Full-automatic horizontal removable flask extrusion molding device, method and control system

Abstract

The invention discloses a full-automatic horizontal removable flask extrusion molding device and method and a control system. The device comprises an upper mold, an upper box side plate and an upper push plate of the upper mold form an upper sand box, and a lower box side plate and a lower push plate of a lower mold form a movable lower sand box; the model assembly is movably arranged between the upper sand box and the lower sand box, and when the upper sand box and the lower sand box are closed, the upper sand box, the lower sand box and the model assembly jointly form a sand mold. The molding device adopts translation of the model assembly, alternate replacement of the lower mold box and circulation of molding operation, is smooth in procedure connection and high in automation degree, and improves the molding efficiency of the sand mold; the upper mold core and the lower mold core are provided with the venting plugs, and high-speed gas sand flow guides sand to the shadow area and the deep concave cavity part of the mold box through the venting guide effect of the venting plugs, so that the sand filling effect of the areas is improved, and the high pre-tightening degree is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of horizontal flask-free extrusion molding in casting production, and in particular to a fully automatic horizontal flask-free extrusion molding device, method and control system. Background Art

[0002] With the development of industry, the demand for small and medium-sized castings has grown rapidly in recent years. Since the horizontal parting flask molding line does not have a large number of sand boxes and numerous auxiliary machines, it has the characteristics of strong process adaptability and less investment, and has been widely used.

[0003] Traditional extrusion molding devices mostly use gravity to feed sand, generally by top shooting or bottom shooting, and then use a pressure plate to compact the sand mold for final compaction. This method uses a pressure plate to apply pressure from the back of the sand mold toward the template parting surface. As a result, the sand mold near the pressure plate has a high compactness, while the template parting surface and the mold cavity relatively far away from the pressure plate are often insufficiently compacted, especially when the height difference of the mold is large or the sand box has a large deep concave, the cavity at the parting surface or the deeper hanging sand is often not compact enough, resulting in the difficulty in ensuring the consistency of the shape and dimensional accuracy of the casting and poor surface quality. In addition, the existing extrusion molding device has a low degree of automation, the intermediate core adding operation is complicated, and the operating efficiency is low.

[0004] The patent document with application number 202310354994.6 discloses a fully automatic horizontal box-debonding molding machine, which includes a base, a lower sand box, a lower pressure plate, an upper sand box and an upper pressure plate, wherein the four corners of the lower sand box, the lower pressure plate, the upper sand box and the upper pressure plate are all connected with hydraulic rods, which can move up and down within a certain space under the action of the hydraulic rods.

[0005] The molding machine of the application is provided with a mold installation platform in the middle position and the mold installation platform can move left and right in the horizontal direction. Sand mold placement platform and dust removal platform are provided on both sides of the lower sand box, which are respectively used for placing the completed sand mold and removing dust from or replacing the mold. At the same time, after the sand casting is completed, the upper and lower sand boxes are separated to expose the inside of the sand mold to the operator's line of sight, which is convenient for observing whether the sand casting is compact, and also convenient for the placement of subsequent sand cores. The completed molding sand is pushed out in the horizontal direction, which also reduces the damage to the molding sand during the box removal process. However, the scheme also has the problems of insufficient compaction of the molding sand mold, low degree of automation, and is not conducive to the core adding operation of the lower sand box. Summary of the invention

[0006] In view of the above problems, the purpose of the present invention is to provide a fully automatic horizontal box-free extrusion molding device, method and control system, which have a high degree of automation, facilitate core adding operations, and improve the compaction degree of sand molds.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A first aspect: A fully automatic horizontal box-off extrusion molding device, comprising:

[0009] The upper mold is formed by using the upper box side plate and the upper push plate to form the upper sand box;

[0010] The lower mold uses the lower box side plate and the lower push plate to form a movable lower sand box;

[0011] The model assembly is movably placed between the upper sand box and the lower sand box;

[0012] When the upper sand box and the lower sand box are combined, the upper sand box, the lower sand box and the model assembly jointly form a sand mold.

[0013] A second aspect: A fully automatic horizontal box-off extrusion method for the molding device of the first aspect, comprising the following steps:

[0014] S1, the model assembly is translated into the space between the upper sand box and the lower sand box, and the molding sand mold made in the previous cycle is translated out;

[0015] S2, the upper sand box and the lower sand box are combined and sand is added;

[0016] S3, the upper push plate moves downward to compress the sand entering the upper sand box, and the lower push plate moves upward to compress the sand entering the lower sand box to compact the sand;

[0017] S4, the upper sand box and the lower sand box are separated, the model components are translated out of the space between the upper sand box and the lower sand box, and the lower sand box is translated and replaced alternately with the lower sand box with a core;

[0018] S5, the upper sand box and the lower sand box are combined to obtain a molding sand mold;

[0019] S6, separate the upper sand box and the lower sand box, and repeat steps S1-S5 to proceed to the next cycle.

[0020] Furthermore, the upper sand box and the lower sand box are respectively provided with sand inlets, and the two sand inlets are respectively connected with independent sand shooting mechanisms.

[0021] Furthermore, the model assembly includes an upper mold core, a lower mold core and a mold frame, the upper mold core and the lower mold core are fixed in the mold frame, an exhaust cavity is formed between the upper mold core and the lower mold core, and the upper mold core and the lower mold core are both provided with exhaust plugs, and the exhaust plugs are connected to the exhaust cavity.

[0022] Furthermore, a wear-resistant frame is provided at the joint between the corner of the mold frame and the upper box side plate or the lower box side plate.

[0023] Furthermore, the upper mold core molding surface is provided with grooves or convex blocks, and the lower mold core molding surface is provided with convex blocks or grooves corresponding to the upper mold core; the concave-convex sand mold parting surface formed by the upper mold core matches the concave-convex sand mold parting surface formed by the lower mold core.

[0024] Furthermore, when the model assembly is translated into and out of the upper sand box and the lower sand box, and when the two lower sand boxes are replaced alternately, a cross method is adopted.

[0025] Furthermore, after the molded sand mold is obtained and poured, a clamping device is used to fix it.

[0026] The clamping device comprises: an upper counterweight, a pressure iron body, a right clamping plate, a left clamping plate and two groups of left and right connecting rod assemblies, wherein:

[0027] Each connecting rod assembly includes an upper connecting rod, a middle connecting rod and a lower connecting rod; the upper counterweight is rotatably connected to one end of the upper connecting rod, the pressure body is rotatably connected to one end of the middle connecting rod, the other ends of the upper connecting rod and the middle connecting rod are simultaneously rotatably connected to one end of the lower connecting rod, and the other end of the lower connecting rod is rotatably connected to a clamping plate.

[0028] In a third aspect, a control system for the molding device of the first aspect comprises:

[0029] The control system includes a PLC and is connected to a display with a touch screen. A memory is provided in the control system for storing program data. The control system performs control processing of the molding device according to the program data. The control system is also connected to a power circuit, an input circuit and a relay circuit.

[0030] The input circuit is connected to the pressure sensor and the temperature sensor to obtain the detection signal and import it into the control system;

[0031] The relay circuit is connected to the terminal part, and the terminal part is connected to the solenoid valve signal line for controlling the molding device production line equipment.

[0032] Furthermore, the control system is used to perform fully automatic process control on the molding device production line equipment, including:

[0033] Separation of boxes → translation of model components → first closing of boxes → sand feeding → compacting of sand feeding → first separation of boxes → translation of model components → alternating translation of lower sand box → second closing of boxes → forming sand mold → second separation of boxes.

[0034] Beneficial effects of the present invention:

[0035] 1. The molding device of the present invention adopts a translational model component, alternately replaces the lower mold box, and performs molding operations cyclically. The process connection is smooth, the degree of automation is high, and the sand mold molding efficiency is improved.

[0036] 2. The upper and lower mold cores of the present invention are provided with exhaust plugs. The high-speed air sand flow guides the sand to the back shadow area and deep concave cavity of the mold box through the exhaust guiding effect of these exhaust plugs, thereby improving the filling effect of sand into these areas and obtaining a higher pre-compaction degree.

[0037] 3. When the model assembly of the present invention is translated into and out of the upper sand box and the lower sand box, and when the two lower sand boxes are replaced alternately, a cross method is adopted, and the lower sand box has sufficient core release time, and the normal productivity of the molding machine will not be affected by the core release.

[0038] 4. The upper sand box and the lower sand box of the present invention are respectively provided with sand inlets, and the two sand inlets are respectively connected to independent sand shooting mechanisms, through which sand is shot into the upper and lower sand boxes respectively. The two sand shooting mechanisms are independent, and according to the characteristics of the upper and lower sand boxes, by adjusting the different sand shooting pressures of the upper and lower sand shooting mechanisms, the upper and lower sand molds can obtain the expected sand mold pre-compacting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of a fully automatic horizontal box-off extrusion molding device of the present invention;

[0040] Figure 2 It is a schematic diagram of the process of a fully automatic horizontal box-off extrusion molding method of the present invention;

[0041] Figure 3 It is a structural schematic diagram of the model assembly of the present invention;

[0042] Figure 4 It is a schematic structural diagram of the clamping device of the present invention;

[0043] Figure 5 It is a schematic diagram of the exhaust circulation principle of the present invention;

[0044] Figure 6 This is a schematic diagram of the cross-crossing method workstation of the present invention;

[0045] Figure 7 It is a schematic diagram of the structure of the control system of this invention.

[0046] 100, upper mold; 110, upper box side plate; 120, upper push plate; 130, upper sand box; 140, upper hydraulic device;

[0047] 200, lower mold; 210, lower box side plate; 220, lower push plate; 230, lower sand box; 240, lower hydraulic device;

[0048] 300, model assembly; 310, upper mold core; 320, lower mold core; 330, mold frame; 340, exhaust plug; 350, wear-resistant frame;

[0049] 400, sand shooting mechanism; 410, sand inlet;

[0050] 500, clamping device; 510, upper counterweight; 520, weight body; 530, right clamping plate; 540, left clamping plate; 550, connecting rod assembly; 551, upper connecting rod; 552, middle connecting rod; 553, lower connecting rod. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0052] like Figure 1 As shown, the present invention discloses a fully automatic horizontal boxless extrusion molding device including an upper mold 100, a lower mold 200, a mold assembly 300, a clamping device 500, and the like.

[0053] The upper mold 100 includes an upper box side plate 110 , an upper sand box 130 , an upper hydraulic device 140 , etc. The upper sand box 130 is formed by the upper box side plate 110 and an upper push plate 120 . The upper hydraulic device 140 pushes the upper push plate 120 to adjust the space of the upper sand box 130 .

[0054] The lower mold 200 includes a lower box side plate 210, a lower sand box 230 and a lower hydraulic device 240. The lower sand box 230 is formed by the lower box side plate 210 and the lower push plate 220. The lower hydraulic device 240 pushes the lower push plate 220 to adjust the space of the lower sand box 230.

[0055] The model assembly 300 is movably placed between the upper sand box 130 and the lower sand box 230. The model assembly 300 includes components such as an upper mold core 310, a lower mold core 320 and a mold frame 330. The upper and lower mold cores 320 can be accurately installed in the mold frame 330 through positioning pins.

[0056] The clamping device 500 includes an upper counterweight 510, a pressure body 520, a right clamping plate 530, a left clamping plate 540 and two groups of left and right connecting rod assemblies 550, etc. Each group of connecting rod assemblies 550 includes an upper connecting rod 551, a middle connecting rod 552 and a lower connecting rod 553; the upper counterweight 510 is rotatably connected to one end of the upper connecting rod 551, the pressure body 520 is rotatably connected to one end of the middle connecting rod 552, the other ends of the upper connecting rod 551 and the middle connecting rod 552 are simultaneously rotatably connected to one end of the lower connecting rod 553, and the other end of the lower connecting rod 553 is rotatably connected to a clamping plate.

[0057] When the upper sand box 130 and the lower sand box 230 are combined, the upper sand box 130, the lower sand box 230 and the model assembly 300 jointly form a sand mold; the model assembly 300 can be translated in and out between the upper sand box 130 and the lower sand box 230, and the two sets of lower sand boxes 230 can be replaced by translation.

[0058] like Figure 2 As shown, the present invention also discloses a molding method for the molding device, which comprises the following steps when used:

[0059] like Figure 2 As shown in A, first, the upper sand box 130 and the lower sand box 230 are in a separated box state. At this time, the model assembly 300 is translated into between the upper sand box 130 and the lower sand box 230 through a transfer device, and the molding sand mold made in the previous cycle is taken out by translation.

[0060] Furthermore, if Figure 2 As shown in B, after the model assembly 300 is positioned, the upper mold 100 and the lower mold 200 are driven by a power device to realize the one-time closing of the upper sand box 130 and the lower sand box 230, and then the sand is added through the sand shooting mechanism 400;

[0061] Furthermore, if Figure 2 As shown in C, after the sand is fed, the upper push plate 120 is squeezed by the hydraulic device and moves downward to compress the sand fed into the upper sand box 130, and the lower push plate 220 is squeezed by the hydraulic device and moves upward to compress the sand fed into the lower sand box 230 to compact the sand fed;

[0062] Furthermore, if Figure 2 As shown in D, the upper mold 100 and the lower mold 200 are then driven by the power device to realize the one-time box separation of the upper sand box 130 and the lower sand box 230, and the model assembly 300 is translated out of between the upper sand box 130 and the lower sand box 230 by the transfer device, and then the lower sand box 230 is translated and replaced by the transfer device, and the lower sand box 230 without the core is replaced by the lower sand box 230 with the core, and the lower sand box 230 without the core is translated away to perform the core release operation;

[0063] Furthermore, if Figure 2 As shown in FIG. E, the upper mold 100 and the lower mold 200 are then driven by a power device to realize the secondary closing of the upper sand box 130 and the lower sand box 230. After the secondary closing, the sand molds in the upper sand box 130 and the lower sand box 230 are combined to form a molding sand mold.

[0064] Furthermore, if Figure 2 As shown in F, the upper mold 100 and the lower mold 200 are then driven by a power device to achieve secondary separation of the upper sand box 130 and the lower sand box 230. The upper sand box 130 and the lower sand box 230 are in a separated state, and the molded sand mold made in the previous cycle is taken out by translation to proceed to the next cycle.

[0065] When the above-mentioned molding device and molding method are used, if Figure 1 As shown, the upper sand box 130 and the lower sand box 230 are respectively provided with sand inlets 410, and the two sand inlets 410 are respectively connected to independent sand shooting mechanisms 400, through which sand is shot into the upper and lower sand boxes 230 respectively. The two sand shooting mechanisms 400 are independent, and can adjust the different sand shooting pressures of the upper and lower sand shooting mechanisms 400 according to the characteristics of the upper and lower sand boxes 230, so that the upper and lower sand molds can obtain the expected sand mold compacting effect.

[0066] Furthermore, if Figure 3 As shown, the model assembly 300 includes components such as an upper mold core 310, a lower mold core 320 and a mold frame 330. The upper and lower mold cores 320 can be accurately installed in the mold frame 330 through positioning pins. An exhaust cavity is formed between the upper mold core 310 and the lower mold core 320. The upper mold core 310 and the lower mold core 320 are both provided with exhaust plugs 340, and the exhaust plugs 340 are connected to the exhaust cavity.

[0067] When the sand is put in, an appropriate number of exhaust plugs 340 are installed on the upper mold core 310 and the lower mold core 320. The high-speed air sand flow is guided to the back shadow area and deep concave cavity of the mold box through the exhaust guiding effect of these exhaust plugs 340. The high-speed air flow passes through the cavity of the exhaust cavity quickly and smoothly through the exhaust plugs 340 and is discharged into the atmosphere from the side of the model component 300.

[0068] The guided incoming sand can better fill the back shadow area and deep concave cavity of the mold box, thereby improving the filling effect of the sand in these areas and obtaining a higher pre-compactness. Experimental verification shows that when the exhaust plug 340 is added, the hardness of the molding sand mold can be increased by 5 to 8 units compared with without the exhaust plug 340.

[0069] After adopting the exhaust plug 340, not only the pre-compacting effect of the molding sand in the concave cavity part is improved, but also when demolding, the atmosphere can timely fill the cavity after the mold is demolded through the exhaust plug 340, thereby avoiding the difficulty of demolding the hanging sand and causing it to break due to the vacuum formed between the hanging sand and the bottom of the concave cavity during the demolding process, so that the hanging sand can be smoothly lifted out during the molding process.

[0070] Furthermore, if Figure 4 As shown, a wear-resistant frame 350 is provided at the joint between the corner of the mold frame 330 and the upper box side plate 110 or the lower box side plate 210.

[0071] The wear-resistant frame 350 can improve the positioning accuracy of the model assembly 300 in the upper and lower sand boxes 230 when the sand boxes are closed, increase the service life of the model assembly 300, and better protect the model assembly 300 when the upper and lower sand boxes 230 are closed or separated.

[0072] Furthermore, when the upper and lower sand boxes 230 are closed or separated, the relative positions of the upper and lower sand molds are maintained by the friction between the parting surfaces of the upper and lower sand molds. After the separation, during the transfer and transportation of the molding sand molds, the upper and lower sand molds may be inaccurately positioned due to changes in transfer speed, buffering effect, vibration during movement, etc., resulting in misalignment of the upper and lower sand molds, affecting the accuracy of the casting.

[0073] To avoid misalignment, grooves or bumps can be provided on the molding surface of the upper mold core 310, and bumps or grooves corresponding to the upper mold core 310 can be provided on the molding surface of the lower mold core 320; the concave-convex sand mold parting surface formed by the upper mold core 310 matches the concave-convex sand mold parting surface formed by the lower mold core 320.

[0074] When the upper sand mold and the lower sand mold are combined into an integral molding sand mold, the upper sand mold is engaged with the convex blocks or grooves of the upper sand mold through the grooves or convex blocks, so that during the transfer and transportation of the molding sand mold, the upper sand mold and the lower sand mold are not easily misaligned due to changes in transfer speed, buffering effect, vibration during movement, etc., which can improve the accuracy of obtaining castings.

[0075] Furthermore, after obtaining the molding sand mold, in order to prevent leakage accidents caused by the mold expansion and cracking during pouring, the following methods can be used: Figure 5 The clamping device 500 shown in the figure includes an upper counterweight 510, a pressure body 520, a right clamping plate 530, a left clamping plate 540 and two groups of left and right connecting rod assemblies 550, etc. Each group of connecting rod assemblies 550 includes an upper connecting rod 551, a middle connecting rod 552 and a lower connecting rod 553; the upper counterweight 510 is rotatably connected to one end of the upper connecting rod 551, the pressure body 520 is rotatably connected to one end of the middle connecting rod 552, the other ends of the upper connecting rod 551 and the middle connecting rod 552 are simultaneously rotatably connected to one end of the lower connecting rod 553, and the other end of the lower connecting rod 553 is rotatably connected to a clamping plate.

[0076] like Figure 5 As shown in A, when the clamping device 500 rises to lift the iron weight 520, the upper counterweight 510 rises first, and the left and right connecting rod assemblies 500 are opened through the connecting rod assembly 500, and then the iron weight 520 is lifted while continuing to rise;

[0077] like Figure 5 As shown in B, when the clamping device 500 is placed, the iron weight 520 first presses the sand mold. During the continued descending process, the upper counterweight 510 clamps the left and right clamps on the two side surfaces of the molded sand mold through the connecting rod assembly 500, and relies on the force-enhancing effect and self-locking force of the upper counterweight 510 and the connecting rod assembly 500 to prevent the molded sand mold from cracking during pouring.

[0078] Furthermore, if Figure 6 As shown, when the model assembly 300 is translated in and out between the upper flask 130 and the lower flask 230, and when the two lower flasks 230 are replaced alternately, a cross method is adopted.

[0079] Currently, most existing molding devices use a turntable to realize core discharge. The molding device of the present invention uses a cross-shuttle method between the model component 300 and the lower sand box 230 to change the rotary motion into a linear motion. This design can simplify the motion mechanism, ensure smooth movement, accurate positioning, and convenient maintenance.

[0080] Take the lower sand box 230A and the lower sand box 230B as an example; the lower sand box 230A and the lower sand box 230B are installed on a sand box shuttle mechanism that can reciprocate linearly, and are arranged in a cross-intersection with the reciprocating linear motion of the model component 300. When one of the lower sand boxes 230B begins to enter the box closing station for molding, the other lower sand box 230A that has been molded in the previous cycle is simultaneously moved out of the box closing station to the core setting station. The core setting time is from the entry of the lower sand box 230B into the box closing station to the completion of the lower sand box 230B closing and removing the box, the model component 300 entering the box closing station, and the sand mold after the closing is pushed out at the same time, and the new molding, demolding and other whole processes are completed. Therefore, the lower sand box 230A has a longer core setting time.

[0081] After the lower sand box 230B completes the entire molding process, it moves to the other side of the box closing station to place the core. At the same time, the lower sand box 230A that has placed the core moves into the box closing station to place the core, completing the entire process performed by the lower sand box 230B in the previous cycle. This continuous reciprocating and automatic process is carried out, and the normal productivity of the molding machine will not be affected by the core placing process.

[0082] like Figure 7 As shown, the present invention also discloses a control system for the above-mentioned molding device to realize the fully automatic operation of the molding device.

[0083] The control system includes a PLC and is connected to a display with a touch screen. A memory is provided in the control system for storing program data. The control system executes control processing of the molding device according to the program data. The control system is also connected to a power circuit, an input circuit and a relay circuit.

[0084] The input circuit is connected to the pressure sensor and the temperature sensor to obtain the detection signal and import it into the control system.

[0085] The relay circuit is connected to the terminal part, and the terminal part is connected to the solenoid valve signal line for controlling the molding device production line equipment.

[0086] The production line equipment may include hydraulic devices, power devices and transfer devices in the molding device to realize the operation of each process.

[0087] The input circuit collects the detection signals of sensors such as pressure sensors and temperature sensors and imports them into the control system. The control system outputs signals from the terminal part to the production line control system through the relay circuit to control the solenoid valves of each device. The display is composed of a liquid crystal display with a touch screen, and the display controller is connected between the display and the control system. The input signal is input into the control system through the touch screen on the display. The control system includes a PLC to perform the operation of the molding device.

[0088] The entire process can be realized as follows: box separation → model component translation → first box closing → sand feeding → sand compaction → first box separation → model component translation → lower sand box translation alternating → second box closing → sand mold forming → second box separation, and other processes can be fully automatically operated.

[0089] The control system of the present invention is a control system with PLC as the core, which has a fast running speed and advanced functional logic options, and can locate the program device of the control system; it utilizes the coordinated use of hydraulic system, power system and electrical components such as relays to achieve fully automatic and flexible control of the molding device.

[0090] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0091] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0092] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0093] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A fully automatic horizontal box-off extrusion molding device, characterized in that: include: An upper mold (100) is formed into an upper sand box (130) by using an upper box side plate (110) and an upper push plate (120); The lower mold (200) uses the lower box side plate (210) and the lower push plate (220) to form a movable lower sand box (230); A model assembly (300) is movably disposed between an upper flask (130) and a lower flask (230); When the upper sand box (130) and the lower sand box (230) are combined, the upper sand box (130), the lower sand box (230) and the model assembly (300) jointly form a sand mold.

2. A fully automatic horizontal flaskless extrusion molding method for the molding device according to claim 1, characterized in that: The following steps are involved: S1, the model assembly (300) moves horizontally into the space between the upper sand box (130) and the lower sand box (230), and moves horizontally to take out the molding sand mold made in the previous cycle; S2, the upper sand box (130) and the lower sand box (230) are combined and sand is added; S3, the upper push plate (120) moves downward to compress the sand entering the upper sand box (130), and the lower push plate (220) moves upward to compress the sand entering the lower sand box (230), thereby compacting the sand entering; S4, the upper sand box (130) and the lower sand box (230) are separated, the model assembly (300) is translated out from between the upper sand box (130) and the lower sand box (230), and the lower sand box (230) is translated and replaced alternately with the lower sand box (230) with a core; S5, the upper sand box (130) and the lower sand box (230) are combined to obtain a molding sand mold; S6, separate the upper sand box (130) and the lower sand box (230), and repeat steps S1-S5 to proceed to the next cycle.

3. A fully automatic horizontal flaskless extrusion molding method according to claim 2, characterized in that: The upper sand box (130) and the lower sand box (230) are respectively provided with sand inlets (410), and the two sand inlets (410) are respectively connected to independent sand shooting mechanisms (400).

4. A fully automatic horizontal flaskless extrusion molding method according to claim 2, characterized in that: The model assembly (300) includes an upper mold core (310), a lower mold core (320) and a mold frame (330), wherein the upper mold core (310) and the lower mold core (320) are fixed in the mold frame (330), an exhaust cavity is formed between the upper mold core (310) and the lower mold core (320), and the upper mold core (310) and the lower mold core (320) are both provided with exhaust plugs (340), and the exhaust plugs (340) are connected to the exhaust cavity.

5. A fully automatic horizontal flaskless extrusion molding method according to claim 4, characterized in that: A wear-resistant frame (350) is provided at the joint between the corner of the mold frame (330) and the upper box side plate (110) or the lower box side plate (210).

6. A fully automatic horizontal flaskless extrusion molding method according to claim 5, characterized in that: The molding surface of the upper mold core (310) is provided with grooves or convex blocks, and the molding surface of the lower mold core (320) is provided with convex blocks or grooves corresponding to the upper mold core (310); the concave-convex sand mold parting surface molded by the upper mold core (310) matches the concave-convex sand mold parting surface molded by the lower mold core (320).

7. The fully automatic horizontal flask-free extrusion molding method according to claim 2, characterized in that: When the model assembly (300) is translated in and out between the upper flask (130) and the lower flask (230), a cross method is adopted when the two lower flasks (230) are replaced alternately.

8. The fully automatic horizontal flask-free extrusion molding method according to claim 2, characterized in that: After obtaining the molded sand mold, when pouring, a clamping device (500) is used to fix it; The clamping device (500) comprises: an upper counterweight (510), a weight body (520), a right clamping plate (530), a left clamping plate (540) and two groups of left and right connecting rod assemblies (550), wherein: Each connecting rod assembly (550) comprises an upper connecting rod (551), a middle connecting rod (552) and a lower connecting rod (553); the upper counterweight (510) is rotatably connected to one end of the upper connecting rod (551), the weight body (520) is rotatably connected to one end of the middle connecting rod (552), the other ends of the upper connecting rod (551) and the middle connecting rod (552) are simultaneously rotatably connected to one end of the lower connecting rod (553), and the other end of the lower connecting rod (553) is rotatably connected to a clamping plate.

9. A fully automatic horizontal flaskless extrusion molding control system for the molding device of claim 1, characterized in that: include: The control system includes a PLC and is connected to a display with a touch screen. A memory is provided in the control system for storing program data. The control system performs control processing of the molding device according to the program data. The control system is also connected to a power circuit, an input circuit and a relay circuit. The input circuit is connected to the pressure sensor and the temperature sensor to obtain the detection signal and import it into the control system; The relay circuit is connected to the terminal part, and the terminal part is connected to the solenoid valve signal line for controlling the molding device production line equipment.

10. A fully automatic horizontal flask-free extrusion molding control system according to claim 9, characterized in that: The control system is used to automatically control the molding production line equipment, including: Separation of boxes → translation of model components → first closing of boxes → sand feeding → compacting of sand feeding → first separation of boxes → translation of model components → alternating translation of lower sand box → second closing of boxes → forming sand mold → second separation of boxes.

Images