A sleeve quick change device

Abstract

The invention discloses a sleeve quick-change device, comprising a support, a stop sleeve, a sliding sleeve, a central shaft, a sleeve fastening device, and a cylinder; the sliding sleeve is arranged in the stop sleeve, the interior of the sliding sleeve comprises an inclined wedge portion, the central shaft is slidably connected with the sliding sleeve, the outer sleeve of the central shaft is provided with a spring, the bottom of the central shaft is provided with a mounting groove, the side of the central shaft is provided with a first limit slot, and a limit member is provided in the mounting groove; the piston rod in the cylinder is fixed with the sleeve fastening device, the sleeve fastening device comprises a driving head and a sleeve, the bottom end of the driving head is fixed with the sleeve, the top end of the driving head is provided with a second limit slot, after the sleeve is replaced, the top end of the driving head is inserted into the mounting groove, and the limit member is connected to the sliding sleeve, the first limit slot and the second limit slot to lock the driving head and the central shaft. The invention can realize the operation of quickly replacing the sleeve, greatly save the labor replacement cost, improve the efficiency of the operation, and has a simple structural design and is fast and convenient to operate.

Description

Technical Field

[0001] The invention belongs to the field of assembly of engines and gearboxes, and in particular relates to a sleeve quick-change device. Background Art

[0002] When assembling engines and gearboxes, robots are often used to tighten the bolts on the products due to the need for flexibility. However, due to the need for product diversification, it is usually necessary to tighten the bolts of different products at the same station. Different specifications of bolts require different sockets. The existing socket replacement device has a complex structure, so the existing socket replacement device usually requires a lot of manpower to complete the socket replacement, and its operating efficiency is low. With the customer's product diversification and high efficiency and reliability requirements, the existing socket replacement equipment can no longer meet the existing needs. Therefore, finding a device that can quickly replace bolt sockets has become a problem that technicians in this field urgently need to solve. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a sleeve quick-change device, which solves the technical problems of complex sleeve replacement equipment, high labor cost and low operating efficiency in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a sleeve quick-change device, characterized in that it includes a support, a stop sleeve, a sliding sleeve, a central shaft, a sleeve fastening device, and a cylinder; the stop sleeve is fixed to the support, the sliding sleeve is fixedly arranged in the stop sleeve, the interior of the sliding sleeve includes an inclined wedge portion, the central shaft is slidably connected with the sliding sleeve, the outer sleeve of the central shaft is provided with a spring, the two ends of the spring respectively abut against the central shaft and the sliding sleeve, the bottom of the central shaft is provided with a mounting groove, the side of the central shaft located at the mounting groove is provided with a first limiting groove, and a limiting member is provided in the mounting groove; the piston rod in the cylinder is fixed to the sleeve fastening device, the sleeve fastening device includes a driving head and a sleeve, the bottom end of the driving head is fixed to the sleeve, the top end of the driving head is provided with a second limiting groove, after the sleeve is replaced, the top end of the driving head is inserted into the mounting groove, and the limiting member is connected to the sliding sleeve, the first limiting groove and the second limiting groove to lock the driving head and the central shaft.

[0005] Preferably, the limiting member is a steel ball, and the second limiting slot is an arc-shaped slot structure matching the shape of the steel ball.

[0006] Preferably, the interior of the sliding sleeve also includes a spring limiting portion, a first equal-diameter portion and a second equal-diameter portion, the spring limiting portion is located above the first equal-diameter portion, and the diameter of the spring limiting portion is greater than the diameter of the first equal-diameter portion, the first equal-diameter portion is located above the inclined wedge portion, the second equal-diameter portion is located below the inclined wedge portion, and the diameter of the first equal-diameter portion is smaller than the diameter of the second equal-diameter portion.

[0007] Preferably, a limiting screw mounting hole is provided on one side of the sliding sleeve, and a limiting slot is provided in the longitudinal direction of the central axis at a position corresponding to the position of the limiting screw mounting hole, and the limiting screw moves in the limiting slot after being fixed in the limiting screw mounting hole.

[0008] Preferably, the cylinder comprises a clamping cylinder and a push-pull cylinder, the piston rod in the clamping cylinder is fixed to the driving head, and the piston rod in the push-pull cylinder is fixed to the sleeve.

[0009] Further preferably, a positioning bolt is provided below the sleeve.

[0010] Beneficial effects of the invention: The invention discloses a sleeve quick-change device. Since an inclined wedge portion is provided in the sleeve, the sleeve can release or limit the lateral movement of the limiter during the up and down sliding process, thereby realizing the separation or locking of the sleeve fixing mechanism and the central axis. The invention can realize the operation of quickly replacing the sleeve, greatly save the labor replacement cost, and improve the efficiency of the operation. Its structural design is simple and the operation is fast and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the sleeve quick-change device;

[0012] Figure 2 An enlarged view of the connection structure of the stop sleeve, the sliding sleeve, the middle shaft, and the driving head;

[0013] Figure 3 is a longitudinal cross-sectional view of the sleeve;

[0014] Figure 4 is a longitudinal section of the central axis;

[0015] Figure 5 It is a schematic diagram of the structure of the drive head;

[0016] The reference numerals in the figure are: 1-support; 2-stop sleeve; 3-sliding sleeve, 3.1-limit screw mounting hole, 3.2-spring limiting portion, 3.3-first equal-diameter portion, 3.4-wedge portion, 3.5-second equal-diameter portion; 4-central axis, 4.1-limiting groove, 4.2-protruding portion, 4.3-mounting groove, 4.4-first limiting slot; 5-driving head, 5.1-second limiting slot; 6-sleeve; 7-clamping cylinder; 8-push-pull cylinder; 9-spring; 10-limiting member; 11-positioning bolt. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1:

[0019] A sleeve quick-change device, such as Figures 1 to 5 As shown, it includes a support 1, a stop sleeve 2 for limiting the movement of the sliding sleeve, a sliding sleeve 3, a central axis 4, a sleeve fastening device, and a cylinder. The sleeve fastening device includes a driving head 5 and a sleeve 6. The bottom end of the driving head 5 is fixed to the sleeve 6; the cylinder includes a clamping cylinder 7 and a push-pull cylinder 8. Among them, the stop sleeve 2 is fixed to the support 1 by bolts. The sliding sleeve 3 is arranged in the stop sleeve 2, and the sliding sleeve 3 is slidably connected to the stop sleeve 2. In this embodiment, a limiting screw mounting hole 3.1 is provided on one side of the outer side of the sliding sleeve 3, and a limiting groove 4.1 is provided in the longitudinal direction of the central axis 4 corresponding to the position of the limiting screw mounting hole. The limiting screw is fixed in the limiting screw mounting hole 3.1 and one end of the limiting screw extends to the limiting groove 4.1. When the sliding sleeve 3 moves longitudinally along the central axis 4, the limiting screw moves back and forth in the limiting groove 4.1 to limit the sliding distance of the sliding sleeve on the central axis. As shown Figure 3 As shown, the interior of the sliding sleeve 3 includes a spring limit portion 3.2, a first equal diameter portion 3.3, an inclined wedge portion 3.4, and a second equal diameter portion 3.5 from top to bottom. The spring limit portion 3.2 is located above the first equal diameter portion 3.3, and the diameter of the spring limit portion 3.2 is greater than the diameter of the first equal diameter portion 3.3. The first equal diameter portion 3.3 is located above the inclined wedge portion 3.4. The second equal diameter portion 3.5 is located below the inclined wedge portion 3.4, and the diameter of the first equal diameter portion 3.3 is smaller than the diameter of the second equal diameter portion 3.5. The central axis 4 is disposed in the sliding sleeve 3 and is slidably connected to the sliding sleeve 3. As shown in FIG. Figure 4 As shown, the outer sleeve of the central axis 4 is provided with a spring 9, and the top of the central axis 4 is provided with a protrusion 4.2. One end of the spring 9 abuts against the protrusion 4.2 at the top of the central axis, and the other end of the spring 9 abuts against the spring limiter 3.2 of the sliding sleeve. The central axis 4 passes through the spring limiter 3.2, the first equal diameter portion 3.3, and the inclined wedge portion 3.4 and then enters the second equal diameter portion 3.5. The bottom of the central axis 4 is provided with a mounting groove 4.3, and a limiting member 10 is provided in the mounting groove 4.3. In this embodiment, the limiting member 10 is a steel ball. The side of the central axis 4 located at the mounting groove 4.3 is provided with a first limiting groove 4.4, and the diameter of the first limiting groove 4.4 is equal to the diameter of the steel ball. The limiting member 10 can move in the mounting groove 4.3 and the first limiting groove 4.4. The piston rod in the clamping cylinder 7 is fixed to the driving head 5, and the piston rod in the push-pull cylinder 8 is fixed to the sleeve 6. A positioning bolt 11 is provided below the sleeve 6. Figure 5As shown, the top of the driving head 5 is provided with a second limit slot 5.1, which is an arc-shaped slot structure matching the shape of the steel ball. After replacing the sleeve, the top of the driving head 5 is inserted into the mounting slot 4.3, and the limit member 10 is engaged with the sliding sleeve 3, the first limit slot 4.4 and the second limit slot 5.1 to lock the driving head 5 and the central shaft 4.

[0020] The operation of automatic sleeve replacement is as follows:

[0021] When installing the sleeve, first fix the drive head 5 and the sleeve 6, clamp the drive head 5 with the clamping cylinder 7, push the sleeve 3 upward, the sleeve 3 compresses the spring 9 so that the inclined wedge portion 3.4 in the sleeve 3 is located at the upper part of the first limit slot 4.4 of the central axis 4, and insert the top of the drive head 5 into the installation slot 4.3 of the central axis 4 with the push-pull cylinder 8, and the steel ball is pushed and slides into the first limit slot 4.4 and the second limit slot 5.1. Release the sleeve 3, the compressed spring 9 pushes the sleeve 3 to move downward, the inclined wedge portion 3.4 of the sleeve 3 squeezes the steel ball, thereby limiting the steel ball in the first limit slot 4.4 and the second limit slot 5.1, and the steel ball locks the drive head 5 and the central axis 4, completing the installation of the sleeve.

[0022] When the sleeve is unloaded, the sleeve 3 is first pushed, and the sleeve 3 compresses the spring 9 so that the wedge portion 3.4 in the sleeve 3 is located above the steel ball, thereby releasing the lateral movement of the steel ball. The drive head 5 is removed from the central shaft 4 by the push-pull cylinder 8 to complete the sleeve unloading.

[0023] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A sleeve quick-change device, characterized in that: The cam is provided with a plurality of springs, each of which is provided with a plurality of springs, and the plurality of springs are provided with a plurality of springs, each of which is provided with a plurality of springs, and the plurality of springs are provided with a plurality of springs. The cylinder includes a clamping cylinder and a push-pull cylinder. The piston rod in the clamping cylinder is fixed to the driving head, and the piston rod in the push-pull cylinder is fixed to the sleeve. When installing the sleeve, first fix the drive head and the sleeve, clamp the drive head with the clamping cylinder, push the sleeve upward, and the sleeve compresses the spring so that the inclined wedge part in the sleeve is located at the upper part of the first limit slot of the central axis. Insert the top end of the drive head into the installation slot of the central axis by using the push-pull cylinder, and the steel ball is pushed and slides into the first limit slot and the second limit slot; loosen the sleeve, and the compressed spring pushes the sleeve to move downward, and the inclined wedge part of the sleeve squeezes the steel ball, thereby limiting the steel ball in the first limit slot and the second limit slot. The steel ball locks the drive head and the central axis, and the sleeve installation is completed; When the sleeve is unloaded, the sleeve is pushed first. The sleeve compresses the spring so that the wedge in the sleeve is located above the steel ball, releasing the lateral movement of the steel ball. The push-pull cylinder is used to remove the drive head from the central axis to complete the sleeve unloading. The limiting member is a steel ball, and the second limiting slot is an arc-shaped slot structure matching the shape of the steel ball. The interior of the sliding sleeve also includes a spring limiting portion, a first equal-diameter portion and a second equal-diameter portion, the spring limiting portion is located above the first equal-diameter portion, and the diameter of the spring limiting portion is greater than the diameter of the first equal-diameter portion, the first equal-diameter portion is located above the inclined wedge portion, the second equal-diameter portion is located below the inclined wedge portion, and the diameter of the first equal-diameter portion is smaller than the diameter of the second equal-diameter portion.

2. A sleeve quick-change device according to claim 1, characterized in that: A limiting screw mounting hole is arranged on one side of the sliding sleeve, and a limiting slot is arranged in the longitudinal direction of the central axis at a position corresponding to the position of the limiting screw mounting hole. The limiting screw moves in the limiting slot after being fixed in the limiting screw mounting hole.

3. The sleeve quick-change device according to claim 1, characterized in that: A positioning bolt is arranged below the sleeve.

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