CN217479586U - Open type roller device - Google Patents

Abstract

The utility model is suitable for a cylinder device technical field provides an open cylinder device, include: the device comprises two main clamping plates which are oppositely arranged along the horizontal direction, a bearing conductive shaft, a roller assembly, a driving mechanism, a plurality of groups of material loading frames, a conductive device and a plurality of groups of material loading frames, wherein two ends of the bearing conductive shaft are respectively and rotatably connected in the main clamping plates on the corresponding sides, the roller assembly is fixedly connected on the outer wall of the bearing conductive shaft between the two main clamping plates, the driving mechanism is arranged between the two main clamping plates and movably connected with the roller assembly, the outer wall of the bearing conductive shaft in the roller assembly is distributed with a plurality of groups of material loading frames along the extending direction of the material loading frames for realizing the support and placement of materials, the conductive device is electrically connected with the material loading frames, the limiting buckle is used for limiting the materials, the limiting buckle is used for limiting the processed materials to prevent the materials from falling off, when the device is soaked in electroplating solution, the conductive copper head transmits electric energy to the plurality of conductive brackets through the conductive device, the subsequent electroplating processing is convenient.

Description

Open type roller device

Technical Field

The utility model belongs to the technical field of the cylinder device, especially, relate to an open cylinder device.

Background

Barrel plating, namely barrel electroplating, is to place a certain number of workpieces in an inner cavity of a barrel plating barrel, and enable the workpieces to continuously contact electroplating solution in a tank body under the rotation of the barrel, so that a metal layer or an alloy coating with required thickness is deposited on the surface of the workpieces, and the purposes of protecting the surface of the workpieces and other functions are achieved.

However, the existing structure of the roller, the closed roller, the open pore of the barrel body, the limited exchange between the plating solution in the roller and the plating bath, the influence on the transfer of the plating solution from the plating bath in the bath to the roller, the amount of the plating solution metal ions in the roller far less than that of the plating solution metal ions in the bath, and the low electroplating efficiency; when a small amount of workpieces are arranged in the roller, the workpieces are distributed in the roller in a scattered manner, and part of the workpieces distributed in the middle of the roller cannot always contact the conductive head in the roller in the rotating and rolling process, so that the workpieces cannot conduct electricity quickly to adsorb metal ions, and the electroplating effect is influenced; a small amount of workpieces still need to be rolled for a plurality of times and electroplated for a long time to reach the required plating layer, thereby resulting in low electroplating efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides an open cylinder device aims at solving the problem of mentioning in the above-mentioned background art, improves the quality and the electroplating efficiency of electroplating the work piece greatly.

The utility model discloses a realize like this, an open cylinder device, include: two main clamping plates which are oppositely arranged along the horizontal direction, a bearing conductive shaft, two ends of which are respectively rotatably connected in the main clamping plates on the corresponding sides, a roller component which is fixedly connected on the outer wall of the bearing conductive shaft between the two main clamping plates, a driving mechanism which is arranged between the two main clamping plates and is movably connected with the roller component for driving the roller component to rotate circumferentially, a plurality of groups of material loading frames which are distributed on the outer wall of the bearing conductive shaft in the roller component along the extending direction and are used for realizing the support and placement of materials through the plurality of groups of material loading frames, a conductive device which is arranged on the two main clamping plates and is electrically connected with the plurality of groups of material loading frames, a limiting buckle which is buckled and connected on the outer side of the roller component along the length direction of the roller component for realizing the limitation of the materials, and a feeding mechanism, which is located on one side of the roller assembly and on which the material to be conveyed for processing is carried.

Preferably, the drum assembly includes: the two reinforcing plates are oppositely distributed on the outer wall of the bearing conductive shaft, a plurality of fixing ribs are circumferentially distributed between the two reinforcing plates, and the end part of each fixing rib is detachably and fixedly connected to the side wall of the reinforcing plate on the corresponding side;

each group the material loading frame all includes: the bearing conductive shaft is provided with a plurality of conductive brackets which are circumferentially distributed on the outer side of the bearing conductive shaft in a surrounding way, one end parts of the conductive brackets are inserted into the bearing conductive shaft, the other end parts of the conductive brackets are integrally provided with fan-shaped blocks, and through holes which can contain the fixing ribs and are in transition fit are formed in the fan-shaped blocks.

Preferably, a plurality of fixing ribs are further slidably connected with a plurality of adjustable limiting discs, the cross section of each adjustable limiting disc is in a disc shape, a hole groove for the fixing rib to penetrate through is formed in the fixing rib corresponding to the plurality of fixing ribs, and the plurality of adjustable limiting discs can slide to any position along the extending direction of the fixing rib.

Preferably, the drive mechanism includes: set up in bearing conductive shaft top, and rotate and connect in two driving shaft between the main splint, the cover is equipped with the driving gear on its one side tip, the driving gear cooperatees with external controlgear's drive end, is used for the drive the driving shaft rotates, is located two between the main splint on the outer wall of driving shaft, symmetrical cover is equipped with two first driven gear, and is located two on the terminal surface that the reinforcing plate was kept away from mutually, the rigid coupling has second driven gear, every side second driven gear all with correspond the side first driven gear meshing is connected.

Preferably, the inside of the bearing conductive shaft is of a hollow structure, and two equal fixed mounting is carried out on the side wall far away from the main clamping plate on the conductive device, two the conductive device equally divides the extension of the other part to the inside of the bearing conductive shaft, and is a plurality of the conductive support electric connection, wherein, two the conductive copper head electrically connected with the external power transmission equipment is further penetrated between the main clamping plates, and the conductive copper head is respectively and two fixedly connected with the conductive device.

Preferably, the spacing buckle includes: the arc-shaped section, its uncovered orientation the electrically conductive axle of bearing is located the homogeneous body shaping is provided with the crotch on the both ends of arc-shaped section, wherein, the uncovered internal diameter of crotch with the external diameter of fixed rib is unanimous, and two the uncovered orientation of crotch with the uncovered orientation of arc-shaped section is unanimous.

Preferably, two main clamping plates above the driving shaft are fixedly connected with lifting rods, a plurality of pull rods are distributed on the outer wall of the main clamping plates at intervals in sequence, and a first through hole and a second through hole are formed in the two ends of each pull rod respectively, wherein the first through hole and the second through hole are consistent with the outer diameter of the lifting rod.

Preferably, two fixed bottom pipes are symmetrically distributed between the two main clamping plates positioned below the roller assembly, and a plurality of bottom supporting plates are fixedly connected between the two fixed bottom pipes along the length direction in a reverse direction in sequence.

Preferably, the driving shaft is located two outer walls in the main clamping plate and is movably connected with a first bushing.

Preferably, the outer walls of the load-bearing conductive shafts in the two main clamping plates are movably connected with second bushings.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an open cylinder device:

the driving gear receives external control equipment's power drive back, it is rotatory to drive the driving shaft, it is rotatory that the epaxial first driven gear of driving drives the second driven gear, thereby it is rotatory to drive bearing conductive shaft drive drum assembly, because it has a plurality of material loading frame that are the annular and distribute to distribute in proper order on the outer wall of bearing conductive shaft, and then, the material of processing can be placed between two adjacent electrically conductive supports, it is spacing to utilize the spacing buckle that the buckle is connected on two adjacent fixed ribs to carry out the material of processing, when preventing drum assembly from rotating, the material drops from it, when this device soaks in the plating solution, the electrically conductive copper head obtains the electric energy from external power transmission equipment, transmit kinetic energy to a plurality of electrically conductive supports via electrically conductive device, thereby conveniently accomplish subsequent electroplating process.

The original open structure in the same direction has been abandoned to spacing buckle, utilizes the open design in the opposite direction between crotch and the segmental arc, can guarantee that spacing buckle is stable block all the time on fixed rib, avoids the material of processing to drop from drum set spare.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a side view of the present invention;

fig. 4 is a top view of the present invention;

fig. 5 is a schematic view of the middle limit buckle of the present invention;

FIG. 6 is a schematic view of a material loading frame according to the present invention;

in the figure:

1. a main splint;

2. a load-bearing conductive shaft;

3. a roller assembly; 31. a reinforcing plate; 32. fixing ribs; 33. an adjustable limiting disc;

4. a drive mechanism; 41. a drive shaft; 42. a driving gear; 43. a first driven gear; 44. a second driven gear;

5. a material loading frame; 51. a conductive support; 52. a sector block; 53. perforating;

6. a conductive device; 61. a conductive copper head;

7. a limiting buckle; 71. an arc-shaped section; 72. hooking;

8. lifting a rod; 81. a pull rod;

9. fixing the bottom tube; 91. a bottom support plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments, it is to be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

an open roller assembly comprising:

two main clamping plates 1 which are oppositely arranged along the horizontal direction, and a bearing conductive shaft 2, wherein two ends of the bearing conductive shaft are respectively and rotatably connected in the main clamping plates 1 at the corresponding sides;

drum assembly 3, on its rigid coupling was in the outer wall of the electrically conductive axle 2 of bearing between two main splint 1, drum assembly 3 included: the two reinforcing plates 31 are oppositely distributed on the outer wall of the bearing conductive shaft 2, a plurality of fixing ribs 32 are distributed between the two reinforcing plates, and the end part of each fixing rib 32 is detachably and fixedly connected to the side wall of the reinforcing plate 31 on the corresponding side;

actuating mechanism 4, it sets up between two main splint 1, and swing joint cylinder assembly 3 for drive its circumference is rotatory, and actuating mechanism 4 includes: set up in bearing conducting shaft 2 top, and rotate the driving shaft 41 of connecting between two main plates 1, the cover is equipped with driving gear 42 on its one end portion, driving gear 42 cooperatees with external controlgear's drive end, for drive driving shaft 41 rotates, be located on the outer wall of the driving shaft 41 between two main plates 1, symmetrical cover is equipped with two first driven gear 43, and be located the terminal surface that two reinforcing plates 31 kept away from mutually, the rigid coupling has second driven gear 44 respectively, the second driven gear 44 of each side all is connected with the first driven gear 43 meshing of corresponding side.

Specifically, when external control equipment switch on, its drive end during operation, it can with driving gear 42 intermeshing and then drive the driving gear 42 rotatory, driving gear 42 drives driving shaft 41 and rotates, it is further, when driving shaft 41 is rotatory, two first driven gear 43 that establish on its outer wall are rotatory, because the below of every first driven gear 43, all be provided with the second driven gear 44 that the cover was located on the outer wall of bearing conducting shaft 2, consequently, first driven gear 43 can be with rotatory kinetic energy transmission to second driven gear 44 on, and then, it is rotatory to drive second driven gear 44 control bearing conducting shaft 2.

It should be noted that two reinforcing plates 31 are oppositely installed on the outer wall of the bearing conductive shaft 2, and two second driven gears 44 are respectively installed on the outer walls far away from the bearing conductive shaft to ensure the fixation of the second driven gears 44 (it is further defined that the installation position of the reinforcing plates 31 is required to be located below the first driven gear 43, and to ensure the mutual engagement between the first driven gear 43 and the second driven gear 44).

In addition, still slidable is connected with a plurality of adjustable spacing dishes 33 on a plurality of fixed ribs 32, and its cross-section is the disc type, and offers the hole groove that supplies it to run through corresponding a plurality of fixed ribs 32, and a plurality of adjustable spacing dishes 33 can be followed the extending direction of fixed ribs 32 and slided to optional position.

Place the material of treating processing in drum assembly 3, wherein, adjustable spacing dish 33 can slide on a plurality of fixed ribs 32 to adjust its position on drum assembly 3, its aim at carries out spacing fixed to the both ends of being processed the material, prevents that it from when receiving drum assembly 3's roll, appearing misplacing, breaking away from, rocking etc. bad phenomenon.

The staff can be according to the actual length of being processed the material, and the position of adjustable spacing dish 33 on fixed rib 32 is adjusted to make adjustable spacing dish 33 install in the both ends position of being processed the material, fix and spacing being processed the material.

Referring to fig. 1-4 and 6, a plurality of sets of material loading frames 5 are distributed on the outer wall of the bearing conductive shaft 2 in the roller assembly 3 along the extending direction thereof, and the plurality of sets of material loading frames 5 are used for supporting and placing materials;

each group of material loading frames 5 comprises: a plurality of conductive brackets 51 circumferentially distributed around the outer side of the bearing conductive shaft 2, wherein one end of each conductive bracket 51 is inserted into the bearing conductive shaft 2, and the other end of each conductive bracket 51 is integrally provided with a fan-shaped block 52 which is provided with a through hole 53 capable of accommodating the fixing rib 32 and in transition fit with the fixing rib;

and the feeding mechanism is positioned on one side of the roller component 3 and bears the materials to be conveyed and processed.

Specifically, on the outer wall of the bearing conductive shaft 2 between the two reinforcing plates 31, a material loading frame 5 formed by assembling a plurality of conductive brackets 51 is installed, which can be understood by referring to fig. 6: each group of material loading frames 5 is formed by annularly combining a plurality of conductive supports 51, the plurality of conductive supports 51 are distributed at equal angles along the circumferential direction of the outer wall of the bearing conductive shaft 2, each conductive support 51 is detachably connected with the outer wall of the bearing conductive shaft 2, specifically, the end part of each conductive support 51 is inserted into the outer wall of the bearing conductive shaft 2, and then the position of the adjustable limiting disc 33 can be conveniently adjusted subsequently.

In addition, in order to ensure the installation and fixation of the other end (end facing the fixing rib 32) of the conductive bracket 51, it is preferable that a segment 52 is integrally formed at the end thereof, and a through hole 53 having an outer diameter identical to that of the fixing rib 32 is formed thereon, so that the fixing rib 32 penetrates through the through holes 53 of the segments 52 during the actual assembly process, and both ends are fixed to the main boards 1 on both sides.

The device is not shown in the figure and is provided with a feeding mechanism which can be a feeding frame, materials to be processed are placed on the feeding frame, a placing space for placing the materials is formed between two rows of conductive supports 51 which are adjacently distributed along the circumferential outer wall of the bearing conductive shaft 2, and when the placing space moves to a position facing the feeding mechanism along with the rotation of the roller component 3, a worker can manually push the materials into the placing space or push the materials into the placing space through a material pushing device.

Referring to fig. 1 and 3, the conductive devices 6 are disposed on the two main clamping plates 1 and electrically connected to the plurality of sets of material loading frames 5;

the inside of the electrically conductive axle 2 of bearing is hollow structure, and equal fixed mounting has electrically conductive device 6 on the lateral wall that two main splint 1 kept away from mutually, and in the electrically conductive axle 2 of bearing is equallyd divide to other part to two electrically conductive device 6, and with a plurality of electrically conductive support 51 electric connection, wherein, still run through between two main splint 1 have with the electrically conductive copper head 61 of external power transmission equipment electricity connection, it respectively with two electrically conductive device 6 fixed connection.

Specifically, the electric installation 6 is installed on the terminal surface that two main splint 1 kept away from mutually, and it is provided with the electrically conductive extension that extends to in the electrically conductive axle 2 of bearing respectively, it has a plurality of electrically conductive copper head 61 to run through between two main splint 1, it respectively with two electric installation 6 rigid couplings, when electrically conductive copper head 61 receives the electric energy that external power transmission equipment carried, it can be with electric energy transmission to two electric installation 6 on, and carry the electric energy in the electrically conductive axle 2 of bearing through electrically conductive extension, carry for a plurality of electrically conductive support 51 via the electrically conductive axle 2 of bearing, guarantee the electroplating process to the material in the plating solution.

Referring to fig. 1 and 5, a limiting buckle 7 is fastened and connected to the outer side of the roller assembly 3 along the length direction thereof for limiting the material;

spacing buckle 7 includes: the arc-shaped section 71 is open towards the load-bearing conductive shaft 2, and hooks 72 are integrally formed on two ends of the arc-shaped section 71, wherein the inner diameter of the opening of each hook 72 is consistent with the outer diameter of each fixing rib 32, and the opening directions of the two hooks 72 are consistent with the opening direction of the arc-shaped section 71.

Specifically, the limiting buckle 7 in this embodiment adopts two hooks 72 disposed in the opposite direction to the arc-shaped section 71, and compared with the conventional same-direction arrangement, the present solution has the advantages that the arc-shaped section 71 faces the load-bearing conductive shaft 2, the two hooks 72 are fastened to the two adjacent fixing ribs 32 from the inner side (i.e. the direction facing the load-bearing conductive shaft 2) of the fixing ribs 32 to the outer side (i.e. the direction away from the load-bearing conductive shaft 2), when the roller component 3 rotates, if the limiting buckle 7 moves to the position right below the roller component 3, at the moment, the corresponding material to be limited by the hook falls on the arc-shaped section 71 under the influence of gravity, and due to the reverse design of the hook 72, it still can be stable the centre gripping fixed rib 32 to can not drop from it (traditional spacing buckle 7 can receive the gravity and the impact force of material and break away from fixed rib 32), has guaranteed effectively spacingly to the material.

Referring to fig. 1-2, a lifting rod 8 is fixedly connected between two main clamping plates 1 above the driving shaft 41, and a plurality of pulling rods 81 are sequentially distributed on the outer wall of the main clamping plates at intervals, wherein a first through hole having the same outer diameter as the lifting rod 8 and a second through hole having the same outer diameter as the driving shaft 41 are respectively formed at both ends of each pulling rod 81;

two fixed bottom pipes 9 are symmetrically distributed between the two main clamping plates 1 positioned below the roller component 3, and a plurality of bottom supporting plates 91 are fixedly connected between the two fixed bottom pipes 9 along the length direction in turn.

Specifically, above the driving shaft 41, a lifting rod 8 fixedly connected with the lang end and the main splint 1 is arranged, and the driving shaft 41 is lifted through a plurality of pull rods 81 arranged on the outer wall, so that the phenomenon that the middle section of the driving shaft falls and deforms due to no support is avoided, and the normal operation of the driving mechanism 4 is ensured.

The bottom supporting plate 91 arranged on the fixed bottom pipe 9 can be used as a base, the contact surface between the bottom supporting plate and the ground is increased, and the working stability of the device is ensured.

Referring to fig. 2, the driving shaft 41 is movably connected to the outer walls of the two main splints 1;

the outer walls of the bearing conductive shafts 2 in the two main clamping plates 1 are movably connected with second bushings.

Specifically, the first bush and the second bush can effectively facilitate the rotation of the driving shaft 41 and the bearing conductive shaft 2, so that the friction generated during the rotation of the driving shaft is reduced, and the abrasion is avoided.

The utility model discloses a theory of operation and use flow: the utility model discloses install the back:

the worker continuously drives the driving end of the external control equipment to control the driving gear 42 to rotate, the driving gear 42 drives the driving shaft 41 to rotate, the driving shaft 41 drives the two first driven gears 43 on the outer wall of the driving shaft 41 to rotate, the two first driven gears 43 drive the meshed second driven gears 44 to rotate, the second driven gears 44 drive the bearing conductive shaft 2 to rotate through the reinforcing plate 31, the placing space between the two adjacent rows of conductive supports 51 faces the feeding mechanism, the worker pushes materials into the placing space from the feeding mechanism, the materials in the placing space are limited by the limiting buckles 7 buckled and connected to the adjacent fixing ribs 32, after the placing is completed, the positions of the adjustable limiting discs 33 are adjusted on the fixing ribs 32, and the two ends fixed on the materials are used for fixing the materials and limiting the transverse positions of the materials, after the conductive copper head 61 is electrified, the conductive copper head is conveyed to the conductive support 51 by the conductive device 6 and the bearing conductive shaft 2, so that the subsequent electroplating processing is conveniently realized.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (10)

1. An open roller assembly, comprising:

two main clamping plates (1) which are oppositely arranged along the horizontal direction;

the two ends of the bearing conductive shaft (2) are respectively and rotatably connected into the main clamping plates (1) on the corresponding sides;

the roller assembly (3) is fixedly connected to the outer wall of the bearing conductive shaft (2) between the two main clamping plates (1);

the driving mechanism (4) is arranged between the two main clamping plates (1), is movably connected with the roller assembly (3) and is used for driving the roller assembly to rotate in the circumferential direction;

a plurality of groups of material loading frames (5) are distributed on the outer wall of the bearing conductive shaft (2) in the roller assembly (3) along the extension direction of the bearing conductive shaft, and the materials are supported and placed through the plurality of groups of material loading frames (5);

the conducting devices (6) are arranged on the two main clamping plates (1) and are electrically connected with the plurality of groups of material loading frames (5);

the limiting buckle (7) is buckled and connected to the outer side of the roller component (3) along the length direction of the roller component and used for limiting the material;

and the feeding mechanism is positioned on one side of the roller component (3) and bears the materials to be conveyed and processed.

2. An open roller assembly according to claim 1, characterized in that the roller assembly (3) comprises:

the two reinforcing plates (31) are oppositely distributed on the outer wall of the bearing conductive shaft (2), a plurality of fixing ribs (32) are distributed between the two reinforcing plates in a surrounding manner, and the end part of each fixing rib (32) is detachably and fixedly connected to the side wall of the reinforcing plate (31) on the corresponding side;

each group of the material loading frames (5) comprises:

a plurality of conductive supports (51) circumferentially distributed on the outer side of the bearing conductive shaft (2) in a surrounding manner, and one end of each conductive support is inserted into the bearing conductive shaft (2);

the other end of the conductive bracket (51) is integrally provided with a fan-shaped block (52) which is provided with a through hole (53) which can accommodate the fixing rib (32) and is in transition fit with the fixing rib.

3. The open drum device according to claim 2, wherein a plurality of adjustable limiting discs (33) are slidably connected to the plurality of fixing ribs (32), the cross section of each adjustable limiting disc is in a disc shape, and a hole slot for the fixing ribs to pass through is formed corresponding to the plurality of fixing ribs (32);

the plurality of adjustable limiting discs (33) can slide to any position along the extending direction of the fixing ribs (32).

4. An open roller device according to claim 2, characterized in that said drive means (4) comprise:

the driving shaft (41) is arranged above the bearing conductive shaft (2) and is rotatably connected between the two main clamping plates (1), a driving gear (42) is sleeved on one side end of the driving shaft, and the driving gear (42) is matched with a driving end of external control equipment and used for driving the driving shaft (41) to rotate;

two first driven gears (43) are symmetrically sleeved on the outer wall of the driving shaft (41) between the two main clamping plates (1);

and the second driven gears (44) are fixedly connected to the end faces, far away from the two reinforcing plates (31), of each side, and the second driven gears (44) on each side are in meshed connection with the first driven gears (43) on the corresponding side.

5. An open-type drum device as claimed in claim 2, wherein the interior of said load-bearing conductive shaft (2) is hollow, and said conductive means (6) are fixedly mounted on the side walls of said two main plates (1) away from each other, and said two conductive means (6) extend partially into said load-bearing conductive shaft (2) and are electrically connected to a plurality of said conductive brackets (51);

and a conductive copper head (61) electrically connected with external power transmission equipment penetrates between the two main clamping plates (1) and is fixedly connected with the two conductive devices (6) respectively.

6. An open roller device, as in claim 2, characterized in that said limit catch (7) comprises:

an arc-shaped segment (71) open towards the load-bearing conductive shaft (2);

hooks (72) are uniformly formed on the two end parts of the arc-shaped section (71) in an integrated manner;

wherein the inner diameter of the opening of the hook (72) is consistent with the outer diameter of the fixing rib (32), and the opening directions of the two hooks (72) are consistent with the opening direction of the arc-shaped section (71).

7. The open type drum device according to claim 4, characterized in that a lifting rod (8) is fixedly connected between the two main clamping plates (1) above the driving shaft (41), and a plurality of pull rods (81) are sequentially distributed on the outer wall of the lifting rod at intervals;

and the two ends of each pull rod (81) are respectively provided with a first through hole with the same outer diameter as that of the lifting rod (8) and a second through hole with the same outer diameter as that of the driving shaft (41).

8. The open type drum device according to claim 2, wherein two fixed bottom pipes (9) are symmetrically distributed between the two main clamping plates (1) positioned below the drum assembly (3), and a plurality of bottom supporting plates (91) are sequentially and fixedly connected between the two fixed bottom pipes (9) along the length direction thereof in the opposite direction.

9. An open-ended drum arrangement, according to claim 4, characterized in that said drive shaft (41) is movably connected to a first bushing on the outer wall of both said main jaws (1).

10. An open cylinder device according to claim 1, characterized in that the outer wall of the load-bearing conductive shaft (2) inside the two main jaws (1) is movably connected with a second bushing.

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