CN219817693U

CN219817693U - Automatic punching device for spectacle case

Info

Publication number: CN219817693U
Application number: CN202321291089.2U
Authority: CN
Inventors: 冯丙亮; 王文超
Original assignee: Hebei Lanchi Industrial Co ltd
Current assignee: Hebei Lanchi Industrial Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-10-13
Anticipated expiration: 2033-05-25

Abstract

The utility model provides an automatic punching device for a spectacle case. The automatic punching device for the glasses case comprises a first conveying belt, a second conveying belt, a collecting assembly, a pushing assembly and a punching assembly, and mainly solves the problems that the feeding efficiency of an iron glasses case is low, the conveying belt is not wear-resistant, and the compacting and positioning are not easy to adjust. A second conveyer belt with a metal bedplate and a chain is arranged at the tail part of the original first conveyer belt in the same direction, so that the wear resistance of the conveyer belt is improved; the second conveyor belt is additionally provided with an aggregate assembly for centralizing and aligning the iron shells, so that the feeding efficiency is improved; the pushing assembly and the punching assembly are respectively arranged on two sides of the second conveying belt, and the blanking guide groove is additionally arranged, so that the pushing opening, the punching station and the blanking guide groove are in linear communication, and the discharging is completed during feeding. In addition, the horizontal and vertical compression of the iron shell adopts an adjustable spring compression bar structure, and the lateral limiting adjustment adopts a double-head reverse threaded rod structure, so that the compression positioning is easy to adjust.

Description

Automatic punching device for spectacle case

Technical Field

The utility model relates to the field of automatic production lines of spectacle cases, in particular to an automatic punching device for spectacle cases.

Background

The eyeglass case can be manufactured from a variety of materials, one of which is an iron-wrapped eyeglass case. The iron shell of the iron spectacle case is automatically produced, the iron sheet roll is firstly punched into a shell by an automatic punching machine, then the side surface of the automatic punching device is punched, the punched iron shell is conveyed to a punching station through a PVC conveying belt, and a pushing mechanism of the automatic punching device pushes the iron shell into a punching positioning cavity from the conveying belt. The shell formed by punching is generally scattered and falls on the PVC conveyer belt, a certain distance is kept between adjacent iron shells, the iron shells are not concentrated, the pushing mechanism cannot realize continuous feeding, the production efficiency of the punching process is low, and the punching process is directly carried out from the PVC conveyer belt to push materials, so that the abrasion to the PVC conveyer belt is large. In addition, the existing automatic punching device also has the problem that the positioning device is not easy to debug.

Disclosure of Invention

In view of the above, the present utility model aims to provide an automatic punching device for spectacle case, wherein a second conveyor belt with high wear resistance is arranged at the tail end of the original PVC conveyor belt, and a collecting device is arranged on the second conveyor belt, so that iron shells scattered on the first conveyor belt are aligned in a concentrated manner, and then continuously pushed into the automatic punching device by a pushing device, and the unloading is completed while the feeding is performed, thereby improving the production efficiency.

In addition, the problem that the positioning device is not easy to debug is solved by adopting the adjustable spring compression bar and the double-head reverse threaded rod.

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

an automatic punching device for a spectacle case comprises a first conveying belt, a second conveying belt, a collecting assembly, a pushing assembly and a punching assembly;

the second conveying belt comprises a frame, a metal bedplate is paved on the top surface of the frame, one end of the metal bedplate is high and the other end of the metal bedplate is low, the high end of the metal bedplate is overlapped with the first conveying belt, two chains are arranged on the upper surface of the metal bedplate in parallel, and the chains penetrate through rectangular holes formed in the two ends of the metal bedplate and are meshed with chain wheels arranged below the rectangular holes;

the aggregate assembly comprises guide plates, blocking blocks and anti-stacking plates, wherein the guide plates are symmetrically arranged on two sides of the second conveying belt and used for gathering and aligning iron shells on the first conveying belt, the blocking blocks are arranged at the right end of the guide plates and used for blocking and stopping the iron shells, a material pushing port is reserved between the blocking blocks and the guide plates, and the anti-stacking plates are arranged above the guide plates and used for preventing the iron shells from being stacked;

the pushing assembly is fixed on one side of the second conveying belt and comprises a double-rod cylinder and a pushing block, and the pushing block is fixed on the end part of a piston rod of the double-rod cylinder and is aligned with the pushing port;

the punching assembly is fixed on the other side of the second conveying belt and comprises a base, a positioning part and a punching part, wherein a first sliding rail is vertically arranged on the right side of the base, and a second sliding rail is horizontally arranged on the left side of the base; the positioning part moves up and down along the first sliding rail, a punching station is arranged in the positioning part, the positioning part is flush with the lower end of the metal platen when moving up, the punching station is communicated with the pushing port, the punching station in the positioning part is aligned with a punch of the punching part when moving down, and the punch can slide left and right along the second sliding rail.

The further technical proposal is that: the four chain wheels are coaxially arranged at two ends of the lower surface of the metal platen, and each chain is meshed with two chain wheels positioned at one side of the metal platen.

The further technical proposal is that: the anti-stacking plate is parallel to the metal platen, and an inclined surface is arranged on the surface, opposite to the metal platen, of the anti-stacking plate, close to the end of the first conveying belt.

The further technical proposal is that: and one side, away from the second conveying belt, of the base is provided with a blanking guide groove, and the blanking guide groove is communicated with the punching station.

The further technical proposal is that: the punching part is provided with a punching female die, a guide die, a punch and a hydraulic cylinder from left to right along the second sliding rail, wherein the punching female die, the guide die and the hydraulic cylinder are fixedly connected with the base, the punching female die is positioned below the punching station, and the left end face of the guide die is flush with the left end face of the blocking block.

The further technical proposal is that: the positioning part comprises a positioning platform, a bracket, a vertical compression bar, a horizontal compression bar and a lateral limit, the right end of the positioning platform is close to the left end face of the guide die, the punching station is positioned on the upper surface of the positioning platform, a through hole is formed in the punching station of the positioning platform, and when the positioning part moves downwards along the first sliding rail, the punching female die can extend to the inner cavity of the iron shell along the through hole;

the bracket comprises a vertical plate and a top plate, wherein the vertical plate is vertically fixed on the left side of the upper plane of the positioning platform, and the top plate is fixed on the top surface of the vertical plate through a bolt and is parallel to the positioning platform; the bottom of the vertical plate is movably inserted with a horizontal compression bar, the top plate is movably inserted with a vertical compression bar, and the lateral limit is provided with two parts which are respectively positioned at two sides of the punching station.

The further technical proposal is that: the vertical compression bar and the horizontal compression bar are axially sleeved with compression springs towards one side of the punching station, and the other side of the horizontal compression bar, which is far away from the punching station, is provided with U-shaped locking blocks in a clamping mode.

The further technical proposal is that: the lateral limiting device comprises a lateral limiting cylinder, a limiting plate and a limiting groove, wherein the lateral limiting cylinder drives the limiting plate to slide left and right in the limiting groove, the sliding direction of the limiting plate is the same as that of the punch, the limiting plate is fixed at the end part of a piston rod of the lateral limiting cylinder, and the limiting groove is fixed below the lateral limiting cylinder.

The further technical proposal is that: the right side of the vertical plate is provided with a dovetail groove, the dovetail groove is parallel to the positioning platform, two movable dovetail blocks are arranged in the dovetail groove, the left end face of each movable dovetail block is provided with a lateral limiting cylinder, an adjusting screw is connected between the two movable dovetail blocks in a threaded mode, the directions of threads at two ends of the adjusting screw are opposite, two fixed dovetail blocks are arranged at the mouths of two ends of the dovetail groove, positioning screws are screwed on the fixed dovetail blocks along the direction of the dovetail groove, and two pressing screws are screwed on the bottom of the dovetail groove vertically and are used for pressing the movable dovetail blocks.

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

according to the automatic punching device for the glasses case, the second conveyor belt with the metal platen is arranged at the tail end of the original first conveyor belt in the same direction, scattered iron shells on the first conveyor belt are concentrated and aligned through the conveyor chain and the collecting device of the metal platen, then pushing and feeding are carried out according to beats, the pushing opening, the punching station and the discharging channel are communicated in a straight line, and discharging is completed while the pushing cylinder is used for feeding, so that the production efficiency is improved.

In addition, the simple spring compression bar is adopted to realize the positioning adjustment in the horizontal direction and the vertical direction, and the double-head reverse threaded rod is adopted to realize the lateral positioning adjustment, so that the problem that the positioning device is not easy to debug is solved.

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 schematic view of an overall structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a second conveyor belt according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a punch assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a punch according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a positioning portion according to an embodiment of the present utility model;

reference numerals illustrate:

1. a first conveyor belt; 2. a second conveyor belt; 3. an aggregate assembly; 4. a pushing component; 5. a punching assembly; 21. a frame; 22. a metal platen; 23. a chain; 24. a sprocket; 221. a rectangular hole; 31. a guide plate; 32. a blocking block; 33. an anti-piling plate; 34. a pushing port; 331. an inclined plane; 41. a double-rod cylinder; 42. a pushing block; 51. a base; 52. a positioning part; 53. a punching part; 54. a blanking guide groove; 511. a first slide rail; 512. a second slide rail; 521. a punching station; 522. positioning a platform; 523. a bracket; 524. a vertical compression bar; 525. a horizontal compression bar; 526. lateral limiting; 527. a compression spring; 528. a locking block; 531. stamping a female die; 532. a guide die; 533. a punch; 534. a hydraulic cylinder; 5221. a through hole; 5231. a riser; 5232. a top plate; 5261. a lateral limit cylinder; 5262. a limiting plate; 5263. a limit groove; 52311. a dovetail groove; 52312. a movable dovetail block; 52313. adjusting a screw; 52314. fixing the dovetail block; 52315. a set screw; 52316. and (5) pressing the screw.

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 an automatic punching device for a spectacle case, which comprises a first conveying belt 1, a second conveying belt 2, a collecting assembly 3, a pushing assembly 4 and a punching assembly 5.

The automatic punching device of spectacle case of this embodiment through setting up second conveyer belt 2 and collection material subassembly 3, has solved first conveyer belt and has not wear-resisting to and the iron casing is scattered, can't improve the problem of pushing away material frequency.

Based on the above overall description, as shown in fig. 1 to 5, the second conveyor belt 2 of the automatic punching device for a spectacle case of the present embodiment includes a frame 21, a wear-resistant metal platen 22 is laid on the top surface of the frame 21, in order to facilitate collection of iron shells, one end of the metal platen 22 is high and one end is low, the high end thereof is overlapped with the first conveyor belt 1, and two chains 23 are arranged in parallel on the upper surface of the metal platen 22, and are used for driving the iron shells conveyed by the first conveyor belt 1 to be gathered from the high end to the low end. The chain 23 is threaded down through rectangular holes 221 formed in both ends of the metal platen 22 and engaged with a sprocket 24 provided below the rectangular holes 221.

The aggregate assembly 3 comprises a guide plate 31, blocking blocks 32 and anti-stacking plates 33, wherein the guide plate 31 is symmetrically arranged on two sides of the second conveying belt 2 and used for gathering and aligning iron shells on the first conveying belt 1, the blocking blocks 32 are arranged at the right end of the guide plate 31 and used for blocking and stopping the iron shells, a material pushing opening 34 is reserved between the blocking blocks 32 and the guide plate 31, and the anti-stacking plates 33 are erected above the guide plate 31 and used for preventing the iron shells from being stacked.

The pushing assembly 4 is fixed on one side of the second conveyor belt 2 and comprises a double-rod air cylinder 41 and a pushing block 42, the pushing block 42 is fixed on the end part of a piston rod of the double-rod air cylinder 41 and aligned with the pushing port 34, when the piston rod stretches out, an iron shell close to the blocking block 42 is pushed from the second conveyor belt 2 to the punching assembly 5, meanwhile, the stretched piston rod can block other iron shells aligned by the collecting assembly, and when the piston rod is retracted, the pushing block 42 cannot be blocked with the next iron shell to be pushed, so that the quick homing is ensured, and when the piston rod drives the pushing block to be completely retracted, the next iron shell can be conveyed to the pushing port by a chain and is close to the blocking block.

The punching assembly 5 is fixed on the other side of the second conveyor belt 2 and comprises a base 51, a positioning part 52 and a punching part 53, wherein a first sliding rail 511 is vertically arranged on the right side of the base 51, and a second sliding rail 512 is horizontally arranged on the left side of the base 51; the positioning part 52 moves up and down along the first sliding rail 511, a punching station 521 is arranged in the positioning part 52, the positioning part 52 is flush with the lower end of the metal platen 22 when moving up, the punching station 521 is communicated with the pushing port 34, and at the moment, the double-rod air cylinder 41 of the pushing assembly 4 extends out of the piston rod to push an iron shell to the punching station 521; when the positioning portion 52 moves down, the dual-rod cylinder 41 of the pushing assembly 4 will retract the piston rod, when the positioning portion 52 moves down to the position, the base 51 will support the punching station 521 in the positioning portion 52 to align with the punch 533 of the punching portion 53, and the punch 533 can slide left and right along the second slide rail 512 to complete the side punching of the iron shell.

Four chain wheels 24 are arranged under the metal platen 22, and in order to ensure the synchronization of the two chains 23, the four chain wheels 24 are coaxially arranged at two ends of the lower surface of the metal platen 22, and each chain 23 is respectively meshed with the two chain wheels 24 positioned at one side of the metal platen 22.

The anti-stacking plate 33 is parallel to the metal platen 22, and an inclined surface 331 is arranged on the surface of the anti-stacking plate 33 opposite to the metal platen 22 near the end of the first conveyor belt 1, so that stacking of iron shells can be prevented, and the iron shells can also pass through conveniently.

The base 51 is provided with a blanking guide groove 54 on one side far away from the second conveyor belt 2, the blanking guide groove 54 is communicated with a punching station 521, and the punched iron shell can be pushed out of the punching station 521 by the iron shell to be punched and slides into the container along the blanking guide groove 54.

The punching part 53 is provided with a punching female die 531, a guiding die 532, a punch 533 and a hydraulic cylinder 534 along the second sliding rail 512 from left to right, the punching female die 531, the guiding die 532 and the hydraulic cylinder 534 are fixedly connected with the base 51, the punching female die 531 is located below the punching station 521, the left end face of the guiding die 532 is level with the left end face of the blocking block 32, and the guiding die 532 plays a role in guiding the punch 533 and positioning the iron shell to be punched in the horizontal direction.

The positioning part 52 comprises a positioning platform 522, a bracket 523, a vertical compression bar 524, a horizontal compression bar 525 and a lateral limit 526, the right end of the positioning platform 522 is close to the left end face of the guide die 532, the punching station 521 is positioned on the upper surface of the positioning platform 522, a through hole 5221 is formed in the punching station 521 of the positioning platform 522, when the positioning part 52 moves downwards along the first sliding rail 511, the punching female die 531 can extend to the inner cavity of the iron shell along the through hole 5221, and forms shearing with the side wall of the iron shell by the punch guided by the guide die 532, so that punching is completed.

The bracket 523 comprises a vertical plate 5231 and a top plate 5232, the vertical plate 5231 is vertically fixed on the left side of the upper plane of the positioning platform 522, the top plate 5232 is fixed on the top surface of the vertical plate 5231 by bolts, the holes of the fixing bolts of the top plate 5232 are long slot holes and can be adjusted left and right, and the top plate 5232 is parallel to the positioning platform 522; the bottom of the vertical plate 5231 is movably inserted with a horizontal compression bar 525, the top plate 5232 is movably inserted with a vertical compression bar 524, the lateral limiting plates 526 are two, and the two lateral limiting plates are respectively positioned at two sides of the punching station 521, and can realize the positioning of the iron shell in 6 directions together with the guide die 532 and the positioning platform 522.

The vertical compression bar 524 and the horizontal compression bar 525 are axially sleeved with a compression spring 527 towards one side of the punching station 521, the other side of the vertical compression bar and the horizontal compression bar, which is far away from the punching station 521, is provided with a U-shaped locking block 528 in a clamping manner, the U-shaped locking block 528 is provided with a locking groove, and a locking screw is arranged at the grooving position.

The lateral limit 526 comprises a lateral limit cylinder 5261, a limit plate 5262 and a limit groove 5263, the lateral limit cylinder 5261 drives the limit plate 5262 to slide left and right in the limit groove 5263, the sliding direction of the limit plate 5262 is the same as that of the punch 533, the limit plate 5262 is fixed at the end part of a piston rod of the lateral limit cylinder 5261, and the limit groove 5263 is fixed below the lateral limit cylinder 5261. When the positioning part 52 moves upwards, the piston rod of the lateral limiting cylinder 5261 extends out, the limiting plate 5262 is far away from the punching station 521, the punching station 521 is communicated with the pushing port 34 and the blanking guide groove 54, and the iron shell with punched holes is pushed into the blanking guide groove 54 while the iron shell is pushed into the punching station by the pushing component 4.

The right side of the vertical plate 5231 is provided with a dovetail groove 52311, the dovetail groove 52311 is parallel to the positioning platform 522, two movable dovetail blocks 52312 are arranged in the dovetail groove 52311, the left end face of each movable dovetail block 52312 is provided with a lateral limiting cylinder 5261, an adjusting screw 52313 is connected between the two movable dovetail blocks 52312 in a threaded manner, the directions of threads at two ends of the adjusting screw 52313 are opposite, the adjusting screw 52313 is rotated, the two movable dovetail blocks 52312 can drive the lateral limiting cylinder 5261 to be close to or far away from the punching station 521 at the same time, two fixed dovetail blocks 52314 are arranged at the mouths at two ends of the dovetail groove 52311, the fixed dovetail blocks 52314 are screwed with positioning screws 52315 along the direction of the dovetail groove 52311, the positions of the two movable dovetail blocks 52312 in the groove can be fixed by rotating the positioning screws 52315, and the two pressing screws 52316 are screwed on the bottom of the dovetail groove 52311 and are used for pressing the movable dovetail blocks 52312 to be fixed.

The glasses case automatic punching device of this embodiment sets up comparatively wear-resisting second conveyer belt 2 on the basis of original first conveyer belt 1 to scattered iron shells on the first conveyer belt have concentrated the alignment, have improved propelling movement material loading frequency, thereby have improved production efficiency. In addition, the punching positioning is not easy to adjust, and the adjustable spring pressing rod and double-head reverse threaded rod structure is adopted, so that the pressing device of the iron shell is simple and convenient to adjust.

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

1. An automatic punching device of spectacle case, its characterized in that: comprises a first conveyer belt (1), a second conveyer belt (2), an aggregate component (3), a pushing component (4) and a punching component (5);

the second conveying belt (2) comprises a frame (21), a metal platen (22) is laid on the top surface of the frame (21), one end of the metal platen (22) is high, the other end of the metal platen is low, the high end of the metal platen is overlapped with the first conveying belt (1), two chains (23) are arranged on the upper surface of the metal platen (22) in parallel, and the chains (23) are meshed with chain wheels (24) arranged below the rectangular holes (221) in a penetrating mode from rectangular holes (221) formed in two ends of the metal platen (22);

the aggregate assembly (3) comprises a guide plate (31), blocking blocks (32) and anti-stacking plates (33), wherein the guide plate (31) is symmetrically arranged on two sides of the second conveying belt (2) and used for gathering and aligning iron shells on the first conveying belt (1), the blocking blocks (32) are arranged at the right end of the guide plate (31) and used for blocking and stopping the iron shells, a pushing port (34) is reserved between the blocking blocks (32) and the guide plate (31), and the anti-stacking plates (33) are arranged above the guide plate (31) in a supporting mode and used for preventing the iron shells from being stacked;

the pushing assembly (4) is fixed on one side of the second conveying belt (2) and comprises a double-rod cylinder (41) and a pushing block (42), and the pushing block (42) is fixed on the end part of a piston rod of the double-rod cylinder (41) and is aligned with the pushing port (34);

the punching assembly (5) is fixed on the other side of the second conveying belt (2) and comprises a base (51), a positioning part (52) and a punching part (53), wherein a first sliding rail (511) is vertically arranged on the right side of the base (51), and a second sliding rail (512) is horizontally arranged on the left side of the base; the positioning part (52) moves up and down along the first sliding rail (511), a punching station (521) is arranged in the positioning part, the positioning part (52) is flush with the lower end of the metal platen (22) when moving up, the punching station (521) is communicated with the pushing port (34), the punching station (521) in the positioning part (52) is aligned with a punch (533) of the punching part (53) when moving down, and the punch (533) can slide left and right along the second sliding rail (512).

2. An automatic punching device for spectacle case according to claim 1, characterized in that: the chain wheels (24) are arranged at two ends of the lower surface of the metal platen (22) in a coaxial mode, and each chain (23) is meshed with two chain wheels (24) arranged on one side of the metal platen (22).

3. An automatic punching device for spectacle case according to claim 1, characterized in that: the anti-stacking plate (33) is parallel to the metal platen (22), and an inclined surface (331) is arranged on the surface, opposite to the metal platen (22), of the anti-stacking plate (33) close to the end of the first conveying belt (1).

4. An automatic punching device for spectacle case according to claim 1, characterized in that: and a blanking guide groove (54) is formed in one side, far away from the second conveying belt (2), of the base (51), and the blanking guide groove (54) is communicated with the punching station (521).

5. An automatic punching device for spectacle case according to claim 1, characterized in that: punching part (53) are provided with punching die (531), direction mould (532), drift (533) and pneumatic cylinder (534) from the left and right side along second slide rail (512), punching die (531) direction mould (532), and pneumatic cylinder (534) all with base (51) fixed connection, punching die (531) are located punching station (521) below, direction mould (532) left end face with block piece (32) left end face parallel and level.

6. An automatic punching device for spectacle case according to claim 5, characterized in that: the positioning part (52) comprises a positioning platform (522), a bracket (523), a vertical compression bar (524), a horizontal compression bar (525) and a lateral limit (526), the right end of the positioning platform (522) is close to the left end face of the guide die (532), the punching station (521) is positioned on the upper surface of the positioning platform (522), a through hole (5221) is formed in the punching station (521) of the positioning platform (522), and when the positioning part (52) moves downwards along the first sliding rail (511), the punching female die (531) can extend to the inner cavity of the iron shell along the through hole (5221);

the bracket (523) comprises a vertical plate (5231) and a top plate (5232), the vertical plate (5231) is vertically fixed on the left side of the upper plane of the positioning platform (522), and the top plate (5232) is fixed on the top surface of the vertical plate (5231) through bolts and is parallel to the positioning platform (522); the bottom of the vertical plate (5231) is movably inserted with a horizontal compression bar (525), the top plate (5232) is movably inserted with a vertical compression bar (524), and the lateral limiting parts (526) are two and are respectively positioned at two sides of the punching station (521).

7. An automatic punching device for spectacle case as claimed in claim 6, wherein: the vertical compression bar (524) and the horizontal compression bar (525) are axially sleeved with compression springs (527) towards one side of the punching station (521), and U-shaped locking blocks (528) are clamped on the other side, far away from the punching station (521).

8. An automatic punching device for spectacle case as claimed in claim 6, wherein: lateral limit (526) is including lateral limit cylinder (5261), limiting plate (5262) and spacing groove (5263), lateral limit cylinder (5261) drive limiting plate (5262) are in control slip in spacing groove (5263), limiting plate (5262) slip the direction with drift (533), limiting plate (5262) are fixed in lateral limit cylinder (5261) piston rod tip, spacing groove (5263) are fixed in lateral limit cylinder (5261) below.

9. An automatic punching device for spectacle case as claimed in claim 8, wherein: the utility model discloses a movable dovetail block (52312) of aircraft, including riser (5231) and fixed dovetail block (52314), riser (5231) right flank has seted up dovetail (52311), dovetail (52311) with locating platform (522) are parallel, are provided with two movable dovetail blocks (52312) in it, install the left end face of movable dovetail block (52312) lateral limit cylinder (5261), threaded connection has adjusting screw (52313) between two movable dovetail blocks (52312), the screw thread direction at adjusting screw (52313) both ends is opposite, dovetail (52311) both ends oral area is provided with two fixed dovetail blocks (52314), fixed dovetail block (52314) have set screw (52315) along dovetail (52311) direction rotation, dovetail (52311) bottom is perpendicular two movable dovetail block (52312) has two compression screw (52316) soon for compressing tightly movable dovetail block (52312).