Intelligent control quick die changing device for low-pressure casting

Abstract

The invention discloses a low-pressure casting intelligent control rapid die changing device which comprises a trolley body, a first control module and a second control module. The trolley body is suitable for moving into a rack from an initial position in the horizontal direction, and a first stop position and a second stop position are arranged in the rack; the die filling platform is fixedly arranged on the upper surface of the trolley body and used for bearing a die, when die replacement is needed, after the trolley body moves to a second stop position, the movable die plate descends to be attached to the upper surface of the die, the die is clamped through a die clamping device arranged on the movable die plate, and die replacement is completed; the part receiving mechanism is arranged on the side, close to the rack, of the trolley body, a weight detection device is arranged in the part receiving mechanism, in the production process, after the trolley body moves to a first stop position in the direction of the rack, the product falls onto the part receiving mechanism, and the weight detection device detects the weight of the product; and the correcting mechanism is arranged in the piece receiving mechanism, and after the product falls onto the piece receiving mechanism, the correcting mechanism operates to correct the product to the center position.

Description

Technical Field

[0001] This application relates to the field of mold changing tools, and in particular discloses a low-pressure casting intelligent control rapid mold changing device. Background Technology

[0002] In modern injection molding or die casting production, the key to improving production efficiency lies in minimizing non-production time. Mold change is one of the most significant downtime events. Traditional mold change operations typically rely on overhead cranes to lift the molds, with manual guidance and alignment of the molds with tie rods, positioning rings, and other structures on the equipment. This process is cumbersome, time-consuming, and poses safety hazards, making it difficult to meet the requirements for rapid mold change. Simultaneously, quality inspection of molded products is crucial for ensuring production stability and product consistency. Traditionally, after demolding, products are manually removed and transported to a separate inspection station for weighing or inspection. This method is inefficient and increases labor intensity.

[0003] To solve the above problems, automation is needed. In the existing technology, mold transfer is achieved by using a mold loading trolley. However, its function is usually relatively simple, serving only as a moving carrier for the mold between the equipment and the storage area. When changing molds, the relative position of the trolley and the moving template of the equipment still needs to be repeatedly adjusted, resulting in low accuracy and efficiency. In addition, these trolleys generally lack the product weight detection function integrated into the production cycle, and the production and detection links are separated. Therefore, improvements are needed to enable them to have the functions of mold changing and product weight detection, and to be able to correct the position of the products that fall into the mold loading trolley, so as to facilitate subsequent automated loading. Summary of the Invention

[0004] The purpose of this application is to provide a low-pressure casting intelligent control quick mold changing device.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a low-pressure casting intelligent control rapid mold changing device, comprising: a trolley body, the trolley body being adapted to move horizontally from an initial position into a frame, the frame being provided with a first stop position and a second stop position; a mold loading platform, the mold loading platform being fixedly disposed on the upper surface of the trolley body, the mold loading platform being used to support the mold, and when mold changing is required, after the trolley body moves to the second stop position, the moving template on the frame descends to fit against the upper surface of the mold, and the mold is clamped by a mold clamping device disposed on the moving template. Complete the mold changing operation; A receiving mechanism is located on the side of the trolley body near the frame. A weight detection device is installed within the receiving mechanism. During production, when the trolley body moves towards the frame to the first stop position, the product falls onto the receiving mechanism. The weight detection device is suitable for detecting the weight of the product; A straightening mechanism is located within the receiving mechanism. When the product falls onto the receiving mechanism, the straightening mechanism operates, straightening the product to a centered position. When the trolley body returns to the initial position, the straightening mechanism resets.

[0006] As a preferred embodiment, the receiving mechanism includes a fixed plate, a receiving tray, and a buffer device. The fixed plate is fixed to the side of the trolley body near the frame, the receiving tray is disposed above the fixed plate, and the receiving tray is connected to the fixed plate through the buffer device. The buffer device is adapted to provide elastic support and absorb the impact generated when the product falls.

[0007] Further preferably, the buffer device includes a first fixed seat, a buffer spring, a spring support, and a first adjusting screw. The first fixed seat is fixed to the lower surface of the receiving tray, the spring support is fixed to the upper surface of the fixed plate, the first adjusting screw passes through the spring support and connects to the first fixed seat, and the buffer spring is sleeved on the first adjusting screw and located between the first fixed seat and the spring support. After the trolley body moves to the first stop position, the receiving tray is below the moving template. The product is pushed out from the moving template and falls into the receiving tray. Due to the impact of the product falling, the receiving tray generates vertical displacement and compresses the buffer spring. The buffer spring absorbs the impact by deforming, thus achieving buffering.

[0008] Preferably, the weight detection device is disposed between the receiving tray and the fixing plate. The weight detection device includes a second fixing seat, a second adjusting screw, and a gravity sensor. The second fixing seat is fixed at the center of the lower surface of the receiving tray. The second adjusting screw is threadedly installed on the lower side of the second fixing seat. The gravity sensor is fixed on the upper surface of the fixing plate and located directly below the second adjusting screw. When the product falls into the receiving tray, the receiving tray moves downward under the weight of the product, causing the second adjusting screw to move downward synchronously. The gravity sensor outputs the corresponding weight data by detecting the displacement of the second adjusting screw.

[0009] As a preferred embodiment, the mold mounting platform is provided with a plurality of positioning slots, and the positioning slots are suitable for installing positioning keys, and the mold is positioned and fixed at the center position of the mold mounting platform by the positioning keys.

[0010] As a preferred embodiment, a track is provided at the bottom of the frame, and the trolley body moves along the track. A first limit switch, a second limit switch, and a third limit switch are sequentially arranged on the track. The first limit switch marks the initial position of the trolley body, the second limit switch marks the deceleration position of the trolley body moving towards the frame during mold changing and also serves as the first stop position of the trolley body during production, and the third limit switch marks the second stop position of the trolley body. During production, the trolley body stops when it reaches the second limit switch, at which point the receiving mechanism is located directly below the moving template. When mold changing is required, when the trolley body is at the first limit switch, the mold is hoisted onto the mold mounting platform. When the trolley body passes the second limit switch, it decelerates and continues to move until it reaches the third limit switch and stops, at which point the mold mounting platform is located directly below the moving template.

[0011] Further preferably, a first limiter and a second limiter are respectively provided at both ends of the track. When the trolley body returns to the first limit switch, the first limiter restricts the trolley body from continuing to move. When the trolley body moves to the third limit switch, the second limiter restricts the trolley body from continuing to move.

[0012] As a preferred embodiment, the correction mechanism includes a drive assembly, a synchronous movement assembly, a guide plate, and several push plates. The guide plate is disposed within the receiving tray and is parallel to the bottom of the receiving tray. Several guide grooves are provided on the guide plate along the centripetal direction. The drive assembly and the synchronous movement assembly are both fixedly disposed at the bottom of the receiving tray and located below the guide plate. The upper end of the synchronous movement assembly passes through the guide groove and connects to the push plate. The drive assembly is adapted to control the operation of the synchronous movement assembly, thereby controlling the several push plates to move synchronously along the centripetal or centrifugal direction.

[0013] Further preferably, the synchronous movement component includes a plurality of moving units and a plurality of first connecting rods. The plurality of moving units are evenly arranged circumferentially around the center of the receiving tray. Each moving unit includes a first moving part, a second moving part, and a second connecting rod. Adjacent first moving parts are connected by the first connecting rods, and the second moving part is connected to the first moving part by the second connecting rods. The first moving part is disposed at the bottom of the receiving tray, and the second moving part is slidably connected to the guide groove. The driving component is connected to one of the first moving parts. When the driving component drives the first moving part to move, the remaining first moving parts move synchronously through the first connecting rods, and the second moving parts move synchronously along the guide groove through the second connecting rods.

[0014] Further preferably, the first moving part includes an arc-shaped slide rail and a first slider. The arc-shaped slide rails of a plurality of first moving parts are concentrically arranged. The first slider is slidably disposed on the arc-shaped slide rail. Two first connecting shafts are provided on the upper surface of the first slider. The two first connecting shafts are adapted to assemble a first connecting rod respectively, thereby realizing a linkage connection with the adjacent first slider. The driving component includes an electric push rod and a third connecting rod. The electric push rod is hinged to the third connecting rod. The third connecting rod is hinged to one of the first sliders. The linear reciprocating motion of the electric push rod drives the first slider to slide along the arc-shaped slide rail through the third connecting rod without causing motion interference.

[0015] More preferably, the second moving part includes a second slider and a second connecting shaft. The second connecting shaft is fixedly disposed on the lower surface of the second slider. A third connecting shaft is disposed on the first slider. The two ends of the second connecting rod are respectively connected to the second connecting shaft and the third connecting shaft. A protrusion is disposed on the side of the second slider so that it is engaged in the guide groove and slides in the guide groove by the push of the second connecting rod.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: (1) Achieve fast and accurate automated mold changing: This application sets a second stop position in the frame so that the trolley body can automatically run to the position and cooperate with the mold clamp to achieve automatic mold changing. No manual calibration is required throughout the process, avoiding the problem of repeated manual adjustment of alignment in the traditional mold changing process, greatly shortening the downtime required for mold changing and significantly improving production efficiency.

[0017] (2) Realize real-time weight detection: This application sets up a receiving mechanism on the trolley body and integrates a weight detection device in the receiving mechanism, which can automatically complete the weight detection immediately after the product is demolded, realize real-time monitoring of product weight, thereby screening out unqualified products at the first time, reducing the time of manual inspection and improving production efficiency.

[0018] (3) Automatically corrects product position, which facilitates subsequent automated production: This application sets up a correction mechanism in the receiving mechanism. This mechanism can automatically and quickly correct the product that falls into the receiving tray to the center position, which solves the problem of subsequent picking up caused by inconsistent product landing points. Without the need to set up a visual positioning device, subsequent robotic arms or other automated equipment can quickly and directly grab and transport products, thereby improving production efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the assembly state of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the assembly state of the present invention.

[0021] Figure 3 This is an exploded view of the three-dimensional structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the receiving mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the first and second stop positions of the present invention.

[0024] Figure 6 This is a schematic diagram of the clamping device of the present invention.

[0025] Figure 7 This is a schematic diagram of the moving template and clamping device of the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the correction mechanism of the present invention in its assembled state.

[0027] Figure 9 This is a schematic diagram of the internal structure of the correction mechanism of the present invention.

[0028] Figure 10 This is a schematic diagram of the internal structure of the correction mechanism of the present invention.

[0029] In the diagram: 1. Cart body; 2. Mold mounting platform; 21. Positioning slot; 3. Receiving mechanism; 31. Fixing plate; 32. Receiving tray; 33. Buffer device; 331. First fixed seat; 332. Buffer spring; 333. Spring support; 334. First adjusting screw; 4. Correction mechanism; 41. Drive assembly; 411. Electric push rod; 412. Third connecting rod; 42. Synchronous movement assembly; 421. Moving unit; 4211. First moving part; 42111. Arc-shaped slide rail; 42112. First slider; 42113. First connecting shaft; 42 114. Third connecting shaft; 4212. Second moving part; 42121. Second slider; 42122. Protrusion; 4213. Second connecting rod; 422. First connecting rod; 43. Guide plate; 431. Guide groove; 44. Push plate; 5. Weight detection device; 51. Second fixed seat; 52. Second adjusting screw; 53. Gravity sensor; 6. Frame; 61. Moving template; 62. Mold clamp; 63. Track; 64. First limit switch; 65. Second limit switch; 66. Third limit switch; 67. First limit switch; 68. Second limit switch. Detailed Implementation

[0030] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0032] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0033] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0034] A preferred embodiment of this application, such as Figures 1 to 10 As shown, a low-pressure casting intelligent control rapid mold changing device includes: a trolley body 1, which is adapted to move horizontally from an initial position into a frame 6, the frame 6 having a first stop position and a second stop position; a mold loading platform 2, which is fixedly mounted on the upper surface of the trolley body 1 and is used to support the mold. When mold changing is required, after the trolley body 1 moves to the second stop position, the moving template 61 on the frame 6 descends to fit against the upper surface of the mold, and the mold is clamped by the clamping device 62 on the moving template 61, completing the mold changing operation. No manual calibration is required throughout the process, avoiding the problem of repeated manual adjustment of alignment required in traditional mold changing processes, significantly shortening the downtime required for mold changing, and significantly improving production efficiency; and a receiving mechanism 3, which is located on the side of the trolley body 1 near the frame 6, and has a weight detection device 5 installed inside. During the process, when the trolley body 1 moves towards the frame 6 to the first stop position, the product falls onto the receiving mechanism 3. The weight detection device 5 is suitable for detecting the weight of the product. The weight detection device 5 is integrated into the receiving mechanism 3, which can automatically complete the weight detection immediately after the product is demolded, realizing real-time monitoring of the product weight, thereby screening out unqualified products in the first time, reducing the time for manual inspection and improving production efficiency. The correction mechanism 4 is set in the receiving mechanism 3. When the product falls onto the receiving mechanism 3, the correction mechanism 4 runs and corrects the product to the center position, solving the problem of subsequent part picking caused by inconsistent product landing points. Without the need to set up a visual positioning device, the subsequent robot or other automated equipment can quickly and directly grab and transport the product, thereby improving production efficiency. When the trolley body 1 returns to the initial position, the correction mechanism 4 resets.

[0035] In this embodiment, the receiving mechanism 3 includes a fixed plate 31, a receiving tray 32, and a buffer device 33. The fixed plate 31 is fixed on the side of the trolley body 1 near the frame 6. The receiving tray 32 is disposed above the fixed plate 31. The receiving tray 32 and the fixed plate 31 are connected by the buffer device 33. The buffer device 33 is adapted to provide elastic support and absorb the impact generated when the product falls.

[0036] The receiving mechanism 3 of this application is not a conventional receiving tray 32. It is equipped with a buffer device 33, which allows the receiving tray 32 to float up and down, so as to flexibly receive the product. This can effectively reduce the impact when the product falls on the receiving tray 32, avoid damage to the product and the receiving tray 32, and thus improve production quality and equipment life.

[0037] To cushion the product, in this embodiment, the cushioning device 33 specifically includes a first fixed seat 331, a cushioning spring 332, a spring support 333, and a first adjusting screw 334. The first fixed seat 331 is fixed to the lower surface of the receiving tray 32, the spring support 333 is fixed to the upper surface of the fixed plate 31, and the first adjusting screw 334 passes through the spring support 333 and connects to the first fixed seat 331. The cushioning spring 332 is sleeved on the first adjusting screw 334 and located between the first fixed seat 331 and the spring support 333. After the trolley body 1 moves to the first stop position, the receiving tray 32 is below the moving template 61. The product is pushed out from the moving template 61 and falls into the receiving tray 32. Due to the impact of the product falling, the receiving tray 32 undergoes vertical displacement and compresses the cushioning spring 332. The cushioning spring 332 absorbs the impact by deforming, thus achieving cushioning.

[0038] The buffering capacity of the receiving mechanism 3 can be adjusted according to different products. The distance between the fixed plate 31 and the receiving tray 32 can be adjusted by the first adjusting screw 334, and the compression of the buffer spring 332 is also adjusted simultaneously. In this way, different products can be matched with different buffering distances to achieve effective buffering for products of multiple specifications.

[0039] To achieve immediate weighing upon demolding, this embodiment integrates a weight detection device 5. The weight detection device 5 is positioned between the receiving tray 32 and the fixing plate 31. The weight detection device 5 includes a second fixing seat 51, a second adjusting screw 52, ​​and a gravity sensor 53. The second fixing seat 51 is fixed at the center of the lower surface of the receiving tray 32. The second adjusting screw 52 is threadedly installed on the lower side of the second fixing seat 51. The gravity sensor 53 is fixed on the upper surface of the fixing plate 31 and located directly below the second adjusting screw 52. When the product falls into the receiving tray 32, the receiving tray 32 moves downward under the weight of the product, causing the second adjusting screw 52 to move downward synchronously. The gravity sensor 53 outputs the corresponding weight data by detecting the displacement of the second adjusting screw 52.

[0040] Of course, when producing different products, the displacement of the second adjusting screw 52 will also change due to the different weights of the products. Therefore, the quality detection of different products can be adapted by adjusting the gap between the lower end of the second adjusting screw 52 and the gravity sensor 53.

[0041] In this embodiment, the mold mounting platform 2 is provided with a plurality of positioning slots 21, and the positioning slots 21 are suitable for installing positioning keys. The mold is positioned and fixed at the center position of the mold mounting platform 2 by the positioning keys.

[0042] In this embodiment, a track 63 is provided at the bottom of the frame 6, and the trolley body 1 moves along the track 63. A first limit switch 64, a second limit switch 65, and a third limit switch 66 are sequentially arranged on the track 63. The first limit switch 64 marks the initial position of the trolley body 1, the second limit switch 65 marks the deceleration position of the trolley body 1 moving towards the frame 6 during the mold changing process, and also serves as the first stop position of the trolley body 1 during production. The third limit switch 66 marks the second stop position of the trolley body 1. During production, the trolley body 1 stops when it moves to the second limit switch 65. At this time, the receiving mechanism 3 is in the moving position. Directly below template 61; when mold changing is required, when the trolley body 1 is at the first limit switch 64, the mold is hoisted onto the mold mounting platform 2. When the trolley body 1 passes the second limit switch 65, it decelerates and continues to move until it stops at the third limit switch 66. At this time, the mold mounting platform 2 is directly below the moving template 61. The two ends of the track 63 are also respectively equipped with a first limiter 67 and a second limiter 68. When the trolley body 1 returns to the first limit switch 64, the first limiter 67 restricts the trolley body 1 from continuing to move. When the trolley body 1 moves to the third limit switch 66, the second limiter 68 restricts the trolley body 1 from continuing to move.

[0043] More specifically, during mold changing, at the initial position of the trolley body 1, the first limit switch 67 restricts the movement of the trolley body 1, and the first limit switch 64 detects the position of the trolley body 1. Then, the mold is hoisted onto the trolley body 1, and the mold is positioned and fixed at the center of the mold mounting platform 2 by several positioning keys. After the mold is fixed, the trolley body 1 is controlled to move towards the frame 6 at a first speed. When the trolley body 1 touches the second limit switch 65, the second limit switch 65 provides feedback on the trolley position, and simultaneously, the PLC controls the trolley body 1 to continue moving to the right at a second speed. At this second speed is less than the first speed. This avoids the trolley body 1 failing to accurately stop at the second stop position due to excessive speed and avoids impacting the second limit switch 68. When the trolley body 1 encounters the third limit switch 66, the third limit switch 66 sends a feedback signal to the PLC. At this time, the trolley body 1 reaches the second stop position and stops moving. The second stop position prevents the trolley body 1 from continuing to move to the right under inertia. After the trolley body 1 stops, the moving template 61 descends and fits against the upper surface of the mold. The mold clamp 62 clamps the mold, and then the moving template 61 rises, and the trolley body 1 returns to its initial position, completing the mold changing process. Through the above settings, this application solves the problems of inaccurate positioning during manual mold hoisting, difficulty in operation when the mold is heavy, and high risk, greatly improving the efficiency of mold changing.

[0044] Because the position of the product deviates each time it detaches from the driven template 61 and falls into the receiving tray 32, it cannot be guaranteed that the product will be in the same position on the receiving tray 32. This will make it difficult for the robot to automatically grasp the product. Conventionally, a visual recognition device needs to be set up to identify the specific position and direction of the product in the receiving tray 32, and then the angle of the robot is adjusted to achieve precise grasping. However, this method requires setting up an additional visual recognition device, which increases the cost of the equipment. In addition, the recognition time and robot adjustment time will also be generated in the entire production process, which will greatly affect the production efficiency. Therefore, in order to improve efficiency and reduce costs, the product can be corrected by the correction mechanism 4 after it falls into the receiving tray 32. Then the robot can directly grasp the product without adjusting the angle.

[0045] This embodiment provides a specific configuration of the correction mechanism 4, which includes a drive assembly 41, a synchronous movement assembly 42, a guide plate 43, and several push plates 44. The guide plate 43 is disposed inside the receiving tray 32 and is parallel to the bottom of the receiving tray 32. Several guide grooves 431 are provided on the guide plate 43 along the centripetal direction. The drive assembly 41 and the synchronous movement assembly 42 are both fixedly disposed at the bottom of the receiving tray 32 and located below the guide plate 43. The upper end of the synchronous movement assembly 42 passes through the guide grooves 431 and is connected to the push plates 44. The drive assembly 41 is adapted to control the operation of the synchronous movement assembly 42, thereby controlling the several push plates 44 to move synchronously along the centripetal or centrifugal direction.

[0046] To achieve this at a lower cost, this embodiment employs a synchronous movement component 42, where a single drive source drives all mechanisms to operate synchronously. In the above structure, a single drive component 41 enables the synchronous movement of several push plates 44, thereby ensuring consistency in product position correction. The synchronous movement component 42 can be specifically configured as follows: it includes several moving units 421 and several first connecting rods 422. The moving units 421 are evenly arranged circumferentially around the center of the receiving tray 32. Each moving unit 421 includes a first moving part 4211, a second moving part 4212, and a second connecting rod 4213. Adjacent first moving parts 4211 are connected by a first connecting rod 422. The second moving part 4212 is connected to the first moving part 4211 by a second connecting rod 4213. The first moving part 4211 is located at the bottom of the receiving tray 32. The second moving part 4212 is slidably connected to the guide groove 431. The drive assembly 41 is connected to one of the first moving parts 4211. When the drive assembly 41 drives the first moving part 4211 to move, the other first moving parts 4211 move synchronously through the first connecting rod 422. At the same time, the second moving part 4212 is pushed to move synchronously along the guide groove 431 through the second connecting rod 4213.

[0047] The first moving part 4211 includes an arc-shaped slide rail 42111 and a first slider 42112. Several arc-shaped slide rails 42111 of the first moving parts 4211 are concentrically arranged. The first slider 42112 is slidably disposed on the arc-shaped slide rail 42111. Two first connecting shafts 42113 are provided on the upper surface of the first slider 42112. The two first connecting shafts 42113 are adapted to respectively assemble a first connecting rod 422, thereby achieving a linkage connection with adjacent first sliders 42112. The driving assembly 41 includes an electric push rod 411 and a third connecting rod 412. The electric push rod 411 is hinged to the third connecting rod 412, and the third connecting rod 412 is connected to one of the first sliders 421. 12. The linear reciprocating motion of the electric push rod 411 drives the first slider 42112 to slide along the arc-shaped slide rail 42111 through the third connecting rod 412 without causing motion interference; the second moving part 4212 includes a second slider 42121 and a second connecting shaft. The second connecting shaft is fixedly set on the lower surface of the second slider 42121. The first slider 42112 is provided with a third connecting shaft 42114. The two ends of the second connecting rod 4213 are respectively connected to the second connecting shaft and the third connecting shaft 42114. The side of the second slider 42121 is provided with a protrusion 42122 so that it is locked on the guide groove 431 and slides on the guide groove 431 by the push of the second connecting rod 4213.

[0048] The slide rail slider mechanism has a clear and unique path. Multiple slide rail slider mechanisms can be linked together through several connecting rods. The structure is simple, the cost is low, and the movement is reliable. Multiple components can be moved synchronously through a single drive source. Setting the above structure in the receiving tray 32 can achieve the accuracy and consistency of product position correction under the premise of low cost.

[0049] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A low-pressure casting intelligent control rapid mold changing device, characterized in that, include: A trolley body, adapted to move horizontally from an initial position into a frame, the frame having a first stop position and a second stop position; a mold loading platform, fixedly mounted on the upper surface of the trolley body, used to support the mold; when mold changing is required, after the trolley body moves to the second stop position, the moving template on the frame descends to fit against the upper surface of the mold, and the mold is clamped by a clamping device on the moving template, completing the mold changing operation; a receiving mechanism, located on the side of the trolley body near the frame, equipped with a weight detection device; during production, after the trolley body moves towards the frame to the first stop position, the product falls onto the receiving mechanism, the weight detection device being adapted to detect the weight of the product; and a straightening mechanism, located within the receiving mechanism; after the product falls onto the receiving mechanism, the straightening mechanism operates, straightening the product to a centered position; when the trolley body returns to the initial position, the straightening mechanism resets.

2. The intelligent control rapid mold changing device for low-pressure casting as described in claim 1, characterized in that, The receiving mechanism includes a fixed plate, a receiving tray, and a buffer device. The fixed plate is fixed to the side of the trolley body near the frame. The receiving tray is disposed above the fixed plate. The receiving tray and the fixed plate are connected by the buffer device. The buffer device is adapted to provide elastic support and absorb the impact generated when the product falls.

3. The intelligent control rapid mold changing device for low-pressure casting as described in claim 2, characterized in that, The buffer device includes a first fixed seat, a buffer spring, a spring support, and a first adjusting screw. The first fixed seat is fixed to the lower surface of the receiving tray, and the spring support is fixed to the upper surface of the fixed plate. The first adjusting screw passes through the spring support and connects to the first fixed seat. The buffer spring is sleeved on the first adjusting screw and located between the first fixed seat and the spring support. After the trolley body moves to the first stop position, the receiving tray is below the moving template. The product is pushed out from the moving template and falls into the receiving tray. Due to the impact of the product falling, the receiving tray undergoes vertical displacement and compresses the buffer spring. The buffer spring absorbs the impact by deforming, thus achieving buffering.

4. The intelligent control rapid mold changing device for low-pressure casting as described in claim 2, characterized in that, The weight detection device is disposed between the receiving tray and the fixing plate. The weight detection device includes a second fixing seat, a second adjusting screw, and a gravity sensor. The second fixing seat is fixed at the center of the lower surface of the receiving tray. The second adjusting screw is threadedly installed on the lower side of the second fixing seat. The gravity sensor is fixed on the upper surface of the fixing plate and located directly below the second adjusting screw. When the product falls into the receiving tray, the receiving tray moves downward under the weight of the product, causing the second adjusting screw to move downward synchronously. The gravity sensor outputs the corresponding weight data by detecting the displacement of the second adjusting screw.

5. The intelligent control and rapid mold changing device for low-pressure casting as described in claim 1, characterized in that, The mold mounting platform is provided with several positioning slots, and the positioning slots are suitable for installing positioning keys. The mold is positioned and fixed at the center position of the mold mounting platform by the positioning keys.

6. The intelligent control rapid mold changing device for low-pressure casting as described in claim 1, characterized in that, The bottom of the frame is provided with a track, and the trolley body moves along the track. A first limit switch, a second limit switch, and a third limit switch are sequentially arranged on the track. The first limit switch marks the initial position of the trolley body, the second limit switch marks the deceleration position of the trolley body moving towards the frame during mold changing, and also serves as the first stop position of the trolley body during production. The third limit switch marks the second stop position of the trolley body. During production, the trolley body stops when it reaches the second limit switch, at which point the receiving mechanism is located directly below the moving template. When mold changing is required, when the trolley body is at the first limit switch, the mold is hoisted onto the mold mounting platform. When the trolley body passes the second limit switch, it decelerates and continues to move until it reaches the third limit switch and stops, at which point the mold mounting platform is located directly below the moving template.

7. The intelligent control rapid mold changing device for low-pressure casting as described in claim 6, characterized in that, The track is also equipped with a first limiter and a second limiter at each end. When the trolley body returns to the first limit switch, the first limiter restricts the trolley body from continuing to move. When the trolley body moves to the third limit switch, the second limiter restricts the trolley body from continuing to move.

8. The intelligent control rapid mold changing device for low-pressure casting as described in claim 2, characterized in that, The correction mechanism includes a drive assembly, a synchronous movement assembly, a guide plate, and several push plates. The guide plate is disposed inside the receiving tray and is parallel to the bottom of the receiving tray. Several guide grooves are provided on the guide plate along the centripetal direction. The drive assembly and the synchronous movement assembly are both fixedly disposed at the bottom of the receiving tray and located below the guide plate. The upper end of the synchronous movement assembly passes through the guide groove and connects to the push plate. The drive assembly is adapted to control the operation of the synchronous movement assembly, thereby controlling the several push plates to move synchronously along the centripetal or centrifugal direction.

9. A low-pressure casting intelligent control rapid mold changing device as described in claim 8, characterized in that, The synchronous movement component includes several moving units and several first connecting rods. The moving units are evenly arranged around the center of the receiving tray. Each moving unit includes a first moving part, a second moving part, and a second connecting rod. Adjacent first moving parts are connected by the first connecting rods. The second moving part is connected to the first moving part by the second connecting rod. The first moving part is located at the bottom of the receiving tray. The second moving part is slidably connected to the guide groove. The drive component is connected to one of the first moving parts. When the drive component drives the first moving part to move, it drives the remaining first moving parts to move synchronously through the first connecting rods. At the same time, it pushes the second moving part to move synchronously along the guide groove through the second connecting rods.

10. A low-pressure casting intelligent control rapid mold changing device as described in claim 9, characterized in that, The first moving part includes an arc-shaped slide rail and a first slider. Several arc-shaped slide rails of the first moving parts are concentrically arranged. The first slider is slidably mounted on the arc-shaped slide rail. Two first connecting shafts are provided on the upper surface of the first slider. Each of the two first connecting shafts is adapted to assemble a first connecting rod, thereby achieving a linkage connection with an adjacent first slider. The driving assembly includes an electric push rod and a third connecting rod. The electric push rod is hinged to the third connecting rod, and the third connecting rod is hinged to one of the first sliders. The linear reciprocating motion of the electric push rod drives the first slider to slide along the arc-shaped slide rail through the third connecting rod without causing motion interference. The second moving part includes a second slider and a second connecting shaft. The second connecting shaft is fixedly mounted on the lower surface of the second slider. The first slider is provided with a third connecting shaft. The two ends of the second connecting rod are respectively connected to the second connecting shaft and the third connecting shaft. A protrusion is provided on the side of the second slider to engage with the guide groove and slide on the guide groove by the push of the second connecting rod.

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