CN203221184U - Equipment for improving sand molding efficiency - Google Patents

Abstract

The utility model relates to a device for improving the efficiency of sand-covered molding, which belongs to the field of iron mold sand-covered casting. The utility model includes a support frame composed of an upper beam, a base, a column between the upper beam and the base, a sanding and sand shooting device and a rotating mechanism arranged on the base, and is characterized in that: a four-station workbench, Lifting sand shooting head and lifting roller table opening and closing mechanism, the four-station worktable is fixed on the rotating mechanism, one side of the upper beam is connected with the lifting sand shooting head, and the other side is connected with the lifting roller table opening and closing mechanism, The lifting type sanding head and the lifting type roller table opening and closing mechanism are arranged on the left and right, and the four-station workbench is located under the lifting type sanding head and the lifting type roller table opening and closing mechanism. The utility model has reasonable structural design, convenient mold cleaning, high sand-covered molding efficiency, and is convenient for users to operate.

Description

A device for improving sand-covered molding efficiency

technical field

The utility model relates to a casting device, in particular to a device for improving the efficiency of sand-covered molding, which belongs to the field of iron mold sand-covered casting.

Background technique

Sand-coated iron mold is a special casting process that blows coated sand into the gap between the mold heated to a certain temperature and the iron mold, and hardens it into shape. With the advantages of its own technology, and with the development of the automobile industry and With the rise of the cement industry, the scope of application of sand-coated iron molds is becoming wider and wider, especially suitable for the mass production of small and medium-sized castings, so the sand-coated iron mold production line has been widely promoted.

As the core equipment of the production line--sand-covered molding machine, its molding efficiency is the main factor determining the speed of the production line. There are five processes in sand-covered molding: mold closing, sand shooting, curing, mold opening, and mold cleaning. The five processes complement each other and are indispensable. Among these processes, curing and mold cleaning take up more time.

In some existing sand-covered molding machines, these five processes are completed sequentially at the same station, which results in a large amount of time spent in this station, forcing other stations in the production line to enter a waiting state for molding, reducing production efficiency, and due to There is an iron mold and a sand-shooting head above the mold, so the cleaning space is small, which is not conducive to the cleaning of the mold.

In order to meet the market's large demand for iron mold sand-coated castings, enterprises have to use two or more iron mold sand-coated production lines to produce at the same time, which increases production costs for enterprises and takes up more land resources and resources. Labor costs.

China Patent No. 201220113604.3 discloses a utility model patent titled "a sand-covered molding machine", which includes a frame, the frame includes a top box and a column connected to the bottom of the top box, and the bottom of the top box is set There is a sand-covered cover, and a support roller table is set under the sand-covered cover. The support pipe extends to both sides to form a conveying roller table section, and a stopper is arranged on the support roller table. Although the structure of this patent is simple, there is no mold cleaning, etc. structure, so there are still the above-mentioned defects.

China Patent No. 200820085552.7 discloses a utility model patent named "Sand-coated molding machine adapted to automatic production line". This patent moves in and out by rails, and moves the sand-coated iron mold from directly above the mold to the outside of the mold. Clearing up a certain space for mold cleaning facilitates the cleaning work to a certain extent, but for the entire sand-covered molding process, the five processes are still concentrated in the same station, which has no substantial impact on the molding efficiency. improve, so there are still the above defects.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide a device with reasonable structure design, increased mold cleaning space, and improved sand-covered molding efficiency.

The technical solution adopted by the utility model to solve the above problems is: a device for improving the efficiency of sand-covered molding, including a support frame composed of an upper beam, a base, a column between the upper beam and the base, a sand-adding and sand-shooting device and a device The rotating mechanism on the base is characterized in that it also includes a four-station workbench, a lift-type sand shooting head and a lift-type roller table opening and closing mechanism, the four-station workbench is fixed on the rotation mechanism, and the beam One side is connected with the lifting type sanding head, and the other side is connected with the lifting type roller table opening and closing mechanism. The lifting type sanding head and the lifting type roller table opening and closing mechanism are arranged on the left and right. and under the lifting roller table opening and closing mechanism; it is convenient to form a No. 1 station for mold clamping and sand shooting under the lifting type sand shooting head, and a No. No. 1 station, by controlling the intermittent rotation of the four-station worktable, the second station for curing and the fourth station for mold cleaning are formed between the above two stations, and the supporting frame is used to install the upper beam And the base and other components play a fixed role. The sanding and shooting device is a lifting type sanding head for sanding and pressurization. The rotating mechanism is to better rotate the four-station workbench and improve the sand-covered molding efficiency.

The lifting sand shooting head described in the utility model is provided with a first roller frame, a first telescopic oil cylinder and a sand shooting head, and the first roller frame and the first telescopic oil cylinder are connected with the sand shooting head through a hinge. The lifting type roller table opening and closing mechanism includes a second roller table frame, a second telescopic oil cylinder and a roller table support seat, and the second roller table frame and the second telescopic oil cylinder are connected to the roller table support seat through a hinge On the four-station workbench, there are four symmetrically distributed molds; the closing and opening of the first roller frame is controlled by the extension and retraction of the first telescopic oil cylinder, and the second telescopic oil cylinder and the second roller table The frame also has the same function, and four symmetrically distributed molds are used for the operation of four stations.

The sand-filling and sand-shooting device described in the utility model is provided with a sand-filling bucket, an automatic sand-filling mechanism connected with the sand-filling bucket, and a sand-shooting gas storage bag, and the sand-filling bucket and the sand-shooting gas storage bag are fixed on the upper beam. The sand feeding bucket is connected with the lifting sand shooting head through the automatic sand feeding mechanism; the sand shooting air storage bag inflates and pressurizes the sand shooting head, and the pressure air blows the coated sand into the gap between the iron mold and the mold to form a sand coating layer. The automatic sand feeding mechanism is a lifting type sand injection head.

The rotating mechanism described in the utility model is provided with a slewing support and a servo motor, and the slewing support and the servo motor are both arranged on a base; the base is used for installing other structural components.

The utility model also includes an electric heating tube, a collector ring and an electric brush. The electric heating pipe is connected with the mould, the collector ring is fixed on the base, and the electric brush is connected with the rotating mechanism; the collector ring and the electric brush are electrically controlled The box is powered to heat the mold to an appropriate temperature for sand-covered molding.

The lift-type roller table opening and closing mechanism described in the utility model and the lift-type sand-shooting head are arranged symmetrically with respect to the center line of the base; the symmetrical design on both sides makes the center distances to the four-station workbench equal, It is convenient for the iron parting surface to be consistent with the position of the mold plate.

The sand shooting gas storage bag described in the utility model is connected with the lifting type sand shooting head through the normally closed electromagnetic valve, and the lifting type sand shooting head is also connected with the normally open electromagnetic valve; the normally open electromagnetic valve is closed, and the normally closed electromagnetic valve is opened. Pressurize the sanding head for sanding.

The central gyration radius of the four molds described in the utility model is equal to the horizontal distance from the center line of the lifting type sand shooting head or the center line of the lifting type roller table opening and closing mechanism to the rotation center line of the four-station worktable; the lifting type sand shooting The head and the lifting roller table opening and closing mechanism are located directly above the four molds, which is convenient for the four-station worktable to rotate for the stations required for sand-covered molding.

The sand shooting head of the utility model moves through the first lifting oil cylinder fixed on the upper beam, and the roller support base moves through the second lifting oil cylinder fixed on the upper beam; the first lifting oil cylinder realizes the movement of the sand shooting head up and down Parallel movement, the second lifting cylinder realizes the up and down parallel movement of the roller table opening and closing mechanism.

Compared with the prior art, the utility model has the following advantages and effects: 1. The structure design is reasonable. When molding with sand, a four-station worktable is used to rotate the molding, and the four stations perform actions. Sand molding efficiency.

2. In the four-station structure, the mold cleaning station is vacated separately, which increases the space occupied by mold cleaning and is convenient for manual operation, and this station can also be used as a mold changing station. Due to the large space, it is convenient to change molds .

3. The iron mold enters from one side of the sand-coated molding equipment and is pushed out from the other side. The whole process is smooth, which is conducive to the layout of the iron mold sand-coated production line.

Description of drawings

Fig. 1 is a schematic diagram of the front view of the device of the present invention.

Fig. 2 is a schematic structural view of the utility model A-A.

Fig. 3 is a structural schematic diagram of the utility model B-B.

Fig. 4 is a top view structural diagram of the four-position workbench in the utility model.

Fig. 5 is a structural schematic diagram of the sand shooting process of mold closing of the present invention.

Fig. 6 is a structural schematic diagram of the mold opening process of the utility model.

In the figure: No. 1 station Ⅰ, No. 2 station Ⅱ, No. 3 station Ⅲ, No. 4 station Ⅳ, support frame 1, sanding and sand shooting device 2, lifting sand shooting head 3, lifting roller table opening Combined mechanism 4, four-station workbench 5, rotating mechanism 6, first lifting cylinder 7, second lifting cylinder 8, worm 9, upper beam 11, column 12, base 13, sand adding bucket 21, automatic sand adding mechanism 22 , the sand-shooting gas storage bag 23, the first roller frame 31, the first telescopic oil cylinder 32, the sand-shooting head 33, the second roller frame 41, the second telescopic oil cylinder 42, the roller support seat 43, the mold 51, Electric heating tube 52, collector ring 53, brush 54, slewing bearing 61, servo motor 62, first guide rod 71, second guide rod 81, first production line roller frame 311, iron type 312, normally closed solenoid valve 313, a normally open solenoid valve 314, a second production line roller frame 411, a slewing bearing inner ring 611, and a slewing bearing outer ring 612.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

1 to 6, this embodiment includes a support frame 1, a sanding and sand shooting device 2, a lifting sand shooting head 3, a lifting roller table opening and closing mechanism 4, a four-station workbench 5 and a rotating mechanism 6.

The support frame 1 comprises an upper beam 11, a column 12 and a base 13, the column 12 is connected between the upper beam 11 and the base 13, and the three are fixed as a whole, and one side of the upper beam 11 is connected with a lifting type sand shooting head 3, and the other The side is connected with a lifting type roller table opening and closing mechanism 4, and a rotating mechanism 6 is installed on the base 13, and a four-station workbench 5 is fixed on the rotating mechanism 6.

Sand-adding and sand-shooting device 2 includes a sand-adding bucket 21, an automatic sand-filling mechanism 22 and a sand-shooting gas storage bag 23. The sand-adding bucket 21 and the sand-shooting gas storage bag 23 are fixed on the upper beam 11. The sand mechanism 22 adds sand for the sand-shooting head 33, and the sand-shooting gas storage bag 23 communicates with the lift-type sand-shooting head 3 through the normally closed electromagnetic valve 313, and the lift-type sand-shooting head 3 communicates with the normally-open electromagnetic valve 314.

The lifting type sanding head 3 comprises the first roller frame 31 equipped with rollers, the first telescopic oil cylinder 32 and the sanding head 33, the lifting type sanding head 3 is fixedly installed on the upper beam 11, and the sanding head 33 The first lifting cylinder 7 fixed on the upper beam 11 is driven, and the first guide rod 71 is used as a balance support to realize the vertical parallel movement of the sand shooting head 33. The sand shooting head 33 is connected with the first roller frame 31 and the first telescopic oil cylinder. 32 connection, the first roller frame 31 and the first telescopic oil cylinder 32 are hingedly connected to the sand shooting head 33, and the closing of the first roller frame 31 is controlled by the extension and retraction of the first lifting cylinder 7 and gape.

The lifting type roller table opening and closing mechanism 4 includes the second roller table frame 41 equipped with rollers, the second telescopic oil cylinder 42 and the roller table support seat 43, the lifting type roller table opening and closing mechanism 4 is installed on the upper beam 11, the second The roller table frame 41 and the second telescopic oil cylinder 42 are hingedly connected to the roller table support base 43, and the closing and opening of the second roller table frame 41 is controlled by the extension and retraction of the second lifting cylinder 8, The roller table support seat 43 is driven by the second lifting cylinder 8 fixed on the upper beam 11, and is supported by the second guide rod 81 to realize the up and down parallel movement of the roller table opening and closing mechanism. The mechanism 4 is arranged symmetrically with the lift-type sand shooting head 3 about the plane centerline of the base 13 .

The four-station workbench 5 is fixed on the rotating mechanism 6, and four molds 51 are installed on the four-station workbench 5 to form the first station I, the second station II, the third station III and the fourth station IV , the center radius of gyration of the four molds 51 is equal to the horizontal distance from the centerline of the lift-type sand shooting head 3 or the centerline of the lift-type roller table opening and closing mechanism 4 to the centerline of the four-station workbench 5.

This embodiment also includes electric heating tube 52, slip ring 53 and electric brush 54, and four molds 51 are equipped with electric control box and electric heating tube 52, and electric heating tube 52 is connected with mold 51, and slip ring 53 is fixed on On the base 13, the electric brush 54 is connected with the rotating mechanism 6, and the electric control box supplies power to it through the collector ring 53 and the electric brush 54, so that the mold 51 is heated to an appropriate temperature for sand-covered molding.

The rotating mechanism 6 includes a slewing bearing 61 and a servo motor 62. The slewing bearing 61 is installed on the center of the base 13. The servo motor 62 is fixed on the base 13. The servo motor 62 drives the worm 9 to mesh with the slewing bearing outer ring 612, driving the slewing bearing outer ring 612 Rotate, the four-station workbench 5 is fixed on the outer ring 612 of the slewing support, thereby driving the rotation of the four-station workbench 5, the inner ring 611 of the slewing support mainly plays the role of fixing, and the four-station workbench 5 will enter the Suspend, the time of suspend is decided by casting process parameter, suspend is for mold 51 is parked directly below lift-type sand-shooting head 3 or lift-type roller table opening and closing mechanism 4.

This embodiment adopts a four-station workbench 5. If the sand-covered molding takes T1 to close the mold, T2 to shoot the sand, T3 to solidify, T4 to open the mold, and T5 to clean the mold 51, a sand-coated molding is completed. The time is: T1+T2+T3+T4+T5=T, that is, there will be an iron type 312 molding completed in T time; under the premise of ensuring T unchanged, adopt the four-station rotary molding method, each station The time becomes T/4, and this rotation time is ignored, that is, every T/4 time, there will be an iron mold 312 molding completed, which essentially improves the efficiency of sand-covered molding. To further shorten the molding cycle, The number of rotary stations can continue to be increased, but the operating speed of the production line depends on the operating speed of the least efficient station. According to the technical level of the existing iron type 312 sand-coated production line, four stations are the best selection.

Under the premise of not affecting the molding quality, the five processes of mold closing, sand shooting, curing, mold opening, and mold 51 cleaning carried out on the same station are decomposed into several stations. While ensuring the same curing time, The stagnation time of the iron mold 312 at the same station is effectively reduced, and the operating efficiency of the sand-covered molding line is improved.

In this embodiment, No. 1 station I is the mold clamping and sand shooting station, No. 2 station II is the curing station, No. 3 station III is the mold opening station, and No. 4 station IV is the mold 51 cleaning station.

Referring to Fig. 4-Fig. 6, when working, the first lifting cylinder 7 moves upwards, and after driving the sand shooting head 33 to rise to a high position, the first telescopic cylinder 32 stretches out to close the first roller frame 31. At this time, the first The roller table frame 31 is on the same horizontal line as the roller table frame 311 of the first production line, and is located on the first roller table frame 31 directly below the sand injection head 33 where the iron mold 312 waiting for sand-covered molding is pushed on the production line, and the first lifting cylinder 7 Start to move downward, the parting surface of the iron mold 312 is in contact with the mold plate 51 and is supported, the iron mold 312 stops moving, and the sand-shooting head 33 continues to descend until the lower bottom surface of the sand-shooting plate contacts the upper surface of the iron mold 312 , and firmly press the iron type 312, the first lifting cylinder 7 stops the downward movement, closes the normally open solenoid valve 314, opens the normally closed solenoid valve 313, and the sand shooting air storage bag 23 inflates and pressurizes the sand shooting head 33. The plate blows the coated sand in the sand shooting head 33 into the gap between the mold 51 and the iron mold 312. At the same time, the first telescopic oil cylinder 5 retracts. At this time, the first roller frame 31 is opened. After a few seconds, the solenoid valve is normally opened. 314 is opened, and the normally closed solenoid valve 313 is closed to depressurize and exhaust the sand jet head 33. After the air pressure in the sand jet head 33 is equal to the external air pressure, the first lifting cylinder 7 rises to drive the sand jet head 33 to a high position. A telescopic oil cylinder 32 stretches out to close the first roller frame 31, waiting for the next iron mold 312 to enter; the four-station workbench 5 rotates 90° clockwise to drive the sand-covered iron mold 312 to the second working station. Station II is solidified, and at the same time, another mold 51 that is not covered by the iron mold 312 is moved from the fourth station IV to the first station I to complete the mold closing and sand shooting of the next iron mold 312. 5 Continue to rotate 90°, drive the iron mold 312 that has completed the solidification of the coated sand to No. 3 station III, retract the second telescopic oil cylinder 42, open the second roller frame 41, and move the second lifting oil cylinder 8 downward Move to the low position, the second telescopic oil cylinder 42 is stretched out, the second roller frame 41 is closed, the second lifting oil cylinder 8 moves upward, the roller supports the iron mold 312 running side, and the iron mold 312 is separated from the mold 51, the second The second lifting cylinder 8 drives the iron form 312 to a high position, at this time the second roller frame 41 is on the same level as the second production line roller frame 411, the iron form 312 is pushed into the production line, and the unpacking action of the third station III is completed ; The four-station workbench 5 continues to rotate 90°, drives another iron mold 312 that has been solidified to the third station III, and starts the unpacking action, and the unpacked mold 51 has been moved by the third station III To No. 4 cleaning station, the mold 51 is cleaned manually. After cleaning the mold 51, the four-station workbench 5 continues to rotate 90°, and the mold 51 is rotated from No. 4 station IV to No. 1 station I, repeat The above sand-covered molding process.

The above is only a specific embodiment described in this specification. Devices can be added to this utility model. All equivalent or simple changes made according to the structure, features and materials described in the utility model patent concept are included in the Within the protection scope of the utility model patent.

Claims (9)

1. A device for improving the efficiency of sand-covered molding, comprising a support frame consisting of an upper beam, a base, a column between the upper beam and the base, a sand-adding and sand-shooting device, and a rotating mechanism arranged on the base, characterized in that: It also includes a four-station workbench, a lift-type sand-shooting head and a lift-type roller table opening and closing mechanism. The four-station workbench is fixed on the rotating mechanism, and one side of the upper beam is connected with a lift-type sand-shooting head. The other side is connected with the lifting type roller table opening and closing mechanism, the lifting type sanding head and the lifting type roller table opening and closing mechanism are arranged on the left and right, and the four-station workbench is located under the lifting type sanding head and the lifting type roller table opening and closing mechanism. 2. The equipment for improving sand-covered molding efficiency according to claim 1, characterized in that: the lift-type sand shooting head is provided with a first roller frame, a first telescopic oil cylinder and a sand shooting head, and the first A roller table frame and the first telescopic oil cylinder are connected with the sand shooting head through hinges. The lifting roller table opening and closing mechanism includes the second roller table frame, the second telescopic oil cylinder and the roller table supporting seat. The second roller table frame and the second telescopic oil cylinder are hingedly connected to the roller table support seat, and four molds symmetrically distributed are arranged on the four-station workbench. 3. The equipment for improving sand-covered molding efficiency according to claim 1 or 2, characterized in that: the sand-filling and sand-shooting device is provided with a sand-filling bucket, an automatic sand-filling mechanism connected with the sand-filling bucket, and a sand-shooting device. The air storage bag, the sand adding bucket and the sand shooting air storage bag are all fixed on the upper beam, and the sand adding bucket is connected with the lifting type sand shooting head through the automatic sand adding mechanism. 4. The equipment for improving the efficiency of sand-covered molding according to claim 1, characterized in that: the rotating mechanism is provided with a slewing bearing and a servo motor, and the slewing bearing and the servo motor are both arranged on the base. 5. The equipment for improving the efficiency of sand-covered molding according to claim 1, characterized in that it also includes an electric heating tube, a slip ring and a brush, the electric heating tube is connected to the mold, and the slip ring is fixed on the base On, the brushes are connected with the rotating mechanism. 6. The equipment for improving the efficiency of sand-covered molding according to claim 1 or 2, characterized in that: the lifting roller table opening and closing mechanism and the lifting sand shooting head are arranged symmetrically with respect to the center line of the base. 7. The equipment for improving the efficiency of sand-covered molding according to claim 3, characterized in that: the sand-shooting gas storage bag is connected to the lift-type sand-shooting head through a normally closed solenoid valve, and the lift-type sand-shooting head is also Connect normally open solenoid valve. 8. The equipment for improving the efficiency of sand-covered molding according to claim 2, characterized in that: the radius of gyration of the centers of the four molds is the same as the center line of the lifting type sand shooting head or the center line of the lifting type roller table opening and closing mechanism. The horizontal distance of the rotary center line of the four-station worktable is equal. 9. The equipment for improving the efficiency of sand-covered molding according to claim 2, characterized in that: the sand shooting head moves through the first lifting oil cylinder fixed on the upper beam, and the roller support base is fixed on the upper beam The second lifting cylinder of the beam realizes the movement.

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