A corrective shearing device for fixing die-cast parts

Abstract

The invention discloses a correction shearing device for fixing die-casting parts, and relates to the technical field of correction of die-casting parts. The correction shearing device for fixing die-casting parts comprises: a mold, the mold comprises a hot mold and a cold mold, the hot mold comprises a hot upper mold and a hot lower mold arranged side by side up and down, the cold mold comprises a cold left mold and a cold right mold arranged side by side left and right, the hot mold and the cold mold are both provided with a cavity for accommodating die-casting parts, and the hot mold and the cold mold are arranged in a diamond-shaped four corner point orientation; a driving mechanism, the driving mechanism is arranged on one side of the mold, the correction shearing device for fixing die-casting parts, when the hot upper mold and the hot lower mold are opened, the cold left mold and the cold right mold are closed, and then the interval time of cold shaping and hot shaping is greatly shortened, and the shaping accuracy of the die-casting parts is improved, and because the cold mold and the hot mold are separate molds, the cold mold does not need to reduce the temperature of the hot mold when cooling, thereby shortening the cooling time and improving the cooling efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of die casting correction, in particular to a correction shearing device for fixing die casting parts. Background Art

[0002] Die casting is a metal casting process characterized by the use of a mold cavity to apply high pressure to the molten metal. The mold is usually made of a stronger alloy and the process is somewhat similar to injection molding. Most die castings are non-ferrous, such as zinc, copper, aluminum, magnesium, lead, tin, lead-tin alloys and their alloys.

[0003] In particular, the existing patent with publication number CN105057403B proposes a die-casting shaping method, a mold and a die-casting. This shaping method can completely release the stress inside the die-casting by first subjecting the die-casting to aging treatment and then sequentially subjecting the die-casting to hot shaping and cold shaping treatment using a jig. The shaping and finalizing process of the die-casting can be completed quickly and efficiently. However, in actual operation, the die-casting parts in the hot mold need to be taken out and put back into the cold mold. The demolding and re-molding operation time is relatively long. The die-casting parts will also be deformed during this process, resulting in a decrease in the actual accuracy rate of the die-casting parts.

[0004] More specifically, for example, a die-casting correction tool proposed in the patent with publication number CN114682655A has a heating structure on the upper mold and a cooling structure on the lower mold. When heating is required, the heating structure works but the cooling structure does not work, and conversely, when cooling is required, the cooling structure works but the heating structure does not work. This method still has a problem, that is, after hot shaping, the temperatures of the upper mold and the lower mold are actually high. At this time, the cooling structure is driven to work. In addition to cooling the die-cast parts, the cooling structure also cools the mold, resulting in the cooling structure being unable to specifically cool the die-cast parts, thereby reducing the cooling efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a correction shearing device for fixing die-cast parts, which solves the problems in the prior art of substandard shaping accuracy and low cooling efficiency of die-cast parts.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a corrective shearing device for fixing die-cast parts, comprising: a mold, the mold comprising a hot mold and a cold mold, the hot mold comprising a hot upper mold and a hot lower mold arranged side by side up and down, the cold mold comprising a cold left mold and a cold right mold arranged side by side left and right, the hot mold and the cold mold are both provided with a cavity for accommodating the die-cast parts, and the hot mold and the cold mold are arranged in a diamond-shaped four corner point orientation; a driving mechanism, the driving mechanism is arranged on one side of the mold, and the driving mechanism is used to drive the cold left mold and the cold right mold to open the mold when the hot upper mold and the hot lower mold are closed, or drive the hot upper mold and the hot lower mold to open the mold when the cold left mold and the cold right mold are closed; a clamping mechanism, the clamping mechanism is located on a vertical line of the plane formed by the hot mold and the cold mold, and the clamping mechanism is used to clamp the die-cast part so that the position of the die-cast part is locked when the hot mold and the cold mold are both separated from the die-cast part.

[0007] Furthermore, it also includes a base, and the driving mechanism is arranged above the base; the driving mechanism includes: a bidirectional screw rod, which is rotatably installed on the base in the Z-axis direction, and the bidirectional screw rod is symmetrically threaded with nuts, and the hot upper mold and the hot lower mold are fixed on the corresponding nuts to enable the hot upper mold and the hot lower mold to move relative to or towards each other; an X-axis guide rod, the X-axis guide rod is vertically arranged at the middle of the bidirectional screw rod, and the X-axis guide blocks are symmetrically sleeved on the X-axis guide rod, and the cold right mold and the cold left mold are fixed on the corresponding X-axis guide blocks; a power rod, the power rod is hinged between adjacent X-axis guide blocks and nuts, and the four power rods form a quadrilateral structure; a main skeleton, the main skeleton is arranged above the base, and a driving motor for driving the bidirectional screw rod to rotate is installed on the main skeleton.

[0008] Furthermore, both ends of the power rod are provided with gear-shaped heads, and two adjacent gear-shaped heads are meshed.

[0009] Furthermore, a Z-axis guide block is fixedly provided on one side of the nut, and a Z-axis guide rod for guiding the Z-axis guide block is installed on the main frame.

[0010] Furthermore, the cold left mold and the cold right mold have cooling cavities, and the interior of the cooling cavities has cooling water, and the cooling cavities cool the die castings through the inner wall of the cavity; the inner wall of the cavity is set to be a thin wall to improve the cooling efficiency; a pressure rod is set in the cooling cavity, and the pressure rod is evenly located on the thin wall, and the end of the pressure rod close to the thin wall is a spherical head; an extrusion assembly is also provided, and the extrusion assembly is used to push the pressure rod so that the pressure rod provides pressure to the thin wall to maintain the shape of the thin wall and the die casting in the cooling state of the thin wall, and the extrusion assembly is a side extrusion assembly and / or a positive extrusion assembly, and the side extrusion assembly is used to extrude the thin wall by side pressure, and the positive extrusion assembly is used to extrude the thin wall by positive pressure; a thrust slider is fixedly provided at one end of the power rod close to the cold mold, and the cold left mold and the cold right mold are provided with a track groove for the movement of the thrust slider, and the movement of the thrust slider is used to drive the side extrusion assembly and / or the positive extrusion assembly to work or not work.

[0011] Furthermore, the side extrusion assembly includes: a fixed seat, which is fixed in the cooling chamber, and the middle section of the pressure rod is rotatably mounted on the fixed seat via a fixed pin shaft; a tension seat, which is located at the end of the pressure rod away from the thin wall, and the pressure rod and the tension seat are rotatably connected via a movable pin shaft, and a force-bearing part 1 is fixedly provided at one end of the tension seat close to the thrust slider, and the thrust slider can apply a pulling force to the force-bearing part 1 when passing through the force-bearing part 1, so that the pressure rod has a tendency to rotate along the fixed pin shaft, so that the spherical head of the pressure rod squeezes the thin wall.

[0012] Furthermore, the forward extrusion assembly includes: a tension plate, which is located on the side of the pressure rod away from the thin wall, and a force-bearing part 2 is provided on the side of the tension plate close to the thrust slider, and the thrust slider can apply force to the force-bearing part 2 when passing through the force-bearing part 2 to move the tension plate; a slope part, which is located on the side of the tension plate close to the pressure rod, and the slope height of the slope part gradually increases along the moving direction of the tension plate; a limit seat, which is fixed in the cooling chamber, and the limit seat is located between the tension plate and the thin wall, the pressure rod is inserted into the limit seat, and a spring 2 is installed between the limit seat and the tension plate.

[0013] Furthermore, the forward extrusion assembly also includes: a positioning seat, which is fixed to the side of the tension plate away from the pressure rod, and a spring 1 is fixed to one side of the positioning seat, and the other end of the spring 1 is fixed to the inner wall of the cooling cavity.

[0014] Furthermore, a cutting knife is installed on one side of the hot upper mold close to the hot lower mold, and a cutting groove adapted to the cutting knife is opened on the hot lower mold.

[0015] Furthermore, the clamping mechanism includes a second clamping block and a cylinder, the second clamping block is located on the side of the middle part of the mold close to the driving mechanism, the cylinder is located on the side of the middle part of the mold away from the second clamping block, and the first clamping block is fixedly provided at the end of the piston rod of the cylinder, and the cylinder is extended so that the second clamping block and the first clamping block clamp the die-casting part: the hot upper mold, hot lower mold, cold left mold and cold right mold are all provided with accommodating grooves for accommodating the second clamping block and the first clamping block.

[0016] The present invention has the following beneficial effects:

[0017] (1) The correction shearing device for fixing die-cast parts arranges the hot upper die, hot lower die, cold left die and cold right die in a diamond-shaped four corner point orientation, and is equipped with a corresponding driving mechanism, so that the cold left die and the cold right die can be closed when the hot upper die and the hot lower die are opened, thereby greatly shortening the interval time between cold shaping and hot shaping, improving the shaping accuracy of the die-casting part, and because the cold die and the hot die are separate molds, the cold die does not need to lower the temperature of the hot die when cooling, thereby shortening the cooling time and improving the cooling efficiency;

[0018] (2) The corrective shearing device for fixing the die-cast part is provided with a clamping mechanism. When the cold mold and the hot mold are in the process of opening and closing the mold and the molds are separated from the die-cast part, the clamping mechanism can clamp the die-cast part so that the position of the die-cast part is locked when the hot mold and the cold mold are separated from the die-cast part, thereby maintaining the stability of the die-cast part;

[0019] (3) The correction shearing device for fixing the die-casting parts is provided with a thin wall in the cold mold. Since the wall thickness is small, the cold conduction efficiency of the cooling water is higher, thereby improving the cooling efficiency;

[0020] (4) The correction shearing device for fixing the die-cast part is provided with a pressure rod in the cooling chamber. The pressure rod is evenly located on the thin wall, and one end of the pressure rod close to the thin wall is a spherical head. The spherical head is pressed on the thin wall to press the thin wall tightly against the die-cast part, thereby avoiding deformation of the thin wall and ensuring the shaping accuracy of the die-cast part. The cold mold can maintain the cold shaping accuracy of the die-cast part on the basis of improving the cooling efficiency.

[0021] (5) The correction shearing device for fixing the die-casting parts is provided with a cutting knife, which can cut the gate of the die-casting parts during the process of hot mold closing, thereby improving the appearance of the die-casting parts and ensuring that the die-casting parts can enter the interior of the shaping mold. The cutting groove is gradually inclined outward and downward, so as to facilitate the discharge of cutting debris.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first viewing angle diagram of the present invention;

[0024] Figure 2 It is a second viewing angle diagram of the present invention;

[0025] Figure 3 It is an orthographic projection diagram of the mold of the present invention;

[0026] Figure 4 It is a schematic diagram of the internal structure of the cold mold of the present invention;

[0027] Figure 5 It is a schematic diagram of the internal structure of the hot mold of the present invention;

[0028] Figure 6 For the present invention Figure 3 A partial map of

[0029] Figure 7 It is a schematic diagram of the installation of the power rod of the present invention;

[0030] Figure 8 For the present invention Figure 7 Orthographic projection of

[0031] Fig. 9 For the present invention Figure 4 Orthographic projection of

[0032] Fig.10 It is a schematic diagram of the structure of the extrusion assembly of the present invention;

[0033] Fig.11 The figure is a mold-matching diagram of a cold left mold and a cold right mold of the present invention;

[0034] Fig.12 This is a mold opening diagram of the hot upper mold and the hot lower mold of the present invention.

[0035] In the figure, 100, base; 200, clamping mechanism; 210, cylinder frame; 220, cylinder; 230, first clamping block; 240, second clamping block; 300, driving mechanism; 310, main frame; 320, bidirectional screw rod; 330, nut; 340, X-axis guide rod; 350, Z-axis guide block; 360, Z-axis guide rod; 370, power rod; 371, gear-shaped head; 372, thrust slider; 380, X-axis guide block; 390, driving motor; 411, hot upper mold; 412, hot lower mold; 4 21. Cold left mold; 422. Cold right mold; 430. Accommodating groove; 440. Heating wire; 450. Track groove; 530. Force-bearing part one; 540. Tension seat; 550. Fixed seat; 560. Moving pin shaft; 570. Fixed pin shaft; 600. Positive extrusion assembly; 610. Tension plate; 620. Positioning seat; 630. Slope; 640. Spring one; 650. Spring two; 660. Force-bearing part two; 670. Limit seat; 700. Pressure rod; 800. Water pipe; 900. Cutting knife; 910. Cutting groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] Refer to the following Figure 1 - Fig.12 The corrective shearing device for fixing die-cast parts provided by an embodiment of the present invention is described.

[0039] See also Figure 1 - Figure 6As shown, an embodiment of the present invention provides a correction shearing device for fixing die-cast parts, including a mold for correcting die-cast parts. The mold mentioned here includes a hot mold and a cold mold. The hot mold has a heating wire 440, so it can heat and soften the die-cast parts. The specific heating temperature is determined according to the material of the corrected part. The thermal correction range is 200°C-350°C, and the hot mold includes a hot upper mold 411 and a hot lower mold 412 arranged side by side. When the hot upper mold 411 and the hot lower mold 412 are closed, the die-cast parts can be thermally shaped. When the hot upper mold 411 and the hot lower mold 412 are opened, the die-cast parts can be separated from the hot mold.

[0040] The cold mold includes a cold left mold 421 and a cold right mold 422 arranged side by side. The cold mold should be equipped with a cooling mechanism, such as setting a cooling cavity inside it, directly injecting water into the cooling cavity or adding a coil in the cooling cavity, so that the cold water temperature is transmitted through the cold mold to the die-casting parts with higher temperature for cold shaping.

[0041] The hot mold and the cold mold are both provided with cavities for accommodating die-cast parts, and the hot mold and the cold mold are arranged in a diamond-shaped four corner point orientation.

[0042] In addition, the cavity in the hot mold and the cavity in the cold mold are made according to the shape of the die-casting part itself. For example, if the die-casting part to be shaped is set as an ordinary cam, the cavity in the hot mold should be Figure 5 As shown, the cavity in the cold mold should be Figure 4 Status shown.

[0043] like Figure 1 and Figure 3 As shown, in order to realize the opening and closing of the two molds, a driving mechanism 300 is provided here. The driving mechanism 300 is arranged on one side of the mold, and the driving mechanism 300 is used to drive the cold left mold 421 and the cold right mold 422 to open the mold when the hot upper mold 411 and the hot lower mold 412 are closed, or drive the hot upper mold 411 and the hot lower mold 412 to open the mold when the cold left mold 421 and the cold right mold 422 are closed, thereby making the hot shaping and the cold shaping seamlessly connected, and there is no need for manual mold changing.

[0044] Therefore, the correction shearing device for fixing the die-cast parts provided in the embodiment of the present invention can realize the opening of the cold left mold 421 and the cold right mold 422 when the hot upper mold 411 and the hot lower mold 412 are closed, or drive the hot upper mold 411 and the hot lower mold 412 to open when the cold left mold 421 and the cold right mold 422 are closed, thereby greatly shortening the interval time between cold shaping and hot shaping, improving the shaping accuracy of the die-casting, and because the cold mold and the hot mold are separate molds, the cold mold does not need to lower the temperature of the hot mold when cooling down, thereby shortening the cooling time and improving the cooling efficiency.

[0045] like Figure 1 and Figure 2 In fact, due to the opening and closing process of the cold mold and the hot mold, there will be a period of time when all the molds are separated from the die-casting parts. At this time, in order to keep the position of the die-casting parts stationary, a clamping mechanism 200 is also provided. The clamping mechanism 200 is located on the vertical line of the plane formed by the hot mold and the cold mold, and the clamping mechanism 200 is used to clamp the die-casting parts so that the position of the die-casting parts is locked when the hot mold and the cold mold are separated from the die-casting parts.

[0046] Combination Figure 6 - Figure 8 As shown, in order to realize the sequential operation of the hot and cold molds, the present invention provides the following solutions: it also includes a base 100, and the driving mechanism 300 is arranged above the base 100; 1) first solve the problem of opening and closing the hot upper mold 411 and the hot lower mold 412. Specifically, the driving mechanism 300 includes a bidirectional screw rod 320, which is rotatably installed on the base 100 in the Z-axis direction, and the bidirectional screw rod 320 is symmetrically threaded with nuts 330, that is, when the bidirectional screw rod 320 rotates, it can drive the two sets of nuts 330 to move relative or toward each other, so as to move the hot upper mold 411 and the hot lower mold 412 are fixed on the corresponding nuts 330, so that the hot upper mold 411 and the hot lower mold 412 can move relative to each other (the hot upper mold 411 and the hot lower mold 412 are closed) or move toward each other (the hot upper mold 411 and the hot lower mold 412 are opened); 2) the problem of opening and closing the cold right mold 422 and the cold left mold 421 is solved. Specifically, an X-axis guide rod 340 is set, and the X-axis guide rod 340 is vertically arranged in the middle of the bidirectional screw rod 320, and an X-axis guide block 380 is symmetrically sleeved on the X-axis guide rod 340, and the cold right mold 422 and the cold left mold 421 is fixed on the corresponding X-axis guide block 380. When the two X-axis guide blocks 380 move relative to each other, the cold right mold 422 and the cold left mold 421 are molded together. Conversely, when the two X-axis guide blocks 380 move toward each other, the cold right mold 422 and the cold left mold 421 are molded together. 3) Finally, the mold opening and closing of the hot mold with the cold mold is solved. Specifically, a power rod 370 is set. The power rod 370 is hinged between the adjacent X-axis guide blocks 380 and the nuts 330. The four power rods 370 form a quadrilateral structure, and then when the two nuts 330 move relative to each other, the cold right mold 422 and the cold left mold 421 are molded together. When the two nuts 330 move toward each other (when the hot mold is opened), the angle between the two power rods 370 on the same side of the left and right sides increases, and the angle between the two power rods 370 on the same side of the upper and lower sides increases, so that the two cold right molds 422 and the cold left mold 421 move toward each other (the two cold molds move away from each other), and when the two nuts 330 move toward each other (when the hot mold is opened), the angle between the two power rods 370 on the same side of the left and right sides increases, and the angle between the two power rods 370 on the same side of the upper and lower sides decreases, so that the two cold right molds 422 and the cold left mold 421 move relative to each other (the cold mold is closed).

[0047] In addition, a main frame 310 is provided, and the main frame 310 is arranged above the base 100. The upper end of the bidirectional screw rod 320 is rotatably mounted on the main frame 310 through a bearing, and a driving motor 390 for driving the bidirectional screw rod 320 to rotate is installed on the main frame 310.

[0048] like Figure 7 and Figure 8 As shown, when the bidirectional screw rod 320 rotates, the two symmetrical power rods 370 are prone to angular deviation due to friction and other reasons, resulting in asymmetry of the X-axis guide block 380 (asymmetric movement paths of the cold left mold 421 and the cold right mold 422), which affects the shaping accuracy of the die-casting parts after the cold molds are closed. Gear heads 371 are provided at both ends of the power rod 370, and the two adjacent gear heads 371 are meshed, so that the two adjacent power rods 370 can limit their inclination angles to each other with the gear heads 371, thereby achieving symmetry in the movement paths of the cold left mold 421 and the cold right mold 422, thereby ensuring the shaping accuracy of the die-casting parts after the cold molds are closed.

[0049] Combination Figure 1 and Figure 2 As shown, in order to maintain the stable movement of the nut 330 on the Z axis, a Z-axis guide block 350 is fixed on one side of the nut 330, and a Z-axis guide rod 360 for guiding the Z-axis guide block 350 is installed on the main frame 310 to maintain the stable movement of the nut 330 on the Z axis.

[0050] Combination Figure 4 and Fig. 9 As shown, in order to improve the cooling efficiency of the cold mold, a cooling cavity is provided in the cold left mold 421 and the cold right mold 422. There is cooling water inside the cooling cavity. The cooling water can be directly in the cooling cavity or placed in the cooling cavity through a coil. The cooling cavity cools the die-casting through the inner wall of the cavity. Preferably, the inner wall of the cavity is set to a thin wall. Due to the small wall thickness, the cold conduction efficiency of the cooling water is higher, thereby improving the cooling efficiency.

[0051] Preferably, water pipes 800 for water inlet and outlet are provided on both the cold left mold 421 and the cold right mold 422 to achieve the purpose of flowing water cooling.

[0052] Optionally, the thickness of the thin wall is preferably 0.5-1 cm.

[0053] In addition, the material of the thin wall is preferably stainless steel.

[0054] Since the wall thickness of the above-mentioned thin wall is small, its strength is low. When the die-cast parts with higher temperature are shaped, the thin wall will be deformed due to the high temperature and the surface tension of the die-cast parts, resulting in a decrease in its shaping accuracy. In order to solve this problem, a pressure rod 700 is arranged in the cooling chamber. The pressure rod 700 is evenly located on the thin wall, and the end of the pressure rod 700 close to the thin wall is a spherical head. The spherical head is pressed on the thin wall to press the thin wall tightly against the die-cast part, thereby avoiding deformation of the thin wall and ensuring the shaping accuracy of the die-cast part.

[0055] Therefore, the cold die mold in the embodiment of the present invention can maintain the cold shaping accuracy of the die-casting parts on the basis of improving the cooling efficiency.

[0056] In addition, the spherical head is set because the contact area between the spherical head and the thin wall is small, which can reduce the area covered by the pressure rod 700 on the thin wall, thereby further increasing the contact area between the cooling water and the thin wall and improving the cooling efficiency.

[0057] like Figure 4 and Fig. 9 As shown, in order to enable the pressure rod 700 to generate pressure on the thin wall, an extrusion assembly is also provided here. The extrusion assembly is used to push the pressure rod 700 so that the pressure rod 700 provides pressure to the thin wall to maintain the shape of the thin wall and the die casting in the cooling state of the thin wall. The extrusion assembly is a side extrusion assembly and / or a forward extrusion assembly 600.

[0058] like Fig. 9 In the state shown, the left side of the cam is provided with a side extrusion assembly, and the right side is extruded by a combination of the side extrusion assembly and the forward extrusion assembly 600. The extrusion method to be adopted mainly depends on the outer surface morphology of the die-cast part. When the upper and lower surfaces of the left side of the cam in the figure are extruded by the side extrusion method, the force direction of the pressure rod 700 is consistent with the direction required for pressing, so the pressure utilization rate can reach the maximum. The upper and lower surfaces of the right side of the cam adopt the side extrusion method, and the forward extrusion method is adopted on the right side. In this case, the pressure utilization rate of the pressure rod 700 on the right side can also be improved.

[0059] In order to enable the pressure rod 700 to apply pressure when the cold mold is closed, a thrust slider 372 is fixedly provided at the end of the power rod 370 close to the cold mold, and a track groove 450 for the thrust slider 372 to move is provided on the cold left mold 421 and the cold right mold 422. The movement of the thrust slider 372 is used to drive the side extrusion component and / or the forward extrusion component 600 to work or not work, that is, when the thrust slider 372 slides along the track groove 450, when the cold mold is fully closed, the thrust slider 372 reaches the position of pushing the extrusion component, thereby realizing the pressure of the pressure rod 700 on the thin wall.

[0060] like Figure 8 - Fig.11 As shown, the side extrusion assembly mentioned above includes a fixed seat 550, which is fixed in the cooling chamber, and the middle section of the pressure rod 700 is rotatably mounted on the fixed seat 550 through a fixed pin shaft 570. When the pressure rod 700 is displaced away from one end of the thin wall, the pressure rod 700 will rotate along the fixed pin shaft 570, so that the other end of the pressure rod 700 can extrude the thin wall by side extrusion.

[0061] In order to achieve displacement of the end of the pressure rod 700 away from the thin wall, a tension seat 540 is also provided. The tension seat 540 is located at the end of the pressure rod 700 away from the thin wall, and the pressure rod 700 and the tension seat 540 are rotatably connected via a movable pin shaft 560. A force-bearing part 530 is fixedly provided at one end of the tension seat 540 close to the thrust slider 372.

[0062] In the present embodiment, when the thrust slider 372 slides along the track groove 450 and passes through the force-bearing part 530, it can apply tension to the force-bearing part 530 to pull the tension seat 540, so that the pressure rod 700 has a tendency to rotate along the fixed pin shaft 570, so that the spherical head of the pressure rod 700 squeezes the thin wall to achieve pressure on the thin wall. Conversely, when the cold mold is opened, the thrust slider 372 slides in the opposite direction along the track groove 450 and disengages from the force-bearing part 530, and the pressure rod 700 no longer applies pressure to the thin wall.

[0063] like Figure 8 - Fig.11 As shown, the above-mentioned positive extrusion component 600 includes a tension plate 610, which is located on the side of the pressure rod 700 away from the thin wall, and a force-bearing part 2 660 is provided on the side of the tension plate 610 close to the thrust slider 372. When the thrust slider 372 passes through the force-bearing part 2 660, it can apply force to the force-bearing part 2 660 to move the tension plate 610. A slope part 630 is installed on the side of the tension plate 610 close to the pressure rod 700, and the slope height of the slope part 630 gradually increases along the moving direction of the tension plate 610; a limit seat 670 is also provided, which is fixed in the cooling chamber, and the limit seat 670 is located between the tension plate 610 and the thin wall, the pressure rod 700 is inserted on the limit seat 670, and a spring 2 650 is installed between the limit seat 670 and the tension plate 610.

[0064] In this embodiment, when the thrust slider 372 slides along the track groove 450, it can pass through the force-bearing portion 660 so that the force-bearing portion 660 applies a pulling force to the tension plate 610. This pulling force can make the slope portion 630 with a higher slope direction have a tendency to approach the pressure rod 700, so that the pressure rod 700 can squeeze the thin wall.

[0065] In addition, when the pressure rod 700 squeezes the thin wall, the spring 2 650 tends to be compressed, and vice versa, it tends to rebound.

[0066] In fact, the desired effect can be achieved without these two springs, but the effect is better after assembling the springs, but the cost will also increase accordingly.

[0067] Combination Fig. 9 and Fig.10 As shown, in order to achieve the tendency of the tension plate 610 to reset or a slight reset when the tension of the thrust slider 372 is lost, the positive extrusion assembly 600 further includes a positioning seat 620, which is fixed to the side of the tension plate 610 away from the pressure rod 700, and a spring 640 is fixed to one side of the positioning seat 620, and the other end of the spring 640 is fixed to the inner wall of the cooling chamber.

[0068] It is worth noting that the above-mentioned side extrusion assembly and the front extrusion assembly 600 can also be used at the same time. When the side extrusion assembly and the front extrusion assembly 600 are used at the same time, Fig. 9 The state in the middle cooling right mold 422, at this time, the force-bearing part 660 is rotatably mounted on the tension seat 540 and the tension plate 610 respectively.

[0069] Combination Figure 5 and Fig.12 As shown, since the die-cast part after casting has a gate, and the gate will affect the appearance of the die-cast part, and will also cause the die-cast part to be unable to enter the hot mold and the cold mold, it needs to be cut off, and a cutting knife 900 is installed on the side of the hot upper mold 411 close to the hot lower mold 412, and a cutting groove 910 adapted to the cutting knife 900 is opened on the hot lower mold 412. When the hot upper mold 411 and the hot lower mold 412 are relatively close, the cutting knife 900 can cut off the gate, and after the mold is closed, the cutting knife 900 enters the cutting groove 910.

[0070] Preferably, the cutting groove 910 is gradually inclined outward and downward to facilitate the discharge of cutting debris.

[0071] Combination Figure 1 - Figure 3 As shown, since the clamping mechanism 200 includes a second clamping block 240 and a cylinder 220, the cylinder 220 is installed above the base 100 through a cylinder frame 210, the second clamping block 240 is located on the side of the middle of the mold close to the driving mechanism 300, the cylinder 220 is located on the side of the middle of the mold away from the second clamping block 240, and the first clamping block 230 is fixed to the end of the piston rod of the cylinder 220. The cylinder 220 is extended so that the second clamping block 240 and the first clamping block 230 clamp the die-casting.

[0072] The hot upper mold 411, the hot lower mold 412, the cold left mold 421 and the cold right mold 422 are all provided with accommodating grooves 430 for accommodating the second clamping block 240 and the first clamping block 230, thereby ensuring that the die-cast parts can enter the hot upper mold 411 and the hot lower mold 412, the cold left mold 421 and the cold right mold 422.

[0073] When in use (working), the die-casting part is first placed between the first clamping block 230 and the second clamping block 240, and the first clamping block 230 and the second clamping block 240 are clamped together by driving the cylinder 220 to extend, and after clamping, the two-way screw rod 320 is driven by the motor 390 to drive the two nuts 330 to approach each other, and then the hot upper mold 411 and the hot lower mold 412 are molded together. During the mold closing process, the cutting knife 900 cuts off the gate, and the gate after cutting can be discharged downward along the cutting groove 910. In addition, during the mold closing process of the hot upper mold 411 and the hot lower mold 412, due to the power rod 370, the cold left mold 421 and the cold right mold 422 are separated from each other. After the hot upper mold 411 and the hot lower mold 412 are molded together, the heating wire 440 heats the die-casting part. After the hot shaping is completed, the driving motor 390 drives the screw rod 220 to rotate in the reverse direction, so that the two nuts 330 move away from each other, that is, the hot upper mold 411 and the hot lower mold 412 are opened, and at the same time, the power rod 370 drives the cold left mold 421 and the cold right mold 422 to approach each other. In the process of the two approaching each other, the thrust slider 372 slides in the track groove 450 until the cold left mold 421 and the cold right mold 422 are closed. The thrust slider 372 can drive the extrusion assembly to work, so that the pressure rod 700 can generate pressure on the thin wall to maintain the shape of the thin wall, and then indirectly maintain the shape of the die-cast part. After the cold left mold 421 and the cold right mold 422 are closed, the cooling water in the cooling chamber can cool the die-cast part through the thin wall.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0075] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A corrective shearing device for fixing die-cast parts, characterized in that: include: A mold, the mold comprising a hot mold and a cold mold, the hot mold comprising a hot upper mold (411) and a hot lower mold (412) arranged side by side in an upper and lower manner, the cold mold comprising a cold left mold (421) and a cold right mold (422) arranged side by side in a left and right manner, the hot mold and the cold mold are both provided with a cavity for accommodating a die-casting part, and the hot mold and the cold mold are arranged in a rhombus-shaped four corner point orientation; A driving mechanism (300), wherein the driving mechanism (300) is disposed on one side of the mold, and the driving mechanism (300) is used to drive the cold left mold (421) and the cold right mold (422) to open the mold when the hot upper mold (411) and the hot lower mold (412) are closed, or to drive the hot upper mold (411) and the hot lower mold (412) to open the mold when the cold left mold (421) and the cold right mold (422) are closed; A clamping mechanism (200), the clamping mechanism (200) being located on a vertical line of a plane formed by the hot mold and the cold mold, and the clamping mechanism (200) being used to clamp the die-casting part so that the position of the die-casting part is locked when the hot mold and the cold mold are both separated from the die-casting part; It also includes a base (100), wherein the driving mechanism (300) is arranged above the base (100); The driving mechanism (300) comprises: A bidirectional screw rod (320), the bidirectional screw rod (320) being rotatably mounted on the base (100) in the Z-axis direction, and a nut (330) being symmetrically threadedly connected to the bidirectional screw rod (320), and the hot upper mold (411) and the hot lower mold (412) being fixed on corresponding nuts (330) so that the hot upper mold (411) and the hot lower mold (412) can move relative to or towards each other; An X-axis guide rod (340), the X-axis guide rod (340) being vertically arranged at the middle of the bidirectional screw rod (320), and an X-axis guide block (380) being symmetrically sleeved on the X-axis guide rod (340), and the cold right mold (422) and the cold left mold (421) being fixed on the corresponding X-axis guide blocks (380); A power rod (370), wherein the power rod (370) is hinged between adjacent X-axis guide blocks (380) and nuts (330), and four of the power rods (370) form a quadrilateral structure; A main frame (310), the main frame (310) being arranged above the base (100), and a driving motor (390) for driving the bidirectional screw rod (320) to rotate being installed on the main frame (310); Both ends of the power rod (370) are provided with gear-shaped heads (371), and two adjacent gear-shaped heads (371) are meshed; A Z-axis guide block (350) is fixedly disposed on one side of the nut (330), and a Z-axis guide rod (360) for guiding the Z-axis guide block (350) is mounted on the main frame (310); The cold left mold (421) and the cold right mold (422) have cooling cavities in them, the interiors of the cooling cavities contain cooling water, and the cooling cavities cool the die-casting parts through the inner walls of the mold cavities; The inner wall of the cavity is set to be thin to improve cooling efficiency; A pressure rod (700) is provided in the cooling cavity, the pressure rod (700) is evenly located on the thin wall, and one end of the pressure rod (700) close to the thin wall is a spherical head; An extrusion assembly is also provided, the extrusion assembly is used to push a pressure rod (700) so that the pressure rod (700) provides pressure for the thin wall, so as to maintain the shape of the thin wall and the die-cast part in a cooling state of the thin wall, the extrusion assembly is a side extrusion assembly and / or a positive extrusion assembly (600), the side extrusion assembly is used to extrude the thin wall by side pressure, and the positive extrusion assembly (600) is used to extrude the thin wall by positive pressure; A thrust slider (372) is fixedly provided at one end of the power rod (370) close to the cold mold, and a track groove (450) for the thrust slider (372) to move is provided on the cold left mold (421) and the cold right mold (422). The movement of the thrust slider (372) is used to drive the side extrusion component and / or the forward extrusion component to work or not work.

2. A corrective shearing device for fixing die-cast parts according to claim 1, characterized in that: The side extrusion assembly comprises: A fixed seat (550), the fixed seat (550) being fixed in the cooling chamber, and the middle section of the pressure rod (700) being rotatably mounted on the fixed seat (550) via a fixed pin shaft (570); A tension seat (540), wherein the tension seat (540) is located at an end of the pressure rod (700) away from the thin wall, and the pressure rod (700) and the tension seat (540) are rotatably connected via a movable pin shaft (560), and a force-bearing portion (530) is fixedly provided at one end of the tension seat (540) close to the thrust slider (372), and when the thrust slider (372) passes through the force-bearing portion (530), a tension can be applied to the force-bearing portion (530), so that the pressure rod (700) has a tendency to rotate along the fixed pin shaft (570), so that the spherical head of the pressure rod (700) squeezes the thin wall.

3. A corrective shearing device for fixing die-cast parts according to claim 2, characterized in that: The forward extrusion assembly (600) comprises: A tension plate (610), the tension plate (610) being located on a side of the pressure rod (700) away from the thin wall, and a second force-bearing portion (660) being provided on a side of the tension plate (610) close to the thrust slider (372), and the thrust slider (372) being able to exert force on the second force-bearing portion (660) when passing through the second force-bearing portion (660) to move the tension plate (610); A slope portion (630), the slope portion (630) being located on a side of the tension plate (610) close to the pressure rod (700), and the slope height of the slope portion (630) gradually increases along the moving direction of the tension plate (610); The limit seat (670) is fixed in the cooling cavity and is located between the tension plate (610) and the thin wall. The pressure rod (700) is inserted into the limit seat (670). A second spring (650) is installed between the limit seat (670) and the tension plate (610).

4. A corrective shearing device for fixing die-cast parts according to claim 3, characterized in that: The forward extrusion assembly further comprises: A positioning seat (620), wherein the positioning seat (620) is fixed to a side of the tension plate (610) away from the pressure rod (700), and a spring 1 (640) is fixed to one side of the positioning seat (620), and the other end of the spring 1 (640) is fixed to the inner wall of the cooling chamber.

5. A corrective shearing device for fixing die-cast parts according to any one of claims 1 to 4, characterized in that: A cutting knife (900) is installed on one side of the hot upper mold (411) close to the hot lower mold (412), and a cutting groove (910) adapted to the cutting knife (900) is provided on the hot lower mold (412).

6. A corrective shearing device for fixing die-cast parts according to claim 5, characterized in that: The clamping mechanism (200) comprises a second clamping block (240) and a cylinder (220), wherein the second clamping block (240) is located at a side of the middle of the mold close to the driving mechanism (300), and the cylinder (220) is located at a side of the middle of the mold away from the second clamping block (240), and a first clamping block (230) is fixedly arranged at the end of the piston rod of the cylinder (220), and the cylinder (220) is extended so that the second clamping block (240) and the first clamping block (230) clamp the die-cast part: The hot upper mold (411), the hot lower mold (412), the cold left mold (421) and the cold right mold (422) are all provided with an accommodating groove (430) for accommodating the second clamping block (240) and the first clamping block (230).

Images