Die for aluminum alloy casting

Abstract

The utility model belongs to the technical field of aluminum alloy casting, and particularly relates to an aluminum alloy casting die which comprises a base, the top of the base is fixedly connected with a supporting seat through a fixing rod, the top of the supporting seat is fixedly connected with a lower die, and the bottom of the supporting seat is provided with a lifting frame. The top of the lifting frame extends into the lower mold and is slidably connected with an ejector rod, a first spring is arranged in the lifting frame and located at the bottom of the ejector rod, and fixing frames are fixedly connected to the outer portion of the supporting base at equal intervals. The utility model provides a die for casting aluminum alloy, and solves the problems that in the prior art, although a casting is more uniformly stressed and is prevented from being damaged by ejection through round ejection heads which are arranged in a rectangular manner, the product is adhered to the inner wall of a lower die in the actual production process; the problems that if ejection is directly conducted through an ejection head, the surface of a product is prone to being damaged, defective products appear, the production quality of aluminum alloy casting is reduced, and meanwhile the casting efficiency is affected are solved.

Description

Technical Field

[0001] The utility model belongs to the field of aluminum alloy casting, in particular to a mold for aluminum alloy casting. Background Art

[0002] Casting is the process of pouring molten metal into a mold and obtaining parts with the desired shape and performance through cooling and solidification. Casting is a commonly used manufacturing method with low manufacturing cost and great process flexibility. It can obtain complex shapes and large castings, and occupies a large proportion in mechanical manufacturing. The main casting process includes metal smelting, model making, pouring solidification, demolding and cleaning.

[0003] After searching, a Chinese patent discloses a mold for aluminum alloy casting that facilitates demolding of castings (authorization announcement number CN212264499 U). The patented technology includes a first mold and a second mold. The second mold is installed on the upper end of the first mold. When the sleeve needs to be connected to the hydraulic cylinder as a power device for ejecting the first mold shell, the locking devices on both sides can be rotated so that the movable clamping ring pushes the clamp to clamp the piston rod of the hydraulic cylinder. This rotary locking device can lock hydraulic cylinders of different diameters to facilitate the connection of the device. When the casting of the first mold shell needs to be ejected, the hydraulic cylinder pushes the sleeve, the sleeve pushes the ejector rod, and the ejector rod pushes the ejector plate, so that the dome head installed in a rectangular arrangement ejects the casting. This dome head installed in a rectangular arrangement can make the casting more evenly stressed when ejecting the casting, prevent the casting from being damaged, and improve the quality of the casting discharge.

[0004] Although this technology can make the casting more evenly stressed by the dome heads installed in a rectangular arrangement to prevent the casting from being damaged, the product will adhere to the inner wall of the lower mold during the actual production process. If it is ejected directly by the head, it is easy to cause damage to the surface of the product, resulting in defective products, which reduces the production quality of aluminum alloy casting and affects the casting efficiency. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a mold for aluminum alloy casting.

[0006] The technical solution of the utility model is as follows: a mold for aluminum alloy casting, comprising a base, the top of the base is fixedly connected to a support base through a fixing rod, the top of the support base is fixedly connected to a lower mold, a lifting frame is provided at the bottom of the support base, the top of the lifting frame extends to the inside of the lower mold and is slidably connected to a push rod, a first spring is provided inside the lifting frame and at the bottom of the push rod, the outside of the support base is equidistantly fixedly connected to a fixing frame, the inside of the fixing frame is slidably connected to a slider, a knocking column is fixedly connected to the inside of the slider, the knocking column is slidably connected to the fixed frame, the top of the support base is equidistantly provided with knocking components, and the top of the base is provided with a transmission component.

[0007] As a preferred embodiment, the knocking assembly includes a gear, which is equidistantly rotatably connected to the top of the support seat through a rotating column, and the inner sides of multiple groups of the fixed frames are fixedly connected to a limiting rod, the top of the limiting rod is slidably connected to a gear ring, the gear is meshingly connected to the gear ring, the top of the gear is fixedly connected to an arc block, the bottom side of the knocking column is fixedly connected to a push rod that matches the arc block, and a second spring is arranged on the outside of the knocking column and between the slider and the fixed frame.

[0008] As a preferred embodiment, the transmission assembly includes a motor, the motor is fixedly connected to the top of the base, the output end of the motor is fixedly connected to a screw, the lifting frame is threadedly connected to the outside of the screw, the outside of the screw is fixedly connected to a first pulley, the top side of the base is fixedly connected to a rotating rod, the outside of the rotating rod is fixedly connected to a second pulley, the first pulley and the second pulley are connected by a transmission belt, and the top of the rotating rod extends to the top of the support seat and is fixedly connected to one of the gears.

[0009] As a preferred implementation, the diameter of the second pulley is smaller than the diameter of the first pulley.

[0010] As a preferred embodiment, the top of the fixing rod is fixedly connected to a support frame, the interior of the support frame is fixedly connected to a cylinder, and the output end of the cylinder is fixedly connected to an upper mold.

[0011] As a preferred embodiment, a slide groove is provided at the bottom of the gear ring, and the gear ring is slidably connected to the limit rod inside the fixed frame through the slide groove, and the motor and the cylinder are electrically connected to an external controller.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The device repeatedly pushes the push rod during the rotation of the arc block, so that the push rod drives the knocking column to move to one side of the fixed frame, and squeezes the second spring through the slider to deform the second spring. When the arc block rotates to disengage from the push rod, the knocking column can be driven to knock on the lower mold under the rebound force of the second spring, thereby achieving continuous knocking on the lower mold, thereby creating a gap between the casting inside the lower mold and the inner wall of the lower mold, which is convenient for subsequent casting ejection processing and improves the demoulding efficiency.

[0014] 2. When the lead screw rotates, the lifting frame can be driven to rise under the limit of the support seat through the threaded connection relationship. During the rising process, the first spring is squeezed. During the idle period of squeezing the first spring, the knocking column can be used to knock the lower mold in advance, so that a sufficient gap is generated between the casting and the inner wall of the lower mold. When the lifting frame fully squeezes the first spring, the ejector rod can be pushed to rise, so that the casting inside the lower mold can be ejected by the ejector rod. The multiple ejector rods arranged on the top of the lifting frame can effectively improve the contact point with the casting, thereby improving the force uniformity of the casting and preventing the situation where a single ejector rod may cause damage to the casting, thereby improving the discharge quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a cross-sectional view of the lifting frame in the utility model;

[0019] Figure 4 For the utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 5 For the utility model Figure 2 Enlarged view of point B in the middle.

[0021] In the figure: 1. base; 2. support seat; 3. lower mold; 4. push rod; 5. lifting frame; 6. first spring; 7. fixed frame; 8. slider; 9. knock column; 10. motor; 11. screw; 12. first pulley; 13. rotating rod; 14. second pulley; 15. transmission belt; 16. gear ring; 17. gear; 18. arc block; 19. push rod; 20. second spring; 21. support frame; 22. cylinder; 23. upper mold. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1-5 A mold for aluminum alloy casting comprises a base 1, the top of the base 1 is fixedly connected to a support base 2 through a fixing rod, the top of the support base 2 is fixedly connected to a lower mold 3, a lifting frame 5 is provided at the bottom of the support base 2, the top of the lifting frame 5 extends to the inside of the lower mold 3 and is slidably connected to a push rod 4, a first spring 6 is provided inside the lifting frame 5 and at the bottom of the push rod 4, a fixing frame 7 is equidistantly fixedly connected to the outside of the support base 2, a slider 8 is slidably connected to the inner side of the fixing frame 7, a knocking column 9 is fixedly connected to the inside of the slider 8, the knocking column 9 is slidably connected to the fixing frame 7, a knocking assembly is equidistantly provided on the top of the support base 2, and a transmission assembly is provided on the top of the base 1.

[0024] Specifically, the knocking assembly includes a gear 17, which is equidistantly rotatably connected to the top of the support seat 2 through a rotating column, and the inner sides of the multiple sets of fixed frames 7 are fixedly connected to the limit rods, and the top of the limit rods is slidably connected to the ring gear 16, and the gear 17 is meshed with the ring gear 16. The top of the gear 17 is fixedly connected to an arc block 18, and the bottom side of the knocking column 9 is fixedly connected to a push rod 19 that matches the arc block 18. A second spring 20 is arranged outside the knocking column 9 and between the slider 8 and the fixed frame 7. The transmission assembly includes a motor 10 The motor 10 is fixedly connected to the top of the base 1, the output end of the motor 10 is fixedly connected to the lead screw 11, the lifting frame 5 is threadedly connected to the outside of the lead screw 11, the outside of the lead screw 11 is fixedly connected to the first pulley 12, the top side of the base 1 is fixedly connected to a rotating rod 13, the outside of the rotating rod 13 is fixedly connected to a second pulley 14, the first pulley 12 and the second pulley 14 are connected by a transmission belt 15, and the top of the rotating rod 13 extends to the top of the support seat 2 and is fixedly connected to one of the gears 17.

[0025] Through the above technical scheme, when demoulding is required after pouring, the output end of the cylinder 22 is first controlled by the external controller to shrink, thereby driving the upper mold 23 to rise, and then the motor 10 is started by the external controller, and the output end of the motor 10 drives the screw 11 to rotate, so that the screw 11 drives the external first pulley 12 to rotate, and the first pulley 12 then drives the rotating rod 13 to rotate through the second pulley 14 and the transmission belt 15, and the rotating rod 13 can drive the top gear 17 to rotate, and then drive the gear ring 16 to rotate through the meshing relationship between the gear 17 and the ring gear 16, so that the ring gear 16 then synchronously drives the remaining gears 17 to rotate through the meshing relationship, and the gear 17 then drives the top arc block 18 to rotate, and the arc block 18 repeatedly pushes the push rod 19 during the rotation process, so that the push rod 19 drives the knocking column 9 to move to one side of the fixed frame 7, and squeezes the second spring 20 through the slider 8, so that the second spring 20 is deformed, and when the arc block 18 rotates When the push rod 19 is disengaged, the knocking column 9 can be driven to knock the lower mold 3 under the rebound force of the second spring 20, so that a gap is generated between the casting inside the lower mold 3 and the inner wall of the lower mold 3, which is convenient for the subsequent casting ejection processing and improves the demoulding efficiency. When the lead screw 11 rotates, the lifting frame 5 can be driven to rise under the limit of the support seat 2 through the threaded connection relationship, and the first spring 6 is squeezed during the rising process. During the idle period of the squeezing of the first spring 6, the knocking column 9 can be convenient for the knocking column 9 to knock the lower mold 3 in advance, so that a sufficient gap is generated between the casting and the inner wall of the lower mold 3. When the lifting frame 5 fully squeezes the first spring 6, the ejector rod 4 can be pushed to rise, so that the casting inside the lower mold 3 is ejected by the ejector rod 4. The multiple ejector rods 4 arranged on the top of the lifting frame 5 can effectively increase the contact point with the casting, thereby improving the force uniformity of the casting and preventing the situation that a single ejector rod 4 may cause damage to the casting, thereby improving the discharge quality.

[0026] Specifically, the diameter of the second pulley 14 is smaller than that of the first pulley 12 , the top of the fixed rod is fixedly connected to a support frame 21 , the interior of the support frame 21 is fixedly connected to a cylinder 22 , and the output end of the cylinder 22 is fixedly connected to an upper mold 23 .

[0027] Through the above technical solution, since the diameter of the second pulley 14 is smaller than the diameter of the first pulley 12, the second pulley 14 can drive the rotating rod 13 and the gear 17 to rotate more circles, thereby increasing the frequency of knocking on the lower mold 3.

[0028] Specifically, a slide groove is provided at the bottom of the gear ring 16, and the gear ring 16 is slidably connected to the limit rod inside the fixing frame 7 through the slide groove, and the motor 10 and the cylinder 22 are electrically connected to the external controller.

[0029] Through the above technical solution, the ring gear 16 can be effectively limited by the setting of the limiting rod, and the motor 10 can be used to facilitate the staff to quickly control the motor 10 and the cylinder 22.

[0030] When in use, when demoulding is required after pouring is completed, the output end of the cylinder 22 is first controlled to contract through the external controller, thereby driving the upper mold 23 to rise, and then the motor 10 is started through the external controller, and the output end of the motor 10 drives the lead screw 11 to rotate, so that the lead screw 11 drives the external first pulley 12 to rotate, and the first pulley 12 then drives the rotating rod 13 to rotate through the second pulley 14 and the transmission belt 15, and the rotating rod 13 can drive the top gear 17 to rotate, and then drive the gear ring 16 to rotate through the meshing relationship between the gear 17 and the gear ring 16. The gear ring 16 then drives the other gears 17 to rotate synchronously through the meshing relationship, and the gear 17 then drives the arc block 18 on the top to rotate. The arc block 18 repeatedly pushes the push rod 19 during the rotation process, so that the push rod 19 drives the knocking column 9 to move to one side of the fixed frame 7, and squeezes the second spring 20 through the slider 8, so that the second spring 20 is deformed. When the arc block 18 rotates and disengages from the push rod 19, the knocking column 9 can be driven to knock the lower mold 3 under the rebound force of the second spring 20, so that the casting inside the lower mold 3 and the inner wall of the lower mold 3 are spaced apart. The gap is convenient for the subsequent ejection of the casting, and the efficiency of demoulding is improved. When the lead screw 11 rotates, the lifting frame 5 can be driven to rise under the limit of the support seat 2 through the threaded connection relationship, and the first spring 6 is squeezed during the rising process. During the idle period of the squeezing process of the first spring 6, the knocking column 9 can be used to knock the lower mold 3 in advance, so that a sufficient gap is generated between the casting and the inner wall of the lower mold 3. When the lifting frame 5 fully squeezes the first spring 6, the ejector rod 4 can be pushed to rise, so that the casting inside the lower mold 3 is ejected by the ejector rod 4. The top of the lifting frame 5 is provided with The multiple ejector rods 4 can effectively improve the contact points with the casting, thereby improving the force uniformity of the casting and preventing a single ejector rod 4 from causing damage to the casting, thereby improving the discharge quality. Since the diameter of the second pulley 14 is smaller than the diameter of the first pulley 12, the second pulley 14 can drive the rotating rod 13 and the gear 17 to rotate more circles, thereby increasing the knocking frequency of the lower mold 3. The limit rod can effectively limit the gear ring 16, and the motor 10 can be used to facilitate the staff to quickly control the motor 10 and the cylinder 22.

[0031] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, 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, and 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 limiting the scope of protection of the present invention.

[0033] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mold for aluminum alloy casting, comprising a base (1), It is characterized in that The top of the base (1) is fixedly connected to a support base (2) via a fixing rod, the top of the support base (2) is fixedly connected to a lower mold (3), a lifting frame (5) is provided at the bottom of the support base (2), the top of the lifting frame (5) extends to the inside of the lower mold (3) and is slidably connected to a push rod (4), a first spring (6) is provided inside the lifting frame (5) and located at the bottom of the push rod (4), the outside of the support base (2) is equidistantly fixedly connected to a fixing frame (7), the inside of the fixing frame (7) is slidably connected to a sliding block (8), the inside of the sliding block (8) is fixedly connected to a knocking column (9), the knocking column (9) is slidably connected to the fixing frame (7), the top of the support base (2) is equidistantly provided with knocking components, and the top of the base (1) is provided with a transmission component.

2. The aluminum alloy casting mold according to claim 1, It is characterized in that The knocking assembly comprises a gear (17), the gear (17) being equidistantly rotatably connected to the top of the support seat (2) via a rotating column, the inner sides of the plurality of groups of the fixing frames (7) are fixedly connected to limit rods, the top of the limit rods is slidably connected to a gear ring (16), the gear (17) is meshingly connected to the gear ring (16), the top of the gear (17) is fixedly connected to an arc block (18), the bottom side of the knocking column (9) is fixedly connected to a push rod (19) matching the arc block (18), and a second spring (20) is arranged outside the knocking column (9) and between the slider (8) and the fixing frame (7).

3. The aluminum alloy casting mold according to claim 2, It is characterized in that The transmission assembly comprises a motor (10), wherein the motor (10) is fixedly connected to the top of the base (1), the output end of the motor (10) is fixedly connected to a lead screw (11), the lifting frame (5) is threadedly connected to the outside of the lead screw (11), the outside of the lead screw (11) is fixedly connected to a first pulley (12), a rotating rod (13) is fixedly connected to one side of the top of the base (1), a second pulley (14) is fixedly connected to the outside of the rotating rod (13), the first pulley (12) and the second pulley (14) are connected to each other by a transmission belt (15), and the top of the rotating rod (13) extends to the top of the support seat (2) and is fixedly connected to one of the gears (17).

4. The aluminum alloy casting mold according to claim 3, It is characterized in that The diameter of the second pulley (14) is smaller than the diameter of the first pulley (12).

5. The aluminum alloy casting mold according to claim 4, It is characterized in that The top of the fixed rod is fixedly connected to a support frame (21), the interior of the support frame (21) is fixedly connected to a cylinder (22), and the output end of the cylinder (22) is fixedly connected to an upper mold (23).

6. The aluminum alloy casting mold according to claim 5, It is characterized in that A sliding groove is provided at the bottom of the gear ring (16), and the gear ring (16) is slidably connected to a limit rod on the inner side of the fixing frame (7) via the sliding groove. The motor (10) and the cylinder (22) are both electrically connected to an external controller.

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