Two-axis connection device

Abstract

The invention discloses a two-axis connection device, including a left and right coaxial shaft seat and a shaft sleeve, a bearing seat sleeve is welded in the bearing hole of the left end of the shaft sleeve, a rolling bearing is installed in the bearing seat sleeve, and a guide sleeve is installed in the rolling bearing; the shaft body of the shaft seat penetrates and cooperates with the guide sleeve to the right, and at least three radial "T"-shaped grooves evenly distributed in the circumference are opened on the right end surface of the shaft body, and a "T"-shaped slider is slidably installed in each "T"-shaped groove, and a telescopic rod installed in a sliding sleeve or a linear bearing is arranged in the shaft hole of the shaft body, and the right end of the telescopic rod is connected to each "T"-shaped slider outside the shaft hole through a radial opening and closing mechanism, and the left end of the telescopic rod is connected to an axial telescopic mechanism arranged in the shaft hole; under the drive of the axial telescopic mechanism, the telescopic rods moving left and right drive each "T"-shaped slider to shrink and open synchronously through the radial opening and closing mechanism. The invention connects the two shafts and rotates together, and no relative displacement is generated when thrust is applied to each other, and the two shafts can be separated quickly.

Description

Technical Field

[0001] The invention relates to a shaft connection mechanism, in particular to a two-shaft connection device. Background Art

[0002] Traditional tire building machines have forward and reverse packing devices on both sides of the building drum driven by oil cylinders. One side of the forward and reverse packing device is installed on the main shaft box of the building drum, and the other side is installed on the tailstock. The building drum is supported by the tailstock. The main shaft box and tailstock of the building drum are positioned with locating pins to prevent displacement during forward and reverse packing.

[0003] The forming drum and the positive and negative packing device are installed on the same shaft. The positive and negative packing on this side is equivalent to the internal force, and the tailstock will not be displaced. The tailstock shaft and the forming drum shaft are two parts, and there is no axial positioning between them. The huge thrust generated by the oil cylinder during the positive and negative packing on the tailstock side will cause a huge force on the positioning pin on the headstock side of the forming drum.

[0004] There is a height difference of about 1.5 meters between the locating pin on the main shaft box side of the forming drum and the forming drum shaft, which will form a 1.5-meter force arm, which is equivalent to amplifying the force on the locating pin by 1.5 times. After on-site testing, the forming machine that has been used for one year has a displacement of 16mm, and there is also a displacement of 6mm after re-fixing the locating pin.

[0005] Therefore, when the forward and reverse packing device is working, the huge thrust of the hydraulic cylinder causes the positioning pin to loosen easily and the spindle box to deform, which affects the accuracy of the equipment and has an adverse effect on the manufacturing quality of the tire. Summary of the invention

[0006] In view of the deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a two-shaft connection device that can realize the two shafts being able to lock each other, rotate with each other, and be separated conveniently and quickly.

[0007] The two-axis connection device capable of solving the above technical problems comprises a left and a right coaxial shaft seat and a shaft sleeve, the difference being that:

[0008] 1. A bearing seat sleeve is welded in the bearing hole at the left end of the shaft sleeve, a rolling bearing is installed in the bearing seat sleeve, and a guide sleeve is installed in the rolling bearing.

[0009] 2. The shaft body of the shaft seat penetrates to the right and fits into the guide sleeve. The right end surface of the shaft body is provided with at least three radial "T"-shaped grooves evenly distributed around the circumference, and a "T"-shaped slider is slidably installed in each "T"-shaped groove.

[0010] 3. A telescopic rod installed in a sliding sleeve or a linear bearing is provided in the axial hole of the shaft body. The right end of the telescopic rod is connected to each "T"-shaped slider through a radial opening and closing mechanism outside the axial hole, and the left end of the telescopic rod is connected to an axial telescopic mechanism provided in the axial hole.

[0011] 4. Driven by the axial telescopic mechanism, the telescopic rods moving left and right drive the "T"-shaped sliders to shrink and open synchronously through the radial opening and closing mechanism.

[0012] When the "T"-shaped sliding blocks are synchronously contracted to a size smaller than the inner diameter of the guide sleeve, the shaft body of the shaft seat can be separated from the guide sleeve, i.e., the shaft sleeve.

[0013] When each "T"-shaped sliding block is synchronously opened onto the guide sleeve, the shaft body of the shaft seat can be connected with the guide sleeve, that is, the shaft sleeve, to drive the guide sleeve to rotate.

[0014] One structure of the radial opening and closing mechanism includes connecting rods corresponding to each "T"-shaped slider, the inner end of each connecting rod is hinged to the right end of the telescopic rod, and the outer end of each connecting rod is hinged to the corresponding "T"-shaped slider.

[0015] One structure of the axial telescopic mechanism includes an opening and closing cylinder installed through a cylinder seat, and a cylinder rod of the opening and closing cylinder extending to the right is connected to the left end of the telescopic rod.

[0016] The application mode of the present invention on the molding machine is as follows: the shaft seat is installed on the molding drum main shaft of the molding machine, and the shaft sleeve is installed on the tail seat of the molding machine.

[0017] Beneficial effects of the present invention:

[0018] 1. The two-shaft connecting device of the present invention can rotate together after connecting the two shafts, but no relative displacement occurs when thrust is applied to each other, and the two shafts can be separated quickly.

[0019] 2. In the structure of the present invention, the two shafts can be locked with each other and can rotate with each other, and the separation is convenient and quick.

[0020] 3. In the structure of the present invention, the "T"-shaped slider has a short stroke and a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an implementation mode of the present invention.

[0022] Figure number identification: 1. Shaft seat; 2. Shaft sleeve; 3. "T"-shaped slider; 4. Telescopic rod; 5. Connecting rod; 6. Bearing seat sleeve; 7. Rolling bearing; 8. Guide sleeve; 9. Cylinder seat; 10. Opening and closing cylinder; 11. Linear bearing; 12. Travel switch; 13. Fork-shaped connecting rod; 14. Bracket. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0024] The two-shaft connecting device of the present invention comprises a left and a right coaxial shaft seat 1 and a shaft sleeve 2, wherein the shaft seat 1 is installed on the main shaft of the forming drum of the forming machine, and the shaft sleeve 2 is installed on the tailstock of the forming machine.

[0025] The shaft seat 1 includes a shaft body and a flange seat at the left end of the shaft body. The shaft hole of the shaft seat 1 is divided into three sections of left, middle and right inner holes. The middle inner hole is a bearing hole equipped with a linear bearing 11. An opening and closing cylinder 10 is installed in the inner hole at the left end through a cylinder seat 9. A telescopic rod 4 is slidably installed in the linear bearing 11. The left end of the telescopic rod 4 is connected to the cylinder rod of the opening and closing cylinder 10 extending to the right through a fork-shaped connecting rod 13 in the inner hole at the left end. The right end of the telescopic rod 4 extends out of the inner hole at the right end, and a ring seat is coaxially installed on the extended shaft end; a "T"-shaped slide groove evenly distributed around the circumference is provided on the right end surface of the shaft body of the shaft seat 1, and a "T"-shaped slider 3 is slidably installed in each "T"-shaped slide groove. Connecting rods 5 corresponding to each "T"-shaped slider 3 are also evenly distributed around the circumference. The inner end of each connecting rod 5 is hinged to the corresponding position of the ring seat at the right end of the telescopic rod 4, and the outer end of each connecting rod 5 is hinged on the corresponding "T"-shaped slider 3, such as Figure 1 shown.

[0026] In the above structure, the extension and retraction of the cylinder rod of the opening and closing cylinder 10 drives the telescopic rod 4 to move left and right. The rightward movement of the telescopic rod 4 radially contracts the "T"-shaped slider 3 through the connecting rod 5, and the leftward movement of the telescopic rod 4 radially opens the "T"-shaped slider 3 through the connecting rod 5.

[0027] A bearing sleeve 6 is welded in the bearing hole at the left end of the shaft sleeve 2, and a rolling bearing 7 is installed in the bearing sleeve 6. The axial limit of the rolling bearing 7 is located at the bottom of the sleeve hole of the left end cover and the bearing sleeve 6. A guide sleeve 8 is installed in the rolling bearing 7. The left end of the guide sleeve 8 is hooked and limited on the left end of the rolling bearing 7, and the right end of the guide sleeve 8 is limited on the right end of the rolling bearing 7 through the right pressure cover; a travel switch 12 is provided in the sleeve hole of the shaft sleeve 2 (on the right side of the bearing hole), and the travel switch 12 is installed on a bracket 14, and the bracket 14 is installed on the bearing sleeve 6, as shown in FIG. Figure 1 shown.

[0028] The operation mode of the present invention is:

[0029] 1. The cylinder rod of the opening and closing cylinder 10 drives the telescopic rod 4 to move rightward, and the telescopic rod 4 drives the "T"-shaped sliders 3 evenly distributed around the circumference to shrink, so that the shrinkage diameter is smaller than the shaft body diameter of the shaft seat 1, that is, smaller than the inner diameter of the sleeve hole of the guide sleeve 8.

[0030] 2. The tailstock moves toward the main shaft of the forming drum, and the shaft body of the shaft seat 1 slides with the guide sleeve 8 and enters the sleeve hole of the shaft sleeve 2. The ring seat at the right end of the telescopic rod 4 touches the travel switch 12, and the travel switch 12 instructs the tailstock to stop in place. The in-place position is that the "T"-shaped sliders 3 evenly distributed around the circumference are flush with the right gland.

[0031] 3. The cylinder rod of the opening and closing cylinder 10 drives the telescopic rod 4 to move leftward, and the telescopic rod 4 drives the "T"-shaped sliders 3 evenly distributed around the circumference to open, and the "T"-shaped sliders 3 evenly distributed around the circumference move outward along the "T"-shaped slide groove and get stuck on the right gland.

[0032] 4. When the positive and negative packing starts, the main shaft of the forming drum drives the guide sleeve 8 to rotate through the shaft body of the shaft seat 1. The axial thrust generated on the tailstock side during the positive and negative packing is offset by the "T"-shaped slider 3, and is no longer transmitted to the forming drum spindle box and its positioning pins through the main shaft of the forming drum.

[0033] 5. After the forward and reverse packing is completed, the cylinder rod of the opening and closing cylinder 10 drives the telescopic rod 4 to move to the right, and the telescopic rod 4 drives the "T"-shaped sliders 3 evenly distributed around the circumference to shrink and return to their original positions, and the tailstock moves away from the main shaft of the forming drum, and the shaft body of the shaft seat 1 is separated from the guide sleeve 8 to achieve rapid separation.

Claims

1. A two-shaft connecting device, comprising a left and a right coaxial shaft seat (1) and a shaft sleeve (2), characterized in that: A bearing seat sleeve (6) is welded in the bearing hole at the left end of the shaft sleeve (2), a rolling bearing (7) is installed in the bearing seat sleeve (6), and a guide sleeve (8) is installed in the rolling bearing (7); the shaft body of the shaft seat (1) penetrates the guide sleeve (8) to the right, and at least three radial "T"-shaped grooves evenly distributed around the circumference are opened on the right end surface of the shaft body, and a "T"-shaped slider (3) is slidably installed in each "T"-shaped groove, and a telescopic rod (4) installed in a sliding sleeve or a linear bearing (11) is arranged in the shaft hole of the shaft body, and the right end of the telescopic rod (4) is connected to each "T"-shaped slider (3) outside the shaft hole through a radial opening and closing mechanism, and the left end of the telescopic rod (4) is connected to an axial telescopic mechanism arranged in the shaft hole; driven by the axial telescopic mechanism, the telescopic rod (4) moving left and right drives each "T"-shaped slider (3) to shrink and open synchronously through the radial opening and closing mechanism; When each "T"-shaped slider (3) is synchronously contracted to a diameter smaller than the inner diameter of the guide sleeve (8), the shaft body of the shaft seat (1) and the guide sleeve (8), i.e., the shaft sleeve (2), are separated; When each "T"-shaped slide block (3) is synchronously opened onto the guide sleeve (8), the shaft body of the shaft seat (1) and the guide sleeve (8) are connected with the shaft sleeve (2) to drive the guide sleeve (8) to rotate.

2. The two-axis connection device according to claim 1, characterized in that: The radial opening and closing mechanism comprises a connecting rod (5) arranged corresponding to each "T"-shaped slider (3), the inner end of each connecting rod (5) being hinged to the right end of the telescopic rod (4), and the outer end of each connecting rod (5) being hinged to the corresponding "T"-shaped slider (3).

3. The two-axis connection device according to claim 1, characterized in that: The axial telescopic mechanism comprises an opening and closing cylinder (10) installed through a cylinder seat (9), and a cylinder rod of the opening and closing cylinder (10) extending to the right is connected to the left end of the telescopic rod (4).

4. The two-axis connection device according to claim 1, characterized in that: The shaft seat (1) is installed on the main shaft of the molding drum of the molding machine, and the shaft sleeve (2) is installed on the tailstock of the molding machine.

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