Liftable precision bench press with rear flywheel

Abstract

The utility model discloses a liftable precise bench press with a rear flywheel, which comprises a workbench, a stand column arranged on the workbench, and a machine body arranged on the outer surface of the stand column in a sliding manner, and is characterized in that a sliding block body is arranged on the front side of the machine body, and a connecting rod is arranged on the upper side of the sliding block body; the connecting rod is movably connected with the sliding block body through a ball head screw, a flywheel is arranged on the rear side of the machine body, an eccentric shaft is arranged in the flywheel in a power connection mode, the eccentric shaft is longitudinally arranged front and back, a crank is arranged on the front side of the eccentric shaft, the flywheel is arranged on the rear portion, and then the flywheel is in power connection with the eccentric shaft through a clutch. Power combination or separation of the eccentric shaft and the flywheel is realized through the clutch; the layout mode of a traditional press machine is changed, the flywheel is transversely arranged instead of being arranged at the rear, a large amount of operation space is saved, the risk that an operator collides with the rotating flywheel is avoided, and the psychological pressure of the operator is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision press equipment, in particular to a precision bench press with a rear-mounted and liftable flywheel. Background Art

[0002] The existing bench press adopts a combination of a workbench, double columns and a fuselage to achieve adjustable closed height, suitable for the installation of various molds with different heights. It is often used in industries such as electronics, automobiles, terminals, jewelry, lamps, bearings, zippers, etc., and can also perform shearing, punching, bending, etc. on metal or non-metal materials. It has a wide range of applications and there are also relevant industry standards. The disadvantages of the existing bench press are that the flywheel and the crankshaft are horizontally arranged left and right, the operator operates in the middle, the flywheel is arranged on the right side, occupying a large space on the right side of the operating table, and it is also easy to be touched by the operator and cause injury during the rotation of the flywheel. Moreover, when the operator replaces the mold, due to the space occupied by the flywheel, it is very inconvenient for the operator to install and replace the mold. A lot of research has been carried out on this. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a precision bench press with a rear-mounted and liftable flywheel, which can solve the problems in the above-mentioned existing technology.

[0004] The utility model is realized by the following technical solutions: A precision bench press with a rear-mounted and liftable flywheel of the utility model includes a workbench, columns are arranged on the workbench, a fuselage is slidably arranged on the outer surface of the columns, and it is characterized in that a slider body is arranged on the front side of the fuselage, a connecting rod is arranged on the upper side of the slider body, the connecting rod is movably connected with the slider body, a flywheel is arranged on the rear side of the fuselage, a crank eccentrically arranged with the eccentric shaft is arranged on the front side of the eccentric shaft, the eccentric shaft is longitudinally arranged front and rear, a crank is arranged on the front side of the eccentric shaft, the crank is rotationally and cooperatively connected with the connecting rod, and the eccentric shaft is rotationally and cooperatively connected with the fuselage.

[0005] In a further technical solution, a clutch device is arranged between the flywheel and the eccentric shaft, and an operating rod device for power interruption of the clutch device is arranged on the rear side of the fuselage.

[0006] In a further technical solution, a cross beam is arranged on the top of the column, an adjusting device for adjusting the height of the fuselage is arranged between the fuselage and the cross beam, a guide rail is also arranged on the front side of the fuselage, the slider body is slidably and cooperatively connected with the guide rail up and down, and a power device for driving the flywheel to rotate is arranged on the rear side of the fuselage.

[0007] Further technical solution: The adjusting device includes a lifting nut seat movably arranged in the cross beam. A lifting screw rod is in threaded fit connection in the lifting nut seat, and the lifting screw rod is fixed on the upper side of the machine body.

[0008] Further technical solution: A ball head screw rod is arranged in the connecting rod, and the bottom of the ball head screw rod is movably connected with the slider body.

[0009] Further technical solution: A threaded hole is arranged in the connecting rod. A ball head screw rod is in threaded fit connection in the threaded hole. A ball head is arranged at the bottom of the ball head screw rod. A spherical device movably connected with the ball head screw rod is arranged in the slider body.

[0010] Further technical solution: The spherical device includes a ball bowl arranged in the slider body. A spherical cover plate is arranged on the upper side of the ball bowl. A third locking nut is in threaded fit connection in the slider body. A first ball cavity is arranged in the ball bowl. A second ball cavity is arranged in the spherical cover plate. The second ball cavity and the first ball cavity are rotationally connected with the ball head. The third locking nut presses and fixes the spherical cover plate on the upper side of the ball bowl.

[0011] Further technical solution: The power device includes a motor arranged at the rear side of the machine body. A motor runner is power-connected to one side of the motor. A belt is wound around the outer surfaces of the flywheel and the motor runner, and the belt power-connects the flywheel and the motor runner.

[0012] Further technical solution: The clutch device includes an overrunning clutch. The overrunning clutch includes a key block arranged on the outer surface of the eccentric shaft. A shaft sleeve and a hexagonal cam are further arranged on the outer surface of the eccentric shaft. The shaft sleeve and the hexagonal cam are fixedly connected to the eccentric shaft through the key block. A coupling and a clutch outer sleeve are further arranged outside the hexagonal cam. A plurality of coupling forks are arranged at the rear side of the coupling. Rollers are arranged between the coupling forks. The clutch outer sleeve is rotatably arranged on the outer surfaces of the coupling forks and the rollers. The clutch outer sleeve is fixedly fitted and connected with the flywheel. A tension spring assembly is elastically connected between the shaft sleeve and the coupling. A roller assembly is arranged among the clutch outer sleeve, the coupling forks and the hexagonal cam.

[0013] Further technical solution: The operating rod device includes a handle shaft arranged at the rear side of the machine body. A clutch handle body is rotatably arranged on the outer surface of the handle shaft. A clutch handle is arranged on one side of the clutch handle body. A stop block is arranged on one side of the clutch handle body.

[0014] The beneficial effects of the present invention are as follows: first, by placing the flywheel at the rear, and then connecting the flywheel to the eccentric shaft through the overrunning clutch, and then extending the clutch handle body from the right side, it is convenient for personnel to operate, and the overrunning clutch is used to realize the power connection or disconnection between the eccentric shaft and the flywheel; it avoids the traditional desktop press structure layout, saves a lot of operating space occupied by the flywheel, greatly reduces the damage caused by people accidentally touching the flywheel, and increases the aesthetics of the machine body and the sense of security of the operator.

[0015] Second, by movably setting the lifting nut seat in the movable hole and fixing the lifting screw on the machine body, personnel can adjust the height of the machine body by rotating the lifting nut seat, and the second locking nut can also play the role of connecting the lifting screw thread to the bottom of the lifting nut seat to offset and limit the position.

[0016] 3. Changing the layout of the traditional press from a horizontal flywheel to a rear flywheel saves a lot of operating space, avoids the risk of collision between the operator and the rotating flywheel, and reduces the operator's psychological pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For ease of explanation, the present invention is described in detail with reference to the following specific embodiments and accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of a precision table press with a rear-mounted flywheel that can be raised and lowered according to the present invention;

[0019] Figure 2 for Figure 1 The structural diagram on the middle right side;

[0020] Figure 3 for Figure 1 Schematic diagram of the rear structure of the middle equipment;

[0021] Figure 4 for Figure 3 Schematic diagram at A in the middle;

[0022] Figure 5 for Figure 4 Schematic diagram of the cross-section structure of the equipment;

[0023] Figure 6 for Figure 5 Schematic diagram at B in the middle;

[0024] Figure 7 for Figure 6 Schematic diagram at C in the middle;

[0025] Figure 8 for Figure 6 Schematic diagram at D in the middle;

[0026] Figure 9 for Figure 2 Schematic diagram of the cross-section structure of the equipment;

[0027] Figure 10 for Figure 9 Schematic diagram at E in the middle;

[0028] Figure 11 for Figure 10 Schematic diagram at F in the middle;

[0029] In the figure, the column 11, the slider body 12, the ball screw 13, the connecting rod 14, the lifting screw 15, the crossbeam 16, the motor 18, the motor base plate 19, the body 21, the guide rail 23, the workbench 24, the flywheel 25, the motor wheel 26, the belt 27, the eccentric shaft 31, the sleeve 32, the coupling 33, the clutch jacket 37, the brake bushing 38, the crank 41, the threaded hole 42, the matching bevel 43, the first locking nut 44, the mounting groove 45, the second Ball cavity 51, ball head 52, first ball cavity 53, ball bowl 54, spherical cover plate 55, third locking nut 56, tapered cavity 57, lifting nut seat 61, movable hole 62, second locking nut 63, handle shaft 71, clutch handle body 72, clutch handle body 73, stop block 74, pressing column 75, connecting block 76, coupling fork 81, key block 82, hexagonal cam 83, roller 84, first set screw 91, second set screw 92. DETAILED DESCRIPTION

[0030] like Figures 1 - 11 As shown, the utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are the same as Figure 1 The up, down, left, right, front and back directions of the projection relationship itself are consistent.

[0031] Embodiment 1, a precision table press with a flywheel rear-mounted and liftable, including a workbench 24, a column 11 is provided on the workbench 24, a crossbeam 16 is provided on the top of the column 11, a body 21 is provided on the outer surface of the column 11 for sliding, an adjustment device for adjusting the height of the body 21 is provided between the body 21 and the crossbeam 16, a slider body 12 is provided on the front side of the body 21 for moving up and down, a connecting rod 14 is provided on the upper side of the slider body 12, and the connecting rod 14 is movably connected to the slider body 12, A flywheel 25 is provided on the rear side of the body 21, and an eccentric shaft 31 is provided for power connection in the flywheel 25. A crank 41 eccentrically arranged therewith is provided on the front side of the eccentric shaft 31. The crank 41 is rotatably connected to the connecting rod 14, and the eccentric shaft 31 is rotatably connected to the body 21. A guide device for guiding the slider body 12 is also provided on the front side of the body 21, and the slider body 12 is reciprocated up and down by cam-like movement. A power device for driving the flywheel 25 to rotate is provided on the rear side of the body 21.

[0032] Advantageously, an installation groove 45 is provided in the slider body 12 for installing a stamping die, and a T-shaped groove is also provided on the workbench 24 for installing the bottom die by using the T-shaped groove.

[0033] Advantageously, the adjusting device includes a lifting nut seat 61 movably arranged in the cross beam 16. A lifting screw rod 15 is in threaded engagement with the lifting nut seat 61. The lifting screw rod 15 is fixed to the upper side of the machine body 21. By rotating the lifting nut seat 61, the lifting screw rod 15 can be telescopically adjusted in the lifting nut seat 61.

[0034] Advantageously, a second locking nut 63 is in threaded engagement with the outer surface of the lifting screw rod 15. After the second locking nut 63 abuts against the lifting nut seat 61, it can play a limiting role on the lifting screw rod 15.

[0035] Advantageously, a ball head screw rod 13 is arranged in the connecting rod 14, and the bottom of the ball head screw rod 13 is movably connected to the slider body 12.

[0036] Advantageously, a threaded hole 42 is provided in the connecting rod 14. A ball head screw rod 13 is in threaded engagement with the threaded hole 42. A ball head 52 is arranged at the bottom of the ball head screw rod 13, and a spherical device movably connected to the ball head 52 is arranged in the slider body 12.

[0037] Advantageously, the spherical device includes a ball bowl 54 arranged in the slider body 12. A spherical cover plate 55 is arranged on the upper side of the ball bowl 54. A third locking nut 56 is in threaded engagement with the slider body 12. A first ball cavity 53 is arranged in the ball bowl 54, and a second ball cavity 51 is arranged in the spherical cover plate 55. The second ball cavity 51 and the first ball cavity 53 form a spherical structure for accommodating the rotation of the ball head 52. The third locking nut 56 abuts against and fixes the spherical cover plate 55 on the upper side of the ball bowl 54.

[0038] Advantageously, a conical cavity 57 is arranged in the third locking nut 56. A mating inclined surface 43 is arranged on the outer surface of the bottom of the ball head screw rod 13, and the mating inclined surface 43 moves and rotates in the conical cavity 57.

[0039] Advantageously, the guiding device includes a guide rail 23 arranged on the front side of the machine body 21, and the slider body 12 is in up-and-down sliding fit with the guide rail 23.

[0040] Advantageously, the power device includes a flywheel 25 power-connected to the eccentric shaft 31. A motor 18 is arranged on the rear side of the machine body 21. A motor runner 26 is power-connected to one side of the motor 18. A belt 27 is wound around the outer surfaces of the flywheel 25 and the motor runner 26, and the belt 27 power-connects the flywheel 25 and the motor runner 26.

[0041] Advantageously, a motor base plate 19 is provided on one side of the body 21, and the motor 18 is mounted on the motor base plate 19.

[0042] Advantageously, a brake bushing 38 is provided at the rear side of the body 21. The brake bushing 38 is arranged around the eccentric shaft 31. The brake bushing 38 is a prior art. The brake bushing 38 abuts against one side of the bushing 32.

[0043] Embodiment 2: On the basis of Embodiment 1, it further includes a clutch device and an operating lever device. The clutch is installed between the eccentric shaft 31 and the flywheel 25. The operating lever device is installed at the rear side of the body 21. By operating the operating lever device, the overrunning clutch is abutted to achieve the function of interrupting the power between the flywheel 25 and the eccentric shaft 31.

[0044] Advantageously, the clutch device includes an overrunning key clutch, a rotating key clutch, etc. The overrunning clutch includes a key block 82 provided on the outer surface of the eccentric shaft 31. The outer surface of the eccentric shaft 31 is further provided with a bushing 32 and a hexagonal cam 83. The bushing 32 and the hexagonal cam 83 are fixedly connected to the eccentric shaft 31 through the key block 82. A coupling 33 and a clutch outer sleeve 37 are further provided on the outer side of the hexagonal cam 83. A plurality of coupling forks 81 are provided at the rear side of the coupling 33. A roller 84 is provided between the coupling forks 81. The clutch outer sleeve 37 is rotatably arranged on the outer surfaces of the coupling forks 81 and the roller 84. The clutch outer sleeve 37 is fixedly connected and matched with the flywheel 25. A tension spring assembly is elastically connected between the bushing 32 and the coupling 33. A roller assembly is provided between the clutch outer sleeve 37, the coupling fork 81 and the hexagonal cam 83.

[0045] Advantageously, the tension spring assembly includes a second set screw 92 provided on one side of the coupling 33 and a first set screw 91 provided on one side of the bushing 32. A tension spring is elastically connected between the first set screw 91 and the second set screw 92. The tension spring bypasses from the left side of the device.

[0046] Beneficially, the roller assembly includes a plurality of coupling forks 81 disposed at the rear side of the coupling 33. A roller 84 is disposed between the coupling forks 81. The roller 84 is disposed between the inner side of the clutch housing 37 and the outer surface of the hexagonal cam 83. The hexagonal cam 83 has a hexagonal structure. When the sleeve 32 is abutted by the stopper 74, the clutch housing 37 rotates around the coupling forks 81 and the roller 84. At this time, the power of the flywheel 25 cannot be transmitted through the clutch housing 37. When the stopper 74 is disengaged from the coupling 33, due to the action of the tension spring, relative movement is generated between the coupling 33 and the coupling forks 81 with respect to the hexagonal cam 83. Then, the coupling forks 81 and the hexagonal cam 83 can push and squeeze the roller 84, so that the roller 84 abuts and is clamped on one side of the clutch housing 37, enabling the clutch housing 37 to transmit power to the hexagonal cam 83, the coupling forks 81, the coupling 33, and the sleeve 32, causing the eccentric shaft 31 to rotate. Then, the eccentric shaft 31 can drive the crank 41, the connecting rod 14, the ball screw 13, and the slider body 12 to perform periodic up and down movements, realizing the stamping process.

[0047] Beneficially, the operating lever device includes a handle shaft 71 disposed at the rear side of the machine body 21. A clutch handle body 73 is rotatably disposed on the outer surface of the handle shaft 71. A clutch handle 72 is disposed on one side of the clutch handle body 73. A stopper 74 is disposed on one side of the clutch handle body 73. After a person holds the clutch handle 72 by hand, the clutch handle body 73 and the stopper 74 rotate around the handle shaft 71, and the stopper 74 abuts against the sleeve 32 to restrict its rotation.

[0048] Beneficially, a connecting block 76 is disposed on one side of the machine body 21. A pressing column 75 is disposed below the clutch handle body 73. A spring is elastically disposed between the pressing column 75 and the connecting block 76. The spring elastically pushes the clutch handle 72 and the clutch handle body 73 upward, so that the stopper 74 remains in abutting engagement with the coupling 33.

[0049] This bench press utilizes the method of placing the flywheel 25 at the rear and then transmitting power through the front and rear settings of the eccentric shaft 31. And by setting the operating lever device perpendicular to the eccentric shaft 31 and having a right or left side, it is convenient for personnel to operate, and the flywheel 25 can prevent danger caused by personnel touching during operation.

[0050] The stamping die is installed in the installation groove 45 in the slider body 12. After the motor 18 operates, the motor runner 26 is driven to rotate. Under the action of the belt 27, the flywheel 25 rotates. Since the flywheel 25 can drive the eccentric shaft 31 to rotate through the overrunning clutch after rotation, when the eccentric shaft 31 makes a continuous rotary motion, under the action of the rotational cooperation connection between the crank 41 and the connecting rod 14, the ball head screw 13 and the slider body 12 are driven to move up and down periodically, realizing the stamping function.

[0051] During the movement process, the connecting rod 14 and the ball head screw 13 swing left and right, that is, they swing back and forth in the conical cavity 57 in cooperation with the inclined surface 43. And because the third locking nut 56 is in threaded fit connection with the slider body 12, and the second ball cavity 51 and the first ball cavity 53 form a structure for limiting the ball head 52, the slider body 12 can be driven to move up and down through the cooperation of the inclined surface 43 and the ball head 52, the third locking nut 56, the spherical cover plate 55 and the ball bowl 54.

[0052] After rotating the first locking nut 44, since the ball head screw 13 is in threaded fit connection with the threaded hole 42, and the ball head 52 is spherical, the ball head screw 13 can be rotated in the threaded hole 42 to realize the up and down adjustment function relative to the connecting rod 14, which is convenient for the slider body 12 to be adjusted up and down close to the bottom die after installing the stamping die.

[0053] The lifting nut seat 61 is movably arranged in the moving hole 62. Since the lifting nut seat 61 is in threaded fit connection with the lifting screw 15, after the lifting nut seat 61 rotates, the lifting screw 15 can move up and down in the lifting nut seat 61, so that the whole body 21 can move up and down.

[0054] When the operator presses the clutch handle body 72 downward, the pressing column 75 elastically squeezes the spring between it and the connecting block 76, so that the stop block 74 is disengaged from the abutting clamping with the coupling 33. Then, through the overrunning clutch, the power of the flywheel 25 can be transmitted to the eccentric shaft 31, making the eccentric shaft 31 rotate continuously.

[0055] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A precision bench press with a flywheel at the rear and capable of lifting, comprising a workbench (24), wherein a column (11) is arranged on the workbench (24), and a machine body (21) is slidably arranged on the outer surface of the column (11), characterized in that, A slider body (12) is provided on the front side of the body (21). A connecting rod (14) is provided on the upper side of the slider body (12). The connecting rod (14) is movably connected to the slider body (12). A flywheel (25) is provided on the rear side of the body (21). An eccentric shaft (31) is provided in the flywheel (25). The eccentric shaft (31) is longitudinally arranged front and rear. A crank (41) eccentrically arranged with the eccentric shaft (31) is provided on the front side of the eccentric shaft (31). The crank (41) is rotationally and cooperatively connected to the connecting rod (14). The eccentric shaft (31) is rotationally and cooperatively connected to the body (21).

2. The precision bench press with a rear-mounted flywheel that can be lifted, as described in claim 1, is characterized in that: A clutch device is provided between the flywheel (25) and the eccentric shaft (31). An operating rod device for power interruption of the clutch device is provided on the rear side of the body (21).

3. A precision bench press with a rear-mounted flywheel that can be lifted and lowered, characterized in that: A cross beam (16) is provided at the top of the column (11). An adjusting device for adjusting the height of the body (21) is provided between the body (21) and the cross beam (16). A guide rail (23) is further provided on the front side of the body (21). The slider body (12) is slidably and cooperatively connected to the guide rail (23) up and down. A power device for driving the flywheel (25) to rotate is provided on the rear side of the body (21).

4. A precision bench press with a rear-mounted flywheel that can be lifted and lowered, characterized in that: The adjusting device includes a lifting nut seat (61) movably provided in the cross beam (16). A lifting screw rod (15) is threadedly and cooperatively connected in the lifting nut seat (61). The lifting screw rod (15) is fixed to the upper side of the body (21).

5. A precision bench press with a flywheel at the rear and capable of lifting and lowering, as described in claim 1, characterized in that: A ball head screw rod (13) is provided in the connecting rod (14). The bottom of the ball head screw rod (13) is movably connected to the slider body (12).

6. The precision bench press with a rear-mounted flywheel that can be lifted and lowered according to claim 5, characterized in that: A threaded hole (42) is provided in the connecting rod (14). A ball head screw rod (13) is threadedly and cooperatively connected in the threaded hole (42). A ball head (52) is provided at the bottom of the ball head screw rod (13). A spherical device movably connected to the ball head screw rod (13) is provided in the slider body (12).

7. A precision bench press with a flywheel at the rear that can be lifted and lowered, characterized in that: The spherical device includes a ball bowl (54) provided in the slider body (12). A spherical cover plate (55) is provided on the upper side of the ball bowl (54). A third locking nut (56) is threadedly and cooperatively connected in the slider body (12). A first ball cavity (53) is provided in the ball bowl (54). A second ball cavity (51) is provided in the spherical cover plate (55). The second ball cavity (51) and the first ball cavity (53) are rotationally connected to the ball head (52). The third locking nut (56) presses and fixes the spherical cover plate (55) on the upper side of the ball bowl (54).

8. A precision bench press with a rear-mounted flywheel that can be lifted and lowered, characterized in that: The power device includes a motor (18) provided on the rear side of the body (21). A motor runner (26) is power-connected to one side of the motor (18). A belt (27) is wound around the outer surfaces of the flywheel (25) and the motor runner (26). The belt (27) power-connects the flywheel (25) and the motor runner (26).

9. A precision bench press with a rear-mounted flywheel that can be lifted and lowered, according to any one of claims 2-8, characterized in that: The clutch device includes an overrunning clutch, and the overrunning clutch includes a key block (82) disposed on the outer surface of the eccentric shaft (31). A sleeve (32) and a hexagonal cam (83) are further disposed on the outer surface of the eccentric shaft (31). The sleeve (32) and the hexagonal cam (83) are fixedly connected to the eccentric shaft (31) through the key block (82). A coupling (33) and a clutch housing (37) are further disposed outside the hexagonal cam (83). A plurality of coupling forks (81) are disposed at the rear side of the coupling (33). A roller (84) is disposed between the coupling forks (81). The clutch housing (37) is rotatably disposed on the outer surfaces of the coupling forks (81) and the roller (84). The clutch housing (37) is fixedly and cooperatively connected to the flywheel (25). A tension spring assembly is elastically connected between the sleeve (32) and the coupling (33).

10. A precision bench press with a rear-mounted flywheel that can be lifted and lowered, according to any one of claims 2-8, characterized in that: The operating lever device includes a handle shaft (71) disposed at the rear side of the machine body (21). A clutch handle body (73) is rotatably disposed on the outer surface of the handle shaft (71). A clutch handle (72) is disposed on one side of the clutch handle body (73). A stop block (74) is disposed on one side of the clutch handle body (73).

Images