Safety failure alarm device for roller type overrun clutch of small press

Abstract

The utility model discloses a safety failure alarm device for a roller type overrun clutch of a small press machine, which comprises a machine body, a crankshaft is rotatably arranged on the machine body, a flywheel is fixedly arranged on the outer surface of the crankshaft, and the roller type overrun clutch is arranged between the outer surface of the crankshaft and the flywheel. The machine body is further rotationally provided with a clutch control mechanism used for achieving a clutch function on the roller type overrun clutch, one side of the machine body is provided with a sensing assembly used for recognizing whether the clutch control mechanism and the roller type overrun clutch are clamped in place or not, the clutch control mechanism comprises a control rod, and the outer surface of the coupling is provided with a coupling notch. When the stop pin on the clutch handle body abuts against the circumferential face of the coupling and does not abut against the interior of a notch of the coupling, the proximity switch and the induction block conduct continuous induction, the alarm in the external space gives out continuous buzzing alarm sound, an operator is reminded to stop working immediately, and therefore the damage of the press machine to the operator is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a press equipment technical field, concretely is a kind of safety fault alarm device of roller type overrunning clutch of small press. BACKGROUND

[0002] Roller type overrunning clutch is widely used in small press because of its compact structure and convenient operation of disengaging and engaging. However, roller type overrunning clutch has always had the phenomenon of false disengagement, that is, the blocking pin on the disengaging and engaging control mechanism does not stop in the step gap of the coupling in the overrunning clutch, but stops on the involute flange surface on the outermost side of the step gap of the coupling. At this time, the coupling stops rotating and the overrunning clutch is disengaged, and the blocking pin is pressed on the involute flange surface on the outer side of the coupling. However, it is not reliable to rely on the elastic force of the compression spring at the lower end of the clutch handle to stop by friction. Since the flywheel sleeve is connected with the overrunning clutch outer sleeve fixed on the crankshaft, the flywheel sleeve always rotates with the coupling and the roller. When the flywheel rotates, the shaking caused by the flywheel and the friction between the flywheel side and the coupling can cause the coupling to rotate downward under the pulling of the clutch spring, at which time the overrunning clutch is engaged, the press is working, and the sliding block is punching downward. However, this happens when the operator thinks that the press has stopped working, which can easily cause safety accidents such as hand injury. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem of providing a safety fault alarm device for roller type overrunning clutch of small press.

[0004] The utility model is implemented by the following technical solutions: the safety fault alarm device for roller type overrunning clutch of small press comprises a machine body, a crankshaft rotatingly arranged on the machine body, a flywheel movably connected to the outer surface of the crankshaft, and a roller type overrunning clutch arranged between the outer surface of the crankshaft and the flywheel. The machine body further comprises a disengaging and engaging control mechanism for engaging and disengaging the roller type overrunning clutch, an inductive component arranged on one side of the machine body for identifying whether the disengaging and engaging control mechanism is clamped in place with the roller type overrunning clutch, a control rod of the disengaging and engaging control mechanism, and a coupling of the roller type overrunning clutch, wherein the outer surface of the coupling is provided with a coupling gap.

[0005] In a further technical solution, the inductive component comprises a proximity switch arranged on the machine body, and the control rod is provided with an inductive block on one side.

[0006] In a further technical solution, the utility model further comprises an alarm arranged in an external space, and the proximity switch is electrically connected to the alarm.

[0007] Further technical solutions, the side of the fuselage is provided with an induction support, and the proximity switch is arranged in the induction support.

[0008] Further technical solutions, the clutch control mechanism comprises a stop pin arranged on one side of the control rod.

[0009] Further technical solutions, the clutch control mechanism further comprises a clutch handle body arranged on one side of the control rod, the clutch handle body is rotationally connected with the fuselage through a handle body shaft, and the clutch handle body is internally provided with a handle body return compression spring.

[0010] Further technical solutions, one side of the clutch handle body is provided with a blocking shell, and the stop pin is arranged in the blocking shell.

[0011] Further technical solutions, the side of the fuselage is further provided with a traction electromagnetic block, and an elastic spring is elastically connected between one end of the control rod and the telescopic rod of the traction electromagnetic block.

[0012] Further technical solutions, the roller type overrunning clutch further comprises a shaft sleeve, a shaft coupling and a star wheel, the shaft sleeve and the star wheel are sleeved on the outer surface of the crankshaft, the shaft sleeve and the star wheel are power-connected with the crankshaft through a flat key, the shaft coupling is sleeved on the outer side of the shaft sleeve and the star wheel, the upper side of the shaft sleeve and the lower side of the shaft coupling are provided with tension spring screws, the tension spring screws are elastically connected with clutch tension springs, the outer side of the shaft coupling is provided with a clutch outer sleeve, the clutch outer sleeve is fixedly connected with the flywheel, one side of the shaft coupling is provided with a plurality of pawls, the pawls extend to the outer side of the star wheel, rollers are arranged between the pawls, and the rollers are located on the outer side of the star wheel.

[0013] Further technical solutions, the clutch tension spring is arranged on the outer sides of the shaft sleeve and the shaft coupling from the rear side, and is elastically connected between the shaft sleeve and the shaft coupling, so that the shaft sleeve and the shaft coupling are elastically tensioned.

[0014] The beneficial effects of the utility model are: 1. By arranging a shaft coupling notch on the outer surface of the shaft coupling, whether the clutch control mechanism and the induction assembly are in a staggered state is utilized to judge whether the stop pin on the clutch control mechanism and the shaft coupling notch are clamped in place, so that personnel can judge whether they are in a dangerous state.

[0015] 2. An induction block is arranged on the control rod, an induction support is arranged on the fuselage, a proximity switch is fixed on the induction support, when the stop pin on the clutch handle body is in contact with the circumferential surface of the shaft coupling and the shaft coupling is not moved, the proximity switch and the induction block are in induction, the alarm in the external space emits a continuous buzzing alarm sound, reminding the operator to stop working immediately, so that the harm of the press machine to the operator is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] For ease of illustration, the utility model is described in detail by the following specific embodiments and drawings.

[0017] Figure 1 The whole structure schematic diagram of the roller type overrunning clutch safety fault alarm device of a small-sized press machine of the utility model is shown in the figure.

[0018] Figure 2 The whole structure schematic diagram of the roller type overrunning clutch safety fault alarm device of a small-sized press machine of the utility model is shown in the figure. Figure 1 The partial enlarged three-dimensional structure schematic diagram of the equipment is shown in the figure.

[0019] Figure 3 The structure schematic diagram of the flywheel is shown in the figure. Figure 1 The structure schematic diagram of the flywheel is shown in the figure.

[0020] Figure 4 The schematic diagram of A-A direction is shown in the figure. Figure 3 The schematic diagram of A-A direction is shown in the figure.

[0021] Figure 5 The schematic diagram of B-B direction is shown in the figure. Figure 3 The schematic diagram of B-B direction is shown in the figure.

[0022] Figure 6 The side view structure schematic diagram of the equipment under normal working state is shown in the figure. Figure 1 The side view structure schematic diagram of the equipment under normal working state is shown in the figure.

[0023] Figure 7 The side view structure schematic diagram of the equipment under fault state is shown in the figure. Figure 1 The side view structure schematic diagram of the equipment under fault state is shown in the figure.

[0024] Figure 8 The schematic diagram of the coupling and the stop pin under normal state is shown in the figure.

[0025] Figure 9 The schematic diagram of the coupling and the stop pin under the first fault state is shown in the figure.

[0026] Figure 10 The schematic diagram of the coupling and the stop pin under the second fault state is shown in the figure.

[0027] In the figure, flywheel 11, clutch outer sleeve 12, roller 13, star wheel 14, crankshaft 16, coupling 17, shaft sleeve 18, induction support 19, proximity switch 21, induction block 22, tension spring 24, traction electromagnetic block 25, operating lever 26, flat key 31, tension spring screw 32, clutch tension spring 33, stop pin 41, stop shell 42, clutch handle body 43, coupling notch 44, handle body shaft 45, handle body reset compression spring 46. DETAILED DESCRIPTION

[0028] As Figures 1-10 shown, the utility model is described in detail, for convenience of description, now the following said direction is defined as follows: the following said up-down, left-right, front-back direction and Figure 1The up and down, left and right, front and back directions of the projection relationship are consistent, the safety fault alarm device of the roller type overrunning clutch of the small-sized press machine, which comprises a machine body, a crankshaft 16 rotatably arranged on the machine body, a flywheel 11 movably connected to the outer surface of the crankshaft 16, and a roller type overrunning clutch arranged between the outer surface of the crankshaft 16 and the flywheel 11, wherein the roller type overrunning clutch is a prior art, and a clutch control mechanism for controlling the clutch function of the roller type overrunning clutch is also rotatably arranged on the machine body, and an inductive assembly for identifying whether the clutch control mechanism is clamped in place with the roller type overrunning clutch is arranged on one side of the machine body, wherein the clutch control mechanism comprises a control rod 26, the roller type overrunning clutch comprises a shaft coupling 17, the outer surface of the shaft coupling 17 is provided with a shaft coupling gap 44, and the clutch control mechanism is in a normal working state only when the clutch control mechanism is clamped in the shaft coupling gap 44, at this time, the clutch control mechanism and the inductive assembly are in a staggered state, and when the clutch control mechanism cannot be clamped in place with the shaft coupling gap 44, the clutch control mechanism and the inductive assembly are in a relative state.

[0029] Beneficially, the inductive assembly comprises a proximity switch 21 arranged on the machine body, and an inductive block 22 is arranged on one side of the control rod 26, wherein the proximity switch 21 and the inductive block 22 are in a staggered state after the clutch control mechanism is clamped in place with the overrunning clutch, and the proximity switch 21 and the inductive block 22 are in a relative state when the clutch control mechanism cannot be clamped in place with the overrunning clutch, at this time, a fault inductive alarm signal is transmitted.

[0030] Beneficially, the alarm device is arranged in an external space and is electrically connected with the proximity switch 21.

[0031] Beneficially, an inductive support 19 is arranged on one side of the machine body, the proximity switch 21 is arranged in the inductive support 19, and the swing of the control rod 26 around the handle body shaft 45 can drive the inductive block 22 to approach or leave the proximity switch 21.

[0032] Beneficially, the clutch control mechanism comprises a blocking pin 41 arranged on one side of the control rod 26, and the blocking pin 41 is used for clamping with the shaft coupling gap 44.

[0033] Beneficially, the clutch control mechanism further comprises a clutch handle body 43 arranged on one side of the control rod 26, the clutch handle body 43 is provided with a blocking shell 42 on one side, the blocking pin 41 is arranged in the blocking shell 42, the clutch handle body 43 is rotatably connected with the machine body through a handle body shaft 45, a handle body reset compression spring 46 is arranged at the lower end of the clutch handle body 43, and the handle body reset compression spring 46 is elastically connected with the machine body.

[0034] Beneficially, one side of the fuselage is also provided with a traction electromagnetic block 25, which is a prior art that can use power to make the telescopic rod inside it move up and down, and the one end of the control rod 26 is elastically connected with the telescopic rod of the traction electromagnetic block 25 through the tension spring 24. After the traction electromagnetic block 25 works, it can pull the control rod 26 to move towards the traction electromagnetic block 25 through the tension spring 24, and then make the clutch control mechanism and the roller type overrunning clutch separate. When the traction electromagnet 25 loses power, the handle body reset spring 46 at the lower end of the clutch handle body 43 rebounds to push the clutch handle body 43 to rotate and reset, so that the blocking pin 41 is in abutment with the coupling 17.

[0035] Beneficially, the roller type overrunning clutch further comprises a shaft sleeve 18, a coupling 17 and a star wheel 14, the shaft sleeve 18 and the star wheel 14 are sleeved on the outer surface of the crankshaft 16, and the shaft sleeve 18 and the star wheel 14 are connected with the crankshaft 16 through the flat key 31. The coupling 17 is sleeved on the outer side of the shaft sleeve 18 and the star wheel 14. The upper side of the shaft sleeve 18 and the lower side of the coupling 17 are provided with tension spring screws 32, and the tension spring screws 32 are elastically connected with the clutch tension spring 33. The clutch tension spring 33 is arranged on the outer side of the shaft sleeve 18 and the coupling 17 from the rear side, and is elastically connected between the shaft sleeve 18 and the coupling 17, so as to elastically tension the shaft sleeve 18 and the coupling 17. The outer side of the coupling 17 is provided with the clutch sleeve 12, and the clutch sleeve 12 is connected and fixed with the flywheel 11. The coupling 17 is provided with a plurality of pawls on one side, the pawls extend into the outer side of the star wheel 14, and the pawls are provided with the roller 13 between them, and the roller 13 is located on the outer side of the star wheel 14.

[0036] When the press enters the working state, the motor drives the flywheel 11 to rotate, and at this time the crankshaft 16 stops, the coupling gap 44 of the coupling 17 is in abutment with the blocking pin 41 in the clutch control mechanism, and the roller type overrunning clutch is in a disengaged state. The flywheel 11 idles relative to the crankshaft 16. When the press enters the single punching mode, the control rod 26 is pulled by the tension spring 24 on one side of the traction electromagnet 25, which drives the clutch handle body 43 to swing downward, and the blocking pin 41 is separated from the coupling 17. The coupling 17 rotates under the pull of the clutch tension spring 33, and at the same time the coupling 17 pawl drives the roller 13 to rotate together to combine with the star wheel 14 and the clutch sleeve 12, so that the flywheel 11 drives the roller type overrunning clutch and the crankshaft 16 to rotate together. At this time, the clutch handle body 43 resets, and when the coupling 17 rotates through 360 degrees, the blocking pin 41 collides with the stepped surface on the coupling 17, the coupling 17 is driven to separate the roller 13 from the clutch sleeve 12 and the star wheel 14 in the flywheel 11. At this time, the flywheel 11 idles, and the crankshaft 16 stops rotating.

[0037] In normal working state, the blocking pin 41 is combined with the joint gap 44 of the joint 17, the roller type overrunning clutch is in disengaged state, and the press flywheel 11 is in idling. However, there is also a state that the blocking pin 41 is not combined with the joint gap 44 of the joint 17, and the blocking pin 41 is pressed against the circumferential surface of the joint 17 by the elastic force of the handle body reset spring 46, and the clutch is in disengaged state by friction force. This state is the most dangerous state. On the one hand, the operator thinks that the press has stopped and can take and install workpieces, which causes misunderstanding. Actually, since the flywheel 11 is always idling, the generated shaking and friction with the side surface of the joint 17 can make the joint 17 rotate by overcoming the friction between the joint 17 and the blocking pin 41 under the pulling of the clutch spring 33, so as to drive the ball to engage with the star wheel 14 and the clutch sleeve 12. In this way, the flywheel 11 drives the clutch and the crankshaft 16 to rotate and push the slide block up and down for stamping. Since the stamping action is unexpected for the operator, the operator of the press can be hurt at any time.

[0038] The inductive block 22 is arranged on the operating lever 26, and the inductive bracket 19 is arranged on the machine body and fixed with the proximity switch. When the blocking pin 41 on the clutch handle body 43 is pressed against the circumferential surface of the joint 17, the proximity switch 21 and the inductive block 22 are inducted, the alarm in the external space continuously emits beeping alarm sound, reminding the operator to stop working immediately, so that the harm of the press to the operator is effectively avoided.

[0039] In actual situation, the personnel can also directly judge whether the proximity switch 21 and the inductive block 22 are in relative state by naked eyes, to judge the dangerous situation. At this time, the alarm can also not be used.

[0040] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any change or replacement without creative labor is covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope defined in the claims.

Claims

1. A roller-type overrunning clutch safety fault alarm device for a small press, comprising a machine body, a crankshaft (16) rotatably provided on the machine body, a flywheel (11) fixedly provided on the outer surface of the crankshaft (16), and a roller-type overrunning clutch provided between the outer surface of the crankshaft (16) and the flywheel (11), characterized in that: A clutch operating mechanism for engaging and disengaging the roller-type overrunning clutch is also rotatably provided on the fuselage. A sensing component for identifying whether the clutch operating mechanism is engaged and disengaged with the roller-type overrunning clutch is provided on one side of the fuselage. The clutch operating mechanism includes an operating lever (26), and the roller-type overrunning clutch includes a coupling (17). A coupling notch (44) is provided on the outer surface of the coupling (17).

2. The roller-type overrunning clutch safety fault alarm device for a small press according to claim 1, characterized in that: The induction component comprises a proximity switch (21) arranged on the machine body, and a sensing block (22) is arranged on one side of the joystick (26).

3. The roller-type overrunning clutch safety fault alarm device for a small press according to claim 2, characterized in that: It also includes an alarm device arranged in the external space, and the proximity switch (21) is electrically connected to the alarm device.

4. The roller-type overrunning clutch safety fault alarm device for a small press according to claim 2, characterized in that: A sensing bracket (19) is provided on one side of the fuselage, and the proximity switch (21) is provided in the sensing bracket (19).

5. The roller-type overrunning clutch safety fault alarm device for a small press according to claim 1, characterized in that: The clutch operating mechanism comprises a stop pin (41) arranged on one side of the operating rod (26).

6. The roller-type overrunning clutch safety fault alarm device for a small press according to claim 5, characterized in that: The clutch operating mechanism further comprises a clutch handle body (43) arranged on one side of the operating rod (26); the clutch handle body (43) is rotationally connected to the machine body via a handle body shaft (45); and the clutch handle body (43) is internally provided with a handle body reset compression spring (46).

7. The roller-type overrunning clutch safety fault alarm device for a small press according to claim 6, characterized in that: A stop shell (42) is provided on one side of the clutch handle body (43), and the stop pin (41) is provided on one side of the stop shell (42).

8. The roller-type overrunning clutch safety fault alarm device for a small press according to claim 1, characterized in that: A traction electromagnetic block (25) is also provided on one side of the fuselage, and a tension spring (24) is elastically connected between one end of the operating rod (26) and the telescopic rod of the traction electromagnetic block (25).

9. A safety fault alarm device for a roller overrunning clutch of a small press according to any one of claims 1 to 8, characterized in that: The roller overrunning clutch further comprises a sleeve (18), a coupling (17) and a star wheel (14), wherein the sleeve (18) and the star wheel (14) are sleeved on the outer surface of the crankshaft (16), the sleeve (18) and the star wheel (14) are connected to the crankshaft (16) by a flat key (31), the coupling (17) is sleeved on the outer side of the sleeve (18) and the star wheel (14), and the upper side of the sleeve (18) and the lower side of the coupling (17) are provided with There are tension spring screws (32), and a clutch tension spring (33) is elastically connected between the tension spring screws (32). A clutch jacket (12) is provided on the outside of the coupling (17), and the clutch jacket (12) is fixedly connected to the flywheel (11). A plurality of pusher dogs are provided on one side of the coupling (17), and the pusher dogs extend into the outside of the star wheel (14). Rollers (13) are provided between the pusher dogs, and the rollers (13) are located on the outside of the star wheel (14).

10. The roller-type overrunning clutch safety fault alarm device for a small press according to claim 9, characterized in that: The clutch tension spring (33) is wound around the shaft sleeve (18) and the outer side of the coupling (17) from the rear side, and is elastically connected between the shaft sleeve (18) and the coupling (17), so that the shaft sleeve (18) and the coupling (17) are elastically tightened.

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