CN110774656A - Machining equipment for suspension hole of outer package of product - Google Patents

Abstract

The invention discloses a processing device for hanging holes of outer packages of products, which comprises a belt conveyor line, wherein one end of the conveyor line is a feeding part, the other end of the conveyor line is a blanking part, the conveyor line comprises a plurality of conveyor belts which are arranged at intervals, a punching mechanism for punching the hanging holes is arranged on the conveyor line, the punching mechanism comprises a punch head positioned above the conveyor line and a lower die matched with the punch head, the lower die comprises a bearing surface which is not higher than the upper surface of the conveying line and a positioning structure which enables the outer package of the product to be positioned, the positioning structure has a closed state for blocking the outer package of the product and an open state for releasing the outer package of the product, the lower die is associated with a lifting mechanism, the lifting mechanism can drive the lower die to move up and down, when the outer product package is moved to the lower die from the feeding part, the positioning structure is in a closed state, so that the outer product package is positioned on the bearing surface. The invention can ensure the uniformity of the hanging hole and can fully reduce the processing cost of the hanging hole.

Description

Machining equipment for suspension hole of outer package of product

Technical Field

The invention relates to the technical field of product packaging equipment, in particular to machining equipment for a suspension hole of an outer package of a product.

Background

Currently, most products require a paper packaging box or a plastic film packaging case to effectively protect the products and facilitate the sale. Particularly, with the increase of self-service sale forms such as supermarkets and the like, the packages of a plurality of products are packaged by adopting transparent plastic films. Such plastic packaging cases are generally produced by a vacuum forming process, which has two half-shells with a cavity provided therein, between which a bending line is provided. When needing packing the product, put into the cavity of one side half shell earlier the product, half shell at the fifty percent discount opposite side, two half shells with be in the same place, wrap up the product in the packing cavity that constitutes by the cavity of two half shells to the piecing together, then mode such as the connection arch of accessible close fit and connection pit between two half shells is examined and is leaned on and be in the same place. In order to facilitate the hanging of products on the supermarket hanging bar, a hanging hole is usually arranged on the plane part of the two half-shells which are spliced together.

In the prior art, people usually process the suspension holes by two methods, the first method is to punch out corresponding suspension holes on the plane parts of two half shells respectively, and when the two half shells are spliced together, the two suspension holes are superposed with each other to form a suspension hole capable of being suspended on a suspension rod; the second way is to punch out a suspension hole in the planar portion after the two half-shells have been joined together.

For the first mode, the hanging holes can be punched out at the same time when the edges of the vacuum-formed packaging shell are punched out, so that the processing steps and the processing cost are favorably reduced. The second method can ensure complete coincidence and tidiness of the hanging holes, which is beneficial to improving the grade of the product, but the punching process needs to be carried out independently after the product is packaged, thereby increasing the processing steps and the processing cost.

Disclosure of Invention

The invention aims to solve the problems of inconvenient processing of the suspension hole, high processing cost and low overlap ratio of the suspension hole in the conventional film packaging shell during product packaging, and provides processing equipment for the suspension hole of the outer package of the product, which can ensure the uniformity of the suspension hole and fully reduce the processing cost of the suspension hole.

A processing device for hanging holes of outer packages of products comprises a belt type conveying line, wherein one end of the conveying line is a feeding part, the other end of the conveying line is a discharging part, the conveying line comprises a plurality of conveying belts which are arranged at intervals, a punching mechanism for punching out the suspension hole is arranged on the conveying line, the punching mechanism comprises a punch head positioned above the conveying line and a lower die matched with the punch head, the lower die comprises a bearing surface which is not higher than the upper surface of the conveying line and a positioning structure which is used for positioning the outer package of the product, the positioning structure has a closed state for blocking the outer package of the product and an open state for releasing the outer package of the product, the lower die is associated with a lifting mechanism, the lifting mechanism can drive the lower die to move up and down, when the outer product package is moved to the lower die from the feeding part, the positioning structure is in a closed state, so that the outer product package is positioned on the bearing surface.

The processing equipment is suitable for processing the hanging hole on the outer package of the product with the product inside. It is known in the prior art that, regardless of the manner in which the suspension hole is machined, the machining step is carried out as a separate process. That is, it is necessary to separately provide a processing site and a punch press, and a corresponding die, then take the outer package of the product to the side of the punch press, place the outer package of the product on a lower die of the die by an operator, then start the die, move the upper die downward, and punch a hanging hole at a proper position of the outer package of the product. On one hand, the production space and the site can be occupied, on the other hand, the outer package of the product needs to be moved and circulated among different processes and sites, so that the production efficiency is reduced, and the outer package of the product is easy to deform and damage.

The processing equipment comprises a conveying line, so that the outer package of the product needing to be processed with the suspension hole can be placed to a feeding part at one end of the conveying line by an operator, and the conveying line can automatically convey the outer package of the product to the punching mechanism forwards. Because the lower die of the punching mechanism comprises a bearing surface which is not higher than the upper surface of the conveying line and a corresponding positioning structure, the conveying line can convey the outer product package forward to the bearing surface, and the positioning structure is in a closed state, so that the outer product package is prevented from moving forward and is accurately positioned at the bearing surface. And the lifting mechanism associated with the lower die acts to further push the lower die to lift the outer package of the product to move upwards and is matched with the punch above for punching, so that the required suspension hole is processed on the outer package of the product. When the lifting mechanism drives the lower die to descend and reset, the outer product package and the bearing surface are in component force transition to the conveying line, the positioning structure is switched to an open state, the conveying line at the moment continues to drive the outer product package to be conveyed forwards to the blanking part, and the outer product package can automatically fall into the material collecting barrel or be collected and boxed by an operator.

It should be noted that, a forming hole may be provided on the bearing surface, and cutting edges may be provided on the lower edge of the punch and the upper edge of the forming hole, respectively. When the punch and the lower die are close to each other and are matched, the punch and the forming hole can be sheared mutually, so that the suspension hole is punched out of the outer package of the product, and punched waste materials can be discharged downwards through the forming hole.

That is to say, the punching mechanism is arranged on the conveying line, the conveying line can automatically convey the outer package of the product to the punching mechanism, and the punching mechanism can automatically punch the hole, so that the production efficiency is greatly improved, and the occupation of a production field is reduced.

Particularly, the conveying line comprises a plurality of conveying belts which are arranged at intervals, so that the bearing surface can be arranged in a gap between every two adjacent conveying belts, the bearing surface is enabled to be flush with the upper surface of the conveying line, the lifting mechanism is convenient to drive the lower die to lift, and the interference between the conveying line and the punching mechanism is effectively avoided.

Preferably, the punch comprises a punching ring matched with the hanging hole in shape, the lower side edge of the punching ring is a punching edge, the lower die comprises a supporting body and a plastic cushion plate arranged on the supporting body, and the upper surface of the plastic cushion plate forms the bearing surface.

It is known in the prior art that a hanging hole is punched by a punching die which is usually made of a metal plate, the punching die comprises a lower die and an upper die, a forming hole matched with the hanging hole is formed in the lower die, a punch matched with the forming hole is formed in the upper die, and the upper edge of the forming hole and the lower edge of the punch form a sharp cutting edge. When the upper die and the lower die are close to each other and the dies are closed, the cutting edges of the punch and the forming hole form a mutual shearing action, and a required hanging hole can be punched on the outer package of the product. It is understood that the punching die requires extremely high machining accuracy and assembling accuracy to avoid cutting damage between the punch and the forming hole, and therefore, it is expensive to machine and manufacture, and requires installation on a dedicated punch press for use, which is troublesome to install and use.

The punch of the present invention comprises a cutting ring having a cutting edge, i.e. the punch is an annular blade. When needing to go out the hole that hangs on the outer package of product, elevating system drives the lower mould and rises, and the die-cut ring of going up the mould this moment is close to and touches the plastic backing plate, and die-cut sword of die-cut ring downside can be in the outer package of product die-cut one hang the hole. That is, the invention adopts the principle similar to cutting vegetables on a chopping board to punch a hanging hole on the outer package of a product, and because the bearing surface for supporting at the lower side is arranged on the plastic cushion plate with certain hardness, the invention is convenient for punching the hanging hole by the punching blade, can avoid the problems of edge rolling and the like of the punching blade, and is beneficial to prolonging the service life of the punch. When drift and lower mould are close to and form die-cut, can form a micro interference fit between die-cut sword and the plastic backing plate, that is to say, the die-cut sword can cut into in the plastic backing plate to ensure to hang the complete die-cut in hole, produce local adhesion when avoiding punching a hole.

Preferably, a plurality of strip-shaped grooves are formed in the bearing surface, and when the lower die ascends, the conveyor belt of the conveyor line is sunken in the corresponding strip-shaped grooves.

Because the bearing surface is provided with a plurality of strip-shaped grooves, when the lifting mechanism drives the lower die to ascend, the conveyor belt of the conveyor line is sunk in the corresponding strip-shaped groove. That is to say, the supporting surface accessible conveyer belt clearance between this moment upwards removes and holds up the product extranal packing to realize hanging the die-cut of hole, avoid lower mould and transfer chain to produce the interference effectively simultaneously, ensure that the transfer chain can continuous operation and carry the product extranal packing.

In particular, the bearing surface is provided with a strip-shaped groove which can avoid the conveyor belt, so that the lower die can be positioned at the lower side of the conveyor belt, the bearing surface is flush with the upper surface of the conveyor belt or slightly lower than the upper surface of the conveyor belt, the outer package of the product can be smoothly conveyed onto the bearing surface, and the bearing surface can be ensured to have enough external dimension to stably support the outer package of the product.

As preferred, the drift includes the fixed plate, the fixed setting of upside of die-cut ring is on the fixed plate, is equipped with on the fixed plate to be located die-cut intra-annular row material pole, arranges the material pole including the fixed dead lever that sets up on the fixed plate, has cup jointed the row material sleeve that the lower extreme sealed on the dead lever, arranges the material and is equipped with the reset spring who supports and presses the dead lever in the sleeve, arranges the telescopic lower extreme of material and is less than die-cut annular die cutting edge.

The fixed plate can be made of a steel plate, and the upper side of the punching ring can be welded on the fixed plate; or the fixed plate can also be made of a composite plate, a gap matched with the shape of the hanging hole is sawed on the fixed plate by using an electric fretsaw, and then the punching rings welded together end to end are embedded into the gap, so that the punching rings can be reliably fixed on the fixed plate, and the heavy head can be conveniently installed and fixed.

It will be appreciated that, because the hanger hole is typically of a small size, the slug formed after punching and having a shape matching the hanger hole will either be squeezed into the punching ring, making it difficult for the slug to be ejected, or the punching edge will be damaged when the slug is removed, and as the slug in the punching ring grows and fills the punching ring, the punch will not continue to operate properly and punch out the hanger hole. The invention arranges the discharging rod with the end part capable of elastically stretching in the punching ring, and the lower end of the discharging rod is lower than the punching edge of the punching ring. Like this, when the lower mould rises and begins die-cut hanging hole, the product extranal packing plane part that pastes on the lower mould loading end can touch row material pole lower extreme earlier, and the lower extreme of row material pole can elastic retraction to flush with the die-cut sword, and the die-cut sword can be at the plane part die-cut of product extranal packing and hang the hole this moment, and the waste material that forms after the die-cut then extrudes into die-cut intra-annular. When the lower die descends and resets, the telescopic end part of the discharging rod can elastically extend downwards, so that the waste material sheet extruded into the punching ring is pushed outwards, and the punching mechanism is ensured to continuously punch the suspension hole.

Preferably, the circumferential surface of the fixed rod is provided with a guide-in groove axially extending upwards from the lower end surface, a connecting groove formed by transversely bending the upper end of the guide-in groove, and a limiting long groove formed by bending and extending the end part of the connecting groove downwards, and the inner side of an opening at the upper end of the discharge sleeve is provided with a limiting bulge for limiting in the limiting long groove.

Because the inner side of the opening at the upper end of the discharge sleeve is provided with the limiting bulge which is limited in the limiting long groove, on one hand, the downward moving position of the discharge sleeve can be accurately limited, and on the other hand, the discharge sleeve can be effectively prevented from rotating.

Particularly, when the discharging rod is assembled, a reset spring can be placed in the discharging sleeve, then the discharging sleeve is sleeved on the fixed rod, the limiting protrusion of the discharging sleeve is aligned to the leading-in groove of the fixed rod, then the discharging sleeve is pushed and extruded forcibly, the limiting protrusion moves to the position of the connecting groove along the leading-in groove, and the discharging sleeve is rotated at the moment, so that the limiting protrusion can enter the connecting groove. When the limiting protrusion reaches the connecting position of the connecting groove and the limiting long groove, the material discharging sleeve is loosened, the reset spring can push the material discharging sleeve to extend outwards, the limiting protrusion moves along the limiting long groove at the moment until the limiting protrusion is positioned at the end part of the limiting long groove, and the material discharging sleeve can be elastically and slidably connected with the fixed rod.

Preferably, the support body comprises a lifting bottom plate connected with the lifting mechanism and a rotating plate arranged on the lifting bottom plate, the plastic base plate is arranged on the rotating plate, one side edge of the rotating plate is rotationally connected with the lifting bottom plate, the other opposite side edge of the rotating plate is a driving inclined plane which inclines outwards from top to bottom, a transversely arranged telescopic stop lever is arranged above the support body corresponding to the driving inclined plane, the telescopic stop lever comprises a fixed sleeve and a telescopic rod inserted in the fixed sleeve, a telescopic pressure spring which presses against the telescopic rod is arranged in the fixed sleeve, the end surface of the telescopic rod is an avoidance inclined plane which inclines forwards from bottom to top, when the lower die rises, the driving inclined plane pushes the avoidance inclined plane, and the telescopic rod retracts into the fixed sleeve; when the lower die is lifted in place, the telescopic rod extends forwards, and the end part of the telescopic rod is positioned below the rotating plate.

The telescopic stop lever is transversely arranged above the support body, so that when the lifting mechanism drives the lower die to ascend, the driving inclined surface on one side of the rotating plate pushes the avoiding inclined surface at the end part of the telescopic stop lever, a transverse component force is formed between the driving inclined surface and the avoiding inclined surface, and the lower die can smoothly continue to move upwards in the fixed sleeve in which the telescopic rod retracts. Because the inner side acting on the driving inclined plane forms a downward component force, the rotating plate can not rotate; when the lower die ascends to the right position, the driving inclined plane is separated from the avoiding inclined plane, the telescopic rod extends forwards, the end part of the telescopic rod is positioned below the rotating plate, and the punch punches a hanging hole in the outer package of the product. When the lifting mechanism drives the lower die to move downwards and reset, one side of the rotating plate is blocked by the telescopic rod to rotate upwards, and the inclined rotating plate can enable the outer package of the product placed on the bearing surface of the rotating plate to automatically roll onto the conveying belt and forwards convey the outer package to the blanking part through the conveying belt, so that automatic punching of the hanging hole can be realized.

Preferably, the positioning structure comprises two positioning cylinders which are oppositely positioned at the left side and the right side of the conveying line, a piston rod of each positioning cylinder is connected with a positioning push block, the opposite sides of the two positioning push blocks are respectively provided with a semi-cavity matched with the outer shape of the outer package of the product, when the two positioning cylinders act to drive the left positioning push block and the right positioning push block to move relatively to be in butt joint, the positioning structure is in a closed state, and the left semi-cavity and the right semi-cavity are spliced into a positioning cavity matched with the outer package of the product.

The positioning cylinder can conveniently control the position of the positioning push block, so that the positioning structure can be switched back and forth between a closed state and an open state. Particularly, the positioning push block pushed leftwards and rightwards can accurately position the outer package of the product, and further the consistency of the positions of punched suspension holes is ensured.

Therefore, the invention has the following beneficial effects: the cooling device can quickly and effectively cool the variable frequency controller, ensures the normal work of the variable frequency controller, and simultaneously does not increase the power consumption of the water pump motor.

Drawings

Fig. 1 is a schematic view of a product package.

Fig. 2 is a schematic diagram of an embodiment of the present invention.

Fig. 3 is a partial top view of a transmission line.

FIG. 4 is a schematic view of a mating arrangement of the punch and the lower die.

Fig. 5 is a schematic view of a construction of the discharge rod.

Fig. 6 is a schematic view of the structure of the telescopic bar and the lower mold.

Fig. 7 is a schematic view of the engagement of the outer package of products with the locating structure.

In the figure: 1. the device comprises a conveying line 11, a conveying belt 12, a feeding part 13, a blanking part 2, a punch 21, a fixing plate 22, a punching ring 221, a punching blade 23, a discharging rod 231, a fixing rod 232, a discharging sleeve 233, a return spring 234, a guide groove 235, a connecting groove 236, a limiting long groove 237, a limiting protrusion 3, a lower die 31, a supporting body 311, a lifting bottom plate 312, a rotating plate 313, a driving inclined surface 32, a plastic cushion plate 321, a bearing surface 33, a telescopic stop rod 331, a fixing sleeve 332, a telescopic rod 333, a telescopic pressure spring 334, an avoiding inclined surface 34, a strip-shaped groove 4, a lifting cylinder 5, a product outer package 51, a hanging hole 6, a positioning cylinder 61 and a positioning.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

A machining device for hanging holes in outer packages of products is suitable for punching hanging holes 51 in outer packages 5 of products with products inside as shown in figure 1, so that the products can be hung and displayed when being sold in supermarkets and the like. The outer package of the product is usually formed by vacuum forming a plastic film, which includes two overlapped planar portions, and the hanging hole is formed in the planar portion.

Specifically, as shown in fig. 2 and 3, the processing equipment includes a belt conveyor line 1, the conveyor line includes a driving roller at the front end and a driving roller at the rear end and a plurality of driven rollers in the middle, and a plurality of long round flexible conveyor belts 11 wound on the rollers, the conveyor belts are arranged at intervals in the width direction, and when the driving roller rotates, the driving roller can drive the conveyor belts to continuously move, so that the outer packages of the products placed at the feeding part at the rear end of the conveyor line can be conveyed forward to the discharging part at the front end of the conveyor line.

In order to realize automatic punching of hanging holes in outer packages of products, a punching mechanism for punching the hanging holes can be arranged in the middle of the conveying line, the punching mechanism comprises a punch 2 positioned above the conveying line and a lower die 3 matched with the punch, the lower die comprises a bearing surface 321 which is not higher than the upper surface of the conveying line and a positioning structure for positioning the outer packages of the products, the positioning structure has a closed state for blocking the outer packages of the products and an open state for releasing the outer packages of the products, and the lower die is connected with a piston rod of a vertically arranged lifting cylinder 4 so as to drive the lower die to move up and down.

When the outer package of the product is placed to the feeding part 12 at the rear end of the conveying line by an operator and is conveyed to the position of the lower die by the conveying belt, the positioning structure is in a closed state, so that the outer package of the product is prevented from moving forwards continuously, and the outer package of the product is positioned at the position corresponding to the bearing surface. And then, the lifting cylinder acts to push the lower die and lift the outer package of the product to move upwards, the bearing surface of the lower die is matched with the punch above the lower die for punching, and a required hanging hole is processed on the outer package of the product.

The lifting cylinder drives the lower die to descend and reset until the bearing surface is slightly lower than the upper surface of the conveying line, so that the outer product package is separated from the bearing surface and is transited to the upper surface of the conveying line, the positioning structure is switched to an open state, the conveying line continues to drive the outer product package to be conveyed to the blanking part, and the outer product package can automatically fall into the material collecting barrel or be collected and boxed by an operator.

Preferably, we can make the bearing surface 5mm-10mm lower than the upper surface of the conveying line to ensure the transition between the bearing surface and the upper surface of the conveying line.

It should be noted that, a forming hole may be provided on the bearing surface, and cutting edges may be provided on the lower edge of the punch and the upper edge of the forming hole, respectively. At this time, the punch and the forming hole constitute a simple punching die. When the punch and the lower die are close to and are matched with each other, the punch and the forming hole can be sheared mutually, so that the suspension hole is punched out of the outer package of the product, and punched waste materials can be gradually discharged downwards through the forming hole.

The conveying line comprises a plurality of conveying belts which are arranged at intervals, so that the bearing surface can be arranged at a gap between every two adjacent conveying belts, the bearing surface is not higher than the upper surface of the conveying line, the lifting cylinder is convenient to drive the lower die to lift, the interference between the conveying line and the punching mechanism is effectively avoided, and meanwhile, the outer package of the product can be smoothly transited to the bearing surface from the conveying line to be punched or smoothly transited to the conveying line from the bearing surface to be continuously transmitted forwards.

In order to simplify the structure of the punch and reduce the manufacturing cost of the punch, as shown in fig. 4, the punch comprises a fixing plate 21, a punching ring 22 matching the shape of the hanging hole, and the lower side edge of the punching ring is a punching edge 221; correspondingly, the lower die comprises a support body 31 and a plastic cushion plate 32 arranged on the support body, and the upper surface of the plastic cushion plate forms the bearing surface.

When the outer package of product location was in loading board department, the lift cylinder drove the lower mould and rises, and the die-cut ring of going up the mould this moment is close to and touches the plastic backing plate of lower mould, and die-cut sword of die-cut ring downside can be in the outer package of product die-cut one and hang the hole. It should be noted that an interference range of 0.2mm-0.5mm can be formed between the punch and the plastic cushion plate of the lower die, that is, the punching blade will cut into the plastic cushion plate, thereby ensuring the complete punching of the suspension hole and avoiding the local adhesion during punching. The plastic backing plate can adopt an ABS plate with the thickness of 3mm, and when the number of the punching suspension holes is gradually increased and the cutting marks on the surface of the plastic backing plate are increasingly deep and more, the normal punching of the suspension holes can be kept only by replacing the plastic backing plate.

As shown in fig. 7, the positioning structure may include two positioning cylinders 6 perpendicular to the conveying line and horizontally arranged, the two positioning cylinders are oppositely located at the left and right sides of the conveying line, a piston rod of the positioning cylinder is connected with a positioning push block 61, one side of the two positioning push blocks opposite to each other is respectively provided with a semi-cavity adapted to the shape of the outer package of the product, when the two positioning cylinders act to drive the left and right positioning push blocks to move relatively to butt joint, the positioning structure is in a closed state, and the left and right semi-cavities are spliced to form a positioning cavity adapted to the outer package of the product. In this embodiment, the outer package is substantially rectangular and the central portion bulges to form a packaging cavity for receiving the product, so that the half-cavity is provided as a rectangular notch, which can be spliced into a rectangular positioning cavity adapted to the outer package. In addition, the longitudinal side edge of the half concave cavity is inclined towards the outer side close to one end of the feeding part, so that a horn mouth used for leading in is formed on one side of the opening of the spliced positioning concave cavity, and the outer package of the product can enter the positioning concave cavity to be accurately positioned. When the positioning cylinder drives the positioning push block to retract, the positioning structure is in an open state, and the conveying line can drive the outer product package to move forwards.

In addition, one side of the outer package of the product far away from the hanging hole needing punching can be placed forwards, so that the upper surface of the lower die can be made into a stepped surface, and the front surface is lower than the rear surface. When the outer package of the product is moved to the position of the bearing surface, the lifting cylinder drives the lower die to ascend, the lower surface of the front part is attached to the surface of a packaging cavity of the outer package of the product, and the higher surface of the back part is attached to a plane part used for punching a suspension hole on the outer package of the product, namely, the higher part of the back part can be provided with a plastic cushion plate, so that the bearing surface matched with the punch is formed.

It should be noted that we can set up the position ring muscle on the lower mould upper surface to the plastic backing plate location in the position ring is within. Because the rear side of the outer package of the product is not obstructed by the positioning structure, the bearing surface of the rear part can be properly prolonged, so that the area of the plastic cushion plate is increased.

In particular, the center of the punch and the center of the plastic cushion plate can be eccentrically arranged in the front-back direction and the left-right direction. When the number of the punched hanging holes is gradually increased, and the cutting marks on the surface of the plastic cushion plate are deeper and deeper, the plastic cushion plate can be rotated by 180 degrees, so that the cutting marks are kept away from the punch, the effect of the surface of the plastic cushion plate is fully exerted, and the service life of the plastic cushion plate is prolonged. Of course, the plastic pad can be turned over, so that the hanging hole can be punched continuously by using the back surface of the plastic pad.

Preferably, the punching ring is formed by bending a strip of 1mm thick and 40mm to 60 mm wide blades, one side of each blade being a cutting edge. When the head end and the tail end of the bent blade are butted and then welded together, a punching ring can be formed, and the cutting edge of the blade forms a punching edge. The fixed plate can be made of a steel plate, and the upper side of the punching ring can be welded on the fixed plate; or the fixed plate can also be made of a composite plate, a sawing gap matched with the shape of the suspension hole is sawed on the fixed plate by using an electric fretsaw, and then the punching rings welded together end to end are embedded into the sawing gap, so that the punching rings can be reliably fixed on the fixed plate, and the heavy head can be conveniently installed and fixed. Of course, when the fixing plate is sawed by the electric wire saw, the sawing gap needs to be discontinuous, that is, 2 breaking points are reserved on the annular sawing gap, the fixing plate inside the sawing gap is connected with the fixing plate outside the sawing gap, and then a notch corresponding to the breaking point is cut at the edge of the side, far away from the cutting edge, of the blade for forming the punching ring, so that the punching ring formed in a bending mode can be smoothly embedded and fixed in the sawing gap.

It will be appreciated that the waste material formed after blanking, which is shaped to match the suspension hole, will be squeezed into the blanking ring, which, because the blanking ring has a thickness of 1mm and the suspension hole is usually of a small size, will tighten up in the blanking ring, thereby causing difficulties in the discharge of the waste material.

In order to facilitate the discharge of waste materials, as shown in fig. 4 and 5, a fixing plate located inside the punching ring may be provided with a vertical downward discharging rod 23, the discharging rod includes a fixing rod 231 fixedly disposed on the fixing plate, the fixing rod is sleeved with a discharging sleeve 232 with a lower end sealed, a return spring 233 is disposed inside the discharging sleeve, a lower end of the return spring abuts against an inner side wall of the sealing of the discharging sleeve, an upper end of the return spring abuts against the fixing rod, and the lower end of the discharging sleeve is lower than a punching blade of the punching ring by 1mm to 3 mm.

When the lower die rises and starts to punch and hang the hole with the cooperation of drift, the product outer packing plane part that pastes on the lower die loading end can touch earlier the lower extreme of arranging the material sleeve, arranges the material sleeve and can elastically retract, and the plane part punching that the die-cut sword can be wrapped at the product at this moment hangs the hole, and the waste material that forms after the die-cut then extrudes into in the die-cut ring. When the lower die is descended and reset, the discharge sleeve can elastically extend downwards, so that the waste material sheet extruded into the punching ring is pushed outwards, and the punching mechanism is ensured to continuously punch the suspension hole.

It should be noted that the nozzle communicated with the compressed air can be arranged beside the conveying line, and when the lower die descends to reset and the waste material piece is pushed out of the punching ring and falls onto the conveying line, the nozzle is opened, so that the waste material piece can be blown away from the conveying line.

Preferably, a guide groove 234 axially extending upwards from the lower end surface, a connecting groove 235 formed by transversely bending the upper end of the guide groove, and a limiting long groove 236 formed by bending and extending the end part of the connecting groove downwards are arranged on the circumferential surface of the fixed rod, the guide groove, the connecting groove and the limiting long groove are approximately connected in an inverted U shape, and a limiting protrusion 237 limited in the limiting long groove is arranged inside the opening at the upper end of the discharge sleeve. Therefore, the downward moving position of the discharge sleeve can be accurately limited, and the rotation of the discharge sleeve can be effectively avoided.

When the material discharging rod is assembled, a reset spring can be placed in the material discharging sleeve, then the material discharging sleeve is sleeved on the fixed rod, the limiting protrusion of the material discharging sleeve is aligned to the leading-in groove of the fixed rod, then the material discharging sleeve is pushed and extruded forcefully, the limiting protrusion moves to the position of the connecting groove along the leading-in groove, and the material discharging sleeve is rotated at the moment, so that the limiting protrusion can enter the connecting groove. When the limiting protrusion reaches the joint of the connecting groove and the limiting long groove and cannot rotate continuously, the discharge sleeve is loosened, the reset spring can push the discharge sleeve to extend outwards, the limiting protrusion moves along the limiting long groove at the moment until the limiting protrusion is positioned at the end part of the limiting long groove, and the discharge sleeve can be elastically and slidably connected with the fixed rod.

Further, as shown in fig. 6, the support body includes a lifting bottom plate 311 connected to the lifting cylinder, and a rotating plate 312 disposed on the lifting bottom plate, the plastic pad is disposed on the rotating plate, one side edge of the rotating plate and the edge of the lifting bottom plate are rotatably connected by a rotating element such as a hinge, the other opposite side edge of the rotating plate exceeds the lifting bottom plate, and the side surface of the rotating plate on the side is inclined from top to bottom to the outside, thereby forming a driving inclined surface 313. In addition, a transversely-arranged telescopic stop lever 33 is arranged above the supporting body corresponding to the driving inclined plane, the telescopic stop lever comprises a fixed sleeve 331 and a telescopic rod 332 inserted in the fixed sleeve and facing one side of the supporting body, a telescopic pressure spring 333 is arranged in the fixed sleeve, one end of the telescopic pressure spring abuts against the telescopic rod, the other end of the telescopic pressure spring abuts against the bottom of the fixed sleeve, the end face of the telescopic rod is an avoiding inclined plane 334 which inclines forwards from bottom to top, the inclination of the avoiding inclined plane is preferably matched with that of the driving inclined plane, and the avoiding inclined plane is positioned above the driving.

When the lifting cylinder drives the lower die to ascend, the driving inclined surface is in contact with the avoiding inclined surface and pushes the avoiding inclined surface, so that an axial component force is formed on the telescopic rod, the telescopic rod retracts into the fixed sleeve, the lower die can ascend smoothly, and the telescopic rod forms a downward acting force on the rotating plate at the moment, so that the rotating plate can ascend closely to a lifting floor; when the lower die is lifted to the right position and punching of the hanging hole is completed on the outer package of the product, the telescopic rod extends forwards under the action of the telescopic pressure spring, and the end part of the telescopic rod is positioned below the rotating plate on one side of the driving inclined plane; when the lifting cylinder drives the lower die to move downwards and reset, the rotating plate on one side of the driving inclined plane is blocked by the telescopic rod to rotate upwards to form an inclined shape, and the inclined rotating plate can enable the outer package of the product placed on the bearing surface of the rotating plate to automatically roll onto the conveying belt and be conveyed forwards to the blanking part by the conveying belt, so that the automatic punching of the hanging hole can be realized; when the lower die moves downwards to a proper position, one side of the driving inclined plane of the rotating plate is separated from the telescopic rod, so that the lower die automatically rotates downwards to reset under the action of the neutral position.

It should be noted that, in order to facilitate the assembly of the telescopic rod and the fixing sleeve and the axial position limitation of the telescopic rod in the fixing sleeve, a structure similar to that between the discharging sleeve and the fixing rod can be adopted between the telescopic rod and the fixing sleeve.

Preferably, as shown in fig. 3, a plurality of strip-shaped grooves 34 are formed on the carrying surface, and the width of the strip-shaped grooves is larger than that of the conveyor belt, so that the carrying surface is in a zebra shape. When the lower die rises, the conveyor belts of the conveyor lines are sunken in the corresponding strip-shaped grooves, the bearing surfaces can move upwards through the gaps among the conveyor belts and support the outer package of the product, so that the punching of the suspension hole is realized, meanwhile, the interference between the lower die and the conveyor lines is effectively avoided, and the continuous operation of the conveyor lines and the outer package of the product are ensured. It should be noted that the plane part of the outer package of the product, which needs to be punched to form the hanging hole, is positioned on the solid part of the bearing surface.

Claims (7)

1. A processing device for hanging holes of outer packages of products comprises a belt type conveying line, wherein one end of the conveying line is a feeding part, the other end of the conveying line is a discharging part, it is characterized in that the conveying line comprises a plurality of conveying belts which are arranged at intervals, a punching mechanism for punching out the hanging hole is arranged on the conveying line, the punching mechanism comprises a punch head positioned above the conveying line and a lower die matched with the punch head, the lower die comprises a bearing surface which is not higher than the upper surface of the conveying line and a positioning structure which is used for positioning the outer package of the product, the positioning structure has a closed state for blocking the outer package of the product and an open state for releasing the outer package of the product, the lower die is associated with a lifting mechanism, the lifting mechanism can drive the lower die to move up and down, when the outer product package is moved to the lower die from the feeding part, the positioning structure is in a closed state, so that the outer product package is positioned on the bearing surface.

2. The processing equipment for the hanging hole of the outer package of the product as claimed in claim 1, wherein the punch comprises a punching ring with a shape matching with the hanging hole, the lower side edge of the punching ring is a punching edge, the lower die comprises a supporting body and a plastic cushion plate arranged on the supporting body, and the upper surface of the plastic cushion plate forms the bearing surface.

3. The processing equipment for the hanging hole of the outer package of the product as claimed in claim 1, wherein a plurality of strip-shaped grooves are formed on the bearing surface, and when the lower die is lifted, the conveyor belt of the conveyor line is sunk into the corresponding strip-shaped grooves.

4. The processing equipment for the hanging hole of the outer package of the product as claimed in claim 2, wherein the punch comprises a fixing plate, the upper side of the punching ring is fixedly arranged on the fixing plate, a discharging rod positioned in the punching ring is arranged on the fixing plate, the discharging rod comprises a fixing rod fixedly arranged on the fixing plate, a discharging sleeve with a sealed lower end is sleeved on the fixing rod, a return spring abutting against the fixing rod is arranged in the discharging sleeve, and the lower end of the discharging sleeve is lower than the punching edge of the punching ring.

5. The processing equipment for the hanging hole of the outer package of the product as claimed in claim 4, wherein the circumferential surface of the fixing rod is provided with an introduction groove axially extending upwards from the lower end, a connecting groove formed by transversely bending the upper end of the introduction groove, and a limiting long groove formed by bending and extending the end part of the connecting groove downwards, and the inner side of the opening at the upper end of the discharge sleeve is provided with a limiting projection for limiting in the limiting long groove.

6. The processing equipment for the hanging hole of the outer package of the product as claimed in claim 2, wherein the supporting body comprises a lifting bottom plate connected with the lifting mechanism, and a rotating plate arranged on the lifting bottom plate, the plastic backing plate is arranged on the rotating plate, one side edge of the rotating plate is rotatably connected with the lifting bottom plate, the other opposite side edge of the rotating plate is a driving inclined plane inclined outwards from top to bottom, a transversely arranged telescopic stop lever is arranged above the supporting body corresponding to the driving inclined plane, the telescopic stop lever comprises a fixed sleeve and a telescopic rod inserted in the fixed sleeve, a telescopic pressure spring for pressing the telescopic rod is arranged in the fixed sleeve, the end surface of the telescopic rod is an avoiding inclined plane inclined forwards from bottom to top, when the lower die ascends, the driving inclined plane pushes the avoiding inclined plane, and the telescopic rod retracts into the; when the lower die is lifted in place, the telescopic rod extends forwards, and the end part of the telescopic rod is positioned below the rotating plate.

7. The processing equipment for the hanging hole of the outer package of the product as claimed in claim 1, wherein the positioning structure comprises two positioning cylinders which are oppositely positioned at the left side and the right side of the conveying line, a piston rod of each positioning cylinder is connected with a positioning push block, half concave cavities which are matched with the outer shape of the outer package of the product are respectively arranged at the opposite sides of the two positioning push blocks, when the two positioning cylinders act to drive the left positioning push block and the right positioning push block to move relatively to be in butt joint, the positioning structure is in a closed state, and the left half concave cavities and the right half concave cavities are spliced to form the positioning concave cavities which are matched with the.

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