Positioning device for tray rotating mechanism

Abstract

The utility model discloses a positioning device for a tray rotating mechanism, which mainly comprises an air cylinder driving positioning component and a tray rotating component, and a positioning pin shaft of the air cylinder positioning component is matched with a cone of a positioning pin sleeve on the tray rotating component to complete positioning of the tray rotating component. The positioning device of the tray rotating mechanism is additionally arranged, so that the problem that high-precision indexing positioning of the rotating stock bin cannot be realized by a rotating driving product with general precision is solved, and the same function as a rotating driving part with a large speed ratio, high rigidity and high precision selected by the rotating stock bin in the prior art is achieved. The rotary stock bin is reasonable in scheme, simple in structure and easy to implement, the cost of the rotary stock bin is effectively reduced, and the manufacturing period is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical automation technical field, and specifically relates to a positioning device for tray rotating mechanism. BACKGROUND

[0002] Rotary stock bin is the commonly used workpiece storage and conveying equipment in automatic feeding system of machine tool, and the rotary stock bin has multiple stations, such as 6 stations, 8 stations and the like, and the positioning device of the tray rotating mechanism can realize accurate positioning of each station. The mechanical hand responsible for automatic feeding and discharging of the machine tool and the rotary stock bin responsible for workpiece storage and conveying can constitute an automatic feeding system of the machine tool, and the mechanical hand is used for grabbing and discharging materials in the fixed station of the rotary stock bin, and the rotary stock bin is rotated and indexed to provide materials for the mechanical hand.

[0003] In the prior art, for the rotary stock bin with light load capacity, small rotating radius of the rotating disc and high indexing accuracy, the tray rotating mechanism usually selects high-precision cam divider, hollow rotating platform and the like as the rotating driving component to realize high-precision indexing of the fixed station of the rotary stock bin. For the rotary stock bin with heavy load, large rotating radius of the rotating disc and high indexing accuracy, the tray rotating mechanism can only select the rotating driving component with large speed ratio, high precision and high rigidity, such as RV speed reducer and high-precision rotary indexing table. The rotating driving component of the tray rotating mechanism capable of meeting heavy load and high indexing accuracy is expensive, has long delivery cycle, occupies a large part of the cost of the rotary stock bin, and leads to increased cost of the whole equipment and prolonged production cycle. UTILITARY MODEL CONTENTS

[0004] The utility model aims at solving the problems described in the technical background, and provides a new positioning device of tray rotating mechanism, which realizes accurate positioning of the rotary stock bin by using the positioning device of the tray rotating mechanism, and meets the demand of high indexing accuracy of the rotary stock bin. With the positioning device of the tray rotating mechanism, the accuracy requirement of the rotating driving component of the tray rotating mechanism is reduced, and more driving components of the tray rotating mechanism can be selected. Meanwhile, the cost of the optional rotating driving component of the tray rotating mechanism is greatly reduced, and the delivery cycle is shortened.

[0005] The utility model adopts the following technical scheme:

[0006] A positioning device for tray rotating mechanism, including cylinder drive positioning assembly, tray rotating assembly, the positioning of the tray rotating assembly is completed by the taper cooperation of the positioning pin shaft of the cylinder positioning assembly and the positioning pin sleeve on the tray rotating assembly, and the high-precision positioning of the rotary stock bin is ensured.

[0007] Specifically, the cylinder driving positioning assembly comprises a thin-wall cylinder, a floating joint, a positioning pin shaft, a guide sleeve, a guide sleeve, and a fixed seat. The cylinder driving positioning assembly is arranged below the tray rotating assembly.

[0008] Further, the thin-wall cylinder is arranged below the fixed seat, the guide sleeve is arranged above the fixed seat, and the guide sleeve is arranged in the guide sleeve.

[0009] Further, the floating joint is arranged at the end of the thin-wall cylinder piston rod, and the positioning pin shaft is arranged in the guide sleeve.

[0010] Further, the floating joint is arranged at the tail of the positioning pin shaft, and the thin-wall cylinder drives the positioning pin shaft to move up and down in the guide sleeve.

[0011] Specifically, the tray rotating assembly comprises a positioning pin sleeve, a rotating disc, a tray, and a rotary drive. The rotary drive is coaxially arranged below the rotating disc, the tray is arranged above the rotating disc, and the workpiece can be placed on the tray.

[0012] Further, the positioning pin sleeve is arranged below the rotating disc, and the positioning pin sleeve is coaxial with the positioning pin shaft.

[0013] A working method of a positioning device for a tray rotating mechanism, comprising the following steps:

[0014] S1, the tray rotating assembly rotates to the working position;

[0015] S2, the cylinder driving positioning pin shaft is lifted to cooperate with the positioning pin sleeve below the rotating disc, and the positioning pin sleeve and the rotating disc are fixed;

[0016] S3, repeat the steps of S1 and S2, fix the remaining positioning pin sleeve and the rotating disc, and complete the fixing of all positioning pin sleeves and the rotating disc;

[0017] S4, when the tray rotating assembly rotates to any working position, the cylinder driving positioning pin is lifted to cooperate with the fixed positioning pin sleeve, and the accurate positioning of the rotating bin can be realized.

[0018] Compared with the prior art, the utility model has at least the following beneficial effects:

[0019] The positioning device of the tray rotating mechanism of the utility model uses ordinary precision rotary drive and positioning device on the rotating bin, replaces the selected heavy load and high precision rotary drive component on the rotating bin, realizes high precision indexing and positioning of the rotating bin, and meets the demand of high indexing precision of the bin.

[0020] Further, when the cylinder driving positioning pin shaft jacks up the positioning, the positioning of the material bin and the fixing of the rotating disc are realized, and the rotating material bin driving part can be protected from external impact when the workpieces are loaded and unloaded on the tray.

[0021] Further, the positioning pin sleeve and the rotating disc are designed in a split type, and if the positioning pin sleeve is worn, the positioning pin sleeve can be conveniently replaced.

[0022] Further, the thin-wall cylinder and the positioning pin shaft are connected through a floating joint, the bending problem of the cylinder piston rod caused by the different shafts of the thin-wall cylinder piston rod and the positioning pin shaft is avoided, and the service life of the thin-wall cylinder is improved.

[0023] Further, the positioning method of the cylinder driving positioning assembly and the positioning pin sleeve is fault-tolerant, and the driving part of the rotating material bin can select a common precision rotary drive.

[0024] The scheme of the utility model will be further described in detail below through the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the axial side view of the positioning device of the tray rotating mechanism of the utility model;

[0026] Figure 2 It is the sectional view of the positioning device of the tray rotating mechanism of the utility model;

[0027] In the drawing: 1. thin-wall cylinder; 2. floating joint; 3. positioning pin shaft; 4. guide sleeve; 5. guide sleeve; 6. fixed seat; 7. positioning pin sleeve; 8. rotating disc; 9. tray; 10. rotary drive. DETAILED DESCRIPTION

[0028] Please refer to Figure 1 and Figure 2 The utility model discloses a positioning device of tray rotating mechanism, including cylinder driving positioning assembly, tray rotating assembly, utilize the positioning pin shaft of cylinder positioning assembly and the taper cooperation of positioning pin sleeve on tray rotating assembly complete the positioning of tray rotating mechanism, guarantee the high index precision of rotating material bin. The main function of cylinder driving assembly is to drive the positioning pin shaft to complete the positioning action, adopts modular design, and its specific structure is as shown in Figure 2As shown, including thin-walled cylinder 1, floating joint 2, positioning pin shaft 3, guide sleeve 4, guide sleeve 5, fixed seat 6. Guide sleeve 4 is installed in guide sleeve 5 by matching, and the radial of guide sleeve 5 has two top screws to fix guide sleeve 4, guide sleeve 4 is installed flush with the end face of guide sleeve 5, guide sleeve 5 is installed on the upper surface of fixed seat 6 by screw; thin-walled cylinder 1 is installed on the lower surface of fixed seat 6 by screw, floating joint 2 with threaded head is screwed on the piston rod end of thin-walled cylinder 1, the T-shaped groove at the rear end of positioning pin shaft 3 is matched with the T-shaped head of floating joint 2 to form floating connection, and the piston rod of the cylinder is protected. Thin-walled cylinder 1 drives positioning pin shaft 3 to move up and down in guide sleeve 4, realizing the positioning action of the cylinder driving assembly.

[0029] The specific structure of the tray rotating assembly is as shown in Figure 1 And Figure 2 As shown, including positioning pin sleeve 7, rotating disc 8, tray 9, rotary drive 10. Rotating disc 8 is coaxially installed above rotary drive 10 by screw, and tray 9 is placed above rotating disc 8 in the circumferential direction by supporting column and positioning pin. Positioning pin sleeve 7 is installed below rotating disc 8 by screw, and positioning pin sleeve 7 has a one-to-one corresponding positional relationship with tray 9, that is, there is one positioning pin sleeve 7 below each tray 9. The accurate installation position of positioning pin sleeve 7 on rotating disc 8 is determined by positioning pin shaft 3 and tray 9 together, when rotary drive 10 rotates to the first tray 9 to the zero degree direction, positioning pin shaft 3 is lifted up and forms a taper fit with positioning pin sleeve 7, at this time, positioning pin sleeve 7 is fixed on rotating disc 8 by screw, and the fixing of the remaining five positioning pin sleeves 7 and rotating disc 8 is completed in sequence according to this step, and the coordinate value of rotary drive 10 when each tray 9 rotates to the zero degree direction is recorded.

[0030] The working process of the utility model is as follows:

[0031] Rotary drive 10 rotates according to the fixed coordinate value recorded during debugging and stops after rotating to the coordinate position; electromagnetic valve controls thin-walled cylinder 1 to drive positioning pin shaft 3 to lift up and form a taper fit with positioning pin sleeve 7 on rotating disc 8 to complete the positioning of rotating disc 8; the electromagnetic valve acts again to control thin-walled cylinder 1 to drive positioning pin shaft 3 to move downward and separate from positioning pin sleeve 7, and rotary drive 10 stops after rotating to another fixed coordinate value; the action of the second step can be repeated to complete the positioning of rotating disc 8 again. The coordinates recorded by rotary drive 10 can realize the accurate indexing of rotating disc 8.

[0032] The above content only illustrates the technical idea of the utility model, and cannot limit the protection scope of the utility model, and any modification made on the basis of the technical scheme according to the technical idea of the utility model falls within the protection scope of the utility model claim.

Claims

1. A positioning device for a tray rotation mechanism, characterized by, The application relates to a rotating material bin positioning device, which comprises a cylinder driving positioning assembly and a tray rotating assembly, wherein the cylinder driving positioning assembly is arranged below the tray rotating assembly; the positioning of the tray rotating assembly is completed by the taper cooperation between a positioning pin shaft (3) of the cylinder driving positioning assembly and a positioning pin sleeve (7) on the tray rotating assembly, and the high-precision positioning of the rotating material bin is ensured.

2. A positioning device for a tray rotation mechanism according to claim 1, wherein The cylinder driving positioning assembly further comprises a thin-wall cylinder (1), a floating joint (2), a guide sleeve (4), a guide sleeve (5) and a fixed base (6); the thin-wall cylinder (1) is arranged below the fixed base (6), the guide sleeve (5) is arranged above the fixed base (6), and the guide sleeve (4) is arranged in the guide sleeve (5).

3. A positioning device for a tray rotation mechanism according to claim 2, wherein The floating joint (2) is arranged at the end of a piston rod of the thin-wall cylinder (1), and the positioning pin shaft (3) is arranged in the guide sleeve (4); the floating joint (2) is arranged at the tail of the positioning pin shaft (3), and the thin-wall cylinder (1) drives the pin shaft (3) to move up and down in the guide sleeve (4).

4. The positioning device for a tray rotation mechanism according to claim 1, wherein The tray rotating assembly comprises a positioning pin sleeve (7), a rotating disc (8), a tray (9) and a rotary drive (10).

5. A positioning device for a tray rotation mechanism according to claim 4, wherein The rotary drive (10) is coaxially arranged below the rotating disc (8), the tray (9) is arranged above the rotating disc (8), and workpieces can be placed on the tray (9).

6. A positioning device for a tray rotation mechanism according to claim 4, wherein The positioning pin sleeve (7) is arranged below the rotating disc (8), and the positioning pin sleeve (7) is coaxial with the positioning pin shaft (3).

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