CN107321934B

CN107321934B - Sand molding production system is gone into in resin sand casting

Info

Publication number: CN107321934B
Application number: CN201710496823.1A
Authority: CN
Inventors: 吕小红; 苏迎利; 吴志清; 凡荣; 金奉焕; 祖明星
Original assignee: Jiangsu Salt Casting Co ltd
Current assignee: Jiangsu Salt Casting Co ltd
Priority date: 2017-06-26
Filing date: 2017-06-26
Publication date: 2023-05-26
Anticipated expiration: 2037-06-26
Also published as: CN107321934A

Abstract

The invention relates to a sand casting molding production system for resin sand, which comprises the following components: a discharging device; the forming equipment comprises a supporting plate frame, a plurality of guide posts arranged between the supporting plate frames, a first half die fixed on the supporting plate frame and a second half die movably arranged on the guide posts through a first adjusting mechanism and matched with the first half die, wherein the adjusting mechanism comprises a sliding sleeve sleeved on the guide posts, a sliding plate sleeved on the guide posts and connected with the sliding sleeve, a second cylinder arranged on the supporting plate frame and connected with the sliding plate for driving the sliding plate to slide on the guide posts, and a fixed plate arranged on the sliding sleeve for installing the second half die; and a plurality of groups of blanking devices. Therefore, as a subsequent casting forming die, automatic production is realized, the production efficiency is improved, and the labor intensity is reduced.

Description

Sand molding production system is gone into in resin sand casting

Technical Field

The invention belongs to the field of casting equipment, and particularly relates to a sand-in molding production system for resin sand casting.

Background

Sand casting is a casting process that produces castings in sand molds. Steel, iron and most nonferrous alloy castings are obtained by sand casting methods. Because the molding materials used for sand casting are cheap and easy to obtain, the casting mold is simple and convenient to manufacture, and is suitable for single-piece production, batch production and mass production of castings, and is a basic process in casting production for a long time. In order to make the manufactured sand mold and core have certain strength, the sand mold and the core are not deformed or damaged during carrying, shaping and pouring liquid metal, a molding sand binder is generally added in casting, and loose sand grains are bonded together to form molding sand. The binders used for the chemically hardened molding sand which are commonly used at present are synthetic resin, water glass and the like. The casting surface produced by the resin sand molding process has clear and smooth contour, high geometric precision and high dimensional precision; the production process is simple and easy to control, and is accepted and applied by casting enterprises more and more. The advanced process of resin sand is greatly popularized along with the continuous improvement of the quality requirements of mechanical products, including the improvement of the quality requirements of materials and dimensional accuracy, especially the improvement of the surface quality requirements.

The existing resin sand casting molding production line is generally simple in structure, single in function, low in production efficiency and high in labor intensity, and is difficult to meet increasingly high product requirements, and further profit margin of enterprises is difficult to improve.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a sand casting molding production system for resin sand.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a resin sand casting sand-in molding production system, comprising:

the discharging equipment comprises a supporting base, a plurality of groups of supporting frames which are adjustably arranged at the top of the supporting base, and a plurality of groups of sand feeding assemblies which are arranged on the supporting frames and correspond to the material bearing barrels; each group of sand feeding assembly comprises a feeding mechanism and an aligning mechanism which are matched, wherein the feeding mechanism comprises a cover body arranged on the supporting frame, a first feeding pipe arranged in the cover body and a first cylinder arranged at the top of the cover body and connected with the first feeding pipe; the alignment mechanism comprises a supporting suspension frame movably arranged on the cover body, a first supporting plate arranged at the bottom of the supporting suspension frame through a plurality of connecting rods, a limiting cover adjustably arranged at the bottom of the first supporting plate, and a second feeding pipe, wherein the lower end of the second feeding pipe is communicated with the limiting cover, and the upper end of the second feeding pipe extends to penetrate through the supporting suspension frame;

the forming equipment comprises a supporting plate frame, a plurality of first guide posts arranged between the supporting plate frames, a first half die fixed on the supporting plate frame and a second half die movably arranged on the first guide posts through a first adjusting mechanism and matched with the first half die, wherein the first adjusting mechanism comprises a sliding sleeve sleeved on the first guide posts, a sliding plate sleeved on the first guide posts and connected with the sliding sleeve, a second cylinder arranged on the supporting plate frame and connected with the sliding plate and used for driving the sliding plate to slide on the first guide posts, and a fixing plate arranged on the sliding sleeve and used for installing the second half die;

and each group of blanking equipment comprises a lifting table arranged on the ground, a conveying table arranged at the top of the lifting table and positioned below the second half die, and a foot pad table arranged at one side of the lifting table.

Optimally, the supporting frame is installed on the supporting base through a second adjusting mechanism, and the second adjusting mechanism comprises a plurality of first sliding rails fixed at the top of the supporting base, a plurality of mounting seats fixed at the top of the supporting base and positioned at two sides of the end parts of the first sliding rails, a plurality of screws penetrating through the supporting frame and the mounting seats and an adjusting hand wheel installed at the end parts of the screws.

Optimally, the feeding mechanism further comprises second sliding rails arranged on two outer side surfaces of the cover body, the aligning mechanism further comprises a lower roller arranged on the inner side surface of the supporting suspension frame and matched with the second sliding rails, an upper roller arranged on the inner side surface of the supporting suspension frame and positioned above the lower roller, a push plate arranged on the supporting suspension frame and the side surface of the supporting plate, and a third cylinder communicated with the push plate and used for driving the push plate to move linearly; and a plurality of guide posts which are connected with the limiting cover and sleeved with springs are arranged on the supporting plate in a penetrating manner.

Optimally, the first adjusting mechanism further comprises at least one group of fixed seats fixed on the sliding plate, at least one group of connecting plates arranged on the fixed plates, and at least one fourth cylinder, one end of which is pivotally connected with the connecting plates and is pivotally connected with the fixed seats.

Optimally, the lifting platform comprises a base plate, a top plate arranged above the base plate, a plurality of second supporting plates fixed between the base plate and the top plate, a first supporting rod with one end installed on the second supporting plate and the other end supported on the bottom surface of the top plate, a second supporting rod with one end installed on the second supporting plate and the other end supported on the base plate, and a fifth air cylinder fixed on the base plate and with the other end connected with the top plate, wherein the middle part of the first supporting rod is in pivot connection with the middle part of the second supporting rod.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the sand casting and molding production system, the discharging equipment and the molding equipment with the specific structures are matched, so that the resin sand contained in the feeding equipment can be input into the mold of the molding equipment for high-temperature fusion molding, and the resin sand is used as a subsequent casting and molding mold, so that automatic production is realized, the production efficiency is improved, and the labor intensity is reduced.

Drawings

FIG. 1 is a schematic diagram of a discharge apparatus of a resin sand casting sand-in molding production system of the present invention;

FIG. 2 is a schematic diagram of the structure of the discharging equipment, the forming equipment and the discharging equipment of the sand casting and molding production system of the invention;

FIG. 3 is a schematic diagram of the sand-in assembly of the resin sand casting sand-in molding production system of the present invention;

FIG. 4 is a schematic diagram of the molding equipment of the sand casting molding production system of the resin sand of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The resin sand casting sand-in molding production system shown in fig. 1 to 4 mainly comprises a discharging device, a molding device 3, a blanking device 4 and the like which are matched.

The discharging equipment mainly comprises a supporting base 21, a second adjusting mechanism 22, a supporting frame 23, a sand feeding assembly 24 and the like. The support base 21 is installed on the ground and is disposed at one side of the support column. The support frame 23 has a plurality of groups (two groups arranged at intervals in the present embodiment) and they are adjustably mounted on the top of the support base 21 by the second adjusting mechanism 22, and the second adjusting mechanism 22 includes a plurality of first slide rails 221 fixed on the top of the support base 21, a plurality of mounting seats 222 fixed on the top of the support base 21 and located on both sides of the ends of the first slide rails 221, a plurality of screws 223 penetrating the support frame 23 and the mounting seats 222, and corresponding adjusting handwheels 224 mounted on the ends of the screws 223. Thus, the supporting frame 23 can be driven to slide on the first sliding rail 221 by rotating the adjusting hand wheel 224 to drive the screw 223 to rotate, so as to adjust the interval between the two groups of supporting frames 23. The number of the sand feeding components 24 is consistent with that of the supporting frames 23, and the sand feeding components are respectively arranged on the supporting frames 23 and correspond to the material carrying barrels. Each group of sand feeding assemblies 24 comprises a feeding mechanism 241 and an aligning mechanism 242 which are matched, wherein the feeding mechanism 241 comprises a cover body 2411 arranged on the supporting frame 23, a first feeding pipe 2412 arranged in the cover body 2411 and a first cylinder 2414 arranged on the top of the cover body 2411 and connected with the first feeding pipe 2412; the alignment mechanism 242 includes a supporting hanger 2421 movably installed on the housing 2411 (the supporting hanger 2421 includes a hanger plate disposed below the housing 2411 and side plates disposed at both sides of the hanger plate and extending to both sides of the housing 2411), a first supporting plate 2420 installed at the bottom of the supporting hanger 2421 by a plurality of connection bars 2422, a spacing cap 2425 adjustably installed at the bottom of the first supporting plate 2420, and a second feed pipe 2429 having a lower end communicating with the spacing cap 2425 and an upper end extending to pass through the supporting hanger 2421; thus, when the second feeding pipe 2429 of the alignment mechanism 242 moves to correspond to the first feeding pipe 2412, the first cylinder 2414 operates to push the first feeding pipe 2412 to the second feeding pipe 2429 for alignment, and the blowing mechanism 243 operates to blow high pressure air into the limiting cover 2425 to blow the resin sand stored therein into the molding apparatus 3. The blowing mechanism 243 includes a high-pressure air tank 2431 fixed on the side of the support frame 23 and an air pipe 2432 with one end connected to the high-pressure air tank 2431 and the other end connected to the first feeding pipe 2412 in the housing 2411. The feeding mechanism 241 further comprises second sliding rails 2413 disposed on two outer sides of the cover body 2411, the alignment mechanism 242 further comprises a lower roller 2427 disposed on an inner side of the supporting suspension frame 2421 (i.e. an inner side of a side plate thereof) and matched with the second sliding rails 2413, an upper roller 2426 disposed on an inner side of the supporting suspension frame 2421 and above the lower roller 2427, a push plate 2423 mounted on the supporting suspension frame 2421 and the side surface of the first supporting plate 2420, and a third cylinder 2424 communicated with the push plate 2423 for driving the push plate 2423 to move linearly; the first support plate 2420 is provided with a plurality of second guide posts 2428 which are connected with the limiting cover 2425 and sleeved with springs, so that accurate weighing and transferring of the resin sand can be conveniently realized.

The molding apparatus 3 has a plurality of sets, the number of which is the same as the number of the support frames 23. Each of the forming apparatuses 3 is located below the discharging apparatus and is matched with the aligning mechanism 242, and includes a support plate frame 31, a plurality of first guide posts 32 installed between the support plate frames 31, a first half mold 34 fixed on the support plate frame 31, and a second half mold 35 movably installed on the first guide posts 32 through a first adjusting mechanism 36 and matched with the first half mold 34, the first adjusting mechanism 36 includes a sliding sleeve 365 sleeved on the guide posts 32, a sliding plate 361 sleeved on the first guide posts 32 and connected with the sliding sleeve 365, a second cylinder 364 installed on the support plate frame 31 and connected with the sliding plate 361 for driving the sliding plate to slide on the first guide posts 32, and a fixing plate 366 installed on the sliding sleeve 365 for installing the second half mold 35. At the beginning, the first half mould 34 and the second half mould 35 are closed, after the resin sand is filled in the first half mould 34, a plurality of electric heating rods arranged on the first half mould 35 are electrified to enable the resin sand to be molten, the electrification is stopped, the cooling and solidification are carried out, and then the second half mould 35 is pulled away from the first half mould 34. Accordingly, the second mold half 35 can be connected to the rotating mechanism such that the second mold half 35 can be rotated with respect to the fixed plate 366 so that it is changed from the vertical state to the horizontal state, thereby automatically feeding the molded resin sand mold to the blanking apparatus. The first adjusting mechanism 36 further comprises at least one set of fixing seats 362 fixed on the sliding plate 361, at least one set of connecting plates 367 arranged on the fixing plate 366, and at least one fourth cylinder 363 having one end pivotally connected to the connecting plates 367 and pivotally connected to the fixing seats 362, so that the second mold half 35 can be automatically opened and closed.

The blanking apparatus 4 is also of the same number as the forming apparatus 3 and comprises a lifting table 41 mounted on the ground, a transfer table 42 mounted on top of the lifting table 41 and located below the second mold half 35, and a foot rest table 43 placed on one side of the lifting table 41. The elevating platform 41 includes a base plate 411, a top plate 416 disposed above the base plate 411, a plurality of second support plates 412 fixed between the base plate 411 and the top plate 416, a first support rod 413 having one end mounted on the second support plate 412 and the other end supported on the bottom surface of the top plate 416, a second support rod 414 having one end mounted on the second support plate 412 and the other end supported on the base plate 411, and a fifth cylinder 415 fixed on the base plate 411 and the other end connected to the top plate 416, a middle portion of the first support rod 413 being pivotally connected to a middle portion of the second support rod 414. The fifth cylinder 415 is operated to drive the first support rod 413 and the second support rod 414 to rotate relatively, so that the height of the top plate 416 is adjusted, and the molding device 3 can be matched with the molding device for receiving the molded resin sand mold.

When the resin sand casting device is used, the resin sand casting production system can be matched with feeding equipment. The feeding equipment mainly comprises a storage mechanism, a conveying component, a material bearing barrel and the like. The storage mechanism comprises a first support frame and a storage hopper fixed on the first support frame; the device also comprises a supporting plate arranged at the inlet of the storage hopper and a filter screen supported on the supporting plate, so that larger particles in the resin sand can be removed; in the embodiment, the side surface of the storage hopper, which is arranged opposite to the material conveying assembly, is obliquely arranged, so that the residual amount of resin sand in the storage hopper can be reduced. The material conveying assembly comprises a support column, a feeding screw rod and a transmission mechanism, wherein the lower end of the support column is communicated with the storage hopper, the feeding screw rod is arranged in the support column, the transmission mechanism is connected with the feeding screw rod and used for driving the feeding screw rod to rotate (the transmission mechanism comprises an inclined gear ring fixed on the feeding screw rod, a gear shaft, a motor, a cover, a discharging pipe and a material distributing mechanism, the gear shaft is arranged on the support column, the motor is connected with the gear shaft through a belt, the cover is covered on the gear shaft and the motor), the discharging pipe is arranged on the support column and communicated with the support column, and the material distributing mechanism is communicated with the discharging pipe and comprises a material bearing pipe communicated with the discharging pipe and a plurality of material discharging branch pipes communicated with the material bearing pipe; the feeding assembly further comprises a first supporting seat (the first supporting seat is arranged on the upper part of the side surface of the supporting column) which is arranged on the side surface of the supporting column and used for supporting the transmission mechanism, and a second supporting seat (the second supporting seat is slightly shorter than the first supporting seat) which is arranged on the side surface of the supporting column and used for supporting the material bearing pipe. The plurality of material bearing barrels are respectively connected with the material outlet branch pipes and used for receiving resin sand; the side wall of the box body is provided with a material displaying window extending to the bottom of the box body.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. A resin sand casting sand-in molding production system, characterized in that it comprises:

the discharging device comprises a supporting base (21), a plurality of groups of supporting frames (23) adjustably installed on the top of the supporting base (21) and a plurality of groups of sand feeding assemblies (24) installed on the supporting frames (23); each group of sand feeding assemblies (24) comprises a feeding mechanism (241) and an aligning mechanism (242) which are matched, wherein the feeding mechanism (241) comprises a cover body (2411) arranged on the supporting frame (23), a first feeding pipe (2412) arranged in the cover body (2411) and a first cylinder (2414) arranged at the top of the cover body (2411) and connected with the first feeding pipe (2412); the alignment mechanism (242) comprises a supporting suspension frame (2421) movably mounted on the cover body (2411), a first supporting plate (2420) mounted at the bottom of the supporting suspension frame (2421) through a plurality of connecting rods (2422), a limiting cover (2425) adjustably mounted at the bottom of the first supporting plate (2420), and a second feeding pipe (2429) the lower end of which is communicated with the limiting cover (2425) and the upper end of which extends to pass through the supporting suspension frame (2421);

the support frame (23) is mounted on the support base (21) through a second adjusting mechanism (22), the second adjusting mechanism (22) comprises a plurality of first sliding rails (221) fixed at the top of the support base (21), a plurality of mounting seats (222) fixed at the top of the support base (21) and positioned at two sides of the end parts of the first sliding rails (221), a plurality of screw rods (223) penetrating through the support frame (23) and the mounting seats (222) and an adjusting hand wheel (224) mounted at the end parts of the screw rods (223);

the feeding mechanism (241) further comprises second sliding rails (2413) arranged on two outer side surfaces of the cover body (2411), the aligning mechanism (242) further comprises a lower roller (2427) arranged on the inner side surface of the supporting suspension frame (2421) and matched with the second sliding rails (2413), an upper roller (2426) arranged on the inner side surface of the supporting suspension frame (2421) and positioned above the lower roller (2427), a push plate (2423) installed on the side surfaces of the supporting suspension frame (2421) and the supporting plate (2420), and a third cylinder (2424) connected with the push plate (2423) and used for driving the push plate (2423) to move in a straight line; a plurality of second guide posts (2428) which are connected with the limiting cover (2425) in a penetrating way and sleeved with springs are arranged on the supporting plate (2420);

a plurality of groups of forming devices (3), each group of forming devices (3) is positioned below the discharging device and matched with the aligning mechanism (242), and comprises a supporting plate frame (31), a plurality of first guide posts (32) arranged between the supporting plate frames (31), a first half mould (34) fixed on the supporting plate frame (31), and a second half mould (35) movably arranged on the first guide posts (32) and matched with the first half mould (34) through a first adjusting mechanism (36), wherein the first adjusting mechanism (36) comprises a sliding sleeve (365) sleeved on the first guide posts (32), a sliding plate (361) sleeved on the first guide posts (32) and connected with the sliding sleeve (365), a second air cylinder (364) arranged on the supporting plate frame (31) and connected with the sliding plate (361) for driving the sliding plate to slide on the first guide posts (32), and a fixed plate (364) arranged on the sliding sleeve (365) for installing the second half mould (35);

and each group of blanking equipment (4) comprises a lifting table (41) arranged on the ground, a conveying table (42) arranged at the top of the lifting table (41) and positioned below the second half die (35), and a foot pad table (43) arranged at one side of the lifting table (41).

2. The resin sand casting sand-in molding production system of claim 1, wherein: the first adjusting mechanism (36) further comprises at least one group of fixing seats (362) fixed on the sliding plate (361), at least one group of connecting plates (367) arranged on the fixing plates (366), and at least one fourth cylinder (363) with one end pivotally connected with the connecting plates (367) and pivotally connected with the fixing seats (362).

3. The resin sand casting sand-in molding production system of claim 1, wherein: the lifting table (41) comprises a base plate (411), a top plate (416) arranged above the base plate (411), a plurality of second support plates (412) fixed between the base plate (411) and the top plate (416), a first support rod (413) with one end installed on the second support plates (412) and the other end supported on the bottom surface of the top plate (416), a second support rod (414) with one end installed on the second support plates (412) and the other end supported on the base plate (411), and a fifth air cylinder (415) fixed on the base plate (411) and with the other end connected with the top plate (416), wherein the middle part of the first support rod (413) is in pivot connection with the middle part of the second support rod (414).