Hinge punch press automatic feeding equipment

Abstract

The utility model discloses a hinge punch press automatic feeding equipment, including the base of setting at the inlet of punch press, the end surface of base is provided with the bunker, the bunker is adapted to be able to store the multiple sheet materials of stacking setting, the bottom of bunker constructs and is equipped with the feeding channel of passing through the bunker, the feeding channel is adapted to have the feeding plate of ejecting, the feeding plate is adapted to be able to push the sheet material of the bottom most in the bunker to move to the die. Multiple sheet materials are stored in the bunker in the stacking, subsequently under the ejection of feeding plate, the sheet material of the bottom most will be sent into the die and is pressed, during the period, the sheet material in the bunker is stopped by the feeding plate and does not fall to the side of feeding channel, when the feeding plate is retracted and is misaligned with the bunker, the sheet material in the bunker falls, and the feeding plate continues to eject immediately, and the automatic feeding of sheet material is realized reciprocatingly, and the improvement of hinge pressing efficiency is realized.

Description

Technical Field

[0001] This utility model relates to the field of hinge manufacturing technology, and in particular, to an automatic feeding device for a hinge punching machine. Background Technology

[0002] A hinge is a mechanical device used to connect two solid objects (such as doors, windows, and cabinets), allowing them to rotate relative to each other to achieve an opening and closing function. Hinges can be classified by material, including stainless steel, zinc alloy, and iron, and their surfaces are often coated or polished to enhance durability. They are widely used in furniture (such as cabinets and wardrobes), building doors and windows, and industrial equipment.

[0003] One of the processes in hinge manufacturing is to punch and bend the protruding part of the sheet material to form a connecting hole. Accordingly, the sheet material needs to be fed into a mold to complete the stamping. Currently, a semi-automatic feeding method is often used, in which the sheet material is manually placed into a feeding mechanism and then fed into the mold by the feeding mechanism. This results in low stamping efficiency for hinges. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an automatic feeding device for a hinge punch press.

[0005] The objective of this utility model is achieved through the following technical solution: An automatic feeding device for a hinged punch press includes a base disposed at the feed inlet of the punch press. A hopper is disposed on the end face of the base. The hopper is adapted to store multiple stacked sheets. A feeding channel is constructed at the bottom of the hopper, and an ejectable feeding plate is disposed in the feeding channel. The feeding plate is adapted to push the bottom sheet in the hopper into the mold.

[0006] Preferably, the feeding plate is ejected under the drive of a cylinder, hydraulic cylinder, electric cylinder, or crank mechanism.

[0007] Preferably, the feeding plate includes a stop portion and an ejector portion disposed at the end of the stop portion, wherein the width of the stop portion is greater than the end of the ejector portion, so that the feeding plate defines a clearance portion on the side of the ejector portion.

[0008] Preferably, the hopper is formed by four limiting plates, and the height of one of the limiting plates is lower than the height of the other three limiting plates.

[0009] Preferably, the hopper is formed by three fixed limiting plates and one movable limiting plate, wherein the movable limiting plate is adapted to be movable to adjust the width of the hopper.

[0010] Preferably, the movable limiting plate includes a connecting part and an abutting part vertically disposed on the connecting part. A waist-shaped groove is provided through the connecting part, and a fastening bolt screwed to the base is adapted to be disposed in the waist-shaped groove.

[0011] Preferably, the feeding channel is defined by a groove formed on the end face of the base, and the hopper is mounted above the groove.

[0012] Preferably, a plurality of suction holes are arranged side by side on the end face of the feeding plate, a suction cylinder is provided on the base, and a piston rod that is sealed and slidably adapted to the suction cylinder is provided on the feeding plate; Preferably, the suction cylinder is provided with a partition mesh, which divides the inner cavity of the suction cylinder into an air chamber and a suction chamber. The suction hole and the suction chamber are connected by a pipe to form a suction air path. A first one-way valve is provided in the suction air path, which is adapted to allow airflow only to the suction chamber. The suction cylinder has an exhaust hole at the opposite position of the air chamber, and a second one-way valve is provided in the exhaust hole, which is adapted to allow airflow only to be discharged through the exhaust hole.

[0013] The beneficial effects of this utility model are as follows: multiple sheets are stacked and stored in the hopper. Then, under the ejection of the feeding plate, the sheet at the bottom is fed into the mold for stamping. During this process, the sheet in the hopper is stopped by the feeding plate and does not fall to one side of the feeding channel. When the feeding plate is retracted and misaligned with the hopper, the sheet in the hopper falls, and then the feeding plate continues to eject. This process is repeated to achieve automatic feeding of the sheet and improve the efficiency of hinge stamping. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is a schematic diagram of the feeding plate structure; Figure 3 This is a schematic diagram of the suction cylinder.

[0015] Reference numerals: 1. Base; 2. Hopper; 3. Feeding channel; 4. Feeding plate; 5. Stop; 6. Ejector; 7. Clearance; 8. Fixed limit plate; 9. Moving limit plate; 10. Connecting part; 11. Abutting part; 12. Waist-shaped groove; 13. Fastening bolt; 14. Slide groove; 15. Suction hole; 16. Suction cylinder; 17. Piston rod; 18. Partition net; 19. Air chamber; 20. Suction chamber; 21. Suction air passage; 22. First one-way valve; 23. Second one-way valve; 24. Sheet; 25. Mold. Detailed Implementation

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

[0017] like Figures 1 to 3 As shown, an automatic feeding device for a hinged punch press includes a base 1 located at the punch press's feed inlet, where "punch press feed inlet" refers to the side of the punch press's die 25. A hopper 2 is specifically provided on the end face of the base 1, allowing for the pre-storage of a large quantity of sheet material 24 to be punched in a stacked manner within the hopper 2. A feeding channel 3 extending through the hopper 2 is constructed at the bottom, and preferably, an ejectable feeding plate 4 is fitted within the feeding channel 3.

[0018] For example, the ejection of the feed plate 4 can be achieved by driving a cylinder, hydraulic cylinder, electric cylinder, or crank mechanism (not shown). It can be imagined that when the feed plate 4 ejects, the sheet 24 located at the bottom of the hopper 2 will be pushed into the mold 25 and stamped by the mold 25 closing. During this period, the sheet 24 in the hopper 2 is stopped by the feed plate 4 and does not fall to the side of the feeding channel 3. When the feed plate 4 retracts and is misaligned with the hopper 2, the sheet 24 in the hopper 2 falls, and then the feed plate 4 continues to eject, thus achieving automatic feeding of the sheet 24.

[0019] In some embodiments, the feed plate 4 preferably includes a stop portion 5 and an ejector portion 6 disposed at the end of the stop portion 5, and the width of the stop portion 5 is limited to be less than the width of the ejector portion 6, thereby defining a clearance portion 7 with a notch-like shape on the side of the ejector portion 6. When the feed plate 4 is ejected, the sheet 24 enters the pressing position of the die 25 under the ejection of the ejector portion 6, at which time the die 25 can simultaneously perform a pressing action. With the clearance of the clearance portion 7, the cutting tool on the die 25 is less likely to collide with the feed plate 4. The die 25 can also be made to operate without stopping, thereby improving the stamping efficiency of the hinge to a greater extent.

[0020] For example, a groove 14 extending toward the mold 25 is provided on the end face of the base 1, which defines the aforementioned feeding channel 3, and the hopper 2 is mounted above the groove 14. In one example, the hopper 2 is defined by four limiting plates, and one of the limiting plates is configured to have a lower height than the other three limiting plates, thereby facilitating the side insertion of the stacked sheet 24 into the hopper 2.

[0021] Furthermore, the four limiting plates can be further defined as three fixed limiting plates 8 and one movable limiting plate 9. For example, the movable limiting plate 9 can be positioned opposite to the fixed limiting plate 8 with the lower height among the three fixed limiting plates 8. When the movable limiting plate 9 is moved and adjusted, different width dimensions of the hopper 2 can be adjusted, allowing sheets 24 of different specifications to fall into the feeding channel 3 under the guidance of the hopper 2.

[0022] In some embodiments, the movable limiting plate 9 may include a connecting portion 10 and an abutment portion 11 vertically disposed on the connecting portion 10. For example, the movable limiting portion may be L-shaped in cross-section, wherein a waist-shaped groove 12 is provided through the end face of the connecting portion 10, and a fastening bolt 13 screwed to the base 1 is adapted in the waist-shaped groove 12. Thus, when the movable limiting plate 9 needs to move to change the size of the hopper 2, the fastening bolt 13 can be loosened; conversely, the fastening bolt 13 can be tightened to maintain the fixed position of the movable limiting plate 9.

[0023] During the stamping process, the inventors discovered that when the sheet 24 is transferred from the previous process to the hopper 2, there may be impurities such as iron filings adhering to its bottom surface. Subsequently, during the ejection action of the sheet 24, the iron filings may fall into the feeding channel 3, or even enter the mold 25, causing abnormalities in the stamping operation.

[0024] In this invention, the feeding plate 4 has several suction holes 15 arranged side by side on its end face, while the base 1 is provided with a suction cylinder 16. The feeding plate 4 is provided with a piston rod 17, which is sealed and slidably adapted in the suction cylinder 16.

[0025] Specifically, a partition 18 is provided inside the suction cylinder 16, which divides the inner cavity of the suction cylinder 16 into an air chamber 19 and a suction chamber 20. The aforementioned suction hole 15 is connected to the suction chamber 20 through a pipe, forming a suction air passage 21 between the suction hole 15, the pipe, and the suction chamber 20. Therefore, a first one-way valve 22 can be adapted to be installed in the suction air passage 21. For example, the first one-way valve 22 can be installed at the connection between the pipe and the suction chamber 20, so that the airflow can only enter the suction cylinder 16 along the path from the suction hole 15 and the pipe to the suction chamber 20.

[0026] In addition, the suction cylinder 16 has an exhaust hole opposite to the air chamber 19, and a second one-way valve 23 is provided in the exhaust hole. The function of the second one-way valve 23 is the opposite of that of the first one-way valve 22, that is, it only allows airflow to be discharged from the exhaust hole.

[0027] When the feeding plate 4 is pushed out, the piston rod 17 is gradually pulled out from the suction cylinder 16, so that a negative pressure is formed in the inner cavity of the suction cylinder 16. Under the action of the negative pressure, a suction airflow is formed at the suction hole 15, which can suck the iron filings adhering to the bottom surface of the sheet 24 into the suction chamber 20. During this period, the second one-way valve 23 remains closed. When the feeding plate 4 retracts, the piston rod 17 gradually inserts into the suction cylinder 16. At this time, the first one-way valve 22 remains closed under pressure, while the second one-way valve 23 opens under pressure to exhaust air, thereby ensuring that the feeding plate 4 can retract smoothly and that the iron filings in the suction chamber 20 are not easily discharged from the suction air passage 21.

[0028] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An automatic feeding device for a hinged punch press, characterized in that: The device includes a base (1) located at the feed inlet of the punch press. A hopper (2) is provided on the end face of the base (1). The hopper (2) is adapted to store multiple stacked sheets. A feeding channel (3) is constructed at the bottom of the hopper (2) and extends through the hopper (2). An ejectable feeding plate (4) is adapted in the feeding channel (3) and is adapted to push the bottom sheet in the hopper (2) into the mold.

2. The automatic feeding device for the hinge punch press according to claim 1, characterized in that: The feeding plate (4) is ejected under the drive of a cylinder, oil cylinder, electric cylinder or crank mechanism.

3. The automatic feeding device for the hinge punch press according to claim 1, characterized in that: The feeding plate (4) includes a stop (5) and an ejector (6) disposed at the end of the stop (5). The width of the stop (5) is greater than the end of the ejector (6), so that the feeding plate (4) defines a clearance portion (7) on the side of the ejector (6).

4. The automatic feeding device for the hinge punch press according to claim 1, characterized in that: The hopper (2) is formed by four limiting plates, and the height of one of the limiting plates is lower than the height of the other three limiting plates.

5. The automatic feeding device for the hinge punch press according to claim 1, characterized in that: The hopper (2) is formed by three fixed limiting plates (8) and one movable limiting plate (9). The movable limiting plate (9) is adapted to be movable so as to adjust the width of the hopper (2).

6. The automatic feeding device for the hinge punch press according to claim 5, characterized in that: The movable limiting plate (9) includes a connecting part (10) and an abutting part (11) vertically arranged on the connecting part (10). A waist-shaped groove (12) is provided through the connecting part (10), and a fastening bolt (13) screwed to the base (1) is adapted in the waist-shaped groove (12).

7. The automatic feeding device for a hinged punch press according to any one of claims 1-6, characterized in that: The feeding channel (3) is defined by a groove (14) formed on the end face of the base (1), and the hopper (2) is mounted above the groove (14).

8. The automatic feeding device for a hinged punch press according to any one of claims 1-6, characterized in that: The feeding plate (4) has several suction holes (15) arranged side by side on its end face. The base (1) is provided with a suction cylinder (16). The feeding plate (4) is provided with a piston rod (17) that is sealed and slidably adapted to the suction cylinder (16). The suction cylinder (16) is provided with a partition (18), which divides the inner cavity of the suction cylinder (16) into an air chamber (19) and a suction chamber (20). The suction hole (15) and the suction chamber (20) are connected by a pipe to form a suction air passage (21). A first one-way valve (22) is provided in the suction air passage (21). The first one-way valve (22) is adapted to allow airflow only to flow to the suction chamber (20). The suction cylinder (16) has an exhaust hole at the opposite position of the air chamber (19), and a second one-way valve (23) is provided in the exhaust hole. The second one-way valve (23) is adapted to allow airflow to be discharged only through the exhaust hole.

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