Quick-change plate frame for V-method mold

Abstract

The invention relates to the technical field of casting molds, in particular to a quick-change template frame for a V-method mold, which comprises a template frame main body, an inner mold, an outer mold, an upper mold and a lower mold, the vacuum forming assembly is arranged at the bottom of the inner cavity of the template frame main body; the number of the flexible line bodies is the same as that of the edges of the template frame main body, and the flexible line bodies are encircled to form a polygonal traction frame matched with an inner cavity of the template frame; the elastic pressing assembly is distributed at the opening end of the template frame body and comprises a pressing block connected to the template frame body in a sliding mode, an elastic element driving the pressing block to stretch out and a triangular linkage mechanism controlled by a flexible line body in a traction mode. The flexible wire body and the elastic pressing assembly are in linkage design, the wire body is pulled to drive the pressing block to return to the sliding way, the inner mold can be rapidly put in or taken out without disassembly, and the mold replacement time is remarkably shortened; the transmission assembly is matched with the driving air cylinder to drive all the winding drums to rotate synchronously, synchronous action of the multiple flexible wire bodies and the associated pressing blocks is achieved, and response lag is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of casting molds, specifically a quick-change type plate frame for V-process molds. Background Art

[0002] In the casting industry, V-process casting has been widely used because of its advantages such as high dimensional accuracy of castings, good surface quality, high utilization rate of molding materials, and little environmental pollution. V-process molds generally consist of a suction box and a mold body, and the suction box and the mold are made into an integral body. In order to shorten the mold manufacturing cycle and reduce the mold manufacturing cost, the suction box and the mold can be made into a split structure, that is, a type plate frame is made and used in cooperation with multiple mold bodies. When producing different products, only the internal mold needs to be replaced.

[0003] For traditional split-structure V-process molds, the mold and the type plate frame are generally fixedly connected by bolts and buckles. During continuous production, when different molds need to be replaced, the type plate frame and the mold need to be separated, and then a new type plate frame is installed. This replacement method has the following disadvantages:

[0004] The disassembly and installation processes are cumbersome and require a lot of time and manpower. Especially for large molds, it often takes several hours or even longer to replace a mold once, which seriously affects the production efficiency. Summary of the Invention

[0005] Aiming at the problems in the prior art, the present invention provides a quick-change type plate frame for V-process molds, and the specific technical solutions are as follows:

[0006] The quick-change type plate frame for V-process molds includes:

[0007] A type plate frame body, which is a polygonal structure with an open top and is used to accommodate an inner mold;

[0008] A vacuum forming assembly, which is arranged at the bottom of the inner cavity of the type plate frame body;

[0009] Flexible wire bodies, the number of flexible wire bodies is the same as the number of sides of the type plate frame body, and they enclose a polygonal pulling frame that matches the inner cavity of the type plate frame;

[0010] An elastic pressing assembly, which is distributed at the open end of the type plate frame body and includes a pressing block slidably connected to the type plate frame body, an elastic element for driving the pressing block to extend, and a triangular linkage mechanism controlled by the flexible wire body;

[0011] And a synchronous driving mechanism, which includes a winding cylinder, a sprocket, a chain and a driving cylinder, and is used to synchronously pull all the flexible wire bodies to control the synchronous retraction of the pressing blocks.

[0012] As a further technical solution of the present invention, in the elastic pressing assembly, the triangular linkage mechanism includes:

[0013] Two sets of rotatable side guide wheels are symmetrically arranged on both sides of the pressing block;

[0014] A rotatable top guide wheel is arranged on the top of the pressing block;

[0015] The flexible wire body passes through the side guide wheels and the top guide wheels in sequence to form a triangular pulling path, and the pressing block is driven to retract during pulling.

[0016] As a further technical solution of the present invention, outwardly convex guide parts are provided on both sides of the pressing block, and corresponding guide grooves are provided on the main body of the template frame.

[0017] As a further technical solution of the present invention, the number of winding drums is the same as the number of corners of the template frame body, and each driving group is connected to two adjacent flexible wire bodies;

[0018] The chain is wound around the sprockets of each winding drum to form a closed-loop linkage structure.

[0019] As a further technical solution of the present invention, an inclined portion is provided at the bottom of the pressing block.

[0020] As a further technical solution of the present invention, it also includes a detachable bottom wear-resistant plate installed at the bottom of the template frame body.

[0021] As a further technical solution of the present invention, it includes a sealing interface connected to the air hole at the bottom of the inner mold, a sealing ring surrounding the sealing interface, a negative pressure port connected to an external negative pressure source, and a back-blowing port provided with a one-way valve.

[0022] The beneficial effects of the present invention are as follows:

[0023] In the present application, the flexible wire body and the elastic pressing assembly are designed to be linked. The pressing block is driven back to the slide by pulling the wire body. The inner mold can be quickly placed in or taken out without disassembly, which significantly shortens the mold change time. The transmission assembly cooperates with the drive cylinder to drive all the winding drums to rotate synchronously, thereby realizing the synchronous movement of multiple flexible wire bodies and associated pressing blocks, avoiding response lag, and ensuring uniform pressing force. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall structure diagram of the quick-change plate frame for the V-method mold is shown;

[0025] Figure 2 The schematic diagram of the structure of the flexible wire body, the elastic pressing assembly, the winding drum and the transmission assembly is shown;

[0026] Figure 3 A schematic diagram of the structure of the elastic pressing assembly is shown;

[0027] Figure 4 A schematic diagram of the structure of the guide portion and the guide groove is shown;

[0028] Figure 5 Shows a schematic structural diagram of the inclined part.

[0029] Description of the drawings: 100, template frame body; 110, wear-resistant strip; 120, positioning hole; 200, vacuum tube; 210, suction port; 211, sealing ring; 220, negative pressure section; 230, back-blowing section; 300, flexible wire body; 400, elastic pressing assembly; 410, slideway; 411, guiding groove; 420, pressing block; 421, guiding part; 422, inclined part; 430, elastic element; 440, side guide wheel; 450, top guide wheel; 500, winding cylinder; 600, transmission assembly; 610, sprocket; 620, chain; 630, driving cylinder. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0031] Figure 1 Shows a schematic overall structure diagram of a quick-change template frame for a V-method mold; Figure 1 In this case, the quick-change template frame for a V-method mold includes a template frame body 100 and a vacuum tube 200. The template frame body 100 is integrally in a polygonal structure with an open top for placing an inner mold, and the vacuum tube 200 is arranged at the bottom of the inner cavity of the template frame body 100 to form a vacuum environment after the inner mold is loaded.

[0032] Continue to refer to Figure 1 , the bottom of the template frame body 100 is detachably provided with a wear-resistant strip 110. After the template frame runs on the track for a long time and the wear-resistant strip is worn, it can be replaced, so as to ensure the position accuracy and service life of the template frame body 100; positioning holes 120 are provided on two opposite sides of the template frame body 100; when the template frame body 100 moves to the place, the positioning holes 120 can cooperate with the guide posts to form positioning to prevent the template frame body 100 from shifting again.

[0033] Continue to refer to Figure 1The top of the vacuum tube 200 has a suction port 210 corresponding to the inner mold, and the suction port 210 of the vacuum tube 200 is surrounded by a sealing ring 211; in actual use, after the inner mold is installed, the air hole at the bottom is connected to the suction port 210, and the sealing ring 211 ensures the sealing effect of the connection between the two, thereby providing conditions for subsequent vacuuming; one end of the vacuum tube 200 extends to the outside of the template frame body 100 and forms a negative pressure section 220, and the negative pressure section 220 is externally connected to a negative pressure source; In actual use, the port of the negative pressure section 220 is externally connected to a negative pressure pump to complete the vacuuming of the inner mold; the other end of the vacuum tube 200 extends to the outside of the mold frame body 100 and forms a backblowing section 230, and a one-way valve is installed in the backblowing section 230 to cooperate with the vacuuming; a one-way valve is arranged in the backblowing section 230, and the spring pressure of the one-way valve is utilized to prevent the backblowing section 230 from being penetrated during the vacuuming stage, and during backblowing, compressed air is introduced into the backblowing section 230 to push open the valve to form backblowing.

[0034] Figure 2 The schematic diagram shows the structure of the flexible wire body 300, the elastic pressing assembly 400, the winding drum 500 and the transmission assembly 600; Figure 2 In the embodiment, a plurality of flexible wire bodies 300 are also included, and the plurality of flexible wire bodies 300 are arranged at the open end of the template frame body 100 and enclose the inner cavity shape corresponding to the template frame body 100; that is, the number of the flexible wire bodies 300 is the same as the number of sides of the template frame body 100, and they are distributed one by one to correspond to each other, so as to enclose a structure matching the shape of the template frame body 100 itself; for example Figure 2 The template frame body 100 itself is a rectangular structure, that is, a quadrilateral, so four flexible wire bodies 300 are correspondingly arranged, and the four flexible wire bodies 300 respectively correspond to the four sides of the template frame body 100, and together form a quadrilateral corresponding to the inner cavity shape of the template frame body 100; two groups of elastic pressing components 400 are arranged in series on each flexible wire body 300; wherein, when the flexible wire body 300 is pulled, the elastic pressing component 400 is driven to change its shape to cooperate with the placement of the inner mold.

[0035] Figure 3 shows a schematic structural diagram of an elastic pressing assembly 400; Figure 3In it, the elastic pressing component 400 includes a slideway 410, a pressing block 420, an elastic element 430, two side guide wheels 440 and a top guide wheel 450. The slideway 410 is opened at the open end of the template frame body 100 and communicates with the opening. The pressing block 420 is slidably connected in the slideway 410. The elastic element 430 is connected between the pressing block 420 and the slideway 410. The elastic element 430 is in a compressed state and drives the pressing block 420 to extend into the opening to press the inner mold; that is to say, under normal conditions, the pressing block 420 can be driven by the elastic force of the elastic element 430 to extend out to stably press the inner mold, ensuring the stability of the connection between the two during the working process; the two side guide wheels 440 are arranged on the template frame body 100 and on both sides of the slideway 410. The top guide wheel 450 is arranged on the pressing block 420. The flexible wire body 300 sequentially passes through a side guide wheel 440, the top guide wheel 450, and the other side guide wheel 440 and forms a triangular structure. The flexible wire body 300 can be driven by pulling to drive the pressing block 420 to retract into the slideway 410; through the triangular layout of the two side guide wheels 440 and a top guide wheel 450, the pulling of the flexible wire body 300 can be used to drive the top guide wheel 450 to approach the side guide wheel 440, that is, to make the pressing block 420 retract into the slideway 410, which is convenient for taking out and putting in the inner mold, beneficial to replacing the inner mold, and when the pressing block 420 is pulled back into the slideway 410, the elastic element 430 is compressed and deformed, so as to facilitate the subsequent extension of the pressing block 420. The two cooperate to realize the control of the extension and retraction of the pressing block 420; both the side guide wheel 440 and the top guide wheel 450 are rotatably arranged. That is to say, the side guide wheel 440 is rotatably arranged on the top of the template frame body 100, and the top guide wheel 450 is rotatably arranged on the top of the pressing block 420 to rotate synchronously when the flexible wire body 300 is pulled to reduce the resistance.

[0036] Figure 4 The structural schematic diagrams of the guiding portion 421 and the guiding groove 411 are shown; Figure 5 The structural schematic diagram of the inclined portion 422 is shown; Figure 4 and Figure 5 In it, both sides of the pressing block 420 have outwardly convex guiding portions 421, and guiding grooves 411 corresponding to the guiding portions 421 are opened on the side walls of the slideway 410; by sliding the guiding portion 421 in the guiding groove 411, the displacement of the pressing block 420 in the vertical plane can be restricted; there is an inclined portion 422 below the head of the pressing block 420; in actual use, the inclined portion 422 can pre-press the slightly convex inner mold, thereby compensating for the error between the template frame body 100 and the inner mold.

[0037] Continue to refer to Figure 2, further comprising a plurality of groups of winding drums 500, the plurality of groups of winding drums 500 corresponding one by one to the corners of the template frame body 100, each winding drum 500 being connected to two adjacent flexible wire bodies 300; when the winding drum 500 is driven to rotate, it can simultaneously pull two adjacent flexible wire bodies 300; the number of winding drums 500 corresponds to the number of corners of the template frame body 100. For example, Figure 2 The medium-sized template frame body 100 is quadrilateral and has four corners. Therefore, four groups of winding drums 500 are provided and arranged at the four corners;

[0038] Continue to refer to Figure 2 , further comprising a transmission assembly 600, the transmission assembly 600 including a sprocket 610 coaxially connected to the winding drum 500 and a chain 620 wound and connected between multiple groups of sprockets 610; through the cooperation of the sprocket 610 and the chain 620, when one group of winding drums 500 rotates, it can drive all the winding drums 500 to rotate synchronously, so as to realize the synchronous movement of several groups of pressing blocks 420; and, since both ends of each flexible wire body 300 are connected to the winding drum 500, the flexible wire body 300 is pulled bidirectionally, so as to correspond to two groups of elastic pressing assemblies 400 connected in series on one flexible wire body 300, avoiding the phenomenon that some elastic pressing assemblies 400 respond laggingly.

[0039] Continue to refer to Figure 2 , a driving cylinder 630 is installed on the template frame body 100, and the output end of the driving cylinder 630 is connected to the chain 620; by the action of the output end of the driving cylinder 630, the chain 620 can be controlled to drive the synchronous response of several groups of elastic pressing assemblies 400.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them.

Claims

1. Quick-change type plate frame for V-process die, characterized in that, Comprising: A template frame body (100), having a polygonal structure with an open top, for accommodating an inner mold; A vacuum forming assembly (200), arranged at the bottom of the inner cavity of the template frame body (100); Flexible wire bodies (300), the number of the flexible wire bodies (300) being the same as the number of sides of the template frame body, enclosing a polygonal pulling frame matching the inner cavity of the template frame; An elastic pressing assembly (400), distributed at the open end of the template frame body, including a pressing block (420) slidably connected to the template frame body, an elastic element (430) for driving the pressing block (420) to extend, and a triangular linkage mechanism controlled by the flexible wire bodies (300); And a synchronous driving mechanism, including a winding cylinder (500), a sprocket (610), a chain (620) and a driving cylinder (630), for synchronously pulling all the flexible wire bodies (300) to control the synchronous retraction of the pressing block (420).

2. The quick-change type plate frame for V-method mold according to claim 1, characterized in that: In the elastic pressing assembly (400), the triangular linkage mechanism includes: Two groups of rotatable side guide wheels (440), symmetrically arranged on both sides of the pressing block (420); A rotatable top guide wheel (450), arranged on the top of the pressing block (420); The flexible wire bodies (300) sequentially pass through the side guide wheels (440) and the top guide wheel (450) to form a triangular pulling path, and drive the pressing block (420) to retract during pulling.

3. The quick-change type plate frame for V-process die according to claim 2, wherein: Outer convex guiding parts (421) are arranged on both sides of the pressing block (420), and corresponding guiding grooves (411) are arranged on the template frame body (100).

4. The quick-change type plate frame for V-process die according to claim 2, wherein: The number of the winding cylinders (500) is the same as the number of corners of the template frame body (100), and each driving group is connected to two adjacent flexible wire bodies (300); The chain (620) is wound around the sprockets (610) of the winding cylinders (500) to form a closed-loop linkage structure.

5. The quick-change type plate frame for V-process mold according to claim 2, wherein: An inclined part (422) is arranged at the bottom of the pressing block (420).

6. The quick-change type plate frame for V-process die according to claim 2, characterized in that, It further includes a detachable bottom wear-resistant plate (110), installed at the bottom of the template frame body (100).

7. The quick-change type plate frame for V-process mold according to claim 5, characterized in that: Including a sealing interface (210) docked with the air holes at the bottom of the inner mold, a sealing ring (211) surrounding the sealing interface, a negative pressure port (220) connected to an external negative pressure source, and a back blowing port (230) provided with a one-way valve.

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