阅读说明：本技术 活塞环砂型成型系统 (Piston ring sand mould forming system ) 是由 赵文飞 陈炜华 于 2019-11-29 设计创作，主要内容包括：本发明属于汽车零部件铸造技术领域,具体涉及一种活塞环砂型成型系统,本发明利用输送带和挡料板实现了型砂的自动上料,并利用震动挤压成型机实现了砂型的自动化成型,提高了砂型成型效率；本发明设计的开模组件能够在开模过程中将模框、延伸框和模板三者自动分离,便于操作人员取下砂型,进一步提高了生产效率；与传统卸料方式不同的是,本发明中的第一活塞缸和第二活塞缸无需采用高压气源驱动,而是利用模板本身的运动使其升降或停留在指定位置,一方面降低了设备成本,另一方面避免了冗余的控制过程,响应速度更快。(The invention belongs to the technical field of automobile part casting, and particularly relates to a piston ring sand mold forming system, which realizes automatic feeding of molding sand by utilizing a conveying belt and a baffle plate, realizes automatic forming of a sand mold by utilizing a vibration extrusion forming machine, and improves sand mold forming efficiency; the mold opening assembly designed by the invention can automatically separate the mold frame, the extension frame and the template in the mold opening process, so that an operator can take down the sand mold conveniently, and the production efficiency is further improved; different from the traditional discharging mode, the first piston cylinder and the second piston cylinder are driven by high-pressure air sources, and are lifted or stopped at a specified position by utilizing the movement of the template, so that the equipment cost is reduced, a redundant control process is avoided, and the response speed is higher.)

1. The utility model provides a piston ring sand mould molding system which characterized in that: comprises a conveyer belt for conveying molding sand, a hopper for storing the molding sand and a vibration extrusion molding machine for extruding the molding sand into a piston ring sand mold; the conveyer belt is located the hopper top, the uncovered setting in hopper upper end, the hopper bottom is equipped with the discharge door, correspond position department with the hopper on the conveyer belt and be equipped with the striker plate, the striker plate upset sets up in the frame, is equipped with the cylinder that is used for driving the striker plate upset in the frame, and cylinder drive striker plate removes between following two stations: in the first station, the bottom edge of the baffle plate is attached to the belt surface of the conveying belt, and the baffle plate is obliquely arranged relative to the length direction of the conveying belt when viewed in the vertical direction; and a second station, wherein the material baffle plate is separated from the belt surface of the conveying belt; the vibrating extrusion forming machine comprises a template and a pressing plate, wherein the pressing plate is located above the template, a detachable template frame is arranged between the pressing plate and the template, the pressing plate is installed on a swing arm swinging along a vertical axis, the template is installed on a piston rod of a vertical hydraulic cylinder, and the template and a bottom discharge opening of a hopper are arranged right opposite to each other in the vertical direction.

2. A piston ring sand mold molding system according to claim 1, wherein: the conveyer belt includes two sections, front and back, and wherein the area of anterior segment conveyer belt is higher than the area of back end conveyer belt, and the top and the tail end of anterior segment conveyer belt are equipped with cooling fan.

3. A piston ring sand mold molding system according to claim 2, wherein: the striker plate is including being into first striker plate and the second striker plate that the font was arranged, the striker plate is made by elastic material, the striker plate is installed on one goes into the font support, should go into the font support and articulate with the frame, the cylinder body and the frame of cylinder are articulated, and the piston rod of cylinder is articulated with going into the font support.

4. A piston ring sand mold molding system according to claim 3, wherein: the discharge door comprises two fan-shaped side walls and an arc-shaped bottom wall connected with the two fan-shaped side walls, the two fan-shaped side walls are hinged to the outer wall of a discharge opening in the bottom of the hopper, the arc-shaped bottom wall is opposite to the discharge opening, and a discharge handle is arranged on the discharge door.

5. A piston ring sand mold molding system according to claim 1, wherein: the die frame and the extension frame are respectively connected with the membrane plate in a sliding manner along the vertical direction, the template, the die frame and the extension frame are sequentially connected from bottom to top in a blocking manner, the die frame and the extension frame are folded with the template under the condition of normal state under the condition that the self gravity is most used, and the die frame and the extension frame can be driven to synchronously move upwards when the template is driven by a hydraulic cylinder to move upwards; the die sinking assembly is assembled to be capable of respectively driving the die frame and the extension frame to execute the following actions in the following four strokes which are sequentially divided from top to bottom when the hydraulic cylinder drives the die plate to descend: in the first stroke, the mold frame and the extension frame synchronously descend with the mold plate under the action of self gravity; in the second stroke, the die sinking assembly blocks the extension frame to stop the extension frame from descending, and the die frame continues to descend synchronously with the diaphragm; in the third stroke, the die opening assembly simultaneously stops the extension frame and the die frame to stop descending; and in the fourth stroke, the mold opening assembly releases the blocking of the extension frame and the mold frame, so that the extension frame and the mold frame are folded with the film plate again under the action of self gravity.

6. A piston ring sand mold molding system according to claim 5, wherein: the die sinking assembly comprises a first piston cylinder, a second piston cylinder and a linkage control valve which are vertically arranged, the cylinder bodies of the first piston cylinder and the second piston cylinder are fixedly connected with the cylinder body of the hydraulic cylinder relatively, the piston rod of the first piston cylinder is fixedly connected with the edge of an extension frame, the piston rod of the second piston cylinder is detachably connected with the edge of a die frame, the linkage control valve comprises a valve shell and a cylindrical valve core which is in sliding fit with the valve shell along the vertical direction, the upper end and the lower end of the valve core are respectively provided with a second ring groove and a first ring groove, the valve shell is provided with a first air inlet hole, a second air inlet hole, a first air outlet hole and a second air outlet hole, the first air inlet hole is communicated with a rodless cavity of the first piston cylinder, the second air inlet hole is communicated with a rodless cavity of the second; a first air inlet branch hole is formed in the first air inlet hole, and a second air inlet branch hole is formed in the second air inlet hole; the case and the relative rigid coupling of template, first inlet port, second inlet port, first branch hole of admitting air, second branch hole of admitting air, first venthole and second venthole are set up as: when the template is in a first stroke, the first air inlet hole, the second air inlet hole and the first air outlet hole are communicated with the first annular groove; when the template is in a second stroke, the first air inlet hole is disconnected with the first annular groove, and the second air inlet hole and the first air outlet hole are communicated with the first annular groove; when the template is in a third stroke, the first air inlet hole and the second air inlet hole are disconnected with the first annular groove; when the template is in a fourth stroke, the first air inlet branch hole, the second air inlet branch hole and the second air outlet hole are communicated with the second annular groove; the rod cavities of the first piston cylinder and the second piston cylinder are communicated with the atmosphere, the rodless cavities of the first piston cylinder and the second piston cylinder are further provided with air inlet pipelines, and the air inlet pipelines are provided with check valves which can enable air to flow into the rodless cavities and can prevent air from flowing out of the rodless cavities.

7. A piston ring sand mold molding system according to claim 6, wherein: still including the stem that is used for the vertical watering of shaping sand mould, the stem includes split type setting last stem and lower stem, go up stem and clamp plate bottom surface rigid coupling, stem is along vertical direction and template sliding connection down, and is equipped with the elastic unit down between stem and the template, and under the normality, lower stem upwards pops out under the effect of elastic unit, and the top surface of stem and the top surface parallel and level of the extension frame of the state of foldeing down at this moment, when template and clamp plate foldings, lower stem is under the extrusion of last stem downwards shrink and the butt face parallel and level of the horizontal mid-plane parallel and level of the frame of last stem and lower stem at this moment.

8. A piston ring sand mold molding system according to claim 7, wherein: a locking device is arranged between the lower core column and the template, and the locking device is assembled to lock the lower core column in a contraction state when the lower core column is extruded to the contraction state by the upper core column; the template is also provided with an unlocking device which is assembled to release the locking device so that the lower core column can be ejected upwards again.

9. A piston ring sand mold molding system according to claim 8, wherein: the locking device comprises an annular groove formed in the lower core column and a clamping plate arranged in the template in a sliding mode along the horizontal direction, a through hole for the lower core column to penetrate through and a clamping groove connected with the through hole along the sliding direction of the clamping plate are formed in the clamping plate, the width of the clamping groove is larger than the diameter of the annular groove and smaller than the diameter of the lower core column, a horizontal pressure spring is arranged between the clamping plate and the template, and the horizontal pressure spring is assembled to enable the clamping plate to slide from the end where the clamping groove is located to the end where the through hole is located; when the lower core column is extruded to a shrinkage state by the upper core column, the annular groove is horizontally aligned with the clamping plate, and the clamping plate enables the clamping groove to be inserted into the annular groove under the action of the pressure spring; unlocking device includes the pull rod with the cardboard rigid coupling, horizontal direction and template sliding connection are followed to the pull rod, the pull rod keep away from the cardboard one end to the piston rod position protruding of second piston cylinder is set up, and this end is equipped with the wedge, be equipped with on the piston rod of second piston cylinder with wedge matched with wedge drive block, wedge and wedge drive block are assembled for can drive wedge horizontal translation when template motion is terminal to the third journey, and the wedge drives the through-hole that pull rod and cardboard slip messenger cardboard and is just right with lower stem.

10. A piston ring sand mold molding system according to claim 9, wherein: an upper circular truncated cone and a lower circular truncated cone are symmetrically arranged on the top surface of the template and the bottom surface of the pressing plate along the root edges of the lower core column and the upper core column respectively; a discharge ring is arranged at the top end of a piston rod of the second piston cylinder, a pin column is arranged on the discharge ring, and a positioning hole which is in plug-in fit with the pin column is formed in the edge of the mold frame; the first piston cylinders are symmetrically arranged in two along the circumferential direction of the template, the second piston cylinders are evenly arranged in three at intervals along the circumferential direction of the template, and two handles are symmetrically arranged on the edge of the template frame; the top end of the pin column is provided with a conical head.

Technical Field

The invention belongs to the technical field of automobile part casting, and particularly relates to a piston ring sand mold forming system.

Background

The manufacturing of such small-size spare part of piston ring generally adopts the mode of stack mould casting to process in order to improve production efficiency, is about to fold together the polylith sand mould to make the die cavity of each sand mould communicate each other through the runner, thereby realize the purpose of a plurality of sand moulds of once pouring, this just requires that the mill must have efficient sand mould molding speed just can go up the pouring production demand more. However, the sand mold molding process in the prior art basically adopts manual operation, the molding process needs to manually place the mold frame, the extension frame and other components on the template of the molding machine, then the molding sand is put on the template and the surface of the molding sand is strickleed off, the press is restarted to extrude the molding sand, and after the sand mold molding, the components such as the extension frame and the mold frame are still needed to be manually removed, so that the production efficiency is low, and the actual production requirements cannot be met.

Disclosure of Invention

The invention aims to provide a piston ring sand mold forming system which can effectively improve sand mold forming efficiency.

The technical scheme adopted by the invention is as follows:

a piston ring sand mold forming system comprises a conveying belt for conveying molding sand, a hopper for storing the molding sand, and a vibration extrusion forming machine for extruding the molding sand into a piston ring sand mold; the conveyer belt is located the hopper top, the uncovered setting in hopper upper end, the hopper bottom is equipped with the discharge door, correspond position department with the hopper on the conveyer belt and be equipped with the striker plate, the striker plate upset sets up in the frame, is equipped with the cylinder that is used for driving the striker plate upset in the frame, and cylinder drive striker plate removes between following two stations: in the first station, the bottom edge of the baffle plate is attached to the belt surface of the conveying belt, and the baffle plate is obliquely arranged relative to the length direction of the conveying belt when viewed in the vertical direction; and a second station, wherein the material baffle plate is separated from the belt surface of the conveying belt; the vibrating extrusion forming machine comprises a template and a pressing plate, wherein the pressing plate is located above the template, a detachable template frame is arranged between the pressing plate and the template, the pressing plate is installed on a swing arm swinging along a vertical axis, the template is installed on a piston rod of a vertical hydraulic cylinder, and the template and a bottom discharge opening of a hopper are arranged right opposite to each other in the vertical direction.

The conveyer belt includes two sections, front and back, and wherein the area of anterior segment conveyer belt is higher than the area of back end conveyer belt, and the top and the tail end of anterior segment conveyer belt are equipped with cooling fan.

The striker plate is including being into first striker plate and the second striker plate that the font was arranged, the striker plate is made by elastic material, the striker plate is installed on one goes into the font support, should go into the font support and articulate with the frame, the cylinder body and the frame of cylinder are articulated, and the piston rod of cylinder is articulated with going into the font support.

The discharge door comprises two fan-shaped side walls and an arc-shaped bottom wall connected with the two fan-shaped side walls, the two fan-shaped side walls are hinged to the outer wall of a discharge opening in the bottom of the hopper, the arc-shaped bottom wall is opposite to the discharge opening, and a discharge handle is arranged on the discharge door.

The die frame and the extension frame are respectively connected with the membrane plate in a sliding manner along the vertical direction, the template, the die frame and the extension frame are sequentially connected from bottom to top in a blocking manner, the die frame and the extension frame are folded with the template under the condition of normal state under the condition that the self gravity is most used, and the die frame and the extension frame can be driven to synchronously move upwards when the template is driven by a hydraulic cylinder to move upwards; the die sinking assembly is assembled to be capable of respectively driving the die frame and the extension frame to execute the following actions in the following four strokes which are sequentially divided from top to bottom when the hydraulic cylinder drives the die plate to descend: in the first stroke, the mold frame and the extension frame synchronously descend with the mold plate under the action of self gravity; in the second stroke, the die sinking assembly blocks the extension frame to stop the extension frame from descending, and the die frame continues to descend synchronously with the diaphragm; in the third stroke, the die opening assembly simultaneously stops the extension frame and the die frame to stop descending; and in the fourth stroke, the mold opening assembly releases the blocking of the extension frame and the mold frame, so that the extension frame and the mold frame are folded with the film plate again under the action of self gravity.

The die sinking assembly comprises a first piston cylinder, a second piston cylinder and a linkage control valve which are vertically arranged, the cylinder bodies of the first piston cylinder and the second piston cylinder are fixedly connected with the cylinder body of the hydraulic cylinder relatively, the piston rod of the first piston cylinder is fixedly connected with the edge of an extension frame, the piston rod of the second piston cylinder is detachably connected with the edge of a die frame, the linkage control valve comprises a valve shell and a cylindrical valve core which is in sliding fit with the valve shell along the vertical direction, the upper end and the lower end of the valve core are respectively provided with a second ring groove and a first ring groove, the valve shell is provided with a first air inlet hole, a second air inlet hole, a first air outlet hole and a second air outlet hole, the first air inlet hole is communicated with a rodless cavity of the first piston cylinder, the second air inlet hole is communicated with a rodless cavity of the second; a first air inlet branch hole is formed in the first air inlet hole, and a second air inlet branch hole is formed in the second air inlet hole; the case and the relative rigid coupling of template, first inlet port, second inlet port, first branch hole of admitting air, second branch hole of admitting air, first venthole and second venthole are set up as: when the template is in a first stroke, the first air inlet hole, the second air inlet hole and the first air outlet hole are communicated with the first annular groove; when the template is in a second stroke, the first air inlet hole is disconnected with the first annular groove, and the second air inlet hole and the first air outlet hole are communicated with the first annular groove; when the template is in a third stroke, the first air inlet hole and the second air inlet hole are disconnected with the first annular groove; when the template is in a fourth stroke, the first air inlet branch hole, the second air inlet branch hole and the second air outlet hole are communicated with the second annular groove; the rod cavities of the first piston cylinder and the second piston cylinder are communicated with the atmosphere, the rodless cavities of the first piston cylinder and the second piston cylinder are further provided with air inlet pipelines, and the air inlet pipelines are provided with check valves which can enable air to flow into the rodless cavities and can prevent air from flowing out of the rodless cavities.

Still including the stem that is used for the vertical watering of shaping sand mould, the stem includes split type setting last stem and lower stem, go up stem and clamp plate bottom surface rigid coupling, stem is along vertical direction and template sliding connection down, and is equipped with the elastic unit down between stem and the template, and under the normality, lower stem upwards pops out under the effect of elastic unit, and the top surface of stem and the top surface parallel and level of the extension frame of the state of foldeing down at this moment, when template and clamp plate foldings, lower stem is under the extrusion of last stem downwards shrink and the butt face parallel and level of the horizontal mid-plane parallel and level of the frame of last stem and lower stem at this moment.

A locking device is arranged between the lower core column and the template, and the locking device is assembled to lock the lower core column in a contraction state when the lower core column is extruded to the contraction state by the upper core column; the template is also provided with an unlocking device which is assembled to release the locking device so that the lower core column can be ejected upwards again.

The locking device comprises an annular groove formed in the lower core column and a clamping plate arranged in the template in a sliding mode along the horizontal direction, a through hole for the lower core column to penetrate through and a clamping groove connected with the through hole along the sliding direction of the clamping plate are formed in the clamping plate, the width of the clamping groove is larger than the diameter of the annular groove and smaller than the diameter of the lower core column, a horizontal pressure spring is arranged between the clamping plate and the template, and the horizontal pressure spring is assembled to enable the clamping plate to slide from the end where the clamping groove is located to the end where the through hole is located; when the lower core column is extruded to a shrinkage state by the upper core column, the annular groove is horizontally aligned with the clamping plate, and the clamping plate enables the clamping groove to be inserted into the annular groove under the action of the pressure spring; unlocking device includes the pull rod with the cardboard rigid coupling, horizontal direction and template sliding connection are followed to the pull rod, the pull rod keep away from the cardboard one end to the piston rod position protruding of second piston cylinder is set up, and this end is equipped with the wedge, be equipped with on the piston rod of second piston cylinder with wedge matched with wedge drive block, wedge and wedge drive block are assembled for can drive wedge horizontal translation when template motion is terminal to the third journey, and the wedge drives the through-hole that pull rod and cardboard slip messenger cardboard and is just right with lower stem.

An upper circular truncated cone and a lower circular truncated cone are symmetrically arranged on the top surface of the template and the bottom surface of the pressing plate along the root edges of the lower core column and the upper core column respectively; a discharge ring is arranged at the top end of a piston rod of the second piston cylinder, a pin column is arranged on the discharge ring, and a positioning hole which is in plug-in fit with the pin column is formed in the edge of the mold frame; the first piston cylinders are symmetrically arranged in two along the circumferential direction of the template, the second piston cylinders are evenly arranged in three at intervals along the circumferential direction of the template, and two handles are symmetrically arranged on the edge of the template frame; the top end of the pin column is provided with a conical head.

The invention has the technical effects that: according to the invention, the automatic feeding of the molding sand is realized by utilizing the conveying belt and the material baffle plate, and the automatic molding of the sand mold is realized by utilizing the vibration extrusion molding machine, so that the molding efficiency of the sand mold is improved; the mold opening assembly designed by the invention can automatically separate the mold frame, the extension frame and the template in the mold opening process, so that an operator can take down the sand mold conveniently, and the production efficiency is further improved; different from the traditional discharging mode, the first piston cylinder and the second piston cylinder are driven by high-pressure air sources, and are lifted or stopped at a specified position by utilizing the movement of the template, so that the equipment cost is reduced, a redundant control process is avoided, and the response speed is higher.

Drawings

Fig. 1 is a perspective view of a piston ring sand mold forming system according to an embodiment of the present invention;

FIG. 2 is a top view of a piston ring sand molding system according to an embodiment of the present invention;

FIG. 3 is a front view of a piston ring sand molding system according to an embodiment of the present invention;

fig. 4 is a perspective view of a piston ring sand mold forming die according to an embodiment of the present invention;

fig. 5 is a plan view of a piston ring sand mold forming die according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

fig. 7 is an enlarged view of part i of fig. 6;

FIG. 8 is an enlarged partial view of II of FIG. 6;

FIG. 9 is an enlarged partial view of III of FIG. 6;

fig. 10 is a perspective view showing a closed state of a piston ring sand mold forming die according to an embodiment of the present invention;

fig. 11 is a sectional view of the state shown in fig. 10;

FIG. 12 is an enlarged partial view of IV of FIG. 11;

FIG. 13 is an enlarged partial view of V of FIG. 11;

fig. 14 is a perspective view of a piston ring sand mold forming die according to an embodiment of the present invention in a third stroke;

FIG. 15 is a front view of the state shown in FIG. 14;

fig. 16 is a sectional view of the state shown in fig. 14;

FIG. 17 is an enlarged partial view VI of FIG. 16;

FIG. 18 is an enlarged partial view of VII of FIG. 16;

FIG. 19 is an enlarged fragmentary view of VIII of FIG. 16;

figure 20 is a top view of a card provided by an embodiment of the present invention.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.