CN108237194B

CN108237194B - Thread rolling machine

Info

Publication number: CN108237194B
Application number: CN201611203403.1A
Authority: CN
Inventors: 饶海生; 王明波
Original assignee: Ningbo Hengyuan Shaft Industry Co ltd
Current assignee: Ningbo Hengyuan Shaft Industry Co ltd
Priority date: 2016-12-23
Filing date: 2016-12-23
Publication date: 2020-06-02
Anticipated expiration: 2036-12-23
Also published as: CN108237194A

Abstract

The invention discloses a thread rolling machine, which solves the problems that a feeding station of the thread rolling machine is far away from a processing station, the conveying length is long, the occupied space is large, the feeding efficiency is low, and the processing efficiency is not high; when one side of the workpiece at the bottom of the trough is pushed out of the feeding device and the turnover plate to rotate by being attached to one end of the other side of the workpiece under the action of the ejection plate, the feeding device and the machining station are compactly matched, the occupied area is small, and the feeding efficiency is high.

Description

Thread rolling machine

Technical Field

The invention relates to a thread rolling machine for processing standard parts, in particular to a thread rolling machine with efficient feeding and processing functions.

Background

At present, a thread rolling machine is generally adopted when standard parts and non-standard parts such as screws, bolts, harness cords and the like are produced. The main structure of the thread rolling machine comprises a machine body, a pair of thread rolling shafts and a thread rolling shaft seat for positioning the thread rolling shafts on the machine body, and the thread rolling shaft seat is sleeved with a thread rolling die for production. The equipment is characterized in that the main axes of the two thread rolling shafts are parallel and are positioned on the same horizontal plane, however, because the pull rod on the cutter shaft fixing seat is positioned on the inner side of the fixing seat, knurling is carried out by adopting a manual feeding mode, and the thread rolling shafts are placed into a product by being equipped with an operator in a handheld mode. Knurling efficiency is very low, manual work often happens in the production process and is not in place, so that the product quality is unstable, and about 5% of waste reports are generated.

For example, chinese patent with publication number CN104148877B discloses a full-automatic knurling system for steel pipes, which comprises a linear vibration feeding machine, a first feeding cylinder, a material passage, a first magnetic cylinder, a material stirring block, a material receiving box, a thread rolling machine, a thread rolling wheel travel switch, a thread rolling wheel and a second magnetic cylinder, and is characterized in that two groups of thread rolling wheels are installed in the middle of the top of the thread rolling machine. But this kind of annular knurl system's material loading station is far away with the processing station distance, and conveying length is long, and not only occupation space is big, and material loading efficiency is low moreover, and then the not high problem of machining efficiency.

Disclosure of Invention

The invention aims to provide a feeding device which is compactly matched with a processing station, so that the occupied area is small and the feeding efficiency is high.

In order to solve the problems, the invention provides a thread rolling machine which comprises a rack, wherein a processing station consisting of a pair of thread rolling shafts is arranged on the rack, a feeding device is arranged at a feeding end close to the thread rolling shafts, the feeding device comprises two oppositely and vertically arranged base plates, a long-strip-shaped blanking groove is formed in the inner sides of the base plates, a material placing seat is connected with the base plates, a discharging channel is formed at the bottom of the base plates, an ejection plate capable of horizontally reciprocating is arranged in the discharging channel, a turnover plate extending to the bottom of the discharging channel is arranged at the front end of the base plates, the top of the turnover plate is pivoted at the front end of the base plates, and a feeding plate for feeding workpieces in the material placing seat into the blanking groove is rotatably arranged between the two material placing seats; when the workpiece at the bottom of the blanking slot is pushed out of the feeding device by the ejector plate positioned on one side of the workpiece, the turnover plate rotates to be attached to one end of the other side of the workpiece, and the workpiece falls into a position to be positioned at the front end of the same straight line of the machining station and is pushed into the machining station by the driving device.

By adopting the technical scheme, the feeding device is vertically arranged to reduce the occupied area on the plane, the feeding plate is arranged to conveniently and simply place the workpiece between the material placing seats and feed the workpiece into the blanking groove through the feeding plate, so that the workpiece is more conveniently placed, when the workpieces are stacked in the blanking groove one by one, one side of the workpiece at the bottom of the blanking groove is a horizontally movable ejection plate, the other side of the workpiece is a turnover plate which realizes the limitation of the workpiece which is not yet blanked, the workpieces positioned at the bottom of the blanking groove are ejected one by one through the ejection plate in the blanking process, the ejected workpieces fall under the action of gravity, enter the undetermined station to perform the preset position adjustment on the workpiece to be entered into the processing station, and finally, the workpiece is pushed into the processing station, and the workpieces in the invention are all positioned in the same vertical direction from the feeding device to the undetermined station, the device has the effects of tight matching among all working procedures, simplified process and accurate feeding.

As a further improvement of the invention, a guide roller is arranged between the material waiting station and the substrate, the material waiting station comprises a height limiting rod which is arranged below the guide roller and can horizontally move to a workpiece falling position, the driving device comprises a first ejector rod which is arranged opposite to the processing station and pushed by a first air cylinder, a second ejector rod which is arranged opposite to the height limiting rod and pushed by a second air cylinder, and a bayonet used for clamping the workpiece is arranged at the front end of the second ejector rod.

Through adopting above-mentioned technical scheme, make the workpiece can more smoothly fall into the undetermined station of below through the deflector roll to height gag lever post in the undetermined station has restricted the height of workpiece, promote the second ejector pin by the second cylinder again and block into the second ejector pin with the workpiece card, the position of bayonet socket is on same line with the position of processing station, after having played to make workpiece and processing position aim at, carries out the processing of screw thread in with work piece horizontal propelling movement to the processing station by first ejector pin again.

As a further improvement of the invention, a horizontal limiting rod is also arranged on the material waiting station, and the horizontal limiting rod and the second top rod are arranged in a staggered manner.

Through adopting above-mentioned technical scheme, through the setting of horizontal gag lever post, further make the work piece that falls into in waiting to expect the station obtain preliminary spacing on horizontal position, and horizontal gag lever post and second ejector pin dislocation mutually, can make the second ejector pin can not cause structural conflict after ejecting spacing, make the work piece block into more easily at the screens of second ejector pin.

As a further improvement of the present invention, a third cylinder is disposed at the rear end of the base plate, a piston rod of the third cylinder is connected to a driving seat, and the ejector plate and the height limiting rod are both disposed at the front end of the driving seat.

Through adopting above-mentioned technical scheme, through being provided with the third cylinder, and then realized that liftout plate and high gag lever post homoenergetic realize the drive in step, mechanical structure joins in marriage with compacter inseparable, avoids appearing the problem that the work piece mistake that appears asynchronous falls the bottom.

As a further improvement of the invention, a material placing plate which is obliquely and downwardly arranged towards the workpiece feeding direction is arranged inside the material placing seat, the feeding plate is pivoted below the rear end of the material placing plate, and a driving rod which is abutted against the bottom of the feeding plate is vertically arranged on the driving seat.

Through adopting above-mentioned technical scheme, through being provided with the flitch of putting of slope, played the work piece of putting in the flitch and can be more convenient enter into the charging chute in, through the upset of the dry realization of drive putting the flitch, make the structure compacter.

As a further improvement of the invention, the top of the driving rod and the end of the feeding plate are provided with bearings.

Through adopting above-mentioned technical scheme, the top of actuating lever is used for conflicting with the bottom of delivery sheet to realize the upset of delivery sheet, and the top of actuating lever is provided with the bearing, and then has realized that the top of actuating lever adds and is equipped with the bearing and realize more smooth and easy slip in the delivery sheet bottom.

As a further improvement of the invention, the top of the turnover plate is provided with a balance weight.

Through adopting above-mentioned technical scheme, through being provided with the balancing piece, because the returning face plate is sent out and overturns for the bottom by the liftout plate, and is provided with the balancing piece and has played the equilibrium of holistic power, can realize more stable rotation in the middle of the upset process.

As a further improvement of the invention, a limit plate which can be abutted against the front end of the base plate is fixedly arranged at the outer side of the turnover plate at intervals.

Through adopting above-mentioned technical scheme, through being provided with the limiting plate, after the upset board outwards overturns, reply to initial position by the effect of gravity, so be provided with the limiting plate and can realize avoiding the damage that the upset board caused at the too big striking base plate in the middle of replying the process.

As a further improvement of the invention, a material supporting rod is arranged between the two thread rolling shafts.

Through adopting above-mentioned technical scheme, through being provided with the frame material pole, the frame material pole has played spacing in the position to entering into the work piece between the thread rolling axle soon, avoids the off tracking of work piece.

As a further improvement of the invention, the frame is connected with a blanking plate which is obliquely arranged downwards at the processing station, and a collecting bucket is arranged below the blanking plate.

Through adopting above-mentioned technical scheme, through being provided with the collecting vessel, the work piece after can realizing processing is concentrated and is collected.

Drawings

FIG. 1 is an overall schematic view of a thread rolling machine;

FIG. 2 is a first state diagram of the feeding device;

FIG. 3 is a second state diagram of the feeding device;

FIG. 4 is another side view of the second state diagram of the feeding device;

fig. 5 is a schematic view of a pending station.

In the figure, 1, a frame; 11. a first connecting plate; 12. a second connecting plate; 13. a third connecting plate; 14. a horizontal plate; 15. a blanking plate; 16. a thread rolling shaft; 17. a motor shaft; 2a, a feeding device; 2b, processing stations; 2. a substrate; 21. a charging chute; 22. a material placing seat; 221. placing a material plate; 23. rotating the rod; 24. a rotating shaft; 25. a feeding plate; 26. a turnover plate; 261. a counterbalance; 262. a limiting plate; 3. a driving seat; 31. a third cylinder; 32. a base; 33. a drive rod; 34. ejecting the plate; 35. a height limiting rod; 4. a position to be determined; 41. a horizontal limiting rod; 42. a first ejector rod; 421. a first cylinder; 43. a second ejector rod; 431. a second cylinder; 44. a material supporting rod; 5. a base plate; 51. a discharge channel; 6. a bearing; 7. a collection barrel; 8. a guide roller; 9. and (5) a workpiece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to the attached drawing 1, the thread rolling machine comprises a frame 1, wherein a pair of thread rolling shafts 16 are arranged in the frame 1, the thread rolling shafts 16 are driven by a motor shaft 17 of a motor, a gap for placing a workpiece 9 is formed between the thread rolling shafts 16 to form a machining station 2b, one end, back to the motor, of each thread rolling shaft 16 is a station for feeding the workpiece 9 into the machining station through a feeding device 2a, a discharging plate 15 which is obliquely and downwards arranged is arranged below the machining station 2b, and after threads are turned, the workpiece 9 is discharged through the discharging plate 15 under the action of gravity and falls into a collecting barrel 7 below the discharging plate 15.

Referring to fig. 2 to 4, the following specifically describes the feeding device 2a of the thread rolling machine: the automatic thread rolling machine is characterized in that a first connecting plate 11 is arranged on the machine frame 1 above the thread rolling shaft 16, the first connecting plate 11 is arranged in parallel with the axis of the thread rolling shaft 16, a plurality of strip-shaped through holes are formed in the first connecting plate 11, the first connecting plate 11 extends to the outer side of the machine frame 1, two base plates 2 are fixed on the first connecting plate 11, the two base plates 2 are fixed on the first connecting plate 11 through the threaded holes in a penetrating mode through screws, the two base plates 2 are oppositely arranged, the direction of the base plates 2 is perpendicular to the axis of the thread rolling shaft 16, and the distance between the two base plates 2 is approximately equal to the length of a workpiece 9. A second connecting plate 12 which faces vertically downwards is arranged at the tail end of the first connecting plate 11, a horizontal plate 14 is arranged on the second connecting plate 12, a bottom plate 5 is arranged at the position, extending to the lower part of the base plate 2, of the horizontal plate 14, and a discharging channel 51 for the workpiece 9 to penetrate is formed between the bottom plate 5 and the base plate 2.

The medial surface at every base plate 2 all is provided with elongated charging chute 21, and the clearance in every charging chute 21 only can supply a work piece 9 to place, can realize that a whole row of work piece 9 is arranged in the middle of charging chute 21 with the form that stacks to it is spacing inside charging chute 21, avoid the outside that the equipment falls to the mistake. The material placing seat 22 is integrally arranged at the rear end of each base plate 2, the bottom of the material placing seat 22 is an inclined plane and inclines downwards towards the transportation direction of the workpiece 9, the inclined material placing plate 221 parallel to the bottom is arranged inside the material placing seat 22, a feeding plate 25 is arranged in a gap between the two material placing plates 221, a hollow rotating part is arranged at the bottom of the material placing seat 22, a rotating shaft 24 perpendicular to the feeding plate 25 is arranged at the tail end of the feeding plate 25, the rotating shaft 24 penetrates through the rotating part, the feeding plate 25 can rotate between the two material placing plates, the material placing seat can be used for jacking and placing the workpiece 9 between the material placing plates, and further, a bearing 6 is arranged at the front end of the feeding plate 25 and can play a role in further guiding the blanking of the workpiece 9.

The middle part height position at the front end of base plate 2 also all is provided with the rotation piece, wear to be equipped with a axis of rotation 24 in rotating the piece, axis of rotation 24 is fixed mutually with a returning face plate 26, the central authorities of axis of rotation 24 are arranged in to returning face plate 26, and the width is less than the width between the front end of two base plates 2, returning face plate 26 can paste the surface of overlapping the placing in work piece 9, and the bottom of returning face plate 26 extends to the surface of bottom plate 5, and then can play and carry on spacingly to the work piece 9 that is arranged in discharging channel 51.

Further, the middle part of the upper end of the turnover plate 26 is obliquely and upwards provided with a balance block 261, the balance block 261 and the horizontal direction are inclined at an angle of 30-45 degrees, and then the turnover plate can be turned over more stably in the turnover process of the turnover plate 26. And the front end surface of returning face plate 26 is provided with a limiting plate 262 through the screw rod, and the length of limiting plate 262 is greater than the interval between two base plates 2 to extending to two base plates 2 department and being provided with the screw rod, and then when returning face plate 26 upset when the tight department of pasting as for work piece 9 in the middle of the rotation process, the screw rod on the limiting plate 262 is hugged closely with the front end of base plate 2, and then has realized spacingly, avoids causing too big impact to work piece 9.

An ejector plate 34 is arranged on the bottom plate 5, and the ejector plate 34 can horizontally reciprocate to horizontally eject the workpiece 9 in the discharge channel 51.

Referring to fig. 5, a pending station 4 is disposed below the discharging channel 51, the pending station 4 and the discharging channel 51 are transited by a guide roller 8, the guide roller 8 may be a circular arc-shaped guide roller 8 or an inclined guide roller 8, in the embodiment, an inclined guide roller 8 is selected, a height limiting rod 35 is arranged below the guide roller 8, the height limiting rod 35 can be horizontally pushed forwards while the workpiece 9 falls down, further limit the falling workpiece 9 in height, and a L-shaped horizontal limiting rod 41 is fixed at the front section of the base plate 2, the front end of the horizontal limiting rod 41 is vertically arranged downwards, the bottommost end of the horizontal limiting rod 41 is lower than the bottom end of the height limiting rod 35, the horizontal limiting rod 41 can limit the horizontal position of the workpiece 9, the height-restricting plate 262 and the horizontal restricting rod 41 can be kept on the same line as the machining position of the machining station 2b preliminarily.

Further, a driving device is arranged in the material waiting station, the driving device comprises a first ejector rod 42 which is arranged opposite to the processing station 2b and pushed by a first air cylinder 421, the position of the first ejector rod 42 and the position of the processing station 2b are in the same line, a second ejector rod 43 which is arranged opposite to the limiting rod and pushed by a second air cylinder 431 is arranged, the second ejector rod 43 is arranged in a staggered mode in advance of the horizontal limiting rod 41, a bayonet (not shown in the figure) is arranged at the front end of the second ejector rod 43, the bayonet is a front end opening for clamping the workpiece 9, and when the second ejector rod 43 moves to the forefront end, the bayonet and the position of the processing station 2b are in the same line. A Y-shaped material holding rod 44 is arranged at the center of the front end of the thread rolling shaft 16, so that the workpiece 9 can enter the thread rolling shaft 16 after being aligned, and the stability can be kept in the processing process of the thread rolling shaft 16.

Still be provided with third connecting plate 13 at the front end of frame 1, the height that highly is less than bottom plate 5 of third connecting plate 13 to install a base 32 on third connecting plate 13, be provided with third cylinder 31 on base 32, the piston rod of third cylinder 31 is connected with one and drives seat 3, and liftout plate 34 and height limiting plate 262 all connect in the front end that drives seat 3, and then realized can be driven in step. A driving rod 33 is vertically arranged on the driving seat 3, a bearing 6 is arranged at the top of the driving rod 33, the bearing 6 is abutted against the bottom of the feeding plate 25, when the driving rod 33 is not driven, the driving rod 33 is arranged at the tail end of the feeding plate 25, the inclination angle of the material placing plate 221 is the same as that of the feeding plate 25, and when the driving rod 33 is driven forwards, the front end of the feeding plate 25 is lifted (as shown in the state of fig. 4). In conclusion, when the third cylinder 31 pushes the driving seat 3 to move, the height limiting plate 262, the ejector plate 34 and the driving rod 33 are pushed synchronously.

The following is the description of the loading process in the implementation process of the invention: firstly, a plurality of workpieces 9 are placed in the material placing plate 221, wherein a part of the workpieces 9 fall into the material discharging groove 21 and are stacked in the material discharging groove 21, the rest of the redundant workpieces 9 are placed on the material placing plate 221, after the machine is started, a piston rod of the third air cylinder 31 ejects the workpieces 9, the ejecting plate 34 horizontally ejects the workpieces 9 in the material discharging channel 51 forwards, as the front ends of the workpieces 9 are attached with the turnover plate 26, namely the workpieces 9 are clamped between the ejecting plate 34 and the turnover plate 26, the turnover plate 26 is overturned outwards under the driving of the workpieces 9, so that the workpieces 9 fall down, meanwhile, the height limiting plate 262 is horizontally conveyed to the material waiting station, the driving rod 33 is also pushed forwards, so that the front end of the material feeding plate 25 is lifted, the material in the material placing plate 221 is limited at the front end and does not enter the material discharging groove 21 any more, when the driving rod 33 retreats to the initial position, the front end of the material feeding plate 25 gradually descends to be parallel to the material placing plate 221, at this time, the ejector plate 34 also retracts to the initial position, that is, the turnover plate 26 rotates to the vertical state again, at this time, the workpieces 9 placed on the material placing plate 221 can fall into the blanking slot 21 one by one, so that the workpieces 9 are supplemented, and the steps are repeated, so that the workpieces 9 fall efficiently.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A thread rolling machine comprises a frame, wherein a processing station (2b) consisting of a pair of thread rolling shafts is arranged on the frame, and the thread rolling machine is characterized in that a feeding device is arranged at a position close to a feeding end of the thread rolling shafts, the feeding device comprises two oppositely and vertically arranged base plates, a long-strip-shaped blanking groove is formed in the inner side of each base plate, a material placing seat is connected with each base plate, a discharging channel is formed at the bottom of each base plate, an ejection plate capable of horizontally reciprocating is arranged in each discharging channel, a turnover plate extending to the bottom of each discharging channel is arranged at the front end of each base plate, the top of each turnover plate is pivoted at the front end of each base plate, and a feeding plate for feeding workpieces placed in the material placing seats into the blanking grooves is rotatably arranged between the two material placing seats; when the workpiece at the bottom of the blanking slot is pushed out of the feeding device by the ejector plate positioned on one side of the workpiece, the turnover plate is attached to the end part of the other side of the workpiece to rotate, and the workpiece falls into the position to be positioned at the front end of the same straight line of the machining station (2b) and is pushed into the machining station (2b) by the driving device.

2. The thread rolling machine according to claim 1, wherein a guide roller is arranged between the to-be-determined station and the base plate, the to-be-determined station comprises a height limiting rod which is arranged below the guide roller and can horizontally move to a workpiece falling position, the driving device comprises a first ejector rod which is arranged opposite to the processing station (2b) and pushed by a first air cylinder, a second ejector rod which is arranged opposite to the height limiting rod and pushed by a second air cylinder, and a bayonet used for clamping the workpiece is arranged at the front end of the second ejector rod.

3. The thread rolling machine according to claim 2, wherein a horizontal limiting rod is further arranged on the position to be determined, and the horizontal limiting rod and the second top rod are arranged in a staggered mode.

4. The thread rolling machine according to claim 3, wherein a third cylinder is arranged at the rear end of the base plate, a driving seat is connected with a piston rod of the third cylinder, and the ejector plate and the height limiting rod are both arranged at the front end of the driving seat.

5. The thread rolling machine according to claim 4, wherein the material placing seat is internally provided with a material placing plate which is obliquely and downwardly arranged towards the feeding direction of the workpiece, the feeding plate is pivoted below the rear end of the material placing plate, and the driving seat is vertically provided with a driving rod which is abutted against the bottom of the feeding plate.

6. The screw roller of claim 5, wherein the top of the drive rod and the end of the feed plate are each provided with bearings.

7. The screw rolling machine according to any one of claims 1 to 6 wherein a counterweight is provided on top of the turnplate.

8. The thread rolling machine according to any one of claims 1 to 6, wherein a limiting plate capable of abutting against the front end of the base plate is fixedly arranged at an interval outside the turnover plate.

9. The thread rolling machine of claim 1 wherein a bridging bar is disposed between the two thread rolling spindles.

10. The thread rolling machine according to claim 1, wherein a blanking plate is connected to the frame at the processing station (2b) and is arranged obliquely downwards, and a collecting bucket is arranged below the blanking plate.