Honeycomb plate edging machine

Abstract

The utility model discloses a honeycomb panel edging machine, which relates to the technical field of honeycomb panel edging, and comprises a bottom plate, the top of the bottom plate is provided with a gluing assembly and a pressing assembly from left to right, and the gluing assembly comprises two position adjusting mechanisms symmetrically connected to the top of the bottom plate. Two fixing plates are symmetrically connected to the two position adjusting mechanisms, and two left-right moving units are symmetrically connected to the tops of the two fixing plates. During use, glue is extruded to the inner wall of the inlaying groove through the arranged glue outlet mechanism, and then the glue can be comprehensively and uniformly smeared on the inner wall of the inlaying groove through the glue smearing mechanism, so that after the covered edge is pressed into the inlaying groove, the covered edge and the inner wall of the inlaying groove can be tightly and reliably connected together through the uniformly and comprehensively distributed glue; the honeycomb plate can be prevented from being separated from the embedded groove after being used for a long time, the service life of the honeycomb plate is prolonged, and the reliability of the honeycomb plate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to honeycomb board inlaying technical field, especially inlaying machine of honeycomb board. BACKGROUND

[0002] Honeycomb board is by two thin panel, firmly bonded in a layer of thick honeycomb core two sides and is made of board, also called honeycomb sandwich structure, wherein aluminum honeycomb board is the most common one of honeycomb board, its completely non-toxic green quality, let furniture business in processing furniture, less unnecessary environmental protection procedure.

[0003] Honeycomb board in the production process, will inlay on the four sides of honeycomb board edge, so can avoid the honeycomb layer in the middle of honeycomb board to improve the strength of honeycomb board, and can cover the honeycomb layer, so that the outer side of honeycomb board is smooth and flat, effectively improve the strength and aesthetic property of honeycomb board.

[0004] The Chinese utility model patent with patent application number CN201721754082.4 records a kind of honeycomb board inlaying machine, it is by the setting of gluing component, gluing component is set on rack, and it is located between milling groove mechanism and inlaying mechanism;Gluing component is equipped with glue gun, glue gun is two groups, the orientation of two groups of glue gun is opposite to the processing surface and is staggered, for respectively to the upper and lower two groove walls of inlaying groove glue spraying, however, the inlaying mechanism in the above-mentioned can only be towards the upper and lower two groove walls of inlaying groove glue spraying, the side wall of inlaying groove cannot be sprayed with glue, leading to the connection strength of edge and inlaying groove is insufficient, so that edge is prone to and honeycomb board easily occurs the problem of separation. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of honeycomb board inlaying machine to solve the problem that the existing honeycomb board inlaying machine in the above background art cannot be sprayed with glue on the inner side wall of inlaying groove comprehensively when inlaying groove is glued, so that the connection strength of edge and inlaying groove is insufficient, so that edge is prone to and honeycomb board easily occurs the problem of separation.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of honeycomb board inlaying machine, including bottom plate, the top of bottom plate is equipped with gluing component and press-fit component from left to right, the gluing component includes two position adjusting mechanisms that are symmetrically connected on the top of bottom plate, two fixed plates are symmetrically connected on the two position adjusting mechanisms, two left and right moving units are symmetrically connected on the top of two fixed plates, two glue outlet mechanisms are symmetrically connected on the two left and right moving units, two glue wiping mechanisms are symmetrically provided on the two left and right moving units;

[0007] The position adjusting mechanism is used to adjust the front and back positions and height of fixed plate;

[0008] The pressing assembly is used for pressing the edge cover into the glue-coated inlay groove.

[0009] Preferably, the glue discharging mechanism comprises two pairs of glue storage cylinders symmetrically connected to the top of the two fixed plates, the outer wall of the glue storage cylinder is communicated with a glue inlet pipe, the outer sides of the two pairs of glue storage cylinders away from each other are symmetrically fixedly connected with glue discharging nozzles, the glue discharging nozzle is provided with a glue discharging opening, the glue discharging opening is communicated with the glue storage cylinder, a plurality of glue discharging holes are formed in the sides of the two pairs of glue storage cylinders close to each other, pistons are movably inserted into the inner side walls of the two pairs of glue storage cylinders, the sides of the two pairs of pistons away from each other are symmetrically fixedly connected with two pairs of push rods, the glue discharging mechanism further comprises two push units symmetrically connected to the two fixed plates, one end of the two pairs of push rods away from each other penetrates the glue storage cylinder and is connected with the two push units respectively, and the push unit drives the two pairs of push rods to move towards each other, so that the glue in the glue storage cylinder is squeezed out through the glue discharging holes and the glue discharging openings to the inner side wall and the upper and lower inner walls of the inlay groove on the side of the honeycomb plate, thereby preparing for the uniform and comprehensive application of the glue on the inner wall of the inlay groove.

[0010] Preferably, the glue discharging mechanism comprises two pairs of glue storage cylinders symmetrically connected to the top of the two fixed plates, the outer wall of the glue storage cylinder is communicated with a glue inlet pipe, the outer sides of the two pairs of glue storage cylinders away from each other are symmetrically fixedly connected with glue discharging nozzles, the glue discharging nozzle is provided with a glue discharging opening, the glue discharging opening is communicated with the glue storage cylinder, a plurality of glue discharging holes are formed in the sides of the two pairs of glue storage cylinders close to each other, pistons are movably inserted into the inner side walls of the two pairs of glue storage cylinders, the sides of the two pairs of pistons away from each other are symmetrically fixedly connected with two pairs of push rods, the glue discharging mechanism further comprises two push units symmetrically connected to the two fixed plates, one end of the two pairs of push rods away from each other penetrates the glue storage cylinder and is connected with the two push units respectively, and the push unit drives the two pairs of push rods to move towards each other, so that the glue in the glue storage cylinder is squeezed out through the glue discharging holes and the glue discharging openings to the inner side wall and the upper and lower inner walls of the inlay groove on the side of the honeycomb plate, thereby preparing for the uniform and comprehensive application of the glue on the inner wall of the inlay groove.

[0011] Preferably, the driving unit comprises a roller, the first rotating shaft penetrates through the fixed ring and is fixedly connected with the roller at one end away from the brush, the driving unit further comprises a driving ring symmetrically fixedly sleeved on the outer circumferential surface of the two glue storage cylinders, the outer circumferential surface of the driving ring is in abutment with the outer circumferential surface of the roller on the glue storage cylinder, the driving unit further comprises two pairs of driving strips symmetrically fixedly connected at the top of the two fixed plates, the distantly apart side surfaces of the two pairs of driving strips are respectively in abutment with the outer circumferential surface of the fixed ring on the two pairs of glue storage cylinders, and the driving strips can drive the fixed ring to rotate when the glue storage cylinders are driven to move leftward and rightward by the leftward and rightward moving units, the fixed ring can drive the plurality of rollers to revolve while rotating, and the rollers can rotate by the driving of the driving ring when revolving, so that the brush can be driven to revolve and rotate at the same time, the glue outlet extruded glue can be uniformly applied to the upper and lower inner walls of the embedding groove, the glued edge pressed into the embedding groove can be reliably connected with the embedding groove through the uniformly distributed glue, the glued edge can be prevented from being separated from the embedding groove after long-term use, and the service life and reliability of the honeycomb panel are improved.

[0012] Preferably, the outer circumferential surface of the two pairs of glue storage cylinders is symmetrically fixedly sleeved with two pairs of fixed blocks, the top of the two fixed blocks on the lower side is symmetrically fixedly connected with two pairs of fixed cylinders, the top end of the fixed cylinder is symmetrically screw-threadedly connected with a first screw rod, the top end of the two pairs of first screw rods is fixedly connected with a rotating plate, the top of the two pairs of rotating plates is symmetrically rotatably connected to the bottom of the two fixed blocks on the upper side, the bottom of the two fixed blocks on the lower side is symmetrically connected to the two leftward and rightward moving units, the bottom of the two driving strips on the lower side is fixedly connected to the top of the two fixed plates through the two pairs of supporting rods, and the top of the two driving strips on the lower side is symmetrically rotatably connected with two pairs of second screw rods, and the two driving strips on the upper side are screw-threadedly sleeved on the outer screw thread surface of the two pairs of second screw rods, so that the distance between the upper and lower glue storage cylinders can be adjusted by rotating the rotating plate to drive the first screw rod to rotate, the glue application operation can be performed on the upper and lower inner walls of the embedding groove with different widths, the distance between the upper and lower driving strips can be adjusted by rotating the second screw rod, the two pairs of driving strips can still reliably drive the two pairs of fixed rings to rotate, the processing range of the edging machine is improved, and the reliability and practicality of the edging machine are further improved.

[0013] In conclusion, the technical effects and advantages of the utility model are as follows:

[0014] 1、In the utility model, the glue is extruded to the inner wall of the embedding groove through the glue outlet mechanism, and then the glue is uniformly applied to the inner wall of the embedding groove through the glue application mechanism, so that the glued edge can be reliably connected with the embedding groove after being pressed into the embedding groove, the glued edge can be prevented from being separated from the embedding groove after long-term use, and the service life and reliability of the honeycomb panel are improved.

[0015] 2、The utility model discloses a drive unit is set up, when the glue storage cylinder is moved left and right under the drive of left and right moving unit, the drive bar can drive the fixed ring rotation, the fixed ring rotation can drive multiple gyro wheels revolution simultaneously, the gyro wheel revolution can rotate under the drive of the drive ring, so that the roller brush revolution can rotate simultaneously, ensure that the glue outlet extruded glue is evenly applied on the upper and lower inner wall of the inlay groove, thereby not needing the additional power source to drive the roller brush rotation, reduce the energy consumption of the edging machine, improve the reliability and economy of the edging machine. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is the structural schematic diagram of a honeycomb plate edging machine in the embodiment of the utility model;

[0018] Figure 2 It is the partial structural schematic diagram of a glue coating assembly in the embodiment of the utility model;

[0019] Figure 3 It is the partial structural schematic diagram of a glue outlet mechanism in the embodiment of the utility model;

[0020] Figure 4 It is the structural schematic diagram of a glue storage cylinder in the embodiment of the utility model;

[0021] Figure 5 It is the partial structural schematic diagram of a glue storage cylinder in the embodiment of the utility model Figure 1 It is the enlarged schematic diagram of A in the embodiment of the utility model;

[0022] Figure 6 It is the enlarged schematic diagram of B in the embodiment of the utility model Figure 2 It is the enlarged schematic diagram of B in the embodiment of the utility model.

[0023] In the figure: 1, the bottom plate; 2, the glue applying assembly; 21, the position adjusting mechanism; 22, the fixed plate; 23, the left-right moving unit; 3, the pressing assembly; 31, the hydraulic cylinder; 32, the pressing plate; 4, the glue discharging mechanism; 41, the glue storage cylinder; 42, the glue discharging nozzle; 43, the glue discharging port; 431, the glue discharging hole; 44, the push rod; 45, the pushing unit; 451, the rectangular plate; 452, the electric push rod; 5, the glue spreading mechanism; 51, the fixed ring; 52, the first rotating shaft; 53, the connecting ring; 54, the roller brush; 55, the driving unit; 551, the roller; 552, the driving ring; 553, the driving bar; 61, the fixed block; 62, the fixed cylinder; 63, the first threaded rod; 64, the rotating plate; 65, the supporting rod; 66, the second threaded rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1-6 The honeycomb plate edge inlaying machine shown in the figure, including the bottom plate 1, the top of the bottom plate 1 is provided with the glue applying assembly 2 and the pressing assembly 3 from left to right, the glue applying assembly 2 includes two position adjusting mechanisms 21 connected symmetrically on the top of the bottom plate 1, two fixed plates 22 are connected symmetrically on the two position adjusting mechanisms 21, two left-right moving units 23 are connected symmetrically on the top of the two fixed plates 22, two glue discharging mechanisms 4 are connected symmetrically on the two left-right moving units 23, and two glue spreading mechanisms 5 are symmetrically provided on the two left-right moving units 23;

[0027] The pressing assembly 3 includes two groups of hydraulic cylinders 31 fixedly connected symmetrically on the top of the bottom plate 1, two pressing plates 32 are fixedly connected symmetrically on the output ends of the two groups of hydraulic cylinders 31, and the two pressing plates 32 are pushed to each other by the hydraulic cylinders 31 to press the edge into the inlaying groove on the side of the honeycomb plate;

[0028] The position adjusting mechanism 21 is used for adjusting the front-back position and height of the fixed plate 22;

[0029] The pressing assembly 3 is used for pressing the edge into the inlaying groove coated with glue.

[0030] Reference Figures 1-4The glue outlet mechanism 4 comprises two pairs of glue storage cylinders 41 symmetrically connected on the top of the two fixed plates 22, the outer wall of the glue storage cylinder 41 is communicated with a glue inlet pipe, the glue storage cylinder 41 can be supplemented with glue injection, the outer side of the two glue storage cylinders 41 away from each other is symmetrically fixed with a glue outlet nozzle 42, the glue outlet nozzle 42 is provided with a glue outlet 43, the glue outlet 43 is communicated with the glue storage cylinder 41, the side of the two pairs of glue storage cylinders 41 close to each other is provided with a plurality of glue outlets 431, the inner side wall of the two pairs of glue storage cylinders 41 is movably inserted with a piston, the side of the two pairs of pistons away from each other is symmetrically fixed with two pairs of push rods 44, the glue outlet mechanism 4 further comprises two push units 45 symmetrically connected on the two fixed plates 22, one end of the two pairs of push rods 44 away from each other penetrates the glue storage cylinder 41 and is connected with the two push units 45 respectively, the push unit 45 drives the two pairs of push rods 44 to move towards each other.

[0031] Specifically, the two pairs of pistons are driven by the two push units 45 to move towards each other, which can extrude the glue in the glue storage cylinder 41 through the glue outlet 43 and the glue outlet 431 to the inner side wall and the upper and lower inner wall of the honeycomb plate side inlay groove, and prepare for uniform and comprehensive coating of the glue on the inner wall of the inlay groove.

[0032] The push unit 45 comprises two rectangular plates 451 symmetrically fixed on the two pairs of push rods 44 away from each other, the push unit 45 further comprises two pairs of electric push rods 452 symmetrically fixed on the top of the two fixed blocks 61 on the lower side, the output ends of the two pairs of electric push rods 452 are symmetrically fixed on the sides of the two rectangular plates 451 away from each other, so that the two rectangular plates 451 can be driven by the electric push rod 452 to move towards each other to extrude the glue in the glue storage cylinder 41 through the glue outlet 43 and the glue outlet 431.

[0033] Reference Figures 2-4 The glue smearing mechanism 5 comprises two pairs of fixed rings 51 symmetrically rotating and sleeving on the outer circumferential surface of the two pairs of glue storage cylinders 41, a plurality of first rotation shafts 52 are annularly and equiangularly rotationally connected on the side of the two pairs of fixed rings 51 close to each other, one connecting ring 53 is rotationally connected to one end of the plurality of first rotation shafts 52 away from the fixed ring 51, the outer circumferential surface of the first rotation shaft 52 is fixedly sleeved with a roller brush 54, the glue smearing mechanism 5 further comprises two drive units 55 symmetrically connected on the top of the two fixed plates 22, the two drive units 55 drive the two pairs of fixed rings 51 and the first rotation shafts 52 thereon to rotate respectively.

[0034] Specifically, the driving unit 55 drives the two pairs of fixed rings 51 to rotate so that the fixed rings 51 drive the roller brushes 54 to revolve, and the driving unit 55 can also drive the roller brushes 54 to rotate, so that the roller brushes 54 can uniformly and quickly spread the glue squeezed out of the glue outlet 43 on the upper and lower inner walls of the inlay groove, and when the connecting ring 53 moves left and right under the driving of the left and right moving unit 23, the glue outlet 431 can uniformly spread the glue squeezed out of the glue outlet 431 on the inner wall of the inlay groove, so that the glue can be uniformly spread on the inner wall of the inlay groove, and after the edge cover is pressed into the inlay groove, the two can be reliably and tightly connected together, improving the connection firmness and reliability between the edge cover and the honeycomb panel.

[0035] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The driving unit 55 includes a roller 551, and the first rotating shaft 52 penetrates the fixed ring 51 away from the roller brush 54 and is fixedly connected with the roller 551. The driving unit 55 further includes a driving ring 552 fixedly sleeved on the outer circumferential surface of the two pairs of glue storage cylinders 41, and the outer circumferential surface of the driving ring 552 is in contact with the outer circumferential surface of the roller 551 on the glue storage cylinder 41. The driving unit 55 further includes two pairs of driving strips 553 fixedly connected to the top of the two fixed plates 22, and the outer circumferential surfaces of the two pairs of driving strips 553 are in contact with the outer circumferential surfaces of the fixed rings 51 on the two pairs of glue storage cylinders 41.

[0036] Specifically, when the glue storage cylinder 41 moves left and right under the driving of the left and right moving unit 23, the driving strip 553 drives the fixed ring 51 to rotate, and the fixed ring 51 drives the plurality of rollers 551 to revolve while rotating, and the roller 551 rotates under the driving of the driving ring 552, so that the roller brush 54 can revolve while rotating, ensuring that the glue squeezed out of the glue outlet 43 is uniformly spread on the upper and lower inner walls of the inlay groove, so that the roller brush 54 does not need to be driven to rotate by an additional power source, reducing the energy consumption of the edge inlay machine and improving the reliability and economy of the edge inlay machine.

[0037] Reference Figure 2 and Figure 5The outer circumferential surfaces of the two pairs of glue storage cylinders 41 are symmetrically fixed with two pairs of fixed blocks 61, the top portions of the two fixed blocks 61 on the lower side are symmetrically fixed and connected with two pairs of fixed cylinders 62, the top ends of the fixed cylinders 62 are symmetrically screwed and connected with first threaded rods 63, the top ends of the two pairs of first threaded rods 63 are fixedly connected with rotating plates 64, the top portions of the two pairs of rotating plates 64 are symmetrically rotatably connected to the bottom portions of the two fixed blocks 61 on the upper side, the bottom portions of the two fixed blocks 61 on the lower side are symmetrically connected to the two left-right moving units 23, the bottom portions of the two drive bars 553 on the lower side are fixedly connected to the top portions of the two fixed plates 22 through the two pairs of supporting rods 65, and the top portions of the two drive bars 553 on the lower side are symmetrically rotatably connected with two pairs of second threaded rods 66, and the two drive bars 553 on the upper side are symmetrically screwed on the outer threaded surfaces of the two pairs of second threaded rods 66.

[0038] Specifically, the rotating plates 64 are rotated to drive the first threaded rods 63 to rotate, so that the distance between the two glue storage cylinders 41 can be adjusted, thereby enabling the glue coating operation to be performed on the upper and lower inner side walls of the inlaid grooves with different widths, and meanwhile, the second threaded rods 66 are rotated to adjust the distance between the two drive bars 553, so that the two pairs of drive bars 553 can still reliably drive the two pairs of fixed rings 51 to rotate, thereby improving the processing range of the edging machine and further improving the reliability and practicality of the edging machine.

[0039] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A honeycomb panel edging machine comprising a base plate (1), characterised in that: The top of the bottom plate (1) is provided with a glue applying assembly (2) and a pressing assembly (3) from left to right, the glue applying assembly (2) comprises two position adjusting mechanisms (21) symmetrically connected to the top of the bottom plate (1), two fixed plates (22) are symmetrically connected to the position adjusting mechanisms (21), two left-right moving units (23) are symmetrically connected to the top of the fixed plates (22), two glue discharging mechanisms (4) are symmetrically connected to the left-right moving units (23), and two glue smearing mechanisms (5) are symmetrically arranged on the left-right moving units (23). The position adjusting mechanisms (21) are used for adjusting the front-rear position and height of the fixed plates (22). The pressing assembly (3) is used for pressing the edge into the inlaid groove coated with glue.

2. A honeycomb panel edging machine according to claim 1, characterised in that: The glue discharging mechanism (4) comprises two pairs of glue storage cylinders (41) symmetrically connected to the top of the fixed plates (22), the outer wall of the glue storage cylinder (41) is communicated with a glue inlet pipe, a glue discharging nozzle (42) is fixedly connected to the outer side face away from each other of each pair of glue storage cylinders (41) in a symmetrical mode, a glue discharging opening (43) is formed in the glue discharging nozzle (42), the glue discharging opening (43) is communicated with the glue storage cylinder (41), a plurality of glue discharging holes (431) are formed in the side face close to each other of each pair of glue storage cylinders (41), a piston is movably inserted into the inner side wall of each pair of glue storage cylinders (41), two pairs of push rods (44) are symmetrically fixedly connected to the side face away from each other of the pistons, the glue discharging mechanism (4) further comprises two push units (45) symmetrically connected to the fixed plates (22), and the ends of the two pairs of push rods (44) away from each other are inserted through the glue storage cylinders (41) and connected with the two push units (45), respectively, and the push units (45) drive the two pairs of push rods (44) to move towards each other.

3. A machine for edging a honeycomb panel according to claim 2, wherein: The glue smearing mechanism (5) comprises two pairs of fixed rings (51) symmetrically rotatably sleeved on the outer circumferential surface of the two pairs of glue storage cylinders (41), a plurality of first rotating shafts (52) are rotatably connected to the side face close to each other of each pair of fixed rings (51) in a ring-shaped equiangular mode, one and the same connecting ring (53) is rotatably connected to the ends of the first rotating shafts (52) away from the fixed rings (51), a roller brush (54) is fixedly sleeved on the outer circumferential surface of the first rotating shaft (52), and the glue smearing mechanism (5) further comprises two drive units (55) symmetrically connected to the top of the fixed plates (22), and the two drive units (55) drive the two pairs of fixed rings (51) and the first rotating shafts (52) thereon to rotate, respectively.

4. A machine for edging a honeycomb panel according to claim 3, wherein: The drive unit (55) comprises a roller (551), one end of the first rotating shaft (52) penetrates through the fixed ring (51) and is fixedly connected with the roller (551), the drive unit (55) further comprises a drive ring (552) which is symmetrically sleeved on the outer circumferential surface of the two storage barrels (41), the outer circumferential surface of the drive ring (552) is in contact with the outer circumferential surface of the roller (551) on the storage barrel (41), the drive unit (55) further comprises two pairs of drive bars (553) which are symmetrically fixedly connected on the top of the two fixed plates (22), the far apart side surfaces of the two pairs of drive bars (553) are respectively in contact with the outer circumferential surface of the drive ring (552) on the two pairs of storage barrels (41).

5. A machine for edging a honeycomb panel according to claim 4, wherein: The outer circumferential surface of the two pairs of storage barrels (41) is symmetrically fixedly sleeved with two pairs of fixed blocks (61), the top of the two fixed blocks (61) on the lower side is symmetrically fixedly connected with two pairs of fixed cylinders (62), the top end of the fixed cylinder (62) is symmetrically screwed with a first threaded rod (63), the top end of the two pairs of first threaded rods (63) is fixedly connected with a rotating plate (64), the top of the two pairs of rotating plates (64) is symmetrically rotatably connected on the bottom of the two fixed blocks (61) on the upper side, the bottom of the two fixed blocks (61) on the lower side is symmetrically connected on the two left-right moving units (23), the bottom of the two drive bars (553) on the lower side is symmetrically fixedly connected on the top of the two fixed plates (22) through the two pairs of supporting rods (65), the top of the two drive bars (553) on the lower side is symmetrically rotatably connected with two pairs of second threaded rods (66), the two drive bars (553) on the upper side are symmetrically screwed on the outer threaded surface of the two pairs of second threaded rods (66).

Images