Pressing device

Abstract

The invention provides a press-fitting device, which consists of a cylinder, a press-fitting system, a feeding system and a control system. When in use, steel balls are loaded one by one from the upper end of the feeding hopper, and after being filled, the plug is tightened and sealed, and compressed air is introduced from the upper end to ensure that the steel balls can fall into the right cylinder one by one; the right side of the magnet attracts the steel balls; when the steel balls are press-fitted, the right side of the pressing plate is pressed down by hand, the spring II is compressed, and the pressing plate makes the second plug move downward through the hinge III and the second connecting rod to block the air inlet; at this time, the left side of the pressing plate makes the first sealing plug move upward through the hinge I and the first connecting rod to open the exhaust port, the spring I makes the piston and the push rod move rightward, and the steel ball is pressed into the press-fitted hole of the workpiece.

Description

Technical Field

[0001] The invention relates to a tool, in particular to a press-fitting device. Background Art

[0002] In the process of machining the cylinder cover of the automobile engine, in order to seal the oil circuit, it is necessary to press a steel ball into the already machined hole with an interference fit to seal it. The traditional method of pressing the steel ball in is to use special equipment for assembly. The problem is that the equipment manufacturing cost is high and the cycle is long; and the traditional manual pressing method is not only inefficient, but also the size of the pressing force of each manual tapping cannot be controlled. The present invention completely avoids the defects of the above two methods. It is not only efficient, but also can press the steel ball into the press-fit hole of the workpiece with a constant pressing force every time, which well ensures the assembly consistency. Summary of the invention

[0003] The object of the present invention is to provide an improved steel ball press-fitting device, which can quickly press a steel ball into a press-fitting hole of a workpiece, and keep the pressing force constant each time.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a pressing device, including a cylinder, a limit ring, a spring I, a rear end cover, a first sealing plug, a first connecting rod, a hinge I, a pressure plate, a hinge II, a spring II, a hinge III, a second connecting rod, a second sealing plug, a feeding hopper, a plug, a magnet, a push rod, a sealing ring and a piston.

[0005] The cylinder barrel is composed of a first cylinder body, a first cylinder, an exhaust port, a first sealing hole, a second sealing hole, an air inlet, a feed port, a second cylinder body and a second cylinder. The outer circle of the first cylinder body is circular, and the first cylinder is inside the first cylinder body; the exhaust port and the first sealing hole are above the first cylinder body, and the exhaust port is placed on the left side of the first sealing hole; the exhaust port and the first sealing hole are connected; the second sealing hole and the air inlet are above the first cylinder body, the air inlet is on one side of the second sealing hole, and the second sealing hole is on one side of the first sealing hole; the second sealing hole and the air inlet are connected; the second cylinder body is on one side of the first cylinder body; the second cylinder is inside the second cylinder body; and the feed port is above the second cylinder body.

[0006] The press-fitting system includes: the piston is installed inside the cylinder, and its outer circle cooperates with the first cylinder; the limit ring is installed inside the cylinder; the spring I is installed inside the limit ring; the rear end cover is fixed on one side of the cylinder; the push rod is fixed on one side of the piston, and its outer circle cooperates with the second cylinder; the sealing ring is installed on the second cylinder and cooperates with the outer circle of the push rod; the magnet is fixed on one side of the push rod.

[0007] The feeding system includes: the upper end of the feeding hopper is conical in shape, which is convenient for loading the steel balls A; the upper end of the feeding hopper is internally threaded, and the lower end is fixed above the second cylinder body; the lower end of the plug is externally threaded, which cooperates with the internal thread of the upper end of the feeding hopper; the upper end of the plug is provided with a through hole, which is connected to the compressed air to ensure that the steel balls A can enter the second cylinder one by one through the feeding port.

[0008] The control system includes: hinge II is fixed above the first cylinder body; the pressure plate is fixed above hinge II; hinge I is installed below the left side of the pressure plate; the first sealing plug is installed below hinge I through the first connecting rod; the first sealing plug cooperates with the first sealing hole; hinge III is installed below the right side of the pressure plate; the second sealing plug is installed below hinge III through the second connecting rod; the second sealing plug cooperates with the second sealing hole; spring II is installed between the pressure plate and the upper end surface of the first cylinder body, and is placed on one side of the second connecting rod.

[0009] In actual use, the steel balls are loaded one by one from the upper end of the feed hopper, and after being filled, the plug is tightened and compressed air is introduced from the upper end to ensure that the steel balls can fall into the second cylinder one by one; the right side of the magnet attracts the steel balls; the spring II bounces the right end of the pressure plate upward, and the left end of the pressure plate moves the first sealing plug downward through the hinge I and the first connecting rod to block the exhaust port; the compressed air enters the first cylinder from the air inlet, pushing the piston and the push rod to the left until the left end of the piston fits with the right end of the limit ring, at which time the spring I is completely compressed; when the steel balls are pressed, the right side of the pressure plate is pressed down by hand, the spring II is compressed, and the pressure plate moves the second sealing plug downward through the hinge III and the second connecting rod to block the air inlet; at this time, the left side of the pressure plate moves the first sealing plug upward through the hinge I and the first connecting rod to open the exhaust port, the spring I moves the piston and the push rod to the right, and the steel ball is pressed into the pressed hole of the workpiece.

[0010] The invention can quickly press the steel ball into the press-fit hole of the workpiece during use, and the force of each pressing is kept constant; meanwhile, it has the characteristics of simple structure, safe and stable performance, convenient use, low manufacturing cost, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of an initial state of a press-fitting device of the present invention before press-fitting.

[0012] Figure 2 It is a front view of a press-fitting device of the present invention during press-fitting.

[0013] Figure 3 It is a front view of a cylinder barrel of a press-fitting device of the present invention.

[0014] In the figure, 1-cylinder, 2-limiting ring, 3-spring I, 4-rear end cover, 5-first sealing plug, 6-first connecting rod, 7-hinge I, 8-pressure plate, 9-hinge II, 10-spring II, 11-hinge III, 12-second connecting rod, 13-second sealing plug, 14-feeding hopper, 15-blocking, 16-magnet, 17-push rod, 18-sealing ring, 19-piston, 101-first cylinder body, 102-first cylinder, 103-exhaust port, 104-first sealing hole, 105-second sealing hole, 106-air inlet, 107-feeding port, 108-second cylinder body, 109-second cylinder. DETAILED DESCRIPTION

[0015] The details and working conditions of the specific device proposed according to the present invention are described below in conjunction with the accompanying drawings.

[0016] The device includes a cylinder 1, a limit ring 2, a spring I3, a rear end cover 4, a first sealing plug 5, a first connecting rod 6, a hinge I7, a pressure plate 8, a hinge II9, a spring II10, a hinge III11, a second connecting rod 12, a second sealing plug 13, a feeding hopper 14, a plug 15, a magnet 16, a push rod 17, a sealing ring 18 and a piston 19.

[0017] The cylinder barrel 1 is composed of a first cylinder body 101, a first cylinder 102, an exhaust port 103, a first sealing hole 104, a second sealing hole 105, an air inlet 106, a feed port 107, a second cylinder body 108 and a second cylinder 109. The outer circle of the first cylinder body 101 is circular, and the first cylinder 102 is inside the first cylinder body 101; the exhaust port 103 and the first sealing hole 104 are above the first cylinder body 101, and the exhaust port 103 is placed on the left side of the first sealing hole 104; The exhaust port 103 is connected to the first sealing hole 104; the second sealing hole 105 and the air inlet 106 are above the first cylinder 101, the air inlet 106 is on the right side of the second sealing hole 105, and the second sealing hole 105 is on the right side of the first sealing hole 104; the second sealing hole 105 and the air inlet 106 are connected; the second cylinder 108 is on the right side of the first cylinder 101; the second cylinder 109 is inside the second cylinder 108; the feed port 107 is above the second cylinder 108.

[0018] The press-fitting system includes: the piston 19 is installed inside the cylinder 1, and its outer circle cooperates with the first cylinder 102; the limit ring 2 is installed inside the cylinder 1 and is placed on the left side of the piston 19; the spring I3 is installed inside the limit ring 2 and is placed on the left side of the piston 19; the rear end cover 4 is fixed to the left side of the cylinder 1; the push rod 17 is fixed to the right side of the piston 19, and the outer circle of the push rod 17 cooperates with the second cylinder 109; the sealing ring 18 is installed on the second cylinder 109 and cooperates with the outer circle of the push rod 17; the magnet 16 is fixed to the right side of the push rod 17.

[0019] The feeding system includes: the upper end of the feeding hopper 14 is conical in shape, which is convenient for loading the steel balls A; the upper end of the feeding hopper 14 is internally threaded, and the lower end is fixed above the second cylinder body 108; the lower end of the plug 15 is externally threaded, which cooperates with the internal thread at the upper end of the feeding hopper 14; the upper end of the plug 15 is provided with a through hole, which is connected to the compressed air to ensure that the steel balls A can enter the second cylinder 109 one by one through the feed port 107.

[0020] The control system includes: hinge II 9 is fixed above the first cylinder body 101; the pressure plate 8 is fixed above the hinge II 9; the hinge I7 is installed at the lower left side of the pressure plate 8; the first sealing plug 5 is installed at the lower part of the hinge I7 through the first connecting rod 6; the first sealing plug 5 cooperates with the first sealing hole 104; the hinge III 11 is installed at the lower right side of the pressure plate 8; the second sealing plug 13 is installed at the lower part of the hinge III 11 through the second connecting rod 12; the second sealing plug 13 cooperates with the second sealing hole 105; the spring II 10 is installed between the pressure plate 8 and the upper end surface of the first cylinder body 101, and is placed on the outside of the second connecting rod 12.

[0021] During operation, the steel balls A are loaded one by one from the upper end of the feed hopper 14. After the hopper is full, the seal 15 is tightened and compressed air is introduced from the upper end to ensure that the steel balls A can fall into the second cylinder 109 one by one. The right side of the magnet 16 attracts the steel balls A. The spring II 10 bounces the right end of the pressure plate 8 upward, and the left end of the pressure plate 8 moves the first sealing plug 5 downward through the hinge I 7 and the first connecting rod 6 to block the exhaust port 103. The compressed air enters the first cylinder 102 from the air inlet 106, pushing the piston 19 and the push rod 17 to the left, until the exhaust port 103 is blocked. Until the left end of the piston 19 is in contact with the right end of the limit ring 2, the spring I3 is completely compressed; when the steel ball A is pressed, the right side of the pressure plate 8 is pressed down by hand, the spring II10 is compressed, and the pressure plate 8 moves the second sealing plug 13 downward through the hinge III11 and the second connecting rod 12 to block the air inlet 106; at this time, the left side of the pressure plate 8 moves the first sealing plug 5 upward through the hinge I7 and the first connecting rod 6 to open the exhaust port 103, and the spring I3 moves the piston 19 and the push rod 17 to the right, and the steel ball A is pressed into the pressed hole of the workpiece.

Claims

1. A press-fitting device, comprising a cylinder (1), a stop ring (2), a spring I (3), a rear end cover (4), a first sealing plug (5), a first connecting rod (6), a hinge I (7), a pressure plate (8), a hinge II (9), a spring II (10), a hinge III (11), a second connecting rod (12), a second sealing plug (13), a feeding hopper (14), a plug (15), a magnet (16), a push rod (17), a sealing ring (18) and a piston (19), characterized in that: The cylinder barrel (1) is composed of a first cylinder body (101), a first cylinder (102), an exhaust port (103), a first sealing hole (104), a second sealing hole (105), an air inlet (106), a feed port (107), a second cylinder body (108) and a second cylinder (109). The first cylinder (102) is inside the first cylinder body (101); the exhaust port (103) and the first sealing hole (104) are above the first cylinder body (101); the exhaust port (103) and the first sealing hole (104) are The second sealing hole (105) and the air inlet (106) are connected; the second sealing hole (105) and the air inlet (106) are located above the first cylinder (101); the air inlet (106) is located on one side of the second sealing hole (105); the second sealing hole (105) and the air inlet (106) are connected; the second cylinder (108) is located on one side of the first cylinder (101); the second cylinder (109) is located inside the second cylinder (108); the feed inlet (107) is located above the second cylinder (108); The press-fitting system comprises: a piston (19) installed inside a cylinder (1), and its outer circle matches with a first cylinder (102); a limit ring (2) installed inside the cylinder (1), a spring I (3) installed inside the limit ring (2), and a rear end cover (4) fixed to one side of the cylinder (1); a push rod (17) fixed to one side of the piston (19), and the outer circle of the push rod (17) matches with a second cylinder (109); a sealing ring (18) installed on the second cylinder (109), and matches with the outer circle of the push rod (17); and a magnet (16) fixed to one side of the push rod (17); The feeding system comprises: the upper end of the feeding hopper (14) is conical in shape, and the lower end of the feeding hopper (14) is fixed above the second cylinder body (108); the lower end of the plug (15) cooperates with the upper end of the feeding hopper (14); the upper end of the plug (15) is provided with a through hole, and the steel ball A enters the second cylinder (109) through the feeding port (107); The control system comprises: a hinge II (9) fixed on the top of the first cylinder body (101); a pressure plate (8) fixed on the top of the hinge II (9); a hinge I (7) installed below the left side of the pressure plate (8); a first sealing plug (5) installed below the hinge I (7) through a first connecting rod (6); the first sealing plug (5) cooperates with the first sealing hole (104); a hinge III (11) installed below the right side of the pressure plate (8); a second sealing plug (13) installed below the hinge III (11) through a second connecting rod (12); the second sealing plug (13) cooperates with the second sealing hole (105); a spring II (10) installed between the pressure plate (8) and the upper end surface of the first cylinder body (101), and placed on one side of the second connecting rod (12).

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