CN111531007B - Special punching device for processing glasses tube and use method thereof - Google Patents

Abstract

The invention relates to the field of glasses processing equipment, in particular to a special punching device for processing glasses tubes and a using method thereof. The special punching device for processing the spectacle tube and the use method thereof have the advantages that two processes of expanding the spectacle tube and die-casting are carried out successively, continuous operation is realized, the clamping and fixing of the spectacle tube are realized automatically in the processes of expanding the tube and die-casting, stable clamping force is kept, the spectacle tube does not need to be taken down and clamped again for multiple times, the operation is simplified, the production efficiency is greatly improved, the automation and integration degree of equipment are high, the structure and the spatial layout of the equipment are simplified, and the management is convenient.

Description

Special punching device for processing glasses tube and use method thereof

Technical Field

The invention relates to the field of glasses processing equipment, in particular to a punching device special for processing a glasses tube and a using method thereof.

Background

The spectacle tube is required to be processed into two mutually communicated double-round-tube structures at one end of the spectacle tube during processing, the existing processing procedures are tube expansion and die casting generally, one end of the spectacle tube is required to be clamped and fixed on a tube expansion table during processing, then tube expansion operation is carried out, the spectacle tube is taken down and conveyed to a die casting workbench after the tube expansion is finished, and is compressed and fixed again, and then die casting treatment is carried out. The whole processing process is complicated, the glasses tube needs to be taken down for multiple times and clamped again, the labor intensity of workers is increased, the production efficiency is low, required equipment is more, and management is inconvenient.

Disclosure of Invention

The invention aims to provide a punching device special for processing an eyeglass tube and a using method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a dedicated stamping device of glasses tube processing, includes the base, is fixed with the portal frame on the base, is fixed with on the base to be used for the fixed location clamping mechanism of glasses tube centre gripping, and the crossbeam middle part of portal frame is fixed with vertical decurrent cylinder, and die-casting mechanism is connected in the cylinder drive, and die-casting mechanism lower part is provided with the expand tube mechanism, and die-casting mechanism is connected with the transmission of expand tube mechanism, and the expand tube mechanism can support with location clamping mechanism and detain the contact.

Preferably, the die-casting mechanism includes the push pedal, and the upper surface middle part of push pedal is fixed at the piston rod lower extreme of cylinder, and the piston rod mutually perpendicular of push pedal and cylinder, the fixed vertical decurrent mandrel in lower surface middle part of push pedal, the mandrel includes connecting plate and post, the post is provided with two and the symmetry formula is fixed on the vertical side of connecting plate both sides, the cross section of post is semi-circular, and the vertical central line fixed connection of connecting plate and post curved surface.

Preferably, a third sliding rod is symmetrically fixed at the front end and the rear end of the push plate, an inclination angle of 20-25 degrees is formed between the third sliding rod and the push plate, the distance between the lower ends of the three sliding rods is larger than the distance between the upper ends of the three sliding rods, an upright post corresponding to the third sliding rod is fixed on the base and located below the third sliding rod, an ejector rod is connected to the upper end of the upright post in a sliding mode, a vertically through sliding groove is formed in the ejector rod, the three sliding rods can be inserted into the sliding groove in a sliding mode, pressing dies are fixed at the opposite ends of the two ejector rods, the two pressing dies are symmetrically arranged, and concave die grooves are formed in the opposite surfaces of the two pressing dies.

Preferably, the pipe expanding mechanism comprises two symmetrical sliding rods arranged at the left end and the right end of the push plate, the two sliding rods are connected to the push plate in a sliding mode and arranged in the vertical direction, the upper ends of the two sliding rods are located above the push plate, a limiting plate II is fixed to the upper ends of the two sliding rods, a sliding frame is fixed to the lower end of the two sliding rods, and the sliding frame is connected with the push plate through a spring II.

Preferably, the bottom of the sliding frame is slidably connected with a sliding bar, the sliding bar is perpendicular to the sliding bar, two opposite ends of the sliding bar are respectively fixed with two pipe expansion rods, the two pipe expansion rods are symmetrically arranged, the cross sections of the pipe expansion rods are semicircular, the two pipe expansion rods can be folded to form a complete cylindrical rod, the pipe expansion rods can also be folded with corresponding column rods to form a complete cylindrical rod, and the shape of the core mold after being folded with the two pipe expansion rods corresponds to the concave mold groove.

Preferably, one end lower side of the sliding strip away from the pipe expansion rod is fixed with a first ejection block, the lower end of the first ejection block is a wedge-shaped surface, the wedge-shaped surface faces the pipe expansion rod, a first cantilever is arranged under the sliding strip and fixed on the portal frame, a second vertical upward ejection block is fixed on the upper side of the first cantilever, and the wedge-shaped surface matched with the lower end of the first ejection block is arranged at the upper end of the second ejection block.

Preferably, a protruding rod is fixed on the upper side of one end, away from the tube expansion rod, of the sliding strip, a second cantilever is fixed above the protruding rod, the second cantilever is fixed on the portal frame, the protruding rod can be abutted and buckled with the second cantilever, and the protruding rod is connected with the second sliding rod in a three-phase mode through a spring.

Preferably, the positioning and clamping mechanism comprises a first sliding rod which is connected to the first cantilever in a sliding mode, the first sliding rod is arranged in the vertical direction, the upper end of the first sliding rod is located above the first cantilever, a first limiting plate is fixed to the upper end of the first sliding rod, the first limiting plate is connected with the first cantilever through a first spring, and the first limiting plate can be abutted to and buckled with the sliding strip.

Preferably, the lower extreme of slide bar one is provided with the splint that are used for pressing from both sides tight glasses pipe, the upper surface center department of base is fixed with centering rod, two splint symmetry lies in the both sides of centering rod, one side that splint deviate from centering rod is fixed with the floor, the lower extreme dead axle of floor rotates the lower extreme of connecting rod one, the upper end dead axle of connecting rod one rotates the lower extreme of connecting rod one, the middle part dead axle of connecting rod one rotates the middle part of connecting rod two, connecting rod two is the same with connecting rod structure, the bar groove has been seted up to the upper end of floor, the upper end of connecting rod two is fixed with the pin rod, and the pin rod is pegged graft at the bar inslot and the pin rod can slide in the bar groove, the lower extreme dead axle of connecting rod two rotates to be connected on the base.

In addition, the application also provides a using method of the special punching device for processing the glasses tube, which comprises the following steps:

the method comprises the following steps: the method comprises the following steps that a spectacle tube is placed in a positioning and clamping mechanism, a die-casting mechanism is driven to move downwards through an air cylinder, so that the die-casting mechanism drives a tube expanding mechanism to move downwards to expand the spectacle tube for processing, and the tube expanding mechanism drives the positioning and clamping mechanism to clamp and fix the spectacle tube;

step two: the die-casting mechanism is driven by the cylinder to move downwards to perform die-casting processing on the lens tube;

step three: after the processing of the spectacle tube is finished, the die-casting mechanism is driven by the air cylinder to move upwards for demolding, the die-casting mechanism drives the tube expanding mechanism to move upwards for resetting, and after the tube expanding mechanism moves upwards for resetting, the positioning and clamping mechanism loosens the spectacle tube and then takes the spectacle tube down from the positioning and clamping mechanism.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, two processes of expanding and die-casting the spectacle tube are carried out in the process of machining the spectacle tube by the whole device, continuous operation is realized, clamping and fixing of the spectacle tube are automatically realized in the processes of expanding and die-casting, stable clamping force is kept, the spectacle tube does not need to be taken down for clamping again for multiple times, operation is simplified, time and labor are saved, production efficiency is greatly improved, automation and integration degree of equipment are high, equipment structure and spatial layout are simplified, and management is convenient.

Drawings

FIG. 1 is a first schematic view of an assembly structure according to the present invention;

FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1;

FIG. 3 is a second schematic view of the assembly structure of the present invention;

FIG. 4 is a schematic view of a cross-sectional structure B-B in FIG. 3;

FIG. 5 is an enlarged view of the structure at C in FIG. 3;

FIG. 6 is a third schematic view of the final assembly structure of the present invention;

FIG. 7 is a schematic view of the cross-sectional structure of FIG. 6 taken along line D-D;

fig. 8 is a schematic view of the cross-sectional structure E-E of fig. 7.

In the figure: 1-a base; 2-a carriage; 3-a first spring; 4-spring two; 5-spring three; 6-limiting plate I; 7-sliding bar I; 8-a tube expansion rod; 9-clamping plate; 10-cantilever one; 11-a cylinder; 12-a second limiting plate; 13-push plate; 14-sliding bar II; 15-core mold; 16-cantilever two; 17-a nose bar; 18-a slide bar; 19-a top block I; 20-top block two; 21-a portal frame; 22-sliding bar III; 23-a column; 24-a top rod; 25-a chute; 26-pressing mould; 27-link one; 28-link two; 29-a rib plate; 30-a strip-shaped groove; 31-a centering rod; 32-a cavity; 33-a connecting plate; 34-pole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a technical solution:

the utility model provides a dedicated stamping device of glasses tube processing, includes base 1, is fixed with portal frame 21 on the base 1, is fixed with on the base 1 and is used for the fixed positioning clamping mechanism of glasses tube centre gripping, and the crossbeam middle part of portal frame 21 is fixed with vertical decurrent cylinder 11, and die-casting mechanism is connected in the cylinder 11 drive, and die-casting mechanism lower part is provided with the expand tube mechanism, and die-casting mechanism is connected with the transmission of expand tube mechanism, and the expand tube mechanism can support with positioning clamping mechanism and detain the contact.

In this embodiment, as shown in fig. 1 and 8, the die-casting mechanism includes a push plate 13, the middle portion of the upper surface of the push plate 13 is fixed at the lower end of the piston rod of the cylinder 11, the push plate 13 is perpendicular to the piston rod of the cylinder 11, the middle portion of the lower surface of the push plate 13 is fixed with a vertically downward core mold 15, the core mold 15 includes a connecting plate 33 and a post rod 34, the post rods 34 are provided with two and symmetrically fixed on the vertical side edges at two sides of the connecting plate 33, the cross section of the post rod 34 is semicircular, and the connecting plate 33 is fixedly connected with the vertical central line of the.

In this embodiment, as shown in fig. 7 and 8, three sliding rods 22 are symmetrically fixed to the front end and the rear end of the push plate 13, an inclination angle of 20 ° to 25 ° is formed between the three sliding rods 22 and the push plate 13, a distance between the lower ends of the three sliding rods 22 is greater than a distance between the upper ends of the three sliding rods 22, an upright column 23 corresponding to the three sliding rods 22 is fixed to the base 1, the upright column 23 is located below the three sliding rods 22, an ejector rod 24 is slidably connected to the upper end of the upright column 23, a vertically through sliding groove 25 is formed in the ejector rod 24, the three sliding rods 22 are slidably inserted into the sliding groove 25, dies 26 are fixed to opposite ends of the two ejector rods 24, the two dies 26 are symmetrically arranged, and a concave die groove 34 is formed in opposite surfaces of the two dies 26.

In this embodiment, as shown in fig. 1, 3 and 6, the tube expansion mechanism includes two sliding rods 14 symmetrically disposed at the left and right ends of the push plate 13, the two sliding rods 14 are slidably connected to the push plate 13, the two sliding rods 14 are disposed in the vertical direction, the upper ends of the two sliding rods 14 are located above the push plate 13, a second limiting plate 12 is fixed at the upper ends of the two sliding rods 14, a carriage 2 is fixed at the lower end of the two sliding rods 14, and the carriage 2 is connected to the push plate 13 through a second spring 4.

In this embodiment, as shown in fig. 1, 3, and 6, the bottom of the carriage 2 is slidably connected with a slide bar 18, the slide bar 18 is perpendicular to the second slide bar 14, two tube expansion rods 8 are fixed at opposite ends of the two slide bars 18, the two tube expansion rods 8 are symmetrically arranged, the cross section of the tube expansion rod 8 is semicircular, the two tube expansion rods 8 can be folded to form a complete cylindrical rod, the tube expansion rod 8 can also be folded with a corresponding post rod 34 to form a complete cylindrical rod, and the shape of the core mold 15 folded with the two tube expansion rods 8 corresponds to the concave mold groove 32.

In this embodiment, as shown in fig. 1, 3 and 6, a first ejector block 19 is fixed to a lower side of one end, away from the tube expansion rod 8, of the slide bar 18, a lower end of the first ejector block 19 is a wedge-shaped surface, the wedge-shaped surface faces the tube expansion rod 8, a first cantilever 10 is arranged right below the slide bar 18, the first cantilever 10 is fixed to the portal frame 21, a second vertical upward ejector block 20 is fixed to an upper side of the first cantilever 10, and a wedge-shaped surface matched with a lower end of the first ejector block 19 is arranged at an upper end of the second ejector block 20.

In this embodiment, as shown in fig. 1, 3 and 6, a protruding rod 17 is fixed on an upper side of one end of the slide bar 18, which is far away from the tube expansion rod 8, a second cantilever 16 is fixed above the protruding rod 17, the second cantilever 16 is fixed on the gantry 21, the protruding rod 17 can be in abutting contact with the second cantilever 16, and the protruding rod 17 is connected with the second slide bar 14 through a third spring 5.

In this embodiment, as shown in fig. 1, 3 and 6, the positioning and clamping mechanism includes a first sliding rod 7 slidably connected to a first cantilever 10, the first sliding rod 7 is disposed in a vertical direction, an upper end of the first sliding rod 7 is located above the first cantilever 10, a first limiting plate 6 is fixed to an upper end of the first sliding rod 7, the first limiting plate 6 is connected to the first cantilever 10 through a first spring 3, and the first limiting plate 6 can be in abutting contact with a sliding strip 18.

In this embodiment, as shown in fig. 5, the lower end of the first sliding rod 7 is provided with a clamping plate 9 for clamping an eyeglass tube, a centering rod 31 is fixed at the center of the upper surface of the base 1, the two clamping plates 9 are symmetrically located at two sides of the centering rod 31, a rib plate 29 is fixed at one side of the clamping plate 9 away from the centering rod 31, the lower end of the rib plate 29 is rotatably connected to the lower end of the first connecting rod 27, the upper end of the first connecting rod 27 is rotatably connected to the lower end of the first connecting rod 27, the middle part of the first connecting rod 27 is rotatably connected to the middle part of the second connecting rod 28, the second connecting rod 28 and the first connecting rod 27 have the same structure, the upper end of the rib plate 29 is provided with a strip-shaped groove 30, the upper end of the second connecting rod 28 is fixed with a pin rod, the pin rod is inserted into the strip-shaped groove 30 and can slide in the strip-shaped groove 30, and the lower end of the second connecting rod 28 is rotatably connected to the base 1.

In addition, the application also provides a using method of the invention, and particularly provides a special punching device for processing the glasses tube, which comprises the following steps:

the method comprises the following steps: fig. 1 shows the initial state of the whole device, in which the two tube-expanding rods 8 are involuted to form a complete cylinder, and the two clamping plates 9 are far away from the centering rod 31, so as to place the spectacle tube to be processed on the centering rod 31;

one end of a spectacle tube to be processed, which does not need to be punched, is inserted and sleeved on the centering rod 31 through a hand or a mechanical hand of an operator, the centering rod 31 is used for placing the spectacle tube conveniently, the placing position of the spectacle tube does not need to be positioned when each spectacle tube is processed, time and labor are saved, then the air cylinder 11 is started, after the air cylinder 11 works, the piston rod of the air cylinder extends out to push the push plate 13 to move downwards, the push plate 13 moves downwards to synchronously drive the core mold 15 and the two slide bars 14 to move downwards, the two slide bars 14 move downwards to synchronously drive the corresponding slide bars 18 to move downwards through the sliding frame 2, further, the two tube expansion rods 8 are synchronously driven to move downwards and are inserted into the upper end of the spectacle tube, as shown in figure 3, the slide bars 18 move downwards to synchronously drive the first ejector blocks 19 to move downwards and approach the second ejector blocks 20, when the wedge-shaped surface at the lower end of the first ejector blocks 19 is abutted and buckled with the wedge-shaped surface at the upper ends of the second ejector blocks 20, the wedge-shaped surfaces of the two ejector blocks 20 apply horizontal force to the wedge-shaped surfaces of the first ejector blocks 19, so that the first ejector blocks 19 move close to the portal frame 21, namely the two first ejector blocks 19 are far away from each other, and further the first ejector blocks 19 drive the two tube expansion rods 8 to be far away from each other through the sliding strips 18, so that tube expansion operation on the upper end portions of the spectacle tubes is achieved, a next step of die-casting is conducted, the corresponding springs III 5 are stretched through the convex rods 17 while the sliding strips 18 are far away from each other, so that the springs III 5 obtain restoring force, and the restoring force has the effect of enabling the convex rods 17 to approach the corresponding slide rods II 14, so that the two tube expansion rods 8 are restored to the initial state after the spectacle tubes are machined;

in the process of downward moving the slide bar 18, after the slide bar 18 is abutted and connected with the first limit plate 6, downward pressure is applied to the first limit plate 6, so that the first limit plate 6 compresses the first spring 3, the first spring 3 obtains an upward restoring force, the first limit plate 6 moves downward and simultaneously drives the first slide rod 7 to move downward, as shown in fig. 5, downward movement of the first slide rod 7 applies downward pressure to the upper end of the first connecting rod 27, so that the leftward and rightward facing included angle between the first connecting rod 27 and the second connecting rod 28 is reduced, further the lengths of the first connecting rod 27 and the second connecting rod 28 in the horizontal direction are increased, as one ends of the first connecting rod 27 and the second connecting rod 28, which are far away from the clamping plate 9, are restrained in the horizontal direction, the first connecting rod 27 and the second connecting rod 28 push the clamping plate 9 to approach and clamp the eye tube through the rib plate 29 in the horizontal direction, further the eye tube expanding and the eye tube is clamped, the stability of the eye tube during processing is maintained, so that the eye tube is prevented from shaking due to the tube expansion effect of the tube expansion rod 8, the processing quality is prevented from being reduced, and the product yield is improved;

step two; as shown in fig. 3 and 6, after the lower end of the top block one 19 is in abutting joint with the cantilever one 10, the distance between the two pipe expanding rods 8 is the largest, the pipe expanding operation is completed, the air cylinder 11 continues to push the push plate 13 to move downwards, since the more constrained the top block one 19 is by the cantilever one 10, the top block one 19, the slide bar 18, the carriage 2 and the slide bar two 14 remain stationary, the downward movement of the push plate 13 compresses the spring two 4, so that the second spring 4 obtains an upward restoring force, thereby facilitating the reset of the push plate 13 after the processing of the spectacle tube is finished, the downward movement of the push plate 13 synchronously drives the core mold 15 to move downward, so that the core mold 15 is inserted into the dilated eyeglass tube from between the two tube expansion rods 8, as shown in fig. 8, and the two posts 34 on the core mold 15 and the corresponding tube expansion rods 8 are combined into a complete cylindrical rod so as to cooperate with the pressing mold 26 to perform die-casting processing on the eye tube;

as shown in fig. 2, 4 and 7, during the downward movement of the push plate 13, the three slide rods 22 are synchronously driven to move downward, the downward movement of the three slide rods 22 is inserted into the corresponding slide grooves 25 in the ejector rods 24, and after the two slide rods 22 move downward, the distance between the two slide grooves 25 in the horizontal direction becomes smaller and smaller, so that the two ejector rods 24 approach each other under the transmission action between the slide grooves 25 and the three slide rods 22, and further the two pressing dies 26 approach each other, the approach of the two pressing dies 26 enables the ocular canal to complete the die-casting process through the pressing action of the concave die groove 32 and the core die 15, and two communicated cylindrical tube structures are formed, during the die-casting process, because the slide bar 18 remains stationary, the clamping force of the clamping plate 9 on the ocular canal is maintained stably and firmly through the first limit plate 6, the first slide rod 7, the first connecting rod 27 and the second connecting rod 28, thereby maintaining the stability of the ocular canal during the processing, therefore, the eye tube is prevented from shaking in the die-casting process, the processing quality is reduced, and the product yield is improved;

the whole process comprises two processes of tube expansion and die casting of the spectacle tube, continuous operation is realized, the clamping and fixing of the spectacle tube are automatically realized in the tube expansion and die casting processes, stable clamping force is kept, the spectacle tube does not need to be taken down and clamped again for multiple times, the operation is simplified, time and labor are saved, the production efficiency is greatly improved, the automation and integration degree of equipment are high, the structure and spatial layout of the equipment are simplified, and the management is convenient;

step three: after the processing of the spectacle tube is completed, the cylinder 11 is started to work reversely, the cylinder 11 drives the push plate 13 to move upwards by contracting the piston rod thereof, as shown in fig. 7, 4 and 2, the push plate 13 moves upwards to synchronously drive the third slide rod 22 to move upwards, the third slide rod 22 moves upwards to enable the two ejector rods 24 to be away from each other and reset through the transmission action between the third slide rod 22 and the sliding groove 25, so as to drive the two pressing dies 26 to be away from each other and reset, and the push plate 13 moves upwards to synchronously drive the core die 15 to move upwards, so that the core die 15 is drawn out from the spectacle tube, so as to realize the demoulding of the spectacle tube, as shown in fig. 6, 3 and 1, no pressure is applied to the second spring 4 in the process of moving upwards the push plate 13, so as to enable the second spring 4 to extend and reset, the restoring force of the second spring 4 in the process of resetting enables the sliding frame 2 to keep the sliding bar 18 immobile and still in the state of applying force to the positioning and clamping mechanism, so that the two clamping plates 9 keep the clamping force on the spectacle tube, thereby ensuring the smooth demoulding of the core mould 15 and avoiding the clamping of the spectacle tube on the core mould 15 and the tube expansion rod 8, thereby facilitating the taking out of the processed spectacle tube, when the push plate 13 is contacted with the second limit plate 12, the second limit plate 12 drives the second slide rod 14 to move upwards and synchronously drives the sliding frame 2 and the slide strip 18 to move upwards, the slide strip 18 moves upwards and synchronously drives the first ejector block 19 to move upwards and is far away from the second ejector block 20, thereby leading the second ejector block 20 to have no force on the first ejector block 19, leading the convex rod 17 to approach the corresponding second slide rod 14 under the restoring force action of the third spring 5, further leading the two tube expansion rods 8 to approach each other in the process of moving upwards and resetting through the slide strip 18 and to form a complete cylindrical rod for the processing of the next spectacle tube expansion, leading no downward pressure to the first limit plate 6 after the upward movement of the slide strip 18, thereby leading the first slide rod 7 to move upwards and reset under the upward restoring force action of the first spring 3, the upward movement of the sliding rod I7 applies upward pulling force to the upper end of the connecting rod I27, so that the included angle between the connecting rod I27 and the connecting rod II 28 in the left-right direction is increased, the length of the connecting rod I27 and the length of the connecting rod II 28 in the horizontal direction are reduced, and as the ends, far away from the clamping plate 9, of the connecting rod I27 and the connecting rod II 28 are restrained in the horizontal direction, the clamping plate 9 is pushed to be far away from and loosened towards the eye tubes through the rib plates 29 in the horizontal direction, so that the eye tubes are convenient to take down from the centering rod 31.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a dedicated stamping device of glasses pipe processing, includes base (1), be fixed with portal frame (21), its characterized in that on base (1): a positioning and clamping mechanism for clamping and fixing the spectacle tube is fixed on the base (1), a vertically downward air cylinder (11) is fixed in the middle of a cross beam of the portal frame (21), the air cylinder (11) is in driving connection with a die-casting mechanism, a tube expanding mechanism is arranged at the lower part of the die-casting mechanism and is in transmission connection with the tube expanding mechanism, and the tube expanding mechanism can be in abutting contact with the positioning and clamping mechanism; the die-casting mechanism comprises a push plate (13), the middle part of the upper surface of the push plate (13) is fixed at the lower end of a piston rod of the cylinder (11), the push plate (13) is perpendicular to the piston rod of the cylinder (11), a vertically downward core mold (15) is fixed in the middle part of the lower surface of the push plate (13), the core mold (15) comprises a connecting plate (33) and a post rod (34), the post rod (34) is provided with two vertical sides which are symmetrically fixed on two sides of the connecting plate (33), the cross section of the post rod (34) is semicircular, and the connecting plate (33) is fixedly connected with the vertical central line of the curved surface of the post rod (34); a third sliding rod (22) is symmetrically fixed at the front end and the rear end of the push plate (13), an inclination angle of 20-25 degrees is formed between the third sliding rod (22) and the push plate (13), and the distance between the lower ends of the two third sliding rods (22) is larger than the distance between the upper ends of the two third sliding rods (22), an upright post (23) corresponding to the third sliding rod (22) is fixed on the base (1), the upright post (23) is positioned below the third sliding rod (22), the upper end of the upright post (23) is connected with a push rod (24) in a sliding way, the push rod (24) is provided with a sliding groove (25) which is communicated up and down, the third sliding rod (22) can be inserted in the sliding groove (25) in a sliding way, the opposite ends of the two ejector rods (24) are respectively fixed with a pressing die (26), the two pressing dies (26) are symmetrically arranged, and the opposite surfaces of the two pressing dies (26) are provided with die grooves (32).

2. The punching device special for processing the glasses tube according to claim 1, wherein: the expand tube mechanism includes that the symmetry formula sets up two (14) slide bars at push pedal (13) left and right sides both ends, two (14) slide bar sliding connection are on push pedal (13), and two (14) vertical direction settings of slide bar to the upper end of two (14) slide bars is located the top of push pedal (13), the upper end of two (14) slide bars is fixed with two (12) limiting plates, the lower extreme of two (14) slide bars is fixed with balladeur train (2), be connected through two (4) springs between balladeur train (2) and push pedal (13).

3. The punching device special for processing the glasses tube according to claim 2, wherein: the bottom sliding connection of balladeur train (2) has draw runner (18), draw runner (18) and slide bar two (14) mutually perpendicular, two the one end that draw runner (18) is relative all is fixed with expand tube pole (8), and two expand tube pole (8) symmetry sets up, the cross section of expanding tube pole (8) is semi-circular, and two expand tube pole (8) can be to closing and be a complete cylindrical pole, expand tube pole (8) also can be closed with corresponding post pole (34) and be a complete cylindrical pole, and the shape of mandrel (15) after closing with two expand tube pole (8) with die groove (32) corresponding.

4. The punching device special for processing the glasses tube according to claim 3, wherein: one end downside that expanded pipe pole (8) were kept away from in draw runner (18) is fixed with kicking block (19), the lower extreme of kicking block (19) is the wedge face, and the wedge face is towards expanded pipe pole (8), be provided with cantilever (10) under draw runner (18), cantilever (10) are fixed on portal frame (21), and cantilever (10) upside is fixed with vertical ascending kicking block two (20), the upper end of kicking block two (20) is provided with the wedge face with the lower extreme looks adaptation of kicking block (19).

5. The punching device special for processing the glasses tube according to claim 3, wherein: a convex rod (17) is fixed to the upper side of one end, far away from the pipe expansion rod (8), of the sliding strip (18), a second cantilever (16) is fixed to the upper portion of the convex rod (17), the second cantilever (16) is fixed to the portal frame (21), the convex rod (17) can be in abutting-buckling contact with the second cantilever (16), and the convex rod (17) is connected with the second sliding rod (14) through a third spring (5).

6. The punching device special for processing the glasses tube according to claim 3, wherein: the positioning and clamping mechanism comprises a first sliding rod (7) which is connected to a first cantilever (10) in a sliding mode, the first sliding rod (7) is arranged in the vertical direction, the upper end of the first sliding rod (7) is located above the first cantilever (10), a first limiting plate (6) is fixed to the upper end of the first sliding rod (7), the first limiting plate (6) is connected with the first cantilever (10) through a first spring (3), and the first limiting plate (6) can be in abutting-buckling contact with a sliding strip (18); the lower end of the sliding rod I (7) is provided with clamping plates (9) used for clamping an eyeglass tube, a centering rod (31) is fixed at the center of the upper surface of the base (1), the two clamping plates (9) are symmetrically positioned at two sides of the centering rod (31), a ribbed plate (29) is fixed at one side of each clamping plate (9) departing from the centering rod (31), the lower end fixed shaft of each ribbed plate (29) is rotatably connected with the lower end of the corresponding connecting rod I (27), the upper end fixed shaft of the corresponding connecting rod I (27) is rotatably connected with the lower end of the corresponding connecting rod I (27), the middle fixed shaft of the corresponding connecting rod I (27) is rotatably connected with the middle of the corresponding connecting rod II (28), the corresponding connecting rod II (28) is identical in structure to the corresponding connecting rod I (27), a strip-shaped groove (30) is formed in the upper end of each ribbed plate (29), a pin rod is fixed at the upper end of the corresponding connecting rod II (28), the pin rod is inserted in the strip-shaped groove (30) and can slide in the strip-shaped groove (30), the lower end of the second connecting rod (28) is fixedly connected to the base (1) in a rotating mode.

7. The use method of the punching device special for processing the glasses tube according to claim 6, is characterized in that: the method comprises the following steps:

the method comprises the following steps: the glasses tube is placed in the positioning and clamping mechanism, the die-casting mechanism is driven to move downwards through the air cylinder (11), so that the tube expanding mechanism is driven to move downwards through the die-casting mechanism to expand the glasses tube for processing, and the positioning and clamping mechanism is driven by the tube expanding mechanism to fixedly clamp the glasses tube;

step two: the die-casting mechanism is driven by the cylinder (11) to move downwards to perform die-casting processing on the lens tube;

step three: after the processing of the spectacle tube is finished, the die-casting mechanism is driven by the air cylinder to move upwards for demolding, the die-casting mechanism drives the tube expanding mechanism to move upwards for resetting, and after the tube expanding mechanism moves upwards for resetting, the positioning and clamping mechanism loosens the spectacle tube and then takes the spectacle tube down from the positioning and clamping mechanism.

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