Liquid forging equipment

Abstract

The utility model relates to liquid forging equipment, which comprises a die body, a forming mechanism and an extruding mechanism, the forming mechanism comprises a connecting plate and an extruding rod, the connecting plate is arranged at the far end of the die body, the extruding rod is arranged on the connecting plate in a sliding mode, and a first protruding part is arranged at the far end of the extruding rod in the radial direction. A first elastic piece is arranged on the extrusion rod between the first protruding part and the connecting plate, and the near end of the extrusion rod extends into the mold body; the extrusion mechanism comprises a pressing plate arranged at the far end of the forming mechanism and a push-pull device connected with the pressing plate. The elastic piece can absorb impact and vibration in the pressurizing process, so that the pressurizing process is more stable, and the forming quality is guaranteed. And the elastic piece can automatically push the extrusion rod to rebound and reset, and personnel operation or other reset assemblies do not need to be arranged. The extrusion rod serves as an ejector pin to push the product out of the mold body. And the equipment is simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a liquid forging device. Background Art

[0002] Liquid die forging is also known as squeeze casting, and some people call it low-speed high-pressure or liquid metal stamping. Liquid die forging is a production process that combines casting and forging, that is, liquid metal is formed under high pressure in the machine with slight plastic deformation, which can effectively reduce shrinkage defects in castings, improve the density of the workpiece, and greatly improve the mechanical properties through heat treatment.

[0003] Among them, the key to this process is to continuously and stably apply a certain pressure during the solidification process of the liquid metal, depending on the liquid metal and the shape of the product. Existing liquid forging equipment pressurizes the liquid metal in the mold cavity through a pressurizing device or an upper mold directly connected to the driving mechanism. Affected by the working stability of the driving mechanism and the plastic deformation during the liquid metal forming process, there are vibrations and shocks in the process of pressurizing and stabilizing the pressure of the liquid metal, which affects the forming quality. In addition, the separately designed pressurizing mechanism will take up additional space, increasing the volume of the liquid forging equipment. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a liquid forging device to improve the forming quality and simplify the equipment structure.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A liquid forging device comprises a die body, a forming mechanism and an extrusion mechanism, wherein:

[0007] The molding mechanism comprises a connecting plate arranged at the distal end of the mold body, an extrusion rod slidably arranged on the connecting plate, a first protrusion is radially arranged at the distal end of the extrusion rod, a first elastic member is arranged on the extrusion rod between the first protrusion and the connecting plate, and a proximal end of the extrusion rod extends into the mold body;

[0008] The extrusion mechanism comprises a pressing plate arranged at the far end of the forming mechanism and a push-pull device connected to the pressing plate.

[0009] Furthermore, the molding mechanism further comprises an upper cover plate and a lower cover plate, wherein:

[0010] The upper cover plate is arranged at the distal end of the connecting plate, and the extrusion rod penetrates and connects the upper cover plate;

[0011] The lower cover plate is slidably connected to the mold body, and the upper cover plate and the lower cover plate are fixedly connected by connecting bolts.

[0012] Furthermore, first elastic members are respectively arranged on the extrusion rods between the upper cover plate and the first protruding portion and between the upper cover plate and the connecting plate.

[0013] Furthermore, the extrusion mechanism also includes a pressure rod vertically passing through the pressure plate, a nut is provided at the distal end of the pressure rod, a second protrusion is radially provided at the proximal end of the pressure rod, and a second elastic member is provided on the pressure rod between the pressure plate and the second protrusion.

[0014] Furthermore, a roller is provided at the proximal end of the pressure rod.

[0015] Furthermore, it also includes an injection mechanism arranged at the proximal end of the mold body, the injection mechanism includes a container, and an injection tube arranged in the container, the container is provided with air holes, and the injection tube connects the container and the mold body.

[0016] Furthermore, it also includes a frame, which includes a base, a column, an upper beam and a movable cross beam, wherein:

[0017] A plurality of the upright posts are vertically arranged at the far end of the base;

[0018] The upper beam is arranged at the distal end of the column, and the push-pull device is vertically arranged at the proximal end of the upper beam;

[0019] A movable crossbeam is arranged on the column between the upper beam and the base, the push-pull device is connected to the movable crossbeam, and the pressure plate is arranged at the proximal end of the movable crossbeam.

[0020] Furthermore, a set screw is arranged on the pressing plate, the set screw passes through the pressing plate and is threadedly connected to the movable cross beam, and a first bushing is sleeved on the set screw between the pressing plate and the movable cross beam.

[0021] Furthermore, it also includes a demoulding mechanism, which includes a swing arm, a demoulding cylinder and an electromagnet, wherein:

[0022] The swing arm is rotatably arranged between the forming mechanism and the extrusion mechanism;

[0023] The demoulding cylinder is vertically arranged on the swing arm, and the piston rod of the demoulding cylinder is connected with an electromagnet.

[0024] Furthermore, the swing arm is rotatably connected to the column, and a fixing sleeve is provided on the column to abut against the proximal end of the swing arm.

[0025] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0026] (1) The liquid forging equipment described in the utility model applies pressure to the liquid metal through an extrusion rod. An elastic member is provided on the extrusion rod, which can absorb the impact and vibration during the pressurization process, making the pressurization process more stable and ensuring the molding quality. After the pressure on the extrusion rod is subsequently stopped, the elastic member can automatically push the extrusion rod to rebound and reset, without the need for human operation or the setting of other reset components. During the demolding process, the extrusion rod acts as a pin to push the product out of the mold body. Both the application of pressure and demolding are completed by the extrusion rod, which simplifies the structure of the equipment.

[0027] (2) Furthermore, the liquid injection mechanism is arranged in the base of the frame, which saves space while the liquid metal is filled into the mold cavity from the proximal end to the distal end, and the exhaust is smooth, thereby reducing the air entrainment phenomenon.

[0028] (3) Furthermore, the molding mechanism also includes an upper cover plate and a lower cover plate, the extrusion rod is connected to the lower cover plate through the upper cover plate, and the lower cover plate sliding wheel is connected to the mold body. When the extrusion rod is pressurized, the lower cover plate slides along the mold body to guide the moving direction of the extrusion rod, ensuring that the pressurization process is stable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the main structure of a liquid forging device provided by an embodiment of the utility model is shown.

[0030] Figure 2 A partial enlarged view of a liquid forging device at point A provided by an embodiment of the utility model is shown.

[0031] Figure 3 A partial enlarged view of a liquid forging device provided by an embodiment of the utility model at position B is shown.

[0032] Markings in the accompanying drawings:

[0033] 1. Frame; 11. Base; 12. Column; 13. Upper beam; 14. Movable cross beam; 141. Push-pull device; 2. Molding mechanism; 21. Workbench; 211. Gate; 22. Upper cover plate; 221. Metal guide block; 23. Connecting bolt; 231. Second bushing; 24. Lower cover plate; 241. Third bushing; 25. Extrusion rod; 251. First elastic member; 252. First protruding part; 26. Connecting plate; 3. Liquid injection Mechanism; 31. container; 32. injection tube; 33. air hole; 4. extrusion mechanism; 41. pressure plate; 412. set screw; 413. first bushing; 42. pressure rod; 421. nut; 422. roller; 423. second elastic member; 424. second protrusion; 5. demoulding mechanism; 51. swing arm; 511. bearing; 512. fixing sleeve; 52. demoulding cylinder; 53. electromagnet; 6. mold body; 61. mold cavity. DETAILED DESCRIPTION

[0034] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0035] In the description of the present invention, the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", and "circumferential" are 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. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In order to more clearly describe the structure of the above-mentioned liquid forging device, the present invention defines the terms "distal end" and "proximal end". Specifically, the "distal end" refers to the end away from the ground, and the "proximal end" refers to the end close to the ground. Figure 1 For example, Figure 1 The end of the middle molding mechanism 2 close to the extrusion mechanism 4 is the distal end. Figure 1 The end of the middle molding mechanism 2 close to the workbench 21 is the proximal end.

[0037] Please refer to Figure 1 and Figure 2 A liquid forging device includes a mold body 6, a molding mechanism 2 and an extrusion mechanism 4, wherein the molding mechanism 2 includes a connecting plate 26 arranged at the distal end of the mold body 6, an extrusion rod 25 slidably arranged on the connecting plate 26, a first protrusion 252 is radially arranged at the distal end of the extrusion rod 25, a first elastic member 251 is arranged on the extrusion rod 25 between the first protrusion 252 and the connecting plate 26, and the proximal end of the extrusion rod 25 extends into the mold body 6. The extrusion mechanism 4 includes a pressing plate 41 arranged at the distal end of the molding mechanism 2 and a push-pull device 141 connecting the pressing plate 41. Specifically, the elastic member can absorb the impact and vibration during the pressurization process, making the pressurization process more stable and ensuring the molding quality. After the pressure on the extrusion rod 25 is subsequently stopped, the elastic member can automatically push the extrusion rod 25 to rebound and reset, without the need for human operation or setting other reset components. During the demolding process, the extrusion rod 25 acts as an ejector to push the product out of the mold body 6. Both the pressure application and demolding are completed by the extrusion rod 25, simplifying the structure of the equipment.

[0038] The specific structure of the forming mechanism 2 is described below:

[0039] Please refer to Figure 1 and Figure 2 The molding mechanism 2 further includes an upper cover plate 22 and a lower cover plate 24, wherein the upper cover plate 22 is arranged at the distal end of the connecting plate 26, and the extrusion rod 25 penetrates and connects the upper cover plate 22. The lower cover plate 24 is slidably connected to the mold body 6, and the upper cover plate 22 and the lower cover plate 24 are fixedly connected by connecting bolts 23. Specifically, a second bushing 231 is sleeved on the connecting bolts 23 between the lower cover plate 24 and the upper cover plate 22 to limit the distance between the upper cover plate 22 and the lower cover plate 24. A third bushing 241 is arranged between the lower cover plate 24 and the mold body 6, and the third bushing 241 is fixedly connected to the lower cover plate 24 and sleeved on the mold body 6 to protect the lower cover plate 24 and extend the service life of the device. The extrusion rod 25 is connected to the lower cover plate 24 through the upper cover plate 22, and the lower cover plate 24 is connected to the mold body 6 by a sliding wheel. When the extrusion rod 25 is pressurized, the lower cover plate 24 slides along the mold body 6 to guide the moving direction of the extrusion rod 25 to ensure that the pressurization process is stable and accurate.

[0040] Please refer to Figure 1 and Figure 2 The first elastic member 251 is respectively provided on the extrusion rod 25 between the upper cover plate 22 and the first protruding portion 252 and between the upper cover plate 22 and the connecting plate 26. Specifically, the first elastic member 251 limits the relative position of the extrusion rod 25 and the upper cover plate 22, absorbs the impact and vibration during the pressurization process, makes the pressurization process more stable, and ensures the molding quality.

[0041] The specific structure of the extrusion mechanism 4 is described below:

[0042] Please refer to Figure 1 and Figure 2 The extrusion mechanism 4 further includes a pressure rod 42 vertically penetrating the pressure plate 41, a nut 421 is disposed at the distal end of the pressure rod 42, a second protrusion 424 is radially disposed at the proximal end of the pressure rod 42, and a second elastic member 423 is disposed on the pressure rod 42 between the pressure plate 41 and the second protrusion 424. Specifically, the nut 421 limits the movement of the pressure rod 42 toward the proximal end. The second elastic member 423 limits the relative position of the pressure rod 42 and the pressure plate 41, and buffers the impact of the pressure rod 42 against the upper cover plate 22.

[0043] Please refer to Figure 2 , a roller 422 is also provided at the proximal end of the pressure rod 42. Specifically, when pressurizing, the pressure rod 42 abuts against the upper cover plate 22 through the roller 422. The roller 422 limits the upper cover plate 22 from moving toward the distal end, and does not limit the horizontal relative position of the pressure rod 42 and the upper cover plate 22 when pressurizing. After the pressure rod 42 abuts against the upper cover plate 22, the two can still move relative to each other, so that the device can adjust its position adaptively when pressurizing.

[0044] The specific structure of the liquid injection mechanism 3 and the frame 1 is described below:

[0045] Please refer to Figure 1 and Figure 2 , and also includes a liquid injection mechanism 3 arranged at the proximal end of the mold body 6, the liquid injection mechanism 3 includes a container 31, a liquid injection tube 32 arranged in the container 31, and an air hole 33 is opened on the container 31, and the liquid injection tube 32 connects the container 31 and the mold body 6. Specifically, the container 31 can be a crucible. When the liquid metal is filled into the mold cavity 61, the liquid metal is filled into the mold cavity 61 from the proximal end to the distal end, and the exhaust is smooth, which reduces the air entrainment phenomenon. The air hole 33 is higher than the opening of the proximal end of the liquid injection tube 32. The liquid level of the metal liquid is lower than the air hole 33 and higher than the liquid injection tube 32. The air hole 33 connects the charging device (not shown in the figure) with the interior of the container 31. The liquid metal can be filled into the mold cavity 61 by filling the gas from the air hole 33, which is convenient for controlling the volume of the liquid metal filled into the mold cavity 61.

[0046] Please refer to Figure 1 and Figure 2 , further comprising a frame 1, the frame 1 comprising a base 11, columns 12, an upper beam 13 and a movable crossbeam 14, wherein a plurality of columns 12 are vertically arranged at the distal end of the base 11. The upper beam 13 is arranged at the distal end of the column 12, and a push-pull device 141 is vertically arranged at the proximal end of the upper beam 13. A movable crossbeam 14 is arranged on the column 12 between the upper beam 13 and the base 11, the push-pull device 141 is connected to the movable crossbeam 14, and a pressing plate 41 is arranged at the proximal end of the movable crossbeam 14. Specifically, a workbench 21 is further arranged at the distal end of the base 11, the mold body 6 is arranged at the distal end of the workbench 21, and a gate 211 connecting the injection pipe 32 and the mold body 6 is opened on the workbench 21. A translation cylinder (not shown in the figure) is also horizontally arranged on the frame 1, and a piston rod of the translation cylinder is connected to the mold body 6 to push the mold body 6 to deviate from the gate 211 or align with the gate 211. The push-pull device 141 can be a cylinder, and the piston rod of the cylinder is connected to the movable crossbeam 14. The container 31 of the injection mechanism 3 is arranged in the base 11, which saves space.

[0047] Please refer to Figure 1 and Figure 2 The pressing plate 41 is provided with a set screw 412, which passes through the pressing plate 41 and is threadedly connected to the movable cross beam 14. A first bushing 413 is sleeved on the set screw 412 between the pressing plate 41 and the movable cross beam 14. Specifically, the first bushing 413 limits the distance between the movable cross beam 14 and the pressing plate 41, forming a gap (not marked in the figure) between the movable cross beam 14 and the pressing plate 41. The nut 421 of the pressure rod 42 is set in the gap to limit the relative position of the pressure rod 42 and the pressing plate 41.

[0048] The specific structure of the demoulding mechanism 5 is described below:

[0049] Please refer to Figure 1 and Figure 3 , and also includes a demoulding mechanism 5, which includes a swing arm 51, a demoulding cylinder 52 and an electromagnet 53, wherein the swing arm 51 is rotatably arranged between the molding mechanism 2 and the extrusion mechanism 4. The demoulding cylinder 52 is vertically arranged on the swing arm 51, and the piston rod of the demoulding cylinder 52 is connected to the electromagnet 53. Specifically, a metal guide block 221 is arranged at the far end of the upper cover plate 22 corresponding to the electromagnet 53. The piston rod of the demoulding cylinder 52 points to the proximal end, and the electromagnet 53 is arranged at the proximal end of the piston rod. The metal guide block 221 can be adsorbed by starting the electromagnet 53, thereby lifting the mold body 6.

[0050] Please refer to Figure 1 and Figure 3 , the swing arm 51 is rotatably connected to the column 12, and a fixing sleeve 512 is provided on the column 12 to abut the proximal end of the swing arm 51. Specifically, a bearing 511 is provided between the swing arm 51 and the column 12. There can be two fixing sleeves 512, and the two fixing sleeves 512 respectively abut the distal end and the proximal end of the bearing 511. A screw (not shown in the figure) is provided on the fixing sleeve 512, and the screw passes through the fixing sleeve 512 and is screwed into the column 12. When demolding, the swing arm 51 is rotated to the demolding position, otherwise the swing arm 51 can be screwed out of the frame 1, so there is no need to reserve space for storing the demolding mechanism 5 inside the frame 1, and the structure of the device is more compact.

[0051] The specific working process of the utility model is as follows:

[0052] During liquid die forging, the operator uses the inflating device to fill the container 31 with a corresponding volume of inert gas according to the size of the product, and the liquid metal in the container 31 is squeezed, and the liquid metal is filled into the mold cavity 61 along the injection pipe 32 and the gate 211. The translation cylinder pushes the mold body 6 to translate away from the gate 211. The push-pull device 141 pushes the movable crossbeam 14 to move toward the proximal end, thereby driving the pressing plate 41 and the pressure plate 41 to move toward the proximal end until a predetermined pressure is applied to the extrusion rod 25, and the proximal end of the extrusion rod 25 squeezes the liquid metal in the mold cavity 61. In this process, the pressing plate 41 presses against the extrusion rod 25 and directly applies pressure to the extrusion rod 25. The roller 422 of the pressure rod 42 presses against the upper cover plate 22, and the upper cover plate 22 squeezes the first elastic member 251 to indirectly apply pressure to the pressure rod 42. After the molding is completed, the push-pull device 141 pulls the movable crossbeam 14 to move toward the distal end, and the first elastic member 251 resets the extrusion rod 25. The other driving devices rotate the swing arm 51 until the electromagnet 53 rotates to the far end of the guide block, and the demolding cylinder 52 pushes the electromagnet 53 to move toward the proximal end. The electromagnet 53 absorbs the guide block and then absorbs the mold body 6. The demolding cylinder 52 pushes the electromagnet to move toward the far end, and the mold body 6 is also lifted. The swing arm 51 rotates to rotate the mold body 6 to the demolding position, squeezing the extrusion rod 25. The proximal end of the extrusion rod 25 pushes the formed product out of the mold cavity 61, and the liquid die forging is completed.

[0053] It can be seen that in the above-mentioned liquid forging equipment, an elastic member is provided on the extrusion rod 25, which can absorb the impact and vibration during the pressurization process, making the pressurization process more stable and ensuring the molding quality. After the pressure on the extrusion rod 25 is subsequently stopped, the elastic member can automatically push the extrusion rod 25 to rebound and reset, without the need for human operation or setting up other reset components. During the demolding process, the extrusion rod 25 acts as a ejector pin to push the product out of the mold body 6. Both the application of pressure and demolding are completed by the extrusion rod 25, simplifying the structure of the equipment.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A liquid forging device, Features: It includes a mold body, a molding mechanism and an extrusion mechanism, wherein: The molding mechanism comprises a connecting plate arranged at the distal end of the mold body, an extrusion rod slidably arranged on the connecting plate, a first protrusion is radially arranged at the distal end of the extrusion rod, a first elastic member is arranged on the extrusion rod between the first protrusion and the connecting plate, and a proximal end of the extrusion rod extends into the mold body; The extrusion mechanism comprises a pressing plate arranged at the far end of the forming mechanism and a push-pull device connected to the pressing plate.

2. The liquid forging device according to claim 1, Features: The molding mechanism further includes an upper cover plate and a lower cover plate, wherein: The upper cover plate is arranged at the distal end of the connecting plate, and the extrusion rod penetrates and connects the upper cover plate; The lower cover plate is slidably connected to the mold body, and the upper cover plate and the lower cover plate are fixedly connected by connecting bolts.

3. The liquid forging apparatus according to claim 2, Features: First elastic members are respectively arranged on the extrusion rods between the upper cover plate and the first protruding portion and between the upper cover plate and the connecting plate.

4. The liquid forging apparatus according to claim 1, Features: The extrusion mechanism also includes a pressure rod vertically penetrating the pressure plate, a nut is provided at the distal end of the pressure rod, a second protrusion is radially provided at the proximal end of the pressure rod, and a second elastic member is provided on the pressure rod between the pressure plate and the second protrusion.

5. The liquid forging apparatus according to claim 4, Features: The proximal end of the pressure rod is also provided with a roller.

6. The liquid forging apparatus according to claim 1, Features: It also includes a liquid injection mechanism arranged at the proximal end of the mold body, the liquid injection mechanism includes a container and a liquid injection tube arranged in the container, the container is provided with air holes, and the liquid injection tube connects the container and the mold body.

7. The liquid forging apparatus according to claim 1, Features: It also includes a frame, which includes a base, a column, an upper beam and a movable cross beam, wherein: A plurality of the upright posts are vertically arranged at the far end of the base; The upper beam is arranged at the distal end of the column, and the push-pull device is vertically arranged at the proximal end of the upper beam; A movable crossbeam is arranged on the column between the upper beam and the base, the push-pull device is connected to the movable crossbeam, and the pressure plate is arranged at the proximal end of the movable crossbeam.

8. The liquid forging apparatus according to claim 7, Features: The pressing plate is provided with a set screw, which passes through the pressing plate and is threadedly connected to the movable cross beam. A first bushing is sleeved on the set screw between the pressing plate and the movable cross beam.

9. The liquid forging apparatus according to claim 7, Features: It also includes a demoulding mechanism, which includes a swing arm, a demoulding cylinder and an electromagnet, wherein: The swing arm is rotatably arranged between the forming mechanism and the extrusion mechanism; The demoulding cylinder is vertically arranged on the swing arm, and the piston rod of the demoulding cylinder is connected with an electromagnet.

10. The liquid forging apparatus according to claim 9, Features: The swing arm is rotatably connected to the column, and a fixing sleeve is arranged on the column to abut against the proximal end of the swing arm.

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