Pushing and feeding mechanism for powder forming machine

Abstract

The invention relates to a material pushing mechanism for a powder forming machine. A pushing and feeding mechanism used on a powder forming machine comprises a working table top and a feeding box sliding on the working table top in a reciprocating mode, and further comprises an electric crank sliding block mechanism used for driving the feeding box to move in a reciprocating mode, and the electric crank sliding block mechanism is in transmission connection with the feeding box. Two pressing plates located on the two sides of the feeding box are detachably connected to the working table top, and the feeding box slides in the area between the two pressing plates. A pressing bolt is in threaded connection with the working table top, a through hole penetrating through the pressing bolt is formed in the pressing plate, and a spring clamped between the head of the pressing bolt and the pressing plate is arranged on the pressing bolt in a sleeving manner; a supporting bolt is further in threaded connection with the working table top, and the head of the supporting bolt is located between the working table top and the pressing plate. Cam bearing followers are installed on the two sides of the feeding box and arranged on the back of the pressing plate in a rolling mode. Powder waste caused by fluctuation of the feeding box is reduced.

Description

Technical Field

[0001] This invention relates to the field of powder forming equipment technology, specifically to a feeding mechanism. Background Technology

[0002] Powder molding is one of the basic methods of material production. Its purpose is to use high pressure to shape loose powder into semi-finished or finished products with specific shapes, sizes, and strengths. Compared to casting, powder molding requires lower temperatures, preventing high-temperature oxidation and volatilization of the material. Powder extrusion molding is a powder forming method that uses a pressurized punch to expel powder from a mold of a specific shape, forming it into parts of a specific shape under high pressure.

[0003] The feeding mechanism of existing powder molding machines is generally driven by a cylinder, which drives the reciprocating motion of the feeding box. Since the cylinder requires air passage, some factories need to purchase corresponding compressed air equipment, which is costly just for the feeding mechanism. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a feeding mechanism for use in a powder forming machine to solve at least one of the above technical problems.

[0005] To achieve the above objectives, the present invention provides a feeding mechanism for a powder forming machine, including a worktable and a feeding box that slides back and forth on the worktable. The invention is characterized by further including an electric crank-slider mechanism for driving the feeding box to reciprocate, the electric crank-slider mechanism being connected to the feeding box in a transmission manner.

[0006] Two pressure plates are detachably connected to the workbench on both sides of the feeding box, and the feeding box slides in the area between the two pressure plates;

[0007] A pressing bolt is threaded onto the workbench surface, and a through hole is provided on the pressure plate for the pressing bolt to pass through. A spring is fitted onto the pressing bolt and clamped between the head of the pressing bolt and the pressure plate.

[0008] The workbench surface is also threaded with a support bolt, the head of which is located between the workbench surface and the pressure plate.

[0009] Cam bearing followers are installed on both sides of the feeding box, and the cam bearing followers are rolled on the back of the pressure plate.

[0010] This invention utilizes an electric crank-slider mechanism to allow the feeding box to reciprocate on the worktable. The pressing bolt applies downward force, which is transmitted to the pressure plate. The supporting bolts provide balance and prevent excessive tilting of the pressure plate. The addition of springs makes the downward pressure more stable, reducing powder waste caused by fluctuations in the feeding box. The cam bearing follower changes the sliding between the feeding box and the pressure plate to rolling, preventing frictional vibration.

[0011] More preferably, at least four pressing bolts are installed along the length of the pressure plate.

[0012] More preferably, the pressure plate is equipped with support bolts that match the number of pressing bolts along its length.

[0013] More preferably, the support bolt is located on the side of the pressure plate away from the feeding box.

[0014] More preferably, the electric crank-slider mechanism includes a motor, the power output shaft of which is driven to a rocker arm, and the rocker arm is driven to the feeding box via a connecting rod.

[0015] The connecting rod includes a drive shaft and a U-shaped frame that are fixedly connected. The drive shaft is hinged to the end of the rocker arm, and the open side of the U-shaped frame is hinged to the upper and lower ends of the feeding box.

[0016] It facilitates the reciprocating drive of the feeding box.

[0017] More preferably, the drive shaft portion has a clearance hole and mounting holes arranged along the length direction of the drive shaft portion, and the mounting holes and the clearance hole are interconnected.

[0018] The end of the rocker arm passes through the clearance hole, and the rocker arm is connected to the transmission rod by a bolt passing through the mounting hole.

[0019] More preferably, a mounting frame is installed on the workbench, the motor is mounted on the mounting frame, the power output shaft of the motor extends out of the motor, and the motor body and the rocker arm are respectively located at the upper and lower ends of the mounting frame;

[0020] An arc-shaped mounting bracket is installed on the mounting frame, and an arc-shaped guide groove is installed on the arc-shaped mounting bracket. A sensor for sensing the swing of the joystick is installed in the arc-shaped guide groove.

[0021] It facilitates the sensing of the joystick's rotation origin via a sensor.

[0022] More preferably, the feeding box includes a U-shaped groove and a box structure connected on the left and right sides, the lower side of the box structure is open, the upper side of the box structure is connected to a powder feeding pipe, and the box structure is hinged to the connecting rod.

[0023] The cam bearing follower is connected to the opposite side of the U-shaped groove.

[0024] The bottom of the U-shaped groove, away from the box structure, has a rectangular notch.

[0025] More preferably, a proximity switch is installed on the box structure.

[0026] It facilitates sensing the extreme sliding position of the feed box.

[0027] More preferably, mounting flanges are installed at the four corners of the workbench.

[0028] More preferably, the workbench surface has a rectangular hole, and when the feeding box reciprocates, it switches between engaging with the rectangular hole and not engaging with the rectangular hole.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] This invention replaces the cylinder-driven structure with an electric mechanism, thus avoiding the problem of significant resource waste caused by purchasing an air supply device for a single device;

[0031] This invention solves the problem of inconsistent movement speed of cylinders due to air pressure fluctuations, which leads to irregular feeding times.

[0032] This invention uses a spring to limit the movement of the feeding box, preventing powder spillage and waste. It prevents the feeding box from detaching from the table surface due to upward force during retraction, thus improving material utilization. The spring's deformation buffer reduces fluctuations in the force applied to the feeding box. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a specific embodiment 1 of the present invention;

[0034] Figure 2 This is a partial cross-sectional view of the pressure plate in specific embodiment 1 of the present invention;

[0035] Figure 3 This is a schematic diagram of a specific embodiment 1 of the present invention;

[0036] Figure 4 This is a schematic diagram of a specific embodiment 1 of the present invention;

[0037] Figure 5 This is a schematic diagram of a specific embodiment 1 of the present invention.

[0038] In the diagram: 1 is the motor, 2 is the rocker arm, 3 is the connecting rod, 4 is the pressure plate, 5 is the feeding box, 6 is the pressing bolt, 7 is the mounting bracket, 8 is the cam bearing follower, 9 is the sensor, 10 is the spring, and 11 is the support bolt. Detailed Implementation

[0039] The present invention will now be further described with reference to the accompanying drawings.

[0040] See Figures 1 to 5 Specific Embodiment 1: A feeding mechanism for a powder forming machine includes a worktable and a feeding box 5 that slides back and forth on the worktable. It also includes an electric crank-slider mechanism for driving the feeding box 5 to reciprocate, and the electric crank-slider mechanism is connected to the feeding box 5. Two pressure plates 4 located on both sides of the feeding box 5 are detachably connected to the worktable, and the feeding box 5 slides between the two pressure plates 4. A pressing bolt 6 is threadedly connected to the worktable, and a through hole is opened on the pressure plate 4 to pass through the pressing bolt 6. A spring 10 is sleeved on the pressing bolt 6 and clamped between the head of the pressing bolt 6 and the pressure plate 4. A support bolt 11 is also threadedly connected to the worktable, and the head of the support bolt 11 is located between the worktable and the pressure plate 4. Cam bearing followers 8 are installed on both sides of the feeding box 5, and the cam bearing followers 8 are rolled on the back of the pressure plate 4. This invention utilizes an electric crank-slider mechanism to allow the feeding box 5 to reciprocate on the worktable. The pressing bolt 6 applies a downward force, which is transmitted to the pressure plate 4. The supporting bolt 11 provides balance and prevents the pressure plate 4 from tilting excessively. The addition of the spring 10 makes the downward pressure more stable and reduces powder waste caused by fluctuations in the feeding box 5. The cam bearing follower 8 changes the sliding between the feeding box 5 and the pressure plate 4 to rolling, preventing frictional vibration.

[0041] At least four pressing bolts 6 are installed along the length of the pressure plate 4. Support bolts 11, matching the number of pressing bolts 6, are also installed along the length of the pressure plate 4. The support bolts 11 are located on the side of the pressure plate 4 furthest from the feeding box 5.

[0042] The electric crank-slider mechanism includes a motor 1, whose power output shaft is connected to a rocker arm 2. The rocker arm 2 is connected to a feeding box 5 via a connecting rod 3. The connecting rod 3 includes a fixedly connected transmission shaft and a U-shaped frame. The transmission shaft is hinged to the end of the rocker arm 2, and the open side of the U-shaped frame is hinged to the upper and lower ends of the feeding box 5. This facilitates the reciprocating drive of the feeding box 5.

[0043] The drive shaft has a clearance hole and mounting holes arranged along the length of the drive shaft. The mounting holes and clearance holes are interconnected. The end of the rocker arm 2 passes through the clearance hole, and the rocker arm 2 is connected to the drive rod by a bolt passing through the mounting hole.

[0044] A mounting bracket 7 is installed on the workbench, and a motor 1 is mounted on the mounting bracket 7. The power output shaft of the motor 1 extends out of the motor 1. The motor body and the rocker arm 2 are located at the upper and lower ends of the mounting bracket 7, respectively. An arc-shaped mounting frame 7 is installed on the mounting bracket 7, and an arc-shaped guide groove is installed on the arc-shaped guide groove. A sensor 9 for sensing the swing of the rocker arm 2 is installed in the arc-shaped guide groove. This facilitates the sensing of the rotation origin of the rocker arm 2 through the sensor.

[0045] The feeding box 5 includes a U-shaped trough and a box structure connected on the left and right. The box structure has an opening on the lower side and a powder feeding pipe connected to the upper side. The box structure is hinged to the connecting rod 3. A cam bearing follower 8 is connected to the opposite side of the U-shaped trough. A rectangular notch is opened at the bottom of the U-shaped trough away from the box structure.

[0046] A proximity switch is installed on the box structure to facilitate sensing the sliding limit position of the feed box 5.

[0047] Mounting flanges are installed at the four corners of the workbench.

[0048] A rectangular hole is provided on the worktable. As the feeding box 5 reciprocates, it switches between engaging and not engaging the rectangular hole. When the box structure slides to the worktable and blocks the lower opening of the box structure, the powder feeding pipeline delivers powder into the box structure. The feeding box slides, and when the lower opening of the box structure is aligned with the rectangular hole, the powder inside the box structure is delivered to the rectangular hole.

[0049] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A push feed mechanism for use on a powder forming machine comprising a table surface and a feed shoe reciprocally slidable on the table surface, characterised in that, Further comprising an electric crank slider mechanism for driving the feeding box to reciprocate, the electric crank slider mechanism being drivingly connected with the feeding box; Two pressing plates are detachably connected on the workbench surface and located on both sides of the feeding box, and the feeding box slides in the area between the two pressing plates; A lower pressing bolt is threadedly connected on the workbench surface, a through hole is formed on the pressing plate and passes through the lower pressing bolt, and a spring is sleeved on the lower pressing bolt and clamped between the head of the lower pressing bolt and the pressing plate; A supporting bolt is further threadedly connected on the workbench surface, and the head of the supporting bolt is located between the workbench surface and the pressing plate; Cam bearing followers are installed on both sides of the feeding box and roll on the back of the pressing plate.

2. A pusher feed mechanism for use in a powder forming machine according to claim 1, characterized in that: At least four lower pressing bolts are installed on the length direction of the pressing plate.

3. A push feed mechanism for use in a powder molding machine according to claim 1, characterized in that: The number of the supporting bolts matches the number of the lower pressing bolts and are installed on the length direction of the pressing plate.

4. A push feed mechanism for use in a powder molding machine according to claim 1, characterized in that: The supporting bolts are located on the side of the pressing plate away from the feeding box.

5. A push feed mechanism for use in a powder molding machine according to claim 1, wherein: The electric crank slider mechanism comprises a motor, the power output shaft of the motor is drivingly connected with a rocker, and the rocker is drivingly connected with the feeding box through a connecting rod; The connecting rod comprises a fixedly connected transmission shaft part and a U-shaped frame part, the transmission shaft part is hinged with the end of the rocker, and the opening side of the U-shaped frame part is hinged with the upper and lower ends of the feeding box.

6. A pusher feed mechanism for a powder forming machine as defined in claim 5, wherein: An avoiding hole and an installation hole arranged along the length direction of the transmission shaft part are formed on the transmission shaft part, and the installation hole and the avoiding hole are communicated with each other; The end of the rocker passes through the avoiding hole, and the rocker and the transmission rod part are connected through a bolt passing through the installation hole.

7. A pusher feed mechanism for use in a powder forming machine according to claim 6, characterized in that: A mounting bracket is installed on the workbench surface, the motor is installed on the mounting bracket, the power output shaft of the motor extends out of the motor, and the body of the motor and the rocker are respectively located on the upper and lower ends of the mounting bracket; An arc-shaped mounting bracket is installed on the mounting bracket, an arc-shaped guide groove is installed on the arc-shaped mounting bracket, and a sensor for sensing the swing of the rocker is installed in the arc-shaped guide groove.

8. A push feed mechanism for use in a powder molding machine according to claim 1, characterized in that: The feeding box comprises a U-shaped groove body and a box body structure arranged side by side, the lower side of the box body structure is open, the upper side of the box body structure is connected with a powder feeding pipe, and the box body structure is hinged with the connecting rod; The opposite sides of the U-shaped groove body are connected with the cam bearing followers; A rectangular notch is formed on the groove bottom of the U-shaped groove body away from the box body structure.

9. A pusher feed mechanism for use in a powder forming machine according to claim 8, characterized in that: A proximity switch is installed on the box body structure.

10. A push feed mechanism for use in a powder molding machine according to claim 1, characterized in that: A rectangular hole is formed on the workbench surface, and the feeding box is switched between abutting and not abutting the rectangular hole during reciprocation.

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