CN112404364A - Vertical boxless automatic molding machine capable of automatically compensating sand washing compaction - Google Patents
Vertical boxless automatic molding machine capable of automatically compensating sand washing compaction Download PDFInfo
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- CN112404364A CN112404364A CN202011266654.0A CN202011266654A CN112404364A CN 112404364 A CN112404364 A CN 112404364A CN 202011266654 A CN202011266654 A CN 202011266654A CN 112404364 A CN112404364 A CN 112404364A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing
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Abstract
The invention relates to the technical field of vertical molding machines, and particularly discloses a vertical boxless automatic molding machine capable of automatically compensating sand washing compaction; the sand shooting device comprises a machine base, a sand shooting system, a positive pressure plate, a negative pressure plate, a positive pressure plate hydraulic pushing mechanism and a negative pressure plate overturning pushing mechanism, wherein an inner cavity is formed in the lower end of the machine base below a molding cavity chamber, an oil pressure cylinder is arranged in the inner cavity, the top end of a piston rod of the oil pressure cylinder is connected with a lifting plate, a plurality of concave-shaped openings are formed in a bottom plate of the molding cavity chamber below a casting mold arranged on the negative pressure plate after mold closing at intervals, and a movable sliding plate corresponding to each concave-shaped opening is arranged on the upper surface of the lifting plate; the vertical boxless automatic molding machine disclosed by the invention has the advantages that the structure of automatic compensation molding sand is novel when thick sand mold castings are produced, the whole set of automatic compensation sand filling compaction improvement process is simple, the improvement effect is excellent, the problem of sand shooting shadow is thoroughly solved, and the practicability is high.
Description
Technical Field
The invention relates to the technical field of vertical molding machines, and particularly discloses a vertical boxless automatic molding machine capable of automatically compensating sand washing compaction.
Background
The automatic molding machine for vertical parting flaskless shooting and pressing is a device for manufacturing sand molds, and comprises a floor box type machine base, wherein the front part of the machine base is provided with a positive pressure plate, a negative pressure plate frame, a connecting rod mechanism for controlling the turning and transferring of the negative pressure plate, a sand mold sliding plate and a cavity assembly, the negative pressure plate is hinged in the negative pressure plate frame, the connecting rod mechanism is hinged with the negative pressure plate, the negative pressure plate can be turned over up and down under the action of the connecting rod mechanism, and sand in a sand shooting cylinder is extruded and molded through the approaching movement between the positive pressure plate and the negative pressure plate.
For example, the invention with the patent number of CN103433437A discloses a vertical parting flaskless clay sand shooting and pressing automatic molding machine, which comprises a machine base, wherein a back pressure plate swinging link mechanism, a quick sand shooting system and a quick liquid filling valve group are arranged on the machine base, and the back pressure plate swinging link mechanism and the quick sand shooting system adopt a high-pressure sealing structure, so that no sand dust leaks out in the whole molding process of the molding machine; the vertical boxless automatic molding machine disclosed by the invention is the most common type on the market, but the boxless shooting-pressing automatic molding machine has some defects when a thick sand mold casting with larger volume is extruded and molded. The main reason is that the casting mold has a certain thickness, so the sand sprayed is easily blocked, namely, in the sand spraying process, due to the existence of the casting mold, the sand spraying below the casting mold on the back pressure plate easily caused when the sand is sprayed in the sand spraying cylinder is insufficient (namely, sand spraying shadow exists), and when the sand spraying is insufficient, unqualified sand blocks with insufficient compaction can be extruded by extrusion molding, so unqualified castings are produced, and the rejection rate of the castings prepared by the sand mold is high. Therefore, aiming at the defects of the existing vertical parting boxless automatic molding machine, the vertical boxless automatic molding machine with the automatic compensation sand washing and compacting functions, which can effectively solve the problem of sand shooting shadow and greatly improve the qualification rate of finished products, is a technical problem to be solved.
Disclosure of Invention
The invention aims to solve the defects of the conventional vertical parting boxless automatic molding machine, and designs the vertical boxless automatic molding machine which can effectively solve the problem of sand shooting shadow and can greatly improve the qualified finished product material and has the automatic compensation sand washing and compacting functions.
The invention is realized by the following technical scheme:
a vertical boxless automatic molding machine capable of automatically compensating sand washing compaction comprises a machine base, a sand shooting system, a positive pressure plate, a negative pressure plate, a positive pressure plate hydraulic pushing mechanism and a negative pressure plate overturning pushing mechanism, wherein a molding cavity is arranged on the machine base, the sand shooting system is arranged at the top end of the machine base above the molding cavity, the negative pressure plate and the positive pressure plate are respectively arranged at the left end and the right end of the molding cavity, casting molds are arranged on the inner side surfaces of the positive pressure plate and the negative pressure plate, the hydraulic pushing mechanism is connected with the positive pressure plate, the negative pressure plate overturning pushing mechanism is connected with a reaction plate, an inner cavity is arranged at the lower end of the machine base below the molding cavity, an oil hydraulic cylinder is arranged in the inner cavity, the top end of a piston rod of the oil hydraulic cylinder is connected with a lifting plate, a plurality of sunken-shaped openings are arranged on a molding cavity bottom, the upper surface of the lifting plate is provided with a movable sliding plate corresponding to each sunken port, the shape and size of the movable sliding plate are the same as those of the sunken ports, and when the movable sliding plate completely extends into the sunken ports, the upper surface of the movable sliding plate is parallel to the bottom wall of the modeling chamber.
As a further arrangement of the above scheme, the shape of the concave opening is a strip shape, and the strip-shaped concave opening is arranged perpendicular to the front side and the rear side of the modeling chamber; the shape of the concave opening is not limited to this, and the shape and size of the concave opening can be set to be a long strip or other shapes according to the casting mold.
As a further arrangement of the scheme, 1-4 concave openings are formed in the bottom wall of the modeling cavity, and a plurality of concave openings are arranged in the front and back of the bottom plate of the modeling cavity; the number of specific concave-shaped openings is not limited thereto and is set according to the characteristics of a specific casting mold.
As a further arrangement of the scheme, the left end and the right end of the lifting plate are provided with limiting sliding holes, and the top wall of the inner cavity is connected with two sliding guide rods capable of penetrating through the limiting sliding holes.
As the further setting of above-mentioned scheme, penetrate the sand system including penetrating a sand section of thick bamboo and gas storage package, penetrate a sand section of thick bamboo and the equal fixed top that sets up at the frame of gas storage package, penetrate and be connected with the trachea between a sand section of thick bamboo and the gas storage package, be provided with on the trachea and penetrate sand gas accuse valve, be close to seted up on the molding cavity roof of positive clamp plate one side and penetrated the sand mouth, the lower extreme of penetrating a sand section of thick bamboo is connected with and penetrates the lower sand pipe that the sand mouth is linked together, be provided with the sand falling valve on the lower sand pipe.
As a further arrangement of the scheme, the positive pressure plate hydraulic pushing mechanism comprises a horizontally arranged positive pressure plate oil cylinder, the end part of the positive pressure plate oil cylinder is fixedly connected with the outer side surface of the positive pressure plate, and a horizontal limiting guide rod is further arranged between the base and the positive pressure plate.
As a further arrangement of the scheme, the back pressure plate overturning and pushing mechanism comprises a turnover frame, the back pressure plate is rotatably arranged at the upper end of the turnover frame, and a swinging connecting rod is arranged between the turnover frame and the back pressure plate.
When the vertical boxless automatic molding machine disclosed by the invention is used for producing thick sand mold castings, through preset molding, before sand shooting of a sand shooting cylinder, the piston rod of an oil pressure cylinder is controlled to shorten, under the action of the oil pressure cylinder, a movable sliding plate on a lifting plate moves downwards for a certain distance along a concave-shaped opening, then sufficient molding sand is shot into a molding cavity, at the moment, a groove formed by the concave-shaped opening and the movable sliding plate can be filled with the molding sand passively, then, when a positive pressure plate pushes a counter pressure plate to approach, the piston rod of the oil pressure cylinder extends to push the lifting plate to move upwards until the movable sliding plate moves upwards to be parallel to the bottom wall of the molding cavity, and a certain amount of molding sand is supplemented to the position below a counter pressure plate casting mold caused by blocking of a casting mold, so that qualified sand blocks are extruded.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a vertical boxless automatic molding machine which can automatically compensate and fill sand and compact when producing thick sand mold castings, and thoroughly solves the problem of sand shooting shadow of a lower cavity of the thick sand mold castings produced by the existing vertical molding machine, so that the vertical molding machine can produce castings requiring thicker sand blocks, unqualified sand blocks which are not compacted due to insufficient sand shooting caused by the sand shooting shadow can not be extruded, unqualified castings can be produced, and the qualification rate of the improved vertical boxless automatic molding machine for producing thick sand castings reaches 99%; the whole automatic compensation molding sand when producing thick sand mold casting is novel in structure, the whole set of automatic compensation is filled with the improvement process of sand compaction and is simple, but the improvement effect is excellent, the problem of shooting sand shadow is thoroughly solved, and the practicability is strong.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a front view of the present invention;
FIG. 2 is a schematic view of the internal plan structure of the molding chamber and the inner cavity of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention taken in a first instance A-A of FIG. 2;
fig. 4 is a schematic cross-sectional view of the invention in a second condition at a-a in fig. 2.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", and,
The terms "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like, refer to an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying drawings 1 to 4, in conjunction with the embodiments.
The invention discloses a vertical boxless automatic molding machine capable of automatically compensating sand washing compaction, which has a main structure shown in the attached drawing 1 and comprises a machine base 1, a sand shooting system 2, a positive pressure plate 3, a back pressure plate 4, a positive pressure plate hydraulic pushing mechanism 5 and a back pressure plate overturning pushing mechanism 6. A modeling cavity 7 is arranged on the machine base 1, the front end and the rear end of the modeling cavity 7 are vertical plates, and the left end and the right end of the modeling cavity are open. The sand shooting system 2 is arranged at the top end of a machine base 1 above a molding cavity 7, particularly the sand shooting system 2 is in the prior art and comprises a sand shooting cylinder 201 and an air storage bag 202, the sand shooting cylinder 201 and the air storage bag 202 are both fixedly arranged at the top end of the machine base 1, an air pipe 203 is connected between the sand shooting cylinder 201 and the air storage bag 202, a sand shooting air control valve is arranged on the air pipe 203, a sand shooting port 204 is arranged on the top wall of the molding cavity 7 close to one side of a positive pressure plate 3, the lower end of the sand shooting cylinder 204 is connected with a lower sand pipe communicated with the sand shooting port 204, a sand falling valve 205 is arranged on the lower sand pipe, and detailed description about other details of the sand shooting system 2 is omitted.
The back pressure plate 4 and the positive pressure plate 3 are respectively arranged at the left end and the right end of the molding cavity 7, casting molds 8 are arranged on the inner side surfaces of the positive pressure plate 3 and the back pressure plate 4, and the casting molds 8 can be detached and replaced according to the actual requirements of products.
The hydraulic pushing mechanism 5 in the invention is also the prior art, and comprises a horizontally arranged positive pressure plate oil cylinder 501, the end part of the positive pressure plate oil cylinder 501 is fixedly connected with the outer side surface of the positive pressure plate 3, a horizontal limiting guide rod 502 is also arranged between the base 1 and the positive pressure plate 3, and the horizontal limiting guide rod 502 can ensure the stable movement and no deviation of the positive pressure plate 3 in the process of pushing the positive pressure plate 501 by the positive pressure plate oil cylinder 501 to compact the molding sand, and other details of the sand shooting system 2 are not described in detail.
Its back pressure board upset pushing mechanism 6 is prior art also, and it includes a roll-over stand 601, rotates back pressure board 4 and sets up in the upper end of roll-over stand 601, is provided with swing connecting rod 602 between roll-over stand 601 and back pressure board, still sets up an hydro-cylinder (not drawn in the figure) that can promote roll-over stand 601 to remove simultaneously, and the setting of its clamp plate upset pushing mechanism 6 can rotate the back pressure board 4 of level setting in roll-over stand 601 top to perpendicular before compaction molding, because it is prior art, other details of clamp plate upset pushing mechanism 6 are not repeated.
In order to solve the problem of sand shooting shadow caused by sand blasting of the conventional vertical boxless automatic molding machine, referring to the attached drawing 2, an inner cavity 101 is formed at the lower end of a machine base 1 below a molding cavity 7, one or more oil hydraulic cylinders 9 are arranged in the inner cavity, and the top ends of piston rods of the one or more oil hydraulic cylinders 9 are commonly connected with a lifting plate 10. Meanwhile, a plurality of sunken ports 11 are formed in the bottom wall of the molding cavity 7 located right below the casting mold 8 mounted on the counter pressure plate 4 at intervals, in the actual design process, the sunken ports 11 can be arranged into long strips or other shapes (refer to fig. 3 and fig. 4), the long strip sunken ports are perpendicular to the front side and the rear side of the molding cavity 7, and the length and the width of the long strip sunken ports can be determined according to the actual situation. In addition, the number of the concave-shaped openings 11 can be set to 1 to 4 in the design process (refer to fig. 3 and 4).
The upper surface of the lifting plate 10 is provided with a movable sliding plate 12 corresponding to each concave opening 11, the shape and size of the movable sliding plate 12 are the same as those of the concave openings 11, and when the movable sliding plate 12 completely extends into the concave openings 11, the upper surface of the movable sliding plate 12 is parallel to the bottom wall of the modeling cavity 7, so that burrs can not appear due to gaps in the subsequent positive and negative pressing plate extrusion process.
Finally, the left end and the right end of the lifting plate 10 are provided with limiting sliding holes (not shown in the figure), the top wall of the inner cavity 101 arranged at the lower end of the machine base 1 is connected with two sliding guide rods 13 capable of penetrating through the corresponding limiting sliding holes, and the stability of the lifting plate 10 during up-and-down movement can be ensured through the action between the sliding guide rods 13 and the limiting sliding holes.
The invention relates to a concrete implementation application and a working principle:
when the vertical boxless automatic molding machine disclosed by the invention is used for compacting and molding sand, firstly, the counter pressure plate overturning and pushing mechanism 6 is used for horizontally overturning the counter pressure plate 4 to be vertical to a workbench surface on the base 1, and at the moment, the whole molding cavity 7 forms a sealed space under the action of the counter pressure plate 4 and the counter pressure plate 3.
Before the sand shooting system 2 shoots sand into the sealed molding cavity 7, the piston rod of the oil hydraulic cylinder 9 in the inner cavity 101 is controlled to be shortened, so that the lifting plate 10 moves downwards for a certain distance, and the movable sliding plate 12 which is originally just matched with the concave opening 11 moves downwards along the concave opening 11, so that the concave opening 11 and the movable sliding plate 12 form a groove. At this time, the sand shooting system 2 controls the sand shooting pneumatic control valve and the shakeout valve 205 to open to continuously discharge the molding sand in the sand shooting cylinder into the molding chamber 7, and the recess formed by the concave opening 11 and the movable slide plate 12 is passively filled with the molding sand during the process of the molding sand entering the molding chamber 7.
Then, the positive pressure plate hydraulic pushing mechanism 5 pushes the positive pressure plate 3 to the negative pressure plate 4, the piston rod of the hydraulic cylinder 9 is controlled to extend while the positive pressure plate 3 pushes, the lifting plate 10 moves upwards, the movable sliding plate 12 arranged on the upper surface of the lifting plate 10 can move upwards along the concave opening 11 to be parallel to the bottom wall of the molding cavity 7, so that all the molding sand filled in the groove is ejected out, and a certain amount of molding sand can be effectively supplemented to the area below the negative pressure plate mold due to blocking of a casting mold, so that a qualified sand mold is extruded.
After compaction and forming, the back pressure plate overturning and pushing mechanism 6 controls the back pressure plate 4 to rotate to the upper end of the overturning frame 601 and be in a horizontal state, then controls the positive pressure plate hydraulic pushing mechanism 5 to continue to extend for a certain distance, pushes out the sand mold after molding from the molding cavity 7, and finally restores the positive pressure plate hydraulic pushing mechanism 5 to the original state.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A vertical boxless automatic molding machine capable of automatically compensating sand washing compaction comprises a machine base, a sand shooting system, a positive pressure plate, a negative pressure plate, a positive pressure plate hydraulic pushing mechanism and a negative pressure plate overturning pushing mechanism, wherein a molding cavity is arranged on the machine base, the sand shooting system is arranged at the top end of the machine base above the molding cavity, the negative pressure plate and the positive pressure plate are respectively arranged at the left end and the right end of the molding cavity, casting molds are arranged on the inner side surfaces of the positive pressure plate and the negative pressure plate, the hydraulic pushing mechanism is connected with the positive pressure plate, the negative pressure plate overturning pushing mechanism is connected with a reaction plate, the vertical boxless automatic molding machine is characterized in that an inner cavity is arranged at the lower end of the machine base below the molding cavity, an oil hydraulic cylinder is arranged in the inner cavity, the top end of a piston rod of the oil hydraulic cylinder is connected with a lifting plate, a plurality of sunken openings are arranged, the upper surface of the lifting plate is provided with a movable sliding plate corresponding to each sunken port, the shape and size of the movable sliding plate are the same as those of the sunken ports, and when the movable sliding plate completely extends into the sunken ports, the upper surface of the movable sliding plate is parallel to the bottom wall of the modeling chamber.
2. The vertical boxless automatic molding machine with automatic compensation for sand washing and compaction as claimed in claim 1, wherein the shape of the concave port is a long strip, and the long strip concave port is arranged perpendicular to the front and back sides of the molding cavity.
3. The vertical boxless automatic molding machine with the function of automatically compensating sand washing compaction according to claim 2, wherein the bottom wall of the molding cavity is provided with 1-4 concave openings, and a plurality of the concave openings are arranged in the front and back of the bottom plate of the molding cavity.
4. The vertical boxless automatic molding machine with automatic compensation for sand washing and compaction as claimed in claim 1, wherein the left and right ends of the lifting plate are provided with limiting slide holes, and the top wall of the inner cavity is connected with two sliding guide rods capable of passing through the limiting slide holes.
5. The vertical boxless automatic molding machine capable of automatically compensating sand washing compaction according to claim 1, wherein the sand shooting system comprises a sand shooting cylinder and an air storage bag, the sand shooting cylinder and the air storage bag are both fixedly arranged at the top end of the base, an air pipe is connected between the sand shooting cylinder and the air storage bag, a sand shooting pneumatic control valve is arranged on the air pipe, a sand shooting opening is formed in the top wall of the molding cavity close to one side of the positive pressure plate, the lower end of the sand shooting cylinder is connected with a sand discharging pipe communicated with the sand shooting opening, and a sand discharging valve is arranged on the sand discharging pipe.
6. The vertical boxless automatic molding machine with automatic compensation for sand washing and compaction according to claim 1, characterized in that the positive pressure plate hydraulic pushing mechanism comprises a horizontally arranged positive pressure plate oil cylinder, the end of the positive pressure plate oil cylinder is fixedly connected with the outer side surface of the positive pressure plate, and a horizontal limiting guide rod is further arranged between the machine base and the positive pressure plate.
7. The vertical boxless automatic molding machine with automatic compensation for sand washing and compaction according to claim 1, characterized in that the counter plate overturning and pushing mechanism comprises a roll-over stand, the counter plate is rotatably arranged at the upper end of the roll-over stand, and a swinging connecting rod is arranged between the roll-over stand and the counter plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011266654.0A CN112404364A (en) | 2020-11-13 | 2020-11-13 | Vertical boxless automatic molding machine capable of automatically compensating sand washing compaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011266654.0A CN112404364A (en) | 2020-11-13 | 2020-11-13 | Vertical boxless automatic molding machine capable of automatically compensating sand washing compaction |
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| Publication Number | Publication Date |
|---|---|
| CN112404364A true CN112404364A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011266654.0A Withdrawn CN112404364A (en) | 2020-11-13 | 2020-11-13 | Vertical boxless automatic molding machine capable of automatically compensating sand washing compaction |
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| CN (1) | CN112404364A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042693A (en) * | 2021-03-03 | 2021-06-29 | 王小平 | Automatic horizontal extrusion device for clay sand molding |
| CN113134576A (en) * | 2021-04-21 | 2021-07-20 | 湖南忠心铸造有限公司 | Vertical parting flaskless shoot-squeeze molding machine |
-
2020
- 2020-11-13 CN CN202011266654.0A patent/CN112404364A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042693A (en) * | 2021-03-03 | 2021-06-29 | 王小平 | Automatic horizontal extrusion device for clay sand molding |
| CN113134576A (en) * | 2021-04-21 | 2021-07-20 | 湖南忠心铸造有限公司 | Vertical parting flaskless shoot-squeeze molding machine |
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Application publication date: 20210226 |
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