CN113911710A

CN113911710A - Screw feed divider

Info

Publication number: CN113911710A
Application number: CN202111230085.9A
Authority: CN
Inventors: 向大军; 李保民; 陈余刚
Original assignee: Guangdong Robot Innovation Center Co ltd
Current assignee: Guangdong Robot Innovation Center Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-01-11

Abstract

The invention discloses a screw material distribution device, wherein the rear end of a main material groove is provided with a material inlet and a plurality of internal material taking positions which are arranged at intervals, and the side surface of each internal material taking position is provided with a material distribution port; the plurality of material distributing grooves extend left and right of the main material groove, the right end of each material distributing groove is communicated with the main material groove at a material distributing opening, and an external material taking position is arranged in each material distributing groove; the feeding mechanism is arranged on the side surface of the inlet of the main trough, and a feeding push block in the feeding mechanism extends out of the upper part of the main trough and can move back and forth along the main trough under the driving of the feeding driver; the feed mechanism is arranged on the right side of the main trough, push rods in the feed mechanism correspond to the feed dividing troughs one by one, and the left end of each push rod can move to an external material taking position from the right side of the main trough along the feed dividing troughs under the driving of a feed dividing driver. The screw feed divider can simultaneously provide more than 4 material taking positions, does not need to distribute an independent sliding groove for each material taking position, and is simpler in structure and higher in accuracy and working efficiency.

Description

Screw feed divider

Technical Field

The invention relates to the technical field of automatic screw locking, in particular to a screw distributing device.

Background

At present, the development of the domestic automatic screw locking technology is mature day by day, however, the automatic screw distribution technology is still the research focus of the development of the screw locking technology, the automatic screw distribution mainly means that screws which are arranged in a line are distributed to all material taking positions according to certain requirements by using a distribution device, the screws are used for the screw locking nails corresponding to the material taking positions, the number of the screws which can be distributed is more, one distribution device can be used for meeting the requirement of using a plurality of screw locking nails at one time, the processing efficiency is higher, and the cost is lower.

In the prior art, the number of the material distribution devices with 2 material taking positions is large, the number of the material distribution devices with more than 4 material taking positions is small, and in the material distribution devices with 4 material taking positions, an independent sliding groove and a sliding block need to be arranged for each material taking position, and the position of a screw needs to be adjusted for multiple times after the screw reaches the material taking position, so that the control is complex, the phenomenon of inaccurate screw in-place easily occurs, and the accuracy of automatic screw locking is low.

Disclosure of Invention

In order to overcome some defects of the prior art, the invention aims to provide the screw distributing device, which can simultaneously provide more than 4 material taking positions without distributing an independent sliding groove for each material taking position, and has the advantages of simpler structure and higher accuracy and working efficiency.

The purpose of the invention is realized by adopting the following technical scheme:

a screw depiler device comprising:

the main trough extends in the front-back direction, a feeding opening is formed in the rear end of the main trough, a plurality of internal material taking positions are arranged in the main trough at intervals, and a material distributing opening is formed in the side face where each internal material taking position is located;

the distributing grooves extend left and right of the main trough, the right end of each distributing groove is communicated with the main trough at the distributing opening, and each distributing groove is internally provided with an external material taking position;

the feeding mechanism is arranged on the side surface of the inlet of the main trough and comprises a feeding push block and a feeding driver, and the feeding push block extends out of the upper part of the main trough and can move back and forth along the main trough under the driving of the feeding driver;

the material distribution mechanism is arranged on the right side of the main trough and comprises a plurality of push rods and a material distribution driver, the push rods correspond to the material distribution troughs one by one, and the left ends of the push rods can be driven by the material distribution driver to move from the right side of the main trough to the position of the material taking position outside along the material distribution trough.

Furthermore, the feeding mechanism also comprises an elastic piece, the feeding driver comprises a driving block capable of moving back and forth, one end of the elastic piece is connected with the driving block, the other end of the elastic piece is connected with the feeding pushing block, and the driving block pushes the feeding pushing block forwards through a spring.

Furthermore, the feeding mechanism also comprises a left driver and a right driver, and the feeding push block is connected to the left driver and the right driver and driven by the left driver and the right driver to extend above the main trough or leave the main trough; the feeding push block is connected with the elastic piece through the left driver and the right driver.

Furthermore, the length direction of each push rod is consistent with the length direction of the corresponding material distributing groove.

Further, all the push rods and the material distributing grooves are parallel to each other, and all the push rods are connected with and driven by the same material distributing driver.

The material blocking mechanism comprises a plurality of blocking blocks and a material blocking driver, and the blocking blocks are matched with the material distributing port; the stop block can move back and forth under the driving of the material blocking driver, so that the stop block can block or leave the material separating port.

Furthermore, the main trough also comprises a notch, and the notch is arranged on one side opposite to the material distributing port; the movable trough wall is consistent with the cross section of the single-side trough wall of the main trough in shape, and the movable trough wall can be driven by the trough wall driver to fill or leave the notch.

Furthermore, the side of the main trough is also provided with a blocking opening communicated with the inside of the trough and the outside, a blocking mechanism is arranged outside the blocking opening and comprises a blocking block and a blocking driver, and the blocking block can move left and right under the driving of the blocking driver, so that the blocking block extends into the main trough to form the blocking or leave the main trough.

Further, the foremost end of the total trough is one of the inner material taking positions.

Further, the automatic feeding device also comprises a position sensor, wherein the position sensor is used for detecting whether the most front end of the general trough is provided with a screw or not.

According to the screw distributing device, the feeding port of the main trough is used for feeding, screws to be locked enter the main trough from the feeding port, and are pushed to the rear side of the main trough by the feeding push block of the feeding mechanism until the main trough is fully filled with the screws. Every divides silo and total silo to communicate in feed divider department, after being covered with the screw in the total silo, feed mechanism will get the screw of material level department in the total silo and push to getting the material level in dividing the silo outward, and feed mechanism continues the pay-off afterwards, will get the vacancy that the material level department formed because of pushing the silo outward because of pushing and mend neatly, it has the screw all to distribute in every material level department of getting in the material level and the total silo outward in every of every branch silo after mended neatly, can satisfy a plurality of lock spiral shell nailing guns and take simultaneously.

The screw type material taking device has the advantages that the internal material taking position is directly arranged in the main material groove, the material distributing groove is not required to be additionally arranged, and the screws can be simultaneously arranged on the internal material taking position and the external material taking position through timely material supplementing. Compared with the prior art, the structure is simpler, the technical difficulty in function realization is smaller, and errors are not easy to occur. In addition, according to the screw distributing device, a pair of internal material taking positions and external material taking positions can be increased by adding one distributing groove, the effect is remarkable, the production efficiency is rapidly improved, the difficulty in technical realization is not multiplied, the cost of automatically locking screws is reduced, and the screw distributing device is suitable for popularization and use.

Drawings

FIG. 1 is a perspective view of a screw feeder with a stopper and a movable groove wall not extending;

FIG. 2 is a perspective view of the screw feeder of the present invention with the stopper and the movable groove wall in an extended state;

FIG. 3 is a cross-sectional view showing the protruding state of the stopper and the movable groove wall in the screw distributing device according to the present invention;

FIG. 4 is another perspective view of the screw distributor with the stopper and the movable groove wall not extended;

in the figure, 1-base, 2-total trough, 21-feeding port, 22-inner material taking position, 23-movable trough wall, 24-blocking port, 3-material separating trough, 31-outer material taking position, 4-feeding mechanism, 41-feeding push block, 42-feeding driver, 421-driving block, 43-elastic piece, 44-left driver, 45-guide rod, 5-material separating mechanism, 51-push rod, 52-material separating driver, 6-material blocking mechanism, 61-blocking block, 62-material blocking driver, 7-trough wall driver, 8-blocking mechanism, 81-blocking block and 82-blocking driver.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The figure shows a screw distributing device of the invention, which comprises a base 1, a main trough 2, a plurality of distributing troughs 3, a feeding mechanism 4 and a distributing mechanism 5, wherein the main trough 2, the distributing troughs 3, the feeding mechanism 4 and the distributing mechanism 5 are arranged on the base 1:

the main trough 2 extends in the front-back direction, a feeding opening 21 is formed in the rear end of the main trough 2, a plurality of internal material taking positions 22 are arranged in the main trough 2 at intervals, and a material distributing opening is formed in the side face where each internal material taking position 22 is located; the feeding port 21 is used for feeding, screws to be locked enter the main trough 2 from the feeding port, and the screws are arranged in a row in the main trough 2 and are conveyed forwards; in addition, total silo 2 in this embodiment not only possesses among the prior art the effect of carrying the screw and temporarily storing the screw, also is equipped with in total silo 2 and gets the material level, gets material level 22 in promptly for total silo 2's function is abundanter, and can reduce this part and get required independent branch silo 3 in material level.

The distributing grooves 3 extend left and right on the left side of the main trough 2, the right end of each distributing groove 3 is communicated with the main trough 2 at the distributing opening, and an external material taking position 31 is arranged in each distributing groove 3; divide silo 3 to be equivalent to the branch of total silo 2 for provide and get material level 31 outward, the screw is released to form and divide the material level outward in dividing silo 3 by pay-off ejector pad 41 from total silo 2, all has an outer material level that divides in every divides silo 3, consequently sets up many and divides silo 3 can form a plurality of outer material levels that divide. Wherein, the cross sectional shape of total silo 2 and branch silo 3 matches with single screw, and the nut of screw is placed upwards and is convenient for snatch, therefore the cell body cross-section of total silo 2 and branch silo 3 roughly is "T" type. The screw used in this embodiment is preferably a screw that has been threaded with a washer.

The feeding mechanism 4 is arranged on the side face of the inlet of the main trough 2, the feeding mechanism 4 comprises a feeding push block 41 and a feeding driver 42, the feeding push block 41 extends above the main trough 2 and can move back and forth along the main trough 2 under the driving of the feeding driver 42, the feeding push block 41 pushes the screws in the main trough 2 forward every time, and the pushing action is repeated until the screws are fully distributed in the main trough 2.

The material distributing mechanism 5 is arranged on the right side of the general trough 2, the material distributing mechanism 5 comprises a plurality of push rods 51 and a material distributing driver 52, the push rods 51 correspond to the material distributing troughs 3 one by one, and the left ends of the push rods 51 can be driven by the material distributing driver 52 to move from the right side of the general trough 2 along the material distributing troughs 3 to the outer material taking positions 31. The material distributing mechanism 5 is used for pushing the screws temporarily positioned in the inner material distributing position in the main trough 2 into the outer material distributing position in the material distributing trough 3, so that the screws are arranged in the outer material distributing position, then the feeding mechanism 4 continues to act to fill the formed vacant positions, and the screws are distributed in the inner material taking position 22 and the outer material taking position 31.

In order to improve the efficiency of filling the empty space in the main trough 2, the feeding mechanism 4 further comprises an elastic member 43, the feeding driver 42 comprises a driving block 421 capable of moving back and forth, one end of the elastic member 43 is connected with the driving block 421, the other end of the elastic member is connected with the feeding pushing block 41, and the driving block 421 pushes the feeding pushing block 41 forward through a spring. When the total trough 2 is filled with screws, the screw cannot be pushed forward by the feeding push block 41, but the driving block 421 still pushes forward, so that the elastic member 43 is compressed and has an elastic force acting on the feeding push block 41 because the feeding push block 41 cannot advance any more. After the material distributing mechanism 5 pushes the screws in each internal material taking position 22 in the main material groove 2 into the material distributing groove 3, the feeding push block 41 can push the rear screws forward immediately under the action of the elastic force of the elastic piece 43, so that the formed vacant positions are quickly filled up, and the matched screw locking device can be used immediately. According to the scheme, the hole position detection of the feeding mechanism 4 is not required to be waited after the screw is pushed away by the distributing mechanism 5, and the feeding driver 42 is started after the hole position detection to push the screw from the back to be supplemented, so that a large amount of programs and time are saved, and the efficiency of continuously locking the screw can be improved.

As a preferable scheme of the feeding mechanism 4, the feeding mechanism 4 further includes a left driver 44 and a right driver 44, and the feeding push block 41 is connected to the left driver 44 and driven by the left driver and the right driver to extend above the main trough 2 or leave the main trough 2; when the feeding push block 41 needs to push the screw forward, the left and right drivers 44 drive the feeding push block 41 to extend out so as to act on the screw; when the feeding is required to return backwards after completing one forward pushing action, the left and right drivers 44 drive the feeding push block 41 to retract, so as to avoid pushing back a screw which may be placed at a rear position in the main trough 2 in the process of returning backwards. The feeding push block 41 is connected with the elastic member 43 through the left and right drivers 44 in a matching manner with the left and right drivers 44.

A guide rod 45 in the front-back direction is further arranged, guide holes are formed in the left driver 44 and the right driver 44, one end of the guide rod 45 is fixed on the driving block 421, the other end of the guide rod is inserted into the guide holes, and the left driver 44 and the right driver 44 move back and forth along the guide rod 45; the elastic piece 43 is a spring which is sleeved outside the guide rod 45; when the driving block 421 moves forward, the driving block 421 pushes the left and right drivers 44 and the feeding push block 41 forward by the spring. The guide rod 45 regulates the moving directions of the left driver 44, the right driver 44 and the feeding push rod 51 to be front and back, and also regulates the deformation direction of the elastic piece 43 to be only front and back, so that the elastic direction change caused by different elastic deformation degrees of all positions of the elastic piece 43 in the deformation process is prevented, and the thrust direction of the feeding push block 41 is further influenced. And the spring is a mature industrial product, is suitable for directly purchasing high-quality standard parts for assembly and use, and reduces the manufacturing difficulty and cost of the whole material distributing device.

Because the material distributing mechanism 5 corresponds to the material distributing grooves 3, the length direction of each push rod 51 in the embodiment is consistent with the length direction of the corresponding material distributing groove 3, so that the external material taking position 31 in each material distributing groove 3 can be successfully pushed into a screw.

In a specific embodiment, the length direction of each distributing groove 3 is not necessarily consistent, and when the length direction is inconsistent, each push rod 51 needs to be provided with a separate distributing driver 52. In this embodiment, preferably, all the push rods 51 and the material distributing grooves 3 are parallel to each other, and all the push rods 51 are connected to and driven by the same material distributing driver 52, so as to save the number of drivers required, and also reduce the difficulty of spatial arrangement and the complexity of the overall structure. In this embodiment, it is also preferable that each of the left ends of the push rods 51 is provided with an inwardly concave arc-shaped opening, and the specific shape and size of the arc-shaped opening are matched with the shape and size of the outer side surface of the nut of the screw to be pushed, so as to better push the screw. In the setting of quantity, this embodiment is preferred divide silo 3 the push rod 51 interior material level 22 of getting with the quantity of getting material level 31 outward is 2, and the total quantity of getting the material level this moment is 4, can satisfy most high-efficient lock screw demands.

In order to avoid that the screws are mistakenly inserted into the material distributing groove 3 during the initial material distribution of the main material groove 2, the material blocking mechanism 6 is preferably further included in the embodiment, the material blocking mechanism 6 includes a plurality of stop blocks 61 and a material blocking driver 62, and the stop blocks 61 are arranged in a matching manner with the material distributing openings; the stop block 61 can move back and forth under the driving of the material blocking driver 62, so as to block or leave the material separating port. When the total material trough 2 needs to be fully filled with screws, the material blocking driver 62 drives the stop block 61 to block each material distributing opening, and the screws cannot enter the material distributing troughs 3 due to extrusion when being pushed forwards; when the push rod 51 is required to be used for driving the screws in the inner material taking position 22 in the general trough 2 to enter the outer material taking position 31 through the material dividing opening, the material blocking driver 62 drives the stop block 61 to leave the material dividing opening, so that the screws can normally enter. The structure considers the situation that if the screws enter the feeding groove by mistake, one screw is arranged to enter the material distributing groove 3 when the material distributing mechanism 5 pushes subsequently, but only one screw can be located in the correct external material taking position 31, and the rest screws cannot be taken, so that the taking rate of the screws can be ensured as much as possible.

In order to facilitate material taking, the main trough 2 further comprises a notch, and the notch is formed in the side opposite to the material distributing port; the chute is also provided with a movable chute wall 23 and a chute wall driver 7, the section shape of the movable chute wall 23 is consistent with that of the chute wall on one side of the main chute 2, and the movable chute wall 23 can be driven by the chute wall driver 7 to fill or leave the notch. When the screws are arranged in the main trough 2 from back to front, the trough wall driver 7 enables the movable trough wall 23 to fill the notch to form the main trough 2 with an unchanged shape, and the screws can normally pass through the notch and cannot fall out of the notch; after screws are arranged at all the inner material taking positions 22 and the outer material taking positions 31, the screws on the material taking positions are taken by the screw locking device, at the moment, the groove wall driver 7 drives the movable groove wall 23 to leave the groove opening to vacate a right space for the screw driving device (such as a starting clamping jaw), so that the left side and the right side of the nut are both free from blocking, and the screws can be clamped from the left side and the right side of the nut conveniently to be taken smoothly.

In general, the device for feeding materials into the screw feeder is a direct vibration feeder, a discharge port of the direct vibration feeder is in butt joint with the feeding port 21 of the screw feeder, and a vibration disc is usually arranged in the direct vibration feeder, so that the vibration amplitude of the whole device is large, and the vibration of the accessory of the feeding port 21 in butt joint with the direct vibration feeder is also large. In order to reduce or avoid the influence of the vibration on the screw material distribution device, in this embodiment, preferably, a blocking opening 24 communicating the inside and the outside of the main trough 2 is further formed in the side surface of the main trough 2, a blocking mechanism 8 is further disposed outside the blocking opening 24, the blocking mechanism 8 includes a blocking block 81 and a blocking driver 82, and the blocking block 81 can move left and right under the driving of the blocking driver, so as to extend into the main trough 2 from the blocking opening 24 to form blocking or leave the main trough 2. After the screws are fully distributed in the main trough 2, the feeding push block 41 elastically abuts against the side face of the nut of the last screw under the action of the elastic piece 43, and the feeding push block can be completely filled after the material distributing mechanism 5 distributes the materials into the material distributing trough 3. At this time, the blocking driver drives the blocking block 81 to extend into the main trough 2 from the blocking opening 24, so that the feeding push block 41 in the front and the arranged screws are separated from the rear, and the influence on the front screws caused by the fact that the screws are fed down by directly vibrating the feeder in the waiting process is avoided.

In order to guarantee that all screws can be taken, the storage space of the main trough 2 is not wasted, one of the positions in the material level 22 is taken for the inside at the forefront end of the main trough 2, and all screws are guaranteed to enter the distributing trough 3 when entering the forefront end, so that the screws can be taken.

When feeding mechanism 4 pay-off, need detect the total silo 2 and distribute the screw, this embodiment adopts position sensor to detect (not shown in the figure), position sensor is used for detecting whether the foremost end of total silo 2 has the screw, because the screw promotes from the back forward in proper order, when the foremost end also has the screw, can judge that all has distributed the screw in the whole total silo 2. In addition, all the drivers (such as the feeding driver 42, the left and right drivers 44 and the material blocking driver 62) in the embodiment adopt air cylinders with piston rods, and the air cylinders can provide linear reciprocating power convenient for precise control.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a screw feed divider which characterized in that includes:

the material distribution mechanism is arranged on the right side of the main trough and comprises a plurality of push rods and a feeding driver, the push rods correspond to the material distribution troughs one by one, and the left ends of the push rods can be driven by the material distribution driver to follow the right side of the main trough to move to the outer material taking position.

2. The screw feeding device as claimed in claim 1, wherein the feeding mechanism further comprises an elastic member, the feeding driver comprises a driving block capable of moving back and forth, one end of the elastic member is connected with the driving block, the other end of the elastic member is connected with the feeding pushing block, and the driving block pushes the feeding pushing block forward through a spring.

3. The screw feeding device according to claim 2, wherein the feeding mechanism further comprises a left driver and a right driver, and the feeding pushing block is connected to the left driver and the right driver and driven by the left driver and the right driver to extend above the main trough or leave the main trough; the feeding push block is connected with the elastic piece through the left driver and the right driver.

4. The screw feed divider of claim 1, wherein the length direction of each push rod is consistent with the length direction of the corresponding distributing groove.

5. The screw feed mechanism of claim 4, wherein all of the push rods and the feed channel are parallel to each other, and all of the push rods are connected to and driven by the same feed driver.

6. The screw feed divider according to any one of claims 1 to 5, further comprising a stop mechanism, wherein the stop mechanism comprises a plurality of stoppers and a stop driver, and the stoppers are matched with the feed openings; the stop block can move back and forth under the driving of the material blocking driver, so that the stop block can block or leave the material separating port.

7. The screw feed divider of claim 6, wherein the manifold channel further comprises a notch, the notch opening on a side opposite the feed opening; the movable trough wall is consistent with the cross section of the single-side trough wall of the main trough in shape, and the movable trough wall can be driven by the trough wall driver to fill or leave the notch.

8. The screw distribution device according to any one of claims 1 to 5, wherein a blocking opening communicating with the inside and the outside of the main trough is further formed in the side surface of the main trough, a blocking mechanism is further arranged outside the blocking opening, the blocking mechanism comprises a blocking block and a blocking driver, and the blocking block can move left and right under the driving of the blocking driver, so that the blocking block extends into the main trough from the blocking opening to form a blocking or a separation from the main trough.

9. The screw feed divider of any one of claims 1 to 5, wherein the foremost end of the general trough is one of the inner take-off positions.

10. Screw feed device according to one of claims 1 to 5, further comprising a position sensor for detecting whether the foremost end of the magazine has a screw.