Connecting rod ball head assembly for punching machine

Abstract

The connecting rod and ball head assembly for the punching machine comprises a ball head lead screw and a connecting rod, the ball head lead screw is provided with an external thread, the connecting rod is provided with an internal threaded hole, and the external thread is in threaded connection with the internal threaded hole; the connecting rod is connected with an oil outlet assembly, the oil outlet assembly comprises a fixed part and a movable part which are movably arranged, an oil storage cavity used for storing lubricating oil is formed between the movable part and the fixed part, the size of the oil storage cavity changes along with movement of the movable part, the oil outlet assembly is provided with an oil outlet communicated with the oil storage cavity, and the oil outlet is movably connected with a first plug. In a normal state, the first chock plug is connected with the oil outlet in a sealed mode, when the movable part moves to enable the oil storage cavity to become smaller until the pressure intensity in the oil storage cavity is larger than the sealing force between the first chock plug and the oil outlet, the first chock plug is separated from the oil outlet, and lubricating oil is injected to the ball head lead screw from the oil outlet. According to the structure, automatic oil injection can be achieved under the condition that disassembly is not carried out, the state that the interior of the inner threaded hole is fully lubricated is guaranteed, and the situation that the ball head lead screw and the connecting rod are stuck due to insufficient lubrication is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch press equipment technical field, specifically, relate to a punch press connecting rod ball head subassembly. BACKGROUND

[0002] Ball head connecting rod subassembly is one of key structures of punch press converting circular motion into linear motion, ball head connecting rod subassembly includes ball head screw and connecting rod, its connecting mode is threaded connection, is mainly for converting the rotation of crank into the up-down movement of slider through the universal of ball head, in addition threaded connection can adjust the length of screwing in connecting rod and thus obtain corresponding die height (closed height).

[0003] The ball head screw and the connecting rod in the prior art can be stuck, and many factors can cause this situation, including insufficient lubrication, aging of lubricant, and severe pollution, which can cause the lubrication effect to be lost, and if the user continues to use without supplementing the lubrication, burrs, deformation or damage of the parts can be caused, and thus a punch press connecting rod ball head subassembly is provided. UTILITY MODEL CONTENT

[0004] (I) technical problem to be solved

[0005] To solve the above problems, the utility model provides a punch press connecting rod ball head subassembly, which is characterized by comprising a ball head screw and a connecting rod, the ball head screw is provided with an external thread, the connecting rod is provided with an internal thread hole, and the external thread and the internal thread hole are threadedly connected.

[0006] (II) technical scheme

[0007] A punch press connecting rod ball head subassembly, comprising a ball head screw and a connecting rod, the ball head screw is provided with an external thread, the connecting rod is provided with an internal thread hole, and the external thread and the internal thread hole are threadedly connected. The connecting rod is further connected with an oil outlet assembly, the oil outlet assembly comprises a fixed part and a movable part, the movable part is movably arranged in the fixed part, and an oil storage cavity for storing lubricating oil is formed between the movable part and the fixed part. The oil storage space of the oil storage cavity changes with the movement of the movable part, the oil outlet assembly is provided with an oil outlet communicated with the oil storage cavity, and the oil outlet is movably connected with a first plug. Under normal circumstances, the first plug is in sealing connection with the oil outlet, when the movable part moves to make the oil storage cavity smaller, until the pressure in the oil storage cavity is greater than the sealing force between the first plug and the oil outlet, the first plug is separated from the oil outlet, and the lubricating oil flows out from the oil outlet and is injected into the ball head screw.

[0008] Further, the oil outlet assembly comprises an oil injection pipe, first and second end covers are arranged at two ends of the oil injection pipe, the first end cover is provided with an oil inlet, the oil inlet is communicated with the oil storage cavity, the second end cover is provided with an oil outlet, a movable rod is arranged in the oil injection pipe, one end of the movable rod is connected with a first plug, the other end of the movable rod is connected with a second plug, the second plug is used for being fitted into the oil inlet, the second plug is located at a first side of the oil inlet, and the first plug is located at a second side of the oil outlet, so that the first plug and the second plug are simultaneously fitted or separated.

[0009] Further, a spring is arranged outside the movable rod, a diameter of the spring is greater than a diameter of the oil outlet, one end of the spring is in contact with the second end cover, and a pressing plate is arranged at a side of the movable rod close to the first plug, and the other end of the spring is in contact with the pressing plate.

[0010] Further, the connecting rod is provided with a locking sleeve mounting seat, the locking sleeve mounting seat is provided with a mounting groove, the mounting groove is adjacent to one side of the internal threaded hole, a communication port is arranged between the mounting groove and the internal threaded hole, the locking sleeve mounting seat is provided with a connecting port, the connecting port is opposite to the communication port, and the oil outlet is arranged in the mounting groove through the connecting port, so that the oil outlet faces the communication port.

[0011] Further, the fixing member comprises first and second housings, the first housing is provided with a first inner cavity, the first inner cavity is provided with a first opening, the second housing is provided with a second inner cavity, the second inner cavity is provided with a second opening, the first opening is opposite to the second opening, so that the first and second housings form a common sealed cavity, a movable member is arranged in the first housing, the second housing is connected with the oil outlet assembly, and a cross-sectional area of the second inner cavity is smaller than that of the movable member, so that movement of the movable member is limited in the first housing.

[0012] Further, the drive device is connected with the drive screw, the movable member adopts a ring-shaped plate, the ring-shaped plate is provided with an inner ring, the inner ring is rotatably connected with a sleeve, and the sleeve is threadedly connected with the drive screw.

[0013] Further, the ring-shaped plate is further provided with an outer ring, the outer ring is provided with a first sealing ring, and an outer side of the first sealing ring is attached to an inner wall of the oil storage cavity.

[0014] Further, the drive device comprises a transmission device and a micro motor, the transmission device comprises first and second gears, a worm gear and a worm, the first gear is connected with an output end of the micro motor, a radius of the second gear is greater than that of the first gear, a radius of the worm gear is greater than that of the second gear, the second gear is in meshing connection with the first gear, the second gear and the worm are coaxially connected, the worm is in meshing connection with the worm gear, the worm gear is provided with an output shaft, and the output shaft is used for connecting the drive screw.

[0015] Further, a coupling is arranged between the output shaft and the drive screw, the coupling is arranged in the oil storage cavity, a second sealing ring is arranged outside the coupling, the outer side of the second sealing ring is attached to the inner side of the oil storage cavity, the second sealing ring comprises a main body part, an oil-proof part and a dust-proof part, the oil-proof part and the dust-proof part are arranged outside the main body part, a buffer groove is formed between the oil-proof part and the dust-proof part, and the buffer groove is used for storing leaked lubricating oil.

[0016] Further, the fixing member is provided with an oil delivery pipe, and a one-way valve is arranged on the oil delivery pipe, and the one-way valve is used for allowing the lubricating oil to flow into the fixing member in one direction.

[0017] (Three) beneficial effects

[0018] The oil outlet assembly and the oil storage cavity are arranged in the punch connecting rod ball head assembly, the liquid pressure in the oil storage cavity is changed by the relative position movement of the fixing member and the movable member, when the pressure in the oil storage cavity is greater than the sealing force, the first plug is broken, and then the lubricating oil in the oil storage cavity is injected into the internal thread hole through the oil outlet, and the automatic oil injection effect is realized, the ball head screw and the connecting rod do not need to be disassembled, the convenience of oil injection is improved, the efficiency of later maintenance is improved, and good practicability is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view of the utility model embodiment;

[0020] Figure 2 It is Figure 1 It is a sectional view at a-a;

[0021] Figure 3 It is Figure 2 It is an enlarged view at b;

[0022] Figure 4 It is Figure 2 It is an enlarged view at c;

[0023] Figure 5 , Figure 6 It is Figure 2 It is an enlarged view at d (including the internal structure diagram of the oil outlet assembly in the spring relaxation state or the compression state);

[0024] Figure 7 It is Figure 2 It is an enlarged view at e;

[0025] Figure 8 It is a structural schematic view of the utility model embodiment.

[0026] EXPLANATION OF REFERENCE NUMERALS:

[0027] 1, ball screw; 2, connecting rod; 3, first housing; 4, second housing; 5, locking sleeve mounting seat; 6, internal thread hole; 7, external thread; 8, oil storage cavity; 9, drive screw; 10, oil injection pipe; 11, transmission device; 12, micro motor; 13, first gear; 14, second gear; 15, worm; 16, worm wheel; 17, output shaft; 18, sleeve; 19, annular plate; 20, first sealing ring; 21, first end cover; 22, second end cover; 23, oil inlet; 24, oil outlet; 25, second plug; 26, first plug; 27, movable rod; 28, one-way valve; 29, spring; 30, mounting groove; 31, pressing plate; 32, shaft coupling; 33, main body; 34, dustproof part; 35, oil-proof part; 36, buffer groove; 37, reinforcing rib. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0029] Reference Figures 1 to 8 A connecting rod ball head assembly for a punch comprises a ball screw 1 and a connecting rod 2. The ball screw 1 is provided with an external thread 7, and the connecting rod 2 is provided with an internal thread hole 6. The external thread 7 matches the internal thread hole 6, so that the ball screw 1 and the connecting rod 2 are threadedly connected. The connecting rod 2 is further provided with an oil outlet assembly. The oil outlet assembly comprises a fixed part and a movable part. The movable part is movably arranged in the fixed part. An oil storage cavity 8 for storing lubricating oil is formed between the movable part and the fixed part. The oil outlet assembly is provided with an oil outlet 24 in communication with the oil storage cavity 8. The oil outlet 24 is movably connected with a first plug 26. In the normal state, the first plug 26 seals the oil outlet 24. In the specific oil injection process, when the movable part moves towards the fixed part, the oil storage cavity 8 becomes smaller, and the liquid level of the lubricating oil rises. When the liquid level of the lubricating oil rises to the position of the oil outlet 24 or exceeds the position of the oil outlet 24, the lubricating oil in the oil storage cavity 8 is sprayed from the oil outlet 24 to the ball screw 1. The principle is that the liquid pressure is greater than the sealing force of the first plug 26 blocking the oil outlet 24 by the reduction of the oil storage cavity 8. The first plug is separated from the oil outlet, and the lubricating oil flows out of the oil outlet and is injected to the ball screw until the liquid pressure in the oil storage cavity 8 and the external pressure are balanced. In the prior art, the ball screw 1 and the connecting rod 2 are usually disassembled and then lubricated. Through the arrangement of the utility model, the lubrication can be realized without disassembly, and the convenience and efficiency of lubrication are improved.

[0030] The fixing part comprises a first shell 3 and a second shell 4, the first shell 3 is provided with a first inner cavity, the first inner cavity is provided with a first opening, the second shell 4 is provided with a second inner cavity, the second inner cavity is provided with a second opening, the first opening is connected to the second opening, so that the first shell 3 and the second shell 4 form a common closed cavity, a movable part is arranged in the first shell 3, an oil outlet assembly is connected to the second shell 4, the cross-sectional area of the second inner cavity is smaller than that of the movable part, so that the movement of the movable part is limited in the first shell 3. It should be noted that the closed cavity includes an oil storage cavity 8, but the oil storage cavity 8 is not equal to the closed cavity, the oil storage cavity 8 can be the second inner cavity or the second inner cavity plus part of the first inner cavity, and the specific space size is determined according to the movement of the movable part. The position of the movable part and the oil outlet assembly in the above setting ensures that the oil storage cavity 8 is connected to the oil outlet assembly, avoiding the situation that the oil cannot be injected. The second shell 4 can also be provided with a gas delivery pipe, and the gas delivery pipe is connected to a gas pump. When the liquid in the oil storage cavity 8 is less, the gas pump is driven, air enters the oil storage cavity 8, the liquid pressure is increased, the liquid level is raised, and the liquid flow is promoted. The first shell 3 is provided with an oil delivery pipe, the oil delivery pipe is provided with a one-way valve 28, the one-way valve 28 is used to make the lubricating oil flow into the first inner cavity in one direction, avoiding the situation that the liquid flows back.

[0031] The oil outlet assembly comprises an oil injection pipe 10, the end of the oil injection pipe 10 is provided with a first end cover 21 and a second end cover 22, the first end cover 21 is provided with an oil inlet 23, the second end cover 22 is provided with an oil outlet 24, the oil injection pipe 10 is communicated between the oil inlet 23 and the oil outlet 24, the oil injection pipe 10 is provided with a movable rod 27, one end of the movable rod 27 is provided with a first plug head 26, the first plug head 26 is used for fitting the oil outlet 24, the other end is provided with a second plug head 25, the second plug head 25 is used for fitting the oil inlet 23, the second plug head 25 is on the first side of the oil inlet 23, the first plug head 26 is on the second side of the oil outlet 24, wherein the first side and the second side are the same side of the oil inlet 23 and the oil outlet 24, the above setting is based on the oil leakage and the plug head being too tight in the practice process, the first plug head 26 and the second plug head 25 can play a double closed role when fitting, strictly control the oil injection amount, when the liquid pressure becomes large, the first plug head 26 is extruded and opened, the second plug head 25 can also be opened at the same time, improve the oil injection efficiency. The movable rod 27 is externally provided with a spring 29, the diameter of the spring 29 is greater than the diameter of the oil outlet 24, so that one end of the spring 29 contacts the second end cover 22, the movable rod 27 is provided with a pressing plate 31 on the side close to the first plug head 26, the pressing plate 31 contacts the other end of the spring 29, when the liquid enters from the oil inlet 23, the movable rod 27 is subjected to the pressure of the liquid, one end of the movable rod 27 provided with the second plug head 25 moves to the inner thread hole 6 direction, at this time, the lubricating oil flows out from the gap between the movable rod 27 and the oil outlet 24, the guidance of the movable rod 27 can lengthen the injection path of the lubricating oil. When the movable rod 27 moves, the pressing plate 31 also moves, under the joint action of the pressing plate 31 and the second end cover 22, the spring 29 is compressed, when the internal and external pressures are consistent, the spring 29 restores to the original state, the spring 29 pushes the pressing plate 31, the first plug head 26 is pushed into the oil inlet 23, and the second plug head 25 is pushed into the oil outlet 24. The reinforcing ribs 37 are arranged along the outer side of the movable rod 27, the reinforcing ribs 37 are attached to the inner wall of the oil outlet 24, the reinforcing ribs 37 form an oil outlet gap therebetween, which strengthens the strength of the movable rod 27, avoids the movable rod 27 from blocking the oil outlet 24, and when the movable rod 27 moves, the oil outlet 24 also plays a guiding role, so that the movable rod 27 moves parallel to the oil outlet 24 and the oil inlet 23.

[0032] The connecting rod 2 is provided with a locking sleeve mounting seat 5, the locking sleeve mounting seat 5 is provided with a mounting groove 30, the mounting groove 30 is adjacent to one side of the internal thread hole 6, a communication port is arranged between the mounting groove 30 and the internal thread hole 6, the locking sleeve mounting seat 5 is provided with a connecting port, the connecting port is opposite to the communication port, the oil outlet 24 is arranged in the mounting groove 30 through the connecting port, so that the oil outlet 24 faces the communication port. The connecting rod 2 in the prior art is provided with the locking sleeve mounting seat 5 for arranging the locking sleeve for locking the ball head screw 1, the position of the communication port is just suitable for the requirement of the oil injection part for the oil injection port, the oil outlet assembly is arranged on the locking sleeve mounting seat 5, the existing structure can be fully utilized, and it is not necessary to arrange the oil injection port on the inner wall of the internal thread hole 6 again, so that the damage to the internal thread hole 6 is reduced. In the above arrangement, the mounting groove 30 can provide space for the movement of the movable rod 27, and the arrangement of the oil outlet 24 and the communication port can enable the movable rod 27 to move in alignment with the internal thread hole 6, thereby improving the effectiveness of oil injection.

[0033] The utility model discloses still include drive screw 9 and drive arrangement, drive arrangement connects drive screw 9, make drive screw 9 rotate, movable part adopts annular plate 19, annular plate 19 is equipped with inner ring, inner ring is equipped with sleeve 18, be equipped with annular groove on sleeve 18, inner ring and annular groove match, make inner ring sleeve set in the outer annular rotation of sleeve 18, sleeve 18 is screwed on drive screw 9. Annular plate 19 still is equipped with outer ring, outer ring sleeve sets up first sealing washer 20, the outside of first sealing washer 20 is attached to the inner wall of first housing 3, and the connecting gap of sealing annular plate 19 and first housing 3. The above-mentioned arrangement annular plate 19 is driven under sleeve 18, moves along the length direction straight line of drive screw 9, compresses liquid, guarantees the airtightness of oil storage cavity 8 simultaneously.

[0034] Drive arrangement includes transmission 11 and micro motor 12, and transmission 11 includes first gear 13, second gear 14, worm wheel 16 and worm 15, first gear 13 is connected to the output end of micro motor 12, the radius of second gear 14 is greater than the radius of first gear 13, the radius of worm wheel 16 is greater than the radius of second gear 14, second gear 14 is engaged to connect first gear 13, second gear 14 and worm 15 are coaxially connected, worm 15 is engaged to connect worm wheel 16, and worm wheel 16 is provided with output shaft 17, and output shaft 17 is used for connecting drive screw 9. Micro motor 12 is easy to be damaged when high-speed rotating, and the function of the above-mentioned transmission 11 is just to convert the high-speed rotation of the motor into low-speed high-torque output, thereby reducing the load of the motor and prolonging the service life of the motor.

[0035] A coupling 32 is arranged between the output shaft 17 and the drive screw 9, the coupling 32 is arranged in the oil storage cavity 8, the coupling 32 is externally sleeved with a second sealing ring, the second sealing ring can separate the lubricating oil and the driving device, the outer side of the second sealing ring is attached to the inner wall of the oil storage cavity 8, so that when the hydraulic pressure increases, the liquid cannot leak to the driving device. The second sealing ring comprises a main body part 33, an oil-proof part 35 and a dust-proof part 34, the oil-proof part 35 and the dust-proof part 34 are arranged around the outer side of the main body part 33, and are attached to the inner wall of the oil storage cavity 8, thereby achieving the sealing effect. The oil-proof part 35 and the dust-proof part 34 are arranged in parallel and are spaced apart, a buffer groove 36 is formed between the dust-proof part 34 and the oil-proof part 35, and the buffer groove 36 is used for storing leaked lubricating oil. The arrangement has the dual effects of oil-proofing and dust-proofing, thereby ensuring the airtightness of the oil storage cavity 8.

[0036] In order to make the above-mentioned purpose, characteristics and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in combination with the drawings.

Claims

1. A link ball head assembly for a punch press, characterized by, The application relates to a ball screw (1) and a connecting rod (2), the ball screw (1) is provided with external threads (7), the connecting rod (2) is provided with internal threaded holes (6), the external threads (7) and the internal threaded holes (6) are threadedly connected, the connecting rod (2) is further provided with an oil outlet assembly, the oil outlet assembly comprises a fixed part and a movable part, the movable part is movably arranged in the fixed part, an oil storage cavity (8) for storing lubricating oil is formed between the movable part and the fixed part, the oil storage space of the oil storage cavity (8) changes in size with the movement of the movable part, the oil outlet assembly is provided with an oil outlet (24) in communication with the oil storage cavity (8), the oil outlet (24) is movably connected with a first plug head (26), the first plug head (26) is in sealing connection with the oil outlet (24) in a normal state, when the movable part moves to make the oil storage cavity (8) smaller, until the pressure in the oil storage cavity (8) is greater than the sealing force between the first plug head (26) and the oil outlet (24), the first plug head (26) is separated from the oil outlet (24), and the lubricating oil flows out of the oil outlet (24) and is injected to the ball screw (1).

2. A link ball assembly for a punch press as defined in claim 1 wherein, The oil outlet assembly comprises an oil injection pipe (10), the oil injection pipe is provided with a first end cover (21) and a second end cover (22) at two ends, the first end cover (21) is provided with an oil inlet (23), the oil inlet (23) is in communication with the oil storage cavity (8), the second end cover (22) is provided with the oil outlet (24), the oil injection pipe (10) is provided with a movable rod (27) inside, one end of the movable rod (27) is connected with the first plug head (26), the other end of the movable rod (27) is connected with a second plug head (25), the second plug head (25) is used for being embedded in the oil inlet (23), the second plug head (25) is located on a first side of the oil inlet (23), and the first plug head (26) is located on a second side of the oil outlet (24), so that the first plug head (26) and the second plug head (25) are embedded or separated at the same time.

3. A link ball assembly for a punch press as defined in claim 2 wherein, A spring (29) is arranged outside the movable rod (27), the diameter of the spring (29) is greater than the diameter of the oil outlet (24), one end of the spring (29) contacts the second end cover (22), and the movable rod (27) is provided with a pressing plate (31) on a side close to the first plug head (26), the pressing plate (31) contacts the other end of the spring (29).

4. A link ball assembly for a punch press as defined in claim 2 wherein, The connecting rod (2) is provided with a locking sleeve mounting base (5), the locking sleeve mounting base (5) is provided with a mounting groove (30), the mounting groove (30) is adjacent to one side of the internal threaded hole (6), a communication port is arranged between the mounting groove (30) and the internal threaded hole (6), the locking sleeve mounting base (5) is provided with a connecting port, the connecting port is opposite to the communication port, the oil outlet (24) is arranged in the mounting groove (30) through the connecting port, and the oil outlet (24) is directed towards the communication port.

5. A link ball assembly for a punch press as defined in claim 1 wherein, The fixed part comprises a first shell (3) and a second shell (4), the first shell (3) is provided with a first inner cavity, the first inner cavity is provided with a first opening, the second shell (4) is provided with a second inner cavity, the second inner cavity is provided with a second opening, the first opening is connected with the second opening, so that the first shell (3) and the second shell (4) form a common closed cavity, the movable part is arranged in the first shell (3), the oil outlet assembly is connected to the second shell (4), the cross-sectional area of the second inner cavity is smaller than that of the movable part, so that the movement of the movable part is limited in the first shell (3).

6. A link ball assembly for a punch press as defined in claim 1 wherein, Further comprising a drive screw (9) and a driving device, the driving device is connected with the drive screw (9), so that the drive screw (9) rotates, the movable part adopts a ring plate (19), the ring plate (19) is provided with an inner ring, the inner ring is rotatably connected with a sleeve (18), the sleeve (18) is threadedly connected with the drive screw (9).

7. A connecting rod ball stud assembly for a punch press as defined in claim 6 wherein, The ring plate (19) is further provided with an outer ring, the outer ring is sleeved with a first sealing ring (20), the outer side of the first sealing ring (20) is attached to the inner wall of the oil storage cavity (8).

8. A link ball assembly for a punch press as defined in claim 6 wherein, The driving device comprises a transmission device (11) and a micro motor (12), the transmission device (11) comprises a first gear (13), a second gear (14), a worm wheel (16) and a worm (15), the first gear (13) is connected with the output end of the micro motor (12), the radius of the second gear (14) is greater than that of the first gear (13), the radius of the worm wheel (16) is greater than that of the second gear (14), the second gear (14) is meshingly connected with the first gear (13), the second gear (14) and the worm (15) are coaxially connected, the worm (15) is meshingly connected with the worm wheel (16), the worm wheel (16) is provided with an output shaft (17), the output shaft (17) is used for connecting the drive screw (9).

9. A link ball assembly for a punch press as defined in claim 8 wherein, A shaft coupling (32) is arranged between the output shaft (17) and the drive screw (9), the shaft coupling (32) is arranged in the oil storage cavity (8), a second sealing ring is sleeved outside the shaft coupling (32), the outer side of the second sealing ring is attached to the inside of the oil storage cavity (8), the second sealing ring comprises a main body portion (33), an oil-proof portion (35) and a dust-proof portion (34), the oil-proof portion (35) and the dust-proof portion (34) are arranged outside the main body portion (33), a buffer groove (36) is formed between the dust-proof portion (34) and the oil-proof portion (35), the buffer groove (36) is used for storing leaked lubricating oil.

10. The link ball assembly for a punch press as set forth in claim 1, wherein, The fixed part is provided with an oil conveying pipe, a one-way valve (28) is arranged on the oil conveying pipe, the one-way valve (28) is used for allowing lubricating oil to flow into the fixed part in one direction.

Images