CN202162937U

CN202162937U - Gear driving-type L arm

Info

Publication number: CN202162937U
Application number: CN2011202609228U
Authority: CN
Inventors: 孙罗娇; 罗宏宇; 王晓平; 宋蕊
Original assignee: DESHUN CONTAINER Co Ltd CIXI CITY
Current assignee: DESHUN CONTAINER Co Ltd CIXI CITY
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-03-14
Anticipated expiration: 2021-07-22

Abstract

The utility model relates to a work arm structure in a rotational molding machine and discloses a gear driving-type L arm which mainly comprises a spindle, a main mandrel, an L arm, an auxiliary mandrel, a counterweight, a reversing component and the like, wherein a straight toothed gear is arranged on the spindle and directly meshed with a motor gear for power transmission, so as to replace a chain transmission structure in the traditional L arm structure and avoid the problem of impulse of the spindle during rotating when the chain transmission structure is adopted; meanwhile, oil seal rings and an elastic retaining ring are respectively arranged at two sides of a bearing for supporting the main mandrel to rotate and on one side of a bearing for supporting the auxiliary mandrel to rotate, therefore, the bearing sealing and lubricating problems of the main mandrel and the auxiliary mandrel can be well solved even at the high temperature of 300 DEG C, and finally the assembling and welding connection relationship of a stepped shaft and a stepped hole is established between one end of a reversing shaft and a fixed plate with a plate bevel gear, so that the working stability of the reversing component is effectively ensured.

Description

Gear drive formula L arm

Technical field

The utility model relates to the L arm configuration in a kind of rotational moulding machinery, is meant gear drive formula L arm specifically.

Background technology

Working arm structure in the rotational moulding machinery is mainly used in installation mold and rotates rotational moulding work, and simultaneously, in the prior art, the working arm of rotational moulding machinery can also be designed to patterns such as straight-arm, L arm, U arm according to the demands of different of product.The L arm configuration of rotational moulding machine for example; It mainly is made up of the main shaft of bearing supporting, main mandrel, L arm, counterweight, secondary mandrel and switching-over assembly etc.; Motor is used as power through chain, sprocket wheel and transmits and driving main shaft, main mandrel and the rotation of secondary mandrel respectively; Thereby drive the L arm around the rotation of X axle, the switching-over assembly rotates around the Z axle, makes the mould that is installed on the switching-over assembly realize 360 ° of rotation rotational moulding around X axle and Z axle; Often there is following defective in actual use in this L arm configuration: one, unstable through the main shaft working speed of chain, chain wheel drive by motor, pulsation phenomenon is often arranged; Two, under 300 ℃ of conditions of high temperature, the bearing seal and the lubrication problem that support main mandrel and secondary mandrel are not well solved; Three, switching-over assembly job insecurity.

Summary of the invention

The utility model technical problem to be solved is to overcome the defective of prior art and a kind of main shaft is provided and commutate assembly working stability, main mandrel and the bearing seal of secondary mandrel and the gear drive formula L arm of high lubricating effect.

The technical problem of the utility model realizes through following technical scheme:

A kind of gear drive formula L arm comprises main mandrel in the main shaft, main shaft, is installed in the L arm of main shaft one end and is installed in the switching-over assembly on the L arm, and described main shaft is rotated by motor-driven, and these main shaft two ends are bearing in respectively on the bearing in the bearing block; Described main mandrel two ends are arranged in the main shaft through the bearing supporting respectively, and this main mandrel one end stretches out main shaft and sprocket wheel is installed, and the main mandrel other end stretches out in the vertical tube of main shaft entering L arm; Described L arm comprises vertical tube and the transverse tube that is connected vertical tube one end, and the vertical tube other end is provided with counterweight; Also be provided with secondary mandrel in the described transverse tube, these pair mandrel two ends are arranged in the transverse tube through the bearing supporting respectively, and secondary mandrel one end stretches out transverse tube and gets in the vertical tube, and the secondary mandrel other end stretches out transverse tube and bevel gear is installed; Be provided with chain drive structure and regulating wheel mechanism between main mandrel in the described vertical tube and the secondary mandrel, described main shaft is provided with straight-tooth gear, the transmission of directly meshing and be used as power of this straight-tooth gear and motor gear; The bearing both sides of the main mandrel of described supporting are equipped with oil seal washer and circlip, and this oil seal washer, bearing and circlip all are enclosed in the main shaft by bearing cover; Bearing one side of the secondary mandrel of described supporting is equipped with oil seal washer and circlip, and this oil seal washer, bearing and circlip all are arranged in the auxiliary driving frame and by the bearing cover sealing, the auxiliary driving frame is installed in the transverse tube.

Described vertical tube is a rectangular tube, and this vertical tube is welded mutually by left plate, right panel and front and back side plate, is respectively equipped with fixed head at the vertical tube two ends and seals, and also is provided with the securing cover plate of square hole and sealing square hole on one of them fixed head; Described counterweight is installed on another fixed head.

Be respectively equipped with on the described vertical tube over against the capping of installing hole with the sealing installing hole of main mandrel and secondary mandrel.

Described transverse tube is a rectangular tube, and this transverse tube is welded mutually by upper plate, lower plate and front and back side plate.

Described switching-over assembly comprises the arm head that is connected the transverse tube end; Be provided with the reversing shaft that vertical secondary mandrel axial line is provided with in this arm head; And this reversing shaft supports and is installed in the arm head with bearing again; The two ends of reversing shaft are stretched out arm head and are separately installed with fixed disk and Spindle nose cover, and on fixed disk, are provided with the dish bevel gear, and this dish bevel gear is meshed with bevel gear on the secondary mandrel.

Described reversing shaft one end and be equipped with between the fixed disk of dish bevel gear and be set to the equipped relation that is welded to connect of multidiameter and shoulder hole.

Described arm head is provided with lubricating cup.

Be equipped with lubricating cup on described main shaft and the transverse tube.

Be provided with the terminal pad that is connected between described main shaft and the vertical tube, also be provided with stiffener between this terminal pad and the main shaft, be provided with reinforced company's fishplate bar between terminal pad and the vertical tube.

Compared with prior art; The utility model mainly is to be provided with the straight-tooth gear that directly meshes and be used as power and transmit with motor gear on the main shaft of L arm configuration in rotational moulding machinery; Thereby replace the chain drive structure in traditional L arm configuration; Avoid adopting chain drive structure and cause the problem of main shaft existence pulsation when rotating; Also will support main mandrel bearing both sides of rotating and bearing one side that the secondary mandrel of supporting rotates simultaneously and be provided with oil seal washer and circlip respectively, even like this under 300 ℃ of conditions of high temperature, the bearing seal of main mandrel and secondary mandrel and lubrication problem also can be well solved; Also with reversing shaft one end and be equipped with between the fixed disk of dish bevel gear and be set to the equipped relation that is welded to connect of multidiameter and shoulder hole, effectively guarantee the assembly job stability that commutates at last.

Description of drawings

Fig. 1 is the sectional structure sketch map of the utility model.

Fig. 2 is the A place enlarged drawing of Fig. 1.

Fig. 3 is the B place enlarged drawing of Fig. 1.

Fig. 4 is the C place enlarged drawing of Fig. 1.

The specific embodiment

To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.

Like Fig. 1～shown in Figure 4,1. sprocket wheel, 2. bearing block, 3. main shaft, 4. main mandrel, 5. straight-tooth gear, 6. vertical tube, 61. left plates, 62. right panels, 63. side plates, 64. fixed heads, 65. counterweights, 7. transverse tube, 71. lower plates, 72. upper plates, 8. switching-over assembly, 81. arm heads, 82. dish bevel gears, 83. fixed disks, 84. reversing shafts, 85. Spindle nose covers, 9. bearing, 10. bearing cover, 11. stiffeners, 12. lubricating cups, 13. terminal pads, 14. linings, 15. cappings, 16. installing holes, 17. regulating wheel mechanisms, 18. reinforced company's fishplate bars, 19. oil seal washers, 20. circlips, 21. auxiliary driving framves, 22. secondary mandrels, 23. bevel gears, 24. securing cover plates.

Gear drive formula L arm belongs to and is used for the workpiece that mould rolls dress in the rotational moulding machinery, mainly by main shaft 3, be arranged on main mandrel 4, the L arm in the main shaft and be installed in switching-over assembly 8 on the L arm etc. and constitute.

Described main shaft 3 is a hollow tubular structure; Its two ends are bearing in respectively on two bearings 9 that are installed in the bearing block 2; This bearing block is fixed on the workbench (not shown) of rotational moulding machinery, and the bearing 9 in two bearing blocks 2 is connected in bearing cover 10 on the bearing block is enclosed in by screw respectively; Also be provided with straight-tooth gear 5 on the main shaft 3, be connected to form transmission of power through key between this straight-tooth gear and the main shaft 3, and on straight-tooth gear 5, be provided with holding screw and connect fixing.Simultaneously; This straight-tooth gear 5 directly meshes with the motor gear (not shown) again; Can receive motor-driven to drive main shaft 3 rotation works through straight-tooth gear; Because the working speed of straight-tooth gear 5 is stable, so can solve the problem that adopts the chain transmission in original working arm and cause main shaft 3 rotation existence pulsation.The main shaft 3 of Fig. 1 left end is connected fixing with vertical tube 6 bolts of L arm through terminal pad 13, and on the main shaft 3 near terminal pad 13, also be provided with stiffener 11 and lubricating cup 12, and the bearing that this lubricating cup can be used for Fig. 1 left end is supported main mandrel 4 carries out oil injecting lubricating; Have additional reinforced company's fishplate bar 18 between the vertical tube 6 of terminal pad 13 and L arm.

Described main mandrel 4 two ends are supported and are arranged in the main shaft 3 through bearing; These bearing both sides of supporting main mandrel 4 are equipped with oil seal washer as shown in Figure 2 19 and circlip 20; And be fixed in bearing cover on the main shaft 3 is enclosed in above-mentioned oil seal washer 19, bearing and circlip 20 through screw; Also be provided with lubricating cup 12 on the bearing cover of Fig. 1 right-hand member and can carry out oiling; This structure can guarantee under 300 ℃ of conditions of high temperature, to slowly run, and the sealing and the lubrication problem of main mandrel 4 bearings can both be well solved.Main mandrel 4 one ends on Fig. 1 right side stretch out main shaft 3 after round nut and stop washer are equipped with lining and sprocket wheel 1, are connected to form transmission of power through key between this sprocket wheel and the main mandrel 4, and sprocket wheel 1 forms the chain transmission with motor shaft; Main mandrel 4 other ends in Fig. 1 left side stretch out main shaft 3 and get in the vertical tube 6 of L arm, and its main mandrel end also is equipped with lining 14 and sprocket wheel 1 through round nut and stop washer, is connected to form transmission of power through key between this sprocket wheel and the main mandrel 4.

Described L arm is to be made up of a rectangle vertical tube 6 and the rectangular cross tube 7 that is welded on vertical tube one end.

Described vertical tube 6 is welded mutually by left plate 61, right panel 62 and former and later two side plates 63; And all be welded with fixed head 64 at the vertical tube upper/lower terminal and seal; On the fixed head of upper end counterweight 65 is installed; Offer square hole on the fixed head of lower end, this square hole seals with the securing cover plate 24 that screw is connected on the fixed head; Also be provided with on the vertical tube 6 over against the installing hole 16 of main mandrel 4 and be connected the capping 15 so that installing hole is sealed on the vertical tube 6 with screw.

Described transverse tube 7 is to be welded mutually by upper plate 72, lower plate 71 and former and later two side plates, and this transverse tube right-hand member and vertical tube 6 are welded to connect and are integral, and left end is equipped with switching-over assembly 8; Be provided with secondary mandrel 22 in the transverse tube; These pair mandrel two ends are bearing in respectively on the bearing in the auxiliary driving frame 21; Two auxiliary driving framves are arranged in the transverse tube; Two bearing one sides at the secondary mandrel of supporting are equipped with circlip 20 and oil seal washer 19, and this circlip, oil seal washer and bearing all are connected the bearing cover sealing on the auxiliary driving frame 21 by screw.Secondary mandrel 22 1 ends on Fig. 1 right side stretch out transverse tube 7 and get in the vertical tube 6; Its secondary mandrel is terminal as shown in Figure 3ly to be equipped with lining and sprocket wheel 1 through round nut and stop washer; Be connected to form transmission of power through key between this sprocket wheel and the main mandrel 4; Sprocket wheel 1 on sprocket wheel 1 on the secondary mandrel 22 and the main mandrel 4 is for chain drive is connected, and regulating wheel mechanism 17 is set in vertical tube 6 carries out the tensioning adjusting; Secondary mandrel 22 other ends in Fig. 1 left side stretch out transverse tube 7 and bevel gear 23 and lining 14 are installed, and are connected to form transmission of power through key between this bevel gear and the secondary mandrel 22.

Described switching-over assembly 8 is as shown in Figure 4 to have an arm head 81, and said transverse tube 7 ends are connected fixing with this arm head bolt through connecting plate; Be provided with an installing hole in the described arm head 81; Arm head is provided with two lubricating cups that communicate with installing hole 12; These two lubricating cups are respectively through type lubricating cup and joint type forced filling oil cup, be provided with the reversing shaft 84 of the axial line setting of vertical secondary mandrel 22 in the installing hole, and this reversing shaft support and is installed in the installing hole of arm head 81 again with bearing; The two ends of reversing shaft 84 can be separately installed with fixed disk 83 and Spindle nose cover 85 as required; This fixed disk 83 is fitted on the multidiameter of reversing shaft 84 ends and welds fixingly through shoulder hole, also be provided with the dish bevel gear 82 that screw connects on this fixed disk, and this dish bevel gear is meshed with bevel gear 23 on the secondary mandrel 22.

Starter motor can be distinguished driving main shaft 3 and rotate with main mandrel 4; The main shaft rotation can drive the L arm and rotate around the X axle; And then the switching-over assembly 8 that drive is installed on the L arm also rotates; And main mandrel 4 rotates and can drive secondary mandrel 22 through chain drive structure and rotate, and the reversing shaft 84 that drives in the switching-over assembly 8 with dish bevel gear 82 through the bevel gear 23 that is meshed rotates around the Z axle, so can make Plastic Rolling Molds realize two-way 360 ° of rotation rotational moulding of X axle and Z axle.

Claims

1. gear drive formula L arm; The L arm that comprise main mandrel (4) in the main shaft (3), main shaft, is installed in main shaft (3) one ends be installed in the switching-over assembly (8) on the L arm; Described main shaft (3) is rotated by motor-driven, and these main shaft two ends are bearing in respectively on the bearing (9) in the bearing block (2); Described main mandrel (4) two ends are arranged in the main shaft (3) through bearing (9) supporting respectively, and these main mandrel (4) one ends stretch out main shaft and sprocket wheel (1) is installed, and the main mandrel other end stretches out in the vertical tube (6) of main shaft (3) entering L arm; Described L arm comprises vertical tube (6) and is connected the transverse tube (7) of vertical tube one end that the vertical tube other end is provided with counterweight (65); Also be provided with secondary mandrel (22) in the described transverse tube (7); These pair mandrel two ends are arranged in the transverse tube (7) through bearing (9) supporting respectively; Secondary mandrel (22) one ends stretch out transverse tube and get in the vertical tube (6), and the secondary mandrel other end stretches out transverse tube (7) and bevel gear (23) is installed; Be provided with chain drive structure and regulating wheel mechanism (17) between main mandrel (4) in the described vertical tube (6) and the secondary mandrel (22), it is characterized in that:

A, described main shaft (3) are provided with straight-tooth gear (5), the transmission of directly meshing and be used as power of this straight-tooth gear and motor gear;

Bearing (9) both sides of b, the main mandrel of described supporting (4) are equipped with oil seal washer (19) and circlip (20), and this oil seal washer (19), bearing (9) and circlip (20) all are enclosed in the main shaft (3) by bearing cover (10);

Bearing one side of c, the secondary mandrel of described supporting (22) is equipped with oil seal washer (19) and circlip (20); This oil seal washer (19), bearing (9) and circlip (20) all are arranged in the auxiliary driving frame (21) and by bearing cover (10) sealing, the auxiliary driving frame is installed in the transverse tube (7).

2. gear drive formula L arm according to claim 1; It is characterized in that described vertical tube (6) is a rectangular tube; This vertical tube is welded mutually by left plate (61), right panel (62) and front and back side plate (63); Be respectively equipped with fixed head (64) at vertical tube (6) two ends and seal, also be provided with the securing cover plate (24) of square hole and sealing square hole on one of them fixed head; Described counterweight (65) is installed on another fixed head.

3. gear drive formula L arm according to claim 1 is characterized in that being respectively equipped with on the described vertical tube (6) capping (15) over against the installing hole (16) and the sealing installing hole of main mandrel (4) and secondary mandrel (22).

4. gear drive formula L arm according to claim 1 is characterized in that described transverse tube (7) is a rectangular tube, and this transverse tube is welded mutually by upper plate (72), lower plate (71) and front and back side plate.

5. gear drive formula L arm according to claim 1; It is characterized in that described switching-over assembly (8) comprises the arm head (81) that is connected transverse tube (7) end; Be provided with the reversing shaft (84) that vertical secondary mandrel (22) axial line is provided with in this arm head; And this reversing shaft supports and is installed in the arm head (81) with bearing again; The two ends of reversing shaft are stretched out arm head and are separately installed with fixed disk (83) and Spindle nose cover (85), and on fixed disk, are provided with dish bevel gear (82), and this dish bevel gear is meshed with bevel gear (23) on the secondary mandrel (22).

6. gear drive formula L arm according to claim 5 is characterized in that described reversing shaft (84) one ends and the equipped relation that is welded to connect that is set to multidiameter and shoulder hole between the fixed disk (83) that coils bevel gear (82) is installed.

7. gear drive formula L arm according to claim 5 is characterized in that described arm head (81) is provided with lubricating cup.

8. gear drive formula L arm according to claim 1 is characterized in that being equipped with lubricating cup (12) on described main shaft (3) and the transverse tube (7).

9. gear drive formula L arm according to claim 1; It is characterized in that being provided with the terminal pad (13) that is connected between described main shaft (3) and the vertical tube (6); Also be provided with stiffener (11) between this terminal pad and the main shaft (3), be provided with reinforced company's fishplate bar (18) between terminal pad and the vertical tube (6).