CN215657718U

CN215657718U - Sand shooting mechanism for molding machine

Info

Publication number: CN215657718U
Application number: CN202122204450.0U
Authority: CN
Inventors: 许明凯; 许德强
Original assignee: Quanzhou Dazzle Machinery Co ltd
Current assignee: Quanzhou Dazzle Machinery Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-01-28
Anticipated expiration: 2031-09-13

Abstract

The utility model relates to the technical field of molding machines, in particular to a sand shooting mechanism for a molding machine, which comprises a barrel, wherein a containing cavity is arranged in the barrel, a sand shooting port is arranged on one side of the bottom of the containing cavity, an air pipe is arranged on the inner side of the sand shooting port, a plurality of groups of spray heads facing the sand shooting port are arranged on the air pipe, each group of spray heads at least comprises two spiral pipes, the inner side of each spiral pipe is communicated with the air pipe, the outer side of each spiral pipe is an air outlet facing the sand shooting port, the spiral pipes in the same group are centrosymmetric, and a group of spiral airflow combination is formed by ventilation paths in each spiral pipe together. The utility model is helpful to solve the problems of relatively simple structure and insufficient driving force at the tail section of the air flow in the prior art.

Description

Sand shooting mechanism for molding machine

Technical Field

The utility model relates to the technical field of molding machines, in particular to a sand shooting mechanism for a molding machine.

Background

The molding machine is a casting apparatus for manufacturing sand molds, and its main functions are: filling sand, namely filling loose molding sand into a sand box; compacting the molding sand, wherein the loose molding sand in the sand box is compacted through different methods such as jolt ramming, compaction, jolt ramming, injection pressing and the like, so that the molding sand has enough strength in the processes of carrying, pouring and the like; and (4) stripping, namely taking out the pattern from the compacted sand mold by using different mechanisms.

If in the chinese utility model patent of grant notice No. CN213379164U, the name is "a novel sand shooting mechanism", disclose a novel sand shooting mechanism, including the barrel, have the holding chamber of holding sand grain in the barrel, the barrel has the feed inlet, corresponds last sand outlet that the cope flask set up and corresponds the lower sand outlet that the drag flask set up, still including setting up blow gas component in the holding chamber, blow gas component have the inlet end of being connected with the air supply and be used for blowing the end of giving vent to anger of sand, give vent to anger the end and correspond go up sand outlet and/or lower sand outlet setting. Although the air blowing component is arranged in the accommodating chamber and corresponds to the upper sand outlet and/or the lower sand outlet, so that sand grains in the sand box are distributed more uniformly, the air blowing port in the technical scheme has a relatively simple structure and a fixed air blowing direction, and the air flow enters the sand box and is blocked by the molding sand, so that the driving force at the tail section of the molding sand stroke is easily insufficient due to rapid attenuation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sand shooting mechanism for a molding machine, which is beneficial to solving the problems that the existing air blowing structure is relatively simple and the driving force of the tail section of an air flow is insufficient.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a penetrate sand mechanism for molding machine, includes the barrel, is equipped with the holding chamber in the barrel, and holding chamber bottom one side is equipped with penetrates the sand mouth, penetrates the sand mouth inboard and is equipped with the trachea, be equipped with the multiunit on the trachea and just to penetrate the shower nozzle of sand mouth, every group the shower nozzle includes two spiral pipes at least, every the spiral pipe inboard with the trachea intercommunication, the outside is just for penetrating the air outlet of sand mouth, the spiral pipe that is in the same group is central symmetry, and the ventilation route in every spiral pipe constitutes a set of spiral air current combination jointly.

Preferably, the sand shooting port comprises a first sand shooting port and a second sand shooting port which are arranged at an upper interval and a lower interval, and the opening structures of the first sand shooting port and the second sand shooting port are both horizontal strip-shaped through hole structures.

Preferably, the air pipe is horizontally arranged on the inner sides of the first sand shooting port and the second sand shooting port, and two ends of the air pipe penetrate through and extend to the outside of the barrel body and are connected with an external air source.

Preferably, a sand guide plate is arranged in the cylinder body and positioned between the first sand shooting port and the second sand shooting port.

Preferably, a filter screen is arranged on the spiral pipe, and the pore of the filter screen is smaller than the diameter of the molding sand.

Compared with the prior art, the utility model at least comprises the following advantages:

according to the utility model, the nozzle structure consisting of the spiral pipes is arranged, so that the airflow blown out by the nozzle forms spiral airflow, the molding sand in the sand shooting opening area can be driven to move to the interior of the sand box through a spiral path, the spiral airflow can enhance the driving force, the better orientation capability is kept, the attenuation is reduced, the strength of the driving force at the tail end of the airflow is favorably kept, the molding sand can be stably driven to all corners in the molding sand by the strong driving force, and the uniform covering effect of the molding sand on the internal space of the sand box is improved; the filter screen is arranged on the spiral pipe, so that unnecessary pipeline blockage caused by the fact that molding sand enters the air pipe in a shutdown state is avoided, the failure rate of the air pipe can be effectively reduced, and the service life and the overhaul period of the air pipe are prolonged.

Drawings

FIG. 1 is a cross-sectional view of a sand shooting mechanism in one embodiment;

FIG. 2 is a schematic diagram of a layout structure of a showerhead in an embodiment;

FIG. 3 is a schematic view of a partial structure of an airway tube according to an embodiment;

FIG. 4 is a diagram illustrating a screen structure of the first spiral duct in one embodiment.

The figure is marked with: 1. a barrel; 11. an accommodating cavity; 12. a sand inlet; 13. a first sand shooting port; 14. a second sand shooting port; 15. a sand guide plate; 2. an air tube; 3. a spray head; 31. a first spiral pipe; 32. a second spiral pipe; 33. and (5) filtering by using a filter screen.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description is made with reference to the accompanying drawings and detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the two elements or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, the present embodiment discloses a sand shooting mechanism for a molding machine, which includes a barrel 1, a housing cavity 11 for storing molding sand is provided in the barrel 1, a top of the housing cavity 11 is open, the opening serves as a sand inlet 12, and the sand inlet 12 is provided with a valve switch (not shown) for controlling an opening and closing state of the sand inlet 12. The first sand shooting port 13 and the second sand shooting port 14 are arranged on one side of the bottom of the accommodating cavity 11 and are arranged at the upper part and the lower part at intervals, the first sand shooting port 13 is located above the second sand shooting port 14 and is adapted to the requirements of sand shooting inlets of upper and lower sand shooting molding machines, the first sand shooting port 13 and the second sand shooting port 14 are respectively adapted to upper and lower sand boxes, and molding sand in the accommodating cavity 11 can enter the upper and lower sand boxes through the first sand shooting port 13 and the second sand shooting port 14 respectively.

First sand mouth 13 and second of penetrating is horizontal bar through-hole structure for the open structure of

sand mouth

14, 1 inside being located of barrel 13 and second penetrate and be equipped with sand guide plate 15 between the sand mouth 14, as shown in fig. 1, sand guide plate 15 is the grillage structure that the longitudinal section is the triangle-shaped structure, its top surface and bottom surface all downward sloping from inside to outside, the outside bottom of its top surface is connected with the inboard bottom of first sand mouth 13 of penetrating, its bottom surface outside bottom is connected with the inboard top of second sand mouth 14 of penetrating, the inboard bottom and the holding chamber 11 bottom of second sand mouth 14 of penetrating are connected, and holding chamber 11 bottom is equipped with towards the inclined plane structure that sand mouth 14 slopes is penetrated to the second, above-mentioned structure all helps the molding sand in the holding chamber 11 to penetrate sand mouth 13 or second sand mouth 14 and remove towards first sand mouth 14 of penetrating, pass the sand mouth preparation for shower nozzle 3 drive molding sand.

Combine figure 1 and figure 2, penetrate the trachea 2 that the sand mouth inboard was equipped with the level and sets up, trachea 2 bottom is connected fixedly through the support that the interval set up and barrel 1 or lead sand plate 15, plays to support fixed action, 2 both ends of trachea extend to barrel 1 is outside to be connected with outside air compressor, outside air compressor is as the air supply, can be for providing high-pressure gas in the trachea 2, is equipped with the solenoid valve on the trachea 2 as the control structure that opens and shuts, and can control trachea 2's closure or open the state in a flexible way through the controller.

Be equipped with the multiunit on trachea 2 just to penetrate shower nozzle 3 of sand mouth, as shown in fig. 3, every group shower nozzle 3 includes two spiral pipes, is first spiral pipe 31 and second spiral pipe 32 respectively, and first spiral pipe 31 and second spiral pipe 32 are inside to have a through-hole structure, passes through welded fastening between first spiral pipe 31 and second spiral pipe 32 and the trachea 2, every the spiral pipe inboard with trachea 2 intercommunication, the outside is just right penetrate the air outlet of sand mouth, be in same group's first spiral pipe 31 and second spiral pipe 32 and be central symmetry, and two spiral pipes revolve to the same, and the angle is different for ventilation route in two spiral pipes constitutes a set of spiral air current combination jointly, forms to possess difficult skew direction, the slow whirlwind air current of decay, passes as the drive sand mouth and to the driving source of removal in the sand box. It should be noted that each group of nozzles 3 are arranged at intervals and uniformly distributed inside the sand shooting port, so that each area of the sand shooting port has uniform driving airflow.

Further, be equipped with filter screen 33 on the spiral pipe, as shown in fig. 4, use first spiral pipe 31 as an example, its air outlet position is provided with filter screen 33, filter screen 33's hole is less than the diameter of molding sand, and this makes under the off-state, and the molding sand that is located holding chamber 11 can not get into trachea 2, perhaps stops to be quick-witted in 2 tracheas in the twinkling of an eye at trachea, can form the negative pressure in this air outlet department, and filter screen 33 can play the effect of stopping the molding sand.

In the specific implementation process, an external air compressor provides high-pressure air into the air pipe 2, the high-pressure air flows out from the air outlets of the first spiral pipe 31 and the second spiral pipe 32 at a high speed, the air flows from the first spiral pipe 31 and the second spiral pipe 32 in each group of nozzles 3 form a cyclone driving air flow together, the molding sand at the front end of the cyclone driving air flow is pressurized, and the molding sand in the area is blown to penetrate through the first sand shooting port 13 or the second sand shooting port 14 to shoot into each corner inside the cope flask or the drag flask.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a penetrate sand mechanism for molding machine, includes barrel (1), is equipped with holding chamber (11) in barrel (1), and holding chamber (11) bottom one side is equipped with penetrates the sand mouth, penetrates the sand mouth inboard and is equipped with trachea (2), its characterized in that: be equipped with the multiunit on trachea (2) just to penetrate sand mouthful shower nozzle (3), every group shower nozzle (3) include two spiral pipes at least, every the spiral pipe inboard with trachea (2) intercommunication, the outside is just right penetrate sand mouthful air outlet, is in the same spiral pipe of a set of and is central symmetry, and the ventilation route in every spiral pipe constitutes a set of spiral air current combination jointly.

2. A sand shooting mechanism for a molding machine as claimed in claim 1, wherein: penetrate the sand mouth and include first sand mouth (13) and second sand mouth (14) of penetrating that upper and lower interval set up, the open structure that sand mouth (13) and second penetrated sand mouth (14) is horizontal bar through-hole structure.

3. A sand shooting mechanism for a molding machine as claimed in claim 2, wherein: trachea (2) level sets up in first sand shooting mouth (13) and second sand shooting mouth (14) inboard, and trachea (2) both ends run through and extend to barrel (1) is outside, is connected with outside air supply.

4. A sand shooting mechanism for a molding machine as claimed in claim 2, wherein: and a sand guide plate (15) is arranged in the barrel (1) and positioned between the first sand shooting port (13) and the second sand shooting port (14).

5. A sand shooting mechanism for a molding machine as claimed in claim 1, wherein: be equipped with filter screen (33) on the spiral pipe, the hole of filter screen (33) is less than the diameter of molding sand.