Die casting device for bus duct production

Abstract

The invention relates to the technical field of bus duct production, in particular to a die-casting device for bus duct production, which comprises a workbench, a base plate is fixed at the top of the workbench, an opening is formed in the top of the base plate in a penetrating manner, and a lower die is fixedly connected to the top of the base plate; a plurality of arc-shaped grooves are formed in the top of the lower mold at equal intervals in the length direction of the lower mold, and a rectangular groove is formed in the bottom of the lower mold; the single servo motor is matched with the belt wheels and belt transmission, the size difference of the two belt wheels is reasonably set, synchronous driving of roller rotation and intermittent ejection unit movement is achieved, the number of power sources is reduced through the single servo motor, the equipment manufacturing cost, maintenance difficulty and energy consumption are greatly reduced, a finished product can be automatically ejected out after die casting is completed, and the production efficiency is improved. And the problems of finished product clamping, surface scratching and the like are avoided, and the product percent of pass and the production continuity are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of busbar trunking production technology, specifically to a die-casting apparatus for busbar trunking production. Background Technology

[0002] Busbar trunking is a closed metal device composed of copper or aluminum busbar columns, used to distribute large amounts of power to various components in a distributed system. It is increasingly replacing electrical wires and cables in indoor low-voltage power transmission trunk line projects. The production and processing of busbar trunking requires stamping equipment to form the metal sheet raw material. Existing busbar trunking die-casting equipment mainly includes a frame, upper and lower molds, feeding, ejecting, and unloading mechanisms. The workflow is feeding, mold closing and forming, ejecting, and unloading. Currently, the industry has higher requirements for automation, efficiency, material utilization, and product strength in equipment; however, existing equipment has many shortcomings, specifically as follows: Existing die-casting molds for busbar trunking typically feature flat cavities, resulting in a smooth surface for the busbar trunking after stamping. To ensure the structural strength of the busbar trunking shell, thicker metal plates are required as die-casting raw materials, leading to increased material consumption, higher production costs, and low material utilization. Conversely, reducing the plate thickness to save materials results in insufficient strength of the busbar trunking shell, making it prone to deformation and damage during subsequent installation, transportation, and use, thus failing to meet actual usage requirements. Therefore, a die-casting device for busbar trunking production is needed to address these issues. Summary of the Invention

[0003] To address the problem of unreasonable mold structure design and the inability to balance material utilization and product strength, this invention provides a die-casting device for busbar trunking production, thereby solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A die-casting device for producing busbar trunking includes a workbench. A pad is fixed to the top of the workbench, and an opening is formed through the top of the pad. A lower mold is fixedly connected to the top of the pad. Several arc-shaped grooves are equidistantly formed along the length of the top of the lower mold. A rectangular groove is formed at the bottom of the lower mold. A movable groove connecting the rectangular groove is formed between two adjacent arc-shaped grooves on the top of the lower mold. The pad and the movable groove are connected to form an installation groove. A receiving groove is also formed on the top of the lower mold, and a limit unit is provided in the receiving groove.

[0005] A lifting unit is fixed to the top of the workbench, and an upper mold is fixedly connected to the moving end of the lifting unit. Several arc-shaped protrusions are equidistantly provided on the bottom of the upper mold along its length.

[0006] A feeding unit is provided at one end of the workbench, and a roller conveyor is provided at the other end. An extension rod is fixedly connected to the rotating roller of the roller conveyor near the feeding unit. A top material unit is provided in the mounting groove, and the top material unit is drivenly connected to the extension rod.

[0007] As a preferred embodiment of the present invention, the lifting unit includes a mounting frame fixed to the top of the workbench, a through hole is provided at the center of the top of the mounting frame, and round holes are provided at both ends of the top of the mounting frame.

[0008] As a preferred embodiment of the present invention, a hydraulic telescopic rod is fixedly connected to the top of the mounting frame, and a connecting plate is fixedly connected to the moving end of the hydraulic telescopic rod after passing through the through hole. A pressure plate is fixedly connected to the bottom of the connecting plate, and an upper mold is fixedly connected to the bottom of the pressure plate.

[0009] As a preferred embodiment of the present invention, four telescopic rods are fixed in a rectangular array at the bottom of the connecting plate. The thinner end of each telescopic rod is fixed to the top of the pad, and a spring is sleeved on the outer wall of the thinner end of each telescopic rod. The two ends of the spring abut against the top of the pad and the thicker end of the telescopic rod, respectively.

[0010] As a preferred embodiment of the present invention, a guide rod is fitted inside the circular hole with a clearance, and the bottom of the guide rod passes through the circular hole and is fixed to the top of the connecting plate.

[0011] As a preferred embodiment of the present invention, the feeding unit includes a storage shell with a receiving slot fixed to the top of the workbench. One side of the storage shell has a discharge port communicating with the receiving slot, and the other side has two sliding slots communicating with the receiving slot. Two sliding rods are fixed to the bottom of the workbench, and a connecting frame slides on both sliding rods. A cylinder is horizontally fixed to the bottom of the workbench, and the moving end of the cylinder is fixedly connected to the connecting frame. A feeding frame is fixedly connected to the top of the connecting frame. The feeding frame can pass through the sliding slot, and both ends of the feeding frame are integrally formed with protruding rods for feeding.

[0012] As a preferred embodiment of the present invention, two movable slots are provided on the worktable, and the connecting frame is slidably engaged in the movable slots.

[0013] As a preferred embodiment of the present invention, the limiting unit includes a U-shaped block that can slide up and down in the receiving groove. The top two ends of the U-shaped block are rotatably connected to a rotating shaft. The bottom of the U-shaped block is provided with mounting holes at equal intervals along its length. A compression spring is vertically fixedly connected in the mounting hole, and the bottom of the compression spring is fixedly connected inside the receiving groove.

[0014] As a preferred embodiment of the present invention, the top material unit includes Z-shaped rotating rods arranged in a rectangular array and rotatably installed on the inner wall of the mounting groove. One end of each of the four Z-shaped rotating rods is rotatably connected to a support plate. Two rows of top material rods are fixedly attached to the top of the support plate along its length. Rubber suction cups are fixedly connected to the top of each top material rod. A servo motor is fixedly connected to one end of the top of the worktable. The output shaft of the servo motor passes through the mounting groove and is fixedly connected to one of the Z-shaped rotating rods. A belt is sleeved on the output shaft of the servo motor, and the other end of the belt is sleeved on an extension rod.

[0015] As a preferred embodiment of the present invention, a support block is fixedly connected to the top of the workbench, and one end of the extension rod rotates on the support block.

[0016] Compared with existing technologies, this invention achieves synchronous drive of roller rotation and intermittent ejection unit movement by using a single servo motor in conjunction with pulleys and belt drive, and by reasonably setting the size difference between the two pulleys. The single servo motor reduces the number of power sources, significantly reducing equipment manufacturing costs, maintenance difficulty and energy consumption. After die casting is completed, the finished product can be automatically ejected and smoothly fed into the roller, avoiding problems such as finished product jamming and surface scratches, and significantly improving product qualification rate and production continuity.

[0017] Compared with the prior art, the limiting unit designed in this invention can accurately limit the die-casting raw material during the feeding stage, ensuring the positioning accuracy of the raw material, avoiding feeding deviation, and improving the consistency of the busbar forming size. During the ejection and unloading stage, the limiting unit can play a stable supporting role for the ejected finished product, guiding the finished product to smoothly transition to the roller, reducing the loss caused by product tilting and deviation, eliminating the need for manual correction, further improving the automation level of the equipment, and reducing the intensity of manual labor.

[0018] Compared with the prior art, the present invention optimizes the upper and lower mold structure so that the busbar trunking after stamping forms an arc-shaped protrusion. The arc-shaped protrusion can significantly improve the structural strength of the busbar trunking shell without increasing the thickness of the metal sheet, avoiding deformation and damage during subsequent installation, transportation and use; at the same time, it reduces the amount of die-casting raw materials used, improves material utilization and reduces production costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the feeding unit of the present invention; Figure 3 This is a schematic diagram of the feeding rack structure of the present invention; Figure 4 This is a schematic diagram of the top structure of the lower mold of the present invention; Figure 5This is a schematic diagram of the bottom structure of the lower mold of the present invention; Figure 6 This is a schematic diagram of the assembly structure of the limiting unit of the present invention; Figure 7 This is a schematic diagram of the upper mold structure of the present invention; Figure 8 This is a schematic diagram of the assembly structure of the top feeding unit of the present invention; Figure 9 This is a schematic diagram of the lifting unit structure of the present invention; Figure 10 This is a schematic diagram of the top material unit structure of the present invention; In the diagram: 1. Workbench; 11. Pad; 111. Opening; 12. Moving slot; 2. Lower mold; 21. Arc-shaped groove; 22. Rectangular slot; 23. Movable slot; 24. Mounting slot; 25. Receiving slot; 3. Lifting unit; 31. Mounting bracket; 32. Hydraulic telescopic rod; 33. Connecting plate; 34. Pressure plate; 35. Telescopic rod; 36. Spring; 37. Guide rod; 4. Upper mold; 41. Arc-shaped protrusion; 5. Feeding unit; 1. Storage shell; 511. Discharge port; 512. Sliding chute; 52. Sliding rod; 53. Connecting frame; 54. Cylinder; 55. Feeding frame; 551. Protruding rod; 6. Limiting unit; 61. U-shaped block; 62. Rotating shaft; 63. Compression spring; 7. Roller conveyor; 71. Extension rod; 8. Top material unit; 81. Z-shaped rotating rod; 82. Pallet; 83. Top material rod; 84. Rubber suction cup; 85. Servo motor; 86. Belt. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Example: Please refer to Figure 1-10 The die-casting device for busbar trunking production shown includes a workbench 1. A pad 11 is fixed on the top of the workbench 1. An opening 111 is opened through the top of the pad 11. A lower mold 2 is fixedly connected to the top of the pad 11. Several arc-shaped grooves 21 are equidistantly opened on the top of the lower mold 2 along its length. A rectangular groove 22 is opened on the bottom of the lower mold 2. A movable groove 23 connecting the rectangular groove 22 is opened on the top of the lower mold 2 between two adjacent arc-shaped grooves 21. The pad 11 and the movable groove 23 are connected to form an installation groove 24. A receiving groove 25 is also opened on the top of the lower mold 2. A limit unit 6 is provided in the receiving groove 25.

[0022] Specifically: The workbench 1, as the basic support component of the entire device, is made of welded steel and has leveling feet at the bottom to adjust the level according to the installation environment, so as to avoid shaking during the die casting process and affect the molding accuracy. The top of the workbench 1 is fixedly connected to the pad plate 11 by bolts. The pad plate 11 is made of wear-resistant cast iron and is used to support the lower mold 2 and disperse the impact force during the die casting process to prevent the workbench 1 from deforming under the force. The top of the pad plate 11 has an opening 111 through it. The size of the opening 111 is adapted to the rectangular groove 22 at the bottom of the lower mold 2 to ensure that the components of the ejector unit 8 can smoothly perform periodic swinging motion to realize the ejector action.

[0023] Specifically: The lower mold 2 is double-fixed to the top of the pad 11 by positioning pins and bolts. The lower mold 2 is made of hot-work die steel, which is resistant to high temperature and wear. Several arc-shaped grooves 21 are equidistantly opened on its top along the length direction. The curvature and size of the arc-shaped grooves 21 match the arc-shaped protrusions required for the outer shell of the busbar trunking. There is a uniform spacing between adjacent arc-shaped grooves 21 for forming the main structure of the busbar trunking. A rectangular groove 22 is opened at the bottom of the lower mold 2. The rectangular groove 22 runs through the length direction of the lower mold 2, providing space for the installation and movement of the top material unit 8. The top of the lower mold 2 is located between two adjacent arc-shaped grooves 21 and has a movable groove 23 that connects to the rectangular groove 22. Several sets of movable grooves 23 are provided, corresponding one to one with the arc-shaped grooves 21. The opening 111 of the pad 11 is connected to the movable groove 23 and the rectangular groove 22 to form the mounting groove 24. The internal dimensions of the mounting groove 24 are adapted to the overall structure of the top material unit 8 to ensure that the top material unit 8 can move flexibly in the groove without interference.

[0024] A lifting unit 3 is fixed on the top of the workbench 1. The moving end of the lifting unit 3 is fixedly connected to the upper mold 4. Several arc-shaped protrusions 41 are equidistantly provided on the bottom of the upper mold 4 along its length.

[0025] A feeding unit 5 is provided at one end of the workbench 1, and a roller conveyor 7 is provided at the other end. An extension rod 71 is fixedly connected to the rotating roller of the roller conveyor 7 near the feeding unit 5. A top material unit 8 is provided in the mounting groove 24, and the top material unit 8 is connected to the extension rod 71 in a transmission connection.

[0026] Specifically: Roller conveyor 7 is used to transport the finished busbar trough after die casting to the next processing step. It is set at the end of the workbench 1 away from the feeding unit 5. Its conveying direction is consistent with the feeding direction of the feeding unit 5. The top height of roller conveyor 7 is adapted to the maximum height of the lower mold 2 after ejection, ensuring that the finished product can be smoothly transferred from the lower mold 2 to the roller conveyor 7. Roller conveyor 7 includes several rotating rollers. The rotating rollers are made of stainless steel with a smooth surface to avoid scratching the surface of the finished product. An extension rod 71 is fixedly connected to the rotating roller near the feeding unit 5 by a key. The extension rod 71 is made of round steel and is set coaxially with the rotating roller. It is used to drive the connection with the ejector unit 8 to transmit power.

[0027] In this embodiment, the lifting unit 3 includes a mounting bracket 31 fixed to the top of the workbench 1. A through hole is provided at the center of the top of the mounting bracket 31, and round holes are provided at both ends of the top of the mounting bracket 31.

[0028] In this embodiment, a hydraulic telescopic rod 32 is fixedly connected to the top of the mounting bracket 31. The moving end of the hydraulic telescopic rod 32 passes through the through hole and is fixedly connected to a connecting plate 33. A pressure plate 34 is fixedly connected to the bottom of the connecting plate 33, and an upper mold 4 is fixedly connected to the bottom of the pressure plate 34.

[0029] Specifically: The hydraulic telescopic rod 32 is a high-pressure type hydraulic rod, whose rated pressure is adapted to the mold closing pressure required for busbar die casting. After the moving end of the hydraulic telescopic rod 32 passes through the through hole, it is fixedly connected to the connecting plate 33 through a flange. The connecting plate 33 is made of steel plate and has a rectangular structure. Its size matches the top size of the upper mold 4. It is used to connect the hydraulic telescopic rod 32 and the pressure plate 34 and to distribute the driving force of the hydraulic telescopic rod 32. The bottom of the connecting plate 33 is fixedly connected to the pressure plate 34 by bolts. The pressure plate 34 is made of wear-resistant steel plate. The bottom is tightly fitted and fixed to the top of the upper mold 4. The setting of the pressure plate 34 can avoid the upper mold 4 from being deformed due to uneven force, thus extending the service life of the upper mold 4. The upper mold 4 is made of the same hot work die steel as the lower mold 2. Several arc-shaped protrusions 41 are equidistantly provided on the bottom along the length direction. The arc-shaped protrusions 41 correspond one-to-one with the arc-shaped grooves 21 of the lower mold 2 and are size-matched. When the mold is closed, the arc-shaped protrusions 41 are embedded in the arc-shaped grooves 21, so that the outer shell of the busbar groove is formed into an arc-shaped protrusion, which takes into account both strength and material saving.

[0030] In this embodiment, four telescopic rods 35 are fixed in a rectangular array at the bottom of the connecting plate 33. The thin end of the telescopic rod 35 is fixed to the top of the pad plate 11. A spring 36 is sleeved on the outer wall of the thin end of the telescopic rod 35. The two ends of the spring 36 abut against the top of the pad plate 11 and the thick end of the telescopic rod 35, respectively.

[0031] Specifically: The telescopic rod 35 adopts a telescopic guide structure, with its thick end fixed to the bottom of the connecting plate 33 and its thin end fixed to the top of the pad 11. The axis of the telescopic rod 35 is parallel to the axis of the hydraulic telescopic rod 32. A spring 36 is sleeved on the outer wall of the thin end of the telescopic rod 35. The spring 36 is a high-temperature resistant compression spring, which is in a slightly compressed state under natural conditions. Its two ends abut against the top of the pad 11 and the thick end of the telescopic rod 35, respectively. When the mold is closed, the spring 36 is further compressed, which plays a buffering role and reduces the impact force of mold closing on the mold. When the mold is opened, the spring 36 returns to its original position, and the auxiliary connecting plate 33 and the upper mold 4 quickly return to their original positions, improving the production cycle.

[0032] In this embodiment, a guide rod 37 is fitted inside the circular hole with a clearance fit. The bottom of the guide rod 37 passes through the circular hole and is fixed to the top of the connecting plate 33.

[0033] Specifically: A guide rod 37 is fitted into the round hole at the top of the mounting bracket 31 with a clearance. The guide rod 37 is made of high-strength round steel and its surface is polished to reduce sliding friction. The bottom of the guide rod 37 passes through the round hole and is fixed to the top of the connecting plate 33. A limit block is provided at the top to prevent the guide rod 37 from falling out of the round hole. The fit between the guide rod 37 and the round hole further improves the stability and accuracy of the lifting of the connecting plate 33, avoids misalignment between the upper mold 4 and the lower mold 2 when the mold is closed, and ensures the forming accuracy of the busbar groove.

[0034] In this embodiment, the feeding unit 5 includes a storage shell 51 with a storage slot fixed to the top of the workbench 1. One side of the storage shell 51 has a discharge port 511 communicating with the storage slot, and the other side has a sliding groove 512 communicating with the storage slot. Two sliding rods 52 are fixed to the bottom of the workbench 1, and a connecting frame 53 slides on the two sliding rods 52. A cylinder 54 is horizontally fixed to the bottom of the workbench 1. The moving end of the cylinder 54 is fixedly connected to the connecting frame 53. A feeding frame 55 is fixedly connected to the top of the connecting frame 53. The feeding frame 55 can pass through the sliding groove 512. Both ends of the feeding frame 55 are integrally formed with protruding rods 551 for feeding.

[0035] Specifically: the size of the storage slot is adapted to the size of the busbar die-casting raw material, and multiple raw materials can be stored at one time, reducing the workload of frequent manual feeding. One side of the storage shell 51 is provided with a discharge port 511 that connects to the storage slot. The height of the discharge port 511 is slightly greater than the thickness of the raw material, and the width matches the width of the raw material, ensuring that the raw material can be smoothly sent out from the discharge port 511 without deviation. On the other side of the storage shell 51, two sliding grooves 512 that connect to the storage slot are symmetrically provided. The sliding grooves 512 are set in the horizontal direction, and the length is adapted to the movement stroke of the feeding rack 55, so that the feeding rack 55 can pass through and slide.

[0036] Cylinder 54 is an adjustable speed cylinder, which can adjust the feeding speed according to the production cycle and is used to drive the horizontal movement of connecting frame 53 and feeding frame 55.

[0037] The protruding rod 551 is L-shaped and its height is adapted to the thickness of the raw material in the receiving groove. It is used to abut against the raw material and push the raw material out of the discharge port 511 to realize automatic feeding.

[0038] In this embodiment, two movable slots 12 are provided on the workbench 1, and the connecting frame 53 is slidably engaged in the movable slots 12.

[0039] Specifically: Two moving slots 12 are provided on the workbench 1. The moving slots 12 are set along the feeding direction and their length matches the movement stroke of the feeding frame 55. The top of the connecting frame 53 is slidably fitted in the moving slots 12. The moving slots 12 are used to guide and limit the movement of the connecting frame 53, so as to prevent the feeding frame 55 from deviating when it moves and ensure that the raw material can be delivered to the die-casting station of the lower mold 2.

[0040] In this embodiment, the limiting unit 6 includes a U-shaped block 61 that can slide up and down in the receiving groove 25. The top two ends of the U-shaped block 61 are rotatably connected to a rotating shaft 62. The bottom of the U-shaped block 61 is provided with mounting holes at equal intervals along its length direction. A compression spring 63 is vertically fixedly connected in the mounting holes. The bottom of the compression spring 63 is fixedly connected inside the receiving groove 25.

[0041] Specifically: The top two ends of the U-shaped block 61 are rotatably connected to the rotating shaft 62 via bearings. The rotating shaft 62 is made of stainless steel with a smooth surface. It is used to reduce the friction between the raw material and the U-shaped block 61 when the busbar is being fed and the finished product is being unloaded, so as to avoid scratching the raw material or the finished product, and at the same time facilitate the sliding of the raw material and the finished product.

[0042] The bottom of the U-shaped block 61 has several mounting holes equidistantly spaced along its length. A compression spring 63 is vertically fixedly connected to each mounting hole. The compression spring 63 is a high-temperature resistant compression spring, and its bottom is fixedly connected to the inner bottom surface of the receiving groove 25. In its natural state, the compression spring 63 is in a slightly stretched state, pushing the U-shaped block 61 to move upward, so that the rotating shaft 62 is higher than the top of the lower mold 2. When the mold is closed, the upper mold 4 moves downward, abuts against the U-shaped block 61 and presses it into the receiving groove 25, and the compression spring 63 is compressed. After the mold is closed, the upper mold 4 returns to its original position, the compression spring 63 returns to its original position, and pushes the U-shaped block 61 and the rotating shaft 62 back to their initial positions, ensuring that subsequent loading and unloading operations can proceed normally.

[0043] In this embodiment, the top material unit 8 includes Z-shaped rotating rods 81 arranged in a rectangular array and rotatably mounted on the inner wall of the mounting groove 24. One end of each of the four Z-shaped rotating rods 81 is rotatably connected to a support plate 82. Two rows of top material rods 83 are fixed along the length of the top of the support plate 82. Rubber suction cups 84 are fixedly connected to the top of each top material rod 83. A servo motor 85 is fixedly connected to one end of the top of the worktable 1 via a mounting base. The servo motor 85 is of adjustable speed type. Its output shaft passes through the side wall of the worktable 1, enters the mounting groove 24, and is fixedly connected to one of the Z-shaped rotating rods 81 via a key connection. This provides power to the top material unit 8 and the roller conveyor 7. A belt 86 is fitted onto the output shaft of the servo motor 85. 6. A high-temperature and wear-resistant transmission belt is selected, with the other end sleeved on the extension rod 71 to achieve synchronous transmission between the servo motor 85 and the extension rod 71. The pulley on the output shaft of the servo motor 85 and the pulley on the extension rod 71 have different sizes. By reasonably setting the diameter ratio of the two pulleys, when the servo motor 85 drives the output shaft to rotate, it drives the Z-shaped rotating rod 81 to rotate periodically, which in turn drives the pallet 82, the top material rod 83 and the rubber suction cup 84 to perform intermittent periodic lifting and lowering movements to achieve intermittent top material action. On the other hand, it drives the extension rod 71 and the rotating roller of the roller conveyor 7 to rotate at a uniform speed to ensure that the top material action matches the conveying action rhythm of the roller conveyor 7, and achieve the coordinated operation of top material and unloading.

[0044] In this embodiment, the support block is made of cast iron and has a bearing hole at the top. One end of the extension rod 71 is rotatably installed in the bearing hole of the support block. A rolling bearing is provided in the bearing hole to reduce the friction when the extension rod 71 rotates, ensuring that the extension rod 71 rotates smoothly, thereby ensuring the conveying stability of the roller conveyor 7.

[0045] In the use of a die-casting device for busbar trunking production, before startup, the device is in an initialization state: the hydraulic telescopic rod 32 is in a retracted state, driving the connecting plate 33, pressure plate 34, and upper mold 4 to the highest position, the upper mold 4 and lower mold 2 are in a fully open state, the spring 36 on the telescopic rod 35 is in a naturally slightly compressed state, the compression spring 63 of the limiting unit 6 is in a naturally slightly stretched state, the U-shaped block 61 and the rotating shaft 62 are raised to the highest position, the rotating shaft 62 is higher than the top of the lower mold 2, and the servo motor 85 of the ejector unit 8 is stopped. In the current state, the Z-shaped rotating rod 81 is in the initial position, the support plate 82, the top rod 83 and the rubber suction cup 84 are in the lowest position, the top of the rubber suction cup 84 does not exceed the inner wall of the arc groove 21 of the lower mold 2, the cylinder 54 of the feeding unit 5 is in the retracted state, driving the connecting frame 53 and the feeding frame 55 to retract to the end of the sliding groove 512 of the storage shell 51 away from the discharge port 511, the protruding rod 551 of the feeding frame 55 is located in the receiving groove, and several pieces of busbar die casting raw materials are pre-placed in the receiving groove of the storage shell 51, and the roller conveyor 7 is in the stopped state.

[0046] The cylinder 54 of the feeding unit 5 is activated, and the moving end of the cylinder 54 extends, pushing the connecting frame 53 to move horizontally towards the discharge port 511 along the sliding rod 52 and the moving groove 12 of the worktable 1. The connecting frame 53 drives the feeding frame 55 and the protruding rod 551 to move synchronously. During the movement of the protruding rod 551, it abuts against the outermost piece of raw material in the storage tank 51, pushing the raw material along the storage tank towards the discharge port 511, and finally pushing the raw material out of the discharge port 511 and conveying it to the top die-casting station of the lower mold 2. At this time, the U-shaped block 61 of the limiting unit 6 plays a limiting role on the raw material to ensure feeding accuracy. After the raw material is positioned, the moving end of the cylinder 54 retracts, driving the connecting frame 53, the feeding frame 55 and the protruding rod 551 to return to the initial position. The next piece of raw material in the storage tank falls to the designated position under the action of gravity, waiting for the next feeding, completing one automatic feeding cycle.

[0047] After the material is loaded, the hydraulic telescopic rod 32 of the lifting unit 3 is activated. The moving end of the hydraulic telescopic rod 32 extends and pushes the connecting plate 33 to move downward. The connecting plate 33 drives the pressure plate 34 and the upper mold 4 to move downward synchronously. At the same time, it drives the guide rod 37 to slide downward along the round hole of the mounting frame 31. The thin end of the telescopic rod 35 contracts relative to the thick end, and the spring 36 is further compressed, which plays a buffering role and ensures that the upper mold 4 descends smoothly.

[0048] As the upper mold 4 continues to descend, its bottom first contacts the U-shaped block 61 of the limiting unit 6, pushing the U-shaped block 61 to slide downward along the receiving groove 25. The compression spring 63 is compressed until the top of the U-shaped block 61 is flush with the top of the lower mold 2, preventing the limiting unit 6 from affecting the mold closing action. It continues to descend until the arc-shaped protrusion 41 of the upper mold 4 is embedded in the arc-shaped groove 21 of the lower mold 2, and the mold is completely closed with the lower mold 2. After the mold closing pressure reaches the preset value, the hydraulic telescopic rod 32 stops extending, maintaining the mold closing state. The material is formed into a busbar trough shell with an arc-shaped protrusion under the cooperation of the arc-shaped groove 21 and the arc-shaped protrusion 41. The arc-shaped protrusion enhances the structural strength of the busbar trough without increasing the thickness of the material, while saving material consumption.

[0049] Next, the servo motor 85 of the top material unit 8 is started. The output shaft of the servo motor 85 starts to rotate, which drives the extension rod 71 to rotate synchronously through the belt 86. The extension rod 71 drives the rotating roller of the roller conveyor 7 to rotate at a uniform speed. The roller conveyor 7 enters the working state and is ready to receive the finished product.

[0050] Meanwhile, the output shaft of the servo motor 85 drives the Z-shaped rotating rod 81 connected to it to rotate periodically. Since the four Z-shaped rotating rods 81 are connected to the support plate 82 in a rectangular array, when the Z-shaped rotating rods 81 rotate, they drive the support plate 82 to perform intermittent periodic lifting and lowering movements: when one end of the Z-shaped rotating rod 81 rotates upward, the support plate 82 rises, driving the ejector rod 83 and the rubber suction cup 84 to move upward. The ejector rod 83 passes through the movable groove 23 of the lower mold 2 and extends into the arc-shaped groove 21. The rubber suction cup 84 is attached to the bottom of the finished product of the busbar groove, pushing the finished product out of the arc-shaped groove 21. During the ejection process, the compression spring 63 of the limiting unit 6 gradually resets, pushing the U-shaped block 61 and the rotating shaft 62 to rise. The rotating shaft 62 abuts against both sides of the finished product, playing a stable lifting role for the finished product and preventing the finished product from tilting or slipping.

[0051] Because of the size difference between the pulley on the output shaft of the servo motor 85 and the pulley on the extension rod 71, it is ensured that when the top material rod 83 rises to the highest position, the top of the finished product is flush with the top of the rotating roller of the roller conveyor 7, and the finished product just moves to the feed end of the roller conveyor 7. At this time, the Z-shaped rotating rod 81 starts to rotate downward, and the pallet 82, the top material rod 83 and the rubber suction cup 84 descend and reset. The rubber suction cup 84 separates from the finished product, and the finished product moves smoothly onto the roller conveyor 7 under its own gravity and the friction of the rotating roller of the roller conveyor 7. It is then transported by the roller conveyor 7 to the next processing step, completing one automatic unloading operation.

[0052] The intermittent, periodic lifting motion of the top material unit 8 is precisely matched with the uniform rotation rhythm of the roller conveyor 7, ensuring that the finished product can be smoothly conveyed after each top material is completed, avoiding problems such as jamming and scratches. At the same time, a single servo motor 85 realizes the synchronous drive of top material and unloading, which simplifies the structure and reduces energy consumption and maintenance costs.

[0053] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die-casting apparatus for producing busbar trunking, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixed with a pad (11), and the top of the pad (11) has an opening (111) through it. The top of the pad (11) is fixedly connected with a lower mold (2). The top of the lower mold (2) has several arc-shaped grooves (21) equidistantly spaced along its length. The bottom of the lower mold (2) has a rectangular groove (22). The top of the lower mold (2) has a movable groove (23) connecting the rectangular groove (22) between two adjacent arc-shaped grooves (21). The pad (11) and the movable groove (23) are connected to form an installation groove (24). The top of the lower mold (2) also has a receiving groove (25), and a limit unit (6) is provided in the receiving groove (25). The top of the workbench (1) is fixed with a lifting unit (3), and the moving end of the lifting unit (3) is fixedly connected with an upper mold (4). The bottom of the upper mold (4) is provided with several arc-shaped protrusions (41) at equal intervals along its length. One end of the workbench (1) is provided with a feeding unit (5) and the other end is provided with a roller conveyor (7). An extension rod (71) is fixedly connected to the rotating roller of the roller conveyor (7) near the feeding unit (5). A top material unit (8) is provided in the mounting groove (24). The top material unit (8) is connected to the extension rod (71) in a transmission connection.

2. The die-casting apparatus for busbar trunking production according to claim 1, characterized in that: The lifting unit (3) includes a mounting bracket (31) fixed to the top of the workbench (1). A through hole is provided at the center of the top of the mounting bracket (31), and round holes are provided at both ends of the top of the mounting bracket (31).

3. The die-casting apparatus for busbar trunking production according to claim 2, characterized in that: The top of the mounting bracket (31) is fixedly connected to a hydraulic telescopic rod (32), and the moving end of the hydraulic telescopic rod (32) is fixedly connected to a connecting plate (33) after passing through the through hole. The bottom of the connecting plate (33) is fixedly connected to a pressure plate (34), and the bottom of the pressure plate (34) is fixedly connected to an upper mold (4).

4. The die-casting apparatus for busbar trunking production according to claim 3, characterized in that: The bottom of the connecting plate (33) is fixed with four telescopic rods (35) in a rectangular array. The thin end of the telescopic rod (35) is fixed to the top of the pad (11). A spring (36) is sleeved on the outer wall of the thin end of the telescopic rod (35). The two ends of the spring (36) abut against the top of the pad (11) and the thick end of the telescopic rod (35), respectively.

5. The die-casting apparatus for busbar trunking production according to claim 2, characterized in that: A guide rod (37) is fitted inside the circular hole with a clearance. The bottom of the guide rod (37) passes through the circular hole and is fixed to the top of the connecting plate (33).

6. The die-casting apparatus for busbar trunking production according to claim 1, characterized in that: The feeding unit (5) includes a storage shell (51) with a storage slot fixed on the top of the workbench (1). The storage shell (51) has a discharge port (511) connected to the storage slot on one side and a sliding groove (512) with two connected storage slots on the other side. Two sliding rods (52) are fixed at the bottom of the workbench (1). A connecting frame (53) slides on both sliding rods (52). A cylinder (54) is horizontally fixed at the bottom of the workbench (1). The moving end of the cylinder (54) is fixedly connected to the connecting frame (53). A feeding frame (55) is fixedly connected at the top of the connecting frame (53). The feeding frame (55) can pass through the sliding groove (512). Both ends of the feeding frame (55) are integrally formed with protruding rods (551) for feeding.

7. The die-casting apparatus for busbar trunking production according to claim 6, characterized in that: Two movable slots (12) are provided on the workbench (1), and the connecting frame (53) slides in the movable slots (12).

8. The die-casting apparatus for busbar trunking production according to claim 1, characterized in that: The limiting unit (6) includes a U-shaped block (61) that can slide up and down in the receiving groove (25). The top two ends of the U-shaped block (61) are rotatably connected to a rotating shaft (62). The bottom of the U-shaped block (61) is provided with mounting holes at equal intervals along its length direction. A compression spring (63) is vertically fixedly connected in the mounting hole. The bottom of the compression spring (63) is fixedly connected inside the receiving groove (25).

9. The die-casting apparatus for busbar trunking production according to claim 1, characterized in that: The top material unit (8) includes Z-shaped rotating rods (81) arranged in a rectangular array and rotatably installed on the inner wall of the mounting groove (24). One end of each of the four Z-shaped rotating rods (81) is rotatably connected to a support plate (82). Two rows of top material rods (83) are fixed along the length of the top of the support plate (82). A rubber suction cup (84) is fixedly connected to the top of the top of the top of the top of the workbench (1). A servo motor (85) is fixedly connected to one end of the top of the workbench (1). The output shaft of the servo motor (85) passes through the mounting groove (24) and is fixedly connected to one of the Z-shaped rotating rods (81). A belt (86) is sleeved on the output shaft of the servo motor (85). The other end of the belt (86) is sleeved on the extension rod (71).

10. A die-casting apparatus for busbar trunking production according to claim 9, characterized in that: A support block is fixedly connected to the top of the workbench (1), and one end of the extension rod (71) rotates on the support block.

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