An automated press production line for powder forming

Abstract

The utility model relates to mechanical processing technical field especially, relates to a kind of powder forming automation press production line. Including feeding unit, storage unit, feeding unit, pressing unit, stripping unit, control unit, control unit is electrically connected with feeding unit, storage unit, feeding unit, pressing unit and stripping unit respectively, for coordinating the action time sequence of each unit. The utility model can make powder forming reach automation production, improve production efficiency, reduce artificial cost.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to an automated powder forming and pressing production line. Background Technology

[0002] In the field of powder molding production, traditional equipment relies heavily on manual labor for feeding and picking up parts. This manual intervention leads to low production efficiency. In terms of production flexibility, traditional equipment often uses a single mold pressing cavity, resulting in low production efficiency and difficulty in adapting to the market's demand for rapid production of diversified products.

[0003] Therefore, this utility model proposes an automated powder molding pressing production line, which enables automated powder molding, improves production efficiency, and reduces labor costs. Summary of the Invention

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an automated powder molding and pressing production line.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automated powder molding pressing production line includes: The feeding unit is used to transport the powder to be pressed to the storage unit; The storage unit is used to store the powder to be pressed, including a storage hopper and a double conveying pipe; A feeding unit, connected to the storage unit, is used to directionally convey powder to the pressing unit; A pressing unit is a hydraulic press used to press powder fed into a feeding unit. It includes a movable crossbeam, a floating template, a mold frame fixing plate, a lower mold frame template, and at least two pressing cavities arranged in sequence. The pressing cavities are provided inside the floating template, and an upper punch plate is correspondingly provided above the pressing cavities. A demolding unit is used to push the pressed molded part out of the pressing cavity, including a lower cylinder, the output end of which is fixedly connected to the lower template of the mold frame; The control unit is electrically connected to the feeding unit, storage unit, delivery unit, pressing unit and demolding unit respectively, and is used to coordinate the action sequence of each unit.

[0006] Furthermore, the feeding unit includes a support plate, a working plate, a push cylinder, a feeding box fixing plate, a feeding box, and a feed pipe. One side of the support plate is fixedly connected to one side of the floating template. The working plate is fixedly connected above the support plate. The working plate is slidably connected to the feeding box fixing plate. The lower part of the feeding box passes through the feeding box fixing plate. At least two feed pipes are fixedly connected to the top of the feeding box. The feed pipes are connected to the dual conveying pipes.

[0007] Furthermore, the feeding box is provided with a feeding bin corresponding to the feeding pipe, the bottom of the feeding bin is provided with an outlet, and a speed-regulating motor is also provided outside the feeding box, the output shaft of the speed-regulating motor extending into and rotating in the feeding bin.

[0008] Furthermore, a feeding box pad is fixedly connected to the lower part of the feeding box. The feeding box pad slides on the surface of the working plate. The feeding box pad has an opening corresponding to the outlet of the feeding bin. The opening corresponds to the pressing chamber. The output end of the pushing cylinder is fixedly connected to the side wall of the feeding box pad and the side wall of the feeding box.

[0009] Furthermore, one end of the working plate is fixed to the upper surface of the floating template, and an opening is provided on the working plate at the location corresponding to the pressing cavity.

[0010] Furthermore, a mold spring is bolted to the top of the feeding box, and the lower end of the bolt is connected to the feeding box fixing plate.

[0011] Furthermore, a material leakage device is fixedly connected to the side of the floating template opposite to the support plate. The material leakage device includes a material leakage trough and a material receiving box, and the material receiving box is movably connected to the lower end of the material leakage trough.

[0012] Furthermore, the actuating cylinder is a HOB cylinder.

[0013] Furthermore, the feeding unit uses a screw conveyor to transport the powder.

[0014] Compared with existing technologies, the adjustable limiting device for powder presses provided by this utility model adopts a simple mechanical structure, and its advantages are as follows: 1. By replacing manual feeding and picking with automated production methods, the speed limitations of manual operation are eliminated, the automated process reduces the waiting time between processes, and greatly improves the overall production efficiency. 2. The automated production method reduces the direct contact between humans and moving parts of equipment, avoiding the risk of mechanical injury that may occur during manual operation and reducing the production safety accident rate; at the same time, the automated feeding ensures the accuracy of the feeding box movement through the cooperation of HOB cylinders and linear guide rails. 3. The design of dual pressing chambers with two material discharge ports breaks through the limitations of traditional single pressing chambers, and the versatility and production adaptability of the equipment are significantly enhanced. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the present utility model; Figure 2 This is a three-dimensional schematic diagram of the present invention; Figure 3 This is a cross-sectional view of the main unit of this utility model; Figure 4 This is a schematic diagram of the feeding unit structure of this utility model; Figure 5 This is a schematic diagram of the feeding unit of this utility model without the working plate. Figure 6 for Figure 5 A schematic diagram of the structure with the feed box removed; In the diagram: 1. Feeding unit; 2. Storage unit; 21. Storage hopper; 3. Feeding unit; 301. Working plate; 302. Push cylinder; 303. Feeding box pad; 304. Feeding box fixing plate; 305. Feeding box; 306. Speed ​​regulating motor; 307. Feeding pipe; 308. Waste trough; 309. Support plate; 310. Feeding bin. Pressing unit, 41. Movable crossbeam, 42. Floating template, 43. Mold frame fixing plate, 44. Lower template of mold frame, 45. Pressing cavity, 46. Upper punch pad, 48. Lower cylinder. 5. Control unit 61. Material discharge trough; 62. Material receiving box. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0018] Example 1, referring to Figures 1-6 A powder molding automated pressing production line includes: The feeding unit 1 is used to convey the powder to be pressed to the storage unit 2; The storage unit 2 is used to store the powder to be pressed, and includes a storage hopper 21 and a double conveying pipe; Feeding unit 3, connected to the storage unit, is used to directionally convey powder to pressing unit 4; The pressing unit 4 is a hydraulic press for pressing the powder fed by the feeding unit. It includes a movable crossbeam 41, a floating template 42, a mold frame fixing plate 43, a lower mold frame template 44 and at least two pressing chambers 45 arranged in sequence. The floating template 42 is provided with pressing chambers 45. The demolding unit is used to push the pressed molded part out of the pressing cavity 45, and includes a lower cylinder 48, the output end of which is fixedly connected to the lower template 44 of the mold frame; The control unit 5 is electrically connected to the feeding unit 1, the storage unit 2, the feeding unit 3, the pressing unit 4, and the demolding unit, respectively, and is used to coordinate the action sequence of each unit.

[0019] With the above scheme, the control unit 5 controls the powder to be first conveyed from the feeding unit 1 to the storage hopper 21 in the storage unit 2, and then conveyed from the lower end of the storage hopper 21 to the feeding unit 3 through the double conveying pipe. The feeding unit 3 then sends the powder to the pressing chamber 45 in the pressing unit 4 for pressing. After pressing, the finished product is exposed through the lower cylinder 48. When the feeding unit 3 feeds the powder again, it pushes out the finished product and continues to feed and press.

[0020] Example 2: In this example, the feeding unit 1 uses a screw conveyor to transport powder. The prepared powder is first placed in the feeding trough, and then transported to the storage hopper 21 through the feeding conveying pipe with an internal screw conveying mechanism. The storage hopper 21 is filled with about 250 liters of powder.

[0021] A vibrator is installed on the bottom outer shell of the storage hopper 21. The vibrator breaks the bonding force between the powders by high-frequency vibration (usually 20-60Hz), causing the arched structure to collapse and ensuring that the powder continues to fall.

[0022] The pneumatic flange butterfly valve installed at the bottom of the storage hopper 21, controlled by the control unit, allows an appropriate amount of powder to be added into the dual conveying pipe. This pneumatic flange butterfly valve is existing technology; its working principle involves rapid opening and closing driven by air pressure. An observation window is provided on the side wall of the storage hopper 21, facilitating real-time manual monitoring of the remaining powder level and operating status.

[0023] When the feeding unit 3 needs to feed, the pneumatic flange butterfly valve of the storage hopper 21 opens, and the powder enters the conveying double pipe. The conveying double pipe is made of PVC pipe, which ensures both the flexibility of a flexible hose and the rigidity of a rigid pipe.

[0024] Example 2, refer to Figures 3-6As shown, the feeding unit 3 includes a support plate 309, a working plate 301, a push cylinder 302, a feeding box fixing plate 304, a feeding box 305, and a feed pipe 307. One side of the support plate 309 is fixedly connected to one side of the floating template 42. The working plate 301 is fixedly connected above the support plate 309. The working plate 301 is slidably connected to the feeding box fixing plate 304, specifically through a slider-rail pair. The rail is arranged along the feeding direction. The precise cooperation between the slider and the rail ensures that the feeding box fixing plate 304 slides smoothly with a positioning error ≤ ±0.05mm, satisfying the precise docking of the feeding box 305 and the pressing chamber 45. The lower part of the feeding box 305 passes through the feeding box fixing plate 304. At least two feed pipes 307 are fixedly connected to the top of the feeding box 305, and the feed pipes 307 are connected to the double conveying pipes. In this embodiment, the top of the feeding box 305 is a detachable cover plate.

[0025] The feeding box 305 is equipped with a feeding bin 310 corresponding to the feeding pipe 307. The bottom of the feeding bin 310 is provided with an outlet that passes through the bottom of the feeding box 305. A weight sensor can be installed in the feeding bin 310 to monitor the weight of the material entering the feeding bin 310. A speed-regulating motor 306 is also provided outside the feeding box 305. The output shaft of the speed-regulating motor 306 extends into and rotates in the feeding bin 310. The output shaft is rotated and stirred by the speed-regulating motor 306, so that the powder in the feeding bin 310 is uniform before being sent to the pressing chamber 45, and the accumulation of powder is reduced.

[0026] A feeding box pad 303 is fixedly connected to the lower part of the feeding box 305. The feeding box pad 303 slides on the upper surface of the working plate 301. The feeding box pad 303 has an opening corresponding to the outlet of the feeding bin 310. The feeding box pad 303 is made of polytetrafluoroethylene (PTFE). Whether it is metal powder, ceramic powder, or other types of powder, the PTFE pad can effectively reduce the adhesion and accumulation of powder on its surface. This ensures that the powder in the feeding box 305 can flow out smoothly and evenly from the opening of the feeding box pad 303, avoiding problems such as reduced feeding amount and uneven feeding caused by powder adhering to the pad, and also has good wear resistance. The abrasive debris generated by PTFE during the wear process will not cause wear or scratches to the working plate 301 or other parts, ensuring the accuracy and service life of the key components of the equipment. The opening of the feeding box pad 303 corresponds to the pressing chamber 45. The output end of the pushing cylinder 302 is fixedly connected to the cylinder connecting seat, and the cylinder connecting seat is then connected to the side wall of the feeding box pad 303 and the side wall of the feeding box 305 by bolts.

[0027] After the powder enters the dual conveying pipes, it then enters the connected feed pipes 307, and then enters the feeding hopper 310 through the feed pipes 307. When the amount of powder entering the feeding hopper 310 reaches the preset value, the storage hopper 21 stops feeding. At this time, the hydraulic cylinder 302 pushes the side wall of the feeding box pad 303 and the side wall of the feeding box 305, so that the feeding box pad 303 and the feeding box 305 enter the pressing unit 4. In order to prevent and reduce the vibration of the feeding box fixing plate 304 during the pushing process, multiple bolts are connected to the feeding box fixing plate 304 through the mold spring on the top of the feeding box 305, i.e., the cover plate. The mold spring is fixed to the feeding box fixing plate 304 by the bolts. Since the polytetrafluoroethylene material used in the feeding box pad 303 is in direct frictional contact with the working plate 301, the mold spring can reduce the vibration carried by its friction.

[0028] In this embodiment, the push cylinder 302 is a HOB cylinder, and its rear end is fixed to the work plate 301 by a cylinder support frame. The HOB cylinder has strong load capacity, good stability, and flexible control, which can ensure that the cylinder can work stably and efficiently.

[0029] In this embodiment, the hydraulic press is a frame-type hydraulic press, such as... Figure 3 As shown, the upper plate of the movable crossbeam 41 is connected through the output end of the main cylinder. The reciprocating motion of the main cylinder is driven by the hydraulic system integrated on one side of the hydraulic press. The pressure oil transmitted through the hydraulic pipeline pushes the output end of the main cylinder to complete the extension and retraction action, realizing the output of pressing force and stroke control, so that the movable crossbeam 41 slides up and down inside the hydraulic press. Control unit 5 is also located on one side of the hydraulic press. The upper template of the mold frame is fixedly connected to the lower plate of the movable crossbeam 41. The upper punch plate 46 is then fixed to the lower plate of the upper template of the mold frame. The upper template guide sleeves are fixedly installed at the four corners of the upper template of the mold frame. The upper guide post of the mold frame slides on the four upper template guide sleeves. The lower end of the upper guide post is fixedly connected to the upper plate of the floating template 42. The female mold is fixed inside the floating template 42 by bolts. The lower punch plate is slidably connected inside the female mold. The lower end of the lower punch plate is fixed to the upper plate of the mold frame fixing plate 43. The mold core is also slidably connected inside the lower punch plate. The lower end of the mold core is fixedly connected to the upper plate of the lower template 44 of the mold frame. The female mold, the lower punch plate and the mold core constitute the pressing cavity 45 of the pressing unit 4. The maximum filling height of the pressing cavity 45 is 200mm. The central axes of the female mold, the lower punch plate and the mold core coincide, so that the powder is subjected to uniform force in all directions during the pressing process in the forming cavity 45, ensuring consistent product quality and uniform density of the formed product.

[0030] A mold frame fixing plate support plate is also fixedly connected to the lower surface of the mold frame fixing plate 43, which plays a role in fixing and supporting the mold frame fixing plate 43.

[0031] Lower guide columns of the mold frame are respectively set at the four corners of the floating template 42 and the lower template 44 of the mold frame. The lower guide columns of the mold frame slide at the four corners of the mold frame fixing plate 43. The upper and lower surfaces of the mold frame fixing plate 43 are provided with guide sleeves at the places where the lower guide columns of the mold frame pass through. The guide sleeves can transmit radial loads, constrain the movement trajectory, and ensure the verticality of the upper and lower movement of the lower guide columns of the mold frame.

[0032] After the feeding unit 3 enters the hydraulic press, because the feeding box pad 303 has an opening at the bottom and the working plate 301 has an opening through it, and the opening and the opening correspond to the pressing chamber 45, the powder is conveyed to the pressing chamber 45 through the opening of the feeding box pad 303, and the oil cylinder 302 drives the feeding box 305. The upper punch plate 46 enters the pressing chamber 45 under the drive of the main cylinder for pressing. After the product is formed, the main cylinder retracts, and the output end of the lower cylinder 48 extends and retracts, driving the lower mold plate 44 of the mold frame to move downward. The lower mold plate 44 then drives the lower guide post of the mold frame to move downward. The lower guide post of the mold frame then drives the floating mold plate 42 to move downward. The mold core and the female mold are also driven downward. At this time, the formed product is above the pressing chamber 45. After the feeding unit 3 is filled with material, the push cylinder 302 pushes the feeding box 305 to enter the hydraulic press again. The feeding box plate 303 pushes the formed product out of the hydraulic press. The feeding box 305 then starts feeding the pressing chamber 45 again.

[0033] Since it is a powder molding product, there will inevitably be residue. In order to clean up these residues, a waste trough 308 is provided on the working plate 301 near the starting position of the feeding box pad 303. A waste box is provided on the lower surface of the working plate 301 corresponding to the waste trough 308. When the feeding box pad 303 retracts, it will bring back the powder that was left on the working plate 301 and collect it in the waste box through the waste trough 308.

[0034] like Figure 2 As shown, a material drain trough 61 is fixedly connected to the side of the floating template 42 away from the feeding unit 3. Multiple drain holes are penetrating the surface of the material drain trough 61, which is flush with the upper surface of the working plate 301. This allows the formed product to be pushed into the upper surface of the material drain trough 61 when the feeding box pad 303 enters the hydraulic press, and excess material falls from the material drain trough 61 into the receiving box 62. The material drain trough 61 is generally U-shaped, and the receiving box 62 can slide under the material drain trough 61.

[0035] To reduce the adhesion of powder to various units, a polytetrafluoroethylene (PTFE) anti-stick coating is applied to the inner walls of the feeding conveyor pipe, storage hopper 21, double conveying pipe, and feeding bin 310. PTFE has an extremely low coefficient of friction and solid surface tension, and it adheres to almost no substances. Especially in the storage hopper 21, the vibration of the vibrator continuously changes the contact state between the powder and the storage hopper 21, reducing powder adhesion to the wall surface and lowering powder residue by more than 90%.

[0036] During installation, such as Figure 1 As shown, the lower part of the hydraulic press is installed in the foundation, the feeding unit 1 is installed in front of the hydraulic press, and the control unit 5 is installed on the side of the hydraulic press. The program in the control unit 5 can be written by those skilled in the art to control the timing of the actions of each unit.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automated powder molding and pressing production line, characterized in that: include The feeding unit (1) is used to transport the powder to be pressed to the storage unit (2). The storage unit (2) is used to store the powder to be pressed, including the storage hopper (21) and the conveying double pipe; The feeding unit (3) is connected to the storage unit (2) and is used to directionally convey the powder to the pressing unit (4). The pressing unit (4) is a hydraulic press used to press the powder fed by the feeding unit (3). It includes a movable crossbeam (41), a floating template (42), a mold frame fixing plate (43), a mold frame lower template (44), and at least two pressing chambers (45) arranged in sequence. The pressing chamber (45) is provided in the floating template (42), and an upper punch plate (46) is provided above the pressing chamber (45). The demolding unit is used to push the pressed molded part out of the pressing cavity (45), including a lower cylinder (48), the output end of which is fixedly connected to the lower template (44) of the mold frame; The control unit (5) is electrically connected to the feeding unit (1), the storage unit (2), the feeding unit (3), the pressing unit (4), and the demolding unit, respectively, and is used to coordinate the action sequence of each unit.

2. The automated powder molding and pressing production line according to claim 1, characterized in that: The feeding unit (3) includes a support plate (309), a working plate (301), a push cylinder (302), a feeding box fixing plate (304), a feeding box (305), and a feeding pipe (307). One side of the support plate (309) is fixedly connected to one side of the floating template (42). The working plate (301) is fixedly connected above the support plate (309). The working plate (301) is slidably connected to the feeding box fixing plate (304). The lower part of the feeding box (305) passes through the feeding box fixing plate (304). At least two feeding pipes (307) are fixedly connected to the top of the feeding box (305). The feeding pipes (307) are connected to the material conveying double pipe.

3. The automated powder molding and pressing production line according to claim 2, characterized in that: The feeding box (305) is provided with a feeding bin (310) corresponding to the feeding pipe (307). The bottom of the feeding bin (310) is provided with an outlet. The feeding box (305) is also provided with a speed-regulating motor (306). The output shaft of the speed-regulating motor (306) extends into and rotates in the feeding bin (310).

4. The automated powder forming and pressing production line according to claim 2, characterized in that: The lower part of the feeding box (305) is fixedly connected to a feeding box pad (303). The feeding box pad (303) slides on the upper surface of the working plate (301). The feeding box pad (303) has an opening corresponding to the outlet of the feeding bin (310). The opening corresponds to the pressing chamber (45). The output end of the pushing cylinder (302) is fixedly connected to the side wall of the feeding box pad (303) and the side wall of the feeding box (305).

5. The automated powder molding and pressing production line according to claim 4, characterized in that: One end of the working plate (301) is fixed to the upper surface of the floating template (42), and an opening is provided on the working plate (301) corresponding to the pressing cavity (45).

6. The automated powder molding and pressing production line according to claim 2, characterized in that: A mold spring is bolted to the top of the feeding box (305), and the lower end of the bolt is connected to the box fixing plate (304).

7. The automated powder molding and pressing production line according to claim 1, characterized in that: The floating template (42) is also fixedly connected to a material leakage device on the side opposite to the support plate (309). The material leakage device includes a material leakage trough (61) and a material receiving box (62). The material receiving box (62) is movably connected to the lower end of the material leakage trough (61).

8. The automated powder molding and pressing production line according to claim 1, characterized in that: The push cylinder (302) is a HOB cylinder.

9. The automated powder molding and pressing production line according to claim 1, characterized in that: The feeding unit (1) uses a screw conveyor to transport powder.

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