Feeding device for Kovar alloy injection molding

Abstract

The utility model relates to the technical field of metal powder forming, and particularly discloses a feeding device for Kovar alloy injection forming, which comprises a feeding machine body, the hopper mechanism comprises a hopper and a discharging barrel connected to the bottom of the hopper; the feeding mechanism is installed on the feeding machine body and comprises a positioning strip and a feeding hole which is formed in the positioning strip and can be communicated with the discharging barrel, and one side of the positioning strip is connected with a rack; the horizontal adjusting mechanism is used for adjusting the hopper mechanism to move and switch the position on the positioning strip; the hopper mechanism is used for temporarily storing kovar alloy materials, the discharging barrel is accurately in butt joint with the feeding hole, the sealing performance of material conveying is guaranteed, the position of the hopper mechanism can be switched after feeding is finished, when the position is switched, the driving mechanism drives the gear ring to rotate, the arc-shaped strip drives the inclined deflector rod to rotate, the materials can be scattered, and the material conveying efficiency is improved. The problems of easy segregation, bridging and blockage of feed in the conveying process are solved, and continuous and uniform feeding can be carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder forming, in particular to a feeding device for Kovar alloy injection molding. Background Art

[0002] Kovar alloy, due to its thermal compatibility and sealing reliability, has become a key structural material for optical communication module components. Traditional machining of complex micro-components results in low machining efficiency, material waste exceeding 50%, and easy deformation. Furthermore, Kovar alloy's high hardness leads to rapid tool wear, resulting in high unit costs. However, the MIM process (metal injection molding) enables the formation of complex three-dimensional structures, making it suitable for mass production of micro-components. Kovar alloy is mixed with other powders and granulated, then fed into a feeder for subsequent injection molding.

[0003] The existing patent announcement number CN222919641U discloses a feeding mechanism for injection molding of metal products, which includes a storage box, a feeding port is provided on the storage box, a hollow shaft is rotatably connected in the storage box, a motor is fixed to the upper end of the hollow shaft, the motor is fixedly connected to the storage box, a hollow rod is fixed to the lower end of the hollow shaft, the hollow rod is communicated with the hollow shaft, a plurality of dust suction ports are provided at the lower end of the hollow rod, a sealing mechanism is provided in the hollow rod, a scraping rod is fixed to the lower end of the hollow rod, an exhaust mechanism is provided on the hollow shaft, a discharge pipe is fixed to the lower end of the storage box, and a switch mechanism is provided on the discharge pipe; by installing a hollow round block, the rotation of the hollow round block is realized by a driving mechanism, so that the two notches on the hollow round block correspond to the two notches on the ring, so that metal powder can be discharged, and when the two notches on the hollow round block are staggered with the two notches on the ring, the metal powder can be stopped from discharging.

[0004] The above-mentioned feeding mechanism can perform intermittent feeding, but if the segregation and bridging phenomena during material transportation are not handled in time, it will affect the subsequent discharge. In order to solve the above problems, a feeding device for Kovar alloy injection molding is proposed. Utility Model Content

[0005] The purpose of the present utility model is to provide a feeding device for Kovar alloy injection molding to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A feeding device for Kovar alloy injection molding, comprising a feeding body; and

[0008] A hopper mechanism, comprising a hopper and a discharge cylinder connected to the bottom of the hopper;

[0009] A feeding mechanism mounted on the feeding body comprises a positioning bar and a feeding hole provided on the positioning bar and capable of communicating with the discharge cylinder, wherein one side of the positioning bar is connected to a rack;

[0010] The horizontal adjustment mechanism is used to adjust the hopper mechanism to move and switch positions on the positioning bar;

[0011] The material shifting mechanism includes an oblique shifting rod provided in the hopper, an arcuate bar connected to the bottom of the oblique shifting rod, and a gear ring rotatably connected to the discharge barrel, wherein one side of the bottom end of the arcuate bar is connected to the annular inner wall of the gear ring; and

[0012] The driving mechanism installed on one side of the discharge barrel is used to drive the gear ring to rotate.

[0013] In an optional solution: the driving mechanism includes a protective box connected to one side of the discharge barrel, a transmission column rotatably connected to the protective box, a driving gear connected to the transmission column and engaged with the gear ring, and a toggle gear connected to the bottom end of the transmission column and engaged with the rack.

[0014] In an optional solution: the bottom of the feeding mechanism away from the horizontal adjustment mechanism is connected to the impurity discharge pipe, and the top of the positioning bar is provided with a circular hole connected to the impurity discharge pipe.

[0015] In an optional solution: the horizontal adjustment mechanism includes a moving seat slidably mounted on the positioning bar and a hydraulic push rod A mounted on the positioning bar, the power telescopic end of the hydraulic push rod A is connected to one side of the moving seat, the discharge barrel is mounted on the top of the moving seat, and the bottom of the discharge barrel slides with the top of the positioning bar.

[0016] In an optional solution: the oblique lever is arranged on one side of the conical inner wall of the hopper, a plurality of extension claws are connected to both sides of the oblique lever, and one side of the arc strip is slidably engaged with the inner wall of the discharge barrel.

[0017] In an optional solution, two groups of the oblique shift rods are provided.

[0018] In an optional solution: the feed hole is away from the hydraulic push rod A and is placed on the side wall of the positioning bar as the driving side, and the rack is installed on the driving side.

[0019] In an optional solution: the feeding machine body includes a machine base and an injection barrel connected to one side of the machine base, and the positioning bar is connected to the top of the machine base near one end of the injection barrel.

[0020] In an optional solution: it also includes a seat body, the bottom of the feeding body is connected to the guide seat, the top of the seat body is connected to a guide rail that slides with the guide seat, and the side of the seat close to the injection barrel is connected to two groups of hydraulic push rods B.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The hopper mechanism in the utility model is used for temporarily storing Kovar alloy materials. The discharge barrel and the feed hole are precisely docked to ensure the sealing of material transportation. The hopper mechanism can switch positions after the feeding is completed. When switching positions, the driving mechanism drives the gear ring to rotate, and the arc-shaped bar drives the inclined lever to rotate, which can break up the material, solve the problems of easy segregation, bridging and blockage during the feeding process, and can carry out continuous and uniform feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the present utility model.

[0024] Figure 2 It is a schematic diagram of the partial structure of the feeding body in the utility model.

[0025] Figure 3 It is a structural diagram of the hopper mechanism in the utility model.

[0026] Figure 4 This is a structural diagram of the drive mechanism setting side in the utility model.

[0027] Figure 5 It is a structural diagram of the horizontal adjustment mechanism in the utility model.

[0028] Figure 6 It is a structural diagram of the driving mechanism in the utility model.

[0029] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the utility model.

[0030] In the figure: 1. Feeding body; 2. Hopper mechanism; 3. Feeding mechanism; 4. Horizontal adjustment mechanism; 5. Material shifting mechanism; 6. Driving mechanism; 7. Base body; 101. Machine base; 102. Guide seat; 103. Guide rail; 104. Injection barrel; 105. Hydraulic push rod B; 201. Hopper; 202. Discharge barrel; 301. Positioning bar; 302. Feeding hole; 303. Discharge pipe; 304. Rack; 401. Moving base; 402. Hydraulic push rod A; 501. Oblique shifting rod; 502. Extension claw; 503. Arc bar; 504. Gear ring; 601. Protective box; 602. Transmission column; 603. Drive gear; 604. Shifting gear. DETAILED DESCRIPTION

[0031] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 7 In this embodiment, the feeding device for Kovar alloy injection molding includes a feeding body 1;

[0034] The hopper mechanism 2 includes a hopper 201 and a discharge barrel 202 connected to the bottom of the hopper 201; the hopper 201 is a conical structure for temporarily storing the Kovar alloy material, and the material can be discharged from the bottom of the discharge barrel 202;

[0035] The feeding mechanism 3 mounted on the feeding body 1 includes a positioning bar 301 and a feeding hole 302 provided on the positioning bar 301 and connected to the discharge barrel 202. One side of the positioning bar 301 is connected to a rack 304. The discharge barrel 202 and the feeding hole 302 are precisely docked to ensure the sealing of material transportation and reduce dust leakage.

[0036] The horizontal adjustment mechanism 4 is used to adjust the hopper mechanism 2 to move and switch positions on the positioning bar 301; the positioning bar 301 serves as the installation reference for the horizontal adjustment mechanism 4 and the hopper mechanism 2, and the hopper mechanism 2 can switch positions after feeding is completed;

[0037] The material shifting mechanism 5 includes an oblique shifting rod 501 disposed within the hopper 201, an arcuate bar 503 connected to the bottom of the oblique shifting rod 501, and a gear ring 504 rotatably connected to the discharge barrel 202. The bottom end of the arcuate bar 503 is connected to the inner annular wall of the gear ring 504. Kovar alloy material is typically a powder or granular mixture. During gravity drop, it is prone to segregation due to differences in particle size and density, resulting in uneven feed composition and affecting the performance of the final formed part. The oblique shifting rod 501 can disperse the material.

[0038] And the driving mechanism 6 installed on one side of the discharge cylinder 202 is used to drive the gear ring 504 to rotate.

[0039] See also Figure 6 and Figure 7 The driving mechanism 6 includes a protective box 601 connected to one side of the discharge barrel 202, a transmission column 602 rotatably connected to the protective box 601, a driving gear 603 connected to the transmission column 602 and meshing with the gear ring 504, and a toggle gear 604 connected to the bottom end of the transmission column 602 and meshing with the rack 304;

[0040] Specifically, the hopper mechanism 2 moves horizontally after feeding, the gear 604 is driven to contact the rack 304, the transmission column 602 drives the driving gear 603 to rotate, and when the gear ring 504 rotates, the arc bar 503 drives the inclined lever 501 to rotate, which can break up the material and solve the problem of easy segregation, bridging and blockage of the feeding during the transportation process.

[0041] See also Figure 5 The bottom of the feeding mechanism 3 away from the horizontal adjustment mechanism 4 is connected to the impurity discharge pipe 303, and the top of the positioning bar 301 is provided with a circular hole connected to the impurity discharge pipe 303;

[0042] Specifically, the impurity discharge pipe 303 can be connected to the bottom of the discharge barrel 202 through the circular hole on the top of the positioning bar 301, and can be used to subsequently discharge excess materials in the hopper 201.

[0043] See also Figure 5 The horizontal adjustment mechanism 4 includes a moving seat 401 slidably mounted on the positioning bar 301 and a hydraulic push rod A402 mounted on the positioning bar 301. The power telescopic end of the hydraulic push rod A402 is connected to one side of the moving seat 401. The discharge cylinder 202 is mounted on the top of the moving seat 401. The bottom of the discharge cylinder 202 is slidably matched with the top of the positioning bar 301.

[0044] Specifically, the horizontal position of the movable base 401 can be adjusted by the hydraulic push rod A402. The sliding cooperation between the movable base 401 and the positioning bar 301 reduces friction resistance and prolongs the service life of the mechanism. The horizontal position of the hopper mechanism 2 can be quickly switched and moved sideways in time after feeding.

[0045] See also Figure 3 and Figure 7 The oblique lever 501 is arranged on one side of the conical inner wall of the hopper 201, and a plurality of extension claws 502 are connected to both sides of the oblique lever 501. One side of the arc strip 503 is slidably matched with the inner wall of the discharge barrel 202; further, the oblique lever 501 is provided with two groups;

[0046] Specifically, the decentralized design of the extension claws 502 can improve the material breaking effect and ensure that the material is discharged at a stable flow rate.

[0047] See also Figure 4 The feeding hole 302 is away from the hydraulic push rod A402 and is located on the side wall of the positioning bar 301 as the driving side, and the rack 304 is installed on the driving side;

[0048] Specifically, when the discharge cylinder 202 corresponds to the feed hole 302 , the rack 304 does not contact the shifting gear 604 , and the horizontal position of the hopper mechanism 2 after feeding is switched, and the shifting gear 604 contacts the rack 304 .

[0049] See also Figure 2 The feeding body 1 includes a base 101 and an injection barrel 104 connected to one side of the base 101, and the positioning bar 301 is connected to the top of the base 101 near one end of the injection barrel 104; the feeding body 1 serves as the basic bearing structure of the main structure of the device.

[0050] See also Figure 1 , also includes a base body 7, the bottom of the feeding body 1 is connected to the guide seat 102, the top of the base body 7 is connected to a guide rail 103 that slides with the guide seat 102, and the side of the base 101 close to the injection barrel 104 is connected to two groups of hydraulic push rods B105; specifically, the injection barrel 104 receives the material fed in and completes the final injection molding.

[0051] The working principle of this utility model is:

[0052] The hopper 201 temporarily stores the Kovar alloy material, and the material can be discharged from the bottom of the discharge cylinder 202. The discharge cylinder 202 corresponds to the feed hole 302, and the material can be discharged under the action of gravity. After feeding, the hopper mechanism 2 moves horizontally, and the gear 604 contacts the rack 304. The transmission column 602 drives the driving gear 603 to rotate. When the gear ring 504 rotates, it drives the inclined lever 501 to rotate through the arc bar 503, which can break up the material and solve the problems of easy segregation, bridging and blockage during the feeding process.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A feeding device for Kovar alloy injection molding, comprising a feeding body (1); It is characterized by: Also includes A hopper mechanism (2), comprising a hopper (201) and a discharge cylinder (202) connected to the bottom of the hopper (201); A feeding mechanism (3) mounted on the feeding body (1), comprising a positioning bar (301) and a feeding hole (302) provided on the positioning bar (301) and capable of communicating with the discharge barrel (202), wherein one side of the positioning bar (301) is connected to a rack (304); A horizontal adjustment mechanism (4) for adjusting the hopper mechanism (2) to move and switch positions on the positioning bar (301); A material shifting mechanism (5), comprising an oblique shifting rod (501) disposed in the hopper (201), an arcuate bar (503) connected to the bottom of the oblique shifting rod (501), and a toothed ring (504) rotatably connected to the discharge barrel (202), wherein one side of the bottom end of the arcuate bar (503) is connected to the annular inner wall of the toothed ring (504); and The driving mechanism (6) installed on one side of the discharge barrel (202) is used to drive the gear ring (504) to rotate.

2. The feeding device for Kovar alloy injection molding according to claim 1, characterized in that: The driving mechanism (6) comprises a protective box (601) connected to one side of the discharge barrel (202), a transmission column (602) rotatably connected to the protective box (601), a driving gear (603) connected to the transmission column (602) and meshing with the gear ring (504), and a toggle gear (604) connected to the bottom end of the transmission column (602) and meshing with the rack (304).

3. The feeding device for Kovar alloy injection molding according to claim 1, characterized in that: The bottom of the feeding mechanism (3) at one end away from the horizontal adjustment mechanism (4) is connected to a debris discharge pipe (303), and a circular hole communicating with the debris discharge pipe (303) is provided on the top of the positioning bar (301).

4. The feeding device for Kovar alloy injection molding according to claim 3, characterized in that: The horizontal adjustment mechanism (4) includes a movable seat (401) slidably mounted on the positioning bar (301) and a hydraulic push rod A (402) mounted on the positioning bar (301), wherein the power telescopic end of the hydraulic push rod A (402) is connected to one side of the movable seat (401), the discharge barrel (202) is mounted on the top of the movable seat (401), and the bottom of the discharge barrel (202) is slidably matched with the top of the positioning bar (301).

5. The feeding device for Kovar alloy injection molding according to claim 1, characterized in that: The oblique lever (501) is arranged on one side of the conical inner wall of the hopper (201), and a plurality of extension claws (502) are connected to both sides of the oblique lever (501), and one side of the arc-shaped bar (503) is in sliding engagement with the inner wall of the discharge barrel (202).

6. The feeding device for Kovar alloy injection molding according to claim 5, characterized in that: The oblique shifting rods (501) are provided in two groups.

7. The feeding device for Kovar alloy injection molding according to claim 4, characterized in that: The feeding hole (302) is located away from the hydraulic push rod A (402) and is located on the side wall of the positioning bar (301) as the driving side, and the rack (304) is installed on the driving side.

8. The feeding device for Kovar alloy injection molding according to claim 1, characterized in that: The feeding machine body (1) comprises a machine base (101) and an injection barrel (104) connected to one side of the machine base (101), and the positioning bar (301) is connected to the top of the machine base (101) near one end of the injection barrel (104).

9. The feeding device for Kovar alloy injection molding according to claim 8, characterized in that: The feeding machine body (1) further comprises a base body (7), wherein the bottom of the feeding machine body (1) is connected to a guide seat (102), the top of the base body (7) is connected to a guide rail (103) that is slidably matched with the guide seat (102), and the side of the base (101) close to the injection barrel (104) is connected to two groups of hydraulic push rods B (105).

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