CN215856497U

CN215856497U - Carbon fiber cutting machine capable of cleaning broken filaments

Info

Publication number: CN215856497U
Application number: CN202121067428.XU
Authority: CN
Inventors: 胡礼杰
Original assignee: Yancheng Xiang Sheng Carbon Fiber Technology Co ltd
Current assignee: Yancheng Xiang Sheng Carbon Fiber Technology Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2022-02-18
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a carbon fiber cutting machine capable of cleaning broken filaments, which comprises a case, wherein an unwinding roller, a pressing mechanism, a cutting mechanism and a winding roller are sequentially arranged at the bottom of an inner cavity of the case from left to right, a first guide roller is arranged between the unwinding roller and the pressing mechanism, a cleaning mechanism is arranged above the pressing mechanism, the cleaning mechanism is installed at the top of the case, a second guide roller is arranged between the cutting mechanism and the winding roller, carbon fibers are wound on the outer surface of the unwinding roller, a heater is connected to the top of the inner cavity of the case, a bent pipe is arranged on one side of the heater, and one end of the bent pipe is communicated with a suction fan; the cleaning mechanism is arranged, and the waste silk on the carbon fiber is sucked away by the hose through the dust hood on the guide pipe by starting the air suction pump, so that the waste silk adhered to the carbon fiber is removed.

Description

Carbon fiber cutting machine capable of cleaning broken filaments

Technical Field

The utility model relates to the technical field of carbon fiber processing, in particular to a carbon fiber cutting machine capable of cleaning broken filaments.

Background

The carbon fiber is a novel fiber material of high-strength and high-modulus fiber with the carbon content of more than 95 percent. It is made up by stacking organic fibres of flake graphite microcrystals along the axial direction of fibre, and making carbonization and graphitization treatment so as to obtain the invented microcrystal graphite material. The carbon fiber is flexible outside and rigid inside, has lighter weight than metal aluminum, higher strength than steel, corrosion resistance and high modulus, and is an important material in national defense, military industry and civil use. It not only has the intrinsic characteristic of carbon material, but also has the soft workability of textile fiber, and is a new generation of reinforced fiber.

The existing carbon fiber cutting device can not collect the carbon fiber waste silk generated during cutting, thereby being incapable of ensuring the production quality of the carbon fiber. In view of the above drawbacks, it is necessary to design a carbon fiber cutting machine capable of cleaning shredded fibers.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a carbon fiber cutting machine capable of cleaning broken filaments so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a can carry out carbon fiber cutting machine of clearance to shredded, includes quick-witted case, machine incasement chamber bottom has set gradually unwinding roller, swager structure, cutting mechanism and wind-up roll from a left side to the right side, be provided with first guide roll between unwinding roller and the swager structure, the top of swager structure is provided with clearance mechanism, clearance mechanism installs the top at quick-witted case, be provided with the second guide roll between cutting mechanism and the wind-up roll, the winding carbon fiber of unwinding roller surface, machine incasement chamber top is connected with the heater, and one side of heater is provided with the return bend, the one end intercommunication suction fan of return bend.

Preferably, the pressing mechanism comprises a hydraulic cylinder, the hydraulic cylinder is installed in the installation cavity, sliding cavities are arranged on two sides of the installation cavity, a tool apron is arranged above the installation cavity, a controller is arranged on the hydraulic cylinder, a telescopic rod of the hydraulic cylinder is connected with the movable frame, and pressing assemblies are installed at two ends of the movable frame.

Preferably, press the material subassembly including supporting slide bar, clamp plate mounting bracket, supplementary slide bar, positioning pressure plate and locking clamp plate, support the slide bar and run through smooth chamber, support the top of slide bar and install the clamp plate mounting bracket, supplementary smooth chamber has been seted up to the both sides of clamp plate mounting bracket, supplementary slide bar passes through supplementary smooth intracavity of supplementary spring installation, positioning pressure plate and locking clamp plate are installed respectively to the below of supplementary slide bar, at least one pressure sensor is installed to the both sides of blade holder, pressure sensor links to each other with the controller.

Preferably, the last mounting bracket that is equipped with of cutting mechanism, be equipped with horizontal linear module on the mounting bracket, install vertical linear module on the sliding block of horizontal linear module, install the buffering mounting bracket on the sliding block of vertical linear module, the below of buffering mounting bracket is equipped with the cutting knife subassembly.

Preferably, the buffering mounting bracket includes movable mounting cover, tightly decides bolt, first mounting bracket, supplementary installation sleeve and second mounting bracket, be equipped with the installation pole on the sliding block of vertical linear module, the movable mounting cover is through tightly deciding bolt movable mounting on the installation pole, the below of first mounting bracket is equipped with supplementary installation sleeve, install the buffering slide bar in the supplementary installation sleeve, the periphery of buffering slide bar is equipped with buffer spring, the telescopic both sides of supplementary installation are equipped with the second mounting bracket, the spout has been seted up in the second mounting bracket.

Preferably, the cutter assembly passes through the bolt and installs on the spout, be equipped with the cooperation chamber in the cutter assembly, the buffering slide bar cooperatees with the bottom surface in cooperation chamber, the cutter assembly includes third mounting bracket, cutter mounting bracket and cutter, the below at the buffering mounting bracket is installed to the third mounting bracket, the below of third mounting bracket is equipped with the cutter mounting bracket, install the cutter in the cutter mounting bracket.

Preferably, clearance mechanism includes the suction hood, and the suction hood is located the top of blade holder, and the suction hood is connected with the bottom of pipe, and the pipe setting has seted up the opening at the inboard of opening, the middle part on quick-witted case top, and the top on pipe right side is connected with the hose, and the one end intercommunication aspirator pump of pipe is kept away from to the hose, and the left side of pipe is connected with the regulating plate.

Preferably, the left side of regulating plate is connected with the rack, and the left side meshing drive gear of rack, drive gear's middle part through connection has the transmission shaft, and the bearing has all been cup jointed with the back in the front in the transmission shaft outside, and the bottom of bearing is connected with the top of quick-witted case through the anchor strut, and the outside of transmission shaft is connected with driving motor through the drive belt, and driving motor's bottom is connected with the motor cabinet, and the bottom of motor cabinet is connected with the top of quick-witted case.

Compared with the prior art, when the carbon fiber cutting machine capable of cleaning broken filaments is used, the winding motor works the winding roller to rotate, the carbon fibers on the unwinding wheel are unwound, the unwound carbon fibers enter the upper part of the cutter holder through the first guide roller, then enter the winding roller under the guide of the second guide roller, and finally are wound on the winding roller; when carbon fiber enters the upper part of the tool apron, the controller controls the action of the hydraulic cylinder, the telescopic rod of the hydraulic cylinder is shortened, the moving frame moves downwards, the pressing plates on the two sides move downwards, the pressure sensor transmits the received pressure signal to the controller in real time, after the upper limit is reached, the controller controls the hydraulic cylinder to stop acting, and controls the action of the cutting mechanism, at the moment, the locking pressing plate presses the carbon fiber on the tool apron, the action of the transverse linear module drives the vertical linear module and the cutter to move above the tool apron, the action of the vertical linear module drives the cutter to move downwards, the cutter is matched with the tool apron to cut the carbon fiber, after the cutting is finished, the vertical linear module is lifted and reset, the transverse linear module is moved and reset, so that the cutter is positioned on one side of the tool apron, the telescopic rod of the hydraulic cylinder is reset, the one-time cutting operation is finished, the next rolling cutting operation can be carried out, the buffer mounting frame is arranged on the cutting knife assembly, the cutter is convenient to replace, and meanwhile, the impact between the cutter and the cutter holder in the cutting process of the cutter can be reduced, the abrasion of the cutter is reduced, and the service life of the cutter is prolonged; the heater is started after the cutting is completed, the heater dries the carbon fibers, the waste silk that drops when the suction fan absorbs drying starts the driving motor, the transmission gear rotates, the transmission gear drives the adjusting plate through the rack to lift, the dust hood can contact the carbon fibers, the suction pump is started, the hose sucks the waste silk on the carbon fibers through the dust hood on the guide pipe, and therefore the waste silk adhered to the carbon fibers is removed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a schematic structural diagram of a carbon fiber cutting machine capable of cleaning shredded carbon fibers according to the present invention;

FIG. 2 is a schematic structural diagram of a material pressing mechanism in a carbon fiber cutting machine capable of cleaning broken filaments according to the present invention;

FIG. 3 is a schematic structural diagram of a cutting mechanism of a carbon fiber cutting machine capable of cleaning shredded fibers according to the present invention;

fig. 4 is a schematic structural diagram of a cleaning mechanism in a carbon fiber cutting machine capable of cleaning shredded fibers according to the present invention.

In the drawings:

1. a chassis; 2. unwinding rollers; 3. a material pressing mechanism; 4. a cutting mechanism; 5. a wind-up roll; 6. a first guide roller; 7. a cleaning mechanism; 8. a second guide roller; 9. a heater; 10. bending the pipe; 11. a suction fan; 12. a hydraulic cylinder; 13. a mounting cavity; 14. a slide chamber; 15. a tool apron; 16. a movable frame; 17. a material pressing component; 18. supporting the sliding rod; 19. a platen mounting frame; 20. an auxiliary slide bar; 21. positioning a pressing plate; 22. Locking the pressing plate; 23. an auxiliary spring; 24. a controller; 25. a pressure sensor; 26. a mounting frame; 27. A transverse linear module; 28. a vertical linear module; 29. a buffer mounting bracket; 30. a cutter assembly; 31. A movable mounting sleeve; 32. tightening the bolt; 33. a first mounting bracket; 34. the sleeve is installed in an auxiliary mode; 35. a second mounting bracket; 36. mounting a rod; 37. buffering the sliding rod; 38. a buffer spring; 39. a chute; 40. a bolt; 41. a mating cavity; 42. a third mounting bracket; 43. a tool mounting bracket; 44. a cutter; 45. a dust hood; 46. a conduit; 47. a port; 48. a hose; 49. a getter pump; 50. an adjusting plate; 51. a rack; 52. a transmission gear; 53. a drive shaft; 54. a bearing; 55. a reinforcing rod; 56. a transmission belt; 57. a drive motor; 58. a motor base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a carbon fiber cutting machine capable of cleaning shredded fibers comprises a machine case 1, wherein an unwinding roller 2, a pressing mechanism 3, a cutting mechanism 4 and a winding roller 5 are sequentially arranged at the bottom of an inner cavity of the machine case 1 from left to right, a first guide roller 6 is arranged between the unwinding roller 2 and the pressing mechanism 3, a cleaning mechanism 7 is arranged above the pressing mechanism 3, the cleaning mechanism 7 is installed at the top of the machine case 1, a second guide roller 8 is arranged between the cutting mechanism 4 and the winding roller 5, carbon fibers are wound on the outer surface of the unwinding roller 2, a heater 9 is connected to the top of the inner cavity of the machine case 1, a bent pipe 10 is arranged on one side of the heater 9, one end of the bent pipe 10 is communicated with a suction fan 11, and the heater 9 can be used in a matched manner with the suction fan 11 to heat the carbon fibers which are conveyed in the machine case 1 when the heater 9 is used for heating, thereby let the waste silk on the dry carbon fiber can be got rid of through the suction that suction fan 11 produced to guarantee the production quality of carbon fiber, the bottom and the quick-witted case 1 of suction fan 11 are connected.

In this embodiment the one end of wind-up roll 5 is connected with winding motor's output, drives wind-up roll 5 through winding motor and rotates, and then carries out the rolling to the carbon fiber.

The pressing mechanism 3 in this embodiment includes a hydraulic cylinder 12, the hydraulic cylinder 12 is installed in an installation cavity 13, sliding cavities 14 are arranged on two sides of the installation cavity 13, a tool apron 15 is arranged above the installation cavity 13, a controller 24 is arranged on the hydraulic cylinder 12, a telescopic rod of the hydraulic cylinder 12 is connected with a moving frame 16, pressing components 17 are installed at two ends of the moving frame 16, each pressing component 17 includes a supporting slide rod 18, a pressing plate installation frame 19, an auxiliary slide rod 20, a positioning pressing plate 21 and a locking pressing plate 22, the supporting slide rod 18 penetrates through the sliding cavity 14, the pressing plate installation frame 19 is installed above the supporting slide rod 18, the auxiliary sliding cavities are opened on two sides of the pressing plate installation frame 19, the auxiliary slide rod 20 is installed in the auxiliary sliding cavities through an auxiliary spring 23, the positioning pressing plate 21 and the locking pressing plate 22 are installed below the auxiliary slide rod 20, at least one pressure sensor 25 is installed on two sides of the tool apron 15, the positioning pressing plate 21 is matched with the pressure sensor 25, the pressure sensor 25 is connected with the controller 24, and the locking pressing plate 22 is matched with the carbon fibers.

In this embodiment be equipped with mounting bracket 26 on the cutting mechanism 4, be equipped with horizontal linear module 27 on the mounting bracket 26, install vertical linear module 28 on horizontal linear module 27's the sliding block, install buffering mounting bracket 29 on vertical linear module 28's the sliding block, the below of buffering mounting bracket 29 is equipped with cutting knife subassembly 30, cutting knife subassembly 30 cooperatees with blade holder 15.

In this embodiment, the buffering mounting frame 29 includes a movable mounting sleeve 31, a fastening bolt 32, a first mounting frame 33, an auxiliary mounting sleeve 34 and a second mounting frame 35, a mounting rod 36 is disposed on a sliding block of the vertical linear module 28, the movable mounting sleeve 31 is movably mounted on the mounting rod 36 through the fastening bolt 32, the auxiliary mounting sleeve 34 is disposed below the first mounting frame 33, a buffering sliding rod 37 is mounted in the auxiliary mounting sleeve 34, a buffering spring 38 is disposed on the periphery of the buffering sliding rod 37, the second mounting frame 35 is disposed on two sides of the auxiliary mounting sleeve 34, a sliding groove 39 is formed in the second mounting frame 35, the cutting knife assembly 30 is mounted on the sliding groove 39 through a bolt 40, a matching cavity 41 is disposed in the cutting knife assembly 30, the buffering sliding rod 37 is matched with the bottom surface of the matching cavity 41, and the cutting knife assembly 30 includes a third mounting frame 42, a second mounting frame 35, The cutter mounting frame 43 and the cutter 44, the third mounting frame 42 is installed below the buffer mounting frame 29, the cutter mounting frame 43 is arranged below the third mounting frame 42, and the cutter 44 is installed in the cutter mounting frame 43.

The cleaning mechanism 7 in this embodiment includes a dust hood 45, the dust hood 45 is located above the tool apron 15, the dust hood 45 is connected to the bottom of the conduit 46, the conduit 46 is disposed inside the port 47, the port 47 is disposed in the middle of the top end of the case 1, the hose 48 is connected to the top of the right side of the conduit 46, through the use of the hose 48, when the height of the conduit 46 is adjusted, the hose 48 can support the suction pump 49 to allow the dust hood 45 on the conduit 46 to generate suction force, one end of the hose 48 away from the conduit 46 is communicated with the suction pump 49, through the cooperation of the suction pump 49, the conduit 46 and the dust hood 45, when the suction port of the dust hood 45 is in contact with the carbon fiber on the tool apron 15, the suction pump 49 can suck away the waste silk that is difficult to remove on the surface of the carbon fiber through the conduit 46, thereby ensuring the removal effect of the waste silk, the left side of the conduit 46 is connected with an adjusting plate 50, the left side of the adjusting plate 50 is connected with a rack 51, the left side of the rack 51 is meshed with a transmission gear 52, the transmission gear 52 is used in cooperation with the adjusting plate 50, the rack 51 and the transmission gear 52, when the transmission gear 52 rotates, the transmission gear 52 can drive the guide pipe 46 to lift through the rack 51 on the adjusting plate 50, so as to ensure that the dust hood 45 can be stably contacted with carbon fibers, the middle part of the transmission gear 52 is connected with a transmission shaft 53 in a penetrating manner, bearings 54 are sleeved on the front side and the back side of the outer side of the transmission shaft 53, the bottom of the bearing 54 is connected with the top of the case 1 through a reinforcing rod 55, the bearings 54 and the reinforcing rod 55 are used in cooperation, so that the bearings 54 and the reinforcing rod 55 can play a supporting role for the transmission gear 52 through the transmission shaft 53, so that the transmission gear 52 can be more stable when rotating, the outer side of the transmission shaft 53 is connected with a driving motor 57 through a driving belt 56, the bottom of the driving motor 57 is connected with a motor base 58, and the bottom of the motor base 58 is connected with the top of the case 1.

When the carbon fiber unwinding device is used, the winding motor works to wind the winding roller 5 to unwind the carbon fibers on the unwinding wheel 2, the unwound carbon fibers enter the upper part of the cutter holder 15 through the first guide roller 6, then enter the winding roller 5 under the guidance of the second guide roller 8, and finally, winding is realized on the winding roller 5; when carbon fiber enters the upper part of the tool apron 15, the controller 24 controls the hydraulic cylinder 12 to act, the telescopic rod of the hydraulic cylinder 12 is shortened, the moving frame 16 moves downwards, the pressing plates 17 on the two sides move downwards, the pressure sensor 25 transmits the received pressure signal to the controller 24 in real time, after the upper limit is reached, the controller 24 controls the hydraulic cylinder 12 to stop acting, and controls the cutting mechanism 4 to act, at the moment, the locking pressing plate 22 presses the carbon fiber on the tool apron 15, the transverse linear module 27 acts to drive the vertical linear module 28 and the cutter 44 to move above the tool apron 15, the vertical linear module 28 acts to drive the cutter 44 to move downwards, the cutter 44 is matched with the tool apron 15 to cut the carbon fiber, after cutting is completed, the vertical linear module 28 rises to reset, the transverse linear module 27 moves to reset, so that the cutter 44 is positioned on one side of the tool apron 15, the telescopic rod of the hydraulic cylinder 12 resets, and one-time cutting operation is completed, the next winding and cutting operation can be carried out, the buffer mounting frame 29 is arranged on the cutting knife assembly 30, so that not only is the replacement of a knife convenient, but also the impact between the knife 44 and the knife holder 15 in the cutting process can be reduced, the abrasion of the knife 44 is reduced, and the service life of the knife 11 is prolonged; after the cutting is completed, the heater 9 is started, the heater 9 dries the carbon fibers, the suction fan 11 absorbs the waste fibers falling off during drying, the driving motor 57 is started, the transmission gear 52 rotates, the transmission gear 52 drives the adjusting plate 50 to lift through the rack 51, the dust hood 45 can contact the carbon fibers, the suction pump 49 is started, the hose 48 sucks the waste fibers on the carbon fibers through the dust hood 45 on the guide pipe 46, and therefore the waste fibers adhered to the carbon fibers are removed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a can carry out carbon fiber cutting machine of clearance to shredded, its characterized in that: including quick-witted case (1), machine case (1) inner chamber bottom has set gradually from a left side to the right side and has unreeled roller (2), swager structure (3), cutting mechanism (4) and wind-up roll (5), it is provided with first guide roll (6) to unreel between roller (2) and swager structure (3), the top of swager structure (3) is provided with clearance mechanism (7), the top at quick-witted case (1) is installed in clearance mechanism (7), be provided with second guide roll (8) between cutting mechanism (4) and wind-up roll (5), machine case (1) inner chamber top is connected with heater (9), and one side of heater (9) is provided with return bend (10), the one end intercommunication suction fan (11) of return bend (10).

2. The carbon fiber cutting machine capable of cleaning shredded carbon fiber according to claim 1, wherein: the material pressing mechanism (3) comprises a hydraulic cylinder (12), the hydraulic cylinder (12) is installed in an installation cavity (13), sliding cavities (14) are arranged on two sides of the installation cavity (13), a tool apron (15) is arranged above the installation cavity (13), a controller (24) is arranged on the hydraulic cylinder (12), a telescopic rod of the hydraulic cylinder (12) is connected with a moving frame (16), and material pressing components (17) are installed at two ends of the moving frame (16).

3. The carbon fiber cutting machine capable of cleaning shredded carbon fiber according to claim 2, wherein: press material subassembly (17) including supporting slide bar (18), clamp plate mounting bracket (19), supplementary slide bar (20), positioning pressure plate (21) and locking clamp plate (22), support slide bar (18) and run through smooth chamber (14), support the top of slide bar (18) and install clamp plate mounting bracket (19), supplementary smooth chamber has been seted up to the both sides of clamp plate mounting bracket (19), supplementary slide bar (20) are through supplementary smooth intracavity of auxiliary spring (23) installation, positioning pressure plate (21) and locking clamp plate (22) are installed respectively to the below of supplementary slide bar (20), at least one pressure sensor (25) are installed to the both sides of blade holder (15), pressure sensor (25) link to each other with controller (24).

4. The carbon fiber cutting machine capable of cleaning shredded carbon fiber according to claim 1, wherein: be equipped with on cutting mechanism (4) mounting bracket (26), be equipped with horizontal linear module (27) on mounting bracket (26), install vertical linear module (28) on the sliding block of horizontal linear module (27), install buffering mounting bracket (29) on the sliding block of vertical linear module (28), the below of buffering mounting bracket (29) is equipped with cutting knife subassembly (30).

5. The carbon fiber cutting machine capable of cleaning shredded carbon fiber according to claim 4, wherein: buffering mounting bracket (29) are including movable mounting cover (31), tightly decide bolt (32), first mounting bracket (33), supplementary installation sleeve (34) and second mounting bracket (35), be equipped with installation pole (36) on the sliding block of vertical linear module (28), movable mounting cover (31) is through tightly deciding bolt (32) movable mounting on installation pole (36), the below of first mounting bracket (33) is equipped with supplementary installation sleeve (34), install buffering slide bar (37) in supplementary installation sleeve (34), the periphery of buffering slide bar (37) is equipped with buffer spring (38), the both sides of supplementary installation sleeve (34) are equipped with second mounting bracket (35), spout (39) have been seted up in second mounting bracket (35).

6. The carbon fiber cutting machine capable of cleaning shredded carbon fiber according to claim 4, wherein: the utility model discloses a buffering mounting bracket (29) is installed to cutting knife subassembly (30), install on spout (39) through bolt (40), be equipped with cooperation chamber (41) in cutting knife subassembly (30), cutting knife subassembly (30) include third mounting bracket (42), cutter mounting bracket (43) and cutter (44), the below at buffering mounting bracket (29) is installed in third mounting bracket (42), the below of third mounting bracket (42) is equipped with cutter mounting bracket (43), install cutter (44) in cutter mounting bracket (43).

7. The carbon fiber cutting machine capable of cleaning shredded carbon fiber according to claim 1, wherein: clearance mechanism (7) are including suction hood (45), and suction hood (45) are located the top of blade holder (15), and suction hood (45) are connected with the bottom of pipe (46), and pipe (46) set up the inboard at opening (47), and opening (47) have been seted up at the middle part on quick-witted case (1) top, and the top on pipe (46) right side is connected with hose (48), and one end intercommunication aspirator pump (49) of pipe (46) are kept away from in hose (48), and the left side of pipe (46) is connected with regulating plate (50).

8. The carbon fiber cutting machine capable of cleaning shredded carbon fiber according to claim 7, wherein: the left side of regulating plate (50) is connected with rack (51), the left side meshing transmission gear (52) of rack (51), the middle part through connection of transmission gear (52) has transmission shaft (53), bearing (54) have all been cup jointed to the front and the back in transmission shaft (53) outside, the bottom of bearing (54) is passed through anchor strut (55) and is connected with the top of quick-witted case (1), the outside of transmission shaft (53) is connected with driving motor (57) through drive belt (56), the bottom of driving motor (57) is connected with motor cabinet (58), the bottom and the top of quick-witted case (1) of motor cabinet (58) are connected.