CN220148562U - Spectacle case arm material feeding unit - Google Patents

Abstract

The utility model provides a feeding device for a mechanical arm of a spectacle case. The problem of iron spectacle case automatic production line production efficiency slow, the frock assists utensil adjustment to change slowly is solved. The method is characterized in that: and a second conveyer belt is arranged on one side of the original first conveyer belt in parallel, and a mechanical arm assembly is longitudinally arranged above the two conveyer belts. The mechanical arm assembly comprises a mechanical arm unit, a guiding unit, a blocking unit and a control unit. The mechanical arm unit drives the first double-rod cylinder through the longitudinal linear sliding table and is connected with the mechanical arm at the lower end of the cylinder, and the iron shell on the first conveying belt is conveyed to the second conveying belt, so that downstream procedures are conveniently increased, and the production efficiency is improved. In addition, the on-line adjustment of the guide unit is realized through the adjusting nut with internal and external double threads, and the quick replacement requirement of the manipulator is met through the dovetail groove with one wide end and one narrow end and the steel bead positioning screw structure.

Description

Spectacle case arm material feeding unit

Technical Field

The utility model relates to the field of automatic production lines of spectacle cases, in particular to a feeding device for a mechanical arm of a spectacle case.

Background

The eyeglass case can be manufactured from a variety of materials, one of which is an iron-wrapped eyeglass case. At present, the iron shell of the iron spectacle case is automatically produced, a coiled iron sheet is punched into a shell by an automatic punching machine, and the shell is conveyed to an automatic punching device for punching by a conveying belt, and then subsequent wrapping processing is performed. The existing automatic spectacle case production line is in a single conveying belt mode, a single conveying belt can only convey the iron shells punched by an automatic punching machine to a single automatic punching device at the downstream of a conveying belt, the production efficiency is improved due to the fact that the beat of a punching process is slower than that of a shell punching process, in addition, the iron shells with different sizes can be processed by the same production line, and when products are replaced, tools and auxiliary tools need to be adjusted or replaced, and the adjustment and replacement of the existing tools and the auxiliary tools are time-consuming.

Disclosure of Invention

In view of the above, the utility model aims to provide a feeding device for a mechanical arm of a spectacle case, which is convenient for adding a second conveyor beside an original first conveyor, and a part of punched iron shell is transferred to the second conveyor through the mechanical arm, so that downstream working procedures are convenient to add, and the production efficiency is improved.

In addition, the problem of on-line adjustment of the guide unit is solved through the adjusting nut with internal and external double threads, and quick-change and quick-positioning of the manipulator are realized through the dovetail structure with one wide end and one narrow end, so that the problem that the tool is time-consuming to adjust and replace when the product is replaced is avoided.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the mechanical arm feeding device for the glasses case comprises a first conveying belt, a second conveying belt and a mechanical arm assembly, wherein the first conveying belt, the second conveying belt and the mechanical arm assembly are arranged in parallel and longitudinally arranged above the first conveying belt and the second conveying belt;

the mechanical arm assembly comprises a mechanical arm unit, a guiding unit, a blocking unit and a control unit;

the mechanical arm unit comprises a first gantry bracket fixed on two sides of a first conveying belt, a linear sliding table is fixed on an upper cross beam of the first gantry bracket, the linear sliding table longitudinally spans over the first conveying belt and the second conveying belt, one end of the linear sliding table is connected with a motor, a sliding block is assembled on the linear sliding table and can longitudinally slide along the linear sliding table, the sliding block is connected with a first double-rod cylinder, a piston rod of the first double-rod cylinder vertically stretches downwards, a first connecting block is arranged at the lower end of the piston rod of the first double-rod cylinder, and a manipulator for taking and placing an iron shell is connected to the first connecting block;

the manipulator comprises a supporting plate and a sucker, wherein the sucker is fixedly connected to the bottom surface of the supporting plate, a dovetail groove is formed in the bottom surface of the first connecting block, one end of the dovetail groove is wide, the other end of the dovetail groove is narrow, a dovetail matched with the dovetail groove is formed in the top surface of the supporting plate, a threaded hole is formed in the center of the top surface of the dovetail groove, a steel ball positioning screw is arranged in the threaded hole, and a ball socket is formed in the top surface of the dovetail and matched with the steel ball of the steel ball positioning screw;

the guide units are symmetrically arranged on two sides of the first conveying belt and used for gathering and aligning scattered iron shells on the first conveying belt, the left end inlet of each guide unit is V-shaped, and the right end outlet is parallel to the first conveying belt and extends to the lower part of the manipulator;

each guide unit comprises a flange and an adjusting component; the flange is fixedly connected with the adjusting assembly, and the adjusting assembly comprises a base, an adjusting nut and an adjusting rod; the base is fixed on one side of the first conveying belt, an elongated slot parallel to the first conveying belt is formed in the upper portion of the base, one end, far away from the center of the first conveying belt, of the base is connected with the adjusting nut in a threaded mode, the adjusting nut is cylindrical, threads which are the same as the outer circle in rotation direction are formed in an inner hole of the adjusting nut, threads are formed in one end of the adjusting rod, and the adjusting nut is screwed with the inner hole of the adjusting nut in a threaded mode through an opening of one end, close to the center of the first conveying belt, of the base;

the material blocking unit is arranged at the right end of the guide unit and used for blocking and tightly tightening the iron shells aligned by the guide unit, and comprises a second gantry bracket fixed at two sides of the first conveying belt, a second double-rod cylinder is fixedly connected in the middle of an upper cross beam of the second gantry bracket, a piston rod of the second double-rod cylinder stretches vertically downwards, a second connecting block is arranged at the lower end of the piston rod of the second double-rod cylinder, and a material blocking block is assembled on the lower plane of the second connecting block;

the control unit comprises a controller, a first electromagnetic valve, a second electromagnetic valve and a sensor, wherein the controller is fixed on the upper cross beam of the first gantry support together with the first electromagnetic valve, the second electromagnetic valve is positioned on the back surface of the linear sliding table, and the number of the sensors is multiple. The controller is electrically connected with the motor, the first electromagnetic valve, the second electromagnetic valve, the sensor and the sucker, the first electromagnetic valve is connected with the first double-rod air cylinder, the second electromagnetic valve is connected with the second double-rod air cylinder, the signal input end of the controller is connected with the sensor, and the signal output end of the controller is connected with the motor, the first electromagnetic valve, the second electromagnetic valve and the sucker.

The further technical proposal is that: the sensors are respectively arranged at the two ends of the linear sliding table and used for controlling the sliding distance of the sliding block, the upper end and the lower end of the first double-rod cylinder are used for controlling the upper and lower positions of the manipulator, and the upper end and the lower end of the second double-rod cylinder are used for controlling the lifting distance of the blocking block.

The further technical proposal is that: the flange is vertical to the upper surface of the first conveyor belt, the right end of the flange is parallel to the first conveyor belt, the left end of the flange is gradually close to the edge of the first conveyor belt, and the parallel part of the flange and the first conveyor belt is fixed with the unthreaded end of the adjusting rod.

The further technical proposal is that: the bottom surface of the supporting plate is fixedly connected with a plurality of suckers, and the suckers are in one-to-one correspondence with the iron shells aligned and tightly combined by the guide unit and the blocking unit.

The further technical proposal is that: and limit stops are arranged on two sides of the large dovetail end and are fixed with the first connecting block through bolts.

The further technical proposal is that: the adjusting components of each guiding unit are two sets.

The further technical proposal is that: the cross section of the adjusting rod matched with the base is non-circular.

The further technical proposal is that: and a chamfer is arranged at the small dovetail end of the top surface of the supporting plate.

Compared with the prior art, the utility model has the following advantages:

according to the feeding device for the mechanical arm of the glasses case, the second conveyor belt is arranged on one side of the original first conveyor belt in parallel, and the iron shell on the first conveyor belt is conveyed to the second conveyor belt through the mechanical arm longitudinally arranged above the two conveyor belts, so that downstream working procedures are conveniently increased, and the production efficiency is improved.

Simultaneously, when having solved same production line and changing the product, frock and assistance utensil are difficult for adjusting the problem of changing. The guide unit adopts an adjusting nut with an internal and external double-thread structure, and the distance between the guide unit and the edge of the first conveying belt can be adjusted by only rotating the adjusting nut, so that the guide unit does not need to be replaced and detached; the quick replacement of the manipulators with different distances is realized through the dovetail positioning steel ball screw structure with one wide end and one narrow end.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a plan view of an embodiment of the present utility model;

FIG. 2 is a schematic view of the overall structure according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an internal and external double threaded adjustment assembly according to an embodiment of the present utility model;

FIG. 4 is a block diagram of a quick change dovetail according to an embodiment of the present utility model;

reference numerals illustrate:

1. a first conveyor belt; 2. a second conveyor belt; 3. a robotic arm assembly; 31. a mechanical arm unit; 32. a guide unit; 33. a material blocking unit; 34. a control unit; 311. a first gantry support; 312. a linear sliding table; 313. a motor; 314. a slide block; 315. a first double-rod cylinder; 316. a first connection block; 317. a manipulator; 321. a flange; 322. an adjustment assembly; 331. a second gantry support; 332. a second double-rod cylinder; 333. a second connection block; 334. a blocking block; 341. a controller; 342. a first electromagnetic valve; 343. a second electromagnetic valve; 344. a sensor; 3161. a dovetail groove; 3162. steel ball positioning screw; 3171. a support plate; 3172. a suction cup; 3221. a base; 3222. an adjusting nut; 3223. an adjusting rod; 31711. dovetail; 31712. a ball socket; 31713. a limit stop; 31714. chamfering.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an azimuth or a positional relationship such as "upper", "lower", "inner", "back", and the like are presented, they are based on the azimuth or the positional relationship shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to a feeding device for a glasses case mechanical arm, which comprises a first conveying belt 1, a second conveying belt 2 and a mechanical arm assembly 3 longitudinally arranged above the first conveying belt 1 and the second conveying belt 2 in a parallel mode.

According to the glasses case mechanical arm feeding device, the mechanical arm assembly 3 is arranged, the second conveying belt 2 is additionally arranged on the basis of the original first conveying belt 1, punching holes or other subsequent procedures are additionally arranged on the second conveying belt 2, and the iron shells which are not processed on the first conveying belt 1 are transferred to the second conveying belt 2 for processing, so that the production efficiency is improved.

Based on the above overall description, an exemplary structure of the feeding device for the spectacle case robot of the present embodiment is shown in fig. 1 to 4, and the feeding action of the spectacle case robot is completed by the robot unit 31, the guiding unit 32, the blocking unit 33 and the control unit 34 in cooperation.

The mechanical arm unit 31 comprises first gantry brackets 311 fixed on two sides of a first conveying belt 1, a linear sliding table 312 is fixed on an upper cross beam of the first gantry brackets 311, the linear sliding table 312 longitudinally spans above the first conveying belt 1 and a second conveying belt 2, one end of the linear sliding table 312 is connected with a motor 313, a sliding block 314 is assembled on the linear sliding table 312, the sliding block 314 can longitudinally slide along the linear sliding table 312, the sliding block 314 is connected with a first double-rod air cylinder 315, a piston rod of the first double-rod air cylinder 315 vertically stretches downwards, a first connecting block 316 is arranged at the lower end of the piston rod of the first double-rod air cylinder 315, and the first connecting block 316 is connected with a manipulator 317 for taking and placing iron shells. The motor 313 can drive the sliding block 314 to slide above the first conveyor belt 1 and the second conveyor belt along the linear sliding table 312, and the first double-rod air cylinder 315 can drive the manipulator 317 to move up and down, so that the actions of picking up the iron shell from the first conveyor belt 1, transferring the iron shell to the second conveyor belt 2 along the linear sliding table 312 and then releasing the iron shell are realized.

The manipulator 317 includes backup pad 3171 and sucking disc 3172, and sucking disc 3172 fixed connection is in backup pad 3171 bottom surface, and first linkage piece 316 bottom surface is provided with dovetail 3161, and dovetail 3161 one end is wide one end narrow, and backup pad 3171 top surface is equipped with the dovetail 31711 that matches with the dovetail, and the screw hole is opened at dovetail 3161 top surface center, installs steel ball set screw 3162 in it, and the ball socket 31712 is opened to the dovetail top surface and steel ball set screw 3162 steel ball matches. The dovetail 3161 with one wide end and one narrow end can realize bidirectional positioning, and is convenient to plug, and the steel ball positioning screw 3162 and the ball socket 31712 are matched to realize the limit of the plug-in direction, so that the quick positioning and quick replacement of the manipulator 317 are realized.

The guiding units 32 are symmetrically arranged on two sides of the first conveying belt 1 and are used for gathering and aligning scattered iron shells on the first conveying belt 1, the left end inlet of each guiding unit 32 is in a V shape, and the right end outlet is parallel to the first conveying belt 1 and extends to the lower portion of the manipulator 317. The V-shaped opening has a large accommodating range, so that iron shells scattered on the first conveying belt 1 can enter the guide unit 32, and the iron shells are guided by the gradually-folded V-shaped opening, so that the iron shells are conveyed to the lower part of the manipulator 317 in a correct posture.

Each guide unit 32 includes a flange 321 and an adjustment assembly 322; the flange 321 is fixedly connected with the adjusting assembly 322, and the adjusting assembly 322 comprises a base 3221, an adjusting nut 3222 and an adjusting rod 3223; the base 3221 is fixed on one side of the first conveyer belt 1, an elongated slot parallel to the first conveyer belt 1 is formed in the upper portion of the base 3221, an adjusting nut 3222 is connected to one end, far away from the center of the first conveyer belt 1, of the base 3221 in a threaded mode, the adjusting nut 3222 is in a cylindrical shape, threads which are the same as the outer circle in rotation direction are formed in an inner hole of the adjusting nut 3222, threads are formed in one end of the adjusting rod 3223, and the adjusting rod penetrates through an opening of one end, close to the center of the first conveyer belt 1, of the base 3221 to be screwed with the inner hole of the adjusting nut 3222. The adjusting nut 3222 is rotated, the adjusting nut 3222 can be screwed in or out along the threaded hole of the base 3221, and the adjusting rod 3223 can be driven by the adjusting nut 3222 to approach or depart from the edge of the first conveying belt 1 due to the fact that the inner hole and the outer circle of the adjusting nut 3221 are provided with threads with different diameters and the same rotation direction, so that the distance between the flange 321 and the center of the first conveying belt 1 is adjusted.

The blocking unit 33 is arranged at the right end of the guiding unit 32 and is used for blocking and tightly fastening the iron shells aligned by the guiding unit 32, and comprises a second gantry bracket 331 fixed on two sides of the first conveying belt 1, a second double-rod air cylinder 332 is fixedly connected in the middle of an upper cross beam of the second gantry bracket 331, a piston rod of the second double-rod air cylinder 332 stretches vertically downwards, a second connecting block 333 is arranged at the lower end of the piston rod of the second double-rod air cylinder 332, and a blocking block 334 is assembled on the lower plane of the second connecting block 333. When the piston rod of the second double-rod air cylinder 332 extends out, the blocking block 334 descends to the upper surface of the first conveyor belt 1, so that the iron shell guided by the guide unit 32 on the first conveyor belt 1 can be prevented from moving to the right end, and the sucker 3172 of the mechanical arm 317 can be conveniently and accurately grabbed.

The control unit 34 includes a controller 341, a first electromagnetic valve 342, a second electromagnetic valve 343, and a sensor 344, where the controller 341 and the first electromagnetic valve 342, the second electromagnetic valve 343 are fixed on the upper beam of the first gantry 311, and are located on the back of the linear sliding table 312, and the sensor 344 is multiple. The controller 341 is electrically connected with the motor 313, the first electromagnetic valve 342, the second electromagnetic valve 343, the sensor 344 and the suction cup 3172, the first electromagnetic valve 342 is connected with the first double-rod cylinder 315, the second electromagnetic valve 343 is connected with the second double-rod cylinder 332, the signal input end of the controller 341 is connected with the sensor 344, and the signal output end of the controller 341 is connected with the motor 313, the first electromagnetic valve 342, the second electromagnetic valve 343 and the suction cup 3172.

The sensors (344) are respectively arranged at two ends of the linear sliding table (312) and are used for controlling the sliding distance of the sliding blocks (314); the upper end and the lower end of the first double-rod air cylinder (315) are used for controlling the upper position and the lower position of the manipulator (317); the upper end and the lower end of the second double-rod air cylinder (332) are used for controlling the lifting distance of the blocking block (334).

When the mechanical arm assembly 3 is started, the sensor 344 positioned at the end of the first conveying belt 1 on the linear sliding table 312 senses the sliding table 314, the sensor 344 at the upper end of the first double-rod air cylinder 315 senses the piston of the linear sliding table, the sensor 344 at the upper end of the second double-rod air cylinder 332 also senses the piston of the linear sliding table, the three sensors are connected and all feed back electric signals to the controller 341, the controller 341 can output an electric signal to the second electromagnetic valve 343, the second electromagnetic valve 343 can convey compressed air to the upper cavity of the second double-rod air cylinder 332, the material blocking plate 334 can descend to the upper surface of the first conveying belt 1 along with the piston of the second double-rod air cylinder 332, and the iron shell guided by the guide unit 32 on the first conveying belt 1 is prevented from moving to the right end.

When the sensor 344 at the lower end of the second double-rod cylinder 332 senses the piston, an electric signal is fed back to the controller 341 after being connected, the controller 341 outputs an electric signal to the first electromagnetic valve 342, the first electromagnetic valve 342 can convey compressed air to the upper cavity of the first double-rod cylinder 315, the manipulator 317 can descend to the upper side of the iron shell along with the piston of the first double-rod cylinder 315, the sensor 344 at the lower end of the first double-rod cylinder 315 senses that the piston is connected, an electric signal is fed back to the controller 341, and the controller 341 can electrically communicate with the sucker 3172 at the lower end of the manipulator 317 to grasp the iron shell.

At this time, the controller 341 will simultaneously give an electrical signal to the first electromagnetic valve 342 and the second electromagnetic valve 343 to reverse the direction, at this time, the lower cavity of the first double-rod cylinder 315 is connected with compressed air, the piston rod is retracted, and the manipulator 317 with the iron shell is lifted; the lower cavity of the second double-rod air cylinder 332 is also communicated with compressed air, the piston rod is retracted, the material blocking plate is lifted up, and the iron shell guided by the guide unit 32 on the first conveyor belt 1 continues to move towards the right end of the first conveyor belt 1.

When the sensor 344 fixed on the upper end of the first double-rod cylinder 315 senses the piston, it transmits an electric signal to the controller 341, and the controller 341 is electrically connected to the motor 313 to drive the slider 314 to slide along the linear sliding table 312 to the upper side of the second conveyor belt 2.

When the sensor 344 located at the end of the second conveyor belt 1 on the linear sliding table 312 senses the sliding table 314, an electric signal is transmitted to the controller 341, the controller 341 cuts off the electric communication with the motor 313, meanwhile, the controller 341 also outputs an electric signal to the first electromagnetic valve 342 to enable the first electromagnetic valve 342 to change direction, at this time, the upper cavity of the first double-rod cylinder 315 is communicated with compressed air, the manipulator 317 descends to the upper side of the second conveyor belt 2 along with the piston of the first double-rod cylinder 315, the sensor 344 at the lower end of the first double-rod cylinder 315 senses that the position of the piston is communicated, an electric signal is fed back to the controller 341, and the controller 341 cuts off the electric connection with the sucker 3172 at the lower end of the manipulator 317, so that the sucker 3172 releases the iron shell to the upper surface of the second conveyor belt 2.

When the electrical connection of the suction disc 3172 is cut off, the controller 341 will give an electrical signal to the first electromagnetic valve 342 to reverse the direction, input compressed air into the lower cavity of the first double-rod cylinder 315, withdraw the piston rod, and the manipulator 317 with the released iron shell will be lifted; the sensor 344 at the upper end of the first double-rod cylinder 315 senses that the piston feeds back an electric signal to the controller 341, and the controller 341 is reversely and electrically connected with the motor 313, so that the motor 313 reversely rotates to drive the sliding block 314 to slide back to the upper side of the first conveying belt 1, and the next material blocking, grabbing, feeding and discharging cycle is continued.

The flange 321 is vertical to the upper surface of the first conveyer belt 1, the right end of the flange 321 is parallel to the first conveyer belt 1, and the left end of the flange 321 is gradually close to the edge of the first conveyer belt 1. So that the guide units 32 symmetrically provided at both sides of the first conveyor belt 1 form a V-shaped feed port. The parallel part of the flange 321 and the first conveyor belt 1 is fixed with the unthreaded end of the adjusting rod 3223. The flange 321 can be moved with the adjustment rod 3223.

The bottom surface of the supporting plate 3171 is fixedly connected with a plurality of suckers 3172, and the suckers 3172 are aligned with the guided unit 32 and the blocking unit 33 and correspond to the iron shells in a one-to-one mode. Therefore, a plurality of iron shells can be grabbed at one time, and the production efficiency is improved.

The two sides of the large end of the dovetail 31711 are provided with limit stops 31713, and the limit stops 31713 are fixed with the first connecting block 316 through bolts. Further ensuring a reliable connection of the manipulator 317 with the first connection block 316.

The adjusting members 322 of each guide unit 32 are two sets. Can be adjusted separately to ensure that the right end of the flange 321 is parallel to and spaced from the first conveyor belt and that the iron shell is aligned at the right end of the guide unit 32.

The cross section of the adjusting rod 3223 and the base 3221 is non-circular, so that the adjusting rod 3223 is prevented from rotating in the telescoping process, and the baffle 321 and the first conveying belt 1 are pressed to prevent conveying of the conveying belt.

The small end of the dovetail 31711 on the top surface of the support plate 3171 is provided with a chamfer 31714 to facilitate compression of the steel balls at the end of the steel ball positioning screw 3162.

According to the glasses case mechanical arm feeding device, the mechanical arm assembly 3 is longitudinally arranged above the original first conveying belt 1, and the iron shell on the first conveying belt 1 is split into the second conveying belt, so that the expansion of the glasses case production line is realized, and the production efficiency is improved. In addition, when the mechanical arm assembly 3 is designed, products with different sizes can be processed by the same automatic production line of the glasses case, the guide unit 32 and the mechanical arm 317 also need to be correspondingly adjusted during production change, the adjusting nuts with the internal and external homodromous double-thread structures are designed on the guide unit 32, the replacement of the guide unit 32 is avoided, the online adjustment is only needed, and the dovetail connection structure with one wide end and one narrow end is designed at the joint of the mechanical arm 317, so that the mechanical arm 317 is convenient to replace and position.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (8)

1. The utility model provides a spectacle case arm material feeding unit which characterized in that: the device comprises a first conveying belt (1), a second conveying belt (2) and a mechanical arm assembly (3) longitudinally erected above the first conveying belt (1) and the second conveying belt (2), wherein the first conveying belt, the second conveying belt (2) and the mechanical arm assembly are arranged in parallel;

the mechanical arm assembly (3) comprises a mechanical arm unit (31), a guide unit (32), a blocking unit (33) and a control unit (34);

the mechanical arm unit (31) comprises first gantry brackets (311) fixed on two sides of the first conveying belt (1), a linear sliding table (312) is fixed on an upper cross beam of the first gantry brackets (311), the linear sliding table (312) longitudinally spans above the first conveying belt (1) and the second conveying belt (2), one end of the linear sliding table (312) is connected with a motor (313), a sliding block (314) is assembled on the linear sliding table (312), the sliding block (314) can longitudinally slide along the linear sliding table (312), the sliding block (314) is connected with a first double-rod air cylinder (315), a piston rod of the first double-rod air cylinder (315) vertically stretches downwards, a first connecting block (316) is arranged at the lower end of the piston rod of the first double-rod air cylinder (315), and the first connecting block (316) is connected with a manipulator (317) for taking and placing iron shells;

the manipulator (317) comprises a supporting plate (3171) and a sucking disc (3172), the sucking disc (3172) is fixedly connected to the bottom surface of the supporting plate (3171), a dovetail groove (3161) is formed in the bottom surface of the first connecting block (316), one end of the dovetail groove (3161) is wide, the other end of the dovetail groove is narrow, a dovetail (31711) matched with the dovetail groove is formed in the top surface of the supporting plate (3171), a threaded hole is formed in the center of the top surface of the dovetail groove (3161), a steel ball positioning screw (3162) is arranged in the threaded hole, and a ball socket (31712) is formed in the top surface of the dovetail and is matched with the steel ball of the steel ball positioning screw (3162);

the guide units (32) are symmetrically arranged on two sides of the first conveying belt (1) and used for gathering and aligning scattered iron shells on the first conveying belt (1), the left end inlet of the guide unit (32) is V-shaped, and the right end outlet of the guide unit is parallel to the first conveying belt (1) and extends to the lower part of the manipulator (317);

each guide unit (32) comprises a flange (321) and an adjusting assembly (322); the flange (321) is fixedly connected with the adjusting assembly (322), and the adjusting assembly (322) comprises a base (3221), an adjusting nut (3222) and an adjusting rod (3223); the base (3221) is fixed on one side of the first conveying belt (1), a long groove parallel to the first conveying belt (1) is formed in the upper portion of the base (3221), one end, far away from the center of the first conveying belt (1), of the base (3221) is connected with the adjusting nut (3222) through threads, the adjusting nut (3222) is cylindrical, an inner hole of the adjusting nut is provided with threads which are the same as the outer circle in rotation direction, one end of the adjusting rod (3223) is provided with threads, and the adjusting nut passes through an opening of one end, close to the center of the first conveying belt (1), of the base (3221) to be screwed with the inner hole of the adjusting nut (3222) through threads;

the material blocking unit (33) is arranged at the right end of the guide unit (32) and is used for blocking and tightly fastening an iron shell aligned by the guide unit (32), and comprises a second gantry bracket (331) fixed on two sides of the first conveying belt (1), a second double-rod air cylinder (332) is fixedly connected in the middle of an upper cross beam of the second gantry bracket (331), a piston rod of the second double-rod air cylinder (332) stretches vertically downwards, a second connecting block (333) is arranged at the lower end of the piston rod of the second double-rod air cylinder (332), and a blocking block (334) is assembled on the lower plane of the second connecting block (333);

the control unit (34) comprises a controller (341), a first electromagnetic valve (342), a second electromagnetic valve (343) and a sensor (344), wherein the controller (341) is fixedly arranged on the upper cross beam of the first gantry bracket (311) and positioned on the back surface of the linear sliding table (312), the sensor (344) is arranged at a plurality of positions, the controller (341) is electrically connected with the motor (313), the first electromagnetic valve (342), the second electromagnetic valve (343) and the sensor (344) as well as the suction disc (3172), the first electromagnetic valve (342) is in air connection with the first double-rod cylinder (315), the second electromagnetic valve (343) and the second double-rod cylinder (332) are in air connection, the signal input end of the controller (341) is connected with the sensor (344), and the signal output end of the controller (341) is connected with the motor (313) and the first electromagnetic valve (342) and the suction disc (3172).

2. The spectacle case robot arm feeding device of claim 1 wherein: the sensors (344) are respectively arranged at two ends of the linear sliding table (312) and are used for controlling the sliding distance of the sliding blocks (314); the upper end and the lower end of the first double-rod air cylinder (315) are used for controlling the upper position and the lower position of the manipulator (317); the upper end and the lower end of the second double-rod air cylinder (332) are used for controlling the lifting distance of the blocking block (334).

3. The spectacle case robot arm feeding device of claim 1 wherein: the flange (321) is vertical to the upper surface of the first conveying belt (1), the right end of the flange (321) is parallel to the first conveying belt (1), the left end of the flange (321) is gradually close to the edge of the first conveying belt (1), and the parallel part of the flange (321) and the first conveying belt (1) is fixed with the unthreaded end of the adjusting rod (3223).

4. The spectacle case robot arm feeding device of claim 1 wherein: the bottom surface of the supporting plate (3171) is fixedly connected with a plurality of suckers (3172), and the suckers (3172) are in one-to-one correspondence with iron shells aligned and tightly combined by the guide unit (32) and the blocking unit (33).

5. The spectacle case robot arm feeding device of claim 1 wherein: limit stops (31713) are arranged on two sides of the large end of the dovetail (31711), and the limit stops (31713) are fixed with the first connecting block (316) through bolts.

6. The spectacle case robot arm feeding device of claim 2 wherein: the adjusting components (322) of each guiding unit (32) are two sets.

7. The spectacle case robot arm feeding device of claim 2 wherein: the cross section of the adjusting rod (3223) matched with the base (3221) is non-circular.

8. The spectacle case robot arm feeding device of claim 4 wherein: the small end of the dovetail (31711) on the top surface of the supporting plate (3171) is provided with a chamfer (31714).