Rectangular arm of double-shaft linkage rotational molding machine

Abstract

The utility model provides a rectangular arm of a double-shaft linkage rotational molding machine, which comprises outer driving shafts, outer rectangular arms, inner driving shafts and inner rectangular arms, the outer driving shafts are connected to two ends of the outer rectangular arms, the outer driving shafts are mounted on a rotational molding machine frame through outer driving bearings, the inner rectangular arms are movably mounted in the outer rectangular arms, and the inner rectangular arms are mounted on the outer rectangular arms. An inner driving shaft is movably sleeved with the outer driving shaft, one end of the inner driving shaft is connected with the transfer power unit in the outer rectangular arm, and the other end of the inner driving shaft extends out of the outer driving shaft to be connected with the inner driving gear. After the scheme is adopted, the structure is reasonable, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of roto-molding machines, in particular to a double-axis linked rectangular arm of a roto-molding machine. Background Art

[0002] At present, with the application scope of roto-molding products becoming more and more extensive, higher requirements are put forward for the processing methods of roto-molding machinery. In traditional roto-molding machinery, the rectangular arm structure often involves the need for the inner and outer mold frames to rotate axially and radially at the same time. The traditional method is to install a set of motors on the inner and outer mold frames to drive the corresponding mold frames to operate respectively. This transmission structure occupies a large space and has complex line layout. A double-mode rectangular arm roto-molding machine structure provided in 201220391735.8 can realize the co-rotation of double molds through a set of power, but its inner mold frame adopts a single-end transmission method. When the single-end transmission is used, the mold frame will generate a large torque, causing the inner mold frame to deform, especially the inner mold frame adopts a bevel gear transmission method, the operation stability is poor, and it is easy to cause gear damage. Summary of the invention

[0003] The utility model aims to provide a double-axis linkage rotational molding machine rectangular arm with reasonable structure and good use effect.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a double-axis linkage rotational molding machine rectangular arm, which includes an outer drive shaft and an outer rectangular arm, and it also includes an inner drive shaft and an inner rectangular arm, wherein the outer rectangular arm is connected to the outer drive shaft at both ends, and the outer drive shaft is installed on the rotational molding machine frame through an outer drive bearing, the inner rectangular arm is movably installed in the outer rectangular arm, and the inner drive shaft is movably sleeved in the outer drive shaft, one end of the inner drive shaft is connected to the transfer power unit in the outer rectangular arm, and the other end of the inner drive shaft extends out of the outer drive shaft and is connected to the inner drive gear.

[0005] The transfer power unit includes an inner driving gear box and an inner transfer power shaft, wherein the inner driving gear box is installed in the outer rectangular arm, the output shaft of the inner driving gear box is connected to the inner rectangular arm, the input shaft of the inner driving gear box is connected to one end of the inner transfer power shaft, the other end of the inner transfer power shaft is connected to an inner driven sprocket, the outer driving shaft is cylindrical, the inner driving shaft is movably mounted in the outer driving shaft, one end of the inner driving shaft is connected to an inner driving sprocket, and the inner driving sprocket and the inner driven sprocket are connected by a transmission chain.

[0006] The inner transfer power shaft is installed in the outer rectangular arm through a transfer bearing.

[0007] The center line of the output shaft of the inner drive gear box and the center line of the outer drive shaft are in a "cross" shape when viewed from top.

[0008] One end of the outer driving shaft is fixedly connected to the outer rectangular arm, and the other end of the outer driving shaft passes through the outer driving bearing and is connected to the outer driving gear.

[0009] After the utility model adopts the above scheme, the outer driving gear is driven to rotate by the external motor, the outer driving gear synchronously drives the outer driving shaft to rotate, the outer driving shaft drives the outer rectangular arm (longitudinal) to rotate, and the inner driving shaft is sleeved in the outer driving shaft, thereby reducing the volume required for installation, the inner driving shaft is driven to operate by the inner driving gear, the inner driving shaft synchronously drives the inner driving sprocket to rotate, the inner driving sprocket drives the inner driven sprocket through the chain, the inner driven sprocket drives the inner driving shaft to rotate, and the inner driving shaft drives the inner driving gear box to rotate. By adjusting the rotation speed and the running direction of the inner driving gear box, the rotation mode of the inner rectangular arm can be adjusted to realize forward / reverse conversion. At the same time, the inner rectangular arm adopts synchronous rotation at both ends to prevent the inner rectangular arm from generating torque during operation and protect the inner rectangular arm. The structure after adopting this scheme is reasonable and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0011] The present invention is further described below in conjunction with all the accompanying drawings. The preferred embodiments of the present invention are as follows:

[0012] The embodiments described in this embodiment with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be understood as limiting this patent.

[0013] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0014] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0015] See attached Figure 1The double-axis linkage rotational molding machine rectangular arm described in this embodiment includes an outer driving shaft 1, an outer rectangular arm 3, an inner driving shaft 2, and an inner rectangular arm 4, wherein the outer driving shaft 1 is connected to both ends of the outer rectangular arm 3, and the outer driving shaft 1 is installed on the rotational molding machine frame through an outer driving bearing 6. The inner rectangular arm 4 is movably installed in the outer rectangular arm 3, and the inner driving shaft 2 is movably sleeved in the outer driving shaft 1. One end of the inner driving shaft 2 is connected to the transfer power unit in the outer rectangular arm 3, and the other end of the inner driving shaft 2 extends out of the outer driving shaft 1 and is connected to the inner driving gear 7.

[0016] The transfer power unit includes an inner drive gearbox 9 and an inner transfer power shaft 10, wherein the inner drive gearbox 9 is installed in the outer rectangular arm 3, the output shaft of the inner drive gearbox 9 is connected to the inner rectangular arm 4, the input shaft of the inner drive gearbox 9 is connected to one end of the inner transfer power shaft 10, the other end of the inner transfer power shaft 10 is connected to an inner driven sprocket 11, the outer drive shaft 1 is cylindrical, the inner drive shaft 2 is movably sleeved in the outer drive shaft 1, one end of the inner drive shaft 2 is connected to an inner driving sprocket 12, and the inner driving sprocket 12 and the inner driven sprocket 11 are connected through a transmission chain; the inner transfer power shaft 10 is installed in the outer rectangular arm 3 through a transfer bearing. The center line of the output shaft of the inner drive gearbox 9 and the center line of the outer drive shaft 1 are in a "cross" shape when viewed from above. One end of the outer drive shaft 1 is fixedly connected to the outer rectangular arm 3, and the other end of the outer drive shaft 1 is connected to the outer drive gear 8 after passing through the outer drive bearing 6.

[0017] After adopting the above scheme, the outer driving gear is driven to rotate by the external motor, the outer driving gear synchronously drives the outer driving shaft to rotate, the outer driving shaft drives the outer rectangular arm (longitudinal) to rotate, and the inner driving shaft is sleeved in the outer driving shaft, thereby reducing the volume required for installation, and the inner driving shaft is driven to rotate by the inner driving gear, the inner driving shaft synchronously drives the inner driving sprocket to rotate, the inner driving sprocket drives the inner driven sprocket through the chain, the inner driven sprocket drives the inner driving shaft to rotate, and the inner driving shaft drives the inner driving gear box to rotate. By adjusting the speed and running direction of the inner driving gear box, the rotation mode of the inner rectangular arm can be adjusted to realize forward / reverse conversion. At the same time, the inner rectangular arm adopts synchronous rotation at both ends to prevent the inner rectangular arm from generating torque during operation, thereby protecting the inner rectangular arm.

[0018] The embodiments described above are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, all changes made based on the shape and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rectangular arm of a double-axis linkage rotational molding machine, comprising an outer drive shaft (1) and an outer rectangular arm (3), characterized in that: The invention also comprises an inner driving shaft (2) and an inner rectangular arm (4), wherein the outer driving shaft (1) is connected to both ends of the outer rectangular arm (3), the outer driving shaft (1) is mounted on a frame of a rotational molding machine via an outer driving bearing (6), the inner rectangular arm (4) is movably mounted inside the outer rectangular arm (3), the inner driving shaft (2) is movably sleeved inside the outer driving shaft (1), one end of the inner driving shaft (2) is connected to a transfer power unit inside the outer rectangular arm (3), and the other end of the inner driving shaft (2) extends out of the outer driving shaft (1) and is connected to an inner driving gear (7).

2. A rectangular arm of a double-axis linkage rotational molding machine according to claim 1, characterized in that: The transfer power unit comprises an inner driving gear box (9) and an inner transfer power shaft (10), wherein the inner driving gear box (9) is installed in the outer rectangular arm (3), the output shaft of the inner driving gear box (9) is connected to the inner rectangular arm (4), the input shaft of the inner driving gear box (9) is connected to one end of the inner transfer power shaft (10), the other end of the inner transfer power shaft (10) is connected to an inner driven sprocket (11), the outer driving shaft (1) is cylindrical, the inner driving shaft (2) is movably sleeved in the outer driving shaft (1), one end of the inner driving shaft (2) is connected to an inner driving sprocket (12), and the inner driving sprocket (12) and the inner driven sprocket (11) are connected via a transmission chain.

3. A rectangular arm of a double-axis linkage rotational molding machine according to claim 1, characterized in that: The inner transfer power shaft (10) is installed in the outer rectangular arm (3) via a transfer bearing.

4. A rectangular arm of a double-axis linkage rotational molding machine according to claim 1, characterized in that: The center line of the output shaft of the inner drive gear box (9) and the center line of the outer drive shaft (1) are in a "cross" shape when viewed from above.

5. A rectangular arm of a double-axis linkage rotational molding machine according to claim 1, characterized in that: One end of the external drive shaft (1) is fixedly connected to the external rectangular arm (3), and the other end of the external drive shaft (1) passes through the external drive bearing (6) and is connected to the external drive gear (8).

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