A punch rod forming device

Abstract

The utility model provides a punch bar forming device relates to mechanical processing equipment technical field, this punch bar forming device includes upper die holder, lower die holder, extruding part, push material part, filler part, filler part is used for sending powder material to the forming cavity of lower die holder, the material supplementing part, the material supplementing part is used for supplementing the powder material in the filler part, this kind of punch bar forming device when using, can through the use of hopper more accurate delivery metal powder in the forming cavity of lower die holder, and every time when hopper completes the transfer of metal powder in the forming cavity, hopper resets after, through the storage tank can timely supplement metal powder in the hopper again, so as to can ensure that fills the metal powder of sufficient amount in the forming cavity once, and through the use of hopper, can limit the activity range of metal powder, avoid a large amount of metal powder to spread in the installation platform and base, so as to can reduce the pressure of repeatedly cleaning the surface of installation platform and base of staff, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, specifically a punch forming device. Background Technology

[0002] When manufacturing punches used in stamping dies, a common processing method is powder molding, followed by sintering and other subsequent processing. Existing punch forming devices require filling the forming cavity with metal powder. Since the forming cavity is located between two push blocks, the left and right movement of these push blocks moves the metal powder between them, thus enabling powder loading and cleaning. However, because the metal powder is only restricted to the two push block directions, other directions are unrestricted. When the push blocks move the metal powder, it may not move in the direction of the push blocks, requiring workers to help gather the powder. Furthermore, the area of ​​the opening at the top of the forming cavity is relatively small compared to the area of ​​the metal powder spread out, sometimes requiring two reciprocating motions to fill the cavity. This results in low efficiency in feeding metal powder into the forming cavity, affecting the forming efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a punch forming device, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: the punch forming device includes:

[0005] Upper mold base;

[0006] Lower mold base;

[0007] The extrusion section, wherein both the upper die holder and the lower die holder are disposed on the extrusion section, the extrusion section being used to extrude the upper die holder into the lower die holder;

[0008] The ejector section is disposed on the extrusion section. The lower die base has a forming cavity inside. Both the upper and lower ends of the forming cavity are open. The ejector section is used to close the lower opening of the forming cavity and can push the formed punch in the forming cavity upward from the forming cavity.

[0009] A filling section, which is used to feed powder into the forming cavity of the lower mold base;

[0010] The feeding section is used to replenish powder into the filling section.

[0011] Preferably, the extrusion section includes a base, two lower die holders are provided, the base has two mounting cavities for accommodating the lower die holders, the interior of the base has a movable cavity communicating with the mounting cavity, a fixed platform is provided above the base, the fixed platform is connected to the base by a column, and a slide is also provided, the slide is slidably connected to the column, a hydraulic cylinder is provided on the fixed platform, the output end of the hydraulic cylinder passes through the fixed platform and is fixedly connected to the slide, and two upper die holders are provided, the two upper die holders are provided on the lower surface of the slide and match the position of the lower die holders.

[0012] Preferably, the pushing part includes a linear actuator one disposed inside the base. The output end of the linear actuator one is provided with a horizontal plate. Both ends of the horizontal plate are respectively provided with round rods. The upper end of the round rods is located inside the forming cavity. A through hole is opened on the base below the movable cavity. The lower end of the round rods is located inside the through hole. A reinforcing block is provided on the horizontal plate outside the round rods.

[0013] Preferably, the filling part includes a mounting platform disposed on one side of the base, a mounting frame disposed on the mounting platform, a second linear actuator disposed on the mounting frame, a crossbar disposed at the output end of the second linear actuator, and hoppers disposed at both ends of the crossbar, the upper and lower ends of the hoppers being open and rectangular, and the lower end of the hoppers being movable along the upper surface of the mounting platform and the upper surface of the base.

[0014] Preferably, the feeding unit includes two storage boxes, which are respectively disposed on one side of the fixed platform and above the hopper. The storage boxes are connected to the mounting platform by a bracket. Both the upper and lower ends of the storage boxes are open and rectangular. The lower opening of the storage box is the same size as the upper opening of the hopper and is aligned. An extension plate is disposed on one side of the hopper, and a reinforcing plate is disposed between the extension plate and the hopper.

[0015] The beneficial effects of this utility model are:

[0016] When in use, this punch forming device can more accurately deliver metal powder into the forming cavity of the lower die base through the use of the hopper. After each transfer of metal powder into the forming cavity, the hopper resets and the storage tank can replenish the metal powder in a timely manner, thus ensuring that a sufficient amount of metal powder is filled into the forming cavity at one time. Furthermore, the use of the hopper can limit the movement range of the metal powder, preventing a large amount of metal powder from scattering on the mounting table and base, thereby reducing the pressure on the workers to repeatedly clean the surface of the mounting table and base. The device has good performance. Attached Figure Description

[0017] Figure 1This is a structural schematic diagram of a specific embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the hopper structure.

[0019] Figure 3 This is a structural diagram of the mounting platform.

[0020] Figure 4 This is a structural diagram of the storage bin.

[0021] Figure 5 This is a schematic diagram of the internal structure of the base.

[0022] In the diagram: 1. Upper mold base; 2. Lower mold base; 3. Base; 4. Movable cavity; 5. Fixed platform; 6. Column; 7. Slide table; 8. Hydraulic cylinder; 9. Linear actuator one; 10. Horizontal plate; 11. Round rod; 12. Reinforcing block; 13. Mounting platform; 14. Mounting bracket; 15. Linear actuator two; 16. Horizontal bar; 17. Hopper; 18. Storage box; 19. Support; 20. Extension plate; 21. Reinforcing plate. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-5 As shown, a punch forming apparatus includes:

[0025] Upper mold base 1;

[0026] Lower mold base 2;

[0027] The extrusion section, the upper die holder 1 and the lower die holder 2 are both provided on the extrusion section, the extrusion section is used to extrude the upper die holder 1 into the lower die holder 2;

[0028] The ejector section is located on the extrusion section. The lower die base 2 has a forming cavity inside. Both the upper and lower ends of the forming cavity are open. The ejector section is used to close the lower opening of the forming cavity and can push the formed punch in the forming cavity upward from the forming cavity.

[0029] The filling section is used to feed powder into the molding cavity of the lower mold base 2;

[0030] The feeding section is used to replenish powder into the filling section.

[0031] Furthermore, the extrusion section includes a base 3, two lower die holders 2, and two mounting cavities for accommodating the lower die holders 2 on the base 3. The interior of the base 3 is provided with a movable cavity 4 that communicates with the mounting cavity. A fixed platform 5 is provided above the base 3, and the fixed platform 5 is connected to the base 3 by a column 6. It also includes a slide 7, which is slidably connected to the column 6. A hydraulic cylinder 8 is provided on the fixed platform 5, and the output end of the hydraulic cylinder 8 passes through the fixed platform 5 and is fixedly connected to the slide 7. Two upper die holders 1 are provided, and the two upper die holders 1 are provided on the lower surface of the slide 7 and match the position of the lower die holders 2.

[0032] The hydraulic pump is used in conjunction with a power source, such as an electric motor, a hydraulic oil tank for oil storage and heat dissipation, hydraulic control valves including directional control valves, safety valves, check valves, filters, hydraulic oil, etc. After the output end of the hydraulic cylinder 8 extends, it can push the slide table 7 to move downward along the column 6 and drive the upper mold base 1 to move downward. The lower end of the upper mold base 1 can enter the forming cavity of the lower mold base 2. The forming cavity of the lower mold base 2 contains metal powder, which is formed by pressing.

[0033] Furthermore, the pusher section includes a linear actuator 1 disposed inside the base 3. A horizontal plate 10 is disposed at the output end of the linear actuator 1. A round rod 11 is disposed at both ends of the horizontal plate 10. The upper end of the round rod 11 is located inside the molding cavity. A through hole is provided on the base 3 below the movable cavity 4. The lower end of the round rod 11 is located inside the through hole. A reinforcing block 12 is disposed on the horizontal plate 10 outside the round rod 11.

[0034] Linear actuator one can be electrically driven, such as an electric push rod, or hydraulically driven, such as a hydraulic actuator equipped with a hydraulic power source. When the output end of linear actuator one retracts, it can drive the horizontal plate 10 to move upward. The horizontal plate 10 can drive the round rod 11 to move upward, pushing the pressed punch blank out of the lower die base 2 to a certain height, but not completely out. The operator needs to remove the punch blank in time. After the punch blank is removed, the output end of linear actuator one extends, driving the horizontal plate 10 and the round rod 11 to move downward.

[0035] The upper end of the round rod 11 is slidably connected to the molding cavity inside the lower mold base 2. When the metal powder enters the molding cavity, the round rod 11 can prevent the metal powder from falling off the lower mold base 2.

[0036] The round rod 11 is made of high-strength steel, which can withstand the pressure when pressing the punch blank. The reinforcing block 12 is made of the same material as the round rod 11 and can be connected together by welding or threaded connection. The reinforcing block 12 can provide auxiliary support for the round rod 11 to improve the stability of the round rod 11 during use.

[0037] Furthermore, the filling section includes a mounting platform 13 disposed on one side of the base 3. A mounting frame 14 is disposed on the mounting platform 13. A linear actuator 2 is disposed on the mounting frame 14. A crossbar 16 is disposed at the output end of the linear actuator 2. A hopper 17 is disposed at both ends of the crossbar 16. Both the upper and lower ends of the hopper 17 are open and rectangular. The lower end of the hopper 17 can move along the upper surface of the mounting platform 13 and the upper surface of the base 3.

[0038] Linear actuator 2 can be electrically driven, such as an electric push rod, or hydraulically driven, such as a hydraulic actuator equipped with a hydraulic power source. The hopper 17 is filled with metal powder. When the upper die holder 1 is above and has not yet moved downward, the output end of linear actuator 2 is extended, and then the two hoppers 17 are pushed to move simultaneously through the crossbar 16. When the two hoppers 17 move to the upper part of the lower die holder 2, the output end of linear actuator 2 stops extending, and then the output end of linear actuator 2 is retracted. Although the hopper 17 stays above the lower die holder 2 for a short time, because the amount of metal powder required for the punch is relatively small, and there is sufficient metal powder in the hopper 17, the metal powder in the hopper 17 can quickly fill the forming cavity of the lower die holder 2 under the action of gravity. After the linear actuator 2 drives the two hoppers 17 to reset, the metal powder in the lower die holder 2 can be pressed by the upper die holder 1.

[0039] Furthermore, the material replenishment unit includes two storage bins 18, which are respectively set on one side of the fixed platform 5 and located above the hopper 17. The storage bins 18 are connected to the mounting platform 13 by a bracket 19. Both the upper and lower ends of the storage bins 18 are open and rectangular. The lower opening of the storage bin 18 is the same size as the upper opening of the hopper 17 and is aligned. An extension plate 20 is provided on one side of the hopper 17, and a reinforcing plate 21 is provided between the extension plate 20 and the hopper 17.

[0040] The interior of the storage bin 18 is used to store metal powder. When the upper opening of the hopper 17 leaves the lower opening of the storage bin 18, the extension plate 20 on the hopper 17 can seal the lower opening of the storage bin 18, thereby preventing the metal powder in the storage bin 18 from flowing out. The reinforcing plate 21 can improve the stability of the extension plate 20, so that the extension plate 20 can stably seal the lower opening of the storage bin 18.

[0041] The storage box 18, hopper 17, extension plate 20 and reinforcing plate 21 are all made of metal sheet. When the upper die holder 1 extrudes the metal powder in the lower die holder 2, the upper die holder 1 moves downward at a speed of about 30 mm / s. That is, the lower die holder 2 moves slowly during operation and will not produce strong vibration. The upper opening of the hopper 17 can always be in contact with the lower opening of the storage box 18. Even if a small amount of powder leaks, it can be cleaned, packaged and reused later.

[0042] The following steps are included in the manufacturing of high-speed steel punches:

[0043] a. Feed high-speed steel powder into storage bin 18, with a powder particle size of 5-15μm;

[0044] b. High-speed steel powder falls into hopper 17, and then hopper 17 is pushed to the position of lower mold base 2 by linear brake 15. Some of the high-speed steel powder in hopper 17 enters the forming cavity of lower mold base 2. Then, hopper 17 is reset and storage tank 18 continues to replenish high-speed steel powder into hopper 17.

[0045] c. After the hopper 17 is reset, start the hydraulic pump and then push the two lower die holders 2 downward. The pressing pressure should be sufficient to press the two punches simultaneously. When the lower die holder 2 moves downward to the lowest position of the predetermined position, hold for 2-5 seconds to ensure that the high-speed steel powder is fully compressed.

[0046] d. After the pressure holding is completed, the upper mold base 1 moves upward to complete the reset;

[0047] e. The output end of the linear brake 9 starts and pushes the two round rods 11 upward, pushing the punch out of the forming cavity of the lower mold base 2 about 2 / 3 of the height. The operator removes the punch from the forming cavity, and then the linear brake 9 drives the round rods 11 to reset.

[0048] f. Then, high-speed steel powder is fed back into the die holder 2 through the hopper 17 to continue production.

[0049] The hydraulic pump, linear brake 19, and linear brake 215 are all controlled by a PLC controller, meaning they operate according to a set program. Operators need to cooperate with the program, and an emergency stop button is provided to handle emergencies.

[0050] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A punch forming device, characterized in that, include: Upper mold base; Lower mold base; The extrusion section, wherein both the upper die holder and the lower die holder are disposed on the extrusion section, the extrusion section being used to extrude the upper die holder into the lower die holder; The ejector section is disposed on the extrusion section. The lower die base has a forming cavity inside. Both the upper and lower ends of the forming cavity are open. The ejector section is used to close the lower opening of the forming cavity and can push the formed punch in the forming cavity upward from the forming cavity. A filling section, which is used to feed powder into the forming cavity of the lower mold base; The feeding section is used to replenish powder into the filling section.

2. The punch forming apparatus according to claim 1, characterized in that, The extrusion section includes a base, two lower die holders, and two mounting cavities for accommodating the lower die holders on the base. The base has an internal movable cavity communicating with the mounting cavities. A fixed platform is provided above the base, and the fixed platform is connected to the base via a column. The section also includes a slide, which is slidably connected to the column. A hydraulic cylinder is provided on the fixed platform, and the output end of the hydraulic cylinder passes through the fixed platform and is fixedly connected to the slide. Two upper die holders are provided, and the two upper die holders are located on the lower surface of the slide and are positioned to match the lower die holders.

3. The punch forming apparatus according to claim 2, characterized in that, The pushing part includes a linear actuator 1 disposed inside the base. The output end of the linear actuator 1 is provided with a horizontal plate. Both ends of the horizontal plate are respectively provided with round rods. The upper end of the round rods is located inside the forming cavity. A through hole is opened on the base below the movable cavity. The lower end of the round rods is located inside the through hole. A reinforcing block is provided on the horizontal plate outside the round rods.

4. The punch forming apparatus according to claim 3, characterized in that, The filling part includes a mounting platform disposed on one side of the base. A mounting frame is disposed on the mounting platform. A second linear actuator is disposed on the mounting frame. A crossbar is disposed at the output end of the second linear actuator. A hopper is disposed at both ends of the crossbar. The upper and lower ends of the hopper are open and rectangular. The lower end of the hopper can move along the upper surface of the mounting platform and the upper surface of the base.

5. The punch forming apparatus according to claim 4, characterized in that, The feeding unit includes two storage boxes, which are respectively set on one side of the fixed platform and above the hopper. The storage boxes are connected to the mounting platform by a bracket. Both the upper and lower ends of the storage boxes are open and rectangular. The lower opening of the storage box is the same size as the upper opening of the hopper and is aligned. An extension plate is provided on one side of the hopper, and a reinforcing plate is provided between the extension plate and the hopper.

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