Particle feeding system for lubricating punch of die-casting machine

Abstract

The utility model relates to the technical field of die-casting machine punch lubrication, and particularly discloses a particle feeding system for die-casting machine punch lubrication, which comprises a feeding hopper, a feeding pipe, a blanking mechanism, a mounting seat, a metering block and a metering cylinder, the mounting seat is connected with the feeding hopper and is provided with a sliding groove, a feeding hole, an air inlet hole and a discharging hole, the metering air cylinder is connected with the mounting seat, the metering block slides in the sliding groove and is connected with a piston rod of the metering air cylinder, a metering hole is formed in the metering block, the air inlet hole is connected with an air inlet pipe, and the air inlet pipe is connected with the discharging hole. And the feeding pipe is connected with the discharging hole and the blanking mechanism, and is matched with a PLC (Programmable Logic Controller), a touch screen and special control software to quickly set the number of times of left and right actions of the metering cylinder in a lubricating circulation of the die-casting machine. And too few particles are easy to block a punch of a die-casting machine or too many particles are easy to cause the product quality problem.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting machine punch lubrication, in particular to a particle feeding system for die-casting machine punch lubrication. Background Art

[0002] The punches in current die-casting machines are poorly lubricated and prone to jamming. The jamming of the punches may cause small waves in the aluminum liquid during its forward movement, causing the air in the pressure chamber to be drawn into the liquid metal. The drawn air is further squeezed and stirred by the liquid metal in the pouring system, and is atomized by the spray of the inner gate to become a mixture of air and liquid metal, filling the mold cavity and eventually forming pores in the casting. Therefore, avoiding the jamming of the punch during operation and ensuring the relative lubrication of the punch are very important for improving the product quality of the die-casting machine. At present, particle lubrication is generally used to lubricate the punches, but the amount of lubricating particles is not accurately controlled and the metering effect is poor. Too few lubricating particles can easily cause the punch to jam. When there are too many lubricating particles, a large amount of particles are not completely burned after the aluminum liquid is poured into the barrel, and the thick smoke caused by it is drawn into the aluminum liquid, which also causes product quality problems. Utility Model Content

[0003] In order to solve the technical problem of inaccurate control of the amount of lubricating particles mentioned above, the utility model provides a particle feeding system for lubricating the punch of a die-casting machine.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A particle feeding system for lubricating a die-casting machine punch comprises a feeding hopper, a metering mechanism, a feeding pipe and a blanking mechanism, wherein the metering mechanism comprises a mounting seat, a metering block and a metering cylinder; the mounting seat is connected to the bottom end of the feeding hopper and is provided with a slide groove, a feeding hole, an air inlet hole and a discharge hole, the metering cylinder is fixedly connected to the mounting seat, the metering block slides in the slide groove and is fixedly connected to the piston rod of the metering cylinder, the metering block is provided with a metering hole, the air inlet hole is fixedly connected to the air inlet pipe, the feeding pipe is fixedly connected to the discharge hole and the blanking mechanism, and the blanking mechanism is connected to a guide pipe.

[0006] Furthermore, the material dropping mechanism includes a material dropping hopper and a connecting pipe. The material dropping hopper is fixedly connected to the feeding pipe and a mounting plate is fixedly arranged inside. An exhaust pipe is fixedly arranged at the center of the mounting plate. An exhaust hole is opened at the top of the material dropping hopper and the bottom is fixedly connected to the connecting pipe.

[0007] Furthermore, an air blowing pipe is obliquely arranged on the connecting pipe.

[0008] Furthermore, a connecting block is fixedly provided on the top of the drop hopper, and a baffle is fixedly connected to the connecting block.

[0009] Furthermore, it also includes a manual quick-lock valve, which includes a quick-lock valve seat, a clamping bolt, a positioning bolt and a movable plate. A connecting seat is fixedly arranged at the bottom end of the feed hopper, and the quick-lock valve seat is provided with a movable groove. The movable plate slides in the movable groove. The clamping bolt passes through the connecting seat and the quick-lock valve seat, and is threadedly connected to the mounting seat. The connecting seat, the top wall of the movable groove, the movable plate and the bottom wall of the movable groove are respectively provided with a first through hole, a second through hole, a third through hole and a fourth through hole. The feed hole is connected to the first through hole, the second through hole, the third through hole and the fourth through hole. Two positioning holes are provided on the movable plate. The positioning bolt passes through the connecting seat and the positioning hole, and is threadedly connected to the quick-lock valve seat.

[0010] Furthermore, the movable plate includes a vertical portion and a horizontal portion, the vertical portion is fixedly connected to the horizontal portion, and the horizontal portion slides in the movable groove.

[0011] Furthermore, it also includes a limiting bolt. A limiting groove is opened on the horizontal part. The limiting bolt passes through the connecting seat and the limiting groove and is threadedly connected to the quick-lock valve seat.

[0012] Furthermore, the number of the clamping bolts is four.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model adopts a metering mechanism to accurately use the particles for lubricating the die-casting machine punch, improve the lubrication effect, and solve the problem that the die-casting machine punch is easily blocked due to inaccurate control of the amount of lubricating particles, or too many lubricating particles affect product quality;

[0015] 2. The utility model adopts a drop hopper to discharge the compressed air for transporting lubricating particles, so as to prevent the particles from not falling into the feed barrel of the die-casting machine, thereby ensuring the lubricating effect of the lubricating particles;

[0016] 3. The utility model adopts a manual quick-lock valve to close the bottom of the feed hopper when repairing the metering mechanism, avoiding the need to empty the feed hopper in order to repair the metering mechanism;

[0017] 4. The utility model adopts an air blowing pipe to clean and cool the guide pipe;

[0018] 5. The utility model adopts PLC controller, touch screen and special software to fully meet the needs of actual production. The touch screen I\0 can check the working status in real time, set the particle dosage more efficiently, and set the action time more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a particle feeding system for lubricating a die-casting machine punch in the utility model;

[0020] Figure 2 for Figure 1 A cross-sectional view of

[0021] Figure 3 for Figure 2 The right bit state diagram of the middle metering block;

[0022] Figure 4 for Figure 2 Top sectional view of the medium quick lock valve seat;

[0023] Figure 5 for Figure 1 Cross-sectional view of the metering mechanism and the manual quick-lock valve;

[0024] Figure 6 for Figure 1 Connection diagram of the middle hold-down bolts;

[0025] Among them, 1-feed hopper, 2-connecting seat, 3-movable plate, 4-metering block, 5-mounting seat, 6-metering cylinder, 7-quick lock valve seat, 8-inlet pipe, 9-clamping bolt, 10-limiting bolt, 11-feeding pipe, 12-dropping hopper, 13-baffle, 14-connecting block, 15-connecting pipe, 16-blowing pipe, 17-second through hole, 18-third through hole, 19-feed hole, 20-metering hole, 21-inlet hole, 22-discharge hole, 23-fourth through hole, 24-mounting plate, 25-exhaust pipe, 26-exhaust hole, 27-slide, 28-limiting groove, 29-clamping hole, 30-limiting threaded hole, 31-positioning hole, 32-first through hole, 33-guide pipe, 34-positioning bolt, 35-movable groove. DETAILED DESCRIPTION

[0026] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0027] Example:

[0028] The specific implementation process of the utility model is as follows: a particle feeding system for lubricating the punch of a die-casting machine, such as Figure 1 , Figure 2 , Figure 3 as well as Figure 5As shown, it includes a feeding hopper 1, a metering mechanism, a feeding pipe 11 and a blanking mechanism, and the metering mechanism includes a mounting seat 5, a metering block 4 and a metering cylinder 6; the mounting seat 5 is connected to the bottom end of the feeding hopper 1, and is provided with a slide groove 27, a feed hole 19, an air inlet hole 21 and a discharge hole 22, the metering cylinder 6 is fixedly connected to the mounting seat 5, the metering block 4 slides in the slide groove 27, and is fixedly connected to the piston rod of the metering cylinder 6, the metering block 4 is provided with a metering hole 20, the air inlet hole 21 is fixedly connected to the air inlet pipe 8, the feeding pipe 11 is fixedly connected to the discharge hole 22 and the blanking mechanism, and the blanking mechanism is connected with a guide tube 33. The guide tube 33 is connected to the feeding port of the die-casting machine, and the air inlet pipe 8 is connected to an air compression conveying device. The mounting seat 5 can be made of mold steel, and the metering block 4 is processed by wire cutting on the mounting seat 5, which ensures both hardness and precision. The volume of the metering hole 20 on the metering block 4 can be divided into multiple models. Small-volume metering holes 20 are used for small-volume die-casting machines, and large-volume metering holes 20 are used for large-volume die-casting machines. The amount of lubricating particles used at one time should be ensured to be less than 5 times that the metering block 4 is required to transport the lubricating particles.

[0029] When lubricating the punch of the die casting machine,

[0030] A. Shot blowing: At this time, the metering block 4 is in the right position, the metering hole 20 is connected to the air inlet hole 21 and the discharge hole 22, the bottom of the feed hole 19 is closed by the metering block 4, the solenoid valve controlling the air inlet pipe 8 is energized, and the compressed air enters the air inlet hole 21, the metering hole 20, and the discharge hole 22. The lubricating particles in the feeding pipe 11 enter the blanking mechanism along with the compressed air. After the blanking mechanism discharges the compressed air, the lubricating particles fall into the feed barrel of the die-casting machine through the guide pipe 33;

[0031] B. Metering: The free end of the piston rod of the metering cylinder 6 will move the metering block 4 to the left in the slide groove 27 until the metering hole 20 is aligned with the feed hole 19, and then the lubricating particles in the hopper 1 will enter the metering hole 20 through the feed hole 19. After the metering hole 20 is filled with lubricating particles, the metering cylinder 6 is started, and the free end of the piston rod of the metering cylinder 6 will move the metering block 4 and the lubricating particles in the metering hole 20 to the right together until the metering hole 20 is aligned with the air inlet hole 21 and the discharge hole 22. The lubricating particles will fall from the discharge hole 22 into the feeding pipe 11 under the action of gravity. The metering cylinder 6 is controlled by the PLC controller, and the PLC controller is connected to the human-computer interactive touch screen. When the amount of lubricated particles to be lubricated at one time is to be adjusted, it is only necessary to set the number of back and forth movements of the piston rod of the metering cylinder 6 on the touch screen, and then the PLC controller outputs the corresponding number of electrical signals of the pneumatic valve that controls the metering cylinder 6, and completes the number of reciprocating movements of the piston rod, thereby increasing or decreasing the number of times the metering block 4 transports the lubricating particles, thereby increasing or decreasing the amount of lubricated particles to be lubricated at one time;

[0032] The amount of particles used for lubrication at one time is equal to the weight of the lubricating particles delivered each time by the metering hole 20 multiplied by the number of times the lubricating particles are delivered by the metering block 4, thereby ensuring the accuracy of the amount of lubricating particles entering the punch of the die-casting machine;

[0033] C. Cleaning: The air blowing pipe 16 is connected to the air supply device to supply gas to the guide tube 33 so as to clean the guide tube 33. Before and after the shot blowing action, the air blowing time is set according to actual needs. It can be set arbitrarily on the touch screen and set to 0 if no air blowing is required.

[0034] like Figure 1 and Figure 2 As shown, the dropping mechanism includes a dropping hopper 12 and a connecting pipe 15. The dropping hopper 12 is fixedly connected to the feeding pipe 11, and a mounting plate 24 is fixedly arranged inside. An exhaust pipe 25 is fixedly arranged at the center of the mounting plate 24. An exhaust hole 26 is opened at the top of the dropping hopper 12, and the bottom end is fixedly connected to the connecting pipe 15.

[0035] The upper end of the hopper 12 is cylindrical, and the bottom end of the connecting pipe 15 is fixedly connected to the guide pipe 33. The outlet of the feeding pipe 11 is connected to the side of the cylinder at the upper end of the hopper 12, and cannot be directly opposite to the center of the cylinder of the hopper 12, so that the compressed air carries the lubricating particles to rotate in the cylinder of the hopper 12. When the compressed air carries the lubricating particles into the cylinder of the hopper 12, the compressed air mixed with the lubricating particles rotates in the hopper 12, and the solenoid valve controlling the air inlet pipe 8 loses power, and the compressed air enters the exhaust pipe 25 and is discharged through the exhaust hole 26. The lubricating particles lose power and fall freely and then fall into the connecting pipe 15, and then fall into the feed barrel of the die-casting machine through the guide pipe 33. The cross-sectional areas of the exhaust pipe 25 and the exhaust hole 26 can be twice or more than the cross-sectional area of ​​the feeding pipe 11, thereby forming a decompression.

[0036] like Figure 1 and Figure 2 As shown, an air blowing pipe 16 is obliquely arranged on the connecting pipe 15 .

[0037] After the lubricating particles enter the feed barrel of the die-casting machine, the blowing pipe 16 can supply gas to the guide pipe 33 for cleaning and cooling. The inclined setting of the blowing pipe 16 can prevent the lubricating particles from entering the blowing pipe 16 and ensure that the gas can enter the guide pipe 33.

[0038] like Figure 1 and Figure 2 As shown, a connection block 14 is fixedly provided on the top of the drop hopper 12 , and a baffle 13 is fixedly connected to the connection block 14 .

[0039] The baffle 13 can prevent external water from entering the drop hopper 12 through the exhaust hole 26 , thereby improving the safety of the drop hopper 12 .

[0040] like Figure 1-Figure 6 As shown, it also includes a manual quick-lock valve, which includes a quick-lock valve seat 7, a clamping bolt 9, a positioning bolt 34 and a movable plate 3. A connecting seat 2 is fixedly provided at the bottom end of the feeding hopper 1. The quick-lock valve seat 7 is provided with a movable groove 35. The movable plate 3 slides in the movable groove 35. The clamping bolt 9 passes through the connecting seat 2 and the quick-lock valve seat 7, and is threadedly connected to the mounting seat 5. The connecting seat 2, the top wall of the movable groove 35, the movable plate 3 and the bottom wall of the movable groove 35 are respectively provided with a first through hole 32, a second through hole 17, a third through hole 18 and a fourth through hole 23. The feed hole 19 is connected to the first through hole 32, the second through hole 17, the third through hole 18 and the fourth through hole 23. Two positioning holes 31 are provided on the movable plate 3. The positioning bolt 34 passes through the connecting seat 2 and the positioning hole 31, and is threadedly connected to the quick-lock valve seat 7.

[0041] When lubricating particles are to be supplied to the feed hole 19, the lubricating particles in the feed hopper 1 will enter the feed hole 19 through the first through hole 32, the second through hole 17, the third through hole 18 and the fourth through hole 23. When the metering mechanism is to be repaired, first turn the positioning bolt 34 counterclockwise to move the positioning bolt 34 upward away from the bottom wall of the movable groove 35 and the positioning hole 31, then pull the movable plate 3 to the left to make the second through hole 17 no longer connected to the third through hole 18, and the second through hole 17 is closed by the movable plate 3. At this time, the bottom end of the positioning bolt 34 is aligned with the other positioning hole 31, and then turn the positioning bolt 34 clockwise to allow the bottom end of the positioning bolt 34 to pass through the other positioning hole 31 and be threadedly connected to the bottom wall of the movable groove 35 again to form a positioning for the movable plate 3, and then turn the clamping bolt 9 counterclockwise to separate the clamping bolt 9 from the mounting seat 5. When the mounting seat 5 is to be installed, first align the clamping bolt 9 on the mounting seat 5 and the quick-lock valve seat 7, and then screw the clamping bolt 9 into the mounting seat 5 clockwise, so that the feed hole 19 is connected to the fourth through hole 23, and then turn the positioning bolt 34 counterclockwise to allow the positioning bolt 34 to move upward away from the bottom wall of the movable groove 35 and the positioning hole 31, and then push the movable plate 33 to the right to allow the third through hole 18 to connect the second through hole 17 and the fourth through hole 23. At this time, the bottom end of the positioning bolt 34 is aligned with another positioning hole 31, and then the positioning bolt 34 is turned clockwise to allow the bottom end of the positioning bolt 34 to pass through the other positioning hole 31 and be threadedly connected to the bottom wall of the movable groove 35 again to form a positioning for the movable plate 3. A clamping hole 29 is provided on the quick-lock valve seat 7, and the clamping bolt 9 passes through the connecting seat 2 and the clamping hole 29 and is threadedly connected to the mounting seat 5.

[0042] like Figure 1 , Figure 2 , Figure 3 as well as Figure 5 As shown, the movable plate 3 includes a vertical portion and a horizontal portion, the vertical portion is fixedly connected to the horizontal portion, and the horizontal portion slides in the movable groove 35 .

[0043] The vertical portion can be easily pulled manually by the staff, thereby facilitating the staff to move the movable plate 3.

[0044] like Figure 1-Figure 5 As shown, it also includes a limiting bolt 10, and a limiting groove 28 is opened on the horizontal part. The limiting bolt 10 passes through the connecting seat 2 and the limiting groove 28, and is threadedly connected to the quick-lock valve seat 7.

[0045] When the second through hole 17 is closed by the third through hole 18, the left end of the limit groove 28 abuts the limit bolt 10, and the positioning bolt 34 passes through the positioning hole 31 and is threadedly connected to the bottom wall of the movable groove 35. When the positioning bolt 34 moves upward away from the positioning hole 31, the movable plate 3 is pulled leftward to allow the movable plate 3 to close the second through hole 17. The limit groove 28 will slide relative to the limit bolt, and when the right end of the limit groove 28 abuts the limit bolt 10, the positioning bolt 34 will align with the other positioning hole 31. At this time, the positioning bolt 34 is screwed clockwise into the other positioning hole 31 and the bottom wall of the movable groove 35 to form the positioning of the movable plate 3.

[0046] like Figure 1-Figure 5 As shown, the number of the clamping bolts 9 is four.

[0047] The four clamping bolts 9 can firmly mount the mounting seat 5 on the manual quick-lock valve, and the number of the limiting bolts 10 can also be four.

[0048] The above embodiments should not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent conversion shall fall within the protection scope of the present invention.

Claims

1. A particle feeding system for lubricating a die casting machine punch, characterized in that: It includes a feeding hopper, a metering mechanism, a feeding pipe and a material dropping mechanism, wherein the metering mechanism includes a mounting seat, a metering block and a metering cylinder; The mounting seat is connected to the bottom end of the feed hopper and is provided with a slide groove, a feed hole, an air inlet hole and a discharge hole. The metering cylinder is fixedly connected to the mounting seat. The metering block slides in the slide groove and is fixedly connected to the piston rod of the metering cylinder. A metering hole is provided on the metering block. The air inlet hole is fixedly connected to an air inlet pipe. The feed pipe is fixedly connected to the discharge hole and the blanking mechanism. The blanking mechanism is connected to a guide pipe.

2. A particle feeding system for lubricating a die casting machine punch according to claim 1, characterized in that: The material dropping mechanism includes a material dropping hopper and a connecting pipe. The material dropping hopper is fixedly connected to the feeding pipe and a mounting plate is fixedly arranged inside. An exhaust pipe is fixedly arranged at the center of the mounting plate. An exhaust hole is opened at the top of the material dropping hopper and the bottom is fixedly connected to the connecting pipe.

3. A particle feeding system for lubricating a die casting machine punch according to claim 2, characterized in that: An air blowing pipe is obliquely arranged on the connecting pipe.

4. A particle feeding system for lubricating a die casting machine punch according to claim 2, characterized in that: A connecting block is fixedly arranged at the top of the drop hopper, and a baffle is fixedly connected to the connecting block.

5. A particle feeding system for lubricating a die casting machine punch according to claim 1, characterized in that: It also includes a manual quick-lock valve, which includes a quick-lock valve seat, a clamping bolt, a positioning bolt and a movable plate. A connecting seat is fixedly arranged at the bottom end of the feed hopper, and the quick-lock valve seat is provided with a movable groove. The movable plate slides in the movable groove. The clamping bolt passes through the connecting seat and the quick-lock valve seat, and is threadedly connected to the mounting seat. The connecting seat, the top wall of the movable groove, the movable plate and the bottom wall of the movable groove are respectively provided with a first through hole, a second through hole, a third through hole and a fourth through hole. The feed hole is connected to the first through hole, the second through hole, the third through hole and the fourth through hole. Two positioning holes are provided on the movable plate. The positioning bolt passes through the connecting seat and the positioning hole, and is threadedly connected to the quick-lock valve seat.

6. A particle feeding system for lubricating a die casting machine punch according to claim 5, characterized in that: The movable plate comprises a vertical portion and a horizontal portion, the vertical portion is fixedly connected to the horizontal portion, and the horizontal portion slides in the movable groove.

7. A particle feeding system for lubricating a die casting machine punch according to claim 6, characterized in that: It also includes a limiting bolt. A limiting groove is provided on the horizontal portion. The limiting bolt passes through the connecting seat and the limiting groove and is threadedly connected to the quick-lock valve seat.

8. A particle feeding system for lubricating a die casting machine punch according to claim 5, characterized in that: The number of the clamping bolts is four.

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