CN210763332U - Printing machine capable of efficiently and stably feeding - Google Patents

Abstract

The utility model discloses a printing machine capable of efficiently and stably feeding, which belongs to the technical field of printing equipment and comprises a printing machine body, wherein one side of the printing machine body, which is close to a feeding port, is fixedly connected with a base, the top of the base is fixedly connected with a supporting plate, one end of the supporting plate is provided with a supporting cambered surface, one end of the supporting plate is rotatably connected with a conveying shaft, the top surface of the supporting plate is provided with a main conveying groove, and a main crawler belt is jointly sleeved on the supporting plate and the conveying shaft; a separating driving roller is rotatably connected above the supporting plate, a separating driven roller is rotatably connected above the supporting plate, a separating crawler belt is sleeved on the separating driving roller and the separating driven roller together, and the lower surface of the separating crawler belt is arranged along the length direction of the supporting plate; a protective shell is fixedly connected above the supporting plate; a plurality of separation holes have been seted up on the separation track, protective housing top fixedly connected with separation air exhauster, the utility model discloses have the high-efficient stable paper separation of taking together around and carry the effect of printing machine body.

Description

Printing machine capable of efficiently and stably feeding

Technical Field

The utility model belongs to the technical field of lithography apparatus's technique and specifically relates to a printing machine that can high-efficient stable material loading is related to.

Background

At present, a printing machine is common printing equipment which is required by most printing factories and is used for printing paper materials with different sizes, in the using process of the printing machine, firstly, piled paper needs to be spread by a feeding mechanism, the paper needs to be arranged into a mutually partially overlapped state, and the paper is conveyed to a feeding port of the printing machine through a conveying belt, so that the feeding of the printing machine is realized.

In the prior art, reference can be made to a Chinese patent with an authorization publication number of CN208881342U, and an energy-saving split printing machine is disclosed, which relates to the field of printing. This energy-saving run-flat printing machine, including the printing machine body, the bottom of printing machine body is provided with the transport plate, the well side fixed mounting of transport plate inner chamber has the fixed block, the equal fixedly connected with extension spring in both ends of fixed block, and two extension spring's one end fixed mounting respectively have fixed establishment, fixed establishment includes the baffle, the bottom welding of baffle has the connecting rod, the bottom fixed mounting of connecting rod has the slider, the slide bar has all been welded to the left and right sides of fixed block, and the one end of two slide bars respectively with one side fixed mounting of transport plate inner chamber.

The above prior art solutions have the following drawbacks: the existing common paper separation method of blowing from one side is poor in stability, the probability of blowing the paper cannot be guaranteed, and the condition that the paper is blown askew when wind power is high is difficult to avoid.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can high-efficient printing machine of stabilizing material loading can realize the high-efficient stable paper separation of putting together around and carry the effect of printing machine body.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a printing machine capable of efficiently and stably feeding materials comprises a printing machine body, wherein a feeding hole is formed in one side of the printing machine body, a base is fixedly connected to one side, close to the feeding hole, of the printing machine body, a supporting plate is fixedly connected to the top of the base, a feeding mechanism capable of stacking and pushing paper to the upper side of the base is connected to one end, far away from the printing machine body, of the supporting plate, a supporting arc surface with the circle center located inside the supporting plate is formed in one end of the supporting plate, the end, far away from the supporting arc surface, of the supporting plate is rotatably connected with a conveying shaft, a conveying motor is fixedly connected to the supporting plate, and the conveying; the top surface of the supporting plate is provided with a main conveying groove arranged along the length direction of the supporting plate, and the position of the supporting plate close to the main conveying groove and the conveying shaft are jointly sleeved with a main crawler belt arranged along the length direction of the main conveying groove; a separation driving roller is rotatably connected to the position, corresponding to the upper part of the main track, of the supporting plate, a separation driven roller is rotatably connected to the position, close to the separation driving roller, of the supporting plate, the separation driving roller and the separation driven roller are jointly sleeved with a separation track, and the lower surface of the separation track is arranged along the length direction of the supporting plate; a protective shell which is semi-surrounded on the separation driving roller and the separation driven roller is fixedly connected to the position, corresponding to the upper part of the separation crawler, of the supporting plate; a plurality of separation holes are formed in the separation track, and a separation exhaust fan capable of pumping air upwards is fixedly connected to the top of the protective shell.

Through adopting above-mentioned scheme, feed mechanism can make the state of taking a back top into the preceding paper arrangement, and propelling movement to the backup pad, at this moment, the paper can be along with main track to the feed inlet conveying, current paper conveys the position department of separation track below, the ascending air flow that the separation air exhauster arouses can upwards attract the paper, utilize the separation track rotational speed to be higher than main track rotational speed, can be with the faster transport of preceding paper, after the separation track, the paper falls on main track again, preceding paper just can pull open the certain distance with following paper this moment, so as to analogize, just can realize the effect that the sheet of paper got into the feed inlet.

The utility model discloses further set up to: the backup pad is cavity setting, the backup pad top surface is close to the position department in main transfer tank has seted up a plurality of intercommunications the ventilation hole in the inside and outside space of backup pad, a plurality of through-holes have been seted up on the main track, backup pad one side fixedly connected with main air exhauster.

Through adopting above-mentioned scheme, fall on main track back at the paper, main updraft ventilator drives the air current and passes the ventilation hole from the through-hole and flow downwards, adsorbs paper and slides on main conveyer belt, and the mode is under the paper passes through the separation track, because the wind-force of separation air exhauster is great, just can break away from main track with the paper, and the paper homoenergetic can move with main track with fast in other times, can effectively ensure the speed of paper conveying, improve equipment printing's stability.

The utility model discloses further set up to: the supporting plate top surface corresponds the position department fixedly connected with a plurality of edges of separation track below the lug that the backup pad width direction array set up, the lug all is located the backup pad corresponds the position department of main track both sides, the lug top surface all seted up by the lug top surface is close to the inclined plane that feed mechanism's direction downward sloping set up.

Through adopting above-mentioned scheme, when the paper slides to the lug position, the paper edge can lift up along with the lug, makes paper and main track separate to it is closer to leave separation track distance, thereby improves the stability that the separation track adsorbs the paper.

The utility model discloses further set up to: every two equal fixedly connected with is on a parallel with between the lug the sunshade that backup pad upper surface set up, the sunshade can cover its below the ventilation hole.

Through adopting above-mentioned scheme, at the in-process that the paper passes through the lug, the sunshade can block the suction to the paper that comes from the below to further ensure that the paper can be stable adsorbed on the separation track, reduced the paper and received the suction of top and below simultaneously and lead to buckling deformation.

The utility model discloses further set up to: the supporting plate is provided with auxiliary conveying grooves which are parallel to the main conveying grooves and correspond to the positions of the two sides of the main conveying grooves, and the positions, close to the auxiliary conveying grooves, of the supporting plate are sleeved with auxiliary tracks together with the outer sides of the conveying shafts.

Through adopting above-mentioned scheme, when printing great paper, can drag paper both sides through supplementary conveyer belt, prevent that paper both sides frictional force is great and lead to the paper to take place to incline when the paper only slides along with main track.

The utility model discloses further set up to: the protective housing bottom is close to the one end of printing machine body is rotated and is connected with a plurality of axis edges the leading wheel that backup pad width direction set up, the leading wheel homoenergetic with the backup pad butt.

Through adopting above-mentioned scheme, the leading wheel is because with the backup pad butt, after the paper passes through the separation track, the leading wheel can assist the paper to draw close to main track direction and fall on main track again to the guarantee paper continues to advance along with main track smoothly.

The utility model discloses further set up to: the guide wheel is made of elastic materials.

Through adopting above-mentioned scheme, elastic material can reduce the damage degree of leading wheel to the paper to reduce because the leading wheel and lead to the probability that the condition that paper bending deformation is difficult to print takes place, the smooth of guarantee printing process goes on.

The utility model discloses further set up to: the printing machine body is close to fixedly connected with polylith overhead gage in the position department of feed inlet top, every the overhead gage by be close to the one end of printing machine body is to keeping away from the direction tilt up setting of printing machine body, the overhead gage with be formed with the paper space that supplies paper to pass through between the backup pad.

Through adopting above-mentioned scheme, go up the baffle and can ensure that the paper can follow the feed inlet and get into when the paper is about to get into the feed inlet, reduce the probability that the condition of paper perk takes place when getting into the feed inlet to guarantee the stability of equipment operation.

The utility model discloses further set up to: the supporting plate is rotatably connected with an auxiliary wheel at a position corresponding to the upper part of the auxiliary track, and the auxiliary wheel can be abutted to the surface of the auxiliary track.

Through adopting above-mentioned scheme, at the in-process of supplementary track conveying paper, the auxiliary wheel can rotate along with supplementary track, presses the paper in the auxiliary wheel below, plays the effect that prevents the paper perk, and the guarantee paper both sides are hugged closely in the backup pad.

The utility model discloses further set up to: the supporting plate top fixedly connected with edge the crossbeam that the backup pad width direction set up, sliding connection has supplementary slider on the crossbeam, supplementary wheel rotate connect in supplementary slider is close to the one end of backup pad, supplementary slider is kept away from the one end threaded connection of backup pad has the perpendicular to the planar fixing bolt in backup pad place.

Through adopting above-mentioned scheme, when adapting to the not paper of equidimension, the auxiliary wheel slides on the crossbeam through the supplementary slider of accessible, to less paper, can slide the auxiliary wheel to main track top and carry on spacingly to the paper, when needs fixed auxiliary wheel position, screws up the bolt and just can fix the position of auxiliary wheel.

To sum up, the utility model discloses following beneficial effect has:

1. the paper separating device can efficiently separate two stacked front and back papers to meet the requirement of single-sheet paper feeding of a printing machine;

2. the moving speed and the moving position of the paper can be effectively guaranteed, and the probability of the end part and the side surface of the paper tilting is reduced;

3. the stability of equipment operation can be effectively ensured, the paper quality when guaranteeing the printing.

Drawings

FIG. 1 is an overall schematic view of the present embodiment;

FIG. 2 is a partial cross-sectional view of the embodiment highlighting the primary track structure;

FIG. 3 is a partial cross-sectional view of a projected split track configuration of an embodiment;

FIG. 4 is a partial schematic view of a protruding shutter structure according to an embodiment;

FIG. 5 is a partial sectional view of a projecting beam structure of the embodiment;

fig. 6 is an enlarged view of a portion a in fig. 5.

In the figure, 1, a printer body; 11. a feed inlet; 12. an upper baffle plate; 121. paper voids; 13. a feeding mechanism; 2. A base; 21. a support plate; 211. supporting the arc surface; 22. a transfer shaft; 221. a transfer motor; 222. a main transfer slot; 223. A main track; 2231. a through hole; 224. an auxiliary transfer slot; 225. an auxiliary track; 23. a vent hole; 231. a main exhaust fan; 3. separating the drive roll; 31. separating the driven roller; 32. separating the caterpillar band; 321. a separation well; 33. a protective shell; 331. a guide wheel; 34. separating the motor; 35. a separation exhaust fan; 36. a bump; 361. a bevel; 37. a shutter; 4. an auxiliary wheel; 41. A cross beam; 42. an auxiliary slide block; 43. and (5) fixing the bolt.

Detailed Description

Example (b): the utility model provides a can high-efficient stable printing machine of material loading, as shown in fig. 1 and fig. 2, including printing machine body 1, feed inlet 11 has been seted up to printing machine body 1 one side, one side fixedly connected with base 2 that printing machine body 1 is close to feed inlet 11, base 2 top fixedly connected with is used for transmitting the backup pad 21 of paper by the one end that is close to printing machine body 1 to the direction tilt up setting of keeping away from printing machine body 1, the one end fixedly connected with that printing machine body 1 was kept away from to base 2 can stack the paper and propelling movement to the feed mechanism 13 of base 2 top. When the automatic paper feeding device is used, the feeding mechanism 13 arranges the piled paper into a front-back stacked state and transmits the paper to the supporting plate 21, and the supporting plate 21 can convey the paper to the feeding port 11 of the printing machine body 1 for printing.

As shown in fig. 1 and fig. 2, one end of the supporting plate 21 away from the printing machine body 1 is provided with a supporting arc surface 211 with a circle center located inside the supporting plate 21. One end of the support plate 21 near the printer body 1 is rotatably connected with a conveying shaft 22 arranged along the width direction of the support plate 21. A transmission motor 221 is fixedly connected to the supporting plate 21 at a position corresponding to one end of the transmission shaft 22, and the transmission shaft 22 is fixedly connected to an output shaft of the transmission motor 221. The top surface of the support plate 21 is provided with a main conveying groove 222 arranged along the length direction of the support plate, and the position of the support plate 21 close to the main conveying groove 222 and the conveying shaft 22 are sleeved with a main crawler 223 arranged along the length direction of the main conveying groove 222. The supporting plate 21 is hollow, and a plurality of ventilation holes 23 communicating the inner space and the outer space of the supporting plate 21 are formed at the position of the top surface of the supporting plate 21 close to the main conveying groove 222. A plurality of through holes 2231 are formed on the main track 223, and a main exhaust fan 231 is fixedly connected to one side of the support plate 21. When the paper falls on main track 223, start main air exhauster 231, main air exhauster 231 can extract the inside air of backup pad 21 to form the air flow from top to bottom in main track 223 department, adsorb the paper on main track 223, advance at the uniform velocity along with main track 223.

As shown in fig. 2 and 3, a separate drive roller 3 provided in the width direction of the support plate 21 is rotatably connected to the support plate 21 at a position corresponding to the upper side of the main track 223. A separation driven roller 31 disposed in parallel to the separation drive roller 3 is rotatably connected to the support plate 21 on the side away from the printer body 1 corresponding to the separation drive roller 3. A separation caterpillar 32 is sleeved on the separation driving roller 3 and the separation driven roller 31 together, and the lower surface of the separation caterpillar 32 is parallel to the supporting plate 21. The release crawler 32 is provided with a plurality of release holes 321. A protective shell 33 semi-surrounding the separation driving roller 3 and the separation driven roller 31 is fixedly connected to a position of the support plate 21 above the separation caterpillar band 32, and the separation driving roller 3 and the separation driven roller 31 are rotatably connected to the inside of the protective shell 33. The separation exhaust fan 35 that can upwards extract the air is fixedly connected with in the top of protective housing 33, and protective housing 33 corresponds the position department of separation drive roll 3 one end, and fixedly connected with separation motor 34, the one end fixed connection of separation drive roll 3 is on the output shaft of separation motor 34. When the paper passes through the position below the separation crawler 32, because the wind power of the separation exhaust fan 35 is greater than that of the main exhaust fan 231, the paper can be adsorbed on the surface of the separation crawler 32 by the on-line air flow caused by the separation exhaust fan 35, and the rotating speed of the separation crawler 32 is faster than that of the main crawler 223 under the driving of the separation motor 34, so that the paper adsorbed on the separation crawler 32 moves forward at an accelerated speed, and a distance is drawn between the front and rear papers.

As shown in fig. 3 and 4, one end of the bottom of the protective shell 33 close to the printer body 1 is rotatably connected with a plurality of guide wheels 331 having central axes arranged along the width direction of the support plate 21, and the guide wheels 331 can be abutted to the support plate 21. The guide wheel 331 is made of a material having elasticity such as rubber. Since the guide wheel 331 is in contact with the support plate 21, the guide wheel 331 can re-press the sheet against the support plate 21 after the sheet passes through the separation caterpillar 32, and the guide wheel 331 can enlarge the distance between the front and rear sheets when the two sheets reach their positions. The guide wheel 331 has elasticity, which can effectively reduce the damage of the guide wheel 331 to the paper.

As shown in fig. 5, a plurality of protrusions 36 are fixedly connected to the top surface of the support plate 21 at positions corresponding to the lower portions of the separated tracks, the protrusions 36 are respectively located at positions corresponding to both sides of the main track 223 of the support plate 21, and inclined surfaces 361 inclined downward from the top surfaces of the protrusions 36 toward the direction close to the feeding mechanism 13 are respectively formed on the top surfaces of the protrusions 36. Between the two bumps 36, a shielding plate 37 is fixedly connected and arranged parallel to the upper surface of the support plate 21, and the shielding plate 37 can cover the vent holes 23 below the shielding plate 37. When the paper is transferred to the position of the projection 36, it is tilted along the inclined surface 361 of the projection 36, and at this time, the shield 37 blocks the downward suction force at the position of the main caterpillar 223, and the paper is only subjected to the upward suction force, so that the paper can be more easily sucked to the separation caterpillar 32.

As shown in fig. 5 and 6, auxiliary conveying grooves 224 arranged in parallel with the main conveying grooves 222 are formed in positions of the support plate 21 corresponding to both sides of the main conveying grooves 222, and auxiliary crawler belts 225 are sleeved on positions of the support plate 21 close to the auxiliary conveying grooves 224 and the outer side of the conveying shaft 22. When printing large paper, the auxiliary conveyor belt can drag the two sides of the paper, so as to prevent the paper from inclining when the paper slides along the main crawler 223 due to the large friction force of the two sides of the paper.

As shown in fig. 5 and 6, the support plate 21 is rotatably connected with the auxiliary wheel 4 at a position corresponding to the upper side of the auxiliary track 225, and the auxiliary wheel 4 can abut on the surface of the auxiliary track 225. The top of the supporting plate 21 is fixedly connected with a cross beam 41 arranged along the width direction of the supporting plate 21, and the cross beam 41 is connected with an auxiliary sliding block 42 in a sliding manner. The auxiliary wheel 4 is rotatably connected to one end of the auxiliary sliding block 42 close to the support plate 21, and one end of the auxiliary sliding block 42 far from the support plate 21 is in threaded connection with a fixing bolt 43 perpendicular to the plane of the support plate 21. In the process of auxiliary track 225 conveying paper, auxiliary wheel 4 can rotate along with auxiliary track 225, presses the paper in auxiliary wheel 4 below, plays the effect that prevents the paper perk, and the guarantee paper both sides are hugged closely on backup pad 21. When adapting to the paper of different sizes, accessible auxiliary slider 42 slides auxiliary wheel 4 on crossbeam 41, and to less paper, can slide auxiliary wheel 4 to main track 223 top and carry on spacingly to the paper, when needing fixed auxiliary wheel 4 position, screw up the bolt and just can fix auxiliary wheel 4's position.

As shown in fig. 5, a plurality of upper baffles 12 are fixedly connected to the upper portion of the printing machine body 1 near the feed opening 11, each upper baffle 12 is disposed by inclining upward from one end near the printing machine body 1 to a direction away from the printing machine body 1, and a paper gap 121 for paper to pass through is formed between the upper baffle 12 and the supporting plate 21. The upper baffle 12 can ensure that paper can enter from the feed opening 11 when the paper is about to enter the feed opening 11, and the probability of the situation that the paper tilts when entering the feed opening 11 is reduced, so that the running stability of equipment is ensured.

In use, when feeding the printing machine, the feeding mechanism 13 arranges the paper into a state that the previous paper is placed on the next paper, and the paper is conveyed to the upper part of the main crawler belt 223, at the moment, the main crawler belt 223 can adsorb and drive the paper to slide towards the printing machine body 1, when the paper is positioned at the position below the separation crawler belt 32, the separation crawler belt 32 can adsorb the paper on the surface of the paper, and drive the paper to move forwards more quickly, a certain distance is pulled between the two sheets of paper, after the paper passes through the separation crawler belt 32, the paper can be repressed on the main crawler belt 223 by the guide wheel 331, and continuously slides, and when the paper is positioned close to the feed port 11, the paper can be pressed on the auxiliary crawler belt 225 by the auxiliary wheel 4, and the paper is further ensured to smoothly enter.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides a printing machine that can high-efficient stable material loading, includes printing machine body (1), feed inlet (11) have been seted up to printing machine body (1) one side, printing machine body (1) is close to one side fixedly connected with base (2) of feed inlet (11), its characterized in that: the printing machine comprises a base (2), a supporting plate (21) is fixedly connected to the top of the base (2), one end, far away from the printing machine body (1), of the supporting plate (21) is connected with a feeding mechanism (13) capable of stacking and pushing paper to the position above the base (2), a supporting arc surface (211) with the circle center located inside the supporting plate (21) is arranged at one end of the supporting plate (21), one end, far away from the supporting arc surface (211), of the supporting plate (21) is rotatably connected with a conveying shaft (22), a conveying motor (221) is fixedly connected to the supporting plate (21), and the conveying shaft (22) is fixedly connected to an output shaft of the conveying motor (221);

a main conveying groove (222) arranged along the length direction of the supporting plate (21) is formed in the top surface of the supporting plate (21), and a main crawler belt (223) arranged along the length direction of the main conveying groove (222) is sleeved on the supporting plate (21) and the conveying shaft (22) at the position close to the main conveying groove (222);

a separation driving roller (3) is rotatably connected to the position, corresponding to the upper part of the main crawler belt (223), of the supporting plate (21), a separation driven roller (31) is rotatably connected to the position, close to the separation driving roller (3), of the supporting plate (21), the separation driving roller (3) and the separation driven roller (31) are jointly sleeved with a separation crawler belt (32), and the lower surface of the separation crawler belt (32) is arranged along the length direction of the supporting plate (21);

a protective shell (33) which is semi-enclosed in the separation driving roller (3) and the separation driven roller (31) is fixedly connected to the position, corresponding to the upper part of the separation crawler (32), of the supporting plate (21);

a plurality of separation holes (321) are formed in the separation crawler belt (32), and a separation exhaust fan (35) capable of pumping air upwards is fixedly connected to the top of the protective shell (33).

2. A printing press capable of efficient and stable feeding according to claim 1, wherein: backup pad (21) are the cavity setting, backup pad (21) top surface is close to the position department of main conveyer trough (222) has seted up a plurality of intercommunications ventilation hole (23) of the interior outer space of backup pad (21), a plurality of through-holes (2231) have been seted up on main track (223), backup pad (21) one side fixedly connected with owner air exhauster (231).

3. A printing press capable of efficient and stable feeding according to claim 2, wherein: the utility model discloses a separation track (32) and a plurality of lugs (36) that the backup pad (21) top surface corresponds position department fixedly connected with below separation track (32) is a plurality of edges backup pad (21) width direction array sets up, lug (36) all are located backup pad (21) correspond the position department of main track (223) both sides, lug (36) top surface is all seted up by lug (36) top surface is to being close to inclined plane (361) that the direction downward sloping of feed mechanism (13) set up.

4. A printing press capable of efficient and stable feeding according to claim 3, wherein: every two all fixedly connected with between lug (36) is on a parallel with sunshade board (37) that backup pad (21) upper surface set up, sunshade board (37) can cover its below ventilation hole (23).

5. A printing press capable of efficient and stable feeding according to claim 1, wherein: auxiliary conveying grooves (224) parallel to the main conveying grooves (222) are formed in positions, corresponding to the two sides of the main conveying grooves (222), of the supporting plate (21), and auxiliary tracks (225) are sleeved on positions, close to the auxiliary conveying grooves (224), of the supporting plate (21) and the outer side of the conveying shaft (22) together.

6. A printing press capable of efficient and stable feeding according to claim 1, wherein: protective housing (33) bottom is close to the one end of printing machine body (1) is rotated and is connected with a plurality of axis and follows leading wheel (331) that backup pad (21) width direction set up, leading wheel (331) homoenergetic with backup pad (21) butt.

7. A printing press capable of efficient and stable feeding according to claim 6, wherein: the guide wheel (331) is made of a material having elasticity.

8. A printing press capable of efficient and stable feeding according to claim 1, wherein: the printing machine body (1) is close to fixedly connected with polylith overhead gage (12) is located to the position department of feed inlet (11) top, every overhead gage (12) are by being close to the one end of printing machine body (1) is to keeping away from the direction tilt up setting of printing machine body (1), overhead gage (12) with be formed with between backup pad (21) and supply paper space (121) that pass through.

9. A printing press capable of efficient and stable feeding according to claim 5, wherein: an auxiliary wheel (4) is rotatably connected to the support plate (21) at a position corresponding to the upper part of the auxiliary track (225), and the auxiliary wheel (4) can be abutted to the surface of the auxiliary track (225).

10. A printing press capable of efficient and stable feeding according to claim 9, wherein: backup pad (21) top fixedly connected with is followed crossbeam (41) that backup pad (21) width direction set up, sliding connection has supplementary slider (42) on crossbeam (41), auxiliary wheel (4) rotate connect in supplementary slider (42) are close to the one end of backup pad (21), supplementary slider (42) are kept away from the one end threaded connection of backup pad (21) has the perpendicular to planar fixing bolt (43) in backup pad (21) place.

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