CN216914091U - Waste edge recovery device for paperboard printing slotting machine - Google Patents

Abstract

The utility model relates to a cardboard printing fluting machine slitter edge recovery unit relates to the field of carton production technique, and it is including setting up the case that gathers materials in conveying frame bottom, and the opening of case that gathers materials is towards the discharge gate of fluting unit, and the incasement that gathers materials slides and is provided with the scraper blade, and the week side of scraper blade is laminated with the interior week wall of case that gathers materials, is provided with drive assembly in the case that gathers materials, and drive assembly is suitable for the drive scraper blade and carries out reciprocating motion along the length direction of case that gathers materials. This application has the staff of being convenient for and collects the effect of handling to the slitter edge behind the cardboard fluting.

Description

Waste edge recovery device for paperboard printing slotting machine

Technical Field

The utility model belongs to the technical field of carton production and specifically relates to a cardboard printing is slitter edge recovery unit for slotting machine is related to.

Background

The paperboard printing and grooving machine is comprehensive carton processing equipment, processes of printing, grooving, pressing lines and the like are carried out on a paperboard through the paperboard printing and grooving machine, and integrated processing operation of the paperboard is achieved.

Referring to fig. 1, in the related art, a printing and grooving machine for a paperboard includes a paper feeding unit 1, a printing unit 2, a grooving unit 3, and a paper discharging unit 4, wherein the paper feeding unit 1 is adapted to sequentially convey paperboards to be processed into the printing unit 2, and the printing unit 2 is adapted to print the paperboards introduced by the paper feeding unit 1 and guide the printed paperboards into the grooving unit 3; the slotting unit 3 is suitable for slotting the printed paper board and guiding the printed paper board into the paper outlet unit 4; the paper discharging unit 4 comprises a conveying frame 41 positioned at the discharging end of the slotting unit 3 and a plurality of conveying belts 42 arranged on the conveying frame 41 at intervals, and the plurality of conveying belts 42 are all suitable for conveying the slotted paper boards to equipment of the next processing procedure.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: because the easy a large amount of slitter edges that produce of cardboard fluting in-process, when cardboard after a plurality of conveyer belts open the groove conveys, the slitter edge of cutting out on the cardboard drops subaerially to the conveyer belt below in the clearance department between a plurality of conveyer belts under the effect of gravity, long-time cardboard processing operation back, and the staff need close cardboard printing groover and clean the collection to accumulational slitter edge to make staff's use experience not good.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the staff to collect the processing to the slitter edge behind the cardboard fluting, this application provides a cardboard printing is slitter edge recovery unit for fluting machine.

The application provides a pair of slitter edge recovery unit for cardboard printing fluting machine adopts following technical scheme:

the utility model provides a cardboard printing is slitter edge recovery unit for groover, is including setting up the case that gathers materials in conveying frame bottom, the opening of case that gathers materials is towards the discharge gate of fluting unit, it is provided with the scraper blade to slide in the case that gathers materials, the week side of scraper blade with the interior week wall of case that gathers materials is laminated mutually, it is provided with drive assembly in the case that gathers materials, drive assembly is suitable for the drive the scraper blade carries out reciprocating motion along the length direction of the case that gathers materials.

By adopting the technical scheme, when a worker starts the paperboard printing and grooving machine to process the paperboard, the grooving unit performs grooving on the paperboard and transmits the grooved paperboard to the conveying frame, and the waste edges cut from the paperboard drop into the aggregate box at the gaps among the plurality of conveying belts on the conveying frame under the action of gravity; then the staff starts drive assembly, and drive assembly drive scraper blade carries out reciprocating motion along the length direction of the case that gathers materials, and the both ends that push to the case length direction that gathers materials are scraped to the slitter edge in the case that will gather materials to the scraper blade this moment to be convenient for the staff concentrates recovery processing to the slitter edge.

Optionally, the driving assembly includes a driving wheel, a driven wheel, a conveying chain and a driver, the driving wheel and the driven wheel are arranged on the material collecting box at intervals along the length direction of the material collecting box and are both rotatably mounted on one side of the width direction of the material collecting box, the conveying chain is wound on the driving wheel and the driven wheel, the driver is fixedly mounted on the material collecting box, and the output end of the driver is fixedly connected with one side of the driving wheel; the material collecting box is characterized in that a through groove is formed in one side, close to the conveying chain, of the material collecting box, the length of the through groove is consistent with the sliding direction of the scraper, one end of the scraper penetrates out of the through groove and is fixedly connected with the conveying chain, a guide groove is formed in the inner side wall of one side, far away from the conveying chain, of the material collecting box, the length of the guide groove is consistent with the sliding direction of the scraper, and the other end of the scraper is slidably installed in the guide groove.

By adopting the technical scheme, the driver drives the driving wheel to rotate, and at the moment, under the matched use of the driving wheel and the driven wheel, the driving wheel drives the conveying chain to carry out transmission operation, so that the conveying chain drives the scraper to move along the length direction of the material collecting box; the inside wall of this in-process guide way leads stably to the slip of scraper blade to make the scraper blade carry out stable reciprocating motion along the length direction of the case that gathers materials under the drive of conveying chain, thereby make the scraper blade quick with gather materials the both ends that the case was pushed away to the case that gathers materials to accumulational slitter edge, make things convenient for the staff to carry out the concentrated collection of slitter edge and handle.

Optionally, a material guide plate is arranged at the top of the material collecting box, one end of the material guide plate is connected with one side of the material collecting box, which is far away from the slotting unit, and the other end of the material guide plate inclines upwards along the direction of the material collecting box, which is close to the slotting unit.

Through adopting above-mentioned technical scheme, when the fluting unit carries out the fluting operation of cardboard, the slitter edge is at the in-process of surely going out, and the slitter edge is kept away from the one end of fluting unit and is bent downwards under the effect of gravity, and the baffle is separated to the slitter edge of surely going out to the one side of stock guide orientation fluting unit this moment to make the slitter edge along the side water conservancy diversion of stock guide drop in the collecting box, thereby improved the collection performance of collecting box to the slitter edge.

Optionally, one end of the material guide plate, which is far away from the grooving unit, is hinged to the material collecting box, the hinge axis of the material guide plate is consistent with the length direction of the material collecting box, and the material collecting box is provided with an opening and closing assembly which is suitable for driving the material guide plate to rotate.

Through adopting above-mentioned technical scheme, the subassembly drive stock guide that opens and shuts rotates to the staff of being convenient for adjusts the ramp height of stock guide, so that the better stock guide that is applied to the slitter edge of stock guide collects the in-process.

Optionally, the opening and closing assembly comprises an electric push rod and a sliding block, the bottom of the material guide plate is provided with a strip groove along the width direction of the material collecting box, the sliding block is slidably mounted in the strip groove along the length direction of the strip groove, the electric push rod is fixedly arranged on the material collecting box, the output end of the electric push rod is in ball hinge connection with one end of the sliding block, and the electric push rod is suitable for driving the sliding block to be close to or far away from the material collecting box.

By adopting the technical scheme, the electric push rod pushes the sliding block to move up or down, the sliding block slides along the length of the long strip groove in the lifting process, and the lifting sliding block pushes the material guide plate to turn over along the hinge axis, so that the inclination height of the material guide plate is adjusted; when the paperboard printing groover no longer carries out the fluting operation of cardboard, the staff adjusts electric putter to descend through electric putter drive slider, thereby make the stock guide shutoff gather the upper end opening of workbin, the inner chamber of gathering the workbin is in the encapsulated situation this moment, and the slitter edge is difficult for receiving the extrusion of push pedal and is discharged in the workbin from gathering the workbin this moment, thereby has improved the concentrated collection performance of the workbin to the slitter edge that gathers the material.

Optionally, the mounting groove has all been seted up at collection case length direction's both ends, detachable installs the receiving hopper in the mounting groove, the opening has been seted up towards the one end of scraper blade to the receiving hopper, the internal perisporium of receiving hopper and the internal perisporium parallel and level of collection case.

Through adopting above-mentioned technical scheme, when the scraper blade pushed the slitter edge to collection case length direction's both ends, the collecting hopper that is located collection case length direction both ends concentrates the storage respectively to the slitter edge, and the staff can be convenient through taking out the collecting hopper at this moment will collect the interior compression of case and pile up the slitter edge and take out fast, easy operation, convenient.

Optionally, a first chute communicated with the through groove is formed in the receiving hopper, a second chute communicated with the guide groove is formed in the receiving hopper, and the length of the first chute and the length of the second chute are consistent with the sliding direction of the scraper.

Through adopting above-mentioned technical scheme, when driver drive scraper blade carried out reciprocating motion, reciprocating motion's scraper blade still moved and deepened to the receiving hopper to carry out the secondary extrusion compression to pushing away the slitter edge in the receiving hopper through the scraper blade, thereby make accumulational slitter edge extrusion blocking, thereby improved the slitter edge storage capacity of receiving hopper, also be convenient for the staff carries out the centralized processing of slitter edge.

Optionally, the material receiving hopper is provided with a locking part, and the material receiving hopper is detachably mounted on the material collecting box through the locking part.

Through adopting above-mentioned technical scheme, the staff carries out the operation of demolising of receiving hopper on the case that gathers materials fast through the locking part to the staff of being convenient for carries out the slitter edge in the case that gathers materials and takes out recovery work.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the waste edges cut from the paper board are collected by the collecting box, and then the driver drives the scraping plate to push the waste edges in the collecting box to two ends of the collecting box, so that workers can conveniently carry out centralized recovery processing on the waste edges;

2. the electric push rod pushes the material guide plate to rotate, so that the material guide plate guides and drops the waste edges cut by the grooving unit when the material guide plate is in an inclined state, and when the material guide plate is in a state of closing an upper end opening of the material collecting box, a scraper is convenient to scrape and push the waste edges in the material collecting box;

3. scrape when the scraper blade with the slitter edge and push away to when extruding in the one side of collection case length direction, the receiving hopper of collection case one side effectively collects the slitter edge, and the staff is through demolising the receiving hopper in the collection case, can be quick carry out the work of taking out of slitter edge.

Drawings

Fig. 1 is a schematic view of the overall structure of the related art of the present application;

FIG. 2 is a schematic view of the installation location of the slitter edge recovery apparatus and the paperboard print fluting machine;

FIG. 3 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 4 is another perspective view of an embodiment of the present application;

fig. 5 is a schematic structural diagram of a receiving hopper in the embodiment of the present application.

Reference numerals: 1. a paper feeding unit; 2. a printing unit; 3. a slotting unit; 4. a paper discharge unit; 41. a transfer frame; 42. a conveyor belt; 5. a material collecting box; 51. a material guide plate; 511. a long groove; 52. a material receiving hopper; 521. a pull handle; 522. a locking piece; 5221. a hasp; 523. a first chute; 524. a second chute; 53. mounting grooves; 54. penetrating a groove; 55. a guide groove; 6. an opening and closing assembly; 61. an electric push rod; 62. a slider; 7. a squeegee; 71. a plate body; 72. a slide bar; 8. a drive assembly; 81. a driving wheel; 82. a driven wheel; 83. a conveyor chain; 84. a driver.

Detailed Description

The present application is described in further detail below with reference to figures 2-5.

The embodiment of the application discloses cardboard printing fluting machine slitter edge recovery unit. Referring to fig. 2 and 3, the slitter edge recycling device for the paperboard printing slotting machine comprises a material collecting box 5 arranged at the bottom of a conveying frame 41, wherein the material collecting box 5 is rectangular, the length distribution direction of the material collecting box 5 is perpendicular to the conveying direction of a conveying belt 42, the upper end opening of the material collecting box 5 faces to a discharge hole of a slotting unit 3, a material guide plate 51 is arranged at the top of the material collecting box 5 in an openable and closable manner, and an opening and closing assembly 6 for driving the material guide plate 51 to open and close is arranged on the material collecting box 5; a scraping plate 7 is arranged in the material collecting box 5 in a sliding mode, the length direction of the scraping plate 7 is consistent with the width direction of the material collecting box 5, the peripheral side of the scraping plate 7 is attached to the inner peripheral wall of the material collecting box 5, and the upper end face of the scraping plate 7 is flush with the upper end face of the material collecting box 5; a driving assembly 8 is arranged in the material collecting box 5, and the driving assembly 8 is suitable for driving the scraping plate 7 to reciprocate along the length direction of the material collecting box 5; the two ends of the material collecting box 5 in the length direction of the material collecting box 5 are respectively provided with a material collecting hopper 52 in an embedded mode, and the material collecting hoppers 52 are suitable for collecting and storing waste edges scraped to one end of the material collecting box 5 by the scraping plate 7.

Referring to fig. 3 and 4, the opening and closing assembly 6 comprises two electric push rods 61 and two slide blocks 62, wherein the two electric push rods 61 are vertically arranged on two inner side walls of the material collecting box 5 in the length direction one by one; the material guide plate 51 is a rectangular plate, one end of the material guide plate 51 is hinged to one side, far away from the grooving unit 3, of the material collecting box 5 through a hinge, the hinge axis is consistent with the length direction of the material collecting box 5, the bottom surface of the material guide plate 51 is provided with two strip grooves 511 at intervals along the length direction of the material collecting box 5, and the length opening directions of the two strip grooves 511 are both vertical to the length direction of the material collecting box 5; two sliding blocks 62 are arranged, the two sliding blocks 62 correspond to the two long grooves 511 one by one, the two sliding blocks 62 are respectively installed in the corresponding long grooves 511 in a sliding mode, and the sliding direction is consistent with the length opening direction of the long grooves 511; the two sliding blocks 62 correspond to the two electric push rods 61 one by one, and the bottoms of the two sliding blocks 62 are respectively hinged with the output ends of the corresponding electric push rods 61 in a spherical manner; when the slotting device is used, a worker starts the electric push rod 61, the electric push rod 61 drives the slide block 62 to move upwards, so that the slide block 62 slides in the strip groove 511, then the vertically-ascending slide block 62 pushes the material guide plate 51, the material guide plate 51 rotates by taking a hinged axis at one end of the material guide plate 51 as a rotating axis, so that one end of the material guide plate 51 facing the slotting unit 3 inclines upwards along the direction of the material collecting box 5 facing the slotting unit 3, then the worker controls the output end of the electric push rod 61 to be kept in a stretching state, and waste edges cut by the slotting unit 3 are guided into the material collecting box 5 along the bottom surface of the material guide plate 51 under the barrier of the material guide plate 51; when the grooving unit 3 does not perform the paper board grooving operation any more, the operator controls the electric push rod 61 to perform the contraction motion of the output end, and at the moment, the electric push rod 61 pulls the material guide plate 51 to rotate through the sliding block 62, so that the lower end surface of the material guide plate 51 is attached to the upper end surface of the material collecting box 5, and the closing operation of the upper end opening of the material collecting box 5 is realized.

Referring to fig. 3, 4 and 5, in order to facilitate the staff to rapidly collect and process the waste edges collected in the material collecting box 5, mounting grooves 53 are respectively formed at two ends of the material collecting box 5 in the length direction, the openings of the two mounting grooves 53 face to one side far away from the slotting unit 3, the two material receiving hoppers 52 are respectively embedded and mounted in the two mounting grooves 53, and the two material receiving hoppers 52 are respectively positioned between the two electric push rods 61; one side of the receiving hopper 52 facing the scraper 7 is open, the upper end surfaces of the receiving hopper 52 are both open, the upper end surfaces of the receiving hopper 52 are flush with the upper end surface of the collecting box 5, two opposite inner side walls of the receiving hopper 52 are flush with two inner side walls of the collecting box 5 in the width direction one by one, and the inner bottom wall of the receiving hopper 52 is flush with the inner bottom wall of the collecting box 5; one side of the receiving hopper 52, which is far away from the slotted unit 3, is flush with the outer side wall of the collecting box 5, a drawing handle 521 is welded to one side of the receiving hopper 52, which is far away from the slotted unit 3, four locking pieces 522 are installed on the receiving hopper 52 around the drawing handle 521 in a matrix shape, the locking pieces 522 may be structural members such as buckles 5221 and pins, preferably buckles 5221 in the embodiment, a fixing part of the buckles 5221 is installed on the outer peripheral side of the collecting box 5, an engaging part of the buckles 5221 is installed on the outer peripheral side of the receiving hopper 52, and the receiving hopper 52 is detachably locked on the collecting box 5 through the buckles 5221.

Referring to fig. 3 and 5, the driving assembly 8 includes a driving wheel 81, a driven wheel 82, a transmission chain 83 and a driver 84, the driving wheel 81 and the driven wheel 82 are arranged on the outer side wall of one side of the material collecting box 5 close to the slotting unit 3 at intervals along the length direction of the material collecting box 5, the driving wheel 81 and the driven wheel 82 are both rotatably mounted on the material collecting box 5, the rotation axes are both perpendicular to the length direction of the material collecting box 5, and the transmission chain 83 is wound on the driving wheel 81 and the driven wheel 82; the driver 84 is a servo motor, the driver 84 is installed on the outer side wall of the material collecting box 5 through a support frame, and the output end of the driver 84 is coaxially welded with the driving wheel 81; a through groove 54 is formed in one side, close to the conveying chain 83, of the material collecting box 5, the length direction of the through groove 54 is consistent with the length direction of the material collecting box 5, a guide groove 55 is formed in the inner side wall of one side, far away from the conveying chain 83, of the material collecting box 5, and the length direction of the guide groove 55 is consistent with the length direction of the material collecting box 5; the scraper 7 comprises a plate body 71 and sliding rods 72 welded at two ends of the plate body 71 in the length direction, the peripheral side of the plate body 71 is attached to the inner peripheral wall of the material collecting box 5, the sliding rods 72 positioned at one side close to the conveying chain 83 penetrate through the through grooves 54 and are bonded with the upper end face of the conveying chain 83, the sliding rods 72 positioned at one side far away from the conveying chain 83 are slidably installed in the guide grooves 55, and the sliding direction is consistent with the length opening direction of the guide grooves 55; a first sliding chute 523 communicated with the through groove 54 is formed in the receiving hopper 52, a second sliding chute 524 communicated with the guide groove 55 is formed in the receiving hopper 52, the length directions of the first sliding chute 523 and the second sliding chute 524 are consistent with the sliding direction of the collecting box 5, a sliding rod 72 positioned on one side close to the conveying chain 83 slides and extends into the first sliding chute 523, and a sliding rod 72 positioned on one side far away from the conveying chain 83 slides and extends into the second sliding chute 524; when the waste edge collecting device is used, a worker starts the driver 84, so that the driver 84 drives the driving wheel 81 to rotate, the rotating driving wheel 81 drives the transmission chain 83 to transmit under the matching of the driven wheel 82, at the moment, the transmission chain 83 drives the scraper 7 to move along the length direction of the material collecting box 5, and waste edges in the material collecting box 5 are pushed and compressed in the material collecting hoppers 52 at two ends of the material collecting box 5 through the movement of the scraper 7.

The embodiment of the application provides a waste edge recovery device for a paperboard printing slotting machine, and the implementation principle is as follows: when a worker starts a paperboard printing and grooving machine to process the paperboard, the grooving unit 3 performs grooving on the paperboard and transmits the grooved paperboard to the conveying frame 41, and the waste edges cut from the paperboard drop into the material collecting box 5 at the gaps among the plurality of conveying belts 42 on the conveying frame 41 under the action of gravity, so that the waste edges are collected and stored in the material collecting box 5; after the operator finishes the slotting operation of the paper board and shuts down the paper board printing and slotting machine, the operator adjusts the two electric push rods 61, and the output ends of the two electric push rods 61 respectively pull the material guide plate 51 through the slide blocks 62, so that the material guide plate 51 is pulled to perform the closing operation of the opening at the upper end of the material collecting box 5; after the guide plate 51 closes the upper end opening of collection case 5, the staff starts driver 84, driver 84 drive action wheel 81 rotates, action wheel 81 drives conveying chain 83 and transmits under the cooperation from driving wheel 82, thereby drive scraper 7 through conveying chain 83 and slide along the length direction of collection case 5, scraper 7 promotes and extrudees to the collection hopper 52 of collection case 5 one side with the accumulational slitter edge in the collection case 5 this moment, then the staff adjusts driver 84 again, and drive scraper 7 through driver 84 and carry out reverse movement, thereby make scraper 7 and the collection hopper 52 phase separation of one side, the staff demolishs the slitter edge piece of taking out that this collection hopper 52 can be quick and extrude into the piece this moment.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a cardboard printing is slitter edge recovery unit for groover which characterized in that: including setting up case (5) that gathers materials in conveying frame (41) bottom, the opening of case (5) that gathers materials is towards the discharge gate of fluting unit (3), it is provided with scraper blade (7) to slide in case (5) to gather materials, the week side of scraper blade (7) with the interior wall of case (5) that gathers materials is laminated mutually, be provided with drive assembly (8) in case (5) that gathers materials, drive assembly (8) are suitable for the drive the length direction of case (5) is followed to scraper blade (7) and is carried out reciprocating motion.

2. The slitter edge recycling device for a paperboard printing groover according to claim 1, wherein: the driving assembly (8) comprises a driving wheel (81), a driven wheel (82), a conveying chain (83) and a driver (84), the driving wheel (81) and the driven wheel (82) are arranged on the material collecting box (5) at intervals along the length direction of the material collecting box (5), and are rotatably mounted on one side of the width direction of the material collecting box (5), the conveying chain (83) is wound on the driving wheel (81) and the driven wheel (82), the driver (84) is fixedly arranged on the material collecting box (5), and the output end of the driver (84) is fixedly connected with one side of the driving wheel (81);

the material collecting box is characterized in that a penetrating groove (54) is formed in one side, close to a conveying chain (83), of the material collecting box (5), the length of the penetrating groove (54) is consistent with the sliding direction of the scraping plate (7), one end of the scraping plate (7) penetrates through the penetrating groove (54) and is fixedly connected with the conveying chain (83), a guide groove (55) is formed in the inner side wall of one side, far away from the conveying chain (83), of the material collecting box (5), the length of the guide groove (55) is consistent with the sliding direction of the scraping plate (7), and the other end of the scraping plate (7) is slidably installed in the guide groove (55).

3. The slitter edge recycling device for a paperboard printing groover according to claim 1, wherein: the top of the material collecting box (5) is provided with a material guide plate (51), one end of the material guide plate (51) is connected with one side, away from the slotting unit (3), of the material collecting box (5), and the other end of the material guide plate (51) inclines upwards towards the slotting unit (3) along the material collecting box (5).

4. The slitter edge recycling device for a paperboard printing groover according to claim 3, wherein: one end, far away from the grooving unit (3), of the material guide plate (51) is hinged to the material collecting box (5), the hinged axis of the material guide plate is consistent with the length direction of the material collecting box (5), an opening and closing assembly (6) is arranged on the material collecting box (5), and the opening and closing assembly (6) is suitable for driving the material guide plate (51) to rotate.

5. The slitter edge recycling device for a paperboard printing groover according to claim 4, wherein: the utility model discloses a material collection box, including opening and shutting subassembly (6), electric putter (61) and slider (62), rectangular groove (511) have been seted up along the width direction of collection box (5) to the bottom of stock guide (51), slider (62) are followed direction slidable mounting is seted up in rectangular groove (511) to the length of rectangular groove (511), electric putter (61) set firmly in collection box (5) is last, electric putter's (61) output with the one end ball joint of slider (62), electric putter (61) are suitable for the drive slider (62) are close to or keep away from collection box (5).

6. The slitter edge recycling device for a paperboard printing groover according to claim 2, wherein: mounting groove (53) have all been seted up at collection case (5) length direction's both ends, be equipped with receiving hopper (52) in mounting groove (53), the opening has been seted up towards the one end of scraper blade (7) in receiving hopper (52), the internal perisporium of receiving hopper (52) and the internal perisporium parallel and level of collection case (5).

7. The slitter edge recycling device for a paperboard printing groover according to claim 6, wherein: the material receiving hopper (52) is provided with a first sliding groove (523) communicated with the through groove (54), the material receiving hopper (52) is provided with a second sliding groove (524) communicated with the guide groove (55), the length opening directions of the first sliding groove (523) and the second sliding groove (524) are consistent with the sliding direction of the scraper (7), and the scraper (7) slides along the first sliding groove (523) and extends into the material receiving hopper (52).

8. The slitter edge recycling device for a paperboard printing groover according to claim 7, wherein: the material collecting hopper (52) is provided with a locking piece (522), and the material collecting hopper (52) is detachably arranged on the material collecting box (5) through the locking piece (522).

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