CN110550428B

CN110550428B - Screw conveying mechanism

Info

Publication number: CN110550428B
Application number: CN201910632547.6A
Authority: CN
Inventors: 洪兰珍; 刘加活; 毛利波
Original assignee: Shenzhen Zeda Automatic Equipment Co ltd
Current assignee: Shenzhen Zeda Automatic Equipment Co ltd
Priority date: 2019-07-13
Filing date: 2019-07-13
Publication date: 2021-07-16
Anticipated expiration: 2039-07-13
Also published as: CN110550428A

Abstract

The invention relates to a screw conveying mechanism, which relates to the technical field of conveying equipment and comprises a base, a guide sheet arranged at the top of the base, a feeding plate arranged at the bottom of the base, a guide seat arranged on the base in a sliding manner and positioned between the guide sheet and the feeding plate, and a driving piece arranged on the base and used for driving the guide seat to slide relative to the base, wherein a clamping groove for a screw to enter and to be matched with a screw thread part in an inserting manner is formed in the guide seat, an opening of the clamping groove is opposite to a discharge hole of a screw arranging machine, a feed opening communicated with a screw conveying channel is formed in the feeding plate, and the guide seat drives the screw to be opposite to the feed opening when sliding and gradually breaks away from the screw when sliding so as to. The invention has the effect of separating the screw to avoid the screw from being blocked, thereby facilitating the conveying of the screw and improving the production efficiency.

Description

Screw conveying mechanism

Technical Field

The invention relates to the technical field of conveying equipment, in particular to a screw conveying mechanism.

Background

At present, an automatic screw locking machine is also called an automatic screw feeding machine, is a machine for replacing the traditional manual screw tightening machine, is a screw tightening machine which is widely applied at present, is flexibly applied to a production line, and well improves the working efficiency. The screw arranging machine, also called as a screw machine and a screw arraying machine in the industry, mainly has the function of neatly arranging screws and sending the screws to a specified position so as to simplify the operation flow of workers in the traditional screw locking process.

The principle of the existing automatic screw locking machine is as follows: the screws were first aligned by a screw aligner and then blown into the jaws by compressed air. The screw is conveyed to the screwdriver head channel from the screw conveying channel of the clamping nozzle through compressed air, and then the screwdriver head pushes the screw out of the clamping nozzle and screws the screw into a workpiece to be locked. Since the screws conveyed into the screw conveying channel by the screw arrangement machine are arranged one by one, the screws need to be separated and conveyed into the screw conveying channel one by one, and the screws are guided into the screw conveying channel through slope guiding in a conventional separation mode.

The above prior art solutions have the following drawbacks: when the screw conveying speed of the screw arrangement machine is high, the former screw is easily influenced by friction or burrs, the speed is reduced, the former screw is overlapped with the latter screw, and the two screws are easily deflected after colliding, so that the screw conveying channel is blocked, the conveying of the screws is influenced, and the production efficiency is reduced.

Disclosure of Invention

The invention aims to provide a screw conveying mechanism which can separate screws to avoid overlapping and collision of the screws, so that the screws are conveniently conveyed, and the production efficiency is improved.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a screw conveying mechanism, includes the base, set up in the guide vane at base top, set up in the delivery sheet of base bottom, slide and set up the guide holder that lies in between guide vane and the delivery sheet on the base and set up the driving piece that the drive guide holder on the base slided relative base, set up on the guide holder and supply the screw to get into and peg graft the complex with screw thread part and press from both sides the groove, it is relative with screw arrangement machine discharge gate to press from both sides the opening in groove, set up the feed opening with screw transfer passage intercommunication on the delivery sheet, the screw breaks away from the guide holder gradually and finally falls into in the feed opening when the guide holder slides.

By adopting the technical scheme, the screws on the discharge port of the screw arranging machine are continuously arranged, when the driving piece drives the guide seat to slide, the screws enter the clamping groove from the discharge port of the screw arranging machine and are connected with the guide seat, the single screws are driven to move to separate the single screws when the guide seat slides, the guide sheet is used for guiding the guide seat, the guide seat drives the screws to reach the discharge port of the feeding plate, and the screws gradually separate from the guide seat when the guide seat slides so that the screws freely fall at the discharge port and enter the discharge port, so that the screws reach the screw conveying channel; and the screw keeps falling straightly, so the positioning is accurate and the speed is increased, thereby achieving the effect of separating the screw, facilitating the conveying of the screw and improving the production efficiency.

The invention is further configured to: the vertical direction that slides along the guide holder glide direction on the guide holder is connected with the drive block, it is located to press from both sides the groove the drive block is along last, set up the bar hole with pressing from both sides the groove intercommunication on the guide piece, set up the guiding hole that is the contained angle with the guide holder glide direction on the guide piece, be provided with on the drive block and extend to in the guiding hole and slide the guide post of being connected with the guiding hole, the screw of centre gripping on it breaks away from the double-layered groove with the downthehole wall butt of bar gradually when the drive block slides, and the screw removes directly over to the feed opening when the screw breaks away from the double-layered groove completely.

Through adopting above-mentioned technical scheme, drive the drive block and remove when the guide holder removes, the guide post on the drive block and the inner wall butt of guiding hole and the guide hole under the guiding action of guiding hole along the route that is the contained angle with the guide holder removal route remove, the inner wall butt in screw and bar hole this moment, with this messenger screw breaks away from gradually and presss from both sides the groove, the screw just removes directly over to the feed opening when the screw breaks away from completely to press from both sides the groove, in this messenger's screw gets into the feed opening, later get into in the screw transfer passage.

The invention is further configured to: the guide column is cylindrical and is rotationally connected with the driving block, a dustproof cover is covered above the guide hole on the guide sheet, and the dustproof cover is hinged with the guide seat.

Through adopting above-mentioned technical scheme, the shield is articulated with the guide holder, covers the guiding hole when the shield lid is on the guide vane to this avoids impurity to get into in the guiding hole and leads to the guide post jam, avoids influencing the transport of screw.

The invention is further configured to: the screw pipe is coaxially arranged on the guide post in a sliding mode in a penetrating mode, a round hole for the screw pipe to penetrate through is formed in the guide post, a double-screw bolt is arranged in the screw pipe in a penetrating mode, a limiting ring with the diameter between the inner diameter of the round hole and the inner diameter of the screw pipe is coaxially fixed at one end of the double-screw bolt, an arc-shaped elastic sheet is arranged on the end wall, close to the limiting ring, of the end of the screw pipe in a surrounding mode, the concave arc surface of the elastic sheet faces towards the double-screw bolt, a through hole for the screw pipe to penetrate through is formed in the driving block, and when the double-screw bolt.

Through adopting above-mentioned technical scheme, the guide post rotates with the solenoid to be connected, inserts the back in the drive piece when the solenoid, rotates the double-screw bolt and removes towards the solenoid in order to drive the spacing ring, later spacing ring and shell fragment butt and drive shell fragment compression deformation, increase the crooked degree of shell fragment to this makes shell fragment and through-hole border joint break away from the through-hole with the restriction solenoid, when the double-screw bolt loosens, the shell fragment resets, with this guide post of easy wearing and tearing of convenient change.

The invention is further configured to: the screw feeding device is characterized in that the guide seat is provided with a long-strip-shaped feeding hole forming an included angle with the sliding direction of the guide seat, one end of the feeding hole is communicated with the clamping groove, a T-shaped groove extending from the discharge port of the screw arrangement machine to the upper side of the feed opening is formed in the guide plate, the T-shaped groove is communicated with the feeding hole at the intersection of the T-shaped groove and the feeding hole, the other end of the feeding hole is communicated with a discharge hole, the diameter of the discharge hole is larger than the maximum diameter of the screw, the screw is gradually separated from the T-shaped groove when the guide seat moves relative to the feeding plate, and the discharge hole.

Through adopting above-mentioned technical scheme, during initial condition, intercommunication about pressing from both sides groove and T-slot, the head that is used for being connected with the bottle opener on the screw inserts the T-slot, distribute threaded one section on the screw and peg graft with pressing from both sides the groove, and press from both sides groove and T-slot intercommunication department only supplies single screw to get into, with this single screw of conveniently separating out, when the driving piece drives the relative feed table of guide holder and removes, the inner wall and the screw butt of porthole promote the screw along the length direction in T-slot, the range direction of screw removes to the feed opening promptly, the screw breaks away from the T-slot gradually during, when the screw breaks away from the T-slot completely, discharge opening and feed opening are vertical relative, with this make in the screw gets into the feed opening, and finally get into in the.

The invention is further configured to: the feed opening intercommunication has the conveying pipeline, conveying pipeline and screw transfer passage intercommunication, the mounting groove has been seted up on the delivery sheet, the mounting groove is vertical relative with the feed opening, be provided with the magnetic sheet on the mounting groove inner wall, the cover is equipped with the magnetic ring that adsorbs each other with the magnetic sheet on the conveying pipeline opening border, the magnetic ring is pegged graft with the mounting groove and is cooperated.

Through adopting above-mentioned technical scheme, the conveying pipeline is used for connecting clamp and nozzle and base, need dismantle the conveying pipeline with convenient operation when the base is changed or is overhauld, connects fixed conveying pipeline and delivery sheet through the magnetic force of magnetic sheet and magnetic ring when the installation, and the mounting groove pegs graft with the magnetic ring to this fixed conveying pipeline makes things convenient for the dismouting of conveying pipeline.

The invention is further configured to: feed opening one side is provided with the propelling movement subassembly, the propelling movement subassembly is including setting up on the base with the relative infrared sensor who passes through in order to detect the screw with screw whereabouts route, set up on the base with the controller that the infrared sensor electricity is connected, with the gas-supply pipe of screw transfer passage intercommunication and set up the solenoid valve on the gas-supply pipe, the gas-supply pipe is contained angle and its gas outlet orientation with screw transfer passage and keeps away from feed opening one side.

Through adopting above-mentioned technical scheme, when the screw whereabouts, the screw blocks infrared ray of infrared sensor to this triggers infrared sensor and sends the signal of telecommunication, and the controller responds the signal of telecommunication and control solenoid valve opens, and in this with high-pressure atmospheric pressure drum income conveying pipeline, and the gas-supply pipe is the contained angle and its gas outlet orientation keeps away from feed opening one side with screw transfer passage, and the direction that makes high-pressure gas is unanimous with the moving direction of screw with this, thereby improves the transport efficiency of screw.

The invention is further configured to: the feed opening is provided with the guide ring on circular and feed opening border, passes when the screw whereabouts the guide ring, the guide ring is the ring form and its diameter is greater than the diameter of feed opening, be provided with the direction membrane between the inner circle wall of guide ring and the feed opening border, be connected with the transfer line of being connected with the vertical sliding of base on the guide ring, the guide ring drives the direction membrane and expandes to being hourglass hopper-shaped when the transfer line removes, the cover is equipped with elastic component on the transfer line, elastic component's one end and guide ring are connected, and the other end is connected with the base.

Through adopting above-mentioned technical scheme, support the guide ring through transfer line and elastic component, its one end is easy to be blocked in the border department of feed opening when some screw receives the disturbance, accepts the screw through being the guide film that leaks hopper-shaped, and the screw receives reaction force and kick-backs when conflicting the guide film and dials right to this makes things convenient for the reseing of screw, makes things convenient for the screw to get into the feed opening, reduces the jam phenomenon, improves production efficiency.

The invention is further configured to: the base is provided with a driving motor, a cam is coaxially fixed on an output shaft of the driving motor, and the peripheral side wall of the cam is in rolling connection with the top surface or the bottom surface of the guide ring to drive the guide ring to reciprocate.

By adopting the technical scheme, the cam is driven to rotate when the output shaft of the driving motor rotates, the upper partial area of the peripheral side wall of the cam protrudes outwards, so that the eccentricity between the guide ring and the output shaft of the driving motor is continuously changed, the guide ring reciprocates up and down under the action of the cam and the elastic piece to generate a vibration phenomenon, and a screw in contact with the guide film enters the feed opening under the vibration action, so that the blocking phenomenon is reduced, and the production efficiency is improved.

The invention is further configured to: the bottom of the driving block is connected with a ball in a rolling manner, and the ball is connected with one side of the driving block, which is abutted against the guide seat, in a rolling manner.

Through adopting above-mentioned technical scheme, the drive block passes through ball and guide holder roll connection to this turns into rolling friction with plane friction, reduces the resistance that the drive block slided, thereby reduces the running load of driving piece, prolongs the life of driving piece, reduces the wearing and tearing of energy consumption and drive block simultaneously.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the screws enter the clamping grooves from the discharge port of the screw arranging machine and are connected with the guide seats, when the guide seats slide, the single screws are driven to move to separate the single screws, the guide seats drive the screws to reach the discharge port of the feeding plate, and the screws are gradually separated from the guide seats when the guide seats slide, so that the screws freely fall at the discharge port and enter the discharge port, and the screws reach the screw conveying channel; the screw falls linearly and is positioned accurately, the speed is increased, and the conveying efficiency of the screw is improved, so that the production efficiency is improved;

2. in an initial state, the clamping groove is communicated with the T-shaped groove up and down, the head of the screw is inserted into the T-shaped groove, the thread section of the screw is inserted into the clamping groove, and only a single screw enters the communication position of the clamping groove and the T-shaped groove, so that the single screw can be conveniently separated; when the guide seat moves, the inner wall of the feeding hole pushes the screw to move towards the feeding hole along the length direction of the T-shaped groove, the screw gradually separates from the T-shaped groove in the period, and when the screw completely separates from the T-shaped groove, the discharging hole is vertically opposite to the discharging hole, so that the screw enters the discharging hole and finally enters the screw conveying channel;

3. when the screw falls, the screw blocks the infrared ray of the infrared sensor to trigger the infrared sensor to send an electric signal, the controller responds to the electric signal and controls the electromagnetic valve to open, so that high-pressure air is blown into the material conveying pipe, the material conveying pipe and the screw conveying channel form an included angle, and the gas outlet of the material conveying pipe faces to the side far away from the feed opening, so that the direction of the high-pressure air is consistent with the moving direction of the screw, and the conveying efficiency of the screw is improved.

Drawings

FIG. 1 is a schematic overall structure diagram of the first embodiment;

FIG. 2 is a schematic diagram of a partially exploded structure of the first embodiment, mainly showing the guide seat;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

fig. 4 is a schematic view of the overall structure of the second embodiment.

Reference numerals: 1. a base; 2. a guide piece; 21. a dust cover; 22. a guide hole; 23. a T-shaped slot; 3. a guide seat; 31. a strip-shaped hole; 33. a guide post; 331. a circular hole; 332. a solenoid; 333. a spring plate; 334. a stud; 335. a limiting ring; 34. a drive block; 341. a ball bearing; 342. a clamping groove; 343. a through hole; 35. a feed hole; 36. a discharge opening; 4. a drive member; 41. a cylinder; 5. a feeding plate; 51. a feeding port; 52. a magnetic sheet; 53. a delivery pipe; 531. a magnetic conductive ring; 6. a push assembly; 61. an infrared sensor; 62. a controller; 63. an electromagnetic valve; 64. a guide ring; 641. a guide film; 642. a transmission rod; 643. an elastic member; 65. a drive motor; 651. a cam; 66. a gas delivery pipe.

Detailed Description

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

The first embodiment is as follows: referring to fig. 1, the screw conveying mechanism disclosed by the present invention comprises a base 1, a guide plate 2 arranged at the top of the base 1, a feeding plate 5 arranged at the bottom of the base 1, a guide seat 3 arranged on the base 1 in a sliding manner and located between the guide plate 2 and the feeding plate 5, and a driving member 4 arranged on the base 1 and driving the guide seat 3 to slide relative to the base 1. The base 1 is in a cuboid shape and is fixed with a screw arrangement machine (not shown in the figure) through screws, the guide seat 3 is opposite to a discharge port of the screw arrangement machine, and the screws are arranged in the discharge port of the screw arrangement machine in a straight line. The driving member 4 comprises an air cylinder 41, the cylinder body of the air cylinder 41 is fixed with the base 1 through screws, and the piston rod of the air cylinder is fixed with the guide seat 3 through screws.

Referring to fig. 2 and 3, the guide base 3 is provided with a clamping groove 342, the clamping groove 342 is U-shaped, and an opening of the clamping groove 342 is opposite to a discharge port of the screw arranging machine, so that a screw can enter the clamping groove 342 and can be inserted into and matched with a threaded portion of the screw. Offer the feed hole 35 that is rectangular shape on the guide holder 3, feed hole 35 inclines towards feed opening 51 one side, feed hole 35 one end and double-layered groove 342 intercommunication, and discharge opening 36 has been seted up in the other end intercommunication, and the discharge opening 36 diameter is greater than the maximum diameter of screw in order to make things convenient for the screw whereabouts. The guide piece 2 is provided with a T-shaped groove 23 extending from the discharge port of the screw arrangement machine to the upper part of the feed port 51, and the T-shaped groove 23 is communicated with the feed hole 35 at the intersection of the two.

The screw is gradually separated from the T-shaped groove 23 when the guide holder 3 moves relative to the feeding plate 5, and the discharge hole 36 is vertically opposite to the discharge opening 51 when the screw is completely separated from the T-shaped groove 23. In the initial state, the clamp groove 342 is vertically communicated with the T-shaped groove 23, the head of the screw, which is used for being connected with a screwdriver, is inserted into the T-shaped groove 23, a section of the screw, which is provided with threads, is inserted into the clamp groove 342, and only a single screw enters the communication position of the clamp groove 342 and the T-shaped groove 23, so that the single screw can be conveniently separated. When the driving member 4 drives the guide holder 3 to move relative to the feeding plate 5, the inner wall of the feeding hole 35 abuts against the screw and pushes the screw to move along the length direction of the T-shaped groove 23, that is, the arrangement direction of the screw moves towards the feed opening 51, the screw gradually separates from the T-shaped groove 23 during the process, when the screw completely separates from the T-shaped groove 23, the discharge hole 36 is vertically opposite to the feed opening 51, so that the screw enters the feed opening 51 and finally enters the screw conveying channel.

The sliding direction of the guide seat 3 is vertical to the arrangement direction of the screws, a feed opening 51 communicated with the screw conveying channel is formed in the feed plate 5, and the feed opening 51 is circular. The edge of the feed opening 51 is provided with a guide ring 64, the guide ring 64 is annular, the diameter of the guide ring 64 is larger than that of the feed opening 51, and the central axis of the guide ring coincides with that of the feed opening 51. The screw passes through the guide ring 64 when falling, and a guide film 641 is arranged between the inner ring wall of the guide ring 64 and the edge of the feed opening 51, and the guide film 641 is made of silica gel. The guide ring 64 is connected with a driving rod 642 vertically connected with the base 1 in a sliding manner, the driving rod 642 and the guide ring 64 are integrally formed, an elastic member 643 is sleeved on the driving rod 642, the elastic member 643 adopts a spring, one end of the elastic member 643 is abutted against the guide ring 64, and the other end of the elastic member 643 is fixedly adhered to the feeding plate 5.

When a part of screws are disturbed, one end of the part of screws is easily clamped at the edge of the feeding opening 51, the guide film 641 is expanded to be funnel-shaped under the elastic force of the elastic piece 643, the funnel-shaped guide film 641 is used for bearing the screws, and the screws are rebounded and straightened under the action of the counterforce when abutting against the guide film 641, so that the screws are conveniently reset, the screws can conveniently enter the feeding opening 51, the blocking phenomenon is reduced, and the production efficiency is improved.

A driving motor 65 is arranged on the base 1, the driving motor 65 is fixed with the feeding plate 5 through screws, a cam 651 is coaxially fixed on an output shaft of the driving motor 65, a partial area on the peripheral side wall of the cam 651 protrudes outwards, and the peripheral side wall of the cam 651 is in rolling connection with the top surface or the bottom surface of the guide ring 64 to drive the guide ring 64 to reciprocate. When the output shaft of the driving motor 65 rotates, the cam 651 is driven to rotate, so that the eccentricity between the guide ring 64 and the output shaft of the driving motor 65 is continuously changed, the guide ring 64 reciprocates up and down under the action of the cam 651 and the elastic member 643 to generate a vibration phenomenon, and a screw in contact with the guide film 641 enters the discharging opening 51 under the vibration action, so that the blocking phenomenon is reduced, and the production efficiency is improved.

The feed opening 51 is communicated with a material conveying pipe 53, the material conveying pipe 53 is a circular PVC hose, and the material conveying pipe 53 is communicated with a screw conveying channel and used for connecting a clamping nozzle (not shown in the figure) and the base 1. The feeding plate 5 is provided with a mounting groove (not shown in the figure), the mounting groove is vertically opposite to the feed opening 51 and is communicated with the feed opening 51, the opening edge of the feed delivery pipe 53 is sleeved with a circular magnetic conduction ring 531, and the magnetic conduction ring 531 is made of nickel and is fixedly bonded with the feed delivery pipe 53 and is in plug-in fit with the mounting groove. The magnetic sheet 52 is arranged on the inner wall of the mounting groove, the magnetic sheet 52 is in a circular ring shape and is bonded and fixed with the inner wall of the mounting groove through glue, the magnetic conductive ring 531 and the magnetic sheet 52 are mutually adsorbed, and therefore the magnetic force of the magnetic sheet 52 and the magnetic conductive ring 531 is used for connecting and fixing the material conveying pipe 53 and the feeding plate 5, and the material conveying pipe 53 is convenient to disassemble and assemble. The screw is driven to face the feed opening 51 when the guide holder 3 slides, and the screw is gradually separated from the guide holder 3 when the guide holder 3 slides, so that the screw falls freely.

The feed opening 51 one side is provided with the propelling movement subassembly 6, and the propelling movement subassembly 6 is including setting up infrared sensor 61 on base 1, setting up controller 62, the air-supply pipe 66 and the solenoid valve 63 that sets up on the air-supply pipe with screw transfer passage intercommunication that are connected with infrared sensor 61 electricity on base 1. The infrared sensor 61 is positioned in the base 1 and is fixedly bonded with the feeding plate 5, the infrared sensor 61 adopts a DR18 circular photoelectric sensor, and the infrared emission direction of the infrared sensor is opposite to the falling path of the screw so as to detect whether the screw reaches the feed opening 51. The controller 62 is located in the base 1 and is fixedly bonded with the feeding plate 5, and a PLC controller is adopted and is used for receiving an electric signal of the infrared sensor 61 to control the opening and closing of the electromagnetic valve 63 so as to control the on-off of the air conveying pipe 66. The gas pipe 66 and the screw conveying channel form an included angle, and the gas outlet faces to the side far away from the feed opening 51, so that the direction of the high-pressure gas is consistent with the moving direction of the screw, and the conveying efficiency of the screw is improved.

The implementation principle of the embodiment is as follows: the driving member 4 drives the guide seat 3 to slide, the screws enter the clamping groove 342 from the discharge port of the screw arranging machine and are connected with the guide seat 3, and the depth of the clamping groove 342 only allows a single screw to enter, so that the single screw is separated from the screws which are continuously arranged in a linear type. The guide holder 3 drives the screw to reach the feed opening 51 of the feeding plate 5, and the screw gradually separates from the guide holder 3 when the guide holder 3 slides, so that the screw freely falls down at the feed opening 51 and enters the feed opening 51, and the screw reaches the screw conveying channel.

The screw keeps falling straight line, so the positioning is accurate and the speed is increased, thereby achieving the effect of separating the screw, facilitating the conveying of the screw and improving the production efficiency. When the screw falls, the screw blocks the infrared ray of the infrared sensor 61, so as to trigger the infrared sensor 61 to send out an electric signal, the controller 62 responds to the electric signal and controls the electromagnetic valve 63 to open, so that high-pressure air pressure is blown into the material conveying pipe 53, and the screw is pushed into the screw conveying channel.

Example two: referring to fig. 4, the difference from the first embodiment is: the guide seat 3 is connected with a driving block 34 in a sliding way along the vertical direction of the sliding direction of the guide seat 3, the driving block 34 is in a square sheet shape, and the clamping groove 342 is positioned on the edge of the driving block 34 and is opposite to a discharge hole of the screw arrangement machine. The guide piece 2 is provided with a strip-shaped hole 31 communicated with the clamping groove 342, and the length direction of the strip-shaped hole 31 is consistent with the sliding direction of the guide seat 3. The guide piece 2 is provided with a guide hole 22 forming an included angle with the sliding direction of the guide seat 3, and the guide hole 22 is positioned on one side of the strip-shaped hole 31. The driving block 34 is provided with a cylindrical guide column 33 which extends into the guide hole 22 and is connected with the guide hole 22 in a sliding manner, when the driving block 34 slides, a screw clamped on the driving block abuts against the inner wall of the strip-shaped hole 31 and is gradually separated from the clamping groove 342, and when the screw is completely separated from the clamping groove 342, the screw falls into the screw conveying channel.

The guide column 33 is cylindrical and is rotatably connected with the driving block 34, a circular hole 331 is coaxially formed in the guide column 33, a spiral tube 332 is slidably arranged in the circular hole 331, the guide column 33 is rotatably connected with the spiral tube 332, and a through hole 343 through which the spiral tube 332 passes is formed in the driving block 34. A stud 334 penetrates through the internal thread of the screw tube 332, a limit ring 335 with the diameter between the inner diameter of the circular hole 331 and the inner diameter of the screw tube 332 is coaxially fixed at one end of the stud 334 penetrating through the guide sheet 2, and the limit ring 335 is annular and is welded and fixed with the stud 334. The end wall of one end of the solenoid 332 close to the limiting ring 335 is provided with an arc-shaped elastic sheet 333 in a surrounding manner, the elastic sheet 333 is made of spring steel and is integrally formed with the solenoid 332, and the elastic sheets 333 are multiple and are distributed at equal angular intervals along the circumference of the solenoid 332.

After the screw tube 332 is inserted into the driving block 34, the stud 334 is rotated to drive the limiting ring 335 to move towards the screw tube 332, then the limiting ring 335 is abutted against the elastic sheet 333 and drives the elastic sheet 333 to compress and deform, so that the bending degree of the elastic sheet 333 is increased, the elastic sheet 333 is clamped with the edge of the through hole 343 to limit the screw tube 332 to be separated from the through hole 343, and when the stud 334 is loosened, the elastic sheet 333 resets to facilitate replacement of the guide post 33 which is easy to wear.

The square dust cover 21 is covered above the guide hole 22 on the guide sheet 2, and one side edge of the dust cover 21 far away from the clamping groove 342 is hinged with the guide seat 3. When the dust cover 21 covers the guide piece 2, the guide hole 22 is shielded, so that impurities can be prevented from entering the guide hole 22 to cause the guide column 33 to be blocked, and the conveying of screws is prevented from being influenced.

The bottom of the driving block 34 is connected with the rolling balls 341 in a rolling manner, a part of the rolling balls 341 is embedded into the bottom of the driving block 34, four rolling balls 341 are respectively positioned on four corners of the driving block 34, and the rolling balls 341 are connected with one side of the guide seat 3 which is abutted against the driving block 34 in a rolling manner. The driving block 34 is connected with the guide seat 3 through the rolling ball 341 in a rolling way, so that the plane friction is converted into rolling friction, the sliding resistance of the driving block 34 is reduced, the running load of the driving piece 4 is reduced, the service life of the driving piece 4 is prolonged, and meanwhile, the energy consumption and the abrasion of the driving block 34 are reduced.

The implementation principle of the embodiment is as follows: the driving piece 4 drives the guide seat 3 to move so as to drive the driving block 34 to move, the guide column 33 on the driving block 34 is abutted against the inner wall of the guide hole 22 and moves along a path with an included angle with the moving path of the guide seat 3 under the guiding action of the guide hole 22, the screw is abutted against the inner wall of the strip-shaped hole 31 at the moment, so that the screw is gradually separated from the clamping groove 342, when the screw is completely separated from the clamping groove 342, the screw just moves right above the feed opening 51, so that the screw enters the feed opening 51 and then enters the screw conveying channel, and the process of separating and conveying the screw is completed.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a screw conveying mechanism which characterized in that: the screw feeding device comprises a base (1), a guide sheet (2) arranged at the top of the base (1), a feeding plate (5) arranged at the bottom of the base (1), a guide seat (3) arranged on the base (1) in a sliding manner and positioned between the guide sheet (2) and the feeding plate (5), and a driving piece (4) arranged on the base (1) and used for driving the guide seat (3) to slide relative to the base (1), wherein a clamping groove (342) for a screw to enter and to be in plug fit with a screw thread part is formed in the guide seat (3), an opening of the clamping groove (342) is opposite to a discharge port of a screw arranging machine, a discharge port (51) communicated with a screw conveying channel is formed in the feeding plate (5), and the screw gradually breaks away from the guide seat (3) when the guide seat (3) slides and finally falls into the discharge port (51);

the feeding device is characterized in that a driving block (34) is connected to the guide seat (3) in a sliding mode along the direction perpendicular to the sliding direction of the guide seat (3), the clamping groove (342) is located on the edge of the driving block (34), a strip-shaped hole (31) communicated with the clamping groove (342) is formed in the guide sheet (2), a guide hole (22) forming an included angle with the sliding direction of the guide seat (3) is formed in the guide sheet (2), a guide post (33) extending into the guide hole (22) and connected with the guide hole (22) in a sliding mode is arranged on the driving block (34), a screw clamped on the driving block (34) when the driving block (34) slides is abutted to the inner wall of the strip-shaped hole (31) and gradually separated from the clamping groove (342), and when the screw is completely separated from the clamping groove (342), the screw moves to the position right above the feeding port;

the guide post (33) is coaxially provided with a threaded pipe (332) in a sliding mode, the guide post (33) is provided with a round hole (331) through which the threaded pipe (332) penetrates, a threaded bolt (334) penetrates through an internal thread of the threaded pipe (332), one end of the threaded bolt (334) is coaxially fixed with a limiting ring (335) with a diameter between the inner diameter of the round hole (331) and the inner diameter of the threaded pipe (332), an end wall, close to the limiting ring (335), of the threaded pipe (332) is provided with an arc-shaped elastic sheet (333) in a surrounding mode, a concave arc surface of the elastic sheet (333) faces the threaded bolt (334), the driving block (34) is provided with a through hole (343) through which the threaded pipe (332) penetrates, and when the threaded bolt (334) rotates, the limiting ring (335) is abutted to the elastic sheet (333) and drives the elastic sheet (333) to deform so as to limit the.

2. A screw feeding mechanism according to claim 1, wherein: the guide column (33) is cylindrical and is rotationally connected with the driving block (34), a dustproof cover (21) is covered above the guide sheet (2) and positioned in the guide hole (22), and the dustproof cover (21) is hinged with the guide seat (3).

3. A screw feeding mechanism according to claim 1, wherein: the bottom of the driving block (34) is connected with a ball (341) in a rolling manner, and the ball (341) is connected with one side of the guide seat (3) which is abutted against the driving block (34) in a rolling manner.