CN201148486Y - Five-axis parallel drafting machine - Google Patents

Abstract

The utility model discloses a five-axis parallel drafting machine for pulling and stretching polymer materials such as nylon, which comprises a fuselage, a transmission shaft, rollers and gears, and each transmission shaft is equipped with corresponding rollers and gears. , there are five identical transmission shafts arranged in parallel on the fuselage in two rows, arranged in a three-up and two-down manner; five gears are located in the inner cavity of the fuselage and installed on the corresponding five transmission shafts, and the five diameters The rollers with different sizes are located at the back of the fuselage and installed on the rear end of the corresponding transmission shaft. The utility model changes the original seven-roller space orthogonal meshing motion transmission into five-axis parallel motion transmission, which is easy to ensure the assembly accuracy requirements. The cost of the drafting machine is about 1/2 to 1/3 of that of the original seven-roller drafting machine; the speed of the drafting machine is low, which reduces the vibration and noise of the equipment; the transmission is stable and the product quality is stable; the process of material stretching movement is guaranteed to be smooth and uninterrupted , the diameter error of the stretched material is small and uniform.

Description

Five-axis parallel drafting machine

technical field

The utility model relates to a drafting machine used for drawing and stretching polymer materials such as nylon. It belongs to the technical field of international patent classification DOLH5/00 "drawing equipment".

Background technique

As shown in Figure 1 and Figure 2, the current drafting machine generally adopts a seven-roller model, which is composed of a fuselage 20, a transmission shaft 21, a helical gear 22 and seven drafting rollers 23. The arrangement mode, the direction of input transmission and traction transmission is vertical, seven coaxial hole systems are divided into seven identical transmission shafts, and a 45° helical gear 22 is housed on each shaft, and another on the fuselage 20 A long shaft is installed, and four 45° helical gears are arranged on the long shaft, which mesh with the helical gears on the seven transmission shafts in space orthogonally. When the power is introduced from one end of the long shaft, the four helical gears on the long shaft are the driving wheels, and the seven helical gears on the transmission shaft are respectively the driven wheels, thus completing the motion transmission. Install seven rollers with the same diameter on the same side of the transmission shaft, and adjust the front and rear drafting machines to rotate at different speeds to drive the stretched material for stretching. The shaft and gear of the drafting machine are all made of 40Cr material, which is finished after quenching and tempering. The disadvantages of the seven-roller drafting machine are high cost and difficult assembly, especially the orthogonal meshing between the long shaft and the gear on the drive shaft is not easy to ensure the assembly accuracy, and it is easy to generate torque caused by center deviation, affecting the smooth transmission of motion and resulting in product quality. unstable.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a five-axis parallel drafting machine with simple and reliable structure and stable transmission.

The technical solution adopted by the utility model is: including the fuselage, transmission shaft, roller and gear, each transmission shaft is equipped with corresponding roller and gear, and five identical transmission shafts are arranged in parallel in two rows on the fuselage The five gears are located in the inner cavity of the fuselage and installed on the corresponding five transmission shafts, and the five rollers with different diameters are located at the back of the fuselage and installed on the corresponding on the rear end of the drive shaft.

After the utility model adopts said scheme, its advantage is:

1. Change the original seven-roller space orthogonal meshing motion transmission to five-axis parallel motion transmission. This structure is easy to ensure the assembly accuracy requirements, and the cost of the drafting machine is greatly reduced, which is about 1/2 to 1/3 of the original seven-roller drafting machine. 3.

2. The gears are made of nodular cast iron, and the diameter of the gear is about 5 times that of the gear on the seven-roll drafting machine. After adopting the five-axis, the vibration and noise of the equipment can be reduced due to the low speed of the drafting machine; and the large diameter of the gear increases the The quality of gears also plays a role in balancing motion, ensuring stable transmission, and stabilizing product quality.

3. Rollers with different diameters are installed on one end of the five shafts, which not only decomposes the drawing effect of the material on the material between the two drafting machines at different speeds between the two transmission shafts of the single drafting machine, but also increases the The pressing force of the stretched material on the roller prevents the stretched material from slipping on the surface of the roller due to insufficient friction, and ensures that the roller does not run idle, thereby ensuring the smooth and uninterrupted stretching process of the material, and obtaining the stretched material. The diameter error is small and uniform.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Fig. 1 is the front structural diagram of prior art seven-roll drafting machine;

Fig. 2 Fig. 1 is in the sectional view of A-A direction;

Fig. 3 is a structural representation of the utility model;

Fig. 4 is the sectional view of Fig. 3 in B-B direction;

Fig. 5 is a view from the direction C of Fig. 4 .

Detailed ways

As shown in Figure 3 and 4, there are five transmission shafts 1-1, 1-2, 1-3, 1-4, 1-5 parallel frames on the fuselage 5, between the fuselage 5 and the transmission shaft Bearing 6 is installed as a support, and bearing end caps 7 are installed on the outside of the bearing respectively. These five transmission shafts are arranged in two rows up and down, three are arranged above, and two are arranged below. The material of transmission shaft 1 is 45 steel quenched and tempered, and the fuselage 5 is cast iron. A corresponding gear is installed on the five transmission shafts 1-1, 1-2, 1-3, 1-4, 1-5, and the corresponding gears are respectively gears 2-1, 2-2, 2- 3, 2-4, 2-5, each gear is a large gear with small helix angle and parallel transmission, the diameter is 312mm, and the gear material is QT60-10.

As shown in Figure 5: on the rear body outside the fuselage 5, the rear ends of the drive shafts 1-1, 1-2, 1-3, 1-4, 1-5 are respectively equipped with corresponding five rollers 3- 1, 3-2, 3-3, 3-4, 3-5, the diameters of the rollers on each transmission shaft are different.

The above-mentioned gear 2-5 is meshed with the gear 2-1 and the gear 2-2 respectively, and the gear 2-4 is meshed with the gear 2-2 and the gear 2-3 respectively. When working, the external power device is connected to the transmission shaft 1-5 where the gear 2-5 and the corresponding roller 3-5 are located, and then transmitted through the gears in sequence, and the transmission sequence is represented by the following arrows: gear 2-5→gear 2-1, gear 2-5→gear 2-2, gear 2-2→gear 2-4, gear 2-4→gear 2-3. During work, the stretched material is first wound on the roller 3-1 corresponding to the gear 2-1, and then passes through the rollers of different diameters on the shafts where the gears 2-5, 2-2, 2-4, and 2-3 are located. The outer diameter of the first roller 3-1 of the transmission is 180mm, the rear rollers are rollers 3-5, 3-2, 3-4, 3-3 in turn, and the outer diameter of the rear rollers is the previous roller 1.03 times the outer diameter of the roller, the material is sent to the next drawing machine after the preliminary drawing is completed in this way.

The entire production line uses 3 drafting machines, each with a traction power of 3KW, and the speed ratios of the front and rear drafting machines are 1:1.75 and 1:2 respectively.

Claims (5)

1. A five-axis parallel drawing machine, comprising a fuselage, a transmission shaft, a roller and a gear, each transmission shaft is equipped with a corresponding roller and a gear, and is characterized in that five identical transmission shafts (1 -1, 1-2, 1-3, 1-4, 1-5) are arranged in parallel on the fuselage (5) in two rows, arranged in a three-up and two-down mode; five gears (2-1, 2 -2, 2-3, 2-4, 2-5) are located in the inner cavity of the fuselage (5) and are installed on the corresponding five transmission shafts, and the five rollers (3-1, 3-2, 3-3, 3-4, 3-5) are located at the rear body of the fuselage (5) and are installed on the corresponding drive shaft rear end. 2. The five-axis parallel drafting machine according to claim 1, characterized in that: the five gears, wherein the gears (2-5) mesh with the gears (2-1) and the gears (2-2) respectively, Gear (2-4) engages gear (2-2) and gear (2-3) respectively, and five gears are all helix angle gears and parallel transmission. 3. The five-axis parallel drafting machine according to claim 1, characterized in that: the five rollers with different diameters, wherein the outer diameter of the first section roller (3-1) of the transmission is 180mm, the rear section rollers are rollers (3-5), (3-2), (3-4), (3-3) in turn, and the outer diameter of the rear section rollers is the outer diameter of the previous section rollers in turn 1.03 times. 4. The five-axis parallel drafting machine according to claim 1 or 2, characterized in that: the diameters of the five gears are all 312mm. 5. The five-axis parallel drafting machine according to claim 1, characterized in that: bearings (6) are installed between the left and right ends of each drive shaft and the fuselage (5).

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