Alloy in-mold pressure-maintaining extruding and thinning cutting structure

Abstract

The utility model discloses an alloy in-mold pressure-maintaining thinning and cutting structure which comprises a mold main body, the mold main body comprises a plate A and a plate B, and a mold cavity is formed between the plate A and the plate B; the pressure maintaining assembly comprises a first oil cylinder and a groove formed in the plate B and used for containing materials, a pressure maintaining push rod matched with the groove in shape is arranged in the groove, and the groove is sealed by the pressure maintaining push rod; the in-mold cutting assembly comprises a second oil cylinder and a cutter, the cutter is located in the mold cavity, the output end of the second oil cylinder is connected with the cutter, and the cutter is used for cutting a product in the mold cavity; the extruding and thinning assembly comprises a third oil cylinder and an extruding and thinning push rod, a rod groove used for extruding and thinning the push rod is formed in the plate B, and the extruding and thinning push rod is matched with the rod groove in shape.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a structure for pressure-maintaining, thinning and cutting in an alloy mold. Background Art

[0002] Traditional alloy molds have the following problems in use: First, when the mold has only one feed port, if the product is large, the product is far away from the end of the feed end inside the mold, and the pressure causes relatively less feed, which leads to problems such as sand holes in thick places in the molded product, affecting the quality and appearance of the product; Second, some products need to be cut after molding to form holes or openings. The early cutting method was to take out the product and cut it manually, which had the problem of low cutting accuracy, and it also needed to be polished later, resulting in high labor intensity and low production efficiency; Later, someone improved it by setting a cutter and a hydraulic cylinder inside the mold, and the hydraulic cylinder drove the cutter to cut the product to form the required holes, which can effectively improve the cutting accuracy and production efficiency, but some products are thick or hard, and the thrust of ordinary cylinders is not enough, so they cannot be cut; Third, some products have a structure of different thicknesses, and the thin position of the material is easy to be unsatisfied, which will affect the molding effect of the thin position of the product. Based on the above problems existing in traditional die-casting molds, the applicant proposed a structure for pressure-maintaining extrusion thinning cutting in alloy molds. Utility Model Content

[0003] The purpose of the utility model is to provide a structure for pressure-maintaining, thinning and cutting in an alloy mold to improve the following three problems raised in the above-mentioned background technology: first, the end of the product is far away from the feeding end inside the mold, and the pressure causes relatively less feeding, which leads to the problem of uneven thickness of the molded product; second, when the product is thick or the material hardness is large, the thrust of the ordinary cylinder is insufficient, and the cutting process in the mold cannot be performed to form the required holes; third, the thin material level position of the product is prone to dissipation, which affects the problem of glue shortage in the thin material level position of the product.

[0004] 1. Technical solution: The utility model provides a structure for alloy mold internal pressure-maintaining extrusion thinning and cutting, including a mold main body, the mold main body includes:

[0005] A plate and a B plate, wherein a mold cavity is formed between the A plate and the B plate;

[0006] The pressure-maintaining assembly includes a first oil cylinder and a groove opened on the B plate for accommodating materials, a pressure-maintaining push rod with a shape matching the groove is arranged in the groove, the pressure-maintaining push rod seals the groove, and the output end of the first oil cylinder is connected to the pressure-maintaining push rod for pushing the pressure-maintaining push rod from the bottom to the top of the groove;

[0007] The in-mold cutting assembly comprises a second oil cylinder and a cutter, wherein the cutter is located in the mold cavity, the output end of the second oil cylinder is connected to the cutter, and the cutter is used to cut the product in the mold cavity, and an insert matching the shape of the cutter is arranged inside the cutter, and the insert is fixedly connected to the B plate;

[0008] The thinning component includes a third oil cylinder and a thinning push rod. A rod groove for the thinning push rod is opened on the B plate. The shapes of the thinning push rod and the rod groove match. The output end of the third oil cylinder is connected to the thinning push rod for pushing the thinning push rod upward.

[0009] Furthermore, the pressure-maintaining push rod and the groove are perpendicular to the mold cavity, and the pressure-maintaining push rod and the groove are located at the bottom of the mold cavity.

[0010] Furthermore, the lower end of the pressure-maintaining push rod is connected to a first reset base, and a first reset spring is arranged on the first reset base. The first reset spring is used to assist the first oil cylinder to reset the pressure-maintaining push rod.

[0011] Furthermore, it also includes an ejector pin, the top of which passes through the insert, and the bottom of which is located below the B plate and is connected to an ejector pin plate.

[0012] Furthermore, the extrusion push rod and the rod groove are perpendicular to the mold cavity, and the extrusion push rod and the rod groove are located at the bottom of the mold cavity.

[0013] Furthermore, the lower end of the squeezing push rod is connected to a second reset base, and the second reset base is provided with a second reset spring, and the second reset spring is used to assist the second oil cylinder to reset the squeezing push rod.

[0014] Furthermore, the lower end of the cutter is connected to a third reset base, and the third reset base is provided with a third reset spring, and the third reset spring is used to assist the third oil cylinder to reset the cutter.

[0015] Furthermore, a feed port is provided on the A plate, and the feed port is communicated with the mold cavity.

[0016] Furthermore, a bottom plate is connected below the B plate, and the first oil cylinder, the second oil cylinder and the third oil cylinder are all fixed to the bottom plate by mounting bolts.

[0017] Furthermore, the base plate is provided with oil inlet and outlet channels, each of which forms an oil inlet and outlet connection port on the side wall of the base plate, and each of which is connected to the hydraulic control system of the die-casting machine or the control system of the die-casting external hydraulic station; the oil inlet and outlet ports of the first oil cylinder, the second oil cylinder and the third oil cylinder are respectively connected to the corresponding oil inlet and outlet channels.

[0018] Beneficial effects:

[0019] 1. The utility model is provided with a pressure-holding component, which is arranged at an end far away from the feed port of the mold cavity. The pressure-holding component can fill the position in the mold cavity far away from the feed port with enough material to ensure the molding quality of the product, making the molded product fuller as a whole and smoother and more beautiful in appearance.

[0020] 2. The utility model is provided with an in-mold cutting assembly, which includes a second oil cylinder and a cutter. The cutter is driven by the second oil cylinder. The second oil cylinder uses a patented in-mold multi-layer pressurized oil cylinder or a patented in-mold high-thrust lever oil cylinder, which can provide a higher thrust without increasing the diameter or width, so that cutting can be effectively performed in the mold. After the product is cut in the mold by the in-mold cutting assembly, there is no need for manual stamping processing at a later stage, and because the cutting is performed in the mold, the overall flatness of the product is higher.

[0021] 3. The utility model is provided with an extrusion thinning component, which includes a third oil cylinder and an extrusion thinning push rod. The extrusion thinning push rod is arranged at a position where the product thickness is thin. The third oil cylinder drives the extrusion thinning push rod to push up, and the excess material will be pushed up to thin the material level, thereby achieving the effect that the part can be formed even if the material level is thin.

[0022] 4. The third oil cylinder uses a patented in-mold multi-layer booster oil cylinder, or a patented in-mold high-thrust lever oil cylinder, which can provide higher thrust without increasing the diameter or width, so as to effectively increase the extrusion pressure and effectively ensure the extrusion forming effect. 5. The pressure-maintaining component, in-mold cutting component and extrusion component of the utility model are all provided with matching reset springs. After the rods or cutters of each component are completed, they can be better reset with the assistance of the corresponding reset springs to prepare for the next work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of a structure for pressure-maintaining extrusion thinning and cutting in an alloy mold;

[0024] Figure 2 It is an internal schematic diagram of a structure of alloy in-die pressure-maintaining extrusion thinning and cutting;

[0025] Figure 3 A cross-sectional view of a structure for pressure-holding extrusion thinning and cutting in an alloy mold at the position of a pressure-holding component;

[0026] Figure 4 A cross-sectional view of an alloy in-die pressure-maintaining extrusion thinning cutting structure at the in-die cutting component position;

[0027] Figure 5 The present invention is a cross-sectional view of an alloy in-die pressure-maintaining extrusion and thinning cutting structure at the location of the extrusion component.

[0028] In the figure: 1. mold body; 101. A plate; 102. B plate; 2. first oil cylinder; 3. groove; 4. pressure-maintaining push rod; 5. second oil cylinder; 6. cutter; 7. ejector pin; 8. third oil cylinder; 9. thinning push rod; 10. bottom plate; 1001. oil inlet and outlet channels; 11. feed port; 12. mounting bolts; 13. first return spring; 14. second return spring; 15. third return spring. DETAILED DESCRIPTION

[0029] The utility model is described in detail below in conjunction with the accompanying drawings.

[0030] In the description of the present invention, 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 a limitation on the present invention.

[0031] 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 utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] 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 connection; it can be a mechanical connection or an electrical connection; 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.

[0033] like Figure 1-Figure 5As shown, a structure for alloy in-die pressure-maintaining extrusion thinning cutting includes a die main body 1, a bottom plate 10, a pressure-maintaining component, an in-die cutting component and an extrusion thinning component. The die main body 1 includes an A plate 101 and a B plate 102, a die cavity is formed between the A plate 101 and the B plate 102, a feed port 11 is provided on the A plate 101, the feed port 11 is connected to the die cavity, and the B plate 102 is connected to the bottom plate 10 at the bottom.

[0034] like Figure 2 and Figure 3 As shown, the pressure-maintaining assembly includes a first oil cylinder 2 and a groove 3 provided on the B plate 102 for accommodating materials. A pressure-maintaining push rod 4 having a shape matching that of the groove 3 is provided in the groove 3. The pressure-maintaining push rod 4 seals the groove 3. The output end of the first oil cylinder 2 is connected to the pressure-maintaining push rod 4 for pushing the pressure-maintaining push rod 4 from the bottom to the top of the groove 3. The pressure-maintaining push rod 4 and the groove 3 are both perpendicular to the mold cavity, and the pressure-maintaining push rod 4 and the groove 3 are located at the bottom of the mold cavity. The lower end of the pressure-maintaining push rod 4 is connected to a first reset base, and a first reset spring 13 is provided on the first reset base. The first reset spring 13 is used to assist the first oil cylinder 2 in resetting the pressure-maintaining push rod 4.

[0035] like Figure 2 and Figure 4 As shown, the in-mold cutting assembly includes a second oil cylinder 5 and a cutter 6. The cutter 6 is located in the mold cavity. The output end of the second oil cylinder 5 is connected to the cutter 6. The cutter 6 is used to cut the product in the mold cavity. An insert matching the shape of the cutter 6 is provided inside the cutter 6, and the insert is fixedly connected to the B plate 102. An ejector pin 7 is also provided in the B plate 102. The top of the ejector pin 7 passes through the insert. The bottom of the ejector pin 7 is located below the B plate 102 and is connected to an ejector pin plate. The lower end of the cutter 6 is connected to a third reset base. The third reset base is provided with a third reset spring 15. The third reset spring 15 is used to assist the third oil cylinder 8 in resetting the cutter 6.

[0036] like Figure 2 and Figure 5 As shown, the extrusion thinning assembly includes a third oil cylinder 8 and an extrusion thinning push rod 9. A rod groove for the extrusion thinning push rod 9 is provided on the B plate 102. The shapes of the extrusion thinning push rod 9 and the rod groove match each other. The output end of the third oil cylinder 8 is connected to the extrusion thinning push rod 9 for pushing the extrusion thinning push rod 9 upward. The extrusion thinning push rod 9 and the rod groove are perpendicular to the mold cavity, and the extrusion thinning push rod 9 and the rod groove are located at the bottom of the mold cavity. The lower end of the extrusion thinning push rod 9 is connected to a second reset base, and a second reset spring 14 is provided on the second reset base. The second reset spring 14 is used to assist the second oil cylinder 5 in resetting the extrusion thinning push rod 9.

[0037] like Figure 2-Figure 5As shown, the first oil cylinder 2, the second oil cylinder 5 and the third oil cylinder 8 are all fixed to the bottom plate 10 by mounting bolts 12. The bottom plate 10 is provided with oil inlet and outlet channels 1001, and each oil inlet and outlet channel 1001 forms an oil inlet and outlet connection port on the side wall of the bottom plate 10, and each oil inlet and outlet connection port is connected to the hydraulic control system of the die casting machine or the control system of the die casting external hydraulic station. The oil inlet and outlet ports of the first oil cylinder 2, the second oil cylinder 5 and the third oil cylinder 8 are respectively connected to the corresponding oil inlet and outlet channels 1001.

[0038] The working principle of this utility model:

[0039] First, the utility model is provided with a pressure-holding component, which is arranged at an end far from the feed port of the mold cavity. The pressure-holding component has a groove 3. After the injection of the molten metal is completed, part of the molten metal will enter the groove 3, and the first oil cylinder 2 is started. The first oil cylinder 2 drives the pressure-holding push rod 4 to rise upward, and the top height of the pressure-holding push rod 4 after the rise is the same as the top height of the groove 3, so that the material in the groove 3 is ejected into the mold cavity, so that the position in the mold cavity far from the feed port can be filled with enough material to ensure the molding quality of the product, so that the molded product is fuller as a whole, and the appearance is smoother and more beautiful. The first oil cylinder 2 uses the in-mold multi-layer booster oil cylinder recorded in patent application number 2023115638777, or uses the in-mold high-thrust lever oil cylinder, both of which can provide higher thrust without increasing the diameter or width, so that the holding pressure can be effectively increased and the pressure holding effect can be effectively guaranteed.

[0040] Secondly, the utility model is provided with an in-mold cutting assembly, which includes a second oil cylinder 5 and a cutter 6. The cutter 6 is driven by the second oil cylinder 5. The second oil cylinder 5 uses the in-mold multi-layer pressurized oil cylinder recorded in application number 2023115638777, or uses the in-mold high-thrust lever oil cylinder, which can provide higher thrust without increasing the diameter or width, so that effective cutting can be performed in the mold. Moreover, the cutter 6 can be set to a structure of any shape according to the product structure, such as a circular cutter can cut circular holes, a polygonal cutter can cut polygonal holes, etc., which is very convenient. After the product is cut in the mold by the in-mold cutting assembly, there is no need for manual stamping processing at a later stage, and because the cutting is performed in the mold, the overall flatness of the product is higher.

[0041] Furthermore, the utility model is provided with an extrusion thinning component, which includes a third oil cylinder 8 and an extrusion thinning push rod 9. The extrusion thinning push rod 9 is arranged at a position where the product thickness is thinner. The third oil cylinder 8 drives the extrusion thinning push rod 9 to push up, and the excess material is pushed up to thin the material level, thereby achieving the effect of forming the part even if the material level is thin. Moreover, the third oil cylinder 8 uses the in-mold multi-layer booster oil cylinder recorded in application number 2023115638777, or uses the in-mold high-thrust lever oil cylinder, which can provide higher thrust without increasing the diameter or width, so that the extrusion thinning pressure can be effectively increased and the extrusion thinning forming effect can be effectively guaranteed.

[0042] Finally, the pressure-maintaining component, in-mold cutting component and extrusion thinning component of the utility model are all provided with corresponding reset springs. After the rods or cutters of each component have completed their work, they can be better reset with the assistance of the corresponding reset springs to prepare for the next work.

[0043] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A structure for alloy in-die pressure-maintaining extrusion thinning and cutting, comprising a die body (1), characterized in that: The mold body (1) comprises: A plate (101) and a plate (102), wherein a mold cavity is formed between the plate (101) and the plate (102); A pressure-maintaining component, the pressure-maintaining component comprising a first oil cylinder (2) and a groove (3) provided on a B plate (102) for accommodating materials, a pressure-maintaining push rod (4) having a shape matching that of the groove (3) being arranged in the groove (3), the pressure-maintaining push rod (4) sealing the groove (3), and an output end of the first oil cylinder (2) being connected to the pressure-maintaining push rod (4) for pushing the pressure-maintaining push rod (4) from the bottom to the top of the groove (3); An in-mold cutting assembly, the in-mold cutting assembly comprising a second oil cylinder (5) and a cutter (6), the cutter (6) being located in the mold cavity, the output end of the second oil cylinder (5) being connected to the cutter (6), the cutter (6) being used to cut the product in the mold cavity, an insert having a shape matching that of the cutter (6) being provided on the inner side of the cutter (6), the insert being fixedly connected to the B plate (102); The thinning component comprises a third oil cylinder (8) and a thinning push rod (9); a rod groove for the thinning push rod (9) is provided on the B plate (102); the shapes of the thinning push rod (9) and the rod groove match; the output end of the third oil cylinder (8) is connected to the thinning push rod (9) for pushing the thinning push rod (9) upward.

2. The structure of alloy in-mold pressure-maintaining extrusion thinning and cutting according to claim 1, characterized in that: The pressure-maintaining push rod (4) and the groove (3) are both perpendicular to the mold cavity, and the pressure-maintaining push rod (4) and the groove (3) are located at the bottom of the mold cavity.

3. The structure of alloy in-mold pressure-maintaining extrusion thinning and cutting according to claim 2, characterized in that: The lower end of the pressure-maintaining push rod (4) is connected to a first reset base, and a first reset spring (13) is provided on the first reset base. The first reset spring (13) is used to assist the first oil cylinder (2) in resetting the pressure-maintaining push rod (4).

4. The structure of alloy in-mold pressure-maintaining extrusion thinning and cutting according to claim 1, characterized in that: It also includes an ejector pin (7), the top of which passes through the insert, and the bottom of which is located below the B plate (102) and is connected to an ejector plate.

5. The structure of alloy in-die pressure-maintaining extrusion thinning and cutting according to claim 1, characterized in that: The extrusion push rod (9) and the rod groove are both perpendicular to the mold cavity, and the extrusion push rod (9) and the rod groove are located at the bottom of the mold cavity.

6. The structure for alloy in-die pressure-maintaining extrusion thinning and cutting according to claim 5, characterized in that: The lower end of the squeezing push rod (9) is connected to a second reset base, and a second reset spring (14) is provided on the second reset base. The second reset spring (14) is used to assist the second oil cylinder (5) in resetting the squeezing push rod (9).

7. The structure for alloy in-die pressure-maintaining extrusion thinning and cutting according to claim 1, characterized in that: The lower end of the cutter (6) is connected to a third reset base, and a third reset spring (15) is provided on the third reset base. The third reset spring (15) is used to assist the third oil cylinder (8) in resetting the cutter (6).

8. The structure for alloy in-die pressure-maintaining extrusion thinning and cutting according to claim 1, characterized in that: The A plate (101) is provided with a feed port (11), and the feed port (11) is communicated with the mold cavity.

9. The structure for alloy in-die pressure-maintaining extrusion thinning and cutting according to claim 1, characterized in that: A bottom plate (10) is connected below the B plate (102), and the first oil cylinder (2), the second oil cylinder (5) and the third oil cylinder (8) are all fixed to the bottom plate (10) by means of mounting bolts (12).

10. The structure for alloy in-mold pressure-maintaining extrusion thinning and cutting according to claim 9, characterized in that: The bottom plate (10) is provided with oil inlet and outlet channels (1001), each of which forms an oil inlet and outlet connection port on the side wall of the bottom plate (10), each of which is connected to a hydraulic control system of a die-casting machine or a control system of an external hydraulic station for die-casting; the oil inlet and outlet ports of the first oil cylinder (2), the second oil cylinder (5) and the third oil cylinder (8) are respectively connected to the corresponding oil inlet and outlet channels (1001).

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