Double-station molding machine

Abstract

A double-station molding machine, comprising two sand box assemblies (10a, 10b) used for molding sand molds; a sand box driving part (20) connected to a base and used for controlling the sand box assemblies (10a, 10b) to move to a sand shooting part (40) so as to be filled with sand; a rotating part (90) connected to the base and used for supporting the two sand box assemblies (10a, 10b), switching the two sand box assemblies (10a, 10b) and conveying same to the sand box driving part (20); a compaction part (30) connected to the base and used for sealing two ends of each of the sand box assemblies (10a, 10b) that have been filled with sand by the sand shooting part (40) and compacting the filling sand into sand molds; and a box poking part (60) connected to the base and used for poking the sand molds in the sand box assemblies (10a, 10b) to a sand mold bearing part (70). The double-station structure increases the molding speed, and occupies less actual stations.

Description

A double-station molding machine Technical Field

[0001] The present invention relates to the field of molding equipment, and more particularly to a double-station molding machine. Background Art

[0002] The molding machine is a casting equipment used to make sand molds. Its main functions are: filling sand, filling loose sand molds into the sand box; compacting the sand mold, making the loose sand molds in the sand box compacted by different methods such as vibration, vibration pressure, and shot pressure, so that the sand molds have the necessary strength during transportation and pouring; demolding, using different mechanisms to remove the pattern from the compacted sand mold.

[0003] The molding machine in the prior art has the following shortcomings when in use:

[0004] Most of the existing double-station molding machines are equipped with two independent molding machines side by side to achieve double-station high-speed molding, which occupies many sand box stations and has low actual processing efficiency. In addition, when performing inspection, core setting, purging and other operations on the outside of the sand mold, the efficiency of internal molding is affected.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide a double-station molding machine, which effectively solves the problems in the prior art.

[0007] To achieve the above-mentioned objectives, the present application provides a double-station molding machine, comprising: two groups of sand box assemblies for molding sand molds; a sand box driving part, connected to the base, for controlling the movement of the sand box assembly to the sand shooting part to fill sand; a rotating part, connected to the base, for supporting the two groups of sand box assemblies and switching and transporting the two groups of sand box assemblies to the sand box driving part; a compacting part, connected to the base, for closing both ends of the sand box assembly filled with sand through the sand shooting part, and compacting the filled sand into a sand mold; a box poking part, connected to the base, for poking the sand mold in the sand box assembly out to the sand mold receiving part.

[0008] Optionally, the two groups of sand boxes have the same structure, both including: an upper sand box, a lower sand box and a guide rod; the upper sand box is fixed on the guide rod, the lower sand box slides on the guide rod, and a convex ring is provided at the bottom of the guide rod for limiting the bottom of the lower sand box.

[0009] Optionally, the upper flask is provided with an upper flask connecting pin, an upper flask connecting sleeve and an upper flask spring ejection pin; the lower flask is provided with a lower flask connecting pin, a lower flask connecting sleeve and a lower flask spring ejection pin.

[0010] Optionally, the rotating part includes: a frame connected to the base; a rotating shaft rotates on the frame, one end of the rotating shaft is connected to one end of the swing arm, and the other end of the swing arm is connected to a rotating cylinder mounted on the frame or the base; the other end of the rotating shaft is connected to a rotating table, and two supporting brackets for supporting two groups of sand boxes are relatively arranged on the rotating table, and each supporting bracket is provided with a plurality of upper box connecting pins that can be inserted into the upper box connecting sleeve and a plurality of lower box connecting pins that can be inserted into the lower box connecting sleeve.

[0011] Optionally, the flask drive unit includes an upper flask seat and a lower flask seat; both the upper flask seat and the lower flask seat slide on two guide rods, which are relatively fixed on the rotating unit; the upper flask seat is connected to a flask lifting cylinder mounted on the rotating unit; the upper flask seat and the lower flask seat are connected via a lower flask opening and closing cylinder; the rotating unit rotates on the base via a hinge shaft and is connected to a flip cylinder mounted on the base;

[0012] Optionally, the upper sand box seat is provided with a plurality of upper box connecting sleeves that can be plugged into and matched with the upper box connecting pins; the lower sand box seat is provided with a plurality of lower box connecting sleeves that can be plugged into and matched with the lower box connecting pins; the lower box opening and closing cylinder drives the lower sand box seat to move toward the upper sand box seat so that when the upper sand box, the mold plate and the lower sand box are pressed together, the upper box spring demolding pin and the lower box spring demolding pin are compressed, the upper box connecting pin and the lower box connecting pin are respectively connected to the upper box connecting sleeve and the lower box connecting sleeve, and the upper box connecting sleeve and the lower box connecting sleeve are respectively separated from the upper box connecting pin and the lower box connecting pin.

[0013] Optionally, the compacting part includes a lower compacting plate and an upper compacting plate arranged relatively to each other, so as to seal both sides of the lower sand box and the upper sand box when the sand inlet of the sand box is aligned with the sand shooting part for sand injection, and to compact the sand filled into the sand box; the lower compacting plate is connected to the base through a lower compacting cylinder, and the upper compacting plate is connected to the base through an upper compacting cylinder.

[0014] Optionally, the lower compaction plate slides with the guide portion on the base; the upper compaction plate slides with the guide portion on the base; the peripheries of the lower compaction plate and the upper compaction plate are both provided with seals so that they can slide sealably in the lower sand box and the upper sand box to prevent sand from leaking out.

[0015] Optionally, the box-poking part includes a frame mounted on a base; a box-poking cylinder and an upper sand box lifting cylinder are mounted on the frame; the movable end of the upper sand box lifting cylinder is connected to a lifting claw, so as to grab the upper sand box away from the sand box driving part through the lifting claw, and drive the upper sand box to perform lifting and lowering movements; the movable end of the box-poking cylinder is connected to a box-poking plate, so as to poke the sand molds in the upper sand box and the lower sand box out to the sand mold receiving part through the box-poking plate.

[0016] Optionally, the box-poking part also includes a guide part and a guide part, and the structure of the guide part and the guide part is the same as the structure of the guide part and the guide part; the guide sleeve of the guide part is fixed on the frame, and the guide shaft of the guide part is connected to the box-poking plate; the guide sleeve of the guide part is fixed on the frame, and the guide shaft of the guide part is connected to the lifting claw.

[0017] Optionally, the sand mold receiving part includes a receiving plate, which is mounted on the secondary lifting cylinder, the secondary lifting cylinder is mounted on the lifting platform, the lifting platform is mounted on the first-level lifting cylinder, and the first-level lifting cylinder is mounted on the base; the receiving plate is provided with a plurality of receiving sleeves that can be plugged into and matched with the lower box connecting pins.

[0018] Optionally, the sand mold receiving part also includes a primary guide part and a secondary guide part; the guide sleeve of the primary guide part is fixed on the base, and the guide shaft of the primary guide part is connected to the lifting platform; the guide sleeve of the secondary guide part is fixed on the lifting platform, and the guide shaft of the secondary guide part is connected to the receiving plate.

[0019] The beneficial effects of the present invention are:

[0020] A double-station molding machine of the present invention is internally provided with two groups of sand box assemblies that can be used for switch molding. When molding, the sand box assemblies can be intermittently transported to the sand box driving part by the rotating part, and the two groups of sand box assemblies are intermittently transported to the sand shooting part by the sand box driving part for molding. After one group of molding is completed, it can be transported to the outside for sand mold inspection, core setting, purging and other processing. At the same time, the other group of sand box assemblies is transported to the sand shooting part for molding. The molding work is divided into two work operations through the double-station structure, which can increase the molding speed and actually occupy fewer workstations. In addition, inspection, core setting, purging and other operations on the outside of the sand mold will not affect the internal molding and will not affect the cycle time, and the external operating station is far away from the internal flipping and sand shooting operation, which improves the working environment.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] FIG1 is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0024] FIG2 is a structural diagram of a sand box assembly according to an embodiment of the present invention;

[0025] FIG3 is a second structural diagram of a sand box assembly according to an embodiment of the present invention;

[0026] FIG4 is a structural schematic diagram of a sand box driving portion according to an embodiment of the present invention;

[0027] FIG5 is a second structural diagram of a sand box driving portion provided by an embodiment of the present invention;

[0028] FIG6 is a first structural diagram of a compacting unit according to an embodiment of the present invention;

[0029] FIG7 is a second structural diagram of a compacting portion provided by an embodiment of the present invention;

[0030] FIG8 is a first structural diagram of a box-opening portion provided by an embodiment of the present invention;

[0031] FIG9 is a second structural diagram of the box portion provided by an embodiment of the present invention;

[0032] FIG10 is a structural schematic diagram of a sand mold receiving portion according to an embodiment of the present invention;

[0033] FIG11 is a second structural diagram of a sand mold receiving portion provided by an embodiment of the present invention;

[0034] FIG12 is a first structural diagram of a rotating portion provided by an embodiment of the present invention;

[0035] FIG13 is a second structural diagram of the rotating portion provided in an embodiment of the present invention.

[0036] Icons: Sand box assembly 10a; Sand box assembly 10b; Upper sand box 11; Lower sand box 12; Guide rod 13; Upper sand box connecting pin 14; Lower sand box connecting pin 15; Upper sand box connecting sleeve 16; Lower sand box connecting sleeve 17; Upper sand box spring ejector pin 18; Lower sand box spring ejector pin 19; Sand box drive unit 20; Upper sand box seat 21; Lower sand box seat 22; Guide rod 23; Upper sand box connecting sleeve 24; Lower sand box connecting sleeve 25; Sand box lifting cylinder 26; Lower sand box opening and closing cylinder 27; Rotating part 28; turning cylinder 29; compacting part 30; lower compacting plate 31; lower compacting cylinder 32; guide part 33; upper compacting plate 34; upper compacting cylinder 35; guide part 36; sand shooting part 40; mold plate exchange part 50; box poking part 60; frame 61; box poking cylinder 62; guide part 63; box poking plate 64; upper sand box lifting cylinder 65; guide part 66; lifting claw 67; sand mold receiving part 70; first-level lifting cylinder 71; first-level guide part 72; lifting platform 73; second-level lifting cylinder 74; second-level guide part 75; receiving plate 76; receiving sleeve 77; sand mold pushing part 80; rotating part 90; frame 91; rotating cylinder 92; swing arm 93; rotating shaft 94; rotating platform 95; upper box connecting pin 96; lower box connecting pin 97. DETAILED DESCRIPTION

[0037] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0038] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0041] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for implementation of this application. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of this application. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of this application without substantially changing the technical content.

[0042] The present invention will be further described in detail below with reference to Figures 1-13.

[0043] As shown in Figure 1-13, a double-station molding machine of the present invention includes: a sand box assembly 10a and a sand box assembly 10b, which are used for molding sand molds; a sand box driving part 20, which is connected to the base and is used to control the sand box assembly 10a or the sand box assembly 10b to move to the sand shooting part 40 to fill sand; a rotating part 90, which is connected to the base and is used to support the sand box assembly 10a and the sand box assembly 10b and switch and transport them to the sand box driving part 20; a compacting part 30, which is connected to the base and is used to close the two ends of the sand box assembly 10a or the sand box assembly 10b, and compact the filled sand into a sand mold; a box poking part 60, which is connected to the base and is used to poke the sand mold in the sand box assembly 10a and the sand box assembly 10b to the sand mold receiving part 70.

[0044] The double-station molding machine of the present invention is first installed on the rotating part 90 when it is used for molding. The rotating part 90 can support the sand box assembly 10a and the sand box assembly 10b and switch them to the sand box driving part 20. The sand box assembly transported to the sand box driving part 20 can be connected with the sand box driving part 20 and moved to the sand shooting part 40 to be filled with sand under the control of the sand box driving part 20. When filling with sand, the compacting part 30 closes the two ends of the sand box assembly 10a or the sand box assembly 10b and compacts the filled sand into a sand mold. After the sand mold processing is completed, the sand box driving part 20 controls the sand box assembly to separate from the sand shooting part 40, and switches the sand box assembly through the rotating part 90, moves the molded sand box assembly to the outside, and fills the sand for molding. The box assembly is transported to contact with the sand box driving part 20, and after the external sand mold is inspected, cored, purged, and other operations are carried out, the sand mold is poked out to the sand mold receiving part 70 through the box poking part 60 to complete a molding work; the interior of the present invention is provided with two groups of sand box assemblies that can be used for switch molding. After one group of molding is completed, it can be transported to the outside for sand mold inspection, cored, purged, and other processing. At the same time, the other group of sand box assemblies is transported to the sand shooting part for molding processing. The molding work is divided into two work operations through the double-station structure, which can increase the molding speed and actually occupy fewer workstations. In addition, the inspection, cored, purged, and other operations on the outside of the sand mold will not affect the internal molding and the cycle time, and the external operating station is far away from the internal flipping sand shooting operation, which improves the working environment.

[0045] The structures of the flask assembly 10a and the flask assembly 10b are the same, both including: an upper flask 11, a lower flask 12 and a guide rod 13; the upper flask 11 is fixed on the guide rod 13, and the lower flask 12 slides on the guide rod 13, and a convex ring is provided at the bottom of the guide rod 13 for limiting the bottom of the lower flask 12.

[0046] When the sand box assembly 10a and the sand box assembly 10b are in use, after the rotating part 90 rotates into place, the template on the inside of the equipment is sent to the middle of the upper sand box 11 and the lower sand box 12 through the template control mechanism, and the template control mechanism is used for switching and installing the template; the upper sand box 11 is fixed on the guide rod 13, and the lower sand box 12 slides on the guide rod 13, so that the distance between the lower sand box 12 and the upper sand box 11 can be changed when sliding on the guide rod 13, which is convenient for subsequent sand mold manufacturing and processing; a convex ring is provided at the bottom of the guide rod 13 for limiting the bottom of the lower sand box 12 to prevent the lower sand box 12 from detaching from the guide rod 13.

[0047] The upper flask 11 is provided with an upper flask connecting pin 14 , an upper flask connecting sleeve 16 and an upper flask spring ejector pin 18 ; the lower flask 12 is provided with a lower flask connecting pin 15 , a lower flask connecting sleeve 17 and a lower flask spring ejector pin 19 .

[0048] The rotating part 90 includes: a frame 91, which is connected to the base; a rotating shaft 94 rotates on the frame 91, one end of the rotating shaft 94 is connected to one end of a swing arm 93, and the other end of the swing arm 93 is connected to a rotating cylinder 92 mounted on the frame 91 or the base; the other end of the rotating shaft 94 is connected to a rotating table 95, and two supporting brackets for supporting the sand box assembly 10a and the sand box assembly 10b are relatively arranged on the rotating table 95, and each supporting bracket is provided with a plurality of upper box connecting pins 96 that can be inserted into the upper box connecting sleeve 16 and a plurality of lower box connecting pins 97 that can be inserted into the lower box connecting sleeve 17.

[0049] When the rotating part 90 is connected to the sand box assembly 10a and the sand box assembly 10b, the two supporting brackets on the rotating table 95 are connected to the sand box assembly 10a and the sand box assembly 10b respectively; the upper box connecting pin 96 on the supporting bracket is inserted into the upper box connecting sleeve 16 of the upper sand box 11 from the bottom of the upper sand box 11, and the lower box connecting pin 97 on the supporting bracket is inserted into the lower box connecting sleeve 17 of the lower sand box 12 from the bottom of the lower sand box 12; thereby completing the installation of the sand box assembly 10a and the sand box assembly 10b; when the rotating part 90 is in use, the rotating cylinder 92 is started, and the rotating cylinder 92 can drive one end of the swing arm 93 to swing, and the other end of the swing arm 93 drives the rotating shaft 94 to rotate on the rotating shaft 94, thereby driving the two supporting brackets on the rotating table 95 to perform a circular motion, thereby switching the sand box assembly 10a and the sand box assembly 10b.

[0050] The sand box driving part 20 includes an upper sand box seat 21 and a lower sand box seat 22; the upper sand box seat 21 and the lower sand box seat 22 both slide on two guide rods 23, and the two guide rods 23 are relatively fixed on the rotating part 28; the upper sand box seat 21 is connected to the sand box lifting cylinder 26 installed on the rotating part 28; the upper sand box seat 21 and the lower sand box seat 22 are connected through the lower box opening and closing cylinder 27; the rotating part 28 rotates on the base through a hinge shaft and is connected to the flip cylinder 29 installed on the base.

[0051] After the rotating part 90 rotates into position, the pattern plate is sent to the middle of the upper sand box 11 and the lower sand box 12 through the pattern plate control mechanism on the inside of the equipment. The upper sand box seat 21 inside the sand box driving part 20 is connected to the upper sand box 11, and the lower sand box seat 22 is connected to the lower sand box 12. The lower box opening and closing cylinder 27 retracts to drive the lower sand box seat 22 to rise. The upper sand box seat 21 and the lower sand box seat 22 clamp the upper sand box 11, the pattern plate and the lower sand box 12 together, which is convenient for forming a filling chamber for making sand molds. After the flipping cylinder 29 is started, the rotating part 28 can be driven to rotate around the axis of the hinge shaft, thereby controlling the upper sand box 11, the pattern plate and the lower sand box 12 between the upper sand box seat 21 and the lower sand box seat 22 to perform a flipping movement, which is convenient for transporting them to the sand shooting part 40 for filling with sand.

[0052] In the present invention, the sand-shooting part 40 refers to the sand-shooting part in the invention patent 202011213414.4.

[0053] The upper sand box seat 21 is provided with a plurality of upper box connecting sleeves 24 that can be plugged into and matched with the upper box connecting pins 14; the lower sand box seat 22 is provided with a plurality of lower box connecting sleeves 25 that can be plugged into and matched with the lower box connecting pins 15; the lower box opening and closing cylinder 27 drives the lower sand box seat 22 to move toward the upper sand box seat 21 so that when the upper sand box 11, the mold plate and the lower sand box 12 are pressed together, the upper box spring demolding pin 18 and the lower box spring demolding pin 19 are compressed, the upper box connecting pin 14 and the lower box connecting pin 15 are respectively connected to the upper box connecting sleeve 24 and the lower box connecting sleeve 25, and the upper box connecting sleeve 16 and the lower box connecting sleeve 17 are respectively separated from the upper box connecting pin 96 and the lower box connecting pin 97.

[0054] When the lower box opening and closing cylinder 27 retracts and drives the lower sand box seat 22 to rise, the upper sand box seat 21 and the lower sand box seat 22 clamp the upper sand box 11, the mold plate, and the lower sand box 12 together, the upper box spring demolding pin 18 and the lower box spring demolding pin 19 are compressed. At the same time, the upper box connecting pin 14 and the lower box connecting pin 15 are respectively connected to the upper box connecting sleeve 24 and the lower box connecting sleeve 25, and the upper box connecting sleeve 16 and the lower box connecting sleeve 17 are respectively separated from the upper box connecting pin 96 and the lower box connecting pin 97, thereby realizing the automatic switching of the sand box assembly 10a or the sand box assembly 10b between the rotating part 90 and the sand box driving part 20. The switching has good stability and high efficiency, and no manual operation is required, which reduces labor costs.

[0055] The compacting part 30 includes a lower compacting plate 31 and an upper compacting plate 34 arranged opposite to each other, so as to seal both sides of the lower sand box 12 and the upper sand box 11 when the sand inlet of the sand box is aligned with the sand shooting part 40 for sand injection, and compact the sand filled into the sand box; the lower compacting plate 31 is connected to the base through the lower compacting cylinder 32, and the upper compacting plate 34 is connected to the base through the upper compacting cylinder 35.

[0056] When the cam 32 is in the air, the upper and lower pressing plates 31 are in the air, and the lower and upper pressing plates 34 are in the air. When the cam 32 is in the air, the upper and lower pressing plates 31 are in the air. When the cam 32 is in the air, the upper and lower pressing plates 34 are in the air. When the cam 32 is in the air, the upper and lower pressing plates 31 are in the air. When the cam 32 is in the air, the upper and lower pressing plates 34 are in the air. When the cam 32 is in the air, the upper and lower pressing plates 31 are in the air. When the cam 32 is in the air, the upper and lower pressing plates 34 are in the air. After compaction is completed, the lower compaction cylinder 32 and the upper compaction cylinder 35 are retracted, and at the same time the sand box lifting cylinder 26 is extended, and the lower gate of the sand shooting pot of the sand shooting part 40 rises.

[0057] The lower compaction plate 31 slides in cooperation with the guide portion 33 on the base; the upper compaction plate 34 slides in cooperation with the guide portion 36 on the base so as to improve the stability of the sliding movement of the lower compaction plate 31 and the upper compaction plate 34, and improve the stability when the upper sand box 11 and the lower sand box 12 are filled with sand; the periphery of the lower compaction plate 31 and the upper compaction plate 34 are both provided with seals so as to slide in the lower sand box 12 and the upper sand box 11 in a sealed manner to prevent sand from leaking out.

[0058] The guide part 33 and the guide part 36 have the same structure, both including a guide shaft and a guide sleeve. The middle part of the guide shaft slides in the guide sleeve, and the guide sleeve is fixed on the base; one end of the guide shaft is connected to the lower compaction plate 31 or the upper compaction plate 34, which plays a role of smooth guidance and improves the stability of the lower compaction plate 31 or the upper compaction plate 34 during movement.

[0059] The box-poking part 60 includes a frame 61 mounted on a base; a box-poking cylinder 62 and an upper sand box lifting cylinder 65 are mounted on the frame 61; the movable end of the upper sand box lifting cylinder 65 is connected to a lifting claw 67, so that the upper sand box 11 away from the sand box driving part 20 can be grabbed through the lifting claw 67, and the upper sand box 11 can be driven to move up and down; the movable end of the box-poking cylinder 62 is connected to a box-poking plate 64, so that the sand molds in the upper sand box 11 and the lower sand box 12 can be poked out to the sand mold receiving part 70 through the box-poking plate 64.

[0060] Optionally, the sand mold receiving part 70 includes a receiving plate 76, which is mounted on the secondary lifting cylinder 74, the secondary lifting cylinder 74 is mounted on the lifting platform 73, the lifting platform 73 is mounted on the primary lifting cylinder 71, and the primary lifting cylinder 71 is mounted on the base; the receiving plate 76 is provided with a plurality of receiving sleeves 77 that can be plugged into and matched with the lower box connecting pin 15.

[0061] When the internal sand box assembly of the mold is transported to the outside, the upper sand box lifting cylinder 65 retracts to drive the lifting claws 67 to rise, so that the upper sand box 11 in the sand box assembly rotated to the outside rises, and then the sand mold is inspected, the core is set, the purge and other operations are carried out; while the upper sand box 11 is rising and inspected, the core is set, the purge and other operations are carried out in the previous step, the first-level lifting cylinder 71 extends to drive the head receiving plate 76 of the secondary lifting cylinder 74 fixed on the lifting platform 73 to rise, and the receiving sleeve 77 is connected to the lower box connecting pin 15; after the inspection, core setting, purge and other operations are completed, the second-level lifting cylinder 74 extends to drive the receiving plate 76 to rise, and the lower sand box 12 is lifted up by the receiving plate 76 At the same time, the upper sand box lifting cylinder 65 extends to drive the lifting claw 67 to descend, the upper sand box 11 descends, the upper and lower sand boxes are combined, and the upper box connecting sleeve 16 is connected to the upper box connecting pin 96; the box-poking cylinder 62 extends to drive the box-poking plate 64 to descend and poke the sand molds in the upper and lower sand boxes onto the receiving plate 76; the box-poking cylinder 62 retracts to drive the box-poking plate 64 to rise, and at the same time, the first-level lifting cylinder 71 and the second-level lifting cylinder 74 retract, the lower box connecting sleeve 17 is connected to the upper and lower box connecting pins 97, and the receiving sleeve 77 is separated from the lower box connecting pin 15; the sand mold pushing part 80 pushes the sand mold on the receiving plate 76 out of the molding machine. The sand mold pushing part 80 is the sand mold pushing part in the prior art.

[0062] The sand mold ejection part 80 in the present invention is detailed in the sand mold ejection part in invention patent 202011213414.4.

[0063] Optionally, the box-poking portion 60 also includes a guide portion 63 and a guide portion 66, and the structures of the guide portion 63 and the guide portion 66 are the same as those of the guide portion 33 and the guide portion 36; the guide sleeve of the guide portion 63 is fixed to the frame 61, and the guide shaft of the guide portion 63 is connected to the box-poking plate 64; the guide sleeve of the guide portion 66 is fixed to the frame 61, and the guide shaft of the guide portion 66 is connected to the lifting claw 67; the guide portion 63 is used to improve the stability of the box-poking plate 64 during movement; the guide portion 66 is used to improve the stability of the lifting claw 67 during movement.

[0064] Optionally, the sand mold receiving portion 70 further includes a primary guide portion 72 and a secondary guide portion 75. The structures of the primary guide portion 72 and the secondary guide portion 75 are the same as those of the guide portions 33 and 36. The guide sleeve of the primary guide portion 72 is fixed to the base, and the guide shaft of the primary guide portion 72 is connected to the lifting platform 73. The guide sleeve of the secondary guide portion 75 is fixed to the lifting platform 73, and the guide shaft of the secondary guide portion 75 is connected to the receiving plate 76. The primary guide portion 72 is used to improve the stability of the lifting platform 73 during movement; the secondary guide portion 75 is used to improve the stability of the receiving plate 76 during movement.

[0065] The specific working process of the present invention is as follows:

[0066] There are two sets of flask assemblies, namely flask assembly 10a and flask assembly 10b. After the rotating part 90 rotates to the right position, the pattern plate inside the equipment is sent to the middle of the upper flask 11 and the lower flask 12 through the pattern plate control mechanism;

[0067] The lower box opening and closing cylinder 27 retracts, driving the lower flask seat 22 to rise, and the upper flask seat 21 and the lower flask seat 22 clamp the upper flask 11, the pattern plate, and the lower flask 12 together. The upper box spring ejection pin 18 and the lower box spring ejection pin 19 are compressed. At the same time, the upper box connecting pin 14 and the lower box connecting pin 15 are connected to the upper box connecting sleeve 24 and the lower box connecting sleeve 25. The upper box connecting sleeve 16 and the lower box connecting sleeve 17 are separated from the upper box connecting pin 96 and the lower box connecting pin 97.

[0068] The turning cylinder 29 is extended to drive the flask assembly and the template to rotate forward, so that the sand inlet of the flask assembly is aligned with the sand shooting part 40, and the lower gate of the sand shooting pot of the sand shooting part 40 is lowered to make the gate and the sand inlet of the flask assembly without a gap. The lower compacting cylinder 32 and the upper compacting cylinder 35 are extended to block the upper compacting plate 34 and the lower compacting plate 31 on both sides of the upper flask 11 and the lower flask 12 respectively. The upper gate of the sand shooting part 40 is closed, and the sand in the sand shooting part is filled into the flask of the flask assembly by using compressed air.

[0069] The lower compacting cylinder 32 and the upper compacting cylinder 35 are extended, and the sand box lifting cylinder 26 remains extended. The upper compacting plate 34 and the lower compacting plate 31 squeeze the sand blocks in the sand box at low pressure, and then the oil pump pressure of the hydraulic station is switched to high pressure. At the same time, the lower compacting cylinder 32 is extended, the sand box lifting cylinder 26 is switched to a free moving state, and the upper compacting cylinder 35 is switched to a mid-seal stop state. At this time, because the lower compacting plate 31 squeezes the sand blocks, and the force acts on the mold plate and the upper sand box 11, the sand box lifting cylinder 26 is passively retracted, and the upper sand box 11, the lower sand box 12, the upper sand box seat 21, and the lower sand box seat 22 move as the sand box lifting cylinder 26 retracts, so that the sand at the sand box sand shooting mouth is cut off;

[0070] After compaction is complete, the lower and upper compaction cylinders 32 and 35 retract, while the flask lift cylinder 26 extends, raising the lower gate of the shot jar. The tilting cylinder 29 retracts, driving the flask assembly and reverse rotation of the pattern plate. The lower flask opening and closing cylinder 27 extends, and the upper and lower flask spring ejection pins 18 and 19 extend, separating the pattern plate from the sand mold. The upper and lower flask connecting pins 14 and 15 separate from the upper and lower flask connecting sleeves 24 and 25, and the upper and lower flask connecting sleeves 16 and 17 connect to the upper and lower flask connecting pins 96 and 97. The pattern plate is then transported out of the flask via the pattern plate control mechanism.

[0071] The rotary cylinder 92 first retracts and then extends, driving the swing arm 93 to drive the rotating shaft 94 and the rotating table 95 to rotate, so that the internal sand box assembly 10a with the molded shape and the empty sand box assembly 10b are switched, and the sand box assembly 10b repeats the above operation to perform molding.

[0072] The upper sand box lifting cylinder 65 retracts to drive the lifting claw 67 to rise, so that the upper sand box 11 in the sand box assembly 10a that is rotated to the outside rises; then the sand mold is inspected, the core is set, and the sand mold is purged.

[0073] While the upper sand box is being raised and inspected, the core is set, and the sand box is purged, the first-stage lifting cylinder 71 extends to drive the head receiving plate 76 of the second-stage lifting cylinder 74 fixed on the lifting platform 73 to rise, and the receiving sleeve 77 is connected to the lower box connecting pin 15;

[0074] After the inspection, core setting, purging and other operations are completed, the secondary lifting cylinder 74 extends to drive the receiving plate 76 to rise, and the lower sand box 12 is lifted by the receiving plate 76. At the same time, the upper sand box lifting cylinder 65 extends to drive the lifting claw 67 to descend, and the upper sand box 11 descends. The upper and lower sand boxes are combined, and the upper box connecting sleeve 16 is connected to the upper box connecting pin 96;

[0075] The box-poking cylinder 62 extends to drive the box-poking plate 64 to descend and poke the sand molds in the upper and lower sand boxes onto the receiving plate 76;

[0076] The box-poking cylinder 62 retracts to drive the box-poking plate 64 to rise, and at the same time the first-level lifting cylinder 71 and the second-level lifting cylinder 74 retract, the lower box connecting sleeve 17 is connected to the upper and lower box connecting pins 97, and the receiving sleeve 77 is separated from the lower box connecting pin 15.

[0077] The sand mold ejecting part 80 pushes the sand mold on the receiving plate 76 out of the molding machine; the molding work is divided into two working operations through the double-station structure, which can increase the molding speed. External inspection, core setting, purging and other operations will not affect the internal molding and cycle time, and the external operating station is far away from the internal flipping and sand shooting operation, which improves the working environment.

[0078] The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the same or similar parts between the various embodiments. It should be noted that those skilled in the art may make various improvements and modifications to the present application without departing from the principles of the present application, and such improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. Double-station molding machine, characterized in that: include: A sand box assembly (10a) and a sand box assembly (10b); a sand box driving unit (20) connected to a base and used to control the sand box assembly (10a) or the sand box assembly (10b) to move to a sand shooting unit (40) to fill sand; a rotating unit (90) connected to a base and used to support the sand box assembly (10a) and the sand box assembly (10b) and switch and transport them to the sand box driving unit (20); a compacting unit (30) connected to a base and used to seal both ends of the sand box assembly (10a) or the sand box assembly (10b) and compact the filled sand into a sand mold; and a box poking unit (60) connected to a base and used to poke the sand mold in the sand box assembly (10a) and the sand box assembly (10b) to a sand mold receiving unit (70).

2. The double-station molding machine according to claim 1, characterized in that: The structures of the sand box assembly (10a) and the sand box assembly (10b) are the same, and both include: an upper sand box (11), a lower sand box (12) and a guide rod (13); the upper sand box (11) is fixed on the guide rod (13), the lower sand box (12) slides on the guide rod (13), and a convex ring for limiting the bottom of the lower sand box (12) is provided at the bottom of the guide rod (13).

3. The double-station molding machine according to claim 2, characterized in that: The upper flask (11) is provided with an upper flask connecting pin (14), an upper flask connecting sleeve (16) and an upper flask spring demoulding pin (18); the lower flask (12) is provided with a lower flask connecting pin (15), a lower flask connecting sleeve (17) and a lower flask spring demoulding pin (19).

4. The double-station molding machine according to claim 3, characterized in that: The rotating part (90) comprises: a frame (91) connected to a base; a rotating shaft (94) rotatably arranged on the frame (91), one end of the rotating shaft (94) being connected to one end of a swing arm (93), and the other end of the swing arm (93) being connected to a rotating cylinder (92) mounted on the frame (91) or the base; the other end of the rotating shaft (94) being connected to a rotating table (95), and two supporting frames for supporting a sand box assembly (10a) and a sand box assembly (10b) being arranged opposite to each other on the rotating table (95), and each supporting frame being provided with a plurality of upper box connecting pins (96) which can be plugged into an upper box connecting sleeve (16) and a plurality of lower box connecting pins (97) which can be plugged into a lower box connecting sleeve (17).

5. The double-station molding machine according to claim 4, characterized in that: The sand box driving part (20) comprises an upper sand box seat (21) and a lower sand box seat (22); the upper sand box seat (21) and the lower sand box seat (22) are both slid on two guide rods (23), and the two guide rods (23) are relatively fixed on the rotating part (28); the upper sand box seat (21) is connected to a sand box lifting cylinder (26) installed on the rotating part (28); the upper sand box seat (21) and the lower sand box seat (22) are connected through a lower box opening and closing cylinder (27); the rotating part (28) rotates on the base through a hinge shaft and is connected to a flip cylinder (29) installed on the base.

6. The double-station molding machine according to claim 5, characterized in that: The upper sand box seat (21) is provided with a plurality of upper box connecting sleeves (24) which can be plugged with the upper box connecting pins (14); the lower sand box seat (22) is provided with a plurality of lower box connecting sleeves (25) which can be plugged with the lower box connecting pins (15); the lower box opening and closing cylinder (27) drives the lower sand box seat (22) to move in the direction of the upper sand box seat (21) so that when the upper sand box (11), the mold plate and the lower sand box (12) are pressed together, the upper box spring die-pulling pin (18) and the lower box spring die-pulling pin (19) are compressed, the upper box connecting pin (14) and the lower box connecting pin (15) are connected to the upper box connecting sleeve (24) and the lower box connecting sleeve (25) respectively, and the upper box connecting sleeve (16) and the lower box connecting sleeve (17) are separated from the upper box connecting pin (96) and the lower box connecting pin (97) respectively.

7. The double-station molding machine according to claim 6, characterized in that: The compacting part (30) comprises a lower compacting plate (31) and an upper compacting plate (34) which are arranged opposite to each other, so as to seal both sides of the lower sand box (12) and the upper sand box (11) when the sand inlet of the sand box is aligned with the sand shooting part (40) for sand injection, and compact the sand filled into the sand box; the lower compacting plate (31) is connected to the base through the lower compacting cylinder (32), and the upper compacting plate (34) is connected to the base through the upper compacting cylinder (35).

8. The double-station molding machine according to claim 7, characterized in that: The lower compacting plate (31) is in sliding cooperation with the guide part (33) on the base; the upper compacting plate (34) is in sliding cooperation with the guide part (36) on the base; and seals are provided around the peripheries of the lower compacting plate (31) and the upper compacting plate (34).

9. The double-station molding machine according to claim 8, characterized in that: The box-poking part (60) comprises a frame (61) mounted on a base; a box-poking cylinder (62) and an upper sand box lifting cylinder (65) are mounted on the frame (61); a movable end of the upper sand box lifting cylinder (65) is connected to a lifting claw (67) so that the upper sand box (11) away from the sand box driving part (20) can be grabbed by the lifting claw (67) and the upper sand box (11) can be driven to move up and down; a movable end of the box-poking cylinder (62) is connected to a box-poking plate (64) so ​​that the sand molds in the upper sand box (11) and the lower sand box (12) can be poked out to the sand mold receiving part (70) by the box-poking plate (64).

10. The double-station molding machine according to claim 9, characterized in that: The sand mold receiving part (70) comprises a receiving plate (76), the receiving plate (76) is mounted on a secondary lifting cylinder (74), the secondary lifting cylinder (74) is mounted on a lifting platform (73), the lifting platform (73) is mounted on a primary lifting cylinder (71), and the primary lifting cylinder (71) is mounted on a base; the receiving plate (76) is provided with a plurality of receiving sleeves (77) which can be plugged and matched with the lower box connecting pin (15).

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