 7 and the lower fixed plate 10 to move up and down through the No. 2 turntable 16 and the second bidirectional threaded rod group 11, thereby driving the upper pressure cylinder 6 and the lower pressure cylinder 9 to move up and down.

[0025] The side end of the support plate 14 is fixedly connected to a base plate 17, which is directly fixed on the ground. Motor No. 12 and motor No. 2 13 are fixedly connected to the base plate 17. A push plate 18 is provided at the side end of the base plate 17, and a pushing cylinder is provided at the rear end of the push plate 18. The side end of the base plate 17 is fixedly connected to a placement plate 20, and the upper surface of the placement plate 20 is flush with the lower edge of the push plate 18. When the lower pressure cylinder 9 is at the lowest end and fully retracted, the lower pressure plate 8 will be flush with the height of the placement plate 20. The push plate 18 can be used to push the sand mold from the lower pressure plate 8 to the placement plate 20.

[0026] The mold card to be used is placed in the template 1, and then the pushing cylinder is used to push it between the upper sand box 2 and the lower sand box 3, and the No. 1 motor 12 is started. The No. 1 motor 12 drives the No. 1 turntable 15 to rotate, thereby acting with the gears at the upper ends of all the threaded rods in the first two-way threaded rod group 4, driving all the threaded rods in the first two-way threaded rod group 4 to rotate, which will drive the upper sand box 2 and the lower sand box 3 to move and connect them with the template 1, and then start the No. 2 motor 13, and the No. 2 motor 13 drives the No. 2 turntable 16 to rotate, and the upper pressure cylinder 6 and the lower pressure cylinder 9 are driven by the second two-way threaded rod group 11 to move, so that they are slidably connected in the upper sand box 2 and the lower sand box 3, and then the sand material for casting is injected into the upper sand box 2 and the lower sand box 3 through the feeding pipe, and then the upper pressure cylinder 6 is started to push the upper pressure plate 5 to press down and squeeze the sand material in the upper sand box 2, and the lower pressure cylinder 9 is started to push the lower pressure plate 8 to rise and squeeze the sand material in the lower sand box 3, and the upper and lower molds are cast at the same time.

[0027] After the casting is completed, the No. 1 motor 12 and the No. 2 motor 13 are turned over to make the upper sand box 2 and the upper pressure cylinder 6 rise, and the lower sand box 3 and the lower pressure cylinder 9 fall, so that the template 1 can be withdrawn from between the two, and then the No. 1 motor 12 and the No. 2 motor 13 are started again to connect the upper sand box 2 and the lower sand box 3 directly together, and the sand molds in the two will also be connected together, and then the No. 1 motor 12 is turned over again to move the upper sand box 2 up and the lower sand box 3 down, while the upper pressure cylinder 6 and the lower pressure cylinder 9 do not move, so that the demoulding is completed, and finally the upper pressure cylinder 6 and the lower pressure cylinder 9 retract, and the lower pressure plate 8 at the upper end of the lower pressure cylinder 9 is just flush with the push plate 18, so that the push plate 18 can be used to push the completed sand mold onto the placement plate 20.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sand casting high pressure automatic molding machine, comprising a template (1), an upper sand box (2), and a lower sand box (3), characterized in that: The outer ends of the upper sand box (2) and the lower sand box (3) are threadedly connected with a first bidirectional threaded rod group (4); an upper pressure plate (5) is slidably connected inside the upper sand box (2); an upper pressure cylinder (6) is fixedly connected to the upper pressure plate (5); an upper fixed plate (7) is fixedly connected to the upper pressure cylinder (6); a lower pressure plate (8) is slidably connected inside the lower sand box (3); a lower pressure cylinder (9) is fixedly connected to the lower pressure plate (8); a lower fixed plate (10) is fixedly connected to the lower pressure cylinder (9); the outer ends of the upper fixed plate (7) and the lower fixed plate (10) are threadedly connected with a second bidirectional threaded rod group (11); a first motor (12) is provided at the upper end of the upper sand box (2); and a second motor (13) is provided at the lower end of the lower sand box (3).

2. A sand casting high pressure automatic molding machine according to claim 1, characterized in that: The template (1) is located between an upper sand box (2) and a lower sand box (3); a material conveying pipe is arranged at the side ends of the upper sand box (2) and the lower sand box (3); thread grooves are provided at both ends of each threaded rod in the first bidirectional threaded rod group (4); and the thread directions of the two thread grooves are opposite; the threaded rods in the second bidirectional threaded rod group (11) are the same as the threaded rods in the first bidirectional threaded rod group (4).

3. A sand casting high pressure automatic molding machine according to claim 1, characterized in that: The upper and lower ends of the first bidirectional threaded rod group (4) and the second bidirectional threaded rod group (11) are both connected to support plates (14); the upper surface of the upper support plate (14) is connected to a first turntable (15); the driving end of the first motor (12) is fixedly connected to the first turntable (15); the upper ends of the threaded rods in the first bidirectional threaded rod group (4) are fixedly connected to gears, which mesh with the first turntable (15); the lower surface of the lower support plate (14) is connected to a second turntable (16); the second turntable (16) is fixedly connected to the driving end of the second motor (13); the lower ends of the threaded rods in the second bidirectional threaded rod group (11) are fixedly connected to gears, which mesh with the second turntable (16).

4. A sand casting high pressure automatic molding machine according to claim 3, characterized in that: The side end of the support plate (14) is fixedly connected to a base plate (17), the first motor (12) and the second motor (13) are fixedly connected to the base plate (17), the side end of the base plate (17) is provided with a push plate (18), and the rear end of the push plate (18) is provided with a push cylinder.

5. A sand casting high pressure automatic molding machine according to claim 4, characterized in that: A mold is clamped inside the template (1), and a connector (19) is provided at the upper end of the mold. A push cylinder is fixedly connected to the side end of the template (1), and a placement plate (20) is fixedly connected to the side end of the base plate (17). The upper surface of the placement plate (20) is flush with the lower edge of the push plate (18).

6. A sand casting high pressure automatic molding machine according to claim 5, characterized in that: A connecting pipe (21) is slidably connected inside the upper sand box (2), and the connecting pipe (21) can be plugged into the connecting head (19). A spring (22) is fixedly connected to the upper end of the connecting pipe (21), and the spring (22) is fixedly connected to the upper surface of the upper sand box (2).

Images