CN117773019A - Molding die and molding method for casting sand box of sewer well grate - Google Patents

Abstract

The invention relates to the technical field of casting sand box forming molds, in particular to a molding mold and a molding method for a drain well grate casting sand box. The invention provides a molding die and a molding method for a sand box of a sewer well grate casting, wherein the molding sand is uniformly stressed during pressing. The utility model provides a drainage well comb casting sand box forming die, includes sand box, support frame, dead lever, cylinder and sticiss, the sand box rotation type is connected with the support frame, the sand box rigid coupling has the dead lever, the dead lever rigid coupling has the cylinder, the telescopic link top rigid coupling of cylinder has the sticiss. According to the invention, the cylinder is started to drive the compacting piece to move to compact the molding sand, and the inclined rod is driven to move during the descending of the compacting piece, so that the inclined rod extrudes the scraping piece to move backwards to scrape the overflowed molding sand, and the surface of the molding sand is kept flat, so that uneven molding sand can be avoided, uneven stress of the molding sand can be caused during compacting, the compacting flatness is improved, and the quality of a compacted mold is further ensured.

Description

Molding die and molding method for casting sand box of sewer well grate

Technical Field

The invention relates to the technical field of casting sand box forming molds, in particular to a molding mold and a molding method for a drain well grate casting sand box.

Background

Most of cities rely on a drainage well to solve the drainage problem, and the drainage well can solve the problem of road surface ponding in rainy seasons, so that people can travel conveniently. The well lid of the sewer well has two kinds of circular well lid and well grate, and well lid and well grate can also guarantee people's personal safety when the drainage to avoid the road surface ponding to influence people's sight, prevent that people from falling into the well in, and circular well lid's drainage ability is limited, is blocked by impurity easily, and the drainage ability of well grate is stronger, can avoid filth and debris to get into the sewer well, consequently, the sewer well mouth sets up well grate in order to block filth generally.

At present, a commonly used sewer well grate is mainly formed by pouring a sand box, firstly, a well grate mould is required to be manufactured, the well grate mould is placed in the sand box, then molding sand is filled, the molding sand is compacted, the molding sand is printed out of a mould of the well grate, then the well grate mould is taken out, pouring solution is poured into a groove of the sand box, the well grate can be obtained after cooling, during the manufacturing process of the mould of the well grate, the molding sand is required to be compacted, otherwise, the molding sand is loose, the printed mould is easy to loosen too much, the quality of the well grate is affected, when the molding sand is compacted, the sand is compacted manually, the problem of unbalanced compacting force can occur, the manufactured mould is deep and shallow, the follow-up demoulding of the well grate mould is affected, and the pouring quality of the well grate is affected.

In view of the above, it is necessary to develop a molding die and a molding method for molding sand casting of a drain well grate with uniform stress during pressing.

Disclosure of Invention

Aiming at overcoming the defect that the pressing force is unbalanced when molding sand is pressed manually in the prior art, the invention provides a molding die and a molding method for a molding box of a sewer well grate, which are uniform in stress when molding sand is pressed.

In order to achieve the above object, the present invention is realized by the following scheme: the utility model provides a drainage well comb casting sand box forming die, includes sand box, support frame, dead lever, cylinder and sticiss the piece, the sand box rotation type is connected with the symmetry setting the support frame, the sand box rigid coupling has the dead lever, the dead lever rigid coupling has the cylinder, the telescopic link top rigid coupling of cylinder has the sticiss the piece.

In a preferred embodiment of the invention, the sand box further comprises a first sliding rail, a first compression spring, a scraping piece and a diagonal rod, wherein the first sliding rail is fixedly connected to one side, far away from the air cylinder, of the sand box, the scraping piece is connected in the first sliding rail in a sliding manner, the first compression spring is connected between the scraping piece and the inner wall of the first sliding rail, and the diagonal rod is fixedly connected to the pressing piece.

In a preferred embodiment of the invention, the inclined rod is in contact with the scraping element, the inclined rod moves to press the scraping element to move, and the scraping element scrapes the molded sand.

In a preferred embodiment of the invention, the device further comprises a convex rod, a second sliding rail, a knocking rod and an extension spring, wherein the convex rod is fixedly connected to one side of the scraping part close to the air cylinder, the second sliding rail which is uniformly arranged is fixedly connected to one side of the sand box close to the air cylinder, the knocking rod is slidably connected in the uniformly arranged second sliding rail, and the extension spring is connected between the uniformly arranged knocking rod and the inner wall of the adjacent second sliding rail.

In a preferred embodiment of the present invention, the protrusion movement is in contact with the knock bar, and the protrusion movement presses the knock bar movement, and the knock bar movement knocks the flask.

In a preferred embodiment of the invention, the sand box further comprises a guide rod, a convex plate and a threaded rod, wherein the guide rod is arranged symmetrically in a sliding mode, the convex plate is fixedly connected to one side, opposite to the guide rod, of the symmetrically arranged guide rod, the threaded rod is connected to one side, far away from the guide rod, of the symmetrically arranged convex plate in a rotating mode, and the threaded rod is connected with the sand box in a threaded mode.

In a preferred embodiment of the present invention, the mold further includes a third slide rail, a limiting member, and a second compression spring, the sand box is fixedly connected with the third slide rail which is symmetrically disposed, the limiting members are slidably connected in the third slide rail which is symmetrically disposed, and the second compression spring is connected between the limiting members which are symmetrically disposed and the adjacent third slide rail.

In a preferred embodiment of the invention, the bottom of the limiting member is beveled.

In a preferred embodiment of the invention, the sand box further comprises fourth sliding rails, third compression springs and supporting plates, wherein the fourth sliding rails are symmetrically arranged and fixedly connected with the sand boxes, the supporting plates are connected between the similar fourth sliding rails in a sliding mode, and the third compression springs are connected between the inner walls of the symmetrically arranged fourth sliding rails and the adjacent supporting plates.

A method for casting a sand box forming die for a sewer well grate comprises the following steps:

s1: firstly, placing a well grate model on a forming bottom plate, and then placing the sand box on a workbench to be in contact with the forming bottom plate, so that the sand box covers the well grate;

s2: secondly, filling molding sand into the sand box;

s3: then starting the air cylinder to drive the compacting piece to move to compact the molding sand;

s4: during pressing, the pressing piece drives the inclined rod to move to press the scraping piece to move so as to scrape redundant molding sand, and the pressing piece is convenient to press the molding sand;

s5: during scraping, the scraping piece drives the convex rod to move and squeeze the knocking rod, so that the knocking rod knocks the sand box, and the sand box vibrates to enable molding sand to be compacted;

s6: finally, the sand box is moved and separated from the workbench, the sand box is turned over, and the well grate model is taken out of the molding sand manually.

The invention has at least one of the following advantages: according to the invention, the cylinder is started to drive the pressing piece to move downwards to press the molding sand, and the inclined rod is driven to move downwards during the descending of the pressing piece, so that the inclined rod extrudes the scraping piece to move backwards to scrape the overflowed molding sand, and the surface of the molding sand is kept flat, thus the uneven molding sand can be avoided, the uneven stress of the molding sand can be caused during pressing, the pressing evenness can be improved, and the quality of a pressed mold can be further ensured.

The knocking rod is extruded through the protruding rod to move, and under the action of the extension spring, the knocking rod is used for knocking the sand box, so that the sand box is vibrated, molding sand in the sand box can be more compact, the problem that when a well grate model is taken, the molding sand is too loose and can damage a printed mold, and the manufactured mold needs to be repaired manually, so that trouble is added.

The convex plate is driven to move in opposite directions through the rotary threaded rod, so that the convex plate slightly protrudes the inner wall of the sand box, and then the sand box is filled with molding sand, so that the convex plate can clamp the molding sand after the molding sand is compacted, the effect of increasing friction force can be achieved, resistance is added to the molding sand, and the possibility that the molding sand can fall out is reduced.

Clamping is carried out to the molding bottom plate through the limiting piece, so that the sand box can be fixed, the stability of the sand box is improved, the sand box is prevented from moving and being deviated from the molding bottom plate, molding sand is prevented from leaking, the compactness of the molding sand is influenced, and the follow-up pouring effect is further influenced.

Under the reset action of the third compression spring, the supporting plate is driven to move in opposite directions to shade the bottom of the sand box, so that the molding sand can be supported, and the possibility that the molding sand can fall out is reduced.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of a partial perspective structure of the present invention.

Fig. 3 is a schematic perspective view of the fixing rod, the cylinder, the pressing piece and other parts of the invention.

Fig. 4 is a schematic perspective view showing a cross-section of the first compression spring, the scraper and the diagonal member of the present invention.

Fig. 5 is a schematic perspective view of the male rod, the second slide rail, the knocking rod and other components of the present invention.

FIG. 6 is a schematic perspective view of the second rail, the striking rod, the tension spring, and other components of the present invention in cross-section.

Fig. 7 is a schematic perspective view of the guide bar, the convex plate, the threaded rod and other parts according to the present invention.

Fig. 8 is a schematic partial perspective view of the third rail and the second compression spring of the present invention.

Fig. 9 is a schematic perspective view of the fourth rail, the third compression spring, the support plate, and the like according to the present invention.

Fig. 10 is a schematic view showing a partial perspective structure of a third compression spring and a support plate, etc. according to the present invention.

Wherein: 1-sand box, 101-support frame, 2-fixed rod, 3-cylinder, 4-pressure piece, 5-first slide rail, 6-first compression spring, 7-scraping piece, 8-diagonal rod, 9-protruding rod, 10-second slide rail, 11-strike pole, 12-extension spring, 13-guide bar, 14-protruding board, 15-threaded rod, 16-third slide rail, 17-restriction piece, 18-second compression spring, 19-fourth slide rail, 20-third compression spring, 21-backup pad.

Detailed Description

The invention will be further illustrated by the following description of specific examples, which are given by the terms such as: setting, mounting, connecting are to be construed broadly, and may be, for example, fixed, removable, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1: referring to fig. 1-4, the molding die for casting the sand box of the sewer grate comprises a sand box 1, a supporting frame 101, a fixing rod 2, an air cylinder 3 and a compacting piece 4, wherein the front side and the rear side of the sand box 1 are respectively and rotatably connected with the supporting frame 101, the fixing rod 2 is fixedly connected to the left side of the sand box 1, the air cylinder 3 is fixedly connected to the left side of the fixing rod 2, and the compacting piece 4 is fixedly connected to the top of a telescopic rod of the air cylinder 3.

Still including first slide rail 5, first compression spring 6, scrape movable part 7 and diagonal bar 8, sand box 1 upper right side rigid coupling has first slide rail 5, sliding connection has in the first slide rail 5 scrape movable part 7, scrape movable part 7 with be connected with between the first slide rail 5 inner wall first compression spring 6, press movable part 4 upper right side rigid coupling has diagonal bar 8, diagonal bar 8 lower part with scrape movable part 7 upper portion contact.

When in use, the required forming bottom plate is firstly placed on a workbench, then the well grate model is placed on the forming bottom plate, then the sand box 1 is placed on the workbench, so that the sand box 1 covers the well grate, in order to avoid uneven stress during sand pressing, the cylinder 3 can be started, the telescopic rod of the cylinder 3 contracts to drive the compressing piece 4 to move downwards to press the sand, the inclined rod 8 is driven to move downwards during the descending of the compressing piece 4, so that the inclined rod 8 extrudes the scraping piece 7 to move backwards to scrape overflowed sand, the first compression spring 6 is compressed, so that the sand can be leveled, the pressed flatness is improved, the sand is prevented from being unevenly influenced, and after the pressing is finished, the extension of the telescopic rod of the air cylinder 3 is controlled to drive the compressing piece 4 to move upwards for resetting, then the inclined rod 8 is driven to move upwards for resetting, the first compression spring 6 is reset, the scraping piece 7 is driven to move forwards for resetting, then supplementary molding sand is added according to the depth of the molding sand until the molding sand in the sand box 1 is filled, so that when the molding sand is pressed, the molding sand is uniformly stressed, the quality of a pressed mold can be ensured, the support frame 101 is moved, the support frame 101 drives the sand box 1 to leave a workbench, a well grate model is separated from a forming bottom plate, the sand box 1 is turned over for 180 degrees, then the well grate model is taken out, casting is performed finally, after a finished product is cooled, the finished product is taken out, and then the sand box 1 is reversely rotated for 180 degrees for resetting.

Example 2: on the basis of embodiment 1, please refer to fig. 1 and fig. 5-10, further comprising a protruding rod 9, a second sliding rail 10, a striking rod 11 and a tension spring 12, wherein the protruding rod 9 is fixedly connected to the left side of the scraping member 7, six second sliding rails 10 are fixedly connected to the left upper side of the sand box 1, the striking rod 11 is slidably connected in each second sliding rail 10, the protruding rod 9 moves to be in contact with the striking rod 11, and the tension spring 12 is connected between each striking rod 11 and the inner wall of the adjacent second sliding rail 10.

In order to ensure compactness of molding sand in the sand box 1 so as to prevent the molding sand from loosening and influencing pouring effect, when the scraping piece 7 moves backwards, the convex rod 9 is driven to move backwards, the convex rod 9 is extruded to move leftwards by the knocking rod 11, the extension spring 12 is stretched, when the convex rod 9 continues to move backwards to be separated from the knocking rod 11, the extension spring 12 is reset and drives the knocking rod 11 to move rightwards to reset, so that the knocking rod 11 is used for knocking the sand box 1, and further the sand box 1 is vibrated, so that molding sand in the sand box 1 is more compact, and a printed mold is prevented from being damaged due to excessive loosening of the molding sand when a well grate model is taken, so that manual repair is required, and trouble is added.

The sand box is characterized by further comprising guide rods 13, convex plates 14 and threaded rods 15, wherein the front side and the rear side of the left upper portion of the sand box 1 are both connected with the guide rods 13 in a sliding mode, the inner sides of the guide rods 13 are fixedly connected with the convex plates 14, the outer sides of the right portions of the convex plates 14 are both connected with the threaded rods 15 in a rotating mode, and the threaded rods 15 are both connected with the sand box 1 in a threaded mode.

In order to avoid sand box 1 when removing with the workstation separation, the molding sand in the sand box 1 can unexpected fall out, can increase the molding sand with frictional force between the sand box 1, manual rotation threaded rod 15, threaded rod 15 drives flange 14 moves in opposite directions for flange 14 slightly protrudes sand box 1 inner wall, later refills the molding sand, so, after the molding sand is compacted, flange 14 can block the molding sand, thereby can reach the effect of increase frictional force, add the resistance for the molding sand, reduce the possibility that the molding sand can fall out.

The sand box is characterized by further comprising third sliding rails 16, limiting pieces 17 and second compression springs 18, wherein the left side and the right side of the lower portion of the sand box 1 are fixedly connected with the third sliding rails 16, the limiting pieces 17 are connected in the two third sliding rails 16 in a sliding mode, the bottoms of the limiting pieces 17 are inclined planes, and the second compression springs 18 are connected between the two limiting pieces 17 and the adjacent third sliding rails 16.

In order to ensure the stability of the sand box 1, the sand box 1 may be fixed, when the sand box 1 is placed on a forming bottom plate, the limiting piece 17 is in contact with the forming bottom plate, the limiting piece 17 is pressed to move outwards, the second compression spring 18 is compressed, so that the limiting piece 17 clamps the forming bottom plate, and the sand box 1 may be fixed, so that the sand box 1 is prevented from moving and being offset from the forming bottom plate, thereby causing sand leakage, affecting the compactness of the sand, and when the sand box 1 is removed, the limiting piece 17 is separated from the forming bottom plate, and the second compression spring 18 resets to drive the limiting piece 17 to move inwards to reset.

The sand box is characterized by further comprising fourth slide rails 19, third compression springs 20 and support plates 21, wherein two fourth slide rails 19 are fixedly connected to the front side and the rear side of the sand box 1, the support plates 21 are connected between the two fourth slide rails 19 on the front side and between the two fourth slide rails 19 on the rear side in a sliding mode, and the third compression springs 20 are connected between the inner walls of each fourth slide rail 19 and the adjacent support plates 21.

In order to avoid molding sand can fall out when sand box 1 leaves the workstation, can be right sand box 1 bottom shelters from, when will sand box 1 contacts with the shaping base, need earlier with backup pad 21 pulls open to the outside, third compression spring 20 is compressed, and is convenient sand box 1 contacts with the shaping base, works as sand box 1 separates with the shaping base, third compression spring 20 resets, drives backup pad 21 moves in opposite directions and resets for backup pad 21 keeps off sand box 1 bottom, so, alright support the molding sand, reduce the possibility that the molding sand can fall out.

Example 3: on the basis of the embodiment 2, a method for casting a sand box forming die by a drain grate comprises the following steps:

s1: firstly, placing a well grate model on a forming bottom plate, and then placing the sand box 1 on a workbench to be in contact with the forming bottom plate, so that the sand box 1 covers the well grate;

s2: secondly, filling molding sand into the sand box 1;

s3: then, starting the air cylinder 3 to drive the compacting piece 4 to move so as to compact the molding sand;

s4: during pressing, the pressing piece 4 drives the inclined rod 8 to move so as to press the scraping piece 7 to move so as to scrape redundant molding sand, so that the pressing piece 4 can press the molding sand conveniently;

s5: during scraping, the scraping piece 7 drives the convex rod 9 to move and squeeze the knocking rod 11, so that the knocking rod 11 knocks the sand box 1, and the sand box 1 vibrates to tighten molding sand;

s6: finally, the sand box 1 is moved and separated from the workbench, the sand box 1 is turned over, and the well grate model is taken out of the molding sand manually.

The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. All equivalents and alternatives falling within the spirit of the invention are intended to be included within the scope of the invention. What is not elaborated on the invention belongs to the prior art which is known to the person skilled in the art.

Claims (10)

1. The utility model provides a drain comb casting sand box forming die, its characterized in that, including sand box (1), support frame (101), dead lever (2), cylinder (3) and tight casting piece (4), sand box (1) rotation type is connected with symmetrical setting support frame (101), sand box (1) rigid coupling has dead lever (2), dead lever (2) rigid coupling has cylinder (3), the telescopic link top rigid coupling of cylinder (3) has tight casting piece (4).

2. The molding die for casting the sand box of the sewer well grate according to claim 1, further comprising a first sliding rail (5), a first compression spring (6), a scraping piece (7) and a diagonal rod (8), wherein the first sliding rail (5) is fixedly connected to one side, far away from the air cylinder (3), of the sand box (1), the scraping piece (7) is connected to the first sliding rail (5) in a sliding manner, the first compression spring (6) is connected between the scraping piece (7) and the inner wall of the first sliding rail (5), and the diagonal rod (8) is fixedly connected to the pressing piece (4).

3. The molding die for casting the sand box of the sewer well grate according to claim 2, wherein the inclined rod (8) is in contact with the scraping piece (7), the inclined rod (8) moves to press the scraping piece (7) to move, and the scraping piece (7) scrapes the molded sand.

4. The molding die for casting the sand box of the sewer well grate according to claim 3, further comprising a convex rod (9), a second sliding rail (10), a knocking rod (11) and an extension spring (12), wherein the convex rod (9) is fixedly connected to one side, close to the air cylinder (3), of the scraping piece (7), the second sliding rail (10) which is uniformly arranged is fixedly connected to one side, close to the air cylinder (3), of the sand box (1), the knocking rod (11) is uniformly connected to the second sliding rail (10) in a sliding manner, and the extension spring (12) is connected between the knocking rod (11) which is uniformly arranged and the inner wall of the second sliding rail (10) which is adjacent to the knocking rod.

5. The molding die for casting a sand box for a sewage well grate according to claim 4, wherein the protruding rod (9) moves to be in contact with the knocking rod (11), the protruding rod (9) moves to press the knocking rod (11) to move, and the knocking rod (11) moves to knock the sand box (1).

6. The molding die for casting the sand box of the sewer well grate according to claim 5, further comprising a guide rod (13), a convex plate (14) and a threaded rod (15), wherein the sand box (1) is connected with the guide rod (13) which is symmetrically arranged, the convex plate (14) is fixedly connected to one opposite side of the guide rod (13) which is symmetrically arranged, the threaded rod (15) is connected to one side, which is far away from the guide rod (13), of the convex plate (14) which is symmetrically arranged in a rotating mode, and the threaded rod (15) which is symmetrically arranged is in threaded connection with the sand box (1).

7. The molding die for casting the sand box of the sewer well grate according to claim 6, further comprising a third sliding rail (16), limiting pieces (17) and a second compression spring (18), wherein the third sliding rail (16) which is symmetrically arranged is fixedly connected with the sand box (1), the limiting pieces (17) are slidably connected in the third sliding rail (16) which is symmetrically arranged, and the second compression spring (18) is connected between the limiting pieces (17) which are symmetrically arranged and the adjacent third sliding rail (16).

8. A moulding mould for a casting flask for a sewer well grate according to claim 7, characterized in that the bottom of the restriction member (17) is inclined.

9. The molding die for casting the sand box of the sewer well grate according to claim 8, further comprising a fourth sliding rail (19), a third compression spring (20) and a supporting plate (21), wherein the fourth sliding rail (19) which is symmetrically arranged is fixedly connected with the sand box (1), the supporting plate (21) is connected between the similar fourth sliding rails (19) in a sliding manner, and the third compression spring (20) is connected between the inner wall of the fourth sliding rail (19) which is symmetrically arranged and the adjacent supporting plate (21).

10. A molding method of a molding sand box for a drain grate, which uses the molding die for the molding sand box for the drain grate according to any of claims 1 to 9, and is characterized by comprising the following steps:

s1: firstly, placing a well grate model on a forming bottom plate, and then placing the sand box (1) on a workbench to be in contact with the forming bottom plate, so that the sand box (1) covers the well grate;

s2: secondly, filling molding sand into the sand box (1);

s3: then, starting the air cylinder (3) to drive the compressing piece (4) to move so as to compress the molding sand;

s4: during pressing, the pressing piece (4) drives the inclined rod (8) to move so as to press the scraping piece (7) to scrape redundant sand, so that the pressing piece (4) is convenient for pressing the sand;

s5: during scraping, the scraping piece (7) drives the convex rod (9) to move and squeeze the knocking rod (11), so that the knocking rod (11) knocks the sand box (1), and the sand box (1) vibrates to enable molding sand to be compacted;

s6: finally, the sand box (1) is moved to be separated from the workbench, the sand box (1) is turned over, and the well grate model is taken out from the molding sand manually.