Die casting thermal correction equipment

Abstract

The utility model discloses die casting thermal shape righting equipment which is used for performing thermal shape righting on a die casting with waste heat after die casting, and a shape righting device drives an upper die plate and a lower die plate to be buckled on the upper surface and the lower surface of the die casting through a hydraulic system so as to perform thermal shape righting on the die casting. The upper supporting rod comprises a spring, a baffle ring and a rod cap, the upper supporting rod penetrates through the upper die plate, the rod cap of the upper supporting rod is reserved at the upper end of the upper die plate, the baffle ring is arranged at the lower end of the upper die plate and fixedly connected with the supporting rod, the spring is installed between the baffle ring and the lower surface of the upper die plate, and the lower end of the upper supporting rod is used for supporting the upper surface of a die casting. A lower supporting rod is arranged on the lower die plate, a mounting groove is formed in the top face of the lower die plate, the lower supporting rod is vertically placed in the mounting groove, and the upper end of the lower supporting rod is used for being supported on the lower surface of the die casting. According to the method, thermal correction is directly carried out under the condition that the die casting keeps waste heat, the correction amount is large, and the fracturing phenomenon of the die casting is also avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of die casting, and specifically relates to a thermal correction device for die castings. Background Art

[0002] High-pressure die casting is to fill the molten metal into the mold, and the molten metal solidifies in the mold. Due to the difference in local thickness of the structure, the thermal stress generated during the transformation of the hot metal into a solid state will cause the die casting to deform, which in turn causes the die casting to fail to meet the design requirements. Therefore, it is usually necessary to correct the die casting after the die casting is completed.

[0003] In the prior art, the methods for correcting the deformation of die castings are:

[0004] 1. Manual knocking correction: put the product on a profiling jig to measure the deformation, and then use a rubber hammer or copper rod to knock it to get the required product size. This method has a large workload and low work efficiency.

[0005] 2. Automated cold correction: After the product is cooled, a trimming machine and a mold correction station are set up on the post-processing automation line. The deformation of the produced product is detected and the robot is placed on the contoured mold for compression correction. This method requires secondary loading; it is difficult to correct the cold product when the deformation exceeds 3 mm.

[0006] 3. Automated heating correction: the deformation of the product is measured after it cools down. However, since it is difficult to correct a cold product with large deformation, a heating system needs to be designed on the mold to heat the product and avoid fracturing of the corrected product due to large deformation (more than 3 mm). This method requires a heat source, which increases consumption; the product heating is limited (below 60°C), and the correction effect is often not ideal. Utility Model Content

[0007] The utility model aims at the defects of the prior art that the amount of correction by cold correction is small and the later heating is required for hot correction. The die casting is hot corrected without a significant temperature drop after die casting, and no later heating is required, thereby reducing energy consumption. The die casting retains residual temperature, which avoids the phenomenon of orthopedic products being fractured due to large changes. The lower template adjusts the height of the lower support rod through the pad, and the upper template adapts to the different heights of the upper surface of the die casting through the elasticity of the spring, making the orthopedic device more applicable. The measurement reading component is placed across the measurement reference, which can quickly and simultaneously measure multiple sets of data, so as to correct the amount of depression of the orthopedic device in time.

[0008] The present application provides a die casting thermal correction device, which is used to perform thermal correction on a die casting with residual temperature after die casting, comprising:

[0009] The correction device drives the upper and lower mold plates to buckle on the upper and lower surfaces of the die casting through the hydraulic system, thereby performing thermal correction on the die casting.

[0010] An upper support rod is arranged on the upper template, and the upper support rod includes a spring, a retaining ring and a rod cap. The upper support rod passes through the upper template, and its rod cap is left at the upper end of the upper template, and the retaining ring is at the lower end of the upper template. The retaining ring is fixedly connected to the upper support rod, and a spring is installed on the upper support rod between the retaining ring and the lower surface of the upper template. The lower end of the upper support rod is used to support the upper surface of the die casting.

[0011] A lower support rod is arranged on the lower template, a mounting groove is arranged on the top surface of the lower template, the lower support rod is vertically placed in the mounting groove, and the upper end of the lower support rod is used to support the lower surface of the die casting.

[0012] Optionally, the orthopedic device also includes a support leg, a base plate, a Corinthian column and a middle plate, the support leg is fixedly connected to the lower end of the base plate, the lower template is fixedly connected to the upper end of the base plate, and multiple Corinthian columns extend vertically upward from the base plate outside the four corners of the lower template. The middle plate is slidably connected to the Corinthian columns, and the upper template is fixedly connected to the lower surface of the middle plate. The hydraulic output end of the hydraulic system is connected to the upper end of the middle plate to drive the middle plate to slide along the Corinthian columns.

[0013] Optionally, the height of the lower support rod is adjusted by placing pads of different thicknesses at the bottom of the mounting groove.

[0014] Optionally, a measuring device is also included, which includes a supporting platform, supporting columns and a measuring reading assembly, wherein a plurality of supporting columns for supporting the lower surface of the die-casting are provided at the upper end of the supporting platform, and the measuring reading assembly includes a cross bar and a dial indicator, wherein a plurality of dial indicators are fixedly connected to the cross bar at intervals along the length direction of the cross bar, and the probes of the plurality of dial indicators face downward.

[0015] Optionally, it also includes a measuring reference, which is two horizontal slide rails set at intervals and located at both ends of the supporting platform. The upper end surfaces of the horizontal slide rails are parallel to the upper end surface of the supporting platform. The die-casting to be measured is placed between the two horizontal slide rails, and the two ends of the cross bar of the measurement reading component are used to rest on the upper end surfaces of the horizontal slide rails.

[0016] Optionally, a plurality of water nozzles and air nozzles are provided on both the upper template and the lower template.

[0017] Optionally, the measuring device further includes a leveling foot, and the leveling foot is supported on the lower end of the supporting platform.

[0018] Optionally, handles are provided at both ends of the crossbar.

[0019] Optionally, it also includes a robot, which is arranged on a track, one end of which is the die-casting machine, and the other end of which is the product output line. The slag removal device, the measuring device and the correction device are distributed on both sides of the track.

[0020] Optionally, the residual temperature is greater than 100°C.

[0021] The utility model has the following beneficial effects:

[0022] (1) After the hot die casting is removed by the slag removal device, it is directly subjected to thermal correction while the die casting is still at residual temperature. The correction amount is large and the cracking of the die casting can be avoided.

[0023] (2) The die castings with residual temperature are cooled and shaped by spraying water while being pressed tightly, and the products are output after being blown dry to ensure the dimensional accuracy of the products.

[0024] (3) The measurement reading assembly is placed across the measurement reference, so that multiple sets of data can be measured simultaneously.

[0025] (4) Use the measuring reading component to cross over the measuring reference to avoid using a handheld dial indicator to measure the deformation of the die casting one by one, and to avoid personnel being affected by the residual temperature of the die casting above the die casting.

[0026] (5) Both the support column and the support body can be in the form of adjustable length to adapt to the support on different planes of the die casting.

[0027] (6) The lower mold plate can adjust the height of the lower support rod through the pad so that it can adapt to the different heights of the lower surface of the die casting.

[0028] (7) The upper support rod adapts to the different heights of the upper surface of the die casting through the elasticity of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By describing the embodiments thereof in conjunction with the following drawings, the above-mentioned features and technical advantages of the present utility model will become clearer and easier to understand.

[0030] Figure 1 It is a schematic diagram of the automatic layout of die-casting production in an embodiment of the utility model;

[0031] Figure 2 is a three-dimensional schematic diagram of an orthopedic device according to an embodiment of the utility model;

[0032] Figure 3 It is a schematic diagram of thermal correction of a die casting according to an embodiment of the utility model;

[0033] Figure 4 It is a three-dimensional schematic diagram of a measuring device according to an embodiment of the utility model. DETAILED DESCRIPTION

[0034] The embodiments of the present invention will be described below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that the described embodiments may be modified in various ways or combinations thereof without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims. In addition, in this specification, the drawings are not drawn to scale and the same reference numerals represent the same parts.

[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. "Sliding connection" means that the two are connected to each other and can slide relative to each other after the connection. The directional terms mentioned in the embodiments of the present application, such as "upper" and "lower", are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0036] The present application provides a die-casting thermal correction device, including a correction device 400 arranged around a die-casting machine 100. When the temperature of the die-casting has not dropped significantly, the correction device is used to perform thermal correction, which can correct deformation greater than 5 mm and avoid the die-casting being fractured and damaged due to a large correction amount.

[0037] Please refer to Figure 1 to Figure 2 , Figure 1 It is a schematic diagram of the automatic layout of die-casting production in an embodiment of the utility model; Figure 2 It is a three-dimensional schematic diagram of a three-dimensional schematic diagram of an orthopedic device according to an embodiment of the utility model.

[0038] For example, the robot 500 is arranged on a track 600 and can move along the track 600. One end of the track 600 is the die casting machine 100, and the other end is the product output line 700. The slag removal device 200 and the orthopedic device 400 are arranged on both sides of the track 600. Figure 1 In the embodiment, a slag removal device 200 is arranged on one side, and a measuring device 300 and a correction device 400 are arranged on the other side.

[0039] Figure 1The circular track in is the rotary pick-up circumference of the robot 500 at the current position. Therefore, the robot 500 can remove the die-casting part that has been formed on the die-casting machine 100, and then place it at other positions according to process requirements.

[0040] The robot 500 extracts the die casting and places it in the slag removal device 200 to remove the slag and runner. The slag is on the outside of the die casting and is used to contain the oxide scale and slag that first enter the mold cavity. The runner is a channel for the molten metal to flow into the mold cavity. Usually, the runner connects the material handle with the product. The slag removal device 200 can be a hydraulic press, which can remove the slag and runner at one time.

[0041] In some embodiments, the orthopedic device 400 includes a support leg 401, a base plate 402, a lower mold plate 403, a coring column 405, an upper mold plate 407, a middle plate 408, and a hydraulic system 409. The hydraulic system drives the upper mold plate and the lower mold plate to buckle on both sides of the die-casting and apply a certain pressure, so as to correct the die-casting while it still has a certain amount of heat.

[0042] Exemplarily, the legs 401 may be multiple to support the entire orthopedic device. Figure 2 In the figure, four legs are used so that the orthopedic device 400 can stand upright, but the present application does not exclude the use of three legs or more legs. The upper end of the legs 401 is fixedly connected to a base plate 402, and the base plate 402 can be connected to the legs 401 by welding, riveting, bolting or integrally formed. The base plate 402 is used to install the lower template 403. The lower template 403 is horizontally fixedly connected to the upper end of the base plate 402. In order to be suitable for different heat correction of die castings, the connection between the lower template 403 and the base plate 402 can be disassembled, so as to facilitate the replacement of the corresponding lower template according to the specifications of the current product. On the base plate outside the four corners of the lower template 403, four Corinthian columns 405 extend vertically upward, and the lower ends of the Corinthian columns 405 can be fixedly connected to the upper end of the base plate 402.

[0043] The middle plate 408 has through holes at positions corresponding to the Corinthian columns 405, that is, the four corners of the middle plate 408 all have through holes, and the through holes of the middle plate 408 are sleeved on the corresponding Corinthian columns, so that the middle plate is slidably connected to the Corinthian columns.

[0044] The upper mold plate 407 is fixedly connected to the lower surface of the middle plate 408. The lower surface of the upper mold plate and the upper surface of the lower mold plate 403 are provided with support bodies with protruding surfaces, respectively, for supporting the upper and lower sides of the die casting. When the mold is closed, the support body can apply a certain pressure to the contact part of the die casting to correct the shape of the die casting.

[0045] The hydraulic system 409 may be fixedly connected to the upper end of the corinth column. The hydraulic system has a hydraulic output end, and the hydraulic output end is connected to the upper end of the middle plate 408. The hydraulic system 409 may include common hydraulic components such as a hydraulic pump, a hydraulic valve, and a hydraulic cylinder. The hydraulic cylinder serves as the hydraulic output end of the hydraulic system to apply pressure or tension to the middle plate 408. When pressure is applied to the middle plate 408, the middle plate 408 moves downward with the upper template 407 to close the mold with the lower template 403. The hydraulic system continues to apply pressure to the middle plate, so that the upper and lower templates apply orthopedic pressure to the die casting 800 for orthopedic treatment. When tension is applied to the middle plate 408, the middle plate 408 moves upward with the upper template 407, and the upper template is separated from the lower template.

[0046] It should be noted that the die casting may have multiple planes of different heights. Correspondingly, the support body can be divided into support bodies of different heights. After the upper and lower molds are closed, the die casting is clamped between the upper and lower molds, and the support bodies of different heights are supported on planes of different heights of the die casting. In this way, pressure can be applied to planes of different heights of the die casting, which can give direct pressure and ensure the thermal correction effect.

[0047] In some embodiments, the support body on the upper template is called the upper support rod 413, and the support body on the lower template is called the lower support rod 414. A mounting groove 4031 is provided on the top surface of the lower template 403, and the lower support rod 414 is vertically placed in the mounting groove 4031. To adjust its height, a pad 4032 can be placed at the bottom of the mounting groove 4031, and the lower support rod 414 is placed on the pad. The height of the lower support rod 414 is adjusted by pads of different thicknesses, so that it can be suitable for surfaces of different heights on the lower surface of the die casting. It should be noted that the same die casting can have a surface with the same height, or a surface with two or three heights, and the support thereof can be adapted by setting the corresponding pad thickness.

[0048] The upper support rod 413 includes a spring 4131, a retaining ring 4132, and a rod cap 4133. The upper support rod 413 passes through the upper template 407, and its rod cap 4133 remains at the upper end of the upper template 407, while the retaining ring 4132 is at the lower end of the upper template 407. The retaining ring 4132 can be fixedly connected to the support rod 413, for example, it can be integrally formed, or it can be connected by other fasteners. A spring 4131 is installed on the rod body between the retaining ring 4132 and the lower surface of the upper template 407, and the lower end of the upper support rod 413 is used to support the upper surface of the die casting. Since the spring 4131 has a certain elasticity, it can adapt to the different heights of the upper surface of the die casting. In some embodiments, such as Figure 3As shown, multiple water spray nozzles 420 and air spray nozzles 430 are provided on the upper template 407 and the lower template 403, which can spray water to cool the battery shell and blow away the moisture while maintaining the pressure on the battery shell.

[0049] The heat correction device can correct the die casting when the temperature exceeds 100°C, and can correct the deformation of the die casting of more than 5 mm. The robot 500 takes the die casting from the die casting machine and puts it into the heat correction device station. The hydraulic system drives the upper template to move down. The upper and lower templates press the upper and lower surfaces of the die casting respectively, and hold the pressure for 30 seconds. During the pressure holding, the water nozzle 420 sprays water to cool the die casting to 30°C. After the die casting is fixed, the air nozzle 430 blows it dry, and then the product is output through the product output line.

[0050] In some embodiments, the die casting thermal correction device further comprises a measuring device, such as Figure 4 As shown, the measuring device 300 includes a leveling foot 310 , a support platform 320 , a support column 330 , a measuring reference 340 , and a measuring reading assembly 350 .

[0051] The leveling foot 310 is supported at the four corners of the lower end of the support platform 320 and is used to level the measuring device 300. A screw is screwed on the lower end of the leveling foot 310, and the horizontality of the support platform 320 is adjusted by rotating the screw. A plurality of support columns 330 are provided at the upper end of the support platform 320. The support columns 330 are used to support the lower surface of the die casting. Support columns of different heights can be provided as needed to support the lower surface of the die casting at different heights.

[0052] The measurement reference is two horizontal slide rails arranged at intervals, which are arranged at both ends of the support platform. The upper end surface of the horizontal slide rails is parallel to the upper end surface of the support platform. The die casting to be measured is placed between the two horizontal slide rails. By adjusting the horizontal adjustment foot 310, the upper end surface of the support platform is adjusted to a horizontal state, and the upper end surface of the horizontal slide rail can be used as a measurement reference to place the measurement reading component 350.

[0053] The measuring reading assembly 350 includes a crossbar 351, a dial indicator 352, and a handle 353. The two ends of the crossbar 351 are used to be placed on the upper end surface of the horizontal slide rail. Multiple dial indicators 352 are fixedly connected to the crossbar 351 at intervals along the length direction of the crossbar, and their probes are downwardly facing to contact the upper surface of the die casting, so as to measure the deformation of the die casting. Since the measuring reading assembly is placed across the measuring reference, multiple dial indicators can measure multiple sets of data at the same time.

[0054] For example, handles 353 may be provided at both ends of the crossbar 351, one handle 353 is provided at one end, and the other handle 353 is provided at the other end. The handles may be manually held to facilitate picking up or putting down the crossbar 351. Since the die casting has residual heat, its heat dissipates upward. If a person manually holds a dial indicator to measure, it will inevitably be baked by the heat. However, by adopting the method of the present application, the handles held at both ends are located on the upper side of the die casting, which can reduce the influence of heat dissipation on the person.

[0055] When the deformation of the die casting needs to be measured, the horizontal degree of the support platform 320 is first adjusted by the horizontal adjustment foot 310. After the support platform is leveled, the upper end surface of the horizontal slide rail is also leveled. The die casting is placed on the support column 330 between the two horizontal slide rails, and the two ends of the measurement reading component 350 are placed on the upper end surface of the horizontal slide rail. The probe of the dial indicator contacts the corresponding part of the die casting, and the data of the dial indicator is recorded. The flatness and deformation trend of the die casting can be judged by measuring the data, and the downward pressure and holding time of the thermal correction device can be adjusted according to the deformation. The measurement reading component 350 can be pushed along the horizontal slide rail, or the measurement reading component 350 can be lifted and placed in another position for multiple measurements.

[0056] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A thermal correction device for die castings, characterized in that: Used for thermal correction of die castings with residual temperature after die casting, including: The correction device drives the upper and lower mold plates to buckle on the upper and lower surfaces of the die casting through the hydraulic system, thereby performing thermal correction on the die casting. An upper support rod is arranged on the upper template, and the upper support rod includes a spring, a retaining ring and a rod cap. The upper support rod passes through the upper template, and its rod cap is left at the upper end of the upper template, and the retaining ring is at the lower end of the upper template. The retaining ring is fixedly connected to the upper support rod, and a spring is installed on the upper support rod between the retaining ring and the lower surface of the upper template. The lower end of the upper support rod is used to support the upper surface of the die casting. A lower support rod is arranged on the lower template, a mounting groove is arranged on the top surface of the lower template, the lower support rod is vertically placed in the mounting groove, and the upper end of the lower support rod is used to support the lower surface of the die casting.

2. The die casting thermal correction equipment according to claim 1, characterized in that: The orthopedic device also includes a support leg, a base plate, a Corinthian column and a middle plate. The support leg is fixedly connected to the lower end of the base plate, the lower template is fixedly connected to the upper end of the base plate, and multiple Corinthian columns extend vertically upward from the base plate outside the four corners of the lower template. The middle plate is slidably connected to the Corinthian columns, and the upper template is fixedly connected to the lower surface of the middle plate. The hydraulic output end of the hydraulic system is connected to the upper end of the middle plate to drive the middle plate to slide along the Corinthian columns.

3. The die casting thermal correction equipment according to claim 2, characterized in that: The height of the lower support rod can be adjusted by placing pads of different thicknesses at the bottom of the mounting groove.

4. The die casting thermal correction equipment according to claim 1, characterized in that: It also includes a measuring device, which includes a supporting platform, a supporting column and a measuring reading component. The upper end of the supporting platform is provided with a plurality of supporting columns for supporting the lower surface of the die casting. The measuring reading component includes a cross bar and a dial indicator. A plurality of dial indicators are fixedly connected to the cross bar at intervals along the length direction of the cross bar, and the probes of the plurality of dial indicators face downward.

5. The die casting thermal correction equipment according to claim 4, characterized in that: It also includes a measuring reference, which is two horizontal slide rails set at intervals and arranged at both ends of the supporting platform. The upper end surfaces of the horizontal slide rails are parallel to the upper end surface of the supporting platform. The die casting to be measured is placed between the two horizontal slide rails, and the two ends of the cross bar of the measuring reading component are used to rest on the upper end surfaces of the horizontal slide rails.

6. The die casting thermal correction equipment according to claim 2, characterized in that: A plurality of water spray nozzles and air spray nozzles are arranged on the upper template and the lower template.

7. The die casting thermal correction equipment according to claim 5, characterized in that: The measuring device also includes a leveling foot, which is supported at the lower end of the supporting platform.

8. The die casting thermal correction equipment according to claim 5, characterized in that: Handles are also provided at both ends of the crossbar.

9. The die casting thermal correction equipment according to claim 1, characterized in that: It also includes a robot, which is arranged on a track, one end of which is a die-casting machine, and the other end of which is a product output line. A slag removal device, a measuring device and a correction device are distributed on both sides of the track.

10. The die casting thermal correction equipment according to claim 1, characterized in that: The residual temperature is greater than 100°C.

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