CN202716407U

CN202716407U - Large-torque L arm for rotational molding machine

Info

Publication number: CN202716407U
Application number: CN 201220347111
Authority: CN
Inventors: 孙罗娇; 罗宏宇; 宋蕊; 王晓平; 陈兰兰
Original assignee: 孙罗娇
Priority date: 2012-07-18
Filing date: 2012-07-18
Publication date: 2013-02-06
Anticipated expiration: 2022-07-18

Abstract

The utility model discloses a large-torque L arm for a rotational molding machine, and relates to a work arm structure on rotational molding machine for producing hollow rotational molding products by using molding powder. The large-torque L arm comprises a movable frame, a main shaft motor, a main shaft, a counter shaft motor, a counter shaft, an L arm, an arm head, a disc gear, a core shaft and the like, wherein the L arm comprises a vertical arm, a balance weight piece, a transverse outer arm and a transverse inner arm. The large-torque L arm is characterized in that the main shaft is arranged in the counter shaft in a rotational mode, so that the main shaft is connected with the vertical arm of the L arm; and a chain transmission connection structure is arranged between the output end of the counter shaft and the transverse inner arm. According to the structure, a chain wheel on the counter shaft is convenient to improve; the diameter and tooth number of the chain wheel can be increased according to the actual using demand of the rotational molding machine, and the output torque of the L arm is also increased correspondingly, so that the large-torque L arm can be suitable for machining large-scale rotational molding products on the large-scale rotational molding machine.

Description

Rotational molding machine high pulling torque L arm

Technical field

The utility model relates to a kind of L arm configuration of rotational molding machine, relates in particular to a kind of rotational molding machine high pulling torque L arm.

Background technology

Rotational molding machine is a kind of rotomoulding apparatus that adopts plastic powder to make the hollow rotomoulded articles, it mainly rotates around X-axis and Y-axis by the Plastic Rolling Molds behind the working arm drive thermally equivalent, make the plastic powder of melting in the Plastic Rolling Molds under Action of Gravity Field, be coated with uniformly, adhere to the whole inner surface of Plastic Rolling Molds, thereby make the rotomoulded articles moulding, behind cooling and shaping, die sinking can be taken out finished product again.The working arm arm type that adopts in the rotational molding machine at present mainly comprises straight-arm, L arm and U arm, be 201120260920.9 " gear driving type straight arm " in the disclosed China Patent No. of first to file such as this case applicant, disclosed China Patent No. is that 201120260922.8 " gear driving-type L arm " and disclosed China Patent No. are 201120260919.6 " gear-driven U-shaped arm ", L arm wherein mainly is to drive the main shaft that rotates by spindle motor, the formations such as the countershaft that the countershaft motor-driven is rotated and L arm, wherein the main shaft output connects the perpendicular arm of L arm, the countershaft output passes through chain transmission connecting structure transmission of power to the horizontal inner arm of L arm, and the rotational molding machine L arm that adopts at present, its countershaft all is rotatably installed in the main shaft usually, so be installed in the very easily acceptor's shaft size restriction of chain transmission connecting structure between countershaft and the horizontal inner arm, thereby so that the sprocket diameter on the countershaft can't be done greatly, the number of teeth can't increase, therefore also limit the increase of L arm moment of torsion, caused this L arm to be only applicable to the processing that small-sized rotational molding machine carries out small-sized rotomoulded articles.

Summary of the invention

Goal of the invention of the present utility model is to overcome the defective of prior art and the rotational molding machine high pulling torque L arm that a kind of moment of torsion is large, can be applicable to massive rotationally moulded machine is provided.

Goal of the invention of the present utility model realizes by following technical proposal:

A kind of rotational molding machine high pulling torque L arm, comprise that slippage is arranged on the mobile vehicle frame on the ground guide, this locomotive top of the trellis is equipped with main shaft and countershaft, mobile vehicle frame is provided with the drive shaft spindle motor that rotates and the countershaft motor that drives the countershaft rotation, the output of described main shaft and countershaft all is connected on the L arm, described countershaft is installed in outside the main shaft, is provided with the bearing of the supporting that rotates between this countershaft and the main shaft; Be provided with the chain transmission connecting structure that is used as power and transmits between described countershaft motor and the countershaft.

Described L arm comprises perpendicular arm, counterweight and is vertically connected on horizontal outer arm and the horizontal inner arm that erects on the arm that this horizontal inner arm rotates with bearing and is bearing in the horizontal outer arm; Described main shaft output is connected on the perpendicular arm of L arm; Be provided with the chain transmission connecting structure that is used as power and transmits between described countershaft and the horizontal inner arm; Described horizontal outer arm output is provided with arm head, is provided with the mandrel with the bearing supporting in this arm head, is respectively equipped with engagement between this mandrel one end and the horizontal inner arm output and the dish gear of the transmission that is used as power, and at the dish gear of mandrel Plastic Rolling Molds is installed.

Be provided with the gear drive syndeton between described spindle motor and the main shaft.

Compared with prior art, the utility model mainly is that main shaft is rotatably installed in the countershaft, so that main shaft is provided with the chain transmission connecting structure outside and between the horizontal inner arm of L arm at perpendicular arm, the countershaft of interior connection L arm, this structure has greatly made things convenient for the improvement of countershaft upper sprocket wheel, it can increase sprocket diameter, increase teeth number of sprocket according to the actual use needs of rotational molding machine, the corresponding output torque that also strengthens the L arm is so more can be applicable to carry out on the massive rotationally moulded machine processing of massive rotationally moulded products.

Description of drawings

Fig. 1 is structural representation of the present utility model (partial sectional view).

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

Fig. 3 is the structural representation that the utility model is equipped with Plastic Rolling Molds.

The specific embodiment

Below in conjunction with above-mentioned accompanying drawing and adopt specific embodiment that the utility model is described in detail again.

Such as Fig. 1 ~ shown in Figure 3,1. guide rail, 2. move vehicle frame, 3. bearing block, 4. spindle motor, 5. main shaft, 6. gear drive syndeton, 7. countershaft, 8. chain transmission connecting structure, 9.L arm, 91. perpendicular arms, 92. counterweights, 93. horizontal outer arms, 94. horizontal inner arms, 10. countershaft motor, 11. mandrels, 12. dish gears, 13. arm heads, 14. Plastic Rolling Molds.

Rotational molding machine high pulling torque L arm such as Fig. 1, shown in Figure 3, is a kind of working arm structure that adopts on the rotational molding machine that plastic powder makes the hollow rotomoulded articles.

Described rotational molding machine high pulling torque L arm comprises the mobile vehicle frame 2 of a tower structure, and this moves vehicle frame and is arranged on the ground guide 1 by the bottom pulley slippage, and is provided with baking oven in the guide rail terminal, so mobile vehicle frame can carry out work into and out of baking oven along guide rail 1 slippage.

Described mobile vehicle frame 2 tops are equipped with two bearing blocks 3, be respectively equipped with bearing in these two bearing blocks, on the bearing of a described main shaft 5 two ends difference rotating support in two bearing blocks 3, this main shaft 5 also is provided with countershaft 7 to an end of mobile vehicle frame 2 extensions; Described countershaft is arranged on outside the main shaft 5, so main shaft at interior, countershaft 7 outside, and also is provided with the bearing of the supporting that rotates between countershaft and main shaft 5.

Be provided with spindle motor 4 and countershaft motor 10 in the described mobile vehicle frame 2, be provided with gear drive syndeton 6 between this spindle motor and main shaft 5 inputs, so but spindle motor 4 is worked drive shaft 5 in bearing block 3 interior rotations; Also be provided with chain transmission connecting structure 8 between this countershaft motor 10 and countershaft 7 inputs, rotate relative to main shaft 5 so the countershaft machine operation can drive countershaft.

The output of described main shaft 5 and countershaft 7 all is connected on the L arm 9, and this L arm comprises the counterweight 92 of perpendicular arm 91, perpendicular arm one end and be vertically connected on horizontal outer arm 93 and the horizontal inner arm 94 of the perpendicular arm other end that this horizontal inner arm rotates with bearing and is bearing in the horizontal outer arm; Described perpendicular arm 91 connects fixing with main shaft 5 outputs; Be provided with the chain transmission connecting structure 8 that is used as power and transmits between described horizontal inner arm 94 inputs and countershaft 7 outputs; Described horizontal outer arm 93 outputs are provided with the arm head 13 that screw is connected and fixed, and are provided with in this arm head as shown in Figure 2 and make the mandrel 11 that supporting is rotated with bearing, and this mandrel and horizontal outer arm 93 are the at right angle setting relation; Described mandrel 11 1 ends are provided with dish gear 12, on this dish gear Plastic Rolling Molds 14 are installed; Described horizontal inner arm 94 outputs also are provided with the fixing dish gear 12 of screw, the transmission that is meshed and is used as power of the dish gear on this horizontal inner arm and the dish gear of mandrel 11 1 ends.

Main shaft 5 of the present utility model is interior, countershaft 7 has greatly made things convenient for the improvement of countershaft upper sprocket wheel at external structure, it can increase sprocket diameter according to the actual use needs of rotational molding machine, increase teeth number of sprocket, the corresponding output torque that also strengthens L arm 9, so more can be applicable to carry out on the massive rotationally moulded machine processing of massive rotationally moulded products, its working method is as follows: mobile vehicle frame 2 can enter in the baking oven along guide rail 1 and heat, spindle motor 4 rotates by gear drive syndeton 6 drive shaft 5 simultaneously, and then drive L arm 9 is finished 360 ° of rotations of X-axis around the axial line of main shaft 5, countershaft motor 10 drives countershaft 7 by chain transmission connecting structure 8 and rotates, and then drive horizontal inner arm 94 rotations by chain transmission connecting structure 8 again, finish at last 360 ° of rotations of Y-axis around the axial line of mandrel with moving mandrel 11 by the dish gear 12 that is meshed, this moment, Plastic Rolling Molds 14 will participate in the rotation of X-axis and Y-axis simultaneously, so that Plastic Rolling Molds is heated in baking oven is more even.

Claims

1. rotational molding machine high pulling torque L arm, comprise that slippage is arranged on the mobile vehicle frame (2) on the ground guide (1), this locomotive top of the trellis is equipped with main shaft (5) and countershaft (7), mobile vehicle frame (2) is provided with the spindle motor (4) of drive shaft (5) rotation and drives the countershaft motor (10) that countershaft (7) rotates, the output of described main shaft (5) and countershaft (7) all is connected on the L arm (9), it is characterized in that described countershaft (7) is installed in outside the main shaft (5), be provided with the bearing of the supporting that rotates between this countershaft (7) and the main shaft (5); Be provided with the chain transmission connecting structure (8) that is used as power and transmits between described countershaft motor (10) and the countershaft (7).

2. rotational molding machine high pulling torque L arm according to claim 1, it is characterized in that described L arm (9) comprises perpendicular arm (91), counterweight (92) and is vertically connected on horizontal outer arm (93) and the horizontal inner arm (94) that erects on the arm, this horizontal inner arm (94) rotates with bearing and is bearing in the horizontal outer arm (93); Described main shaft (5) output is connected on the perpendicular arm (91) of L arm (9); Be provided with the chain transmission connecting structure (8) that is used as power and transmits between described countershaft (7) and the horizontal inner arm (94); Described horizontal outer arm (93) output is provided with arm head (13), be provided with the mandrel (11) with the bearing supporting in this arm head, be respectively equipped with engagement between this mandrel one end and horizontal inner arm (94) output and the dish gear (12) of the transmission that is used as power, and at the dish gear of mandrel (11) Plastic Rolling Molds (14) be installed.

3. rotational molding machine high pulling torque L arm according to claim 1 and 2 is characterized in that being provided with gear drive syndeton (6) between described spindle motor (4) and the main shaft (5).